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5 Commits
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f8d8e5c10e
| Author | SHA1 | Date |
|---|---|---|
 Rekai Nyangadzayi Musuka
|
f8d8e5c10e | |
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Rekai Nyangadzayi Musuka
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2f3af5afb0 | |
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Rekai Nyangadzayi Musuka
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02d60643fd | |
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Rekai Nyangadzayi Musuka
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74f997d8a0 | |
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Rekai Nyangadzayi Musuka
|
f3ced56ce3 |
10
build.zig
10
build.zig
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@ -4,6 +4,8 @@ pub const Backend = enum {
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no_backend,
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glfw_wgpu,
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win32_dx12,
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glfw_opengl3,
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sdl2_opengl3,
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};
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pub const BuildOptions = struct {
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@ -68,6 +70,14 @@ pub fn link(exe: *std.build.LibExeObjStep, bos: BuildOptionsStep) void {
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_glfw.cpp", cflags);
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_wgpu.cpp", cflags);
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},
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.glfw_opengl3 => {
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_glfw.cpp", cflags);
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_opengl3.cpp", cflags);
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},
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.sdl2_opengl3 => {
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_sdl.cpp", cflags);
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_opengl3.cpp", cflags);
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},
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.win32_dx12 => {
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_win32.cpp", cflags);
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exe.addCSourceFile(thisDir() ++ "/libs/imgui/backends/imgui_impl_dx12.cpp", cflags);
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@ -0,0 +1,897 @@
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// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
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// - Desktop GL: 2.x 3.x 4.x
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// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
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// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
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// Implemented features:
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// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
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// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
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// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
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// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
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// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
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// Read online: https://github.com/ocornut/imgui/tree/master/docs
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2022-11-09: OpenGL: Reverted use of glBufferSubData(), too many corruptions issues + old issues seemingly can't be reproed with Intel drivers nowadays (revert 2021-12-15 and 2022-05-23 changes).
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// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
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// 2022-09-27: OpenGL: Added ability to '#define IMGUI_IMPL_OPENGL_DEBUG'.
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// 2022-05-23: OpenGL: Reworking 2021-12-15 "Using buffer orphaning" so it only happens on Intel GPU, seems to cause problems otherwise. (#4468, #4825, #4832, #5127).
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// 2022-05-13: OpenGL: Fix state corruption on OpenGL ES 2.0 due to not preserving GL_ELEMENT_ARRAY_BUFFER_BINDING and vertex attribute states.
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// 2021-12-15: OpenGL: Using buffer orphaning + glBufferSubData(), seems to fix leaks with multi-viewports with some Intel HD drivers.
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// 2021-08-23: OpenGL: Fixed ES 3.0 shader ("#version 300 es") use normal precision floats to avoid wobbly rendering at HD resolutions.
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// 2021-08-19: OpenGL: Embed and use our own minimal GL loader (imgui_impl_opengl3_loader.h), removing requirement and support for third-party loader.
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// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
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// 2021-06-25: OpenGL: Use OES_vertex_array extension on Emscripten + backup/restore current state.
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// 2021-06-21: OpenGL: Destroy individual vertex/fragment shader objects right after they are linked into the main shader.
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// 2021-05-24: OpenGL: Access GL_CLIP_ORIGIN when "GL_ARB_clip_control" extension is detected, inside of just OpenGL 4.5 version.
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// 2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
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// 2021-04-06: OpenGL: Don't try to read GL_CLIP_ORIGIN unless we're OpenGL 4.5 or greater.
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// 2021-02-18: OpenGL: Change blending equation to preserve alpha in output buffer.
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// 2021-01-03: OpenGL: Backup, setup and restore GL_STENCIL_TEST state.
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// 2020-10-23: OpenGL: Backup, setup and restore GL_PRIMITIVE_RESTART state.
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// 2020-10-15: OpenGL: Use glGetString(GL_VERSION) instead of glGetIntegerv(GL_MAJOR_VERSION, ...) when the later returns zero (e.g. Desktop GL 2.x)
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// 2020-09-17: OpenGL: Fix to avoid compiling/calling glBindSampler() on ES or pre 3.3 context which have the defines set by a loader.
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// 2020-07-10: OpenGL: Added support for glad2 OpenGL loader.
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// 2020-05-08: OpenGL: Made default GLSL version 150 (instead of 130) on OSX.
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// 2020-04-21: OpenGL: Fixed handling of glClipControl(GL_UPPER_LEFT) by inverting projection matrix.
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// 2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset.
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// 2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader.
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// 2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader.
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// 2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
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// 2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
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// 2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
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// 2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
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// 2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
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// 2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
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// 2019-03-15: OpenGL: Added a GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
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// 2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
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// 2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
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// 2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
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// 2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450).
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// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
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// 2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN.
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// 2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
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// 2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
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// 2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
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// 2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link.
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// 2018-06-08: Misc: Extracted imgui_impl_opengl3.cpp/.h away from the old combined GLFW/SDL+OpenGL3 examples.
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// 2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
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// 2018-05-25: OpenGL: Removed unnecessary backup/restore of GL_ELEMENT_ARRAY_BUFFER_BINDING since this is part of the VAO state.
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// 2018-05-14: OpenGL: Making the call to glBindSampler() optional so 3.2 context won't fail if the function is a nullptr pointer.
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// 2018-03-06: OpenGL: Added const char* glsl_version parameter to ImGui_ImplOpenGL3_Init() so user can override the GLSL version e.g. "#version 150".
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// 2018-02-23: OpenGL: Create the VAO in the render function so the setup can more easily be used with multiple shared GL context.
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// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself.
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// 2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150.
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// 2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode.
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// 2017-05-01: OpenGL: Fixed save and restore of current blend func state.
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// 2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE.
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// 2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
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// 2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
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//----------------------------------------
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// OpenGL GLSL GLSL
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// version version string
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//----------------------------------------
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// 2.0 110 "#version 110"
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// 2.1 120 "#version 120"
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// 3.0 130 "#version 130"
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// 3.1 140 "#version 140"
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// 3.2 150 "#version 150"
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// 3.3 330 "#version 330 core"
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// 4.0 400 "#version 400 core"
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// 4.1 410 "#version 410 core"
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// 4.2 420 "#version 410 core"
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// 4.3 430 "#version 430 core"
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// ES 2.0 100 "#version 100" = WebGL 1.0
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// ES 3.0 300 "#version 300 es" = WebGL 2.0
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//----------------------------------------
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#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include "imgui.h"
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#include "imgui_impl_opengl3.h"
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#include <stdio.h>
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#if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
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#include <stddef.h> // intptr_t
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#else
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#include <stdint.h> // intptr_t
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#endif
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#if defined(__APPLE__)
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#include <TargetConditionals.h>
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#endif
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// Clang warnings with -Weverything
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast
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#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
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#endif
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#if defined(__GNUC__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types
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#endif
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// GL includes
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#if defined(IMGUI_IMPL_OPENGL_ES2)
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#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
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#include <OpenGLES/ES2/gl.h> // Use GL ES 2
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#else
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#include <GLES2/gl2.h> // Use GL ES 2
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#endif
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#if defined(__EMSCRIPTEN__)
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#ifndef GL_GLEXT_PROTOTYPES
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#define GL_GLEXT_PROTOTYPES
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#endif
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#include <GLES2/gl2ext.h>
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#endif
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#elif defined(IMGUI_IMPL_OPENGL_ES3)
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#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
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#include <OpenGLES/ES3/gl.h> // Use GL ES 3
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#else
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#include <GLES3/gl3.h> // Use GL ES 3
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#endif
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#elif !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
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// Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
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// Helper libraries are often used for this purpose! Here we are using our own minimal custom loader based on gl3w.
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// In the rest of your app/engine, you can use another loader of your choice (gl3w, glew, glad, glbinding, glext, glLoadGen, etc.).
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// If you happen to be developing a new feature for this backend (imgui_impl_opengl3.cpp):
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// - You may need to regenerate imgui_impl_opengl3_loader.h to add new symbols. See https://github.com/dearimgui/gl3w_stripped
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// - You can temporarily use an unstripped version. See https://github.com/dearimgui/gl3w_stripped/releases
|
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// Changes to this backend using new APIs should be accompanied by a regenerated stripped loader version.
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#define IMGL3W_IMPL
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#include "imgui_impl_opengl3_loader.h"
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#endif
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// Vertex arrays are not supported on ES2/WebGL1 unless Emscripten which uses an extension
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#ifndef IMGUI_IMPL_OPENGL_ES2
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#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
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#elif defined(__EMSCRIPTEN__)
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#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
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#define glBindVertexArray glBindVertexArrayOES
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#define glGenVertexArrays glGenVertexArraysOES
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#define glDeleteVertexArrays glDeleteVertexArraysOES
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#define GL_VERTEX_ARRAY_BINDING GL_VERTEX_ARRAY_BINDING_OES
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#endif
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// Desktop GL 2.0+ has glPolygonMode() which GL ES and WebGL don't have.
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#ifdef GL_POLYGON_MODE
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#define IMGUI_IMPL_HAS_POLYGON_MODE
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#endif
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// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_2)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
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#endif
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// Desktop GL 3.3+ has glBindSampler()
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_3)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
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#endif
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// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
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#endif
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// Desktop GL use extension detection
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#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
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#define IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
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#endif
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// [Debugging]
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//#define IMGUI_IMPL_OPENGL_DEBUG
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#ifdef IMGUI_IMPL_OPENGL_DEBUG
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#include <stdio.h>
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#define GL_CALL(_CALL) do { _CALL; GLenum gl_err = glGetError(); if (gl_err != 0) fprintf(stderr, "GL error 0x%x returned from '%s'.\n", gl_err, #_CALL); } while (0) // Call with error check
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#else
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#define GL_CALL(_CALL) _CALL // Call without error check
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#endif
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// OpenGL Data
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||||
struct ImGui_ImplOpenGL3_Data
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{
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GLuint GlVersion; // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2)
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char GlslVersionString[32]; // Specified by user or detected based on compile time GL settings.
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||||
GLuint FontTexture;
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||||
GLuint ShaderHandle;
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||||
GLint AttribLocationTex; // Uniforms location
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||||
GLint AttribLocationProjMtx;
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GLuint AttribLocationVtxPos; // Vertex attributes location
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||||
GLuint AttribLocationVtxUV;
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||||
GLuint AttribLocationVtxColor;
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unsigned int VboHandle, ElementsHandle;
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||||
GLsizeiptr VertexBufferSize;
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||||
GLsizeiptr IndexBufferSize;
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||||
bool HasClipOrigin;
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bool UseBufferSubData;
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||||
ImGui_ImplOpenGL3_Data() { memset((void*)this, 0, sizeof(*this)); }
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||||
};
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||||
|
||||
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
|
||||
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
|
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static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData()
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||||
{
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return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
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||||
}
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||||
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// OpenGL vertex attribute state (for ES 1.0 and ES 2.0 only)
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#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
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struct ImGui_ImplOpenGL3_VtxAttribState
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||||
{
|
||||
GLint Enabled, Size, Type, Normalized, Stride;
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||||
GLvoid* Ptr;
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||||
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||||
void GetState(GLint index)
|
||||
{
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||||
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &Enabled);
|
||||
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_SIZE, &Size);
|
||||
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_TYPE, &Type);
|
||||
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &Normalized);
|
||||
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &Stride);
|
||||
glGetVertexAttribPointerv(index, GL_VERTEX_ATTRIB_ARRAY_POINTER, &Ptr);
|
||||
}
|
||||
void SetState(GLint index)
|
||||
{
|
||||
glVertexAttribPointer(index, Size, Type, (GLboolean)Normalized, Stride, Ptr);
|
||||
if (Enabled) glEnableVertexAttribArray(index); else glDisableVertexAttribArray(index);
|
||||
}
|
||||
};
|
||||
#endif
|
||||
|
||||
// Functions
|
||||
bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
|
||||
|
||||
// Initialize our loader
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
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||||
if (imgl3wInit() != 0)
|
||||
{
|
||||
fprintf(stderr, "Failed to initialize OpenGL loader!\n");
|
||||
return false;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Setup backend capabilities flags
|
||||
ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();
|
||||
io.BackendRendererUserData = (void*)bd;
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||||
io.BackendRendererName = "imgui_impl_opengl3";
|
||||
|
||||
// Query for GL version (e.g. 320 for GL 3.2)
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2)
|
||||
GLint major = 0;
|
||||
GLint minor = 0;
|
||||
glGetIntegerv(GL_MAJOR_VERSION, &major);
|
||||
glGetIntegerv(GL_MINOR_VERSION, &minor);
|
||||
if (major == 0 && minor == 0)
|
||||
{
|
||||
// Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
|
||||
const char* gl_version = (const char*)glGetString(GL_VERSION);
|
||||
sscanf(gl_version, "%d.%d", &major, &minor);
|
||||
}
|
||||
bd->GlVersion = (GLuint)(major * 100 + minor * 10);
|
||||
|
||||
bd->UseBufferSubData = false;
|
||||
/*
|
||||
// Query vendor to enable glBufferSubData kludge
|
||||
#ifdef _WIN32
|
||||
if (const char* vendor = (const char*)glGetString(GL_VENDOR))
|
||||
if (strncmp(vendor, "Intel", 5) == 0)
|
||||
bd->UseBufferSubData = true;
|
||||
#endif
|
||||
*/
|
||||
#else
|
||||
bd->GlVersion = 200; // GLES 2
|
||||
#endif
|
||||
|
||||
#ifdef IMGUI_IMPL_OPENGL_DEBUG
|
||||
printf("GL_MAJOR_VERSION = %d\nGL_MINOR_VERSION = %d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", major, minor, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
|
||||
#endif
|
||||
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
if (bd->GlVersion >= 320)
|
||||
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
|
||||
#endif
|
||||
|
||||
// Store GLSL version string so we can refer to it later in case we recreate shaders.
|
||||
// Note: GLSL version is NOT the same as GL version. Leave this to nullptr if unsure.
|
||||
if (glsl_version == nullptr)
|
||||
{
|
||||
#if defined(IMGUI_IMPL_OPENGL_ES2)
|
||||
glsl_version = "#version 100";
|
||||
#elif defined(IMGUI_IMPL_OPENGL_ES3)
|
||||
glsl_version = "#version 300 es";
|
||||
#elif defined(__APPLE__)
|
||||
glsl_version = "#version 150";
|
||||
#else
|
||||
glsl_version = "#version 130";
|
||||
#endif
|
||||
}
|
||||
IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(bd->GlslVersionString));
|
||||
strcpy(bd->GlslVersionString, glsl_version);
|
||||
strcat(bd->GlslVersionString, "\n");
|
||||
|
||||
// Make an arbitrary GL call (we don't actually need the result)
|
||||
// IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know!
|
||||
GLint current_texture;
|
||||
glGetIntegerv(GL_TEXTURE_BINDING_2D, ¤t_texture);
|
||||
|
||||
// Detect extensions we support
|
||||
bd->HasClipOrigin = (bd->GlVersion >= 450);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
|
||||
GLint num_extensions = 0;
|
||||
glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
|
||||
for (GLint i = 0; i < num_extensions; i++)
|
||||
{
|
||||
const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
|
||||
if (extension != nullptr && strcmp(extension, "GL_ARB_clip_control") == 0)
|
||||
bd->HasClipOrigin = true;
|
||||
}
|
||||
#endif
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_Shutdown()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
|
||||
ImGui_ImplOpenGL3_DestroyDeviceObjects();
|
||||
io.BackendRendererName = nullptr;
|
||||
io.BackendRendererUserData = nullptr;
|
||||
IM_DELETE(bd);
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_NewFrame()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplOpenGL3_Init()?");
|
||||
|
||||
if (!bd->ShaderHandle)
|
||||
ImGui_ImplOpenGL3_CreateDeviceObjects();
|
||||
}
|
||||
|
||||
static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
|
||||
glEnable(GL_BLEND);
|
||||
glBlendEquation(GL_FUNC_ADD);
|
||||
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_CULL_FACE);
|
||||
glDisable(GL_DEPTH_TEST);
|
||||
glDisable(GL_STENCIL_TEST);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
if (bd->GlVersion >= 310)
|
||||
glDisable(GL_PRIMITIVE_RESTART);
|
||||
#endif
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
|
||||
#endif
|
||||
|
||||
// Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
|
||||
#if defined(GL_CLIP_ORIGIN)
|
||||
bool clip_origin_lower_left = true;
|
||||
if (bd->HasClipOrigin)
|
||||
{
|
||||
GLenum current_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)¤t_clip_origin);
|
||||
if (current_clip_origin == GL_UPPER_LEFT)
|
||||
clip_origin_lower_left = false;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Setup viewport, orthographic projection matrix
|
||||
// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
|
||||
GL_CALL(glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height));
|
||||
float L = draw_data->DisplayPos.x;
|
||||
float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
|
||||
float T = draw_data->DisplayPos.y;
|
||||
float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
|
||||
#if defined(GL_CLIP_ORIGIN)
|
||||
if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left
|
||||
#endif
|
||||
const float ortho_projection[4][4] =
|
||||
{
|
||||
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
|
||||
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
|
||||
{ 0.0f, 0.0f, -1.0f, 0.0f },
|
||||
{ (R+L)/(L-R), (T+B)/(B-T), 0.0f, 1.0f },
|
||||
};
|
||||
glUseProgram(bd->ShaderHandle);
|
||||
glUniform1i(bd->AttribLocationTex, 0);
|
||||
glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
|
||||
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
if (bd->GlVersion >= 330)
|
||||
glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
|
||||
#endif
|
||||
|
||||
(void)vertex_array_object;
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(vertex_array_object);
|
||||
#endif
|
||||
|
||||
// Bind vertex/index buffers and setup attributes for ImDrawVert
|
||||
GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, bd->VboHandle));
|
||||
GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bd->ElementsHandle));
|
||||
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxPos));
|
||||
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxUV));
|
||||
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxColor));
|
||||
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxPos, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos)));
|
||||
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv)));
|
||||
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col)));
|
||||
}
|
||||
|
||||
// OpenGL3 Render function.
|
||||
// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
|
||||
// This is in order to be able to run within an OpenGL engine that doesn't do so.
|
||||
void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
|
||||
{
|
||||
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
|
||||
int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
|
||||
int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
|
||||
if (fb_width <= 0 || fb_height <= 0)
|
||||
return;
|
||||
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Backup GL state
|
||||
GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
|
||||
glActiveTexture(GL_TEXTURE0);
|
||||
GLuint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&last_program);
|
||||
GLuint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint*)&last_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
GLuint last_sampler; if (bd->GlVersion >= 330) { glGetIntegerv(GL_SAMPLER_BINDING, (GLint*)&last_sampler); } else { last_sampler = 0; }
|
||||
#endif
|
||||
GLuint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, (GLint*)&last_array_buffer);
|
||||
#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
// This is part of VAO on OpenGL 3.0+ and OpenGL ES 3.0+.
|
||||
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
|
||||
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_pos; last_vtx_attrib_state_pos.GetState(bd->AttribLocationVtxPos);
|
||||
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_uv; last_vtx_attrib_state_uv.GetState(bd->AttribLocationVtxUV);
|
||||
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_color; last_vtx_attrib_state_color.GetState(bd->AttribLocationVtxColor);
|
||||
#endif
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object);
|
||||
#endif
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
|
||||
#endif
|
||||
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
|
||||
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
|
||||
GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
|
||||
GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
|
||||
GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
|
||||
GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
|
||||
GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
|
||||
GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
|
||||
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
|
||||
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
|
||||
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
|
||||
GLboolean last_enable_stencil_test = glIsEnabled(GL_STENCIL_TEST);
|
||||
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
GLboolean last_enable_primitive_restart = (bd->GlVersion >= 310) ? glIsEnabled(GL_PRIMITIVE_RESTART) : GL_FALSE;
|
||||
#endif
|
||||
|
||||
// Setup desired GL state
|
||||
// Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
|
||||
// The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound.
|
||||
GLuint vertex_array_object = 0;
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GL_CALL(glGenVertexArrays(1, &vertex_array_object));
|
||||
#endif
|
||||
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
|
||||
|
||||
// Will project scissor/clipping rectangles into framebuffer space
|
||||
ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
|
||||
ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
|
||||
|
||||
// Render command lists
|
||||
for (int n = 0; n < draw_data->CmdListsCount; n++)
|
||||
{
|
||||
const ImDrawList* cmd_list = draw_data->CmdLists[n];
|
||||
|
||||
// Upload vertex/index buffers
|
||||
// - OpenGL drivers are in a very sorry state nowadays....
|
||||
// During 2021 we attempted to switch from glBufferData() to orphaning+glBufferSubData() following reports
|
||||
// of leaks on Intel GPU when using multi-viewports on Windows.
|
||||
// - After this we kept hearing of various display corruptions issues. We started disabling on non-Intel GPU, but issues still got reported on Intel.
|
||||
// - We are now back to using exclusively glBufferData(). So bd->UseBufferSubData IS ALWAYS FALSE in this code.
|
||||
// We are keeping the old code path for a while in case people finding new issues may want to test the bd->UseBufferSubData path.
|
||||
// - See https://github.com/ocornut/imgui/issues/4468 and please report any corruption issues.
|
||||
const GLsizeiptr vtx_buffer_size = (GLsizeiptr)cmd_list->VtxBuffer.Size * (int)sizeof(ImDrawVert);
|
||||
const GLsizeiptr idx_buffer_size = (GLsizeiptr)cmd_list->IdxBuffer.Size * (int)sizeof(ImDrawIdx);
|
||||
if (bd->UseBufferSubData)
|
||||
{
|
||||
if (bd->VertexBufferSize < vtx_buffer_size)
|
||||
{
|
||||
bd->VertexBufferSize = vtx_buffer_size;
|
||||
GL_CALL(glBufferData(GL_ARRAY_BUFFER, bd->VertexBufferSize, nullptr, GL_STREAM_DRAW));
|
||||
}
|
||||
if (bd->IndexBufferSize < idx_buffer_size)
|
||||
{
|
||||
bd->IndexBufferSize = idx_buffer_size;
|
||||
GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, bd->IndexBufferSize, nullptr, GL_STREAM_DRAW));
|
||||
}
|
||||
GL_CALL(glBufferSubData(GL_ARRAY_BUFFER, 0, vtx_buffer_size, (const GLvoid*)cmd_list->VtxBuffer.Data));
|
||||
GL_CALL(glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, idx_buffer_size, (const GLvoid*)cmd_list->IdxBuffer.Data));
|
||||
}
|
||||
else
|
||||
{
|
||||
GL_CALL(glBufferData(GL_ARRAY_BUFFER, vtx_buffer_size, (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW));
|
||||
GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, idx_buffer_size, (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW));
|
||||
}
|
||||
|
||||
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
|
||||
{
|
||||
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
|
||||
if (pcmd->UserCallback != nullptr)
|
||||
{
|
||||
// User callback, registered via ImDrawList::AddCallback()
|
||||
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
|
||||
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
|
||||
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
|
||||
else
|
||||
pcmd->UserCallback(cmd_list, pcmd);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Project scissor/clipping rectangles into framebuffer space
|
||||
ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
|
||||
ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
|
||||
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
|
||||
continue;
|
||||
|
||||
// Apply scissor/clipping rectangle (Y is inverted in OpenGL)
|
||||
GL_CALL(glScissor((int)clip_min.x, (int)((float)fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y)));
|
||||
|
||||
// Bind texture, Draw
|
||||
GL_CALL(glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID()));
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
|
||||
if (bd->GlVersion >= 320)
|
||||
GL_CALL(glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset));
|
||||
else
|
||||
#endif
|
||||
GL_CALL(glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx))));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Destroy the temporary VAO
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GL_CALL(glDeleteVertexArrays(1, &vertex_array_object));
|
||||
#endif
|
||||
|
||||
// Restore modified GL state
|
||||
glUseProgram(last_program);
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
|
||||
if (bd->GlVersion >= 330)
|
||||
glBindSampler(0, last_sampler);
|
||||
#endif
|
||||
glActiveTexture(last_active_texture);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(last_vertex_array_object);
|
||||
#endif
|
||||
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
|
||||
#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
|
||||
last_vtx_attrib_state_pos.SetState(bd->AttribLocationVtxPos);
|
||||
last_vtx_attrib_state_uv.SetState(bd->AttribLocationVtxUV);
|
||||
last_vtx_attrib_state_color.SetState(bd->AttribLocationVtxColor);
|
||||
#endif
|
||||
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
|
||||
glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
|
||||
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
|
||||
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
|
||||
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
|
||||
if (last_enable_stencil_test) glEnable(GL_STENCIL_TEST); else glDisable(GL_STENCIL_TEST);
|
||||
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
|
||||
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
|
||||
if (bd->GlVersion >= 310) { if (last_enable_primitive_restart) glEnable(GL_PRIMITIVE_RESTART); else glDisable(GL_PRIMITIVE_RESTART); }
|
||||
#endif
|
||||
|
||||
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
|
||||
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
|
||||
#endif
|
||||
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
|
||||
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
|
||||
(void)bd; // Not all compilation paths use this
|
||||
}
|
||||
|
||||
bool ImGui_ImplOpenGL3_CreateFontsTexture()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Build texture atlas
|
||||
unsigned char* pixels;
|
||||
int width, height;
|
||||
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
|
||||
|
||||
// Upload texture to graphics system
|
||||
// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
|
||||
GLint last_texture;
|
||||
GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
|
||||
GL_CALL(glGenTextures(1, &bd->FontTexture));
|
||||
GL_CALL(glBindTexture(GL_TEXTURE_2D, bd->FontTexture));
|
||||
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
|
||||
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
|
||||
#ifdef GL_UNPACK_ROW_LENGTH // Not on WebGL/ES
|
||||
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
|
||||
#endif
|
||||
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels));
|
||||
|
||||
// Store our identifier
|
||||
io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
|
||||
|
||||
// Restore state
|
||||
GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture));
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_DestroyFontsTexture()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
if (bd->FontTexture)
|
||||
{
|
||||
glDeleteTextures(1, &bd->FontTexture);
|
||||
io.Fonts->SetTexID(0);
|
||||
bd->FontTexture = 0;
|
||||
}
|
||||
}
|
||||
|
||||
// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
|
||||
static bool CheckShader(GLuint handle, const char* desc)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
GLint status = 0, log_length = 0;
|
||||
glGetShaderiv(handle, GL_COMPILE_STATUS, &status);
|
||||
glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length);
|
||||
if ((GLboolean)status == GL_FALSE)
|
||||
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s! With GLSL: %s\n", desc, bd->GlslVersionString);
|
||||
if (log_length > 1)
|
||||
{
|
||||
ImVector<char> buf;
|
||||
buf.resize((int)(log_length + 1));
|
||||
glGetShaderInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin());
|
||||
fprintf(stderr, "%s\n", buf.begin());
|
||||
}
|
||||
return (GLboolean)status == GL_TRUE;
|
||||
}
|
||||
|
||||
// If you get an error please report on GitHub. You may try different GL context version or GLSL version.
|
||||
static bool CheckProgram(GLuint handle, const char* desc)
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
GLint status = 0, log_length = 0;
|
||||
glGetProgramiv(handle, GL_LINK_STATUS, &status);
|
||||
glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length);
|
||||
if ((GLboolean)status == GL_FALSE)
|
||||
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! With GLSL %s\n", desc, bd->GlslVersionString);
|
||||
if (log_length > 1)
|
||||
{
|
||||
ImVector<char> buf;
|
||||
buf.resize((int)(log_length + 1));
|
||||
glGetProgramInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin());
|
||||
fprintf(stderr, "%s\n", buf.begin());
|
||||
}
|
||||
return (GLboolean)status == GL_TRUE;
|
||||
}
|
||||
|
||||
bool ImGui_ImplOpenGL3_CreateDeviceObjects()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
|
||||
// Backup GL state
|
||||
GLint last_texture, last_array_buffer;
|
||||
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
|
||||
glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
GLint last_vertex_array;
|
||||
glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
|
||||
#endif
|
||||
|
||||
// Parse GLSL version string
|
||||
int glsl_version = 130;
|
||||
sscanf(bd->GlslVersionString, "#version %d", &glsl_version);
|
||||
|
||||
const GLchar* vertex_shader_glsl_120 =
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"attribute vec2 Position;\n"
|
||||
"attribute vec2 UV;\n"
|
||||
"attribute vec4 Color;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_130 =
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"in vec2 Position;\n"
|
||||
"in vec2 UV;\n"
|
||||
"in vec4 Color;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_300_es =
|
||||
"precision highp float;\n"
|
||||
"layout (location = 0) in vec2 Position;\n"
|
||||
"layout (location = 1) in vec2 UV;\n"
|
||||
"layout (location = 2) in vec4 Color;\n"
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* vertex_shader_glsl_410_core =
|
||||
"layout (location = 0) in vec2 Position;\n"
|
||||
"layout (location = 1) in vec2 UV;\n"
|
||||
"layout (location = 2) in vec4 Color;\n"
|
||||
"uniform mat4 ProjMtx;\n"
|
||||
"out vec2 Frag_UV;\n"
|
||||
"out vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Frag_UV = UV;\n"
|
||||
" Frag_Color = Color;\n"
|
||||
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_120 =
|
||||
"#ifdef GL_ES\n"
|
||||
" precision mediump float;\n"
|
||||
"#endif\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"varying vec2 Frag_UV;\n"
|
||||
"varying vec4 Frag_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_130 =
|
||||
"uniform sampler2D Texture;\n"
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_300_es =
|
||||
"precision mediump float;\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"layout (location = 0) out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
const GLchar* fragment_shader_glsl_410_core =
|
||||
"in vec2 Frag_UV;\n"
|
||||
"in vec4 Frag_Color;\n"
|
||||
"uniform sampler2D Texture;\n"
|
||||
"layout (location = 0) out vec4 Out_Color;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
|
||||
"}\n";
|
||||
|
||||
// Select shaders matching our GLSL versions
|
||||
const GLchar* vertex_shader = nullptr;
|
||||
const GLchar* fragment_shader = nullptr;
|
||||
if (glsl_version < 130)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_120;
|
||||
fragment_shader = fragment_shader_glsl_120;
|
||||
}
|
||||
else if (glsl_version >= 410)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_410_core;
|
||||
fragment_shader = fragment_shader_glsl_410_core;
|
||||
}
|
||||
else if (glsl_version == 300)
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_300_es;
|
||||
fragment_shader = fragment_shader_glsl_300_es;
|
||||
}
|
||||
else
|
||||
{
|
||||
vertex_shader = vertex_shader_glsl_130;
|
||||
fragment_shader = fragment_shader_glsl_130;
|
||||
}
|
||||
|
||||
// Create shaders
|
||||
const GLchar* vertex_shader_with_version[2] = { bd->GlslVersionString, vertex_shader };
|
||||
GLuint vert_handle = glCreateShader(GL_VERTEX_SHADER);
|
||||
glShaderSource(vert_handle, 2, vertex_shader_with_version, nullptr);
|
||||
glCompileShader(vert_handle);
|
||||
CheckShader(vert_handle, "vertex shader");
|
||||
|
||||
const GLchar* fragment_shader_with_version[2] = { bd->GlslVersionString, fragment_shader };
|
||||
GLuint frag_handle = glCreateShader(GL_FRAGMENT_SHADER);
|
||||
glShaderSource(frag_handle, 2, fragment_shader_with_version, nullptr);
|
||||
glCompileShader(frag_handle);
|
||||
CheckShader(frag_handle, "fragment shader");
|
||||
|
||||
// Link
|
||||
bd->ShaderHandle = glCreateProgram();
|
||||
glAttachShader(bd->ShaderHandle, vert_handle);
|
||||
glAttachShader(bd->ShaderHandle, frag_handle);
|
||||
glLinkProgram(bd->ShaderHandle);
|
||||
CheckProgram(bd->ShaderHandle, "shader program");
|
||||
|
||||
glDetachShader(bd->ShaderHandle, vert_handle);
|
||||
glDetachShader(bd->ShaderHandle, frag_handle);
|
||||
glDeleteShader(vert_handle);
|
||||
glDeleteShader(frag_handle);
|
||||
|
||||
bd->AttribLocationTex = glGetUniformLocation(bd->ShaderHandle, "Texture");
|
||||
bd->AttribLocationProjMtx = glGetUniformLocation(bd->ShaderHandle, "ProjMtx");
|
||||
bd->AttribLocationVtxPos = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Position");
|
||||
bd->AttribLocationVtxUV = (GLuint)glGetAttribLocation(bd->ShaderHandle, "UV");
|
||||
bd->AttribLocationVtxColor = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Color");
|
||||
|
||||
// Create buffers
|
||||
glGenBuffers(1, &bd->VboHandle);
|
||||
glGenBuffers(1, &bd->ElementsHandle);
|
||||
|
||||
ImGui_ImplOpenGL3_CreateFontsTexture();
|
||||
|
||||
// Restore modified GL state
|
||||
glBindTexture(GL_TEXTURE_2D, last_texture);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
|
||||
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
|
||||
glBindVertexArray(last_vertex_array);
|
||||
#endif
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplOpenGL3_DestroyDeviceObjects()
|
||||
{
|
||||
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
|
||||
if (bd->VboHandle) { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; }
|
||||
if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; }
|
||||
if (bd->ShaderHandle) { glDeleteProgram(bd->ShaderHandle); bd->ShaderHandle = 0; }
|
||||
ImGui_ImplOpenGL3_DestroyFontsTexture();
|
||||
}
|
||||
|
||||
#if defined(__GNUC__)
|
||||
#pragma GCC diagnostic pop
|
||||
#endif
|
||||
#if defined(__clang__)
|
||||
#pragma clang diagnostic pop
|
||||
#endif
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
|
||||
// - Desktop GL: 2.x 3.x 4.x
|
||||
// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
|
||||
// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
|
||||
|
||||
// Implemented features:
|
||||
// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
|
||||
// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
|
||||
|
||||
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
// About GLSL version:
|
||||
// The 'glsl_version' initialization parameter should be nullptr (default) or a "#version XXX" string.
|
||||
// On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
|
||||
// Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
|
||||
|
||||
#pragma once
|
||||
#include "imgui.h" // IMGUI_IMPL_API
|
||||
|
||||
extern "C" {
|
||||
// Backend API
|
||||
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
|
||||
IMGUI_IMPL_API void ImGui_ImplOpenGL3_Shutdown();
|
||||
IMGUI_IMPL_API void ImGui_ImplOpenGL3_NewFrame();
|
||||
IMGUI_IMPL_API void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
|
||||
|
||||
// (Optional) Called by Init/NewFrame/Shutdown
|
||||
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_CreateFontsTexture();
|
||||
IMGUI_IMPL_API void ImGui_ImplOpenGL3_DestroyFontsTexture();
|
||||
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_CreateDeviceObjects();
|
||||
IMGUI_IMPL_API void ImGui_ImplOpenGL3_DestroyDeviceObjects();
|
||||
}
|
||||
|
||||
// Specific OpenGL ES versions
|
||||
//#define IMGUI_IMPL_OPENGL_ES2 // Auto-detected on Emscripten
|
||||
//#define IMGUI_IMPL_OPENGL_ES3 // Auto-detected on iOS/Android
|
||||
|
||||
// You can explicitly select GLES2 or GLES3 API by using one of the '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
|
||||
#if !defined(IMGUI_IMPL_OPENGL_ES2) \
|
||||
&& !defined(IMGUI_IMPL_OPENGL_ES3)
|
||||
|
||||
// Try to detect GLES on matching platforms
|
||||
#if defined(__APPLE__)
|
||||
#include <TargetConditionals.h>
|
||||
#endif
|
||||
#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
|
||||
#define IMGUI_IMPL_OPENGL_ES3 // iOS, Android -> GL ES 3, "#version 300 es"
|
||||
#elif defined(__EMSCRIPTEN__) || defined(__amigaos4__)
|
||||
#define IMGUI_IMPL_OPENGL_ES2 // Emscripten -> GL ES 2, "#version 100"
|
||||
#else
|
||||
// Otherwise imgui_impl_opengl3_loader.h will be used.
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,794 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// About imgui_impl_opengl3_loader.h:
|
||||
//
|
||||
// We embed our own OpenGL loader to not require user to provide their own or to have to use ours,
|
||||
// which proved to be endless problems for users.
|
||||
// Our loader is custom-generated, based on gl3w but automatically filtered to only include
|
||||
// enums/functions that we use in our imgui_impl_opengl3.cpp source file in order to be small.
|
||||
//
|
||||
// YOU SHOULD NOT NEED TO INCLUDE/USE THIS DIRECTLY. THIS IS USED BY imgui_impl_opengl3.cpp ONLY.
|
||||
// THE REST OF YOUR APP SHOULD USE A DIFFERENT GL LOADER: ANY GL LOADER OF YOUR CHOICE.
|
||||
//
|
||||
// IF YOU GET BUILD ERRORS IN THIS FILE (commonly macro redefinitions or function redefinitions):
|
||||
// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCUDING 'imgui_impl_opengl3_loader.h'
|
||||
// IN THE SAME COMPILATION UNIT AS ONE OF YOUR FILE WHICH IS USING A THIRD-PARTY OPENGL LOADER.
|
||||
// (e.g. COULD HAPPEN IF YOU ARE DOING A UNITY/JUMBO BUILD, OR INCLUDING .CPP FILES FROM OTHERS)
|
||||
// YOU SHOULD NOT BUILD BOTH IN THE SAME COMPILATION UNIT.
|
||||
// BUT IF YOU REALLY WANT TO, you can '#define IMGUI_IMPL_OPENGL_LOADER_CUSTOM' and imgui_impl_opengl3.cpp
|
||||
// WILL NOT BE USING OUR LOADER, AND INSTEAD EXPECT ANOTHER/YOUR LOADER TO BE AVAILABLE IN THE COMPILATION UNIT.
|
||||
//
|
||||
// Regenerate with:
|
||||
// python gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt
|
||||
//
|
||||
// More info:
|
||||
// https://github.com/dearimgui/gl3w_stripped
|
||||
// https://github.com/ocornut/imgui/issues/4445
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
/*
|
||||
* This file was generated with gl3w_gen.py, part of imgl3w
|
||||
* (hosted at https://github.com/dearimgui/gl3w_stripped)
|
||||
*
|
||||
* This is free and unencumbered software released into the public domain.
|
||||
*
|
||||
* Anyone is free to copy, modify, publish, use, compile, sell, or
|
||||
* distribute this software, either in source code form or as a compiled
|
||||
* binary, for any purpose, commercial or non-commercial, and by any
|
||||
* means.
|
||||
*
|
||||
* In jurisdictions that recognize copyright laws, the author or authors
|
||||
* of this software dedicate any and all copyright interest in the
|
||||
* software to the public domain. We make this dedication for the benefit
|
||||
* of the public at large and to the detriment of our heirs and
|
||||
* successors. We intend this dedication to be an overt act of
|
||||
* relinquishment in perpetuity of all present and future rights to this
|
||||
* software under copyright law.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
* OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef __gl3w_h_
|
||||
#define __gl3w_h_
|
||||
|
||||
// Adapted from KHR/khrplatform.h to avoid including entire file.
|
||||
#ifndef __khrplatform_h_
|
||||
typedef float khronos_float_t;
|
||||
typedef signed char khronos_int8_t;
|
||||
typedef unsigned char khronos_uint8_t;
|
||||
typedef signed short int khronos_int16_t;
|
||||
typedef unsigned short int khronos_uint16_t;
|
||||
#ifdef _WIN64
|
||||
typedef signed long long int khronos_intptr_t;
|
||||
typedef signed long long int khronos_ssize_t;
|
||||
#else
|
||||
typedef signed long int khronos_intptr_t;
|
||||
typedef signed long int khronos_ssize_t;
|
||||
#endif
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
typedef signed __int64 khronos_int64_t;
|
||||
typedef unsigned __int64 khronos_uint64_t;
|
||||
#elif (defined(__clang__) || defined(__GNUC__)) && (__cplusplus < 201100)
|
||||
#include <stdint.h>
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#else
|
||||
typedef signed long long khronos_int64_t;
|
||||
typedef unsigned long long khronos_uint64_t;
|
||||
#endif
|
||||
#endif // __khrplatform_h_
|
||||
|
||||
#ifndef __gl_glcorearb_h_
|
||||
#define __gl_glcorearb_h_ 1
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
/*
|
||||
** Copyright 2013-2020 The Khronos Group Inc.
|
||||
** SPDX-License-Identifier: MIT
|
||||
**
|
||||
** This header is generated from the Khronos OpenGL / OpenGL ES XML
|
||||
** API Registry. The current version of the Registry, generator scripts
|
||||
** used to make the header, and the header can be found at
|
||||
** https://github.com/KhronosGroup/OpenGL-Registry
|
||||
*/
|
||||
#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
|
||||
#ifndef WIN32_LEAN_AND_MEAN
|
||||
#define WIN32_LEAN_AND_MEAN 1
|
||||
#endif
|
||||
#include <windows.h>
|
||||
#endif
|
||||
#ifndef APIENTRY
|
||||
#define APIENTRY
|
||||
#endif
|
||||
#ifndef APIENTRYP
|
||||
#define APIENTRYP APIENTRY *
|
||||
#endif
|
||||
#ifndef GLAPI
|
||||
#define GLAPI extern
|
||||
#endif
|
||||
/* glcorearb.h is for use with OpenGL core profile implementations.
|
||||
** It should should be placed in the same directory as gl.h and
|
||||
** included as <GL/glcorearb.h>.
|
||||
**
|
||||
** glcorearb.h includes only APIs in the latest OpenGL core profile
|
||||
** implementation together with APIs in newer ARB extensions which
|
||||
** can be supported by the core profile. It does not, and never will
|
||||
** include functionality removed from the core profile, such as
|
||||
** fixed-function vertex and fragment processing.
|
||||
**
|
||||
** Do not #include both <GL/glcorearb.h> and either of <GL/gl.h> or
|
||||
** <GL/glext.h> in the same source file.
|
||||
*/
|
||||
/* Generated C header for:
|
||||
* API: gl
|
||||
* Profile: core
|
||||
* Versions considered: .*
|
||||
* Versions emitted: .*
|
||||
* Default extensions included: glcore
|
||||
* Additional extensions included: _nomatch_^
|
||||
* Extensions removed: _nomatch_^
|
||||
*/
|
||||
#ifndef GL_VERSION_1_0
|
||||
typedef void GLvoid;
|
||||
typedef unsigned int GLenum;
|
||||
|
||||
typedef khronos_float_t GLfloat;
|
||||
typedef int GLint;
|
||||
typedef int GLsizei;
|
||||
typedef unsigned int GLbitfield;
|
||||
typedef double GLdouble;
|
||||
typedef unsigned int GLuint;
|
||||
typedef unsigned char GLboolean;
|
||||
typedef khronos_uint8_t GLubyte;
|
||||
#define GL_COLOR_BUFFER_BIT 0x00004000
|
||||
#define GL_FALSE 0
|
||||
#define GL_TRUE 1
|
||||
#define GL_TRIANGLES 0x0004
|
||||
#define GL_ONE 1
|
||||
#define GL_SRC_ALPHA 0x0302
|
||||
#define GL_ONE_MINUS_SRC_ALPHA 0x0303
|
||||
#define GL_FRONT_AND_BACK 0x0408
|
||||
#define GL_POLYGON_MODE 0x0B40
|
||||
#define GL_CULL_FACE 0x0B44
|
||||
#define GL_DEPTH_TEST 0x0B71
|
||||
#define GL_STENCIL_TEST 0x0B90
|
||||
#define GL_VIEWPORT 0x0BA2
|
||||
#define GL_BLEND 0x0BE2
|
||||
#define GL_SCISSOR_BOX 0x0C10
|
||||
#define GL_SCISSOR_TEST 0x0C11
|
||||
#define GL_UNPACK_ROW_LENGTH 0x0CF2
|
||||
#define GL_PACK_ALIGNMENT 0x0D05
|
||||
#define GL_TEXTURE_2D 0x0DE1
|
||||
#define GL_UNSIGNED_BYTE 0x1401
|
||||
#define GL_UNSIGNED_SHORT 0x1403
|
||||
#define GL_UNSIGNED_INT 0x1405
|
||||
#define GL_FLOAT 0x1406
|
||||
#define GL_RGBA 0x1908
|
||||
#define GL_FILL 0x1B02
|
||||
#define GL_VENDOR 0x1F00
|
||||
#define GL_RENDERER 0x1F01
|
||||
#define GL_VERSION 0x1F02
|
||||
#define GL_EXTENSIONS 0x1F03
|
||||
#define GL_LINEAR 0x2601
|
||||
#define GL_TEXTURE_MAG_FILTER 0x2800
|
||||
#define GL_TEXTURE_MIN_FILTER 0x2801
|
||||
typedef void (APIENTRYP PFNGLPOLYGONMODEPROC) (GLenum face, GLenum mode);
|
||||
typedef void (APIENTRYP PFNGLSCISSORPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
|
||||
typedef void (APIENTRYP PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param);
|
||||
typedef void (APIENTRYP PFNGLTEXIMAGE2DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
|
||||
typedef void (APIENTRYP PFNGLCLEARPROC) (GLbitfield mask);
|
||||
typedef void (APIENTRYP PFNGLCLEARCOLORPROC) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
|
||||
typedef void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap);
|
||||
typedef void (APIENTRYP PFNGLENABLEPROC) (GLenum cap);
|
||||
typedef void (APIENTRYP PFNGLFLUSHPROC) (void);
|
||||
typedef void (APIENTRYP PFNGLPIXELSTOREIPROC) (GLenum pname, GLint param);
|
||||
typedef void (APIENTRYP PFNGLREADPIXELSPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
|
||||
typedef GLenum (APIENTRYP PFNGLGETERRORPROC) (void);
|
||||
typedef void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *data);
|
||||
typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGPROC) (GLenum name);
|
||||
typedef GLboolean (APIENTRYP PFNGLISENABLEDPROC) (GLenum cap);
|
||||
typedef void (APIENTRYP PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glPolygonMode (GLenum face, GLenum mode);
|
||||
GLAPI void APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
|
||||
GLAPI void APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
|
||||
GLAPI void APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
|
||||
GLAPI void APIENTRY glClear (GLbitfield mask);
|
||||
GLAPI void APIENTRY glClearColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
|
||||
GLAPI void APIENTRY glDisable (GLenum cap);
|
||||
GLAPI void APIENTRY glEnable (GLenum cap);
|
||||
GLAPI void APIENTRY glFlush (void);
|
||||
GLAPI void APIENTRY glPixelStorei (GLenum pname, GLint param);
|
||||
GLAPI void APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
|
||||
GLAPI GLenum APIENTRY glGetError (void);
|
||||
GLAPI void APIENTRY glGetIntegerv (GLenum pname, GLint *data);
|
||||
GLAPI const GLubyte *APIENTRY glGetString (GLenum name);
|
||||
GLAPI GLboolean APIENTRY glIsEnabled (GLenum cap);
|
||||
GLAPI void APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
|
||||
#endif
|
||||
#endif /* GL_VERSION_1_0 */
|
||||
#ifndef GL_VERSION_1_1
|
||||
typedef khronos_float_t GLclampf;
|
||||
typedef double GLclampd;
|
||||
#define GL_TEXTURE_BINDING_2D 0x8069
|
||||
typedef void (APIENTRYP PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices);
|
||||
typedef void (APIENTRYP PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture);
|
||||
typedef void (APIENTRYP PFNGLDELETETEXTURESPROC) (GLsizei n, const GLuint *textures);
|
||||
typedef void (APIENTRYP PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const void *indices);
|
||||
GLAPI void APIENTRY glBindTexture (GLenum target, GLuint texture);
|
||||
GLAPI void APIENTRY glDeleteTextures (GLsizei n, const GLuint *textures);
|
||||
GLAPI void APIENTRY glGenTextures (GLsizei n, GLuint *textures);
|
||||
#endif
|
||||
#endif /* GL_VERSION_1_1 */
|
||||
#ifndef GL_VERSION_1_3
|
||||
#define GL_TEXTURE0 0x84C0
|
||||
#define GL_ACTIVE_TEXTURE 0x84E0
|
||||
typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glActiveTexture (GLenum texture);
|
||||
#endif
|
||||
#endif /* GL_VERSION_1_3 */
|
||||
#ifndef GL_VERSION_1_4
|
||||
#define GL_BLEND_DST_RGB 0x80C8
|
||||
#define GL_BLEND_SRC_RGB 0x80C9
|
||||
#define GL_BLEND_DST_ALPHA 0x80CA
|
||||
#define GL_BLEND_SRC_ALPHA 0x80CB
|
||||
#define GL_FUNC_ADD 0x8006
|
||||
typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
|
||||
typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
|
||||
GLAPI void APIENTRY glBlendEquation (GLenum mode);
|
||||
#endif
|
||||
#endif /* GL_VERSION_1_4 */
|
||||
#ifndef GL_VERSION_1_5
|
||||
typedef khronos_ssize_t GLsizeiptr;
|
||||
typedef khronos_intptr_t GLintptr;
|
||||
#define GL_ARRAY_BUFFER 0x8892
|
||||
#define GL_ELEMENT_ARRAY_BUFFER 0x8893
|
||||
#define GL_ARRAY_BUFFER_BINDING 0x8894
|
||||
#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
|
||||
#define GL_STREAM_DRAW 0x88E0
|
||||
typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
|
||||
typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
|
||||
typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
|
||||
typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
|
||||
typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glBindBuffer (GLenum target, GLuint buffer);
|
||||
GLAPI void APIENTRY glDeleteBuffers (GLsizei n, const GLuint *buffers);
|
||||
GLAPI void APIENTRY glGenBuffers (GLsizei n, GLuint *buffers);
|
||||
GLAPI void APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
|
||||
GLAPI void APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
|
||||
#endif
|
||||
#endif /* GL_VERSION_1_5 */
|
||||
#ifndef GL_VERSION_2_0
|
||||
typedef char GLchar;
|
||||
typedef khronos_int16_t GLshort;
|
||||
typedef khronos_int8_t GLbyte;
|
||||
typedef khronos_uint16_t GLushort;
|
||||
#define GL_BLEND_EQUATION_RGB 0x8009
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
|
||||
#define GL_BLEND_EQUATION_ALPHA 0x883D
|
||||
#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
|
||||
#define GL_FRAGMENT_SHADER 0x8B30
|
||||
#define GL_VERTEX_SHADER 0x8B31
|
||||
#define GL_COMPILE_STATUS 0x8B81
|
||||
#define GL_LINK_STATUS 0x8B82
|
||||
#define GL_INFO_LOG_LENGTH 0x8B84
|
||||
#define GL_CURRENT_PROGRAM 0x8B8D
|
||||
#define GL_UPPER_LEFT 0x8CA2
|
||||
typedef void (APIENTRYP PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha);
|
||||
typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
|
||||
typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader);
|
||||
typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void);
|
||||
typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type);
|
||||
typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program);
|
||||
typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader);
|
||||
typedef void (APIENTRYP PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader);
|
||||
typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index);
|
||||
typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
|
||||
typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name);
|
||||
typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
|
||||
typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
|
||||
typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
|
||||
typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
|
||||
typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
|
||||
typedef void (APIENTRYP PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params);
|
||||
typedef void (APIENTRYP PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, void **pointer);
|
||||
typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program);
|
||||
typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
|
||||
typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program);
|
||||
typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
|
||||
typedef void (APIENTRYP PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
|
||||
typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
|
||||
GLAPI void APIENTRY glAttachShader (GLuint program, GLuint shader);
|
||||
GLAPI void APIENTRY glCompileShader (GLuint shader);
|
||||
GLAPI GLuint APIENTRY glCreateProgram (void);
|
||||
GLAPI GLuint APIENTRY glCreateShader (GLenum type);
|
||||
GLAPI void APIENTRY glDeleteProgram (GLuint program);
|
||||
GLAPI void APIENTRY glDeleteShader (GLuint shader);
|
||||
GLAPI void APIENTRY glDetachShader (GLuint program, GLuint shader);
|
||||
GLAPI void APIENTRY glDisableVertexAttribArray (GLuint index);
|
||||
GLAPI void APIENTRY glEnableVertexAttribArray (GLuint index);
|
||||
GLAPI GLint APIENTRY glGetAttribLocation (GLuint program, const GLchar *name);
|
||||
GLAPI void APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint *params);
|
||||
GLAPI void APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
|
||||
GLAPI void APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint *params);
|
||||
GLAPI void APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
|
||||
GLAPI GLint APIENTRY glGetUniformLocation (GLuint program, const GLchar *name);
|
||||
GLAPI void APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint *params);
|
||||
GLAPI void APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void **pointer);
|
||||
GLAPI void APIENTRY glLinkProgram (GLuint program);
|
||||
GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
|
||||
GLAPI void APIENTRY glUseProgram (GLuint program);
|
||||
GLAPI void APIENTRY glUniform1i (GLint location, GLint v0);
|
||||
GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
|
||||
GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
|
||||
#endif
|
||||
#endif /* GL_VERSION_2_0 */
|
||||
#ifndef GL_VERSION_3_0
|
||||
typedef khronos_uint16_t GLhalf;
|
||||
#define GL_MAJOR_VERSION 0x821B
|
||||
#define GL_MINOR_VERSION 0x821C
|
||||
#define GL_NUM_EXTENSIONS 0x821D
|
||||
#define GL_FRAMEBUFFER_SRGB 0x8DB9
|
||||
#define GL_VERTEX_ARRAY_BINDING 0x85B5
|
||||
typedef void (APIENTRYP PFNGLGETBOOLEANI_VPROC) (GLenum target, GLuint index, GLboolean *data);
|
||||
typedef void (APIENTRYP PFNGLGETINTEGERI_VPROC) (GLenum target, GLuint index, GLint *data);
|
||||
typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGIPROC) (GLenum name, GLuint index);
|
||||
typedef void (APIENTRYP PFNGLBINDVERTEXARRAYPROC) (GLuint array);
|
||||
typedef void (APIENTRYP PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint *arrays);
|
||||
typedef void (APIENTRYP PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint *arrays);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI const GLubyte *APIENTRY glGetStringi (GLenum name, GLuint index);
|
||||
GLAPI void APIENTRY glBindVertexArray (GLuint array);
|
||||
GLAPI void APIENTRY glDeleteVertexArrays (GLsizei n, const GLuint *arrays);
|
||||
GLAPI void APIENTRY glGenVertexArrays (GLsizei n, GLuint *arrays);
|
||||
#endif
|
||||
#endif /* GL_VERSION_3_0 */
|
||||
#ifndef GL_VERSION_3_1
|
||||
#define GL_VERSION_3_1 1
|
||||
#define GL_PRIMITIVE_RESTART 0x8F9D
|
||||
#endif /* GL_VERSION_3_1 */
|
||||
#ifndef GL_VERSION_3_2
|
||||
#define GL_VERSION_3_2 1
|
||||
typedef struct __GLsync *GLsync;
|
||||
typedef khronos_uint64_t GLuint64;
|
||||
typedef khronos_int64_t GLint64;
|
||||
typedef void (APIENTRYP PFNGLDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
|
||||
typedef void (APIENTRYP PFNGLGETINTEGER64I_VPROC) (GLenum target, GLuint index, GLint64 *data);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glDrawElementsBaseVertex (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
|
||||
#endif
|
||||
#endif /* GL_VERSION_3_2 */
|
||||
#ifndef GL_VERSION_3_3
|
||||
#define GL_VERSION_3_3 1
|
||||
#define GL_SAMPLER_BINDING 0x8919
|
||||
typedef void (APIENTRYP PFNGLBINDSAMPLERPROC) (GLuint unit, GLuint sampler);
|
||||
#ifdef GL_GLEXT_PROTOTYPES
|
||||
GLAPI void APIENTRY glBindSampler (GLuint unit, GLuint sampler);
|
||||
#endif
|
||||
#endif /* GL_VERSION_3_3 */
|
||||
#ifndef GL_VERSION_4_1
|
||||
typedef void (APIENTRYP PFNGLGETFLOATI_VPROC) (GLenum target, GLuint index, GLfloat *data);
|
||||
typedef void (APIENTRYP PFNGLGETDOUBLEI_VPROC) (GLenum target, GLuint index, GLdouble *data);
|
||||
#endif /* GL_VERSION_4_1 */
|
||||
#ifndef GL_VERSION_4_3
|
||||
typedef void (APIENTRY *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
|
||||
#endif /* GL_VERSION_4_3 */
|
||||
#ifndef GL_VERSION_4_5
|
||||
#define GL_CLIP_ORIGIN 0x935C
|
||||
typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint *param);
|
||||
typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI64_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint64 *param);
|
||||
#endif /* GL_VERSION_4_5 */
|
||||
#ifndef GL_ARB_bindless_texture
|
||||
typedef khronos_uint64_t GLuint64EXT;
|
||||
#endif /* GL_ARB_bindless_texture */
|
||||
#ifndef GL_ARB_cl_event
|
||||
struct _cl_context;
|
||||
struct _cl_event;
|
||||
#endif /* GL_ARB_cl_event */
|
||||
#ifndef GL_ARB_clip_control
|
||||
#define GL_ARB_clip_control 1
|
||||
#endif /* GL_ARB_clip_control */
|
||||
#ifndef GL_ARB_debug_output
|
||||
typedef void (APIENTRY *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
|
||||
#endif /* GL_ARB_debug_output */
|
||||
#ifndef GL_EXT_EGL_image_storage
|
||||
typedef void *GLeglImageOES;
|
||||
#endif /* GL_EXT_EGL_image_storage */
|
||||
#ifndef GL_EXT_direct_state_access
|
||||
typedef void (APIENTRYP PFNGLGETFLOATI_VEXTPROC) (GLenum pname, GLuint index, GLfloat *params);
|
||||
typedef void (APIENTRYP PFNGLGETDOUBLEI_VEXTPROC) (GLenum pname, GLuint index, GLdouble *params);
|
||||
typedef void (APIENTRYP PFNGLGETPOINTERI_VEXTPROC) (GLenum pname, GLuint index, void **params);
|
||||
typedef void (APIENTRYP PFNGLGETVERTEXARRAYINTEGERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, GLint *param);
|
||||
typedef void (APIENTRYP PFNGLGETVERTEXARRAYPOINTERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, void **param);
|
||||
#endif /* GL_EXT_direct_state_access */
|
||||
#ifndef GL_NV_draw_vulkan_image
|
||||
typedef void (APIENTRY *GLVULKANPROCNV)(void);
|
||||
#endif /* GL_NV_draw_vulkan_image */
|
||||
#ifndef GL_NV_gpu_shader5
|
||||
typedef khronos_int64_t GLint64EXT;
|
||||
#endif /* GL_NV_gpu_shader5 */
|
||||
#ifndef GL_NV_vertex_buffer_unified_memory
|
||||
typedef void (APIENTRYP PFNGLGETINTEGERUI64I_VNVPROC) (GLenum value, GLuint index, GLuint64EXT *result);
|
||||
#endif /* GL_NV_vertex_buffer_unified_memory */
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef GL3W_API
|
||||
#define GL3W_API
|
||||
#endif
|
||||
|
||||
#ifndef __gl_h_
|
||||
#define __gl_h_
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define GL3W_OK 0
|
||||
#define GL3W_ERROR_INIT -1
|
||||
#define GL3W_ERROR_LIBRARY_OPEN -2
|
||||
#define GL3W_ERROR_OPENGL_VERSION -3
|
||||
|
||||
typedef void (*GL3WglProc)(void);
|
||||
typedef GL3WglProc (*GL3WGetProcAddressProc)(const char *proc);
|
||||
|
||||
/* gl3w api */
|
||||
GL3W_API int imgl3wInit(void);
|
||||
GL3W_API int imgl3wInit2(GL3WGetProcAddressProc proc);
|
||||
GL3W_API int imgl3wIsSupported(int major, int minor);
|
||||
GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc);
|
||||
|
||||
/* gl3w internal state */
|
||||
union GL3WProcs {
|
||||
GL3WglProc ptr[58];
|
||||
struct {
|
||||
PFNGLACTIVETEXTUREPROC ActiveTexture;
|
||||
PFNGLATTACHSHADERPROC AttachShader;
|
||||
PFNGLBINDBUFFERPROC BindBuffer;
|
||||
PFNGLBINDSAMPLERPROC BindSampler;
|
||||
PFNGLBINDTEXTUREPROC BindTexture;
|
||||
PFNGLBINDVERTEXARRAYPROC BindVertexArray;
|
||||
PFNGLBLENDEQUATIONPROC BlendEquation;
|
||||
PFNGLBLENDEQUATIONSEPARATEPROC BlendEquationSeparate;
|
||||
PFNGLBLENDFUNCSEPARATEPROC BlendFuncSeparate;
|
||||
PFNGLBUFFERDATAPROC BufferData;
|
||||
PFNGLBUFFERSUBDATAPROC BufferSubData;
|
||||
PFNGLCLEARPROC Clear;
|
||||
PFNGLCLEARCOLORPROC ClearColor;
|
||||
PFNGLCOMPILESHADERPROC CompileShader;
|
||||
PFNGLCREATEPROGRAMPROC CreateProgram;
|
||||
PFNGLCREATESHADERPROC CreateShader;
|
||||
PFNGLDELETEBUFFERSPROC DeleteBuffers;
|
||||
PFNGLDELETEPROGRAMPROC DeleteProgram;
|
||||
PFNGLDELETESHADERPROC DeleteShader;
|
||||
PFNGLDELETETEXTURESPROC DeleteTextures;
|
||||
PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays;
|
||||
PFNGLDETACHSHADERPROC DetachShader;
|
||||
PFNGLDISABLEPROC Disable;
|
||||
PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray;
|
||||
PFNGLDRAWELEMENTSPROC DrawElements;
|
||||
PFNGLDRAWELEMENTSBASEVERTEXPROC DrawElementsBaseVertex;
|
||||
PFNGLENABLEPROC Enable;
|
||||
PFNGLENABLEVERTEXATTRIBARRAYPROC EnableVertexAttribArray;
|
||||
PFNGLFLUSHPROC Flush;
|
||||
PFNGLGENBUFFERSPROC GenBuffers;
|
||||
PFNGLGENTEXTURESPROC GenTextures;
|
||||
PFNGLGENVERTEXARRAYSPROC GenVertexArrays;
|
||||
PFNGLGETATTRIBLOCATIONPROC GetAttribLocation;
|
||||
PFNGLGETERRORPROC GetError;
|
||||
PFNGLGETINTEGERVPROC GetIntegerv;
|
||||
PFNGLGETPROGRAMINFOLOGPROC GetProgramInfoLog;
|
||||
PFNGLGETPROGRAMIVPROC GetProgramiv;
|
||||
PFNGLGETSHADERINFOLOGPROC GetShaderInfoLog;
|
||||
PFNGLGETSHADERIVPROC GetShaderiv;
|
||||
PFNGLGETSTRINGPROC GetString;
|
||||
PFNGLGETSTRINGIPROC GetStringi;
|
||||
PFNGLGETUNIFORMLOCATIONPROC GetUniformLocation;
|
||||
PFNGLGETVERTEXATTRIBPOINTERVPROC GetVertexAttribPointerv;
|
||||
PFNGLGETVERTEXATTRIBIVPROC GetVertexAttribiv;
|
||||
PFNGLISENABLEDPROC IsEnabled;
|
||||
PFNGLLINKPROGRAMPROC LinkProgram;
|
||||
PFNGLPIXELSTOREIPROC PixelStorei;
|
||||
PFNGLPOLYGONMODEPROC PolygonMode;
|
||||
PFNGLREADPIXELSPROC ReadPixels;
|
||||
PFNGLSCISSORPROC Scissor;
|
||||
PFNGLSHADERSOURCEPROC ShaderSource;
|
||||
PFNGLTEXIMAGE2DPROC TexImage2D;
|
||||
PFNGLTEXPARAMETERIPROC TexParameteri;
|
||||
PFNGLUNIFORM1IPROC Uniform1i;
|
||||
PFNGLUNIFORMMATRIX4FVPROC UniformMatrix4fv;
|
||||
PFNGLUSEPROGRAMPROC UseProgram;
|
||||
PFNGLVERTEXATTRIBPOINTERPROC VertexAttribPointer;
|
||||
PFNGLVIEWPORTPROC Viewport;
|
||||
} gl;
|
||||
};
|
||||
|
||||
GL3W_API extern union GL3WProcs imgl3wProcs;
|
||||
|
||||
/* OpenGL functions */
|
||||
#define glActiveTexture imgl3wProcs.gl.ActiveTexture
|
||||
#define glAttachShader imgl3wProcs.gl.AttachShader
|
||||
#define glBindBuffer imgl3wProcs.gl.BindBuffer
|
||||
#define glBindSampler imgl3wProcs.gl.BindSampler
|
||||
#define glBindTexture imgl3wProcs.gl.BindTexture
|
||||
#define glBindVertexArray imgl3wProcs.gl.BindVertexArray
|
||||
#define glBlendEquation imgl3wProcs.gl.BlendEquation
|
||||
#define glBlendEquationSeparate imgl3wProcs.gl.BlendEquationSeparate
|
||||
#define glBlendFuncSeparate imgl3wProcs.gl.BlendFuncSeparate
|
||||
#define glBufferData imgl3wProcs.gl.BufferData
|
||||
#define glBufferSubData imgl3wProcs.gl.BufferSubData
|
||||
#define glClear imgl3wProcs.gl.Clear
|
||||
#define glClearColor imgl3wProcs.gl.ClearColor
|
||||
#define glCompileShader imgl3wProcs.gl.CompileShader
|
||||
#define glCreateProgram imgl3wProcs.gl.CreateProgram
|
||||
#define glCreateShader imgl3wProcs.gl.CreateShader
|
||||
#define glDeleteBuffers imgl3wProcs.gl.DeleteBuffers
|
||||
#define glDeleteProgram imgl3wProcs.gl.DeleteProgram
|
||||
#define glDeleteShader imgl3wProcs.gl.DeleteShader
|
||||
#define glDeleteTextures imgl3wProcs.gl.DeleteTextures
|
||||
#define glDeleteVertexArrays imgl3wProcs.gl.DeleteVertexArrays
|
||||
#define glDetachShader imgl3wProcs.gl.DetachShader
|
||||
#define glDisable imgl3wProcs.gl.Disable
|
||||
#define glDisableVertexAttribArray imgl3wProcs.gl.DisableVertexAttribArray
|
||||
#define glDrawElements imgl3wProcs.gl.DrawElements
|
||||
#define glDrawElementsBaseVertex imgl3wProcs.gl.DrawElementsBaseVertex
|
||||
#define glEnable imgl3wProcs.gl.Enable
|
||||
#define glEnableVertexAttribArray imgl3wProcs.gl.EnableVertexAttribArray
|
||||
#define glFlush imgl3wProcs.gl.Flush
|
||||
#define glGenBuffers imgl3wProcs.gl.GenBuffers
|
||||
#define glGenTextures imgl3wProcs.gl.GenTextures
|
||||
#define glGenVertexArrays imgl3wProcs.gl.GenVertexArrays
|
||||
#define glGetAttribLocation imgl3wProcs.gl.GetAttribLocation
|
||||
#define glGetError imgl3wProcs.gl.GetError
|
||||
#define glGetIntegerv imgl3wProcs.gl.GetIntegerv
|
||||
#define glGetProgramInfoLog imgl3wProcs.gl.GetProgramInfoLog
|
||||
#define glGetProgramiv imgl3wProcs.gl.GetProgramiv
|
||||
#define glGetShaderInfoLog imgl3wProcs.gl.GetShaderInfoLog
|
||||
#define glGetShaderiv imgl3wProcs.gl.GetShaderiv
|
||||
#define glGetString imgl3wProcs.gl.GetString
|
||||
#define glGetStringi imgl3wProcs.gl.GetStringi
|
||||
#define glGetUniformLocation imgl3wProcs.gl.GetUniformLocation
|
||||
#define glGetVertexAttribPointerv imgl3wProcs.gl.GetVertexAttribPointerv
|
||||
#define glGetVertexAttribiv imgl3wProcs.gl.GetVertexAttribiv
|
||||
#define glIsEnabled imgl3wProcs.gl.IsEnabled
|
||||
#define glLinkProgram imgl3wProcs.gl.LinkProgram
|
||||
#define glPixelStorei imgl3wProcs.gl.PixelStorei
|
||||
#define glPolygonMode imgl3wProcs.gl.PolygonMode
|
||||
#define glReadPixels imgl3wProcs.gl.ReadPixels
|
||||
#define glScissor imgl3wProcs.gl.Scissor
|
||||
#define glShaderSource imgl3wProcs.gl.ShaderSource
|
||||
#define glTexImage2D imgl3wProcs.gl.TexImage2D
|
||||
#define glTexParameteri imgl3wProcs.gl.TexParameteri
|
||||
#define glUniform1i imgl3wProcs.gl.Uniform1i
|
||||
#define glUniformMatrix4fv imgl3wProcs.gl.UniformMatrix4fv
|
||||
#define glUseProgram imgl3wProcs.gl.UseProgram
|
||||
#define glVertexAttribPointer imgl3wProcs.gl.VertexAttribPointer
|
||||
#define glViewport imgl3wProcs.gl.Viewport
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef IMGL3W_IMPL
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
||||
|
||||
#if defined(_WIN32)
|
||||
#ifndef WIN32_LEAN_AND_MEAN
|
||||
#define WIN32_LEAN_AND_MEAN 1
|
||||
#endif
|
||||
#include <windows.h>
|
||||
|
||||
static HMODULE libgl;
|
||||
typedef PROC(__stdcall* GL3WglGetProcAddr)(LPCSTR);
|
||||
static GL3WglGetProcAddr wgl_get_proc_address;
|
||||
|
||||
static int open_libgl(void)
|
||||
{
|
||||
libgl = LoadLibraryA("opengl32.dll");
|
||||
if (!libgl)
|
||||
return GL3W_ERROR_LIBRARY_OPEN;
|
||||
wgl_get_proc_address = (GL3WglGetProcAddr)GetProcAddress(libgl, "wglGetProcAddress");
|
||||
return GL3W_OK;
|
||||
}
|
||||
|
||||
static void close_libgl(void) { FreeLibrary(libgl); }
|
||||
static GL3WglProc get_proc(const char *proc)
|
||||
{
|
||||
GL3WglProc res;
|
||||
res = (GL3WglProc)wgl_get_proc_address(proc);
|
||||
if (!res)
|
||||
res = (GL3WglProc)GetProcAddress(libgl, proc);
|
||||
return res;
|
||||
}
|
||||
#elif defined(__APPLE__)
|
||||
#include <dlfcn.h>
|
||||
|
||||
static void *libgl;
|
||||
static int open_libgl(void)
|
||||
{
|
||||
libgl = dlopen("/System/Library/Frameworks/OpenGL.framework/OpenGL", RTLD_LAZY | RTLD_LOCAL);
|
||||
if (!libgl)
|
||||
return GL3W_ERROR_LIBRARY_OPEN;
|
||||
return GL3W_OK;
|
||||
}
|
||||
|
||||
static void close_libgl(void) { dlclose(libgl); }
|
||||
|
||||
static GL3WglProc get_proc(const char *proc)
|
||||
{
|
||||
GL3WglProc res;
|
||||
*(void **)(&res) = dlsym(libgl, proc);
|
||||
return res;
|
||||
}
|
||||
#else
|
||||
#include <dlfcn.h>
|
||||
|
||||
static void *libgl;
|
||||
static GL3WglProc (*glx_get_proc_address)(const GLubyte *);
|
||||
|
||||
static int open_libgl(void)
|
||||
{
|
||||
libgl = dlopen("libGL.so.1", RTLD_LAZY | RTLD_LOCAL);
|
||||
if (!libgl)
|
||||
return GL3W_ERROR_LIBRARY_OPEN;
|
||||
*(void **)(&glx_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB");
|
||||
return GL3W_OK;
|
||||
}
|
||||
|
||||
static void close_libgl(void) { dlclose(libgl); }
|
||||
|
||||
static GL3WglProc get_proc(const char *proc)
|
||||
{
|
||||
GL3WglProc res;
|
||||
res = glx_get_proc_address((const GLubyte *)proc);
|
||||
if (!res)
|
||||
*(void **)(&res) = dlsym(libgl, proc);
|
||||
return res;
|
||||
}
|
||||
#endif
|
||||
|
||||
static struct { int major, minor; } version;
|
||||
|
||||
static int parse_version(void)
|
||||
{
|
||||
if (!glGetIntegerv)
|
||||
return GL3W_ERROR_INIT;
|
||||
glGetIntegerv(GL_MAJOR_VERSION, &version.major);
|
||||
glGetIntegerv(GL_MINOR_VERSION, &version.minor);
|
||||
if (version.major < 3)
|
||||
return GL3W_ERROR_OPENGL_VERSION;
|
||||
return GL3W_OK;
|
||||
}
|
||||
|
||||
static void load_procs(GL3WGetProcAddressProc proc);
|
||||
|
||||
int imgl3wInit(void)
|
||||
{
|
||||
int res = open_libgl();
|
||||
if (res)
|
||||
return res;
|
||||
atexit(close_libgl);
|
||||
return imgl3wInit2(get_proc);
|
||||
}
|
||||
|
||||
int imgl3wInit2(GL3WGetProcAddressProc proc)
|
||||
{
|
||||
load_procs(proc);
|
||||
return parse_version();
|
||||
}
|
||||
|
||||
int imgl3wIsSupported(int major, int minor)
|
||||
{
|
||||
if (major < 3)
|
||||
return 0;
|
||||
if (version.major == major)
|
||||
return version.minor >= minor;
|
||||
return version.major >= major;
|
||||
}
|
||||
|
||||
GL3WglProc imgl3wGetProcAddress(const char *proc) { return get_proc(proc); }
|
||||
|
||||
static const char *proc_names[] = {
|
||||
"glActiveTexture",
|
||||
"glAttachShader",
|
||||
"glBindBuffer",
|
||||
"glBindSampler",
|
||||
"glBindTexture",
|
||||
"glBindVertexArray",
|
||||
"glBlendEquation",
|
||||
"glBlendEquationSeparate",
|
||||
"glBlendFuncSeparate",
|
||||
"glBufferData",
|
||||
"glBufferSubData",
|
||||
"glClear",
|
||||
"glClearColor",
|
||||
"glCompileShader",
|
||||
"glCreateProgram",
|
||||
"glCreateShader",
|
||||
"glDeleteBuffers",
|
||||
"glDeleteProgram",
|
||||
"glDeleteShader",
|
||||
"glDeleteTextures",
|
||||
"glDeleteVertexArrays",
|
||||
"glDetachShader",
|
||||
"glDisable",
|
||||
"glDisableVertexAttribArray",
|
||||
"glDrawElements",
|
||||
"glDrawElementsBaseVertex",
|
||||
"glEnable",
|
||||
"glEnableVertexAttribArray",
|
||||
"glFlush",
|
||||
"glGenBuffers",
|
||||
"glGenTextures",
|
||||
"glGenVertexArrays",
|
||||
"glGetAttribLocation",
|
||||
"glGetError",
|
||||
"glGetIntegerv",
|
||||
"glGetProgramInfoLog",
|
||||
"glGetProgramiv",
|
||||
"glGetShaderInfoLog",
|
||||
"glGetShaderiv",
|
||||
"glGetString",
|
||||
"glGetStringi",
|
||||
"glGetUniformLocation",
|
||||
"glGetVertexAttribPointerv",
|
||||
"glGetVertexAttribiv",
|
||||
"glIsEnabled",
|
||||
"glLinkProgram",
|
||||
"glPixelStorei",
|
||||
"glPolygonMode",
|
||||
"glReadPixels",
|
||||
"glScissor",
|
||||
"glShaderSource",
|
||||
"glTexImage2D",
|
||||
"glTexParameteri",
|
||||
"glUniform1i",
|
||||
"glUniformMatrix4fv",
|
||||
"glUseProgram",
|
||||
"glVertexAttribPointer",
|
||||
"glViewport",
|
||||
};
|
||||
|
||||
GL3W_API union GL3WProcs imgl3wProcs;
|
||||
|
||||
static void load_procs(GL3WGetProcAddressProc proc)
|
||||
{
|
||||
size_t i;
|
||||
for (i = 0; i < ARRAY_SIZE(proc_names); i++)
|
||||
imgl3wProcs.ptr[i] = proc(proc_names[i]);
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
|
@ -0,0 +1,571 @@
|
|||
// dear imgui: Platform Backend for SDL2
|
||||
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
|
||||
// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
|
||||
// (Prefer SDL 2.0.5+ for full feature support.)
|
||||
|
||||
// Implemented features:
|
||||
// [X] Platform: Clipboard support.
|
||||
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
|
||||
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
|
||||
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
|
||||
// Missing features:
|
||||
// [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
|
||||
|
||||
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
|
||||
// 2022-09-26: Inputs: Disable SDL 2.0.22 new "auto capture" (SDL_HINT_MOUSE_AUTO_CAPTURE) which prevents drag and drop across windows for multi-viewport support + don't capture when drag and dropping. (#5710)
|
||||
// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
|
||||
// 2022-03-22: Inputs: Fix mouse position issues when dragging outside of boundaries. SDL_CaptureMouse() erroneously still gives out LEAVE events when hovering OS decorations.
|
||||
// 2022-03-22: Inputs: Added support for extra mouse buttons (SDL_BUTTON_X1/SDL_BUTTON_X2).
|
||||
// 2022-02-04: Added SDL_Renderer* parameter to ImGui_ImplSDL2_InitForSDLRenderer(), so we can use SDL_GetRendererOutputSize() instead of SDL_GL_GetDrawableSize() when bound to a SDL_Renderer.
|
||||
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
|
||||
// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
|
||||
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
|
||||
// 2022-01-17: Inputs: always update key mods next and before key event (not in NewFrame) to fix input queue with very low framerates.
|
||||
// 2022-01-12: Update mouse inputs using SDL_MOUSEMOTION/SDL_WINDOWEVENT_LEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.
|
||||
// 2022-01-12: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.
|
||||
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
|
||||
// 2021-08-17: Calling io.AddFocusEvent() on SDL_WINDOWEVENT_FOCUS_GAINED/SDL_WINDOWEVENT_FOCUS_LOST.
|
||||
// 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using SDL_GetMouseFocus() + SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, requires SDL 2.0.5+)
|
||||
// 2021-06-29: *BREAKING CHANGE* Removed 'SDL_Window* window' parameter to ImGui_ImplSDL2_NewFrame() which was unnecessary.
|
||||
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
|
||||
// 2021-03-22: Rework global mouse pos availability check listing supported platforms explicitly, effectively fixing mouse access on Raspberry Pi. (#2837, #3950)
|
||||
// 2020-05-25: Misc: Report a zero display-size when window is minimized, to be consistent with other backends.
|
||||
// 2020-02-20: Inputs: Fixed mapping for ImGuiKey_KeyPadEnter (using SDL_SCANCODE_KP_ENTER instead of SDL_SCANCODE_RETURN2).
|
||||
// 2019-12-17: Inputs: On Wayland, use SDL_GetMouseState (because there is no global mouse state).
|
||||
// 2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
|
||||
// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
|
||||
// 2019-04-23: Inputs: Added support for SDL_GameController (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
|
||||
// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
|
||||
// 2018-12-21: Inputs: Workaround for Android/iOS which don't seem to handle focus related calls.
|
||||
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
|
||||
// 2018-11-14: Changed the signature of ImGui_ImplSDL2_ProcessEvent() to take a 'const SDL_Event*'.
|
||||
// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
|
||||
// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
|
||||
// 2018-06-08: Misc: Extracted imgui_impl_sdl.cpp/.h away from the old combined SDL2+OpenGL/Vulkan examples.
|
||||
// 2018-06-08: Misc: ImGui_ImplSDL2_InitForOpenGL() now takes a SDL_GLContext parameter.
|
||||
// 2018-05-09: Misc: Fixed clipboard paste memory leak (we didn't call SDL_FreeMemory on the data returned by SDL_GetClipboardText).
|
||||
// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
|
||||
// 2018-02-16: Inputs: Added support for mouse cursors, honoring ImGui::GetMouseCursor() value.
|
||||
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
|
||||
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
|
||||
// 2018-02-05: Misc: Using SDL_GetPerformanceCounter() instead of SDL_GetTicks() to be able to handle very high framerate (1000+ FPS).
|
||||
// 2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes.
|
||||
// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
|
||||
// 2018-01-19: Inputs: When available (SDL 2.0.4+) using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging. Otherwise (SDL 2.0.3 and before) testing for SDL_WINDOW_INPUT_FOCUS instead of SDL_WINDOW_MOUSE_FOCUS.
|
||||
// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
|
||||
// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
|
||||
// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
|
||||
|
||||
#include "imgui.h"
|
||||
#include "imgui_impl_sdl.h"
|
||||
|
||||
// SDL
|
||||
#include <SDL.h>
|
||||
#include <SDL_syswm.h>
|
||||
#if defined(__APPLE__)
|
||||
#include <TargetConditionals.h>
|
||||
#endif
|
||||
|
||||
#if SDL_VERSION_ATLEAST(2,0,4) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS) && !defined(__amigaos4__)
|
||||
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 1
|
||||
#else
|
||||
#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE 0
|
||||
#endif
|
||||
#define SDL_HAS_VULKAN SDL_VERSION_ATLEAST(2,0,6)
|
||||
|
||||
// SDL Data
|
||||
struct ImGui_ImplSDL2_Data
|
||||
{
|
||||
SDL_Window* Window;
|
||||
SDL_Renderer* Renderer;
|
||||
Uint64 Time;
|
||||
int MouseButtonsDown;
|
||||
SDL_Cursor* MouseCursors[ImGuiMouseCursor_COUNT];
|
||||
int PendingMouseLeaveFrame;
|
||||
char* ClipboardTextData;
|
||||
bool MouseCanUseGlobalState;
|
||||
|
||||
ImGui_ImplSDL2_Data() { memset((void*)this, 0, sizeof(*this)); }
|
||||
};
|
||||
|
||||
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
|
||||
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
|
||||
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
|
||||
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
|
||||
static ImGui_ImplSDL2_Data* ImGui_ImplSDL2_GetBackendData()
|
||||
{
|
||||
return ImGui::GetCurrentContext() ? (ImGui_ImplSDL2_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
|
||||
}
|
||||
|
||||
// Functions
|
||||
static const char* ImGui_ImplSDL2_GetClipboardText(void*)
|
||||
{
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
if (bd->ClipboardTextData)
|
||||
SDL_free(bd->ClipboardTextData);
|
||||
bd->ClipboardTextData = SDL_GetClipboardText();
|
||||
return bd->ClipboardTextData;
|
||||
}
|
||||
|
||||
static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
|
||||
{
|
||||
SDL_SetClipboardText(text);
|
||||
}
|
||||
|
||||
static ImGuiKey ImGui_ImplSDL2_KeycodeToImGuiKey(int keycode)
|
||||
{
|
||||
switch (keycode)
|
||||
{
|
||||
case SDLK_TAB: return ImGuiKey_Tab;
|
||||
case SDLK_LEFT: return ImGuiKey_LeftArrow;
|
||||
case SDLK_RIGHT: return ImGuiKey_RightArrow;
|
||||
case SDLK_UP: return ImGuiKey_UpArrow;
|
||||
case SDLK_DOWN: return ImGuiKey_DownArrow;
|
||||
case SDLK_PAGEUP: return ImGuiKey_PageUp;
|
||||
case SDLK_PAGEDOWN: return ImGuiKey_PageDown;
|
||||
case SDLK_HOME: return ImGuiKey_Home;
|
||||
case SDLK_END: return ImGuiKey_End;
|
||||
case SDLK_INSERT: return ImGuiKey_Insert;
|
||||
case SDLK_DELETE: return ImGuiKey_Delete;
|
||||
case SDLK_BACKSPACE: return ImGuiKey_Backspace;
|
||||
case SDLK_SPACE: return ImGuiKey_Space;
|
||||
case SDLK_RETURN: return ImGuiKey_Enter;
|
||||
case SDLK_ESCAPE: return ImGuiKey_Escape;
|
||||
case SDLK_QUOTE: return ImGuiKey_Apostrophe;
|
||||
case SDLK_COMMA: return ImGuiKey_Comma;
|
||||
case SDLK_MINUS: return ImGuiKey_Minus;
|
||||
case SDLK_PERIOD: return ImGuiKey_Period;
|
||||
case SDLK_SLASH: return ImGuiKey_Slash;
|
||||
case SDLK_SEMICOLON: return ImGuiKey_Semicolon;
|
||||
case SDLK_EQUALS: return ImGuiKey_Equal;
|
||||
case SDLK_LEFTBRACKET: return ImGuiKey_LeftBracket;
|
||||
case SDLK_BACKSLASH: return ImGuiKey_Backslash;
|
||||
case SDLK_RIGHTBRACKET: return ImGuiKey_RightBracket;
|
||||
case SDLK_BACKQUOTE: return ImGuiKey_GraveAccent;
|
||||
case SDLK_CAPSLOCK: return ImGuiKey_CapsLock;
|
||||
case SDLK_SCROLLLOCK: return ImGuiKey_ScrollLock;
|
||||
case SDLK_NUMLOCKCLEAR: return ImGuiKey_NumLock;
|
||||
case SDLK_PRINTSCREEN: return ImGuiKey_PrintScreen;
|
||||
case SDLK_PAUSE: return ImGuiKey_Pause;
|
||||
case SDLK_KP_0: return ImGuiKey_Keypad0;
|
||||
case SDLK_KP_1: return ImGuiKey_Keypad1;
|
||||
case SDLK_KP_2: return ImGuiKey_Keypad2;
|
||||
case SDLK_KP_3: return ImGuiKey_Keypad3;
|
||||
case SDLK_KP_4: return ImGuiKey_Keypad4;
|
||||
case SDLK_KP_5: return ImGuiKey_Keypad5;
|
||||
case SDLK_KP_6: return ImGuiKey_Keypad6;
|
||||
case SDLK_KP_7: return ImGuiKey_Keypad7;
|
||||
case SDLK_KP_8: return ImGuiKey_Keypad8;
|
||||
case SDLK_KP_9: return ImGuiKey_Keypad9;
|
||||
case SDLK_KP_PERIOD: return ImGuiKey_KeypadDecimal;
|
||||
case SDLK_KP_DIVIDE: return ImGuiKey_KeypadDivide;
|
||||
case SDLK_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
|
||||
case SDLK_KP_MINUS: return ImGuiKey_KeypadSubtract;
|
||||
case SDLK_KP_PLUS: return ImGuiKey_KeypadAdd;
|
||||
case SDLK_KP_ENTER: return ImGuiKey_KeypadEnter;
|
||||
case SDLK_KP_EQUALS: return ImGuiKey_KeypadEqual;
|
||||
case SDLK_LCTRL: return ImGuiKey_LeftCtrl;
|
||||
case SDLK_LSHIFT: return ImGuiKey_LeftShift;
|
||||
case SDLK_LALT: return ImGuiKey_LeftAlt;
|
||||
case SDLK_LGUI: return ImGuiKey_LeftSuper;
|
||||
case SDLK_RCTRL: return ImGuiKey_RightCtrl;
|
||||
case SDLK_RSHIFT: return ImGuiKey_RightShift;
|
||||
case SDLK_RALT: return ImGuiKey_RightAlt;
|
||||
case SDLK_RGUI: return ImGuiKey_RightSuper;
|
||||
case SDLK_APPLICATION: return ImGuiKey_Menu;
|
||||
case SDLK_0: return ImGuiKey_0;
|
||||
case SDLK_1: return ImGuiKey_1;
|
||||
case SDLK_2: return ImGuiKey_2;
|
||||
case SDLK_3: return ImGuiKey_3;
|
||||
case SDLK_4: return ImGuiKey_4;
|
||||
case SDLK_5: return ImGuiKey_5;
|
||||
case SDLK_6: return ImGuiKey_6;
|
||||
case SDLK_7: return ImGuiKey_7;
|
||||
case SDLK_8: return ImGuiKey_8;
|
||||
case SDLK_9: return ImGuiKey_9;
|
||||
case SDLK_a: return ImGuiKey_A;
|
||||
case SDLK_b: return ImGuiKey_B;
|
||||
case SDLK_c: return ImGuiKey_C;
|
||||
case SDLK_d: return ImGuiKey_D;
|
||||
case SDLK_e: return ImGuiKey_E;
|
||||
case SDLK_f: return ImGuiKey_F;
|
||||
case SDLK_g: return ImGuiKey_G;
|
||||
case SDLK_h: return ImGuiKey_H;
|
||||
case SDLK_i: return ImGuiKey_I;
|
||||
case SDLK_j: return ImGuiKey_J;
|
||||
case SDLK_k: return ImGuiKey_K;
|
||||
case SDLK_l: return ImGuiKey_L;
|
||||
case SDLK_m: return ImGuiKey_M;
|
||||
case SDLK_n: return ImGuiKey_N;
|
||||
case SDLK_o: return ImGuiKey_O;
|
||||
case SDLK_p: return ImGuiKey_P;
|
||||
case SDLK_q: return ImGuiKey_Q;
|
||||
case SDLK_r: return ImGuiKey_R;
|
||||
case SDLK_s: return ImGuiKey_S;
|
||||
case SDLK_t: return ImGuiKey_T;
|
||||
case SDLK_u: return ImGuiKey_U;
|
||||
case SDLK_v: return ImGuiKey_V;
|
||||
case SDLK_w: return ImGuiKey_W;
|
||||
case SDLK_x: return ImGuiKey_X;
|
||||
case SDLK_y: return ImGuiKey_Y;
|
||||
case SDLK_z: return ImGuiKey_Z;
|
||||
case SDLK_F1: return ImGuiKey_F1;
|
||||
case SDLK_F2: return ImGuiKey_F2;
|
||||
case SDLK_F3: return ImGuiKey_F3;
|
||||
case SDLK_F4: return ImGuiKey_F4;
|
||||
case SDLK_F5: return ImGuiKey_F5;
|
||||
case SDLK_F6: return ImGuiKey_F6;
|
||||
case SDLK_F7: return ImGuiKey_F7;
|
||||
case SDLK_F8: return ImGuiKey_F8;
|
||||
case SDLK_F9: return ImGuiKey_F9;
|
||||
case SDLK_F10: return ImGuiKey_F10;
|
||||
case SDLK_F11: return ImGuiKey_F11;
|
||||
case SDLK_F12: return ImGuiKey_F12;
|
||||
}
|
||||
return ImGuiKey_None;
|
||||
}
|
||||
|
||||
static void ImGui_ImplSDL2_UpdateKeyModifiers(SDL_Keymod sdl_key_mods)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.AddKeyEvent(ImGuiMod_Ctrl, (sdl_key_mods & KMOD_CTRL) != 0);
|
||||
io.AddKeyEvent(ImGuiMod_Shift, (sdl_key_mods & KMOD_SHIFT) != 0);
|
||||
io.AddKeyEvent(ImGuiMod_Alt, (sdl_key_mods & KMOD_ALT) != 0);
|
||||
io.AddKeyEvent(ImGuiMod_Super, (sdl_key_mods & KMOD_GUI) != 0);
|
||||
}
|
||||
|
||||
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
|
||||
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
|
||||
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
|
||||
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
|
||||
// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
|
||||
bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
|
||||
switch (event->type)
|
||||
{
|
||||
case SDL_MOUSEMOTION:
|
||||
{
|
||||
io.AddMousePosEvent((float)event->motion.x, (float)event->motion.y);
|
||||
return true;
|
||||
}
|
||||
case SDL_MOUSEWHEEL:
|
||||
{
|
||||
float wheel_x = (event->wheel.x > 0) ? 1.0f : (event->wheel.x < 0) ? -1.0f : 0.0f;
|
||||
float wheel_y = (event->wheel.y > 0) ? 1.0f : (event->wheel.y < 0) ? -1.0f : 0.0f;
|
||||
io.AddMouseWheelEvent(wheel_x, wheel_y);
|
||||
return true;
|
||||
}
|
||||
case SDL_MOUSEBUTTONDOWN:
|
||||
case SDL_MOUSEBUTTONUP:
|
||||
{
|
||||
int mouse_button = -1;
|
||||
if (event->button.button == SDL_BUTTON_LEFT) { mouse_button = 0; }
|
||||
if (event->button.button == SDL_BUTTON_RIGHT) { mouse_button = 1; }
|
||||
if (event->button.button == SDL_BUTTON_MIDDLE) { mouse_button = 2; }
|
||||
if (event->button.button == SDL_BUTTON_X1) { mouse_button = 3; }
|
||||
if (event->button.button == SDL_BUTTON_X2) { mouse_button = 4; }
|
||||
if (mouse_button == -1)
|
||||
break;
|
||||
io.AddMouseButtonEvent(mouse_button, (event->type == SDL_MOUSEBUTTONDOWN));
|
||||
bd->MouseButtonsDown = (event->type == SDL_MOUSEBUTTONDOWN) ? (bd->MouseButtonsDown | (1 << mouse_button)) : (bd->MouseButtonsDown & ~(1 << mouse_button));
|
||||
return true;
|
||||
}
|
||||
case SDL_TEXTINPUT:
|
||||
{
|
||||
io.AddInputCharactersUTF8(event->text.text);
|
||||
return true;
|
||||
}
|
||||
case SDL_KEYDOWN:
|
||||
case SDL_KEYUP:
|
||||
{
|
||||
ImGui_ImplSDL2_UpdateKeyModifiers((SDL_Keymod)event->key.keysym.mod);
|
||||
ImGuiKey key = ImGui_ImplSDL2_KeycodeToImGuiKey(event->key.keysym.sym);
|
||||
io.AddKeyEvent(key, (event->type == SDL_KEYDOWN));
|
||||
io.SetKeyEventNativeData(key, event->key.keysym.sym, event->key.keysym.scancode, event->key.keysym.scancode); // To support legacy indexing (<1.87 user code). Legacy backend uses SDLK_*** as indices to IsKeyXXX() functions.
|
||||
return true;
|
||||
}
|
||||
case SDL_WINDOWEVENT:
|
||||
{
|
||||
// - When capturing mouse, SDL will send a bunch of conflicting LEAVE/ENTER event on every mouse move, but the final ENTER tends to be right.
|
||||
// - However we won't get a correct LEAVE event for a captured window.
|
||||
// - In some cases, when detaching a window from main viewport SDL may send SDL_WINDOWEVENT_ENTER one frame too late,
|
||||
// causing SDL_WINDOWEVENT_LEAVE on previous frame to interrupt drag operation by clear mouse position. This is why
|
||||
// we delay process the SDL_WINDOWEVENT_LEAVE events by one frame. See issue #5012 for details.
|
||||
Uint8 window_event = event->window.event;
|
||||
if (window_event == SDL_WINDOWEVENT_ENTER)
|
||||
bd->PendingMouseLeaveFrame = 0;
|
||||
if (window_event == SDL_WINDOWEVENT_LEAVE)
|
||||
bd->PendingMouseLeaveFrame = ImGui::GetFrameCount() + 1;
|
||||
if (window_event == SDL_WINDOWEVENT_FOCUS_GAINED)
|
||||
io.AddFocusEvent(true);
|
||||
else if (event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
|
||||
io.AddFocusEvent(false);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
|
||||
|
||||
// Check and store if we are on a SDL backend that supports global mouse position
|
||||
// ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
|
||||
bool mouse_can_use_global_state = false;
|
||||
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
|
||||
const char* sdl_backend = SDL_GetCurrentVideoDriver();
|
||||
const char* global_mouse_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
|
||||
for (int n = 0; n < IM_ARRAYSIZE(global_mouse_whitelist); n++)
|
||||
if (strncmp(sdl_backend, global_mouse_whitelist[n], strlen(global_mouse_whitelist[n])) == 0)
|
||||
mouse_can_use_global_state = true;
|
||||
#endif
|
||||
|
||||
// Setup backend capabilities flags
|
||||
ImGui_ImplSDL2_Data* bd = IM_NEW(ImGui_ImplSDL2_Data)();
|
||||
io.BackendPlatformUserData = (void*)bd;
|
||||
io.BackendPlatformName = "imgui_impl_sdl";
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
|
||||
|
||||
bd->Window = window;
|
||||
bd->Renderer = renderer;
|
||||
bd->MouseCanUseGlobalState = mouse_can_use_global_state;
|
||||
|
||||
io.SetClipboardTextFn = ImGui_ImplSDL2_SetClipboardText;
|
||||
io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
|
||||
io.ClipboardUserData = nullptr;
|
||||
|
||||
// Load mouse cursors
|
||||
bd->MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
|
||||
bd->MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
|
||||
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
|
||||
bd->MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
|
||||
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
|
||||
|
||||
// Set platform dependent data in viewport
|
||||
#ifdef _WIN32
|
||||
SDL_SysWMinfo info;
|
||||
SDL_VERSION(&info.version);
|
||||
if (SDL_GetWindowWMInfo(window, &info))
|
||||
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)info.info.win.window;
|
||||
#else
|
||||
(void)window;
|
||||
#endif
|
||||
|
||||
// From 2.0.5: Set SDL hint to receive mouse click events on window focus, otherwise SDL doesn't emit the event.
|
||||
// Without this, when clicking to gain focus, our widgets wouldn't activate even though they showed as hovered.
|
||||
// (This is unfortunately a global SDL setting, so enabling it might have a side-effect on your application.
|
||||
// It is unlikely to make a difference, but if your app absolutely needs to ignore the initial on-focus click:
|
||||
// you can ignore SDL_MOUSEBUTTONDOWN events coming right after a SDL_WINDOWEVENT_FOCUS_GAINED)
|
||||
#ifdef SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH
|
||||
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
|
||||
#endif
|
||||
|
||||
// From 2.0.22: Disable auto-capture, this is preventing drag and drop across multiple windows (see #5710)
|
||||
#ifdef SDL_HINT_MOUSE_AUTO_CAPTURE
|
||||
SDL_SetHint(SDL_HINT_MOUSE_AUTO_CAPTURE, "0");
|
||||
#endif
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
|
||||
{
|
||||
IM_UNUSED(sdl_gl_context); // Viewport branch will need this.
|
||||
return ImGui_ImplSDL2_Init(window, nullptr);
|
||||
}
|
||||
|
||||
bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
|
||||
{
|
||||
#if !SDL_HAS_VULKAN
|
||||
IM_ASSERT(0 && "Unsupported");
|
||||
#endif
|
||||
return ImGui_ImplSDL2_Init(window, nullptr);
|
||||
}
|
||||
|
||||
bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window)
|
||||
{
|
||||
#if !defined(_WIN32)
|
||||
IM_ASSERT(0 && "Unsupported");
|
||||
#endif
|
||||
return ImGui_ImplSDL2_Init(window, nullptr);
|
||||
}
|
||||
|
||||
bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window)
|
||||
{
|
||||
return ImGui_ImplSDL2_Init(window, nullptr);
|
||||
}
|
||||
|
||||
bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer)
|
||||
{
|
||||
return ImGui_ImplSDL2_Init(window, renderer);
|
||||
}
|
||||
|
||||
void ImGui_ImplSDL2_Shutdown()
|
||||
{
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
|
||||
if (bd->ClipboardTextData)
|
||||
SDL_free(bd->ClipboardTextData);
|
||||
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
|
||||
SDL_FreeCursor(bd->MouseCursors[cursor_n]);
|
||||
|
||||
io.BackendPlatformName = nullptr;
|
||||
io.BackendPlatformUserData = nullptr;
|
||||
IM_DELETE(bd);
|
||||
}
|
||||
|
||||
static void ImGui_ImplSDL2_UpdateMouseData()
|
||||
{
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
|
||||
// We forward mouse input when hovered or captured (via SDL_MOUSEMOTION) or when focused (below)
|
||||
#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
|
||||
// SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger other operations outside
|
||||
SDL_CaptureMouse((bd->MouseButtonsDown != 0 && ImGui::GetDragDropPayload() == nullptr) ? SDL_TRUE : SDL_FALSE);
|
||||
SDL_Window* focused_window = SDL_GetKeyboardFocus();
|
||||
const bool is_app_focused = (bd->Window == focused_window);
|
||||
#else
|
||||
const bool is_app_focused = (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_INPUT_FOCUS) != 0; // SDL 2.0.3 and non-windowed systems: single-viewport only
|
||||
#endif
|
||||
if (is_app_focused)
|
||||
{
|
||||
// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
|
||||
if (io.WantSetMousePos)
|
||||
SDL_WarpMouseInWindow(bd->Window, (int)io.MousePos.x, (int)io.MousePos.y);
|
||||
|
||||
// (Optional) Fallback to provide mouse position when focused (SDL_MOUSEMOTION already provides this when hovered or captured)
|
||||
if (bd->MouseCanUseGlobalState && bd->MouseButtonsDown == 0)
|
||||
{
|
||||
int window_x, window_y, mouse_x_global, mouse_y_global;
|
||||
SDL_GetGlobalMouseState(&mouse_x_global, &mouse_y_global);
|
||||
SDL_GetWindowPosition(bd->Window, &window_x, &window_y);
|
||||
io.AddMousePosEvent((float)(mouse_x_global - window_x), (float)(mouse_y_global - window_y));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplSDL2_UpdateMouseCursor()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
|
||||
return;
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
|
||||
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
|
||||
if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
|
||||
{
|
||||
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
|
||||
SDL_ShowCursor(SDL_FALSE);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Show OS mouse cursor
|
||||
SDL_SetCursor(bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]);
|
||||
SDL_ShowCursor(SDL_TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
static void ImGui_ImplSDL2_UpdateGamepads()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
|
||||
return;
|
||||
|
||||
// Get gamepad
|
||||
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
|
||||
SDL_GameController* game_controller = SDL_GameControllerOpen(0);
|
||||
if (!game_controller)
|
||||
return;
|
||||
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
|
||||
|
||||
// Update gamepad inputs
|
||||
#define IM_SATURATE(V) (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V)
|
||||
#define MAP_BUTTON(KEY_NO, BUTTON_NO) { io.AddKeyEvent(KEY_NO, SDL_GameControllerGetButton(game_controller, BUTTON_NO) != 0); }
|
||||
#define MAP_ANALOG(KEY_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GameControllerGetAxis(game_controller, AXIS_NO) - V0) / (float)(V1 - V0); vn = IM_SATURATE(vn); io.AddKeyAnalogEvent(KEY_NO, vn > 0.1f, vn); }
|
||||
const int thumb_dead_zone = 8000; // SDL_gamecontroller.h suggests using this value.
|
||||
MAP_BUTTON(ImGuiKey_GamepadStart, SDL_CONTROLLER_BUTTON_START);
|
||||
MAP_BUTTON(ImGuiKey_GamepadBack, SDL_CONTROLLER_BUTTON_BACK);
|
||||
MAP_BUTTON(ImGuiKey_GamepadFaceLeft, SDL_CONTROLLER_BUTTON_X); // Xbox X, PS Square
|
||||
MAP_BUTTON(ImGuiKey_GamepadFaceRight, SDL_CONTROLLER_BUTTON_B); // Xbox B, PS Circle
|
||||
MAP_BUTTON(ImGuiKey_GamepadFaceUp, SDL_CONTROLLER_BUTTON_Y); // Xbox Y, PS Triangle
|
||||
MAP_BUTTON(ImGuiKey_GamepadFaceDown, SDL_CONTROLLER_BUTTON_A); // Xbox A, PS Cross
|
||||
MAP_BUTTON(ImGuiKey_GamepadDpadLeft, SDL_CONTROLLER_BUTTON_DPAD_LEFT);
|
||||
MAP_BUTTON(ImGuiKey_GamepadDpadRight, SDL_CONTROLLER_BUTTON_DPAD_RIGHT);
|
||||
MAP_BUTTON(ImGuiKey_GamepadDpadUp, SDL_CONTROLLER_BUTTON_DPAD_UP);
|
||||
MAP_BUTTON(ImGuiKey_GamepadDpadDown, SDL_CONTROLLER_BUTTON_DPAD_DOWN);
|
||||
MAP_BUTTON(ImGuiKey_GamepadL1, SDL_CONTROLLER_BUTTON_LEFTSHOULDER);
|
||||
MAP_BUTTON(ImGuiKey_GamepadR1, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);
|
||||
MAP_ANALOG(ImGuiKey_GamepadL2, SDL_CONTROLLER_AXIS_TRIGGERLEFT, 0.0f, 32767);
|
||||
MAP_ANALOG(ImGuiKey_GamepadR2, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 0.0f, 32767);
|
||||
MAP_BUTTON(ImGuiKey_GamepadL3, SDL_CONTROLLER_BUTTON_LEFTSTICK);
|
||||
MAP_BUTTON(ImGuiKey_GamepadR3, SDL_CONTROLLER_BUTTON_RIGHTSTICK);
|
||||
MAP_ANALOG(ImGuiKey_GamepadLStickLeft, SDL_CONTROLLER_AXIS_LEFTX, -thumb_dead_zone, -32768);
|
||||
MAP_ANALOG(ImGuiKey_GamepadLStickRight, SDL_CONTROLLER_AXIS_LEFTX, +thumb_dead_zone, +32767);
|
||||
MAP_ANALOG(ImGuiKey_GamepadLStickUp, SDL_CONTROLLER_AXIS_LEFTY, -thumb_dead_zone, -32768);
|
||||
MAP_ANALOG(ImGuiKey_GamepadLStickDown, SDL_CONTROLLER_AXIS_LEFTY, +thumb_dead_zone, +32767);
|
||||
MAP_ANALOG(ImGuiKey_GamepadRStickLeft, SDL_CONTROLLER_AXIS_RIGHTX, -thumb_dead_zone, -32768);
|
||||
MAP_ANALOG(ImGuiKey_GamepadRStickRight, SDL_CONTROLLER_AXIS_RIGHTX, +thumb_dead_zone, +32767);
|
||||
MAP_ANALOG(ImGuiKey_GamepadRStickUp, SDL_CONTROLLER_AXIS_RIGHTY, -thumb_dead_zone, -32768);
|
||||
MAP_ANALOG(ImGuiKey_GamepadRStickDown, SDL_CONTROLLER_AXIS_RIGHTY, +thumb_dead_zone, +32767);
|
||||
#undef MAP_BUTTON
|
||||
#undef MAP_ANALOG
|
||||
}
|
||||
|
||||
void ImGui_ImplSDL2_NewFrame()
|
||||
{
|
||||
ImGui_ImplSDL2_Data* bd = ImGui_ImplSDL2_GetBackendData();
|
||||
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplSDL2_Init()?");
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
|
||||
// Setup display size (every frame to accommodate for window resizing)
|
||||
int w, h;
|
||||
int display_w, display_h;
|
||||
SDL_GetWindowSize(bd->Window, &w, &h);
|
||||
if (SDL_GetWindowFlags(bd->Window) & SDL_WINDOW_MINIMIZED)
|
||||
w = h = 0;
|
||||
if (bd->Renderer != nullptr)
|
||||
SDL_GetRendererOutputSize(bd->Renderer, &display_w, &display_h);
|
||||
else
|
||||
SDL_GL_GetDrawableSize(bd->Window, &display_w, &display_h);
|
||||
io.DisplaySize = ImVec2((float)w, (float)h);
|
||||
if (w > 0 && h > 0)
|
||||
io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
|
||||
|
||||
// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
|
||||
static Uint64 frequency = SDL_GetPerformanceFrequency();
|
||||
Uint64 current_time = SDL_GetPerformanceCounter();
|
||||
io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
|
||||
bd->Time = current_time;
|
||||
|
||||
if (bd->PendingMouseLeaveFrame && bd->PendingMouseLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)
|
||||
{
|
||||
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
|
||||
bd->PendingMouseLeaveFrame = 0;
|
||||
}
|
||||
|
||||
ImGui_ImplSDL2_UpdateMouseData();
|
||||
ImGui_ImplSDL2_UpdateMouseCursor();
|
||||
|
||||
// Update game controllers (if enabled and available)
|
||||
ImGui_ImplSDL2_UpdateGamepads();
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
// dear imgui: Platform Backend for SDL2
|
||||
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
|
||||
// (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
|
||||
|
||||
// Implemented features:
|
||||
// [X] Platform: Clipboard support.
|
||||
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy SDL_SCANCODE_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
|
||||
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
|
||||
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
|
||||
// Missing features:
|
||||
// [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
|
||||
|
||||
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
#pragma once
|
||||
#include "imgui.h" // IMGUI_IMPL_API
|
||||
|
||||
struct SDL_Window;
|
||||
struct SDL_Renderer;
|
||||
typedef union SDL_Event SDL_Event;
|
||||
|
||||
extern "C" {
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForMetal(SDL_Window* window);
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_InitForSDLRenderer(SDL_Window* window, SDL_Renderer* renderer);
|
||||
IMGUI_IMPL_API void ImGui_ImplSDL2_Shutdown();
|
||||
IMGUI_IMPL_API void ImGui_ImplSDL2_NewFrame();
|
||||
IMGUI_IMPL_API bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
|
||||
}
|
||||
|
||||
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
|
||||
static inline void ImGui_ImplSDL2_NewFrame(SDL_Window*) { ImGui_ImplSDL2_NewFrame(); } // 1.84: removed unnecessary parameter
|
||||
#endif
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
const zgui = @import("gui.zig");
|
||||
|
||||
pub fn init(window: *anyopaque, glsl_version: []const u8) void {
|
||||
if (!ImGui_ImplGlfw_InitForOpenGL(window, true)) unreachable;
|
||||
if (!ImGui_ImplOpenGL3_Init(glsl_version.ptr)) unreachable;
|
||||
}
|
||||
|
||||
pub fn deinit() void {
|
||||
ImGui_ImplOpenGL3_Shutdown();
|
||||
ImGui_ImplGlfw_Shutdown();
|
||||
}
|
||||
|
||||
pub fn newFrame(width: f32, height: f32) void {
|
||||
ImGui_ImplOpenGL3_NewFrame();
|
||||
ImGui_ImplGlfw_NewFrame();
|
||||
|
||||
zgui.io.setDisplaySize(width, height);
|
||||
zgui.io.setDisplayFramebufferScale(1.0, 1.0);
|
||||
|
||||
zgui.newFrame();
|
||||
}
|
||||
|
||||
pub fn draw() void {
|
||||
zgui.render();
|
||||
ImGui_ImplOpenGL3_RenderDrawData(zgui.getDrawData());
|
||||
}
|
||||
|
||||
extern fn ImGui_ImplGlfw_InitForOpenGL(window: *anyopaque, install_callbacks: bool) bool;
|
||||
extern fn ImGui_ImplGlfw_Shutdown() void;
|
||||
extern fn ImGui_ImplGlfw_NewFrame() void;
|
||||
|
||||
extern fn ImGui_ImplOpenGL3_Init(glsl_version: [*]const u8) bool;
|
||||
extern fn ImGui_ImplOpenGL3_Shutdown() void;
|
||||
extern fn ImGui_ImplOpenGL3_NewFrame() void;
|
||||
extern fn ImGui_ImplOpenGL3_RenderDrawData(draw_data: *anyopaque) void; // ImDrawData
|
||||
|
|
@ -10,6 +10,7 @@ pub usingnamespace @import("gui.zig");
|
|||
pub const plot = @import("plot.zig");
|
||||
pub const backend = switch (@import("zgui_options").backend) {
|
||||
.glfw_wgpu => @import("backend_glfw_wgpu.zig"),
|
||||
.glfw_opengl3 => @import("backend_glfw_opengl3.zig"),
|
||||
.win32_dx12 => .{}, // TODO:
|
||||
.no_backend => .{},
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue