feat: add sdl2-opengl3 backend impl

This commit is contained in:
Rekai Nyangadzayi Musuka 2023-01-01 02:17:33 -06:00
parent 02d60643fd
commit 7a691c76ae
2 changed files with 44 additions and 0 deletions

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@ -0,0 +1,42 @@
const zgui = @import("gui.zig");
const SDL_GL_Context = *anyopaque;
pub fn init(window: *anyopaque, context: SDL_GL_Context, glsl_version: []const u8) void {
if (!ImGui_ImplSDL2_InitForOpenGL(window, context)) unreachable;
if (!ImGui_ImplOpenGL3_Init(glsl_version.ptr)) unreachable;
}
pub fn deinit() void {
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplSDL2_Shutdown();
}
pub fn newFrame(width: f32, height: f32) void {
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplSDL2_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());
}
pub fn processEvent(event: *anyopaque) bool {
return ImGui_ImplSDL2_ProcessEvent(event);
}
extern fn ImGui_ImplSDL2_InitForOpenGL(window: *anyopaque, sdl_gl_context: SDL_GL_Context) bool;
extern fn ImGui_ImplSDL2_Shutdown() void;
extern fn ImGui_ImplSDL2_NewFrame() void;
extern fn ImGui_ImplSDL2_ProcessEvent(event: *anyopaque) bool;
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;

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@ -10,6 +10,8 @@ pub usingnamespace @import("gui.zig");
pub const plot = @import("plot.zig"); pub const plot = @import("plot.zig");
pub const backend = switch (@import("zgui_options").backend) { pub const backend = switch (@import("zgui_options").backend) {
.glfw_wgpu => @import("backend_glfw_wgpu.zig"), .glfw_wgpu => @import("backend_glfw_wgpu.zig"),
.glfw_opengl3 => {}, // See glfw-opengl3-backend branch
.sdl2_opengl3 => @import("backend_sdl2_opengl3.zig"),
.win32_dx12 => .{}, // TODO: .win32_dx12 => .{}, // TODO:
.no_backend => .{}, .no_backend => .{},
}; };