121 lines
3.6 KiB
Plaintext
121 lines
3.6 KiB
Plaintext
#import "modules/std.sx";
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#import "modules/sdl3.sx";
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#import "modules/opengl.sx";
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#import "modules/math";
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#import "modules/stb.sx";
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#import "ui";
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WIDTH :f32: 800;
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HEIGHT :f32: 600;
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save_snapshot :: (path: [:0]u8, w: s32, h: s32) {
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stride : s64 = xx (w * 4);
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buf_size : s64 = stride * xx h;
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pixels : [*]u8 = xx context.allocator.alloc(buf_size);
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glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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// Flip vertically (GL reads bottom-up, PNG expects top-down)
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row_buf : [*]u8 = xx context.allocator.alloc(stride);
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i : s32 = 0;
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while i < h / 2 {
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top : s64 = xx i * stride;
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bot : s64 = xx (h - 1 - i) * stride;
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memcpy(row_buf, @pixels[top], stride);
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memcpy(@pixels[top], @pixels[bot], stride);
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memcpy(@pixels[bot], row_buf, stride);
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i += 1;
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}
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stbi_write_png(path, w, h, 4, pixels, xx stride);
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out("Saved ");
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out(path);
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out("\n");
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}
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main :: () -> void {
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SDL_Init(SDL_INIT_VIDEO);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
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window := SDL_CreateWindow("SX UI Demo", xx WIDTH, xx HEIGHT, SDL_WINDOW_OPENGL);
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gl_ctx := SDL_GL_CreateContext(window);
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SDL_GL_MakeCurrent(window, gl_ctx);
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SDL_GL_SetSwapInterval(1);
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load_gl(SDL_GL_GetProcAddress);
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load_gl_ui(SDL_GL_GetProcAddress);
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// --- Build UI ---
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pipeline : UIPipeline = ---;
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pipeline.init(WIDTH, HEIGHT);
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// Create a simple layout: VStack with colored rects and a button
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root := VStack.{ spacing = 10.0, alignment = .center };
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header := RectView.{ color = COLOR_YELLOW, preferred_height = 80.0, corner_radius = 8.0 };
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root.add(xx header);
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btn := Button.{ label = "Click Me", font_size = 14.0, style = ButtonStyle.default(), on_tap = null };
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root.add(xx btn);
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body := HStack.{ spacing = 10.0, alignment = .center };
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left := RectView.{ color = COLOR_RED, preferred_width = 200.0, preferred_height = 300.0, corner_radius = 4.0 };
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body.add(xx left);
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right := RectView.{ color = COLOR_GREEN, preferred_width = 200.0, preferred_height = 300.0, corner_radius = 4.0 };
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body.add(xx right);
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root.add(xx body);
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footer := RectView.{ color = COLOR_DARK_GRAY, preferred_height = 60.0 };
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root.add(xx footer);
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pipeline.set_root(xx root);
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// --- Main loop ---
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running := true;
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sdl_event : SDL_Event = .none;
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while running {
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while SDL_PollEvent(sdl_event) {
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if sdl_event == {
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case .quit: running = false;
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case .key_up: (e) {
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if e.key == {
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case .escape: running = false;
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}
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}
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}
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// Forward to UI
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ui_event := translate_sdl_event(@sdl_event);
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if ui_event.type != .none {
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pipeline.dispatch_event(@ui_event);
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}
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}
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glClearColor(0.12, 0.12, 0.15, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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pipeline.tick();
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SDL_GL_SwapWindow(window);
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}
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// Re-render one frame for snapshot (back buffer is stale after swap)
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glClearColor(0.12, 0.12, 0.15, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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pipeline.tick();
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save_snapshot("goldens/last_frame.png", xx WIDTH, xx HEIGHT);
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SDL_GL_DestroyContext(gl_ctx);
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SDL_DestroyWindow(window);
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SDL_Quit();
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}
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