tringle

src/main.zig

@@ -1,11 +1,13 @@
 const sokol = @import("sokol");
+const shader = @import("shader");
+
 const slog = sokol.log;
 const sg = sokol.gfx;
 const sapp = sokol.app;
 const sglue = sokol.glue;
 const simgui = sokol.imgui;
 
-const imgui_pass_action = blk: {
+const main_action = blk: {
     var ret: sg.PassAction = .{};
 
     ret.colors[0] = .{
@@ -16,6 +18,19 @@ const imgui_pass_action = blk: {
     break :blk ret;
 };
 
+const imgui_action = blk: {
+    var ret: sg.PassAction = .{};
+
+    ret.colors[0] = .{
+        .load_action = .LOAD,
+    };
+
+    break :blk ret;
+};
+
+var bindings: sg.Bindings = .{};
+var pipeline: sg.Pipeline = .{};
+
 fn init() callconv(.c) void {
     sg.setup(.{
         .environment = sglue.environment(),
@@ -25,6 +40,24 @@ fn init() callconv(.c) void {
     simgui.setup(.{
         .logger = .{ .func = slog.func },
     });
+
+    bindings.vertex_buffers[0] = sg.makeBuffer(.{
+        .data = sg.asRange(&[_]f32{
+            0.0,  0.5,  0.5, 1.0, 0.0, 0.0, 1.0,
+            0.5,  -0.5, 0.5, 0.0, 1.0, 0.0, 1.0,
+            -0.5, -0.5, 0.5, 0.0, 0.0, 1.0, 1.0,
+        }),
+    });
+
+    pipeline = sg.makePipeline(.{
+        .shader = sg.makeShader(shader.programShaderDesc(sg.queryBackend())),
+        .layout = blk: {
+            var ret: sg.VertexLayoutState = .{};
+            ret.attrs[shader.ATTR_program_position_CS].format = .FLOAT3;
+            ret.attrs[shader.ATTR_program_color].format = .FLOAT4;
+            break :blk ret;
+        },
+    });
 }
 
 fn deinit() callconv(.c) void {
@@ -40,10 +73,21 @@ fn frame() callconv(.c) void {
         .dpi_scale = sapp.dpiScale(),
     });
 
+    // --- MAIN PASS ---
+
+    sg.beginPass(.{
+        .action = main_action,
+        .swapchain = sglue.swapchain(),
+    });
+    sg.applyPipeline(pipeline);
+    sg.applyBindings(bindings);
+    sg.draw(0, 3, 1);
+    sg.endPass();
+
     // --- IMGUI PASS ---
 
     sg.beginPass(.{
-        .action = imgui_pass_action,
+        .action = imgui_action,
         .swapchain = sglue.swapchain(),
     });
     simgui.render();