Added readme

compile_shaders.bat

@@ -0,0 +1 @@
+sokol-shdc -i src/shaders/triangle.glsl -o src/shaders/triangle2.glsl.zig -l glsl410:metal_macos:hlsl5:glsl300es:wgsl -f sokol_zig

readme.md

@@ -0,0 +1,3 @@
+A little learning playground of [sokol](https://github.com/floooh/sokol) in [zig](https://ziglang.org/). Started on the gamejam at Decentrala, 9th June 2024.
+
+To build, you need to have zig master. Then just `zig build run` and that should be it!

src/main.zig

@@ -3,13 +3,16 @@ const sokol = @import("sokol");
 
 const sg = sokol.gfx;
 
-const shader = @import("shaders/triangle.glsl.zig");
+const shader = @import("shaders/triangle2.glsl.zig");
 
 var pass_action: sg.PassAction = .{};
 
 const state = struct {
     var bind: sg.Bindings = .{};
     var pip: sg.Pipeline = .{};
+    var vsParams: shader.VsParams = .{ .aspectRatio = 0.5 };
+    var fsParams: shader.FsParams = .{ .offset = .{ 0, 0, 0 } };
+    var indexCount: u16 = 0;
 };
 
 export fn init() void {
@@ -22,16 +25,75 @@ export fn init() void {
 
     std.log.info("Vertex buffers len: {}", .{state.bind.vertex_buffers.len});
 
+    const vertexCount = 100;
+    const radius: f32 = 0.7;
+
+    const cX: f32 = 0;
+    const cY: f32 = 0;
+
+    const attributesCount = 7;
+
+    var triangleVerts = std.mem.zeroes([vertexCount * attributesCount]f32);
+
+    const angleDiff: f32 = 1 / @as(f32, @floatFromInt(vertexCount));
+
+    var pcg = std.Random.Pcg.init(123);
+    const rand = pcg.random();
+
+    for (0..vertexCount) |i| {
+        const pi: f32 = @floatCast(std.math.pi);
+        const angle: f32 = @as(f32, @floatFromInt(i)) * angleDiff * pi * 2;
+
+        const x = radius * @cos(angle) + cX;
+        const y = radius * @sin(angle) + cY;
+
+        const si = i * attributesCount;
+        triangleVerts[si + 0] = x;
+        triangleVerts[si + 1] = y;
+        triangleVerts[si + 2] = 0.5;
+
+        triangleVerts[si + 3] = rand.float(f32);
+        triangleVerts[si + 4] = rand.float(f32);
+        triangleVerts[si + 5] = rand.float(f32);
+        triangleVerts[si + 6] = 1;
+    }
+
+    // var triangleVerts = [_]f32{
+    //     // positions     colors
+    //     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,
+    //     0.7,  0.5,  0.5, 0.0, 1.0, 0.0, 1.0,
+    // };
+
     state.bind.vertex_buffers[0] = sg.makeBuffer(.{
-        .data = sg.asRange(&[_]f32{
-            // positions     colors
-            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,
-        }),
+        .data = sg.asRange(&triangleVerts),
+    });
+
+    const trisCount = vertexCount - 2;
+
+    var indexBuffer: [trisCount * 3]u16 = undefined;
+    state.indexCount = indexBuffer.len;
+
+    // const indexBuffer = [_]u16{
+    //     0, 1, 2,
+    //     0, 2, 3,
+    // };
+
+    for (0..trisCount) |tri| {
+        const triu: u16 = @intCast(tri);
+        indexBuffer[tri * 3 + 0] = 0;
+        indexBuffer[tri * 3 + 1] = triu + 1;
+        indexBuffer[tri * 3 + 2] = triu + 2;
+    }
+
+    state.bind.index_buffer = sg.makeBuffer(.{
+        .type = .INDEXBUFFER,
+        .data = sg.asRange(&indexBuffer),
     });
 
     var pip_desc: sg.PipelineDesc = .{
+        .index_type = .UINT16,
         .shader = sg.makeShader(shader.triangleShaderDesc(sg.queryBackend())),
     };
 
@@ -57,11 +119,17 @@ export fn frame() void {
     col.g = @abs(@sin(timef()));
     col.r = @abs(@cos(timef()));
 
+    state.vsParams.aspectRatio = sokol.app.heightf() / sokol.app.widthf();
+
     sg.beginPass(.{ .action = pass_action, .swapchain = sokol.glue.swapchain() });
     sg.applyPipeline(state.pip);
+    state.fsParams.offset[0] = col.r;
+    sg.applyUniforms(.FS, shader.SLOT_fs_params, sg.asRange(&state.fsParams));
+    sg.applyUniforms(.VS, shader.SLOT_vs_params, sg.asRange(&state.vsParams));
     sg.applyBindings(state.bind);
-    sg.draw(0, 3, 1);
+    sg.draw(0, state.indexCount, 1);
     sg.endPass();
+
     sg.commit();
 }
 
@@ -74,6 +142,7 @@ pub fn main() !void {
         .cleanup_cb = cleanup,
         .width = 800,
         .height = 600,
+        .fullscreen = true,
         .icon = .{ .sokol_default = true },
         .window_title = "sokol hello",
         .logger = .{ .func = sokol.log.func },

src/shaders/triangle.glsl

@@ -1,4 +1,8 @@
 @vs vs
+uniform vs_params {
+    float aspectRatio;
+};
+
 in vec4 position;
 in vec4 color0;
 
@@ -6,16 +10,21 @@ out vec4 color;
 
 void main() {
     gl_Position = position;
+    gl_Position.x *= aspectRatio;
     color = color0;
 }
 @end
 
 @fs fs
+uniform fs_params {
+    vec3 offset;
+};
+
 in vec4 color;
 out vec4 frag_color;
 
 void main() {
-    frag_color = color;
+    frag_color = color * offset.r;
 }
 @end
 

src/shaders/triangle2.glsl.zig

@@ -0,0 +1,704 @@
+const sg = @import("sokol").gfx;
+//
+//    #version:1# (machine generated, don't edit!)
+//
+//    Generated by sokol-shdc (https://github.com/floooh/sokol-tools)
+//
+//    Cmdline:
+//        sokol-shdc -i src/shaders/triangle.glsl -o src/shaders/triangle2.glsl.zig -l glsl410:metal_macos:hlsl5:glsl300es:wgsl -f sokol_zig
+//
+//    Overview:
+//    =========
+//    Shader program: 'triangle':
+//        Get shader desc: shd.triangleShaderDesc(sg.queryBackend());
+//        Vertex shader: vs
+//            Attributes:
+//                ATTR_vs_position => 0
+//                ATTR_vs_color0 => 1
+//            Uniform block 'vs_params':
+//                Zig struct: VsParams
+//                Bind slot: SLOT_vs_params => 0
+//        Fragment shader: fs
+//            Uniform block 'fs_params':
+//                Zig struct: FsParams
+//                Bind slot: SLOT_fs_params => 0
+//
+pub const ATTR_vs_position = 0;
+pub const ATTR_vs_color0 = 1;
+pub const SLOT_vs_params = 0;
+pub const SLOT_fs_params = 0;
+pub const VsParams = extern struct {
+    aspectRatio: f32 align(16),
+    _pad_4: [12]u8 align(1) = undefined,
+};
+pub const FsParams = extern struct {
+    offset: [3]f32 align(16),
+    _pad_12: [4]u8 align(1) = undefined,
+};
+//
+//    #version 410
+//
+//    uniform vec4 vs_params[1];
+//    layout(location = 0) in vec4 position;
+//    layout(location = 0) out vec4 color;
+//    layout(location = 1) in vec4 color0;
+//
+//    void main()
+//    {
+//        gl_Position = position;
+//        gl_Position.x *= vs_params[0].x;
+//        color = color0;
+//    }
+//
+//
+const vs_source_glsl410 = [258]u8 {
+    0x23,0x76,0x65,0x72,0x73,0x69,0x6f,0x6e,0x20,0x34,0x31,0x30,0x0a,0x0a,0x75,0x6e,
+    0x69,0x66,0x6f,0x72,0x6d,0x20,0x76,0x65,0x63,0x34,0x20,0x76,0x73,0x5f,0x70,0x61,
+    0x72,0x61,0x6d,0x73,0x5b,0x31,0x5d,0x3b,0x0a,0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,
+    0x6c,0x6f,0x63,0x61,0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x30,0x29,0x20,0x69,0x6e,
+    0x20,0x76,0x65,0x63,0x34,0x20,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,0x6e,0x3b,0x0a,
+    0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,0x74,0x69,0x6f,0x6e,0x20,
+    0x3d,0x20,0x30,0x29,0x20,0x6f,0x75,0x74,0x20,0x76,0x65,0x63,0x34,0x20,0x63,0x6f,
+    0x6c,0x6f,0x72,0x3b,0x0a,0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,
+    0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x31,0x29,0x20,0x69,0x6e,0x20,0x76,0x65,0x63,
+    0x34,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x30,0x3b,0x0a,0x0a,0x76,0x6f,0x69,0x64,0x20,
+    0x6d,0x61,0x69,0x6e,0x28,0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x67,0x6c,0x5f,
+    0x50,0x6f,0x73,0x69,0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x70,0x6f,0x73,0x69,0x74,
+    0x69,0x6f,0x6e,0x3b,0x0a,0x20,0x20,0x20,0x20,0x67,0x6c,0x5f,0x50,0x6f,0x73,0x69,
+    0x74,0x69,0x6f,0x6e,0x2e,0x78,0x20,0x2a,0x3d,0x20,0x76,0x73,0x5f,0x70,0x61,0x72,
+    0x61,0x6d,0x73,0x5b,0x30,0x5d,0x2e,0x78,0x3b,0x0a,0x20,0x20,0x20,0x20,0x63,0x6f,
+    0x6c,0x6f,0x72,0x20,0x3d,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x30,0x3b,0x0a,0x7d,0x0a,
+    0x0a,0x00,
+};
+//
+//    #version 410
+//
+//    uniform vec4 fs_params[1];
+//    layout(location = 0) out vec4 frag_color;
+//    layout(location = 0) in vec4 color;
+//
+//    void main()
+//    {
+//        frag_color = color * fs_params[0].x;
+//    }
+//
+//
+const fs_source_glsl410 = [179]u8 {
+    0x23,0x76,0x65,0x72,0x73,0x69,0x6f,0x6e,0x20,0x34,0x31,0x30,0x0a,0x0a,0x75,0x6e,
+    0x69,0x66,0x6f,0x72,0x6d,0x20,0x76,0x65,0x63,0x34,0x20,0x66,0x73,0x5f,0x70,0x61,
+    0x72,0x61,0x6d,0x73,0x5b,0x31,0x5d,0x3b,0x0a,0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,
+    0x6c,0x6f,0x63,0x61,0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x30,0x29,0x20,0x6f,0x75,
+    0x74,0x20,0x76,0x65,0x63,0x34,0x20,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,
+    0x72,0x3b,0x0a,0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,0x74,0x69,
+    0x6f,0x6e,0x20,0x3d,0x20,0x30,0x29,0x20,0x69,0x6e,0x20,0x76,0x65,0x63,0x34,0x20,
+    0x63,0x6f,0x6c,0x6f,0x72,0x3b,0x0a,0x0a,0x76,0x6f,0x69,0x64,0x20,0x6d,0x61,0x69,
+    0x6e,0x28,0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x66,0x72,0x61,0x67,0x5f,0x63,
+    0x6f,0x6c,0x6f,0x72,0x20,0x3d,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x20,0x2a,0x20,0x66,
+    0x73,0x5f,0x70,0x61,0x72,0x61,0x6d,0x73,0x5b,0x30,0x5d,0x2e,0x78,0x3b,0x0a,0x7d,
+    0x0a,0x0a,0x00,
+};
+//
+//    #version 300 es
+//
+//    uniform vec4 vs_params[1];
+//    layout(location = 0) in vec4 position;
+//    out vec4 color;
+//    layout(location = 1) in vec4 color0;
+//
+//    void main()
+//    {
+//        gl_Position = position;
+//        gl_Position.x *= vs_params[0].x;
+//        color = color0;
+//    }
+//
+//
+const vs_source_glsl300es = [240]u8 {
+    0x23,0x76,0x65,0x72,0x73,0x69,0x6f,0x6e,0x20,0x33,0x30,0x30,0x20,0x65,0x73,0x0a,
+    0x0a,0x75,0x6e,0x69,0x66,0x6f,0x72,0x6d,0x20,0x76,0x65,0x63,0x34,0x20,0x76,0x73,
+    0x5f,0x70,0x61,0x72,0x61,0x6d,0x73,0x5b,0x31,0x5d,0x3b,0x0a,0x6c,0x61,0x79,0x6f,
+    0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x30,0x29,
+    0x20,0x69,0x6e,0x20,0x76,0x65,0x63,0x34,0x20,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,
+    0x6e,0x3b,0x0a,0x6f,0x75,0x74,0x20,0x76,0x65,0x63,0x34,0x20,0x63,0x6f,0x6c,0x6f,
+    0x72,0x3b,0x0a,0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,0x74,0x69,
+    0x6f,0x6e,0x20,0x3d,0x20,0x31,0x29,0x20,0x69,0x6e,0x20,0x76,0x65,0x63,0x34,0x20,
+    0x63,0x6f,0x6c,0x6f,0x72,0x30,0x3b,0x0a,0x0a,0x76,0x6f,0x69,0x64,0x20,0x6d,0x61,
+    0x69,0x6e,0x28,0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x67,0x6c,0x5f,0x50,0x6f,
+    0x73,0x69,0x74,0x69,0x6f,0x6e,0x20,0x3d,0x20,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,
+    0x6e,0x3b,0x0a,0x20,0x20,0x20,0x20,0x67,0x6c,0x5f,0x50,0x6f,0x73,0x69,0x74,0x69,
+    0x6f,0x6e,0x2e,0x78,0x20,0x2a,0x3d,0x20,0x76,0x73,0x5f,0x70,0x61,0x72,0x61,0x6d,
+    0x73,0x5b,0x30,0x5d,0x2e,0x78,0x3b,0x0a,0x20,0x20,0x20,0x20,0x63,0x6f,0x6c,0x6f,
+    0x72,0x20,0x3d,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x30,0x3b,0x0a,0x7d,0x0a,0x0a,0x00,
+
+};
+//
+//    #version 300 es
+//    precision mediump float;
+//    precision highp int;
+//
+//    uniform highp vec4 fs_params[1];
+//    layout(location = 0) out highp vec4 frag_color;
+//    in highp vec4 color;
+//
+//    void main()
+//    {
+//        frag_color = color * fs_params[0].x;
+//    }
+//
+//
+const fs_source_glsl300es = [225]u8 {
+    0x23,0x76,0x65,0x72,0x73,0x69,0x6f,0x6e,0x20,0x33,0x30,0x30,0x20,0x65,0x73,0x0a,
+    0x70,0x72,0x65,0x63,0x69,0x73,0x69,0x6f,0x6e,0x20,0x6d,0x65,0x64,0x69,0x75,0x6d,
+    0x70,0x20,0x66,0x6c,0x6f,0x61,0x74,0x3b,0x0a,0x70,0x72,0x65,0x63,0x69,0x73,0x69,
+    0x6f,0x6e,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x69,0x6e,0x74,0x3b,0x0a,0x0a,0x75,
+    0x6e,0x69,0x66,0x6f,0x72,0x6d,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x76,0x65,0x63,
+    0x34,0x20,0x66,0x73,0x5f,0x70,0x61,0x72,0x61,0x6d,0x73,0x5b,0x31,0x5d,0x3b,0x0a,
+    0x6c,0x61,0x79,0x6f,0x75,0x74,0x28,0x6c,0x6f,0x63,0x61,0x74,0x69,0x6f,0x6e,0x20,
+    0x3d,0x20,0x30,0x29,0x20,0x6f,0x75,0x74,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x76,
+    0x65,0x63,0x34,0x20,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x3b,0x0a,
+    0x69,0x6e,0x20,0x68,0x69,0x67,0x68,0x70,0x20,0x76,0x65,0x63,0x34,0x20,0x63,0x6f,
+    0x6c,0x6f,0x72,0x3b,0x0a,0x0a,0x76,0x6f,0x69,0x64,0x20,0x6d,0x61,0x69,0x6e,0x28,
+    0x29,0x0a,0x7b,0x0a,0x20,0x20,0x20,0x20,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,
+    0x6f,0x72,0x20,0x3d,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x20,0x2a,0x20,0x66,0x73,0x5f,
+    0x70,0x61,0x72,0x61,0x6d,0x73,0x5b,0x30,0x5d,0x2e,0x78,0x3b,0x0a,0x7d,0x0a,0x0a,
+    0x00,
+};
+//
+//    cbuffer vs_params : register(b0)
+//    {
+//        float _23_aspectRatio : packoffset(c0);
+//    };
+//
+//
+//    static float4 gl_Position;
+//    static float4 position;
+//    static float4 color;
+//    static float4 color0;
+//
+//    struct SPIRV_Cross_Input
+//    {
+//        float4 position : TEXCOORD0;
+//        float4 color0 : TEXCOORD1;
+//    };
+//
+//    struct SPIRV_Cross_Output
+//    {
+//        float4 color : TEXCOORD0;
+//        float4 gl_Position : SV_Position;
+//    };
+//
+//    void vert_main()
+//    {
+//        gl_Position = position;
+//        gl_Position.x *= _23_aspectRatio;
+//        color = color0;
+//    }
+//
+//    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
+//    {
+//        position = stage_input.position;
+//        color0 = stage_input.color0;
+//        vert_main();
+//        SPIRV_Cross_Output stage_output;
+//        stage_output.gl_Position = gl_Position;
+//        stage_output.color = color;
+//        return stage_output;
+//    }
+//
+const vs_source_hlsl5 = [767]u8 {
+    0x63,0x62,0x75,0x66,0x66,0x65,0x72,0x20,0x76,0x73,0x5f,0x70,0x61,0x72,0x61,0x6d,
+    0x73,0x20,0x3a,0x20,0x72,0x65,0x67,0x69,0x73,0x74,0x65,0x72,0x28,0x62,0x30,0x29,
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+};
+//
+//    cbuffer fs_params : register(b0)
+//    {
+//        float3 _16_offset : packoffset(c0);
+//    };
+//
+//
+//    static float4 frag_color;
+//    static float4 color;
+//
+//    struct SPIRV_Cross_Input
+//    {
+//        float4 color : TEXCOORD0;
+//    };
+//
+//    struct SPIRV_Cross_Output
+//    {
+//        float4 frag_color : SV_Target0;
+//    };
+//
+//    void frag_main()
+//    {
+//        frag_color = color * _16_offset.x;
+//    }
+//
+//    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
+//    {
+//        color = stage_input.color;
+//        frag_main();
+//        SPIRV_Cross_Output stage_output;
+//        stage_output.frag_color = frag_color;
+//        return stage_output;
+//    }
+//
+const fs_source_hlsl5 = [530]u8 {
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+    0x0a,0x00,
+};
+//
+//    #include <metal_stdlib>
+//    #include <simd/simd.h>
+//
+//    using namespace metal;
+//
+//    struct vs_params
+//    {
+//        float aspectRatio;
+//    };
+//
+//    struct main0_out
+//    {
+//        float4 color [[user(locn0)]];
+//        float4 gl_Position [[position]];
+//    };
+//
+//    struct main0_in
+//    {
+//        float4 position [[attribute(0)]];
+//        float4 color0 [[attribute(1)]];
+//    };
+//
+//    vertex main0_out main0(main0_in in [[stage_in]], constant vs_params& _23 [[buffer(0)]])
+//    {
+//        main0_out out = {};
+//        out.gl_Position = in.position;
+//        out.gl_Position.x *= _23.aspectRatio;
+//        out.color = in.color0;
+//        return out;
+//    }
+//
+//
+const vs_source_metal_macos = [546]u8 {
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+    0x0a,0x00,
+};
+//
+//    #include <metal_stdlib>
+//    #include <simd/simd.h>
+//
+//    using namespace metal;
+//
+//    struct fs_params
+//    {
+//        float3 offset;
+//    };
+//
+//    struct main0_out
+//    {
+//        float4 frag_color [[color(0)]];
+//    };
+//
+//    struct main0_in
+//    {
+//        float4 color [[user(locn0)]];
+//    };
+//
+//    fragment main0_out main0(main0_in in [[stage_in]], constant fs_params& _16 [[buffer(0)]])
+//    {
+//        main0_out out = {};
+//        out.frag_color = in.color * _16.offset.x;
+//        return out;
+//    }
+//
+//
+const fs_source_metal_macos = [411]u8 {
+    0x23,0x69,0x6e,0x63,0x6c,0x75,0x64,0x65,0x20,0x3c,0x6d,0x65,0x74,0x61,0x6c,0x5f,
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+    0x20,0x3c,0x73,0x69,0x6d,0x64,0x2f,0x73,0x69,0x6d,0x64,0x2e,0x68,0x3e,0x0a,0x0a,
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+    0x6e,0x20,0x6f,0x75,0x74,0x3b,0x0a,0x7d,0x0a,0x0a,0x00,
+};
+//
+//    diagnostic(off, derivative_uniformity);
+//
+//    struct vs_params {
+//      /_ @offset(0) _/
+//      aspectRatio : f32,
+//    }
+//
+//    var<private> position_1 : vec4f;
+//
+//    @group(0) @binding(0) var<uniform> x_23 : vs_params;
+//
+//    var<private> color : vec4f;
+//
+//    var<private> color0 : vec4f;
+//
+//    var<private> gl_Position : vec4f;
+//
+//    fn main_1() {
+//      let x_18 : vec4f = position_1;
+//      gl_Position = x_18;
+//      let x_26 : f32 = x_23.aspectRatio;
+//      let x_30 : f32 = gl_Position.x;
+//      gl_Position.x = (x_30 * x_26);
+//      let x_35 : vec4f = color0;
+//      color = x_35;
+//      return;
+//    }
+//
+//    struct main_out {
+//      @builtin(position)
+//      gl_Position : vec4f,
+//      @location(0)
+//      color_1 : vec4f,
+//    }
+//
+//    @vertex
+//    fn main(@location(0) position_1_param : vec4f, @location(1) color0_param : vec4f) -> main_out {
+//      position_1 = position_1_param;
+//      color0 = color0_param;
+//      main_1();
+//      return main_out(gl_Position, color);
+//    }
+//
+//
+const vs_source_wgsl = [832]u8 {
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+
+};
+//
+//    diagnostic(off, derivative_uniformity);
+//
+//    struct fs_params {
+//      /_ @offset(0) _/
+//      offset : vec3f,
+//    }
+//
+//    var<private> frag_color : vec4f;
+//
+//    var<private> color : vec4f;
+//
+//    @group(0) @binding(4) var<uniform> x_16 : fs_params;
+//
+//    fn main_1() {
+//      let x_12 : vec4f = color;
+//      let x_23 : f32 = x_16.offset.x;
+//      frag_color = (x_12 * x_23);
+//      return;
+//    }
+//
+//    struct main_out {
+//      @location(0)
+//      frag_color_1 : vec4f,
+//    }
+//
+//    @fragment
+//    fn main(@location(0) color_param : vec4f) -> main_out {
+//      color = color_param;
+//      main_1();
+//      return main_out(frag_color);
+//    }
+//
+//
+const fs_source_wgsl = [532]u8 {
+    0x64,0x69,0x61,0x67,0x6e,0x6f,0x73,0x74,0x69,0x63,0x28,0x6f,0x66,0x66,0x2c,0x20,
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+    0x63,0x6f,0x6c,0x6f,0x72,0x20,0x3d,0x20,0x63,0x6f,0x6c,0x6f,0x72,0x5f,0x70,0x61,
+    0x72,0x61,0x6d,0x3b,0x0a,0x20,0x20,0x6d,0x61,0x69,0x6e,0x5f,0x31,0x28,0x29,0x3b,
+    0x0a,0x20,0x20,0x72,0x65,0x74,0x75,0x72,0x6e,0x20,0x6d,0x61,0x69,0x6e,0x5f,0x6f,
+    0x75,0x74,0x28,0x66,0x72,0x61,0x67,0x5f,0x63,0x6f,0x6c,0x6f,0x72,0x29,0x3b,0x0a,
+    0x7d,0x0a,0x0a,0x00,
+};
+pub fn triangleShaderDesc(backend: sg.Backend) sg.ShaderDesc {
+    var desc: sg.ShaderDesc = .{};
+    desc.label = "triangle_shader";
+    switch (backend) {
+        .GLCORE => {
+            desc.attrs[0].name = "position";
+            desc.attrs[1].name = "color0";
+            desc.vs.source = &vs_source_glsl410;
+            desc.vs.entry = "main";
+            desc.vs.uniform_blocks[0].size = 16;
+            desc.vs.uniform_blocks[0].layout = .STD140;
+            desc.vs.uniform_blocks[0].uniforms[0].name = "vs_params";
+            desc.vs.uniform_blocks[0].uniforms[0].type = .FLOAT4;
+            desc.vs.uniform_blocks[0].uniforms[0].array_count = 1;
+            desc.fs.source = &fs_source_glsl410;
+            desc.fs.entry = "main";
+            desc.fs.uniform_blocks[0].size = 16;
+            desc.fs.uniform_blocks[0].layout = .STD140;
+            desc.fs.uniform_blocks[0].uniforms[0].name = "fs_params";
+            desc.fs.uniform_blocks[0].uniforms[0].type = .FLOAT4;
+            desc.fs.uniform_blocks[0].uniforms[0].array_count = 1;
+        },
+        .GLES3 => {
+            desc.attrs[0].name = "position";
+            desc.attrs[1].name = "color0";
+            desc.vs.source = &vs_source_glsl300es;
+            desc.vs.entry = "main";
+            desc.vs.uniform_blocks[0].size = 16;
+            desc.vs.uniform_blocks[0].layout = .STD140;
+            desc.vs.uniform_blocks[0].uniforms[0].name = "vs_params";
+            desc.vs.uniform_blocks[0].uniforms[0].type = .FLOAT4;
+            desc.vs.uniform_blocks[0].uniforms[0].array_count = 1;
+            desc.fs.source = &fs_source_glsl300es;
+            desc.fs.entry = "main";
+            desc.fs.uniform_blocks[0].size = 16;
+            desc.fs.uniform_blocks[0].layout = .STD140;
+            desc.fs.uniform_blocks[0].uniforms[0].name = "fs_params";
+            desc.fs.uniform_blocks[0].uniforms[0].type = .FLOAT4;
+            desc.fs.uniform_blocks[0].uniforms[0].array_count = 1;
+        },
+        .D3D11 => {
+            desc.attrs[0].sem_name = "TEXCOORD";
+            desc.attrs[0].sem_index = 0;
+            desc.attrs[1].sem_name = "TEXCOORD";
+            desc.attrs[1].sem_index = 1;
+            desc.vs.source = &vs_source_hlsl5;
+            desc.vs.d3d11_target = "vs_5_0";
+            desc.vs.entry = "main";
+            desc.vs.uniform_blocks[0].size = 16;
+            desc.vs.uniform_blocks[0].layout = .STD140;
+            desc.fs.source = &fs_source_hlsl5;
+            desc.fs.d3d11_target = "ps_5_0";
+            desc.fs.entry = "main";
+            desc.fs.uniform_blocks[0].size = 16;
+            desc.fs.uniform_blocks[0].layout = .STD140;
+        },
+        .METAL_MACOS => {
+            desc.vs.source = &vs_source_metal_macos;
+            desc.vs.entry = "main0";
+            desc.vs.uniform_blocks[0].size = 16;
+            desc.vs.uniform_blocks[0].layout = .STD140;
+            desc.fs.source = &fs_source_metal_macos;
+            desc.fs.entry = "main0";
+            desc.fs.uniform_blocks[0].size = 16;
+            desc.fs.uniform_blocks[0].layout = .STD140;
+        },
+        .WGPU => {
+            desc.vs.source = &vs_source_wgsl;
+            desc.vs.entry = "main";
+            desc.vs.uniform_blocks[0].size = 16;
+            desc.vs.uniform_blocks[0].layout = .STD140;
+            desc.fs.source = &fs_source_wgsl;
+            desc.fs.entry = "main";
+            desc.fs.uniform_blocks[0].size = 16;
+            desc.fs.uniform_blocks[0].layout = .STD140;
+        },
+        else => {},
+    }
+    return desc;
+}

todo.todo

@@ -0,0 +1,17 @@
+
+
+
+What are we doing here?:
+    ☐ using sokol in zig
+    ☐ part of a gamejam
+
+Today:
+    ☐ Guide through the code
+
+    Draw a circle!:
+        ✔ Draw indices instead of triangle elements @done(24-06-12 00:29)
+        ✔ Quad @done(24-06-12 00:40)
+        ✔ Create a circle vertices @done(24-06-12 01:28)
+        ✔ Draw the circle @done(24-06-12 01:28)
+        ☐ Make the cirlce not stretch
+        ☐ Make the circle move with uniforms