feat: render-to-texture

src/blit.wgsl

@@ -0,0 +1,27 @@
+struct BlitVertexInput {
+    @location(0) position: vec3<f32>,
+    @location(1) uv_coords: vec2<f32>,
+}
+
+struct BlitVertexOutput {
+    @builtin(position) position: vec4<f32>,
+    @location(0) uv_coords: vec2<f32>,
+}
+
+@group(0) @binding(0)
+var blit_texture: texture_2d<f32>;
+@group(0)@binding(1)
+var blit_sampler: sampler;
+
+@vertex
+fn blit_vs_main(model: BlitVertexInput) -> BlitVertexOutput {
+    var out: BlitVertexOutput;
+    out.position = vec4<f32>(model.position, 1.0);
+    out.uv_coords = model.uv_coords;
+    return out;
+}
+
+@fragment
+fn blit_fs_main(in: BlitVertexOutput) -> @location(0) vec4<f32> {
+    return textureSample(blit_texture, blit_sampler, in.uv_coords);
+}