1 files changed, 43 insertions, 0 deletions
diff --git a/wgpu/src/shader/blit.wgsl b/wgpu/src/shader/blit.wgsl
new file mode 100644
index 00000000..7a987c2c
--- /dev/null
+++ b/wgpu/src/shader/blit.wgsl
@@ -0,0 +1,43 @@
+var positions: array<vec2<f32>, 6> = array<vec2<f32>, 6>(
+    vec2<f32>(-1.0, 1.0),
+    vec2<f32>(-1.0, -1.0),
+    vec2<f32>(1.0, -1.0),
+    vec2<f32>(-1.0, 1.0),
+    vec2<f32>(1.0, 1.0),
+    vec2<f32>(1.0, -1.0)
+);
+
+var uvs: array<vec2<f32>, 6> = array<vec2<f32>, 6>(
+    vec2<f32>(0.0, 0.0),
+    vec2<f32>(0.0, 1.0),
+    vec2<f32>(1.0, 1.0),
+    vec2<f32>(0.0, 0.0),
+    vec2<f32>(1.0, 0.0),
+    vec2<f32>(1.0, 1.0)
+);
+
+[[group(0), binding(0)]] var u_sampler: sampler;
+[[group(1), binding(0)]] var u_texture: texture_2d<f32>;
+
+struct VertexInput {
+    [[builtin(vertex_index)]] vertex_index: u32;
+};
+
+struct VertexOutput {
+    [[builtin(position)]] position: vec4<f32>;
+    [[location(0)]] uv: vec2<f32>;
+};
+
+[[stage(vertex)]]
+fn vs_main(input: VertexInput) -> VertexOutput {
+    var out: VertexOutput;
+    out.uv = uvs[input.vertex_index];
+    out.position = vec4<f32>(positions[input.vertex_index], 0.0, 1.0);
+
+    return out;
+}
+
+[[stage(fragment)]]
+fn fs_main(input: VertexOutput) -> [[location(0)]] vec4<f32> {
+    return textureSample(u_texture, u_sampler, input.uv);
+}
+\ No newline at end of file