implement texture mip levels

1 files changed, 22 insertions, 0 deletions

diff --git a/client/src/shaders/texture_copy.wgsl b/client/src/shaders/texture_copy.wgsl
new file mode 100644
index 0000000..ff58f87
--- /dev/null
+++ b/client/src/shaders/texture_copy.wgsl
@@ -0,0 +1,22 @@
+struct VertexOut {
+    @builtin(position) clip: vec4<f32>,
+    @location(0) texcoord: vec2<f32>,
+};
+
+@group(0) @binding(0) var texture: texture_2d<f32>;
+@group(0) @binding(1) var texture_sampler: sampler;
+
+@vertex
+fn vs_main(@builtin(vertex_index) vertex_index: u32) -> VertexOut {
+    let x = i32(vertex_index) / 2;
+    let y = i32(vertex_index) & 1;
+    return VertexOut(
+        vec4<f32>(f32(x) * 4.0 - 1.0, 1.0 - f32(y) * 4.0, 0.0, 1.0),
+        vec2<f32>(f32(x) * 2.0, f32(y) * 2.0)
+    );
+}
+
+@fragment
+fn fs_main(vertex: VertexOut) -> @location(0) vec4<f32> {
+    return textureSample(texture, texture_sampler, vertex.texcoord);
+}