Merge pull request #315 from dimforge/debug-renderer

Add a basic lines-based debug-renderer

1 files changed, 31 insertions, 0 deletions

diff --git a/src_testbed/lines/debuglines2d.wgsl b/src_testbed/lines/debuglines2d.wgsl
new file mode 100644
index 0000000..9316531
--- /dev/null
+++ b/src_testbed/lines/debuglines2d.wgsl
@@ -0,0 +1,31 @@
+#import bevy_sprite::mesh2d_view_bind_group
+[[group(0), binding(0)]]
+var<uniform> view: View;
+
+struct Vertex {
+    //[[location(0)]] color: vec4<f32>;
+    [[location(0)]] place: vec3<f32>;
+    [[location(1)]] color: u32;
+};
+
+struct VertexOutput {
+    [[builtin(position)]] clip_position: vec4<f32>;
+    [[location(0)]] color: vec4<f32>;
+};
+
+[[stage(vertex)]]
+fn vertex(vertex: Vertex) -> VertexOutput {
+    var out: VertexOutput;
+    out.clip_position = view.view_proj * vec4<f32>(vertex.place, 1.0);
+    // What is this craziness?
+    out.color = vec4<f32>((vec4<u32>(vertex.color) >> vec4<u32>(0u, 8u, 16u, 24u)) & vec4<u32>(255u)) / 255.0;
+    //out.color = vertex.color;
+    //out.color = vec4<f32>(1.0, 0.0, 0.0, 1.0);
+
+    return out;
+}
+
+[[stage(fragment)]]
+fn fragment(in: VertexOutput) -> [[location(0)]] vec4<f32> {
+    return in.color;
+}