Render colored quads

wgpu/src/shader/quad.frag

@@ -0,0 +1,9 @@
+#version 450
+
+layout(location = 0) in vec4 v_Color;
+
+layout(location = 0) out vec4 o_Color;
+
+void main() {
+    o_Color = v_Color;
+}

wgpu/src/shader/quad.vert

@@ -0,0 +1,24 @@
+#version 450
+
+layout(location = 0) in vec2 v_Pos;
+layout(location = 1) in vec2 i_Pos;
+layout(location = 2) in vec2 i_Scale;
+layout(location = 3) in vec4 i_Color;
+
+layout (set = 0, binding = 0) uniform Globals {
+    mat4 u_Transform;
+};
+
+layout(location = 0) out vec4 o_Color;
+
+void main() {
+    mat4 i_Transform = mat4(
+        vec4(i_Scale.x, 0.0, 0.0, 0.0),
+        vec4(0.0, i_Scale.y, 0.0, 0.0),
+        vec4(0.0, 0.0, 1.0, 0.0),
+        vec4(i_Pos, 0.0, 1.0)
+    );
+
+    o_Color = i_Color;
+    gl_Position = u_Transform * i_Transform * vec4(v_Pos, 0.0, 1.0);
+}