Uniform buffer

shaders/22_shader_ubo.slang

@@ -0,0 +1,29 @@
+struct VSInput {
+  float2 inPosition;
+  float3 inColor;
+};
+
+struct UniformBuffer {
+  float4x4 model;
+  float4x4 view;
+  float4x4 proj;
+};
+ConstantBuffer<UniformBuffer> ubo;
+
+struct VSOutput {
+  float4 pos : SV_Position;
+  float3 color;
+};
+
+[shader("vertex")]
+VSOutput vertMain(VSInput input) {
+  VSOutput output;
+  output.color = input.inColor;
+  output.pos   = mul(ubo.proj, mul(ubo.view, mul(ubo.model, float4(input.inPosition, 0.0, 1.0))));
+  return output;
+}
+
+[shader("fragment")]
+float4 fragMain(VSOutput vertIn) : SV_Target {
+  return float4(vertIn.color, 1.0);
+}