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//TEST:SIMPLE(filecheck=VERT): -target wgsl -stage vertex -entry vertexMain
//TEST:SIMPLE(filecheck=FRAG): -target wgsl -stage fragment -entry fragmentMain
// Tests three aspects:
// 1. Flatten the nested struct for the return type of the entry-point
// 2. For fragment shader, SV_TARGET index must be emitted as @location(index)
// 3. For non-fragment shader, the user defined semantics should be emitted as @location(index)
struct FragmentOutput
{
//FRAG: @location(1) color1
float4 color1 : SV_TARGET1;
//FRAG: @location(0) color0
float4 color0 : SV_TARGET0;
};
struct NestedVertexOutput
{
float4 color : COLOR0;
};
struct VertexOutput
{
//VERT: @location(0) uv
//FRAG-DAG: @location(0) uv
float2 uv : TEXCOORD0;
//VERT: @location(1) color
//FRAG-DAG: @location(1) color
NestedVertexOutput nested;
//VERT: @builtin(position) position
//FRAG-DAG: @builtin(position) position
float4 position : SV_Position;
};
VertexOutput vertexMain()
{
VertexOutput out;
out.position = float4(1.0, 1.0, 1.0, 1.0);
out.uv = float2(0.5, 0.5);
out.nested.color = float4(0.0, 0.0, 0.0, 0.0);
return out;
}
//FRAG-DAG: @location(3) color3
//FRAG-DAG: @location(6) color6
FragmentOutput fragmentMain(VertexOutput input, float4 color3: COLOR3, float4 color6: COLOR6)
{
FragmentOutput out;
out.color0 = input.nested.color + color3;
out.color1 = input.nested.color + color6;
return out;
}
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