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// hlsl-syntax.slang
// Test that we can ingest hlsl mesh output syntax
//TEST:CROSS_COMPILE:-target spirv -profile sm_6_5 -entry main -stage mesh
const static float2 positions[3] = {
float2(0.0, -0.5),
float2(0.5, 0.5),
float2(-0.5, 0.5)
};
const static float3 colors[3] = {
float3(1.0, 1.0, 0.0),
float3(0.0, 1.0, 1.0),
float3(1.0, 0.0, 1.0)
};
struct Vertex
{
float4 pos : SV_Position;
float3 color : Color;
};
const static uint MAX_VERTS = 3;
const static uint MAX_PRIMS = 1;
// Test that we can convert the HLSL Syntax to the typed syntax
void foo(uint tig, OutputVertices<Vertex, MAX_VERTS> verts)
{
if(tig < 3) {
verts[tig] = {float4(positions[tig], 0, 1), colors[tig]};
}
}
[outputtopology("triangle")]
[numthreads(3, 1, 1)]
void main(
in uint tig : SV_GroupIndex,
out vertices Vertex verts[MAX_VERTS],
out indices uint3 triangles[MAX_PRIMS]
)
{
const uint numVertices = 3;
const uint numPrimitives = 1;
SetMeshOutputCounts(numVertices, numPrimitives);
foo(tig, verts);
if(tig < numPrimitives) {
triangles[tig] = uint3(0,1,2);
}
}
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