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shader: Implement geometry shaders

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This commit is contained in:
ReinUsesLisp 2021-04-12 19:41:22 -03:00 • committed by ameerj
parent a6cef71cc0
commit f263760c5a
14 changed files with 277 additions and 91 deletions
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38
src/shader_recompiler/backend/spirv/emit_spirv.cpp
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@ -134,6 +134,44 @@ void DefineEntryPoint(const IR::Program& program, EmitContext& ctx, Id main) {
case Shader::Stage::VertexB:
execution_model = spv::ExecutionModel::Vertex;
break;
case Shader::Stage::Geometry:
execution_model = spv::ExecutionModel::Geometry;
ctx.AddCapability(spv::Capability::Geometry);
ctx.AddCapability(spv::Capability::GeometryStreams);
switch (ctx.profile.input_topology) {
case InputTopology::Points:
ctx.AddExecutionMode(main, spv::ExecutionMode::InputPoints);
break;
case InputTopology::Lines:
ctx.AddExecutionMode(main, spv::ExecutionMode::InputLines);
break;
case InputTopology::LinesAdjacency:
ctx.AddExecutionMode(main, spv::ExecutionMode::InputLinesAdjacency);
break;
case InputTopology::Triangles:
ctx.AddExecutionMode(main, spv::ExecutionMode::Triangles);
break;
case InputTopology::TrianglesAdjacency:
ctx.AddExecutionMode(main, spv::ExecutionMode::InputTrianglesAdjacency);
break;
}
switch (program.output_topology) {
case OutputTopology::PointList:
ctx.AddExecutionMode(main, spv::ExecutionMode::OutputPoints);
break;
case OutputTopology::LineStrip:
ctx.AddExecutionMode(main, spv::ExecutionMode::OutputLineStrip);
break;
case OutputTopology::TriangleStrip:
ctx.AddExecutionMode(main, spv::ExecutionMode::OutputTriangleStrip);
break;
}
if (program.info.stores_point_size) {
ctx.AddCapability(spv::Capability::GeometryPointSize);
}
ctx.AddExecutionMode(main, spv::ExecutionMode::OutputVertices, program.output_vertices);
ctx.AddExecutionMode(main, spv::ExecutionMode::Invocations, program.invocations);
break;
case Shader::Stage::Fragment:
execution_model = spv::ExecutionModel::Fragment;
ctx.AddExecutionMode(main, spv::ExecutionMode::OriginUpperLeft);