diff options
| author | Philip Rebohle <philip.rebohle@tu-dortmund.de> | 2022-02-02 22:06:48 +0300 |
|---|---|---|
| committer | Philip Rebohle <philip.rebohle@tu-dortmund.de> | 2022-09-02 12:42:43 +0300 |
| commit | 73e216c5bcf2c33351d41d410a35b9f75dffc359 (patch) | |
| tree | 80970fbb4a0ab997cb01b1f048885325d6862577 /dxil_converter.cpp | |
| parent | 9eeb7f225ab3de6d7462ae4ff99997dbad925db8 (diff) | |
Emit primitive index array for mesh shaders.
Diffstat (limited to 'dxil_converter.cpp')
| -rw-r--r-- | dxil_converter.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/dxil_converter.cpp b/dxil_converter.cpp index acbee94..9d2eee1 100644 --- a/dxil_converter.cpp +++ b/dxil_converter.cpp @@ -3541,6 +3541,30 @@ bool Converter::Impl::emit_patch_variables() return true; } +bool Converter::Impl::emit_other_variables() +{ + auto &builder = spirv_module.get_builder(); + + if (execution_model == spv::ExecutionModelMeshEXT) + { + unsigned index_dim = execution_mode_meta.primitive_index_dimension; + + if (index_dim) + { + spv::Id type_id = builder.makeArrayType(get_type_id(DXIL::ComponentType::U32, 1, index_dim), + builder.makeUintConstant(execution_mode_meta.stage_output_num_primitive, false), 0); + primitive_index_array_id = create_variable(spv::StorageClassOutput, type_id, "indices"); + + spv::BuiltIn builtin_id = index_dim == 3 + ? spv::BuiltInPrimitiveTriangleIndicesEXT : spv::BuiltInPrimitiveLineIndicesEXT; + builder.addDecoration(primitive_index_array_id, spv::DecorationBuiltIn, builtin_id); + spirv_module.register_builtin_shader_output(primitive_index_array_id, builtin_id); + } + } + + return true; +} + static unsigned get_geometry_shader_stream_index(const llvm::MDNode *node) { if (node->getNumOperands() >= 11 && node->getOperand(10)) @@ -5247,6 +5271,7 @@ bool Converter::Impl::emit_execution_modes_mesh() unsigned max_vertex_count = get_constant_metadata(arguments, 1); unsigned max_primitive_count = get_constant_metadata(arguments, 2); auto topology = static_cast<DXIL::MeshOutputTopology>(get_constant_metadata(arguments, 3)); + unsigned index_count; builder.addExecutionMode(func, spv::ExecutionModeOutputVertices, max_vertex_count); builder.addExecutionMode(func, spv::ExecutionModeOutputPrimitivesEXT, max_primitive_count); @@ -5254,14 +5279,17 @@ bool Converter::Impl::emit_execution_modes_mesh() switch (topology) { case DXIL::MeshOutputTopology::Undefined: + index_count = 0; break; case DXIL::MeshOutputTopology::Line: builder.addExecutionMode(func, spv::ExecutionModeOutputLinesEXT); + index_count = 2; break; case DXIL::MeshOutputTopology::Triangle: builder.addExecutionMode(func, spv::ExecutionModeOutputTrianglesEXT); + index_count = 3; break; default: @@ -5271,6 +5299,7 @@ bool Converter::Impl::emit_execution_modes_mesh() execution_mode_meta.stage_output_num_vertex = max_vertex_count; execution_mode_meta.stage_output_num_primitive = max_primitive_count; + execution_mode_meta.primitive_index_dimension = index_count; auto *num_threads = llvm::cast<llvm::MDNode>(arguments->getOperand(0)); return emit_execution_modes_thread_wave_properties(num_threads); @@ -5726,6 +5755,8 @@ ConvertedFunction Converter::Impl::convert_entry_point() return result; if (!emit_patch_variables()) return result; + if (!emit_other_variables()) + return result; if (!emit_global_variables()) return result; |