[D3D12] DXBC input signature
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@ -9,6 +9,7 @@
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#include "xenia/gpu/dxbc_shader_translator.h"
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#include "xenia/gpu/dxbc_shader_translator.h"
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#include <algorithm>
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#include <cstring>
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#include <cstring>
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#include "third_party/dxbc/DXBCChecksum.h"
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#include "third_party/dxbc/DXBCChecksum.h"
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@ -63,6 +64,16 @@ std::vector<uint8_t> DxbcShaderTranslator::CompleteTranslation() {
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(uint32_t(shader_object_.size()) - chunk_position_dwords - 2) *
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(uint32_t(shader_object_.size()) - chunk_position_dwords - 2) *
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sizeof(uint32_t);
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sizeof(uint32_t);
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// Write Input SiGNature.
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chunk_position_dwords = uint32_t(shader_object_.size());
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shader_object_[91] = chunk_position_dwords * sizeof(uint32_t);
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shader_object_.push_back('NGSI');
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shader_object_.push_back(0);
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WriteInputSignature();
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shader_object_[chunk_position_dwords + 1] =
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(uint32_t(shader_object_.size()) - chunk_position_dwords - 2) *
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sizeof(uint32_t);
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// Fill the remaining fields of the header and copy bytes out.
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// Fill the remaining fields of the header and copy bytes out.
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uint32_t shader_object_size =
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uint32_t shader_object_size =
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uint32_t(shader_object_.size() * sizeof(uint32_t));
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uint32_t(shader_object_.size() * sizeof(uint32_t));
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@ -361,5 +372,93 @@ void DxbcShaderTranslator::WriteResourceDefinitions() {
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}
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}
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}
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}
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void DxbcShaderTranslator::WriteInputSignature() {
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uint32_t chunk_position_dwords = uint32_t(shader_object_.size());
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uint32_t new_offset;
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const uint32_t signature_position_dwords = 2;
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const uint32_t signature_size_dwords = 6;
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if (is_vertex_shader()) {
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// Only unswapped vertex index.
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shader_object_.push_back(1);
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// Unknown.
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shader_object_.push_back(8);
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// Vertex index.
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// Semantic name SV_VertexID (the only one in the signature).
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shader_object_.push_back(
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(signature_position_dwords + signature_size_dwords) * sizeof(uint32_t));
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// Semantic index.
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shader_object_.push_back(0);
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// D3D_NAME_VERTEX_ID.
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shader_object_.push_back(6);
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// D3D_REGISTER_COMPONENT_UINT32.
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shader_object_.push_back(1);
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shader_object_.push_back(kVSInVertexIndexRegister);
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// x present, x used (always written to GPR 0).
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shader_object_.push_back(0x1 | (0x1 << 8));
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// Vertex index semantic name.
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AppendString(shader_object_, "SV_VertexID");
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} else {
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assert_true(is_pixel_shader());
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// Interpolators, point parameters (coordinates, size), screen position.
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shader_object_.push_back(kInterpolatorCount + 2);
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// Unknown.
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shader_object_.push_back(8);
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// Intepolators.
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for (uint32_t i = 0; i < kInterpolatorCount; ++i) {
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// Reserve space for the semantic name (TEXCOORD).
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shader_object_.push_back(0);
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shader_object_.push_back(i);
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// D3D_NAME_UNDEFINED.
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shader_object_.push_back(0);
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// D3D_REGISTER_COMPONENT_FLOAT32.
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shader_object_.push_back(3);
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shader_object_.push_back(kPSInInterpolatorRegister + i);
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// Interpolators are copied to GPRs in the beginning of the shader. If
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// there's a register to copy to, this interpolator is used.
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shader_object_.push_back(0xF | (i < register_count() ? (0xF << 8) : 0));
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}
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// Point parameters - coordinate on the point and point size as a float3
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// TEXCOORD. Always used because ps_param_gen is handled dynamically.
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shader_object_.push_back(0);
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shader_object_.push_back(kPointParametersTexCoord);
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shader_object_.push_back(0);
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shader_object_.push_back(3);
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shader_object_.push_back(kPSInPointParametersRegister);
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shader_object_.push_back(0x7 | (0x7 << 8));
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// Position (only XY). Always used because ps_param_gen is handled
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// dynamically.
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shader_object_.push_back(0);
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shader_object_.push_back(0);
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// D3D_NAME_POSITION.
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shader_object_.push_back(1);
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shader_object_.push_back(3);
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shader_object_.push_back(kPSInPositionRegister);
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shader_object_.push_back(0xF | (0xF << 8));
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// Write the semantic names.
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new_offset = (uint32_t(shader_object_.size()) - chunk_position_dwords) *
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sizeof(uint32_t);
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for (uint32_t i = 0; i < kInterpolatorCount + 1; ++i) {
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uint32_t texcoord_name_position_dwords = chunk_position_dwords +
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signature_position_dwords +
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i * signature_size_dwords;
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shader_object_[texcoord_name_position_dwords] = new_offset;
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}
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new_offset += AppendString(shader_object_, "TEXCOORD");
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uint32_t position_name_position_dwords =
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chunk_position_dwords + signature_position_dwords +
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(kInterpolatorCount + 1) * signature_size_dwords;
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shader_object_[position_name_position_dwords] = new_offset;
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new_offset += AppendString(shader_object_, "POSITION");
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}
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}
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} // namespace gpu
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} // namespace gpu
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} // namespace xe
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} // namespace xe
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@ -76,10 +76,32 @@ class DxbcShaderTranslator : public ShaderTranslator {
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kFloatConstantsLast = kFloatConstantsFirst + kFloatConstantPageCount - 1,
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kFloatConstantsLast = kFloatConstantsFirst + kFloatConstantPageCount - 1,
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};
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};
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static constexpr uint32_t kInterpolatorCount = 16;
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static constexpr uint32_t kPointParametersTexCoord = kInterpolatorCount;
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// IF ANY OF THESE ARE CHANGED, WriteInputSignature and WriteOutputSignature
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// MUST BE UPDATED!
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static constexpr uint32_t kVSInVertexIndexRegister = 0;
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static constexpr uint32_t kVSOutInterpolatorRegister = 0;
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static constexpr uint32_t kVSOutPointParametersRegister =
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kVSOutInterpolatorRegister + kInterpolatorCount;
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static constexpr uint32_t kVSOutPositionRegister =
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kVSOutPointParametersRegister + 1;
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static constexpr uint32_t kPSInInterpolatorRegister = 0;
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static constexpr uint32_t kPSInPointParametersRegister =
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kPSInInterpolatorRegister + kInterpolatorCount;
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static constexpr uint32_t kPSInPositionRegister =
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kPSInPointParametersRegister + 1;
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static constexpr uint32_t kPSOutColorRegister = 0;
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static constexpr uint32_t kPSOutDepthRegister = kPSOutColorRegister + 4;
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// Appends a string to a DWORD stream, returns the DWORD-aligned length.
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// Appends a string to a DWORD stream, returns the DWORD-aligned length.
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static uint32_t AppendString(std::vector<uint32_t>& dest, const char* source);
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static uint32_t AppendString(std::vector<uint32_t>& dest, const char* source);
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void WriteResourceDefinitions();
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void WriteResourceDefinitions();
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void WriteInputSignature();
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// Executable instructions - generated during translation.
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// Executable instructions - generated during translation.
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std::vector<uint32_t> shader_code_;
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std::vector<uint32_t> shader_code_;
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