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[D3D12] DXBC SV_IsFrontFace

This commit is contained in:
Triang3l 2018-09-02 17:14:11 +03:00
parent 5dcff19efc
commit 5798c9a45c
2 changed files with 32 additions and 2 deletions
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33
src/xenia/gpu/dxbc_shader_translator.cc
View File

@ -866,8 +866,9 @@ void DxbcShaderTranslator::WriteInputSignature() {
AppendString(shader_object_, "SV_VertexID");
} else {
assert_true(is_pixel_shader());
// Interpolators, point parameters (coordinates, size), screen position.
shader_object_.push_back(kInterpolatorCount + 2);
// Interpolators, point parameters (coordinates, size), screen position,
// is front face.
shader_object_.push_back(kInterpolatorCount + 3);
// Unknown.
shader_object_.push_back(8);
@ -906,6 +907,15 @@ void DxbcShaderTranslator::WriteInputSignature() {
shader_object_.push_back(kPSInPositionRegister);
shader_object_.push_back(0xF | (0x3 << 8));
// Is front face. Always used because ps_param_gen is handled dynamically.
shader_object_.push_back(0);
shader_object_.push_back(0);
// D3D_NAME_IS_FRONT_FACE.
shader_object_.push_back(9);
shader_object_.push_back(1);
shader_object_.push_back(kPSInFrontFaceRegister);
shader_object_.push_back(0x1 | (0x1 << 8));
// Write the semantic names.
new_offset = (uint32_t(shader_object_.size()) - chunk_position_dwords) *
sizeof(uint32_t);
@ -916,11 +926,17 @@ void DxbcShaderTranslator::WriteInputSignature() {
shader_object_[texcoord_name_position_dwords] = new_offset;
}
new_offset += AppendString(shader_object_, "TEXCOORD");
uint32_t position_name_position_dwords =
chunk_position_dwords + signature_position_dwords +
(kInterpolatorCount + 1) * signature_size_dwords;
shader_object_[position_name_position_dwords] = new_offset;
new_offset += AppendString(shader_object_, "SV_Position");
uint32_t front_face_name_position_dwords =
position_name_position_dwords + signature_size_dwords;
shader_object_[front_face_name_position_dwords] = new_offset;
new_offset += AppendString(shader_object_, "SV_IsFrontFace");
}
}
@ -1173,6 +1189,19 @@ void DxbcShaderTranslator::WriteShaderCode() {
shader_object_.push_back(kPSInPositionRegister);
shader_object_.push_back(ENCODE_D3D10_SB_NAME(D3D10_SB_NAME_POSITION));
++stat_.dcl_count;
// Is front face.
shader_object_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_DCL_INPUT_PS_SGV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(4) |
// This needs to be set according to FXC output, despite the description
// in d3d12TokenizedProgramFormat.hpp saying bits 11:23 are ignored.
ENCODE_D3D10_SB_INPUT_INTERPOLATION_MODE(
D3D10_SB_INTERPOLATION_CONSTANT));
shader_object_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_INPUT, 0b0001, 1));
shader_object_.push_back(kPSInFrontFaceRegister);
shader_object_.push_back(ENCODE_D3D10_SB_NAME(D3D10_SB_NAME_IS_FRONT_FACE));
++stat_.dcl_count;
// Color output.
for (uint32_t i = 0; i < 4; ++i) {
shader_object_.push_back(

1
src/xenia/gpu/dxbc_shader_translator.h
View File

@ -130,6 +130,7 @@ class DxbcShaderTranslator : public ShaderTranslator {
kPSInInterpolatorRegister + kInterpolatorCount;
static constexpr uint32_t kPSInPositionRegister =
kPSInPointParametersRegister + 1;
static constexpr uint32_t kPSInFrontFaceRegister = kPSInPositionRegister + 1;
static constexpr uint32_t kSwizzleXYZW = 0b11100100;
static constexpr uint32_t kSwizzleXXXX = 0b00000000;