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[D3D12] DXBC size and checksum

This commit is contained in:
Triang3l 2018-08-27 16:18:21 +03:00
parent 945ced4996
commit 1dc98d9133
1 changed files with 12 additions and 5 deletions
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17
src/xenia/gpu/dxbc_shader_translator.cc
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@ -30,7 +30,7 @@ void DxbcShaderTranslator::Reset() {
std::vector<uint8_t> DxbcShaderTranslator::CompleteTranslation() {
shader_object_.clear();
// Shader object header.
// Write the shader object header.
shader_object_.push_back('CBXD');
// Reserve space for the checksum.
for (uint32_t i = 0; i < 4; ++i) {
@ -42,12 +42,19 @@ std::vector<uint8_t> DxbcShaderTranslator::CompleteTranslation() {
// 5 chunks - RDEF, ISGN, OSGN, SHEX, STAT.
shader_object_.push_back(5);
// Copy bytes out.
// TODO(Triang3l): avoid copy?
// Fill the remaining fields of the header and copy bytes out.
uint32_t shader_object_size =
uint32_t(shader_object_.size() * sizeof(uint32_t));
shader_object_[6] = shader_object_size;
// The checksum includes the size field, so it must be the last.
CalculateDXBCChecksum(reinterpret_cast<unsigned char*>(shader_object_.data()),
shader_object_size,
reinterpret_cast<unsigned int*>(&shader_object_[1]));
// TODO(Triang3l): Avoid copy?
std::vector<uint8_t> shader_object_bytes;
shader_object_bytes.resize(shader_object_.size() * sizeof(uint32_t));
shader_object_bytes.resize(shader_object_size);
std::memcpy(shader_object_bytes.data(), shader_object_.data(),
shader_object_bytes.size());
shader_object_size);
return shader_object_bytes;
}