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[dxvk] Rework binding ID patching

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This commit is contained in:
Philip Rebohle 2022-06-15 18:52:45 +02:00
parent 955e0cca62
commit d65ceb82cf
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GPG Key ID: C8CC613427A31C99
2 changed files with 63 additions and 9 deletions
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56
src/dxvk/dxvk_shader.cpp
View File

@ -100,15 +100,32 @@ namespace dxvk {
// Run an analysis pass over the SPIR-V code to gather some
// info that we may need during pipeline compilation.
std::vector<BindingOffsets> bindingOffsets;
std::vector<ConstOffsets> constIdOffsets;
std::vector<uint32_t> varIds;
SpirvCodeBuffer code = std::move(spirv);
uint32_t o1VarId = 0;
for (auto ins : code) {
if (ins.opCode() == spv::OpDecorate) {
if (ins.arg(2) == spv::DecorationBinding
|| ins.arg(2) == spv::DecorationSpecId)
m_idOffsets.push_back(ins.offset() + 3);
if (ins.arg(2) == spv::DecorationBinding) {
uint32_t varId = ins.arg(1);
bindingOffsets.resize(std::max(bindingOffsets.size(), size_t(varId + 1)));
bindingOffsets[varId].bindingId = ins.arg(3);
bindingOffsets[varId].bindingOffset = ins.offset() + 3;
varIds.push_back(varId);
}
if (ins.arg(2) == spv::DecorationDescriptorSet) {
uint32_t varId = ins.arg(1);
bindingOffsets.resize(std::max(bindingOffsets.size(), size_t(varId + 1)));
bindingOffsets[varId].setOffset = ins.offset() + 3;
}
if (ins.arg(2) == spv::DecorationSpecId)
constIdOffsets.push_back({ ins.arg(3), ins.offset() + 3 });
if (ins.arg(2) == spv::DecorationLocation && ins.arg(3) == 1) {
m_o1LocOffset = ins.offset() + 3;
o1VarId = ins.arg(1);
@ -133,6 +150,25 @@ namespace dxvk {
if (ins.arg(1) == spv::CapabilityShaderViewportIndexLayerEXT)
m_flags.set(DxvkShaderFlag::ExportsViewportIndexLayerFromVertexStage);
}
// Ignore the actual shader code, there's nothing interesting for us in there.
if (ins.opCode() == spv::OpFunction)
break;
}
// Combine spec constant IDs with other binding info
for (auto varId : varIds) {
BindingOffsets info = bindingOffsets[varId];
for (const auto& specOfs : constIdOffsets) {
if (info.bindingId == specOfs.bindingId) {
info.constIdOffset = specOfs.constIdOffset;
break;
}
}
if (info.bindingOffset)
m_bindingOffsets.push_back(info);
}
}
@ -163,9 +199,15 @@ namespace dxvk {
uint32_t* code = spirvCode.data();
// Remap resource binding IDs
for (uint32_t ofs : m_idOffsets) {
if (code[ofs] < MaxNumResourceSlots)
code[ofs] = mapping.getBindingId(code[ofs]);
for (const auto& info : m_bindingOffsets) {
uint32_t mappedBinding = mapping.getBindingId(info.bindingId);
code[info.bindingOffset] = mappedBinding;
if (info.constIdOffset)
code[info.constIdOffset] = mappedBinding;
if (code[info.setOffset])
code[info.setOffset] = 0;
}
// For dual-source blending we need to re-map

16
src/dxvk/dxvk_shader.h
View File

@ -209,7 +209,19 @@ namespace dxvk {
}
private:
struct ConstOffsets {
uint32_t bindingId;
uint32_t constIdOffset;
};
struct BindingOffsets {
uint32_t bindingId;
uint32_t constIdOffset;
uint32_t bindingOffset;
uint32_t setOffset;
};
DxvkShaderCreateInfo m_info;
SpirvCompressedBuffer m_code;
@ -222,7 +234,7 @@ namespace dxvk {
std::vector<DxvkResourceSlot> m_slots;
std::vector<char> m_uniformData;
std::vector<size_t> m_idOffsets;
std::vector<BindingOffsets> m_bindingOffsets;
DxvkBindingLayout m_bindings;