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spirv: Add SSBO read fallbacks when no aliasing is available

pull/15/merge
ReinUsesLisp 5 years ago
committed by ameerj
parent
fd913bceaf
commit
fde47152d9
1 changed files with 99 additions and 37 deletions
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  1. 136
      src/shader_recompiler/backend/spirv/emit_spirv_memory.cpp

136
src/shader_recompiler/backend/spirv/emit_spirv_memory.cpp
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@ -8,44 +8,62 @@
namespace Shader::Backend::SPIRV {
namespace {
Id StorageIndex(EmitContext& ctx, const IR::Value& offset, size_t element_size) {
Id StorageIndex(EmitContext& ctx, const IR::Value& offset, size_t element_size,
u32 index_offset = 0) {
if (offset.IsImmediate()) {
const u32 imm_offset{static_cast<u32>(offset.U32() / element_size)};
const u32 imm_offset{static_cast<u32>(offset.U32() / element_size) + index_offset};
return ctx.Const(imm_offset);
}
const u32 shift{static_cast<u32>(std::countr_zero(element_size))};
const Id index{ctx.Def(offset)};
if (shift == 0) {
return index;
Id index{ctx.Def(offset)};
if (shift != 0) {
const Id shift_id{ctx.Const(shift)};
index = ctx.OpShiftRightLogical(ctx.U32[1], index, shift_id);
}
const Id shift_id{ctx.Const(shift)};
return ctx.OpShiftRightLogical(ctx.U32[1], index, shift_id);
if (index_offset != 0) {
index = ctx.OpIAdd(ctx.U32[1], index, ctx.Const(index_offset));
}
return index;
}
Id StoragePointer(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr) {
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
if (!binding.IsImmediate()) {
throw NotImplementedException("Dynamic storage buffer indexing");
}
const Id ssbo{ctx.ssbos[binding.U32()].*member_ptr};
const Id index{StorageIndex(ctx, offset, element_size)};
const Id index{StorageIndex(ctx, offset, element_size, index_offset)};
return ctx.OpAccessChain(type_def.element, ssbo, ctx.u32_zero_value, index);
}
Id LoadStorage(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id result_type,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr) {
const Id pointer{StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr)};
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
const Id pointer{
StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr, index_offset)};
return ctx.OpLoad(result_type, pointer);
}
Id LoadStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
u32 index_offset = 0) {
return LoadStorage(ctx, binding, offset, ctx.U32[1], ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32, index_offset);
}
void WriteStorage(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id value,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr) {
const Id pointer{StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr)};
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
const Id pointer{
StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr, index_offset)};
ctx.OpStore(pointer, value);
}
void WriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id value,
u32 index_offset = 0) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32, index_offset);
}
} // Anonymous namespace
void EmitLoadGlobalU8(EmitContext&) {
@ -105,42 +123,73 @@ void EmitWriteGlobal128(EmitContext& ctx, Id address, Id value) {
}
Id EmitLoadStorageU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U8, ctx.storage_types.U8,
sizeof(u8), &StorageDefinitions::U8));
if (ctx.profile.support_descriptor_aliasing) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U8, ctx.storage_types.U8,
sizeof(u8), &StorageDefinitions::U8));
} else {
return ctx.OpBitFieldUExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset8(offset), ctx.Const(8u));
}
}
Id EmitLoadStorageS8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S8, ctx.storage_types.S8,
sizeof(s8), &StorageDefinitions::S8));
if (ctx.profile.support_descriptor_aliasing) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S8, ctx.storage_types.S8,
sizeof(s8), &StorageDefinitions::S8));
} else {
return ctx.OpBitFieldSExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset8(offset), ctx.Const(8u));
}
}
Id EmitLoadStorageU16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U16, ctx.storage_types.U16,
sizeof(u16), &StorageDefinitions::U16));
if (ctx.profile.support_descriptor_aliasing) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U16, ctx.storage_types.U16,
sizeof(u16), &StorageDefinitions::U16));
} else {
return ctx.OpBitFieldUExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset16(offset), ctx.Const(16u));
}
}
Id EmitLoadStorageS16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S16, ctx.storage_types.S16,
sizeof(s16), &StorageDefinitions::S16));
if (ctx.profile.support_descriptor_aliasing) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S16, ctx.storage_types.S16,
sizeof(s16), &StorageDefinitions::S16));
} else {
return ctx.OpBitFieldSExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset16(offset), ctx.Const(16u));
}
}
Id EmitLoadStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return LoadStorage(ctx, binding, offset, ctx.U32[1], ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32);
return LoadStorage32(ctx, binding, offset);
}
Id EmitLoadStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return LoadStorage(ctx, binding, offset, ctx.U32[2], ctx.storage_types.U32x2, sizeof(u32[2]),
&StorageDefinitions::U32x2);
if (ctx.profile.support_descriptor_aliasing) {
return LoadStorage(ctx, binding, offset, ctx.U32[2], ctx.storage_types.U32x2,
sizeof(u32[2]), &StorageDefinitions::U32x2);
} else {
return ctx.OpCompositeConstruct(ctx.U32[2], LoadStorage32(ctx, binding, offset, 0),
LoadStorage32(ctx, binding, offset, 1));
}
}
Id EmitLoadStorage128(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return LoadStorage(ctx, binding, offset, ctx.U32[4], ctx.storage_types.U32x4, sizeof(u32[4]),
&StorageDefinitions::U32x4);
if (ctx.profile.support_descriptor_aliasing) {
return LoadStorage(ctx, binding, offset, ctx.U32[4], ctx.storage_types.U32x4,
sizeof(u32[4]), &StorageDefinitions::U32x4);
} else {
return ctx.OpCompositeConstruct(ctx.U32[4], LoadStorage32(ctx, binding, offset, 0),
LoadStorage32(ctx, binding, offset, 1),
LoadStorage32(ctx, binding, offset, 2),
LoadStorage32(ctx, binding, offset, 3));
}
}
void EmitWriteStorageU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
@ -169,20 +218,33 @@ void EmitWriteStorageS16(EmitContext& ctx, const IR::Value& binding, const IR::V
void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32);
WriteStorage32(ctx, binding, offset, value);
}
void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x2, sizeof(u32[2]),
&StorageDefinitions::U32x2);
if (ctx.profile.support_descriptor_aliasing) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x2, sizeof(u32[2]),
&StorageDefinitions::U32x2);
} else {
for (u32 index = 0; index < 2; ++index) {
const Id element{ctx.OpCompositeExtract(ctx.U32[1], value, index)};
WriteStorage32(ctx, binding, offset, element, index);
}
}
}
void EmitWriteStorage128(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x4, sizeof(u32[4]),
&StorageDefinitions::U32x4);
if (ctx.profile.support_descriptor_aliasing) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x4, sizeof(u32[4]),
&StorageDefinitions::U32x4);
} else {
for (u32 index = 0; index < 4; ++index) {
const Id element{ctx.OpCompositeExtract(ctx.U32[1], value, index)};
WriteStorage32(ctx, binding, offset, element, index);
}
}
}
} // namespace Shader::Backend::SPIRV
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