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recompiler: pack 4xf32 to 8_8_8_8 Unorm if buffer has such format

This commit is contained in:
psucien 2024-08-14 01:04:21 +02:00
parent ad3b6c793c
commit 3450135a3f
1 changed files with 43 additions and 9 deletions
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52
src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
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@ -425,21 +425,55 @@ Id EmitLoadBufferFormatF32x4(EmitContext& ctx, IR::Inst* inst, u32 handle, Id ad
return EmitLoadBufferFormatF32xN<4>(ctx, inst, handle, address);
}
template <u32 N>
static Id PackF32ToUnorm(EmitContext& ctx, Id value) {
Id result{};
for (u32 i = 0; i < N; i++) {
const Id comp =
ctx.OpConvertFToU(ctx.U32[1], ctx.OpFMul(ctx.F32[1], ctx.ConstF32(255.0f),
ctx.OpCompositeExtract(ctx.F32[1], value, i)));
if (i == 0) {
result = comp;
} else {
const Id comp_shifted = ctx.OpShiftLeftLogical(
ctx.U32[1], comp, ctx.OpIMul(ctx.U32[1], ctx.ConstU32(i), ctx.ConstU32(8u)));
result = ctx.OpBitwiseOr(ctx.U32[1], result, comp_shifted);
}
}
return result;
}
template <u32 N>
static void EmitStoreBufferF32xN(EmitContext& ctx, u32 handle, Id address, Id value) {
auto& buffer = ctx.buffers[handle];
address = ctx.OpIAdd(ctx.U32[1], address, buffer.offset);
const Id index = ctx.OpShiftRightLogical(ctx.U32[1], address, ctx.ConstU32(2u));
if constexpr (N == 1) {
const Id ptr{ctx.OpAccessChain(buffer.pointer_type, buffer.id, ctx.u32_zero_value, index)};
ctx.OpStore(ptr, value);
} else {
for (u32 i = 0; i < N; i++) {
const Id index_i = ctx.OpIAdd(ctx.U32[1], index, ctx.ConstU32(i));
const Id ptr =
ctx.OpAccessChain(buffer.pointer_type, buffer.id, ctx.u32_zero_value, index_i);
ctx.OpStore(ptr, ctx.OpCompositeExtract(ctx.F32[1], value, i));
switch (buffer.buffer.GetNumberFmt()) {
case AmdGpu::NumberFormat::Uint:
case AmdGpu::NumberFormat::Float: {
ASSERT(buffer.buffer.GetStride() == sizeof(float) * N);
if constexpr (N == 1) {
const Id ptr{
ctx.OpAccessChain(buffer.pointer_type, buffer.id, ctx.u32_zero_value, index)};
ctx.OpStore(ptr, value);
} else {
for (u32 i = 0; i < N; i++) {
const Id index_i = ctx.OpIAdd(ctx.U32[1], index, ctx.ConstU32(i));
const Id ptr =
ctx.OpAccessChain(buffer.pointer_type, buffer.id, ctx.u32_zero_value, index_i);
ctx.OpStore(ptr, ctx.OpCompositeExtract(ctx.F32[1], value, i));
}
}
break;
case AmdGpu::NumberFormat::Unorm: {
const Id ptr = ctx.OpAccessChain(buffer.pointer_type, buffer.id, ctx.u32_zero_value, index);
ctx.OpStore(ptr, ctx.OpBitcast(ctx.F32[1], PackF32ToUnorm<N>(ctx, value)));
break;
}
default: {
UNREACHABLE();
}
}
}
}