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emit_glsl_image: Use immediate offsets when possible

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This commit is contained in:
ameerj
2021-06-03 23:18:38 -04:00
parent 0a0b0a73d8
commit d12f2b8ccf
1 changed files with 33 additions and 12 deletions
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45
src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
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@@ -78,6 +78,28 @@ std::string ShadowSamplerVecCast(TextureType type) {
}
}
std::string GetOffsetVec(EmitContext& ctx, const IR::Value& offset) {
if (offset.IsImmediate()) {
return fmt::format("int({})", offset.U32());
}
IR::Inst* const inst{offset.InstRecursive()};
if (inst->AreAllArgsImmediates()) {
switch (inst->GetOpcode()) {
case IR::Opcode::CompositeConstructU32x2:
return fmt::format("ivec2({},{})", inst->Arg(0).U32(), inst->Arg(1).U32());
case IR::Opcode::CompositeConstructU32x3:
return fmt::format("ivec3({},{},{})", inst->Arg(0).U32(), inst->Arg(1).U32(),
inst->Arg(2).U32());
case IR::Opcode::CompositeConstructU32x4:
return fmt::format("ivec4({},{},{},{})", inst->Arg(0).U32(), inst->Arg(1).U32(),
inst->Arg(2).U32(), inst->Arg(3).U32());
default:
break;
}
}
return ctx.var_alloc.Consume(offset);
}
std::string PtpOffsets(const IR::Value& offset, const IR::Value& offset2) {
const std::array values{offset.InstRecursive(), offset2.InstRecursive()};
if (!values[0]->AreAllArgsImmediates() || !values[1]->AreAllArgsImmediates()) {
@@ -119,7 +141,7 @@ void EmitImageSampleImplicitLod([[maybe_unused]] EmitContext& ctx, [[maybe_unuse
const auto sparse_inst{PrepareSparse(inst)};
if (!sparse_inst) {
if (!offset.IsEmpty()) {
const auto offset_str{CastToIntVec(ctx.var_alloc.Consume(offset), info)};
const auto offset_str{GetOffsetVec(ctx, offset)};
if (ctx.stage == Stage::Fragment) {
ctx.Add("{}=textureOffset({},{},{}{});", texel, texture, coords, offset_str, bias);
} else {
@@ -137,8 +159,7 @@ void EmitImageSampleImplicitLod([[maybe_unused]] EmitContext& ctx, [[maybe_unuse
// TODO: Query sparseTexels extension support
if (!offset.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureOffsetARB({},{},{},{}{}));",
*sparse_inst, texture, coords, CastToIntVec(ctx.var_alloc.Consume(offset), info),
texel, bias);
*sparse_inst, texture, coords, GetOffsetVec(ctx, offset), texel, bias);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureARB({},{},{}{}));", *sparse_inst,
texture, coords, texel, bias);
@@ -163,7 +184,7 @@ void EmitImageSampleExplicitLod([[maybe_unused]] EmitContext& ctx, [[maybe_unuse
if (!sparse_inst) {
if (!offset.IsEmpty()) {
ctx.Add("{}=textureLodOffset({},{},{},{});", texel, texture, coords, lod_lc,
CastToIntVec(ctx.var_alloc.Consume(offset), info));
GetOffsetVec(ctx, offset));
} else {
ctx.Add("{}=textureLod({},{},{});", texel, texture, coords, lod_lc);
}
@@ -173,7 +194,7 @@ void EmitImageSampleExplicitLod([[maybe_unused]] EmitContext& ctx, [[maybe_unuse
if (!offset.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchOffsetARB({},{},int({}),{},{}));",
*sparse_inst, texture, CastToIntVec(coords, info), lod_lc,
CastToIntVec(ctx.var_alloc.Consume(offset), info), texel);
GetOffsetVec(ctx, offset), texel);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureLodARB({},{},{},{}));", *sparse_inst,
texture, coords, lod_lc, texel);
@@ -202,7 +223,7 @@ void EmitImageSampleDrefImplicitLod([[maybe_unused]] EmitContext& ctx,
const auto bias{info.has_bias ? fmt::format(",{}", bias_lc) : ""};
const auto cast{ShadowSamplerVecCast(info.type)};
if (!offset.IsEmpty()) {
const auto offset_str{CastToIntVec(ctx.var_alloc.Consume(offset), info)};
const auto offset_str{GetOffsetVec(ctx, offset)};
if (ctx.stage == Stage::Fragment) {
ctx.AddF32("{}=textureOffset({},{}({},{}),{}{});", inst, texture, cast, coords, dref,
offset_str, bias);
@@ -244,7 +265,7 @@ void EmitImageSampleDrefExplicitLod([[maybe_unused]] EmitContext& ctx,
const auto texture{Texture(ctx, info, index)};
const auto cast{ShadowSamplerVecCast(info.type)};
if (!offset.IsEmpty()) {
const auto offset_str{CastToIntVec(ctx.var_alloc.Consume(offset), info)};
const auto offset_str{GetOffsetVec(ctx, offset)};
if (info.type == TextureType::ColorArrayCube) {
ctx.AddF32("{}=textureLodOffset({},{},{},{},{});", inst, texture, coords, dref, lod_lc,
offset_str);
@@ -279,7 +300,7 @@ void EmitImageGather([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Ins
}
if (offset2.IsEmpty()) {
ctx.Add("{}=textureGatherOffset({},{},{},int({}));", texel, texture, coords,
CastToIntVec(ctx.var_alloc.Consume(offset), info), info.gather_component);
GetOffsetVec(ctx, offset), info.gather_component);
return;
}
// PTP
@@ -295,8 +316,8 @@ void EmitImageGather([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Ins
}
if (offset2.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureGatherOffsetARB({},{},{},{},int({})));",
*sparse_inst, texture, CastToIntVec(coords, info),
CastToIntVec(ctx.var_alloc.Consume(offset), info), texel, info.gather_component);
*sparse_inst, texture, CastToIntVec(coords, info), GetOffsetVec(ctx, offset),
texel, info.gather_component);
}
// PTP
const auto offsets{PtpOffsets(offset, offset2)};
@@ -322,7 +343,7 @@ void EmitImageGatherDref([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR:
}
if (offset2.IsEmpty()) {
ctx.Add("{}=textureGatherOffset({},{},{},{});", texel, texture, coords, dref,
CastToIntVec(ctx.var_alloc.Consume(offset), info));
GetOffsetVec(ctx, offset));
return;
}
// PTP
@@ -338,7 +359,7 @@ void EmitImageGatherDref([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR:
if (offset2.IsEmpty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTextureGatherOffsetARB({},{},{},,{},{}));",
*sparse_inst, texture, CastToIntVec(coords, info), dref,
CastToIntVec(ctx.var_alloc.Consume(offset), info), texel);
GetOffsetVec(ctx, offset), texel);
}
// PTP
const auto offsets{PtpOffsets(offset, offset2)};