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glsl: Implement TLD instruction

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This commit is contained in:
ameerj 2021-05-29 15:03:28 -04:00
parent e4ba755705
commit 697eacd095
1 changed files with 55 additions and 1 deletions
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56
src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
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@ -38,6 +38,24 @@ std::string CastToIntVec(std::string_view value, const IR::TextureInstInfo& info
}
}
std::string TexelFetchCastToInt(std::string_view value, const IR::TextureInstInfo& info) {
switch (info.type) {
case TextureType::Color1D:
return fmt::format("int({})", value);
case TextureType::ColorArray1D:
case TextureType::Color2D:
return fmt::format("ivec2({})", value);
case TextureType::ColorArray2D:
case TextureType::Color3D:
case TextureType::ColorCube:
return fmt::format("ivec3({})", value);
case TextureType::ColorArrayCube:
return fmt::format("ivec4({})", value);
default:
throw NotImplementedException("Offset type {}", info.type.Value());
}
}
std::string ShadowSamplerVecCast(TextureType type) {
switch (type) {
case TextureType::ColorArray2D:
@ -138,6 +156,10 @@ void EmitImageSampleDrefImplicitLod([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] std::string_view bias_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{PrepareSparse(inst)};
if (sparse_inst) {
throw NotImplementedException("Sparse texture samples");
}
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
@ -165,6 +187,10 @@ void EmitImageSampleDrefExplicitLod([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] std::string_view lod_lc,
[[maybe_unused]] const IR::Value& offset) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const auto sparse_inst{PrepareSparse(inst)};
if (sparse_inst) {
throw NotImplementedException("Sparse texture samples");
}
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
@ -204,7 +230,35 @@ void EmitImageFetch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst
[[maybe_unused]] std::string_view coords,
[[maybe_unused]] std::string_view offset, [[maybe_unused]] std::string_view lod,
[[maybe_unused]] std::string_view ms) {
throw NotImplementedException("GLSL Instruction");
const auto info{inst.Flags<IR::TextureInstInfo>()};
if (info.has_bias) {
throw NotImplementedException("Bias texture samples");
}
if (info.has_lod_clamp) {
throw NotImplementedException("Lod clamp samples");
}
const auto texture{Texture(ctx, info, index)};
const auto sparse_inst{PrepareSparse(inst)};
const auto texel{ctx.reg_alloc.Define(inst, Type::F32x4)};
if (!sparse_inst) {
if (!offset.empty()) {
ctx.Add("{}=texelFetchOffset({},{},int({}),{});", texel, texture,
TexelFetchCastToInt(coords, info), lod, TexelFetchCastToInt(offset, info));
} else {
ctx.Add("{}=texelFetch({},{},int({}));", texel, texture,
TexelFetchCastToInt(coords, info), lod);
}
return;
}
// TODO: Query sparseTexels extension support
if (!offset.empty()) {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchOffsetARB({},{},int({}),{},{}));",
*sparse_inst, texture, CastToIntVec(coords, info), lod,
CastToIntVec(offset, info), texel);
} else {
ctx.AddU1("{}=sparseTexelsResidentARB(sparseTexelFetchARB({},{},{},{}));", *sparse_inst,
texture, CastToIntVec(coords, info), lod, texel);
}
}
void EmitImageQueryDimensions([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,