From 697eacd095f6568e43285499bba433a4eafe65d3 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Sat, 29 May 2021 15:03:28 -0400
Subject: [PATCH] glsl: Implement TLD instruction
---
.../backend/glsl/emit_glsl_image.cpp | 56 ++++++++++++++++++-
1 file changed, 55 insertions(+), 1 deletion(-)
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
index d721b018b5..78e2d5baca 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
@@ -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,