10 files changed, 44 insertions, 2 deletions

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_image.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
index a97b143e4..e67e80fac 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_image.cpp
@@ -67,6 +67,7 @@ std::string_view TextureType(IR::TextureInstInfo info) {
         case TextureType::ColorArray1D:
             return "SHADOWARRAY1D";
         case TextureType::Color2D:
+        case TextureType::Color2DRect:
             return "SHADOW2D";
         case TextureType::ColorArray2D:
             return "SHADOWARRAY2D";
@@ -86,6 +87,7 @@ std::string_view TextureType(IR::TextureInstInfo info) {
         case TextureType::ColorArray1D:
             return "ARRAY1D";
         case TextureType::Color2D:
+        case TextureType::Color2DRect:
             return "2D";
         case TextureType::ColorArray2D:
             return "ARRAY2D";
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
index 6af7e3fe6..cecdbb9d6 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
@@ -466,6 +466,7 @@ void EmitImageQueryDimensions(EmitContext& ctx, IR::Inst& inst, const IR::Value&
     case TextureType::ColorArray1D:
     case TextureType::Color2D:
     case TextureType::ColorCube:
+    case TextureType::Color2DRect:
         return ctx.AddU32x4(
             "{}=uvec4(uvec2(textureSize({},int({}))),0u,uint(textureQueryLevels({})));", inst,
             texture, lod, texture);
diff --git a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
index 221b06328..c767a9dc3 100644
--- a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
+++ b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp
@@ -86,6 +86,7 @@ std::string_view SamplerType(TextureType type, bool is_depth) {
     case TextureType::ColorArray1D:
         return "sampler1DArray";
     case TextureType::Color2D:
+    case TextureType::Color2DRect:
         return "sampler2D";
     case TextureType::ColorArray2D:
         return "sampler2DArray";
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
index d8d86c91a..fb5799c42 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_image.cpp
@@ -453,6 +453,7 @@ Id EmitImageQueryDimensions(EmitContext& ctx, IR::Inst* inst, const IR::Value& i
     case TextureType::ColorArray1D:
     case TextureType::Color2D:
     case TextureType::ColorCube:
+    case TextureType::Color2DRect:
         return ctx.OpCompositeConstruct(ctx.U32[4], ctx.OpImageQuerySizeLod(ctx.U32[2], image, lod),
                                         zero, mips());
     case TextureType::ColorArray2D:
diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
index 98dd9035a..aecc4c612 100644
--- a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
@@ -41,6 +41,7 @@ Id ImageType(EmitContext& ctx, const TextureDescriptor& desc) {
     case TextureType::ColorArray1D:
         return ctx.TypeImage(type, spv::Dim::Dim1D, depth, true, false, 1, format);
     case TextureType::Color2D:
+    case TextureType::Color2DRect:
         return ctx.TypeImage(type, spv::Dim::Dim2D, depth, false, false, 1, format);
     case TextureType::ColorArray2D:
         return ctx.TypeImage(type, spv::Dim::Dim2D, depth, true, false, 1, format);
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index d2b658bca..11086ed8c 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -1832,6 +1832,11 @@ Value IREmitter::ImageQueryDimension(const Value& handle, const IR::U32& lod) {
     return Inst(op, handle, lod);
 }
 
+Value IREmitter::ImageQueryDimension(const Value& handle, const IR::U32& lod,
+                                     TextureInstInfo info) {
+    return Inst(Opcode::ImageQueryDimensions, Flags{info}, handle, lod);
+}
+
 Value IREmitter::ImageQueryLod(const Value& handle, const Value& coords, TextureInstInfo info) {
     const Opcode op{handle.IsImmediate() ? Opcode::BoundImageQueryLod
                                          : Opcode::BindlessImageQueryLod};
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index c29bda558..25839a371 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -315,6 +315,8 @@ public:
                                                  const F32& dref, const F32& lod,
                                                  const Value& offset, TextureInstInfo info);
     [[nodiscard]] Value ImageQueryDimension(const Value& handle, const IR::U32& lod);
+    [[nodiscard]] Value ImageQueryDimension(const Value& handle, const IR::U32& lod,
+                                            TextureInstInfo info);
 
     [[nodiscard]] Value ImageQueryLod(const Value& handle, const Value& coords,
                                       TextureInstInfo info);
diff --git a/src/shader_recompiler/ir_opt/rescaling_pass.cpp b/src/shader_recompiler/ir_opt/rescaling_pass.cpp
index 0d5f2e4d8..9198fa5f2 100644
--- a/src/shader_recompiler/ir_opt/rescaling_pass.cpp
+++ b/src/shader_recompiler/ir_opt/rescaling_pass.cpp
@@ -16,6 +16,7 @@ namespace {
     switch (type) {
     case TextureType::Color2D:
     case TextureType::ColorArray2D:
+    case TextureType::Color2DRect:
         return true;
     case TextureType::Color1D:
     case TextureType::ColorArray1D:
@@ -132,7 +133,8 @@ void PatchImageQueryDimensions(IR::Block& block, IR::Inst& inst) {
     const IR::U1 is_scaled{ir.IsTextureScaled(ir.Imm32(info.descriptor_index))};
     switch (info.type) {
     case TextureType::Color2D:
-    case TextureType::ColorArray2D: {
+    case TextureType::ColorArray2D:
+    case TextureType::Color2DRect: {
         const IR::Value new_inst{&*block.PrependNewInst(it, inst)};
         const IR::U32 width{DownScale(ir, is_scaled, IR::U32{ir.CompositeExtract(new_inst, 0)})};
         const IR::U32 height{DownScale(ir, is_scaled, IR::U32{ir.CompositeExtract(new_inst, 1)})};
@@ -163,6 +165,7 @@ void ScaleIntegerComposite(IR::IREmitter& ir, IR::Inst& inst, const IR::U1& is_s
     const IR::U32 y{Scale(ir, is_scaled, IR::U32{ir.CompositeExtract(composite, 1)})};
     switch (info.type) {
     case TextureType::Color2D:
+    case TextureType::Color2DRect:
         inst.SetArg(index, ir.CompositeConstruct(x, y));
         break;
     case TextureType::ColorArray2D: {
@@ -193,6 +196,7 @@ void ScaleIntegerOffsetComposite(IR::IREmitter& ir, IR::Inst& inst, const IR::U1
     switch (info.type) {
     case TextureType::ColorArray2D:
     case TextureType::Color2D:
+    case TextureType::Color2DRect:
         inst.SetArg(index, ir.CompositeConstruct(x, y));
         break;
     case TextureType::Color1D:
@@ -216,6 +220,7 @@ void SubScaleCoord(IR::IREmitter& ir, IR::Inst& inst, const IR::U1& is_scaled) {
     const IR::U32 scaled_y{SubScale(ir, is_scaled, coord_y, IR::Attribute::PositionY)};
     switch (info.type) {
     case TextureType::Color2D:
+    case TextureType::Color2DRect:
         inst.SetArg(1, ir.CompositeConstruct(scaled_x, scaled_y));
         break;
     case TextureType::ColorArray2D: {
diff --git a/src/shader_recompiler/ir_opt/texture_pass.cpp b/src/shader_recompiler/ir_opt/texture_pass.cpp
index ca3e306e8..597112ba4 100644
--- a/src/shader_recompiler/ir_opt/texture_pass.cpp
+++ b/src/shader_recompiler/ir_opt/texture_pass.cpp
@@ -362,6 +362,21 @@ private:
     TextureDescriptors& texture_descriptors;
     ImageDescriptors& image_descriptors;
 };
+
+void PatchImageSampleImplicitLod(IR::Block& block, IR::Inst& inst) {
+    IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
+    const auto info{inst.Flags<IR::TextureInstInfo>()};
+    const IR::Value coord(inst.Arg(1));
+    const IR::Value handle(ir.Imm32(0));
+    const IR::U32 lod{ir.Imm32(0)};
+    const IR::Value texture_size = ir.ImageQueryDimension(handle, lod, info);
+    inst.SetArg(
+        1, ir.CompositeConstruct(
+               ir.FPMul(IR::F32(ir.CompositeExtract(coord, 0)),
+                        ir.FPRecip(ir.ConvertUToF(32, 32, ir.CompositeExtract(texture_size, 0)))),
+               ir.FPMul(IR::F32(ir.CompositeExtract(coord, 1)),
+                        ir.FPRecip(ir.ConvertUToF(32, 32, ir.CompositeExtract(texture_size, 1))))));
+}
 } // Anonymous namespace
 
 void TexturePass(Environment& env, IR::Program& program) {
@@ -399,6 +414,14 @@ void TexturePass(Environment& env, IR::Program& program) {
             flags.type.Assign(ReadTextureType(env, cbuf));
             inst->SetFlags(flags);
             break;
+        case IR::Opcode::ImageSampleImplicitLod:
+            if (flags.type != TextureType::Color2D) {
+                break;
+            }
+            if (ReadTextureType(env, cbuf) == TextureType::Color2DRect) {
+                PatchImageSampleImplicitLod(*texture_inst.block, *texture_inst.inst);
+            }
+            break;
         case IR::Opcode::ImageFetch:
             if (flags.type != TextureType::Color1D) {
                 break;
diff --git a/src/shader_recompiler/shader_info.h b/src/shader_recompiler/shader_info.h
index fd2ef5336..f5690805c 100644
--- a/src/shader_recompiler/shader_info.h
+++ b/src/shader_recompiler/shader_info.h
@@ -24,8 +24,9 @@ enum class TextureType : u32 {
     ColorCube,
     ColorArrayCube,
     Buffer,
+    Color2DRect,
 };
-constexpr u32 NUM_TEXTURE_TYPES = 8;
+constexpr u32 NUM_TEXTURE_TYPES = 9;
 
 enum class ImageFormat : u32 {
     Typeless,