shader: Properly scale image reads and add GL SPIR-V support

Thanks for everything!

1 files changed, 8 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
index 82b6f0d77..2f78d0267 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp
@@ -620,6 +620,14 @@ void EmitIsTextureScaled(EmitContext& ctx, IR::Inst& inst, const IR::Value& inde
     ctx.AddU1("{}=(ftou(scaling.x)&{})!=0;", inst, 1u << image_index);
 }
 
+void EmitIsImageScaled(EmitContext& ctx, IR::Inst& inst, const IR::Value& index) {
+    if (!index.IsImmediate()) {
+        throw NotImplementedException("Non-constant texture rescaling");
+    }
+    const u32 image_index{index.U32()};
+    ctx.AddU1("{}=(ftou(scaling.y)&{})!=0;", inst, 1u << image_index);
+}
+
 void EmitBindlessImageSampleImplicitLod(EmitContext&) {
     NotImplemented();
 }