glsl: Implement SampleId and SetSampleMask

plus some minor refactoring of implementations

src/shader_recompiler/backend/glsl/emit_context.cpp

@@ -256,6 +256,12 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
         if (runtime_info.force_early_z) {
             header += "layout(early_fragment_tests)in;";
         }
+        if (info.uses_sample_id) {
+            header += "in int gl_SampleID;";
+        }
+        if (info.stores_sample_mask) {
+            header += "out int gl_SampleMask[];";
+        }
         break;
     case Stage::Compute:
         stage_name = "cs";

src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp

@@ -239,7 +239,6 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
         ctx.AddF32("{}=itof(gl_FrontFacing?-1:0);", inst);
         break;
     default:
-        fmt::print("Get attribute {}", attr);
         throw NotImplementedException("Get attribute {}", attr);
     }
 }
@@ -397,10 +396,39 @@ void EmitSetFragColor(EmitContext& ctx, u32 index, u32 component, std::string_vi
     ctx.Add("frag_color{}.{}={};", index, swizzle, value);
 }
 
+void EmitSetSampleMask(EmitContext& ctx, std::string_view value) {
+    ctx.Add("gl_SampleMask[0]=int({})", value);
+}
+
+void EmitSetFragDepth(EmitContext& ctx, std::string_view value) {
+    ctx.Add("gl_FragDepth={};", value);
+}
+
 void EmitLocalInvocationId(EmitContext& ctx, IR::Inst& inst) {
     ctx.AddU32x3("{}=gl_LocalInvocationID;", inst);
 }
 
+void EmitWorkgroupId(EmitContext& ctx, IR::Inst& inst) {
+    ctx.AddU32x3("{}=gl_WorkGroupID;", inst);
+}
+
+void EmitInvocationId(EmitContext& ctx, IR::Inst& inst) {
+    ctx.AddU32("{}=uint(gl_InvocationID);", inst);
+}
+
+void EmitSampleId(EmitContext& ctx, IR::Inst& inst) {
+    ctx.AddU32("{}=uint(gl_SampleID);", inst);
+}
+
+void EmitIsHelperInvocation(EmitContext& ctx, IR::Inst& inst) {
+    ctx.AddU1("{}=gl_HelperInvocation;", inst);
+}
+
+void EmitYDirection(EmitContext& ctx, IR::Inst& inst) {
+    ctx.uses_y_direction = true;
+    ctx.AddF32("{}=gl_FrontMaterial.ambient.a;", inst);
+}
+
 void EmitLoadLocal(EmitContext& ctx, IR::Inst& inst, std::string_view word_offset) {
     ctx.AddU32("{}=lmem[{}];", inst, word_offset);
 }

src/shader_recompiler/backend/glsl/emit_glsl_not_implemented.cpp

@@ -124,14 +124,6 @@ void EmitGetIndirectBranchVariable(EmitContext& ctx) {
     NotImplemented();
 }
 
-void EmitSetSampleMask(EmitContext& ctx, std::string_view value) {
-    NotImplemented();
-}
-
-void EmitSetFragDepth(EmitContext& ctx, std::string_view value) {
-    ctx.Add("gl_FragDepth={};", value);
-}
-
 void EmitGetZFlag(EmitContext& ctx) {
     NotImplemented();
 }
@@ -164,27 +156,6 @@ void EmitSetOFlag(EmitContext& ctx) {
     NotImplemented();
 }
 
-void EmitWorkgroupId(EmitContext& ctx, IR::Inst& inst) {
-    ctx.AddU32x3("{}=gl_WorkGroupID;", inst);
-}
-
-void EmitInvocationId(EmitContext& ctx, IR::Inst& inst) {
-    ctx.AddU32("{}=uint(gl_InvocationID);", inst);
-}
-
-void EmitSampleId(EmitContext& ctx, IR::Inst& inst) {
-    NotImplemented();
-}
-
-void EmitIsHelperInvocation(EmitContext& ctx, IR::Inst& inst) {
-    ctx.AddU1("{}=gl_HelperInvocation;", inst);
-}
-
-void EmitYDirection(EmitContext& ctx, IR::Inst& inst) {
-    ctx.uses_y_direction = true;
-    ctx.AddF32("{}=gl_FrontMaterial.ambient.a;", inst);
-}
-
 void EmitUndefU1(EmitContext& ctx, IR::Inst& inst) {
     ctx.AddU1("{}=false;", inst);
 }