Fix incorrect fragment origin when YNegate is enabled (#4673)

* Fix incorrect fragment origin when YNegate is enabled

* Shader cache version bump

* Do not update support buffer if shader does not read gl_FragCoord

* Pass unscaled viewport size to the support buffer

2 files changed, 13 insertions, 4 deletions

diff --git a/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs b/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
index 2370b49f..2a45e23d 100644
--- a/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
+++ b/src/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
@@ -188,10 +188,19 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
                 context.AppendLine();
             }
 
-            if (context.Config.Stage == ShaderStage.Fragment && context.Config.GpuAccessor.QueryEarlyZForce())
+            if (context.Config.Stage == ShaderStage.Fragment)
             {
-                context.AppendLine("layout(early_fragment_tests) in;");
-                context.AppendLine();
+                if (context.Config.GpuAccessor.QueryEarlyZForce())
+                {
+                    context.AppendLine("layout (early_fragment_tests) in;");
+                    context.AppendLine();
+                }
+
+                if (context.Config.Properties.OriginUpperLeft)
+                {
+                    context.AppendLine("layout (origin_upper_left) in vec4 gl_FragCoord;");
+                    context.AppendLine();
+                }
             }
 
             if ((info.HelperFunctionsMask & HelperFunctionsMask.MultiplyHighS32) != 0)
diff --git a/src/Ryujinx.Graphics.Shader/CodeGen/Spirv/SpirvGenerator.cs b/src/Ryujinx.Graphics.Shader/CodeGen/Spirv/SpirvGenerator.cs
index c8fcd75a..21797975 100644
--- a/src/Ryujinx.Graphics.Shader/CodeGen/Spirv/SpirvGenerator.cs
+++ b/src/Ryujinx.Graphics.Shader/CodeGen/Spirv/SpirvGenerator.cs
@@ -251,7 +251,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Spirv
                 }
                 else if (context.Config.Stage == ShaderStage.Fragment)
                 {
-                    context.AddExecutionMode(spvFunc, context.Config.Options.TargetApi == TargetApi.Vulkan
+                    context.AddExecutionMode(spvFunc, context.Config.Properties.OriginUpperLeft
                         ? ExecutionMode.OriginUpperLeft
                         : ExecutionMode.OriginLowerLeft);