Add support for fragment shader interlock (#2768)

* Support coherent images

* Add support for fragment shader interlock

* Change to tree based match approach

* Refactor + check for branch targets and external registers

* Make detection more robust

* Use Intel fragment shader ordering if interlock is not available, use nothing if both are not available

* Remove unused field

1 files changed, 16 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs b/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
index 85288afa..7dcd1671 100644
--- a/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
@@ -32,6 +32,17 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
             {
                 context.AppendLine("#extension GL_ARB_compute_shader : enable");
             }
+            else if (context.Config.Stage == ShaderStage.Fragment)
+            {
+                if (context.Config.GpuAccessor.QueryHostSupportsFragmentShaderInterlock())
+                {
+                    context.AppendLine("#extension GL_ARB_fragment_shader_interlock : enable");
+                }
+                else if (context.Config.GpuAccessor.QueryHostSupportsFragmentShaderOrderingIntel())
+                {
+                    context.AppendLine("#extension GL_INTEL_fragment_shader_ordering : enable");
+                }
+            }
 
             if (context.Config.GpPassthrough)
             {
@@ -431,6 +442,11 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
 
                 string imageTypeName = descriptor.Type.ToGlslImageType(descriptor.Format.GetComponentType());
 
+                if (descriptor.Flags.HasFlag(TextureUsageFlags.ImageCoherent))
+                {
+                    imageTypeName = "coherent " + imageTypeName;
+                }
+
                 string layout = descriptor.Format.ToGlslFormat();
 
                 if (!string.IsNullOrEmpty(layout))