From 851c76233db1d6fab507b0ab3423284a79829ede Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Sat, 19 Jun 2021 11:16:25 -0400
Subject: [PATCH] util_shaders: Specify ASTC decoder memory barrier bits

---
 src/video_core/renderer_opengl/util_shaders.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/video_core/renderer_opengl/util_shaders.cpp b/src/video_core/renderer_opengl/util_shaders.cpp
index 7e32f49caa..abaf1ee6a7 100644
--- a/src/video_core/renderer_opengl/util_shaders.cpp
+++ b/src/video_core/renderer_opengl/util_shaders.cpp
@@ -118,7 +118,12 @@ void UtilShaders::ASTCDecode(Image& image, const ImageBufferMap& map,
 
         glDispatchCompute(num_dispatches_x, num_dispatches_y, image.info.resources.layers);
     }
-    glMemoryBarrier(GL_ALL_BARRIER_BITS);
+    // Precautionary barrier to ensure the compute shader is done decoding prior to texture access.
+    // GL_TEXTURE_FETCH_BARRIER_BIT and GL_SHADER_IMAGE_ACCESS_BARRIER_BIT are used in a separate
+    // glMemoryBarrier call by the texture cache runtime
+    glMemoryBarrier(GL_UNIFORM_BARRIER_BIT | GL_COMMAND_BARRIER_BIT | GL_PIXEL_BUFFER_BARRIER_BIT |
+                    GL_TEXTURE_UPDATE_BARRIER_BIT | GL_BUFFER_UPDATE_BARRIER_BIT |
+                    GL_SHADER_STORAGE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
     program_manager.RestoreGuestCompute();
 }