[Bf-blender-cvs] [592e306236d] blender-v2.83-release: Fix T74024 Faces missing, weird faces added

[Clément Foucault]

Commit: 592e306236defaf5f84bb6aa2638013e95b02fac
Author: Clément Foucault
Date:   Sun Jun 28 15:51:09 2020 +0200
Branches: blender-v2.83-release
https://developer.blender.org/rB592e306236defaf5f84bb6aa2638013e95b02fac

Fix T74024 Faces missing, weird faces added

Workaround by adding a special case for that driver in gpu_extensions.c

===================================================================

M	source/blender/gpu/intern/gpu_extensions.c

===================================================================

diff --git a/source/blender/gpu/intern/gpu_extensions.c b/source/blender/gpu/intern/gpu_extensions.c
index c5c0de89768..19b4ea5bf4b 100644
--- a/source/blender/gpu/intern/gpu_extensions.c
+++ b/source/blender/gpu/intern/gpu_extensions.c
@@ -288,6 +288,13 @@ void gpu_extensions_init(void)
     }
   }
 
+  if (GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_UNIX, GPU_DRIVER_OPENSOURCE) &&
+      strstr(renderer, "AMD VERDE")) {
+    /* We have issues with this specific renderer. (see T74024) */
+    GG.unused_fb_slot_workaround = true;
+    GG.broken_amd_driver = true;
+  }
+
   if (GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_MAC, GPU_DRIVER_OFFICIAL)) {
     if (strstr(renderer, "AMD Radeon Pro") || strstr(renderer, "AMD Radeon R9") ||
         strstr(renderer, "AMD Radeon RX")) {