commit 84cff13a080c53d15a3c670b90732373517a3262
author Greg Daniel <egdaniel@google.com> Wed Mar 22 16:25:53 2017 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Wed Mar 22 21:11:04 2017 +0000
tree d9c2d180c7e9da435b7425c5b80930b8b93c886b
parent 22bc8653d704584e13f35844dafb5ddeb9989127

Disable dual source blending on AMD vulkan.

BUG=skia:6405

Change-Id: I63b60135f1562a4ce1f1a37b719aa01fc62d8790
Reviewed-on: https://skia-review.googlesource.com/9984
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>

src/gpu/vk/GrVkCaps.cpp

diff --git a/src/gpu/vk/GrVkCaps.cpp b/src/gpu/vk/GrVkCaps.cpp
index af2a41d..bf343a9 100644
--- a/src/gpu/vk/GrVkCaps.cpp
+++ b/src/gpu/vk/GrVkCaps.cpp
@@ -222,6 +222,12 @@
     shaderCaps->fGeometryShaderSupport = SkToBool(featureFlags & kGeometryShader_GrVkFeatureFlag);
 
     shaderCaps->fDualSourceBlendingSupport = SkToBool(featureFlags & kDualSrcBlend_GrVkFeatureFlag);
+    if (kAMD_VkVendor == properties.vendorID) {
+        // Currently DualSourceBlending is not working on AMD. vkCreateGraphicsPipeline fails when
+        // using a draw with dual source. Looking into whether it is driver bug or issue with our
+        // SPIR-V. Bug skia:6405
+        shaderCaps->fDualSourceBlendingSupport = false;
+    }
 
     shaderCaps->fIntegerSupport = true;