Mozart: Specify texture origin explicitly.

mojo/skia/ganesh_image_factory.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES
 #endif
 
 #include "mojo/skia/ganesh_image_factory.h"
 
@@ skipping 11 matching lines @@
   release_callback->Run();
   delete release_callback;
 }
 }  // namespace
 
 ::skia::RefPtr<SkImage> CreateImageFromTexture(
     const GaneshContext::Scope& scope,
     uint32_t texture_id,
     uint32_t width,
     uint32_t height,
+    GrSurfaceOrigin origin,
     const base::Closure& release_callback) {
   DCHECK(texture_id);
   DCHECK(width);
   DCHECK(height);
 
   // TODO(jeffbrown): Give the caller more control over these parameters.
   GrGLTextureInfo info;
   info.fTarget = GL_TEXTURE_2D;
   info.fID = texture_id;
 
   GrBackendTextureDesc desc;
   desc.fFlags = kRenderTarget_GrBackendTextureFlag;
   desc.fWidth = width;
   desc.fHeight = height;
   desc.fConfig = kSkia8888_GrPixelConfig;
-  desc.fOrigin = kTopLeft_GrSurfaceOrigin;
+  desc.fOrigin = origin;
   desc.fTextureHandle = reinterpret_cast<GrBackendObject>(&info);
   return ::skia::AdoptRef(SkImage::NewFromTexture(
       scope.gr_context(), desc, kPremul_SkAlphaType, &ReleaseThunk,
       new base::Closure(release_callback)));
 }
 
 MailboxTextureImageGenerator::MailboxTextureImageGenerator(
     const GLbyte mailbox_name[GL_MAILBOX_SIZE_CHROMIUM],
     GLuint sync_point,
     uint32_t width,
-    uint32_t height)
+    uint32_t height,
+    GrSurfaceOrigin origin)
     : SkImageGenerator(SkImageInfo::MakeN32Premul(width, height)),
-      sync_point_(sync_point) {
+      sync_point_(sync_point),
+      origin_(origin) {
   DCHECK(mailbox_name);
   memcpy(mailbox_name_, mailbox_name, GL_MAILBOX_SIZE_CHROMIUM);
 }
 
 MailboxTextureImageGenerator::~MailboxTextureImageGenerator() {}
 
 GrTexture* MailboxTextureImageGenerator::onGenerateTexture(
     GrContext* context,
     const SkIRect* subset) {
   if (sync_point_)
     glWaitSyncPointCHROMIUM(sync_point_);
 
   GLuint texture_id =
       glCreateAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox_name_);
   if (!texture_id)
     return nullptr;
 
   // TODO(jeffbrown): Give the caller more control over these parameters.
   GrGLTextureInfo info;
   info.fTarget = GL_TEXTURE_2D;
   info.fID = texture_id;
 
   GrBackendTextureDesc desc;
   desc.fFlags = kRenderTarget_GrBackendTextureFlag;
   desc.fWidth = getInfo().width();
   desc.fHeight = getInfo().height();
   desc.fConfig = kSkia8888_GrPixelConfig;
-  desc.fOrigin = kTopLeft_GrSurfaceOrigin;
+  desc.fOrigin = origin_;
   desc.fTextureHandle = reinterpret_cast<GrBackendObject>(&info);
   return context->textureProvider()->wrapBackendTexture(desc,
                                                         kAdopt_GrWrapOwnership);
 }
 
 }  // namespace skia
 }  // namespace mojo