1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "webkit/common/gpu/grcontext_for_webgraphicscontext3d.h" 6 7 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h" 8 #include "third_party/skia/include/gpu/GrContext.h" 9 #include "third_party/skia/include/gpu/gl/GrGLInterface.h" 10 11 namespace webkit { 12 namespace gpu { 13 14 static void BindWebGraphicsContext3DGLContextCallback( 15 const GrGLInterface* interface) { 16 reinterpret_cast<WebKit::WebGraphicsContext3D*>( 17 interface->fCallbackData)->makeContextCurrent(); 18 } 19 20 GrContextForWebGraphicsContext3D::GrContextForWebGraphicsContext3D( 21 WebKit::WebGraphicsContext3D* context3d) { 22 if (!context3d) 23 return; 24 25 skia::RefPtr<GrGLInterface> interface = skia::AdoptRef( 26 context3d->createGrGLInterface()); 27 if (!interface) 28 return; 29 30 interface->fCallback = BindWebGraphicsContext3DGLContextCallback; 31 interface->fCallbackData = 32 reinterpret_cast<GrGLInterfaceCallbackData>(context3d); 33 34 gr_context_ = skia::AdoptRef(GrContext::Create( 35 kOpenGL_GrBackend, 36 reinterpret_cast<GrBackendContext>(interface.get()))); 37 if (!gr_context_) 38 return; 39 40 bool nonzero_allocation = true; 41 SetMemoryLimit(nonzero_allocation); 42 } 43 44 GrContextForWebGraphicsContext3D::~GrContextForWebGraphicsContext3D() { 45 if (gr_context_) 46 gr_context_->contextDestroyed(); 47 } 48 49 void GrContextForWebGraphicsContext3D::SetMemoryLimit(bool nonzero_allocation) { 50 if (!gr_context_) 51 return; 52 53 if (nonzero_allocation) { 54 // The limit of the number of textures we hold in the GrContext's 55 // bitmap->texture cache. 56 static const int kMaxGaneshTextureCacheCount = 2048; 57 // The limit of the bytes allocated toward textures in the GrContext's 58 // bitmap->texture cache. 59 static const size_t kMaxGaneshTextureCacheBytes = 96 * 1024 * 1024; 60 61 gr_context_->setTextureCacheLimits( 62 kMaxGaneshTextureCacheCount, kMaxGaneshTextureCacheBytes); 63 } else { 64 gr_context_->freeGpuResources(); 65 gr_context_->setTextureCacheLimits(0, 0); 66 } 67 } 68 69 } // namespace gpu 70 } // namespace webkit 71
