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// Copyright (c) 2013 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.
#include "webkit/common/gpu/grcontext_for_webgraphicscontext3d.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
namespace webkit {
namespace gpu {
static void BindWebGraphicsContext3DGLContextCallback(
const GrGLInterface* interface) {
reinterpret_cast<WebKit::WebGraphicsContext3D*>(
interface->fCallbackData)->makeContextCurrent();
}
GrContextForWebGraphicsContext3D::GrContextForWebGraphicsContext3D(
WebKit::WebGraphicsContext3D* context3d) {
if (!context3d)
return;
skia::RefPtr<GrGLInterface> interface = skia::AdoptRef(
context3d->createGrGLInterface());
if (!interface)
return;
interface->fCallback = BindWebGraphicsContext3DGLContextCallback;
interface->fCallbackData =
reinterpret_cast<GrGLInterfaceCallbackData>(context3d);
gr_context_ = skia::AdoptRef(GrContext::Create(
kOpenGL_GrBackend,
reinterpret_cast<GrBackendContext>(interface.get())));
if (!gr_context_)
return;
bool nonzero_allocation = true;
SetMemoryLimit(nonzero_allocation);
}
GrContextForWebGraphicsContext3D::~GrContextForWebGraphicsContext3D() {
if (gr_context_)
gr_context_->contextDestroyed();
}
void GrContextForWebGraphicsContext3D::SetMemoryLimit(bool nonzero_allocation) {
if (!gr_context_)
return;
if (nonzero_allocation) {
// The limit of the number of textures we hold in the GrContext's
// bitmap->texture cache.
static const int kMaxGaneshTextureCacheCount = 2048;
// The limit of the bytes allocated toward textures in the GrContext's
// bitmap->texture cache.
static const size_t kMaxGaneshTextureCacheBytes = 96 * 1024 * 1024;
gr_context_->setTextureCacheLimits(
kMaxGaneshTextureCacheCount, kMaxGaneshTextureCacheBytes);
} else {
gr_context_->freeGpuResources();
gr_context_->setTextureCacheLimits(0, 0);
}
}
} // namespace gpu
} // namespace webkit
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