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87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/gpu/gl_context.h"
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#include "mojo/public/cpp/application/connect.h"
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#include "mojo/public/interfaces/application/application_connector.mojom.h"
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#include "mojo/services/gpu/interfaces/gpu.mojom.h"
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namespace mojo {
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GLContext::GLContext(InterfaceHandle<CommandBuffer> command_buffer)
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: mgl_context_(
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MGLCreateContext(MGL_API_VERSION_GLES2,
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command_buffer.PassHandle().release().value(),
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MGL_NO_CONTEXT,
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&ContextLostThunk,
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this,
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Environment::GetDefaultAsyncWaiter())) {
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DCHECK(mgl_context_ != MGL_NO_CONTEXT);
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}
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GLContext::~GLContext() {
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MGLDestroyContext(mgl_context_);
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}
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scoped_refptr<GLContext> GLContext::CreateOffscreen(
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ApplicationConnector* connector) {
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ServiceProviderPtr native_viewport;
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connector->ConnectToApplication("mojo:native_viewport_service",
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GetProxy(&native_viewport), nullptr);
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GpuPtr gpu_service;
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ConnectToService(native_viewport.get(), &gpu_service);
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InterfaceHandle<CommandBuffer> command_buffer;
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gpu_service->CreateOffscreenGLES2Context(GetProxy(&command_buffer));
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return new GLContext(command_buffer.Pass());
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}
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scoped_refptr<GLContext> GLContext::CreateFromCommandBuffer(
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InterfaceHandle<CommandBuffer> command_buffer) {
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return new GLContext(command_buffer.Pass());
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}
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bool GLContext::IsCurrent() const {
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return mgl_context_ == MGLGetCurrentContext();
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}
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void GLContext::AddObserver(Observer* observer) {
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DCHECK(observer);
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observers_.AddObserver(observer);
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}
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void GLContext::RemoveObserver(Observer* observer) {
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DCHECK(observer);
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observers_.RemoveObserver(observer);
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}
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void GLContext::ContextLostThunk(void* self) {
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static_cast<GLContext*>(self)->OnContextLost();
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}
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void GLContext::OnContextLost() {
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DCHECK(!lost_);
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lost_ = true;
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FOR_EACH_OBSERVER(Observer, observers_, OnContextLost());
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}
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GLContext::Scope::Scope(const scoped_refptr<GLContext>& gl_context)
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: gl_context_(gl_context), prior_mgl_context_(MGLGetCurrentContext()) {
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DCHECK(gl_context_);
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CHECK(!gl_context_->is_lost()); // common bug, check it in release builds
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MGLMakeCurrent(gl_context_->mgl_context_);
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}
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GLContext::Scope::~Scope() {
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DCHECK(gl_context_->IsCurrent());
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MGLMakeCurrent(prior_mgl_context_);
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}
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GLContext::Observer::~Observer() {}
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} // namespace mojo
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