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// Copyright 2014 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 <stdint.h>
#include <utility>
#include "base/lazy_instance.h"
#include "base/threading/thread_local.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "mojo/gles2/gles2_context.h"
// Even though this isn't used here, we need to include it to get the symbols to
// be exported in component build.
#include "mojo/public/c/gles2/chromium_extension.h"
#include "mojo/public/c/gles2/gles2.h"
using gles2::GLES2Context;
namespace {
const int32_t kNone = 0x3038; // EGL_NONE
base::LazyInstance<base::ThreadLocalPointer<gpu::gles2::GLES2Interface> >::Leaky
g_gpu_interface;
} // namespace
extern "C" {
MojoGLES2Context MojoGLES2CreateContext(MojoHandle handle,
const int32_t* attrib_list,
MojoGLES2ContextLost lost_callback,
void* closure) {
mojo::MessagePipeHandle mph(handle);
mojo::ScopedMessagePipeHandle scoped_handle(mph);
std::vector<int32_t> attribs;
if (attrib_list) {
for (int32_t const* p = attrib_list; *p != kNone;) {
attribs.push_back(*p++);
attribs.push_back(*p++);
}
}
attribs.push_back(kNone);
scoped_ptr<GLES2Context> client(new GLES2Context(
attribs, std::move(scoped_handle), lost_callback, closure));
if (!client->Initialize())
client.reset();
return client.release();
}
void MojoGLES2DestroyContext(MojoGLES2Context context) {
delete static_cast<GLES2Context*>(context);
}
void MojoGLES2MakeCurrent(MojoGLES2Context context) {
gpu::gles2::GLES2Interface* interface = NULL;
if (context) {
GLES2Context* client = static_cast<GLES2Context*>(context);
interface = client->interface();
DCHECK(interface);
}
g_gpu_interface.Get().Set(interface);
}
void MojoGLES2SwapBuffers() {
DCHECK(g_gpu_interface.Get().Get());
g_gpu_interface.Get().Get()->SwapBuffers();
}
void* MojoGLES2GetGLES2Interface(MojoGLES2Context context) {
return static_cast<GLES2Context*>(context)->interface();
}
void* MojoGLES2GetContextSupport(MojoGLES2Context context) {
return static_cast<GLES2Context*>(context)->context_support();
}
#define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
ReturnType GL_APIENTRY gl##Function PARAMETERS { \
DCHECK(g_gpu_interface.Get().Get()); \
return g_gpu_interface.Get().Get()->Function ARGUMENTS; \
}
#include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
#include "mojo/public/c/gles2/gles2_call_visitor_chromium_extension_autogen.h"
#undef VISIT_GL_CALL
} // extern "C"
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