mojo/gles2/gles2_impl.cc

   1 // Copyright 2014 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 "mojo/public/c/gles2/gles2.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "base/threading/thread_local.h"
   9 #include "gpu/GLES2/gl2extchromium.h"
  10 #include "gpu/command_buffer/client/gles2_interface.h"
  11 #include "mojo/gles2/gles2_context.h"
  12
  13 using gles2::GLES2Context;
  14
  15 namespace {
  16
  17 const int32_t kNone = 0x3038;  // EGL_NONE
  18
  19 base::LazyInstance<base::ThreadLocalPointer<gpu::gles2::GLES2Interface> >::Leaky
  20     g_gpu_interface;
  21
  22 void RunSignalSyncCallback(MojoGLES2SignalSyncPointCallback callback,
  23                            void* closure) {
  24   callback(closure);
  25 }
  26
  27 }  // namespace
  28
  29 extern "C" {
  30 MojoGLES2Context MojoGLES2CreateContext(MojoHandle handle,
  31                                         const int32_t* attrib_list,
  32                                         MojoGLES2ContextLost lost_callback,
  33                                         void* closure,
  34                                         const MojoAsyncWaiter* async_waiter) {
  35   mojo::MessagePipeHandle mph(handle);
  36   mojo::ScopedMessagePipeHandle scoped_handle(mph);
  37   std::vector<int32_t> attribs;
  38   if (attrib_list) {
  39     for (int32_t const* p = attrib_list; *p != kNone;) {
  40       attribs.push_back(*p++);
  41       attribs.push_back(*p++);
  42     }
  43   }
  44   attribs.push_back(kNone);
  45   scoped_ptr<GLES2Context> client(new GLES2Context(
  46       attribs, async_waiter, scoped_handle.Pass(), lost_callback, closure));
  47   if (!client->Initialize())
  48     client.reset();
  49   return client.release();
  50 }
  51
  52 void MojoGLES2DestroyContext(MojoGLES2Context context) {
  53   delete static_cast<GLES2Context*>(context);
  54 }
  55
  56 void MojoGLES2MakeCurrent(MojoGLES2Context context) {
  57   gpu::gles2::GLES2Interface* interface = NULL;
  58   if (context) {
  59     GLES2Context* client = static_cast<GLES2Context*>(context);
  60     interface = client->interface();
  61     DCHECK(interface);
  62   }
  63   g_gpu_interface.Get().Set(interface);
  64 }
  65
  66 void MojoGLES2SwapBuffers() {
  67   DCHECK(g_gpu_interface.Get().Get());
  68   g_gpu_interface.Get().Get()->SwapBuffers();
  69 }
  70
  71 void MojoGLES2SignalSyncPoint(
  72     MojoGLES2Context context,
  73     uint32_t sync_point,
  74     MojoGLES2SignalSyncPointCallback callback,
  75     void* closure) {
  76   DCHECK(context);
  77   static_cast<GLES2Context*>(context)->context_support()->SignalSyncPoint(
  78       sync_point, base::Bind(&RunSignalSyncCallback, callback, closure));
  79 }
  80
  81 void* MojoGLES2GetGLES2Interface(MojoGLES2Context context) {
  82   return static_cast<GLES2Context*>(context)->interface();
  83 }
  84
  85 void* MojoGLES2GetContextSupport(MojoGLES2Context context) {
  86   return static_cast<GLES2Context*>(context)->context_support();
  87 }
  88
  89 #define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \
  90   ReturnType GL_APIENTRY gl##Function PARAMETERS {                 \
  91     DCHECK(g_gpu_interface.Get().Get());                           \
  92     return g_gpu_interface.Get().Get()->Function ARGUMENTS;        \
  93   }
  94 #include "mojo/public/c/gles2/gles2_call_visitor_autogen.h"
  95 #include "mojo/public/c/gles2/gles2_call_visitor_chromium_extension_autogen.h"
  96 #undef VISIT_GL_CALL
  97
  98 }  // extern "C"