gpu/command_buffer/client/gl_in_process_context.h

   1 // Copyright (c) 2012 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 #ifndef GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_
   6 #define GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_
   7
   8 #include "base/callback.h"
   9 #include "base/compiler_specific.h"
  10 #include "gles2_impl_export.h"
  11 #include "ui/gfx/native_widget_types.h"
  12 #include "ui/gl/gl_surface.h"
  13 #include "ui/gl/gpu_preference.h"
  14
  15 namespace gfx {
  16 class Size;
  17 }
  18
  19 #if defined(OS_ANDROID)
  20 namespace gfx {
  21 class SurfaceTexture;
  22 }
  23 #endif
  24
  25 namespace gpu {
  26
  27 namespace gles2 {
  28 class GLES2Implementation;
  29 }
  30
  31 // The default uninitialized value is -1.
  32 struct GLES2_IMPL_EXPORT GLInProcessContextAttribs {
  33   GLInProcessContextAttribs();
  34
  35   int32 alpha_size;
  36   int32 blue_size;
  37   int32 green_size;
  38   int32 red_size;
  39   int32 depth_size;
  40   int32 stencil_size;
  41   int32 samples;
  42   int32 sample_buffers;
  43 };
  44
  45 class GLES2_IMPL_EXPORT GLInProcessContext {
  46  public:
  47   virtual ~GLInProcessContext() {}
  48
  49   // Create a GLInProcessContext, if |is_offscreen| is true, renders to an
  50   // offscreen context. |attrib_list| must be NULL or a NONE-terminated list
  51   // of attribute/value pairs.
  52   static GLInProcessContext* CreateContext(
  53       bool is_offscreen,
  54       gfx::AcceleratedWidget window,
  55       const gfx::Size& size,
  56       bool share_resources,
  57       const char* allowed_extensions,
  58       const GLInProcessContextAttribs& attribs,
  59       gfx::GpuPreference gpu_preference);
  60
  61   // Create context with the provided GLSurface. All other arguments match
  62   // CreateContext factory above. Can only be called if the command buffer
  63   // service runs on the same thread as this client because GLSurface is not
  64   // thread safe.
  65   static GLInProcessContext* CreateWithSurface(
  66       scoped_refptr<gfx::GLSurface> surface,
  67       bool share_resources,
  68       const char* allowed_extensions,
  69       const GLInProcessContextAttribs& attribs,
  70       gfx::GpuPreference gpu_preference);
  71
  72   virtual void SetContextLostCallback(const base::Closure& callback) = 0;
  73
  74   virtual void SignalSyncPoint(unsigned sync_point,
  75                                const base::Closure& callback) = 0;
  76
  77   virtual void SignalQuery(unsigned query, const base::Closure& callback) = 0;
  78
  79   // Allows direct access to the GLES2 implementation so a GLInProcessContext
  80   // can be used without making it current.
  81   virtual gles2::GLES2Implementation* GetImplementation() = 0;
  82
  83 #if defined(OS_ANDROID)
  84   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
  85       uint32 stream_id) = 0;
  86 #endif
  87 };
  88
  89 }  // namespace gpu
  90
  91 #endif  // GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_