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 "gl_in_process_context_export.h"
  11 #include "gpu/command_buffer/service/in_process_command_buffer.h"
  12 #include "ui/gfx/native_widget_types.h"
  13 #include "ui/gl/gl_surface.h"
  14 #include "ui/gl/gpu_preference.h"
  15
  16 namespace gfx {
  17 class Size;
  18 }
  19
  20 #if defined(OS_ANDROID)
  21 namespace gfx {
  22 class SurfaceTexture;
  23 }
  24 #endif
  25
  26 namespace gpu {
  27
  28 namespace gles2 {
  29 class GLES2Implementation;
  30 }
  31
  32 // The default uninitialized value is -1.
  33 struct GL_IN_PROCESS_CONTEXT_EXPORT GLInProcessContextAttribs {
  34   GLInProcessContextAttribs();
  35
  36   int32 alpha_size;
  37   int32 blue_size;
  38   int32 green_size;
  39   int32 red_size;
  40   int32 depth_size;
  41   int32 stencil_size;
  42   int32 samples;
  43   int32 sample_buffers;
  44   int32 fail_if_major_perf_caveat;
  45   int32 lose_context_when_out_of_memory;
  46 };
  47
  48 class GL_IN_PROCESS_CONTEXT_EXPORT GLInProcessContext {
  49  public:
  50   virtual ~GLInProcessContext() {}
  51
  52   // Create a GLInProcessContext, if |is_offscreen| is true, renders to an
  53   // offscreen context. |attrib_list| must be NULL or a NONE-terminated list
  54   // of attribute/value pairs.
  55   // TODO(boliu): Fix all callsites to use Create and remove this.
  56   static GLInProcessContext* CreateContext(
  57       bool is_offscreen,
  58       gfx::AcceleratedWidget window,
  59       const gfx::Size& size,
  60       bool share_resources,
  61       const GLInProcessContextAttribs& attribs,
  62       gfx::GpuPreference gpu_preference);
  63
  64   // If |surface| is not NULL, then it must match |is_offscreen| and |size|,
  65   // |window| must be gfx::kNullAcceleratedWidget, and the command buffer
  66   // service must run on the same thread as this client because GLSurface is
  67   // not thread safe. If |surface| is NULL, then the other parameters are used
  68   // to correctly create a surface.
  69   // Only one of |share_context| and |use_global_share_group| can be used at
  70   // the same time.
  71   static GLInProcessContext* Create(
  72       scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
  73       scoped_refptr<gfx::GLSurface> surface,
  74       bool is_offscreen,
  75       gfx::AcceleratedWidget window,
  76       const gfx::Size& size,
  77       GLInProcessContext* share_context,
  78       bool use_global_share_group,
  79       const GLInProcessContextAttribs& attribs,
  80       gfx::GpuPreference gpu_preference);
  81
  82   virtual void SetContextLostCallback(const base::Closure& callback) = 0;
  83
  84   // Allows direct access to the GLES2 implementation so a GLInProcessContext
  85   // can be used without making it current.
  86   virtual gles2::GLES2Implementation* GetImplementation() = 0;
  87
  88 #if defined(OS_ANDROID)
  89   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
  90       uint32 stream_id) = 0;
  91 #endif
  92 };
  93
  94 }  // namespace gpu
  95
  96 #endif  // GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_