gpu/command_buffer/client/gpu_control.h

   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 #ifndef GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_
   6 #define GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_
   7
   8 #include <stdint.h>
   9
  10 #include <vector>
  11
  12 #include "base/callback.h"
  13 #include "base/macros.h"
  14 #include "gpu/command_buffer/common/capabilities.h"
  15 #include "gpu/command_buffer/common/mailbox.h"
  16 #include "gpu/gpu_export.h"
  17
  18 namespace gfx {
  19 class GpuMemoryBuffer;
  20 }
  21
  22 namespace gpu {
  23
  24 // Common interface for GpuControl implementations.
  25 class GPU_EXPORT GpuControl {
  26  public:
  27   GpuControl() {}
  28   virtual ~GpuControl() {}
  29
  30   virtual Capabilities GetCapabilities() = 0;
  31
  32   // Create a gpu memory buffer of the given dimensions and format. Returns
  33   // its ID or -1 on error.
  34   virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
  35       size_t width,
  36       size_t height,
  37       unsigned internalformat,
  38       unsigned usage,
  39       int32_t* id) = 0;
  40
  41   // Destroy a gpu memory buffer. The ID must be positive.
  42   virtual void DestroyGpuMemoryBuffer(int32_t id) = 0;
  43
  44   // Inserts a sync point, returning its ID. Sync point IDs are global and can
  45   // be used for cross-context synchronization.
  46   virtual uint32_t InsertSyncPoint() = 0;
  47
  48   // Inserts a future sync point, returning its ID. Sync point IDs are global
  49   // and can be used for cross-context synchronization. The sync point won't be
  50   // retired immediately.
  51   virtual uint32_t InsertFutureSyncPoint() = 0;
  52
  53   // Retires a future sync point. This will signal contexts that are waiting
  54   // on it to start executing.
  55   virtual void RetireSyncPoint(uint32_t sync_point) = 0;
  56
  57   // Runs |callback| when a sync point is reached.
  58   virtual void SignalSyncPoint(uint32_t sync_point,
  59                                const base::Closure& callback) = 0;
  60
  61   // Runs |callback| when a query created via glCreateQueryEXT() has cleared
  62   // passed the glEndQueryEXT() point.
  63   virtual void SignalQuery(uint32_t query, const base::Closure& callback) = 0;
  64
  65   virtual void SetSurfaceVisible(bool visible) = 0;
  66
  67   // Invokes the callback once the context has been flushed.
  68   virtual void Echo(const base::Closure& callback) = 0;
  69
  70   // Attaches an external stream to the texture given by |texture_id| and
  71   // returns a stream identifier.
  72   virtual uint32_t CreateStreamTexture(uint32_t texture_id) = 0;
  73
  74  private:
  75   DISALLOW_COPY_AND_ASSIGN(GpuControl);
  76 };
  77
  78 }  // namespace gpu
  79
  80 #endif  // GPU_COMMAND_BUFFER_CLIENT_GPU_CONTROL_H_