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 // This file contains the GLES2Decoder class. 6 7 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_ 8 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_ 9 10 #include <vector> 11 12 #include "base/callback.h" 13 #include "base/memory/weak_ptr.h" 14 #include "base/time/time.h" 15 #include "build/build_config.h" 16 #include "gpu/command_buffer/common/capabilities.h" 17 #include "gpu/command_buffer/service/common_decoder.h" 18 #include "gpu/command_buffer/service/logger.h" 19 #include "ui/gfx/size.h" 20 #include "ui/gl/gl_context.h" 21 22 namespace gfx { 23 class GLContext; 24 class GLSurface; 25 } 26 27 namespace gpu { 28 29 class AsyncPixelTransferDelegate; 30 class AsyncPixelTransferManager; 31 struct Mailbox; 32 33 namespace gles2 { 34 35 class ContextGroup; 36 class ErrorState; 37 class GLES2Util; 38 class Logger; 39 class QueryManager; 40 class VertexArrayManager; 41 struct ContextState; 42 43 struct DisallowedFeatures { DisallowedFeaturesDisallowedFeatures44 DisallowedFeatures() 45 : gpu_memory_manager(false) { 46 } 47 48 bool gpu_memory_manager; 49 }; 50 51 typedef base::Callback<void(const std::string& key, 52 const std::string& shader)> ShaderCacheCallback; 53 54 // This class implements the AsyncAPIInterface interface, decoding GLES2 55 // commands and calling GL. 56 class GPU_EXPORT GLES2Decoder : public base::SupportsWeakPtr<GLES2Decoder>, 57 public CommonDecoder { 58 public: 59 typedef error::Error Error; 60 typedef base::Callback<bool(uint32 id)> WaitSyncPointCallback; 61 62 // Creates a decoder. 63 static GLES2Decoder* Create(ContextGroup* group); 64 65 virtual ~GLES2Decoder(); 66 initialized()67 bool initialized() const { 68 return initialized_; 69 } 70 set_initialized()71 void set_initialized() { 72 initialized_ = true; 73 } 74 debug()75 bool debug() const { 76 return debug_; 77 } 78 79 // Set to true to call glGetError after every command. set_debug(bool debug)80 void set_debug(bool debug) { 81 debug_ = debug; 82 } 83 log_commands()84 bool log_commands() const { 85 return log_commands_; 86 } 87 88 // Set to true to LOG every command. set_log_commands(bool log_commands)89 void set_log_commands(bool log_commands) { 90 log_commands_ = log_commands; 91 } 92 93 // Initializes the graphics context. Can create an offscreen 94 // decoder with a frame buffer that can be referenced from the parent. 95 // Takes ownership of GLContext. 96 // Parameters: 97 // surface: the GL surface to render to. 98 // context: the GL context to render to. 99 // offscreen: whether to make the context offscreen or not. When FBO 0 is 100 // bound, offscreen contexts render to an internal buffer, onscreen ones 101 // to the surface. 102 // size: the size if the GL context is offscreen. 103 // Returns: 104 // true if successful. 105 virtual bool Initialize(const scoped_refptr<gfx::GLSurface>& surface, 106 const scoped_refptr<gfx::GLContext>& context, 107 bool offscreen, 108 const gfx::Size& size, 109 const DisallowedFeatures& disallowed_features, 110 const std::vector<int32>& attribs) = 0; 111 112 // Destroys the graphics context. 113 virtual void Destroy(bool have_context) = 0; 114 115 // Set the surface associated with the default FBO. 116 virtual void SetSurface(const scoped_refptr<gfx::GLSurface>& surface) = 0; 117 118 virtual void ProduceFrontBuffer(const Mailbox& mailbox) = 0; 119 120 // Resize an offscreen frame buffer. 121 virtual bool ResizeOffscreenFrameBuffer(const gfx::Size& size) = 0; 122 123 // Make this decoder's GL context current. 124 virtual bool MakeCurrent() = 0; 125 126 // Gets the GLES2 Util which holds info. 127 virtual GLES2Util* GetGLES2Util() = 0; 128 129 // Gets the associated GLContext. 130 virtual gfx::GLContext* GetGLContext() = 0; 131 132 // Gets the associated ContextGroup 133 virtual ContextGroup* GetContextGroup() = 0; 134 135 virtual Capabilities GetCapabilities() = 0; 136 137 // Restores all of the decoder GL state. 138 virtual void RestoreState(const ContextState* prev_state) const = 0; 139 140 // Restore States. 141 virtual void RestoreActiveTexture() const = 0; 142 virtual void RestoreAllTextureUnitBindings( 143 const ContextState* prev_state) const = 0; 144 virtual void RestoreActiveTextureUnitBinding(unsigned int target) const = 0; 145 virtual void RestoreBufferBindings() const = 0; 146 virtual void RestoreFramebufferBindings() const = 0; 147 virtual void RestoreGlobalState() const = 0; 148 virtual void RestoreProgramBindings() const = 0; 149 virtual void RestoreTextureState(unsigned service_id) const = 0; 150 virtual void RestoreTextureUnitBindings(unsigned unit) const = 0; 151 152 virtual void ClearAllAttributes() const = 0; 153 virtual void RestoreAllAttributes() const = 0; 154 155 virtual void SetIgnoreCachedStateForTest(bool ignore) = 0; 156 157 // Gets the QueryManager for this context. 158 virtual QueryManager* GetQueryManager() = 0; 159 160 // Gets the VertexArrayManager for this context. 161 virtual VertexArrayManager* GetVertexArrayManager() = 0; 162 163 // Process any pending queries. Returns false if there are no pending queries. 164 virtual bool ProcessPendingQueries() = 0; 165 166 // Returns false if there are no idle work to be made. 167 virtual bool HasMoreIdleWork() = 0; 168 169 virtual void PerformIdleWork() = 0; 170 171 // Sets a callback which is called when a glResizeCHROMIUM command 172 // is processed. 173 virtual void SetResizeCallback( 174 const base::Callback<void(gfx::Size, float)>& callback) = 0; 175 176 // Interface to performing async pixel transfers. 177 virtual AsyncPixelTransferManager* GetAsyncPixelTransferManager() = 0; 178 virtual void ResetAsyncPixelTransferManagerForTest() = 0; 179 virtual void SetAsyncPixelTransferManagerForTest( 180 AsyncPixelTransferManager* manager) = 0; 181 182 // Get the service texture ID corresponding to a client texture ID. 183 // If no such record is found then return false. 184 virtual bool GetServiceTextureId(uint32 client_texture_id, 185 uint32* service_texture_id); 186 187 // Provides detail about a lost context if one occurred. 188 virtual error::ContextLostReason GetContextLostReason() = 0; 189 190 // Clears a level of a texture 191 // Returns false if a GL error should be generated. 192 virtual bool ClearLevel( 193 unsigned service_id, 194 unsigned bind_target, 195 unsigned target, 196 int level, 197 unsigned internal_format, 198 unsigned format, 199 unsigned type, 200 int width, 201 int height, 202 bool is_texture_immutable) = 0; 203 204 virtual ErrorState* GetErrorState() = 0; 205 206 // A callback for messages from the decoder. 207 virtual void SetShaderCacheCallback(const ShaderCacheCallback& callback) = 0; 208 209 // Sets the callback for waiting on a sync point. The callback returns the 210 // scheduling status (i.e. true if the channel is still scheduled). 211 virtual void SetWaitSyncPointCallback( 212 const WaitSyncPointCallback& callback) = 0; 213 214 virtual void WaitForReadPixels(base::Closure callback) = 0; 215 virtual uint32 GetTextureUploadCount() = 0; 216 virtual base::TimeDelta GetTotalTextureUploadTime() = 0; 217 virtual base::TimeDelta GetTotalProcessingCommandsTime() = 0; 218 virtual void AddProcessingCommandsTime(base::TimeDelta) = 0; 219 220 // Returns true if the context was lost either by GL_ARB_robustness, forced 221 // context loss or command buffer parse error. 222 virtual bool WasContextLost() = 0; 223 224 // Returns true if the context was lost specifically by GL_ARB_robustness. 225 virtual bool WasContextLostByRobustnessExtension() = 0; 226 227 // Lose this context. 228 virtual void LoseContext(uint32 reset_status) = 0; 229 230 virtual Logger* GetLogger() = 0; 231 232 virtual void BeginDecoding(); 233 virtual void EndDecoding(); 234 235 virtual const ContextState* GetContextState() = 0; 236 237 protected: 238 GLES2Decoder(); 239 240 private: 241 bool initialized_; 242 bool debug_; 243 bool log_commands_; 244 245 DISALLOW_COPY_AND_ASSIGN(GLES2Decoder); 246 }; 247 248 } // namespace gles2 249 } // namespace gpu 250 251 #endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_ 252