gpu/command_buffer/service/context_group.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_SERVICE_CONTEXT_GROUP_H_
   6 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_
   7
   8 #include <string>
   9 #include <vector>
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "gpu/command_buffer/common/gles2_cmd_format.h"
  17 #include "gpu/command_buffer/service/feature_info.h"
  18 #include "gpu/command_buffer/service/gles2_cmd_validation.h"
  19 #include "gpu/command_buffer/service/shader_translator_cache.h"
  20 #include "gpu/gpu_export.h"
  21
  22 namespace gpu {
  23
  24 class TransferBufferManagerInterface;
  25 class ValueStateMap;
  26
  27 namespace gles2 {
  28
  29 class ProgramCache;
  30 class BufferManager;
  31 class GLES2Decoder;
  32 class FramebufferManager;
  33 class MailboxManager;
  34 class RenderbufferManager;
  35 class PathManager;
  36 class ProgramManager;
  37 class ShaderManager;
  38 class TextureManager;
  39 class SubscriptionRefSet;
  40 class ValuebufferManager;
  41 class MemoryTracker;
  42 struct DisallowedFeatures;
  43
  44 // A Context Group helps manage multiple GLES2Decoders that share
  45 // resources.
  46 class GPU_EXPORT ContextGroup : public base::RefCounted<ContextGroup> {
  47  public:
  48   enum ContextType {
  49     CONTEXT_TYPE_WEBGL1,
  50     CONTEXT_TYPE_WEBGL2,
  51     CONTEXT_TYPE_OTHER,
  52     CONTEXT_TYPE_UNDEFINED
  53   };
  54
  55   static ContextType GetContextType(unsigned webgl_version);
  56
  57   ContextGroup(
  58       const scoped_refptr<MailboxManager>& mailbox_manager,
  59       const scoped_refptr<MemoryTracker>& memory_tracker,
  60       const scoped_refptr<ShaderTranslatorCache>& shader_translator_cache,
  61       const scoped_refptr<FeatureInfo>& feature_info,
  62       const scoped_refptr<SubscriptionRefSet>& subscription_ref_set,
  63       const scoped_refptr<ValueStateMap>& pending_valuebuffer_state,
  64       bool bind_generates_resource);
  65
  66   // This should only be called by GLES2Decoder. This must be paired with a
  67   // call to destroy if it succeeds.
  68   bool Initialize(
  69       GLES2Decoder* decoder,
  70       ContextType context_type,
  71       const DisallowedFeatures& disallowed_features);
  72
  73   // Destroys all the resources when called for the last context in the group.
  74   // It should only be called by GLES2Decoder.
  75   void Destroy(GLES2Decoder* decoder, bool have_context);
  76
  77   MailboxManager* mailbox_manager() const {
  78     return mailbox_manager_.get();
  79   }
  80
  81   MemoryTracker* memory_tracker() const {
  82     return memory_tracker_.get();
  83   }
  84
  85   ShaderTranslatorCache* shader_translator_cache() const {
  86     return shader_translator_cache_.get();
  87   }
  88
  89   bool bind_generates_resource() {
  90     return bind_generates_resource_;
  91   }
  92
  93   uint32 max_vertex_attribs() const {
  94     return max_vertex_attribs_;
  95   }
  96
  97   uint32 max_texture_units() const {
  98     return max_texture_units_;
  99   }
 100
 101   uint32 max_texture_image_units() const {
 102     return max_texture_image_units_;
 103   }
 104
 105   uint32 max_vertex_texture_image_units() const {
 106     return max_vertex_texture_image_units_;
 107   }
 108
 109   uint32 max_fragment_uniform_vectors() const {
 110     return max_fragment_uniform_vectors_;
 111   }
 112
 113   uint32 max_varying_vectors() const {
 114     return max_varying_vectors_;
 115   }
 116
 117   uint32 max_vertex_uniform_vectors() const {
 118     return max_vertex_uniform_vectors_;
 119   }
 120
 121   uint32 max_color_attachments() const {
 122     return max_color_attachments_;
 123   }
 124
 125   uint32 max_draw_buffers() const {
 126     return max_draw_buffers_;
 127   }
 128
 129   FeatureInfo* feature_info() {
 130     return feature_info_.get();
 131   }
 132
 133   BufferManager* buffer_manager() const {
 134     return buffer_manager_.get();
 135   }
 136
 137   FramebufferManager* framebuffer_manager() const {
 138     return framebuffer_manager_.get();
 139   }
 140
 141   RenderbufferManager* renderbuffer_manager() const {
 142     return renderbuffer_manager_.get();
 143   }
 144
 145   ValuebufferManager* valuebuffer_manager() const {
 146     return valuebuffer_manager_.get();
 147   }
 148
 149   ValueStateMap* pending_valuebuffer_state() const {
 150     return pending_valuebuffer_state_.get();
 151   }
 152
 153   TextureManager* texture_manager() const {
 154     return texture_manager_.get();
 155   }
 156
 157   PathManager* path_manager() const { return path_manager_.get(); }
 158
 159   ProgramManager* program_manager() const {
 160     return program_manager_.get();
 161   }
 162
 163   bool has_program_cache() const {
 164     return program_cache_ != NULL;
 165   }
 166
 167   void set_program_cache(ProgramCache* program_cache) {
 168     program_cache_ = program_cache;
 169   }
 170
 171   ShaderManager* shader_manager() const {
 172     return shader_manager_.get();
 173   }
 174
 175   TransferBufferManagerInterface* transfer_buffer_manager() const {
 176     return transfer_buffer_manager_.get();
 177   }
 178
 179   uint32 GetMemRepresented() const;
 180
 181   // Loses all the context associated with this group.
 182   void LoseContexts(error::ContextLostReason reason);
 183
 184   // EXT_draw_buffer related states for backbuffer.
 185   GLenum draw_buffer() const {
 186     return draw_buffer_;
 187   }
 188   void set_draw_buffer(GLenum buf) {
 189     draw_buffer_ = buf;
 190   }
 191
 192   bool GetBufferServiceId(GLuint client_id, GLuint* service_id) const;
 193
 194   void AddSamplerId(GLuint client_id, GLuint service_id) {
 195     samplers_id_map_[client_id] = service_id;
 196   }
 197
 198   bool GetSamplerServiceId(GLuint client_id, GLuint* service_id) const {
 199     base::hash_map<GLuint, GLuint>::const_iterator iter =
 200         samplers_id_map_.find(client_id);
 201     if (iter == samplers_id_map_.end())
 202       return false;
 203     if (service_id)
 204       *service_id = iter->second;
 205     return true;
 206   }
 207
 208   void RemoveSamplerId(GLuint client_id) {
 209     samplers_id_map_.erase(client_id);
 210   }
 211
 212   void AddTransformFeedbackId(GLuint client_id, GLuint service_id) {
 213     transformfeedbacks_id_map_[client_id] = service_id;
 214   }
 215
 216   bool GetTransformFeedbackServiceId(
 217       GLuint client_id, GLuint* service_id) const {
 218     if (client_id == 0) {
 219       // Default one.
 220       if (service_id)
 221         *service_id = 0;
 222       return true;
 223     }
 224     base::hash_map<GLuint, GLuint>::const_iterator iter =
 225         transformfeedbacks_id_map_.find(client_id);
 226     if (iter == transformfeedbacks_id_map_.end())
 227       return false;
 228     if (service_id)
 229       *service_id = iter->second;
 230     return true;
 231   }
 232
 233   void RemoveTransformFeedbackId(GLuint client_id) {
 234     transformfeedbacks_id_map_.erase(client_id);
 235   }
 236
 237   void AddSyncId(GLuint client_id, GLsync service_id) {
 238     syncs_id_map_[client_id] = service_id;
 239   }
 240
 241   bool GetSyncServiceId(GLuint client_id, GLsync* service_id) const {
 242     base::hash_map<GLuint, GLsync>::const_iterator iter =
 243         syncs_id_map_.find(client_id);
 244     if (iter == syncs_id_map_.end())
 245       return false;
 246     if (service_id)
 247       *service_id = iter->second;
 248     return true;
 249   }
 250
 251   void RemoveSyncId(GLuint client_id) {
 252     syncs_id_map_.erase(client_id);
 253   }
 254
 255  private:
 256   friend class base::RefCounted<ContextGroup>;
 257   ~ContextGroup();
 258
 259   bool CheckGLFeature(GLint min_required, GLint* v);
 260   bool CheckGLFeatureU(GLint min_required, uint32* v);
 261   bool QueryGLFeature(GLenum pname, GLint min_required, GLint* v);
 262   bool QueryGLFeatureU(GLenum pname, GLint min_required, uint32* v);
 263   bool HaveContexts();
 264
 265   ContextType context_type_;
 266
 267   scoped_refptr<MailboxManager> mailbox_manager_;
 268   scoped_refptr<MemoryTracker> memory_tracker_;
 269   scoped_refptr<ShaderTranslatorCache> shader_translator_cache_;
 270   scoped_refptr<TransferBufferManagerInterface> transfer_buffer_manager_;
 271   scoped_refptr<SubscriptionRefSet> subscription_ref_set_;
 272   scoped_refptr<ValueStateMap> pending_valuebuffer_state_;
 273
 274   bool enforce_gl_minimums_;
 275   bool bind_generates_resource_;
 276
 277   uint32 max_vertex_attribs_;
 278   uint32 max_texture_units_;
 279   uint32 max_texture_image_units_;
 280   uint32 max_vertex_texture_image_units_;
 281   uint32 max_fragment_uniform_vectors_;
 282   uint32 max_varying_vectors_;
 283   uint32 max_vertex_uniform_vectors_;
 284   uint32 max_color_attachments_;
 285   uint32 max_draw_buffers_;
 286
 287   ProgramCache* program_cache_;
 288
 289   scoped_ptr<BufferManager> buffer_manager_;
 290
 291   scoped_ptr<FramebufferManager> framebuffer_manager_;
 292
 293   scoped_ptr<RenderbufferManager> renderbuffer_manager_;
 294
 295   scoped_ptr<TextureManager> texture_manager_;
 296
 297   scoped_ptr<PathManager> path_manager_;
 298
 299   scoped_ptr<ProgramManager> program_manager_;
 300
 301   scoped_ptr<ShaderManager> shader_manager_;
 302
 303   scoped_ptr<ValuebufferManager> valuebuffer_manager_;
 304
 305   scoped_refptr<FeatureInfo> feature_info_;
 306
 307   std::vector<base::WeakPtr<gles2::GLES2Decoder> > decoders_;
 308
 309   // Mappings from client side IDs to service side IDs.
 310   base::hash_map<GLuint, GLuint> samplers_id_map_;
 311   base::hash_map<GLuint, GLuint> transformfeedbacks_id_map_;
 312   base::hash_map<GLuint, GLsync> syncs_id_map_;
 313
 314   GLenum draw_buffer_;
 315
 316   DISALLOW_COPY_AND_ASSIGN(ContextGroup);
 317 };
 318
 319 }  // namespace gles2
 320 }  // namespace gpu
 321
 322 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_
 323
 324