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