src/gpu/command_buffer/service/texture_definition.cc

   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 #include "gpu/command_buffer/service/texture_definition.h"
   6
   7 #include <list>
   8
   9 #include "base/memory/linked_ptr.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/synchronization/lock.h"
  12 #include "gpu/command_buffer/service/texture_manager.h"
  13 #include "ui/gl/gl_image.h"
  14 #include "ui/gl/gl_implementation.h"
  15 #include "ui/gl/scoped_binders.h"
  16
  17 #if !defined(OS_MACOSX)
  18 #include "ui/gl/gl_fence_egl.h"
  19 #include "ui/gl/gl_surface_egl.h"
  20 #endif
  21
  22 namespace gpu {
  23 namespace gles2 {
  24
  25 namespace {
  26
  27 class GLImageSync : public gfx::GLImage {
  28  public:
  29   explicit GLImageSync(const scoped_refptr<NativeImageBuffer>& buffer,
  30                        const gfx::Size& size);
  31
  32   // Implement GLImage.
  33   virtual void Destroy(bool have_context) OVERRIDE;
  34   virtual gfx::Size GetSize() OVERRIDE;
  35   virtual bool BindTexImage(unsigned target) OVERRIDE;
  36   virtual void ReleaseTexImage(unsigned target) OVERRIDE;
  37   virtual void WillUseTexImage() OVERRIDE;
  38   virtual void WillModifyTexImage() OVERRIDE;
  39   virtual void DidModifyTexImage() OVERRIDE;
  40   virtual void DidUseTexImage() OVERRIDE;
  41   virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  42                                     int z_order,
  43                                     gfx::OverlayTransform transform,
  44                                     const gfx::Rect& bounds_rect,
  45                                     const gfx::RectF& crop_rect) OVERRIDE;
  46   virtual void SetReleaseAfterUse() OVERRIDE;
  47
  48  protected:
  49   virtual ~GLImageSync();
  50
  51  private:
  52   scoped_refptr<NativeImageBuffer> buffer_;
  53   gfx::Size size_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(GLImageSync);
  56 };
  57
  58 GLImageSync::GLImageSync(const scoped_refptr<NativeImageBuffer>& buffer,
  59                          const gfx::Size& size)
  60     : buffer_(buffer), size_(size) {
  61   if (buffer)
  62     buffer->AddClient(this);
  63 }
  64
  65 GLImageSync::~GLImageSync() {
  66   if (buffer_)
  67     buffer_->RemoveClient(this);
  68 }
  69
  70 void GLImageSync::Destroy(bool have_context) {
  71 }
  72
  73 gfx::Size GLImageSync::GetSize() {
  74   return size_;
  75 }
  76
  77 bool GLImageSync::BindTexImage(unsigned target) {
  78   NOTREACHED();
  79   return false;
  80 }
  81
  82 void GLImageSync::ReleaseTexImage(unsigned target) {
  83   NOTREACHED();
  84 }
  85
  86 void GLImageSync::WillUseTexImage() {
  87   if (buffer_)
  88     buffer_->WillRead(this);
  89 }
  90
  91 void GLImageSync::DidUseTexImage() {
  92   if (buffer_)
  93     buffer_->DidRead(this);
  94 }
  95
  96 void GLImageSync::WillModifyTexImage() {
  97   if (buffer_)
  98     buffer_->WillWrite(this);
  99 }
 100
 101 void GLImageSync::DidModifyTexImage() {
 102   if (buffer_)
 103     buffer_->DidWrite(this);
 104 }
 105
 106 bool GLImageSync::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
 107                                        int z_order,
 108                                        gfx::OverlayTransform transform,
 109                                        const gfx::Rect& bounds_rect,
 110                                        const gfx::RectF& crop_rect) {
 111   NOTREACHED();
 112   return false;
 113 }
 114
 115 void GLImageSync::SetReleaseAfterUse() {
 116   NOTREACHED();
 117 }
 118
 119 #if !defined(OS_MACOSX)
 120 class NativeImageBufferEGL : public NativeImageBuffer {
 121  public:
 122   static scoped_refptr<NativeImageBufferEGL> Create(GLuint texture_id);
 123
 124  private:
 125   NativeImageBufferEGL(EGLDisplay display, EGLImageKHR image);
 126   virtual ~NativeImageBufferEGL();
 127   virtual void AddClient(gfx::GLImage* client) OVERRIDE;
 128   virtual void RemoveClient(gfx::GLImage* client) OVERRIDE;
 129   virtual bool IsClient(gfx::GLImage* client) OVERRIDE;
 130   virtual void BindToTexture(GLenum target) OVERRIDE;
 131   virtual void WillRead(gfx::GLImage* client) OVERRIDE;
 132   virtual void WillWrite(gfx::GLImage* client) OVERRIDE;
 133   virtual void DidRead(gfx::GLImage* client) OVERRIDE;
 134   virtual void DidWrite(gfx::GLImage* client) OVERRIDE;
 135
 136   EGLDisplay egl_display_;
 137   EGLImageKHR egl_image_;
 138
 139   base::Lock lock_;
 140
 141   struct ClientInfo {
 142     ClientInfo(gfx::GLImage* client);
 143     ~ClientInfo();
 144
 145     gfx::GLImage* client;
 146     bool needs_wait_before_read;
 147     linked_ptr<gfx::GLFence> read_fence;
 148   };
 149   std::list<ClientInfo> client_infos_;
 150   scoped_ptr<gfx::GLFence> write_fence_;
 151   gfx::GLImage* write_client_;
 152
 153   DISALLOW_COPY_AND_ASSIGN(NativeImageBufferEGL);
 154 };
 155
 156 scoped_refptr<NativeImageBufferEGL> NativeImageBufferEGL::Create(
 157     GLuint texture_id) {
 158   EGLDisplay egl_display = gfx::GLSurfaceEGL::GetHardwareDisplay();
 159   EGLContext egl_context = eglGetCurrentContext();
 160
 161   DCHECK_NE(EGL_NO_CONTEXT, egl_context);
 162   DCHECK_NE(EGL_NO_DISPLAY, egl_display);
 163   DCHECK(glIsTexture(texture_id));
 164
 165   DCHECK(gfx::g_driver_egl.ext.b_EGL_KHR_image_base &&
 166          gfx::g_driver_egl.ext.b_EGL_KHR_gl_texture_2D_image &&
 167          gfx::g_driver_gl.ext.b_GL_OES_EGL_image &&
 168          gfx::g_driver_egl.ext.b_EGL_KHR_fence_sync);
 169
 170   const EGLint egl_attrib_list[] = {
 171       EGL_GL_TEXTURE_LEVEL_KHR, 0, EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE};
 172   EGLClientBuffer egl_buffer = reinterpret_cast<EGLClientBuffer>(texture_id);
 173   EGLenum egl_target = EGL_GL_TEXTURE_2D_KHR; // TODO
 174
 175   EGLImageKHR egl_image = eglCreateImageKHR(
 176       egl_display, egl_context, egl_target, egl_buffer, egl_attrib_list);
 177
 178   if (egl_image == EGL_NO_IMAGE_KHR)
 179     return NULL;
 180
 181   return new NativeImageBufferEGL(egl_display, egl_image);
 182 }
 183
 184 NativeImageBufferEGL::ClientInfo::ClientInfo(gfx::GLImage* client)
 185     : client(client), needs_wait_before_read(true) {}
 186
 187 NativeImageBufferEGL::ClientInfo::~ClientInfo() {}
 188
 189 NativeImageBufferEGL::NativeImageBufferEGL(EGLDisplay display,
 190                                            EGLImageKHR image)
 191     : NativeImageBuffer(),
 192       egl_display_(display),
 193       egl_image_(image),
 194       write_fence_(new gfx::GLFenceEGL(true)),
 195       write_client_(NULL) {
 196   DCHECK(egl_display_ != EGL_NO_DISPLAY);
 197   DCHECK(egl_image_ != EGL_NO_IMAGE_KHR);
 198 }
 199
 200 NativeImageBufferEGL::~NativeImageBufferEGL() {
 201   DCHECK(client_infos_.empty());
 202   if (egl_image_ != EGL_NO_IMAGE_KHR)
 203     eglDestroyImageKHR(egl_display_, egl_image_);
 204 }
 205
 206 void NativeImageBufferEGL::AddClient(gfx::GLImage* client) {
 207   base::AutoLock lock(lock_);
 208   client_infos_.push_back(ClientInfo(client));
 209 }
 210
 211 void NativeImageBufferEGL::RemoveClient(gfx::GLImage* client) {
 212   base::AutoLock lock(lock_);
 213   if (write_client_ == client)
 214     write_client_ = NULL;
 215   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 216        it != client_infos_.end();
 217        it++) {
 218     if (it->client == client) {
 219       client_infos_.erase(it);
 220       return;
 221     }
 222   }
 223   NOTREACHED();
 224 }
 225
 226 bool NativeImageBufferEGL::IsClient(gfx::GLImage* client) {
 227   base::AutoLock lock(lock_);
 228   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 229        it != client_infos_.end();
 230        it++) {
 231     if (it->client == client)
 232       return true;
 233   }
 234   return false;
 235 }
 236
 237 void NativeImageBufferEGL::BindToTexture(GLenum target) {
 238   DCHECK(egl_image_ != EGL_NO_IMAGE_KHR);
 239   glEGLImageTargetTexture2DOES(target, egl_image_);
 240   DCHECK_EQ(static_cast<EGLint>(EGL_SUCCESS), eglGetError());
 241   DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
 242 }
 243
 244 void NativeImageBufferEGL::WillRead(gfx::GLImage* client) {
 245   base::AutoLock lock(lock_);
 246   if (!write_fence_.get() || write_client_ == client)
 247     return;
 248
 249   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 250        it != client_infos_.end();
 251        it++) {
 252     if (it->client == client) {
 253       if (it->needs_wait_before_read) {
 254         it->needs_wait_before_read = false;
 255         write_fence_->ServerWait();
 256       }
 257       return;
 258     }
 259   }
 260   NOTREACHED();
 261 }
 262
 263 void NativeImageBufferEGL::WillWrite(gfx::GLImage* client) {
 264   base::AutoLock lock(lock_);
 265   if (write_client_ != client)
 266     write_fence_->ServerWait();
 267
 268   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 269        it != client_infos_.end();
 270        it++) {
 271     if (it->read_fence.get() && it->client != client)
 272       it->read_fence->ServerWait();
 273   }
 274 }
 275
 276 void NativeImageBufferEGL::DidRead(gfx::GLImage* client) {
 277   base::AutoLock lock(lock_);
 278   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 279        it != client_infos_.end();
 280        it++) {
 281     if (it->client == client) {
 282       it->read_fence = make_linked_ptr(new gfx::GLFenceEGL(true));
 283       return;
 284     }
 285   }
 286   NOTREACHED();
 287 }
 288
 289 void NativeImageBufferEGL::DidWrite(gfx::GLImage* client) {
 290   base::AutoLock lock(lock_);
 291   // Sharing semantics require the client to flush in order to make changes
 292   // visible to other clients.
 293   write_fence_.reset(new gfx::GLFenceEGL(false));
 294   write_client_ = client;
 295   for (std::list<ClientInfo>::iterator it = client_infos_.begin();
 296        it != client_infos_.end();
 297        it++) {
 298     it->needs_wait_before_read = true;
 299   }
 300 }
 301
 302 #endif
 303
 304 class NativeImageBufferStub : public NativeImageBuffer {
 305  public:
 306   NativeImageBufferStub() : NativeImageBuffer() {}
 307
 308  private:
 309   virtual ~NativeImageBufferStub() {}
 310   virtual void AddClient(gfx::GLImage* client) OVERRIDE {}
 311   virtual void RemoveClient(gfx::GLImage* client) OVERRIDE {}
 312   virtual bool IsClient(gfx::GLImage* client) OVERRIDE { return true; }
 313   virtual void BindToTexture(GLenum target) OVERRIDE {}
 314   virtual void WillRead(gfx::GLImage* client) OVERRIDE {}
 315   virtual void WillWrite(gfx::GLImage* client) OVERRIDE {}
 316   virtual void DidRead(gfx::GLImage* client) OVERRIDE {}
 317   virtual void DidWrite(gfx::GLImage* client) OVERRIDE {}
 318
 319   DISALLOW_COPY_AND_ASSIGN(NativeImageBufferStub);
 320 };
 321
 322 }  // anonymous namespace
 323
 324 // static
 325 scoped_refptr<NativeImageBuffer> NativeImageBuffer::Create(GLuint texture_id) {
 326   switch (gfx::GetGLImplementation()) {
 327 #if !defined(OS_MACOSX)
 328     case gfx::kGLImplementationEGLGLES2:
 329       return NativeImageBufferEGL::Create(texture_id);
 330 #endif
 331     case gfx::kGLImplementationMockGL:
 332       return new NativeImageBufferStub;
 333     default:
 334       NOTREACHED();
 335       return NULL;
 336   }
 337 }
 338
 339 TextureDefinition::LevelInfo::LevelInfo(GLenum target,
 340                                         GLenum internal_format,
 341                                         GLsizei width,
 342                                         GLsizei height,
 343                                         GLsizei depth,
 344                                         GLint border,
 345                                         GLenum format,
 346                                         GLenum type,
 347                                         bool cleared)
 348     : target(target),
 349       internal_format(internal_format),
 350       width(width),
 351       height(height),
 352       depth(depth),
 353       border(border),
 354       format(format),
 355       type(type),
 356       cleared(cleared) {}
 357
 358 TextureDefinition::LevelInfo::~LevelInfo() {}
 359
 360 TextureDefinition::TextureDefinition(
 361     GLenum target,
 362     Texture* texture,
 363     unsigned int version,
 364     const scoped_refptr<NativeImageBuffer>& image_buffer)
 365     : version_(version),
 366       target_(target),
 367       image_buffer_(image_buffer ? image_buffer : NativeImageBuffer::Create(
 368                                                       texture->service_id())),
 369       min_filter_(texture->min_filter()),
 370       mag_filter_(texture->mag_filter()),
 371       wrap_s_(texture->wrap_s()),
 372       wrap_t_(texture->wrap_t()),
 373       usage_(texture->usage()),
 374       immutable_(texture->IsImmutable()) {
 375
 376   // TODO
 377   DCHECK(!texture->level_infos_.empty());
 378   DCHECK(!texture->level_infos_[0].empty());
 379   DCHECK(!texture->NeedsMips());
 380   DCHECK(texture->level_infos_[0][0].width);
 381   DCHECK(texture->level_infos_[0][0].height);
 382
 383   scoped_refptr<gfx::GLImage> gl_image(
 384       new GLImageSync(image_buffer_,
 385                       gfx::Size(texture->level_infos_[0][0].width,
 386                                 texture->level_infos_[0][0].height)));
 387   texture->SetLevelImage(NULL, target, 0, gl_image);
 388
 389   // TODO: all levels
 390   level_infos_.clear();
 391   const Texture::LevelInfo& level = texture->level_infos_[0][0];
 392   LevelInfo info(level.target,
 393                  level.internal_format,
 394                  level.width,
 395                  level.height,
 396                  level.depth,
 397                  level.border,
 398                  level.format,
 399                  level.type,
 400                  level.cleared);
 401   std::vector<LevelInfo> infos;
 402   infos.push_back(info);
 403   level_infos_.push_back(infos);
 404 }
 405
 406 TextureDefinition::~TextureDefinition() {
 407 }
 408
 409 Texture* TextureDefinition::CreateTexture() const {
 410   if (!image_buffer_)
 411     return NULL;
 412
 413   GLuint texture_id;
 414   glGenTextures(1, &texture_id);
 415
 416   Texture* texture(new Texture(texture_id));
 417   UpdateTexture(texture);
 418
 419   return texture;
 420 }
 421
 422 void TextureDefinition::UpdateTexture(Texture* texture) const {
 423   gfx::ScopedTextureBinder texture_binder(target_, texture->service_id());
 424   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter_);
 425   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter_);
 426   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap_s_);
 427   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap_t_);
 428   if (image_buffer_)
 429     image_buffer_->BindToTexture(target_);
 430   // We have to make sure the changes are visible to other clients in this share
 431   // group. As far as the clients are concerned, the mailbox semantics only
 432   // demand a single flush from the client after changes are first made,
 433   // and it is not visible to them when another share group boundary is crossed.
 434   // We could probably track this and be a bit smarter about when to flush
 435   // though.
 436   glFlush();
 437
 438   texture->level_infos_.resize(1);
 439   for (size_t i = 0; i < level_infos_.size(); i++) {
 440     const LevelInfo& base_info = level_infos_[i][0];
 441     const size_t levels_needed = TextureManager::ComputeMipMapCount(
 442         base_info.target, base_info.width, base_info.height, base_info.depth);
 443     DCHECK(level_infos_.size() <= levels_needed);
 444     texture->level_infos_[0].resize(levels_needed);
 445     for (size_t n = 0; n < level_infos_.size(); n++) {
 446       const LevelInfo& info = level_infos_[i][n];
 447       texture->SetLevelInfo(NULL,
 448                             info.target,
 449                             i,
 450                             info.internal_format,
 451                             info.width,
 452                             info.height,
 453                             info.depth,
 454                             info.border,
 455                             info.format,
 456                             info.type,
 457                             info.cleared);
 458     }
 459   }
 460   if (image_buffer_) {
 461     texture->SetLevelImage(
 462         NULL,
 463         target_,
 464         0,
 465         new GLImageSync(
 466             image_buffer_,
 467             gfx::Size(level_infos_[0][0].width, level_infos_[0][0].height)));
 468   }
 469
 470   texture->target_ = target_;
 471   texture->SetImmutable(immutable_);
 472   texture->min_filter_ = min_filter_;
 473   texture->mag_filter_ = mag_filter_;
 474   texture->wrap_s_ = wrap_s_;
 475   texture->wrap_t_ = wrap_t_;
 476   texture->usage_ = usage_;
 477 }
 478
 479 bool TextureDefinition::Matches(const Texture* texture) const {
 480   DCHECK(target_ == texture->target());
 481   if (texture->min_filter_ != min_filter_ ||
 482       texture->mag_filter_ != mag_filter_ ||
 483       texture->wrap_s_ != wrap_s_ ||
 484       texture->wrap_t_ != wrap_t_) {
 485     return false;
 486   }
 487
 488   // All structural changes should have orphaned the texture.
 489   if (image_buffer_ && !texture->GetLevelImage(texture->target(), 0))
 490     return false;
 491
 492   return true;
 493 }
 494
 495 }  // namespace gles2
 496 }  // namespace gpu