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| 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 #include "components/display_compositor/gl_helper.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 #include <queue> | |
| 11 #include <string> | |
| 12 | |
| 13 #include "base/bind.h" | |
| 14 #include "base/lazy_instance.h" | |
| 15 #include "base/logging.h" | |
| 16 #include "base/macros.h" | |
| 17 #include "base/memory/ref_counted.h" | |
| 18 #include "base/message_loop/message_loop.h" | |
| 19 #include "base/strings/string_util.h" | |
| 20 #include "base/time/time.h" | |
| 21 #include "base/trace_event/trace_event.h" | |
| 22 #include "components/display_compositor/gl_helper_readback_support.h" | |
| 23 #include "components/display_compositor/gl_helper_scaling.h" | |
| 24 #include "gpu/GLES2/gl2extchromium.h" | |
| 25 #include "gpu/command_buffer/client/context_support.h" | |
| 26 #include "gpu/command_buffer/common/mailbox.h" | |
| 27 #include "gpu/command_buffer/common/mailbox_holder.h" | |
| 28 #include "third_party/skia/include/core/SkRegion.h" | |
| 29 #include "ui/gfx/geometry/point.h" | |
| 30 #include "ui/gfx/geometry/rect.h" | |
| 31 #include "ui/gfx/geometry/size.h" | |
| 32 | |
| 33 using gpu::gles2::GLES2Interface; | |
| 34 | |
| 35 namespace { | |
| 36 | |
| 37 class ScopedFlush { | |
| 38 public: | |
| 39 explicit ScopedFlush(gpu::gles2::GLES2Interface* gl) : gl_(gl) {} | |
| 40 | |
| 41 ~ScopedFlush() { gl_->Flush(); } | |
| 42 | |
| 43 private: | |
| 44 gpu::gles2::GLES2Interface* gl_; | |
| 45 | |
| 46 DISALLOW_COPY_AND_ASSIGN(ScopedFlush); | |
| 47 }; | |
| 48 | |
| 49 // Helper class for allocating and holding an RGBA texture of a given | |
| 50 // size and an associated framebuffer. | |
| 51 class TextureFrameBufferPair { | |
| 52 public: | |
| 53 TextureFrameBufferPair(GLES2Interface* gl, gfx::Size size) | |
| 54 : texture_(gl), framebuffer_(gl), size_(size) { | |
| 55 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder( | |
| 56 gl, texture_); | |
| 57 gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, size.width(), size.height(), 0, | |
| 58 GL_RGBA, GL_UNSIGNED_BYTE, NULL); | |
| 59 display_compositor::ScopedFramebufferBinder<GL_FRAMEBUFFER> | |
| 60 framebuffer_binder(gl, framebuffer_); | |
| 61 gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, | |
| 62 GL_TEXTURE_2D, texture_, 0); | |
| 63 } | |
| 64 | |
| 65 GLuint texture() const { return texture_.id(); } | |
| 66 GLuint framebuffer() const { return framebuffer_.id(); } | |
| 67 gfx::Size size() const { return size_; } | |
| 68 | |
| 69 private: | |
| 70 display_compositor::ScopedTexture texture_; | |
| 71 display_compositor::ScopedFramebuffer framebuffer_; | |
| 72 gfx::Size size_; | |
| 73 | |
| 74 DISALLOW_COPY_AND_ASSIGN(TextureFrameBufferPair); | |
| 75 }; | |
| 76 | |
| 77 // Helper class for holding a scaler, a texture for the output of that | |
| 78 // scaler and an associated frame buffer. This is inteded to be used | |
| 79 // when the output of a scaler is to be sent to a readback. | |
| 80 class ScalerHolder { | |
| 81 public: | |
| 82 ScalerHolder(GLES2Interface* gl, | |
| 83 display_compositor::GLHelper::ScalerInterface* scaler) | |
| 84 : texture_and_framebuffer_(gl, scaler->DstSize()), scaler_(scaler) {} | |
| 85 | |
| 86 void Scale(GLuint src_texture) { | |
| 87 scaler_->Scale(src_texture, texture_and_framebuffer_.texture()); | |
| 88 } | |
| 89 | |
| 90 display_compositor::GLHelper::ScalerInterface* scaler() const { | |
| 91 return scaler_.get(); | |
| 92 } | |
| 93 TextureFrameBufferPair* texture_and_framebuffer() { | |
| 94 return &texture_and_framebuffer_; | |
| 95 } | |
| 96 GLuint texture() const { return texture_and_framebuffer_.texture(); } | |
| 97 | |
| 98 private: | |
| 99 TextureFrameBufferPair texture_and_framebuffer_; | |
| 100 std::unique_ptr<display_compositor::GLHelper::ScalerInterface> scaler_; | |
| 101 | |
| 102 DISALLOW_COPY_AND_ASSIGN(ScalerHolder); | |
| 103 }; | |
| 104 | |
| 105 } // namespace | |
| 106 | |
| 107 namespace display_compositor { | |
| 108 typedef GLHelperReadbackSupport::FormatSupport FormatSupport; | |
| 109 | |
| 110 // Implements GLHelper::CropScaleReadbackAndCleanTexture and encapsulates | |
| 111 // the data needed for it. | |
| 112 class GLHelper::CopyTextureToImpl | |
| 113 : public base::SupportsWeakPtr<GLHelper::CopyTextureToImpl> { | |
| 114 public: | |
| 115 CopyTextureToImpl(GLES2Interface* gl, | |
| 116 gpu::ContextSupport* context_support, | |
| 117 GLHelper* helper) | |
| 118 : gl_(gl), | |
| 119 context_support_(context_support), | |
| 120 helper_(helper), | |
| 121 flush_(gl), | |
| 122 max_draw_buffers_(0) { | |
| 123 const GLubyte* extensions = gl_->GetString(GL_EXTENSIONS); | |
| 124 if (!extensions) | |
| 125 return; | |
| 126 std::string extensions_string = | |
| 127 " " + std::string(reinterpret_cast<const char*>(extensions)) + " "; | |
| 128 if (extensions_string.find(" GL_EXT_draw_buffers ") != std::string::npos) { | |
| 129 gl_->GetIntegerv(GL_MAX_DRAW_BUFFERS_EXT, &max_draw_buffers_); | |
| 130 } | |
| 131 } | |
| 132 ~CopyTextureToImpl() { CancelRequests(); } | |
| 133 | |
| 134 GLuint ConsumeMailboxToTexture(const gpu::Mailbox& mailbox, | |
| 135 const gpu::SyncToken& sync_token) { | |
| 136 return helper_->ConsumeMailboxToTexture(mailbox, sync_token); | |
| 137 } | |
| 138 | |
| 139 void CropScaleReadbackAndCleanTexture( | |
| 140 GLuint src_texture, | |
| 141 const gfx::Size& src_size, | |
| 142 const gfx::Rect& src_subrect, | |
| 143 const gfx::Size& dst_size, | |
| 144 unsigned char* out, | |
| 145 const SkColorType out_color_type, | |
| 146 const base::Callback<void(bool)>& callback, | |
| 147 GLHelper::ScalerQuality quality); | |
| 148 | |
| 149 void ReadbackTextureSync(GLuint texture, | |
| 150 const gfx::Rect& src_rect, | |
| 151 unsigned char* out, | |
| 152 SkColorType format); | |
| 153 | |
| 154 void ReadbackTextureAsync(GLuint texture, | |
| 155 const gfx::Size& dst_size, | |
| 156 unsigned char* out, | |
| 157 SkColorType color_type, | |
| 158 const base::Callback<void(bool)>& callback); | |
| 159 | |
| 160 // Reads back bytes from the currently bound frame buffer. | |
| 161 // Note that dst_size is specified in bytes, not pixels. | |
| 162 void ReadbackAsync( | |
| 163 const gfx::Size& dst_size, | |
| 164 int32_t bytes_per_row, // generally dst_size.width() * 4 | |
| 165 int32_t row_stride_bytes, // generally dst_size.width() * 4 | |
| 166 unsigned char* out, | |
| 167 GLenum format, | |
| 168 GLenum type, | |
| 169 size_t bytes_per_pixel, | |
| 170 const base::Callback<void(bool)>& callback); | |
| 171 | |
| 172 void ReadbackPlane(TextureFrameBufferPair* source, | |
| 173 int row_stride_bytes, | |
| 174 unsigned char* data, | |
| 175 int size_shift, | |
| 176 const gfx::Rect& paste_rect, | |
| 177 ReadbackSwizzle swizzle, | |
| 178 const base::Callback<void(bool)>& callback); | |
| 179 | |
| 180 GLuint CopyAndScaleTexture(GLuint texture, | |
| 181 const gfx::Size& src_size, | |
| 182 const gfx::Size& dst_size, | |
| 183 bool vertically_flip_texture, | |
| 184 GLHelper::ScalerQuality quality); | |
| 185 | |
| 186 ReadbackYUVInterface* CreateReadbackPipelineYUV( | |
| 187 GLHelper::ScalerQuality quality, | |
| 188 const gfx::Size& src_size, | |
| 189 const gfx::Rect& src_subrect, | |
| 190 const gfx::Size& dst_size, | |
| 191 bool flip_vertically, | |
| 192 bool use_mrt); | |
| 193 | |
| 194 // Returns the maximum number of draw buffers available, | |
| 195 // 0 if GL_EXT_draw_buffers is not available. | |
| 196 GLint MaxDrawBuffers() const { return max_draw_buffers_; } | |
| 197 | |
| 198 FormatSupport GetReadbackConfig(SkColorType color_type, | |
| 199 bool can_swizzle, | |
| 200 GLenum* format, | |
| 201 GLenum* type, | |
| 202 size_t* bytes_per_pixel); | |
| 203 | |
| 204 private: | |
| 205 // A single request to CropScaleReadbackAndCleanTexture. | |
| 206 // The main thread can cancel the request, before it's handled by the helper | |
| 207 // thread, by resetting the texture and pixels fields. Alternatively, the | |
| 208 // thread marks that it handles the request by resetting the pixels field | |
| 209 // (meaning it guarantees that the callback with be called). | |
| 210 // In either case, the callback must be called exactly once, and the texture | |
| 211 // must be deleted by the main thread gl. | |
| 212 struct Request { | |
| 213 Request(const gfx::Size& size_, | |
| 214 int32_t bytes_per_row_, | |
| 215 int32_t row_stride_bytes_, | |
| 216 unsigned char* pixels_, | |
| 217 const base::Callback<void(bool)>& callback_) | |
| 218 : done(false), | |
| 219 size(size_), | |
| 220 bytes_per_row(bytes_per_row_), | |
| 221 row_stride_bytes(row_stride_bytes_), | |
| 222 pixels(pixels_), | |
| 223 callback(callback_), | |
| 224 buffer(0), | |
| 225 query(0) {} | |
| 226 | |
| 227 bool done; | |
| 228 bool result; | |
| 229 gfx::Size size; | |
| 230 int bytes_per_row; | |
| 231 int row_stride_bytes; | |
| 232 unsigned char* pixels; | |
| 233 base::Callback<void(bool)> callback; | |
| 234 GLuint buffer; | |
| 235 GLuint query; | |
| 236 }; | |
| 237 | |
| 238 // We must take care to call the callbacks last, as they may | |
| 239 // end up destroying the gl_helper and make *this invalid. | |
| 240 // We stick the finished requests in a stack object that calls | |
| 241 // the callbacks when it goes out of scope. | |
| 242 class FinishRequestHelper { | |
| 243 public: | |
| 244 FinishRequestHelper() {} | |
| 245 ~FinishRequestHelper() { | |
| 246 while (!requests_.empty()) { | |
| 247 Request* request = requests_.front(); | |
| 248 requests_.pop(); | |
| 249 request->callback.Run(request->result); | |
| 250 delete request; | |
| 251 } | |
| 252 } | |
| 253 void Add(Request* r) { requests_.push(r); } | |
| 254 | |
| 255 private: | |
| 256 std::queue<Request*> requests_; | |
| 257 DISALLOW_COPY_AND_ASSIGN(FinishRequestHelper); | |
| 258 }; | |
| 259 | |
| 260 // A readback pipeline that also converts the data to YUV before | |
| 261 // reading it back. | |
| 262 class ReadbackYUVImpl : public ReadbackYUVInterface { | |
| 263 public: | |
| 264 ReadbackYUVImpl(GLES2Interface* gl, | |
| 265 CopyTextureToImpl* copy_impl, | |
| 266 GLHelperScaling* scaler_impl, | |
| 267 GLHelper::ScalerQuality quality, | |
| 268 const gfx::Size& src_size, | |
| 269 const gfx::Rect& src_subrect, | |
| 270 const gfx::Size& dst_size, | |
| 271 bool flip_vertically, | |
| 272 ReadbackSwizzle swizzle); | |
| 273 | |
| 274 void ReadbackYUV(const gpu::Mailbox& mailbox, | |
| 275 const gpu::SyncToken& sync_token, | |
| 276 const gfx::Rect& target_visible_rect, | |
| 277 int y_plane_row_stride_bytes, | |
| 278 unsigned char* y_plane_data, | |
| 279 int u_plane_row_stride_bytes, | |
| 280 unsigned char* u_plane_data, | |
| 281 int v_plane_row_stride_bytes, | |
| 282 unsigned char* v_plane_data, | |
| 283 const gfx::Point& paste_location, | |
| 284 const base::Callback<void(bool)>& callback) override; | |
| 285 | |
| 286 ScalerInterface* scaler() override { return scaler_.scaler(); } | |
| 287 | |
| 288 private: | |
| 289 GLES2Interface* gl_; | |
| 290 CopyTextureToImpl* copy_impl_; | |
| 291 gfx::Size dst_size_; | |
| 292 ReadbackSwizzle swizzle_; | |
| 293 ScalerHolder scaler_; | |
| 294 ScalerHolder y_; | |
| 295 ScalerHolder u_; | |
| 296 ScalerHolder v_; | |
| 297 | |
| 298 DISALLOW_COPY_AND_ASSIGN(ReadbackYUVImpl); | |
| 299 }; | |
| 300 | |
| 301 // A readback pipeline that also converts the data to YUV before | |
| 302 // reading it back. This one uses Multiple Render Targets, which | |
| 303 // may not be supported on all platforms. | |
| 304 class ReadbackYUV_MRT : public ReadbackYUVInterface { | |
| 305 public: | |
| 306 ReadbackYUV_MRT(GLES2Interface* gl, | |
| 307 CopyTextureToImpl* copy_impl, | |
| 308 GLHelperScaling* scaler_impl, | |
| 309 GLHelper::ScalerQuality quality, | |
| 310 const gfx::Size& src_size, | |
| 311 const gfx::Rect& src_subrect, | |
| 312 const gfx::Size& dst_size, | |
| 313 bool flip_vertically, | |
| 314 ReadbackSwizzle swizzle); | |
| 315 | |
| 316 void ReadbackYUV(const gpu::Mailbox& mailbox, | |
| 317 const gpu::SyncToken& sync_token, | |
| 318 const gfx::Rect& target_visible_rect, | |
| 319 int y_plane_row_stride_bytes, | |
| 320 unsigned char* y_plane_data, | |
| 321 int u_plane_row_stride_bytes, | |
| 322 unsigned char* u_plane_data, | |
| 323 int v_plane_row_stride_bytes, | |
| 324 unsigned char* v_plane_data, | |
| 325 const gfx::Point& paste_location, | |
| 326 const base::Callback<void(bool)>& callback) override; | |
| 327 | |
| 328 ScalerInterface* scaler() override { return scaler_.scaler(); } | |
| 329 | |
| 330 private: | |
| 331 GLES2Interface* gl_; | |
| 332 CopyTextureToImpl* copy_impl_; | |
| 333 gfx::Size dst_size_; | |
| 334 GLHelper::ScalerQuality quality_; | |
| 335 ReadbackSwizzle swizzle_; | |
| 336 ScalerHolder scaler_; | |
| 337 std::unique_ptr<display_compositor::GLHelperScaling::ShaderInterface> | |
| 338 pass1_shader_; | |
| 339 std::unique_ptr<display_compositor::GLHelperScaling::ShaderInterface> | |
| 340 pass2_shader_; | |
| 341 TextureFrameBufferPair y_; | |
| 342 ScopedTexture uv_; | |
| 343 TextureFrameBufferPair u_; | |
| 344 TextureFrameBufferPair v_; | |
| 345 | |
| 346 DISALLOW_COPY_AND_ASSIGN(ReadbackYUV_MRT); | |
| 347 }; | |
| 348 | |
| 349 // Copies the block of pixels specified with |src_subrect| from |src_texture|, | |
| 350 // scales it to |dst_size|, writes it into a texture, and returns its ID. | |
| 351 // |src_size| is the size of |src_texture|. | |
| 352 GLuint ScaleTexture(GLuint src_texture, | |
| 353 const gfx::Size& src_size, | |
| 354 const gfx::Rect& src_subrect, | |
| 355 const gfx::Size& dst_size, | |
| 356 bool vertically_flip_texture, | |
| 357 bool swizzle, | |
| 358 SkColorType color_type, | |
| 359 GLHelper::ScalerQuality quality); | |
| 360 | |
| 361 // Converts each four consecutive pixels of the source texture into one pixel | |
| 362 // in the result texture with each pixel channel representing the grayscale | |
| 363 // color of one of the four original pixels: | |
| 364 // R1G1B1A1 R2G2B2A2 R3G3B3A3 R4G4B4A4 -> X1X2X3X4 | |
| 365 // The resulting texture is still an RGBA texture (which is ~4 times narrower | |
| 366 // than the original). If rendered directly, it wouldn't show anything useful, | |
| 367 // but the data in it can be used to construct a grayscale image. | |
| 368 // |encoded_texture_size| is the exact size of the resulting RGBA texture. It | |
| 369 // is equal to src_size.width()/4 rounded upwards. Some channels in the last | |
| 370 // pixel ((-src_size.width()) % 4) to be exact) are padding and don't contain | |
| 371 // useful data. | |
| 372 // If swizzle is set to true, the transformed pixels are reordered: | |
| 373 // R1G1B1A1 R2G2B2A2 R3G3B3A3 R4G4B4A4 -> X3X2X1X4. | |
| 374 GLuint EncodeTextureAsGrayscale(GLuint src_texture, | |
| 375 const gfx::Size& src_size, | |
| 376 gfx::Size* const encoded_texture_size, | |
| 377 bool vertically_flip_texture, | |
| 378 bool swizzle); | |
| 379 | |
| 380 static void nullcallback(bool success) {} | |
| 381 void ReadbackDone(Request* request, int bytes_per_pixel); | |
| 382 void FinishRequest(Request* request, | |
| 383 bool result, | |
| 384 FinishRequestHelper* helper); | |
| 385 void CancelRequests(); | |
| 386 | |
| 387 static const float kRGBtoYColorWeights[]; | |
| 388 static const float kRGBtoUColorWeights[]; | |
| 389 static const float kRGBtoVColorWeights[]; | |
| 390 static const float kRGBtoGrayscaleColorWeights[]; | |
| 391 | |
| 392 GLES2Interface* gl_; | |
| 393 gpu::ContextSupport* context_support_; | |
| 394 GLHelper* helper_; | |
| 395 | |
| 396 // A scoped flush that will ensure all resource deletions are flushed when | |
| 397 // this object is destroyed. Must be declared before other Scoped* fields. | |
| 398 ScopedFlush flush_; | |
| 399 | |
| 400 std::queue<Request*> request_queue_; | |
| 401 GLint max_draw_buffers_; | |
| 402 }; | |
| 403 | |
| 404 GLHelper::ScalerInterface* GLHelper::CreateScaler(ScalerQuality quality, | |
| 405 const gfx::Size& src_size, | |
| 406 const gfx::Rect& src_subrect, | |
| 407 const gfx::Size& dst_size, | |
| 408 bool vertically_flip_texture, | |
| 409 bool swizzle) { | |
| 410 InitScalerImpl(); | |
| 411 return scaler_impl_->CreateScaler(quality, src_size, src_subrect, dst_size, | |
| 412 vertically_flip_texture, swizzle); | |
| 413 } | |
| 414 | |
| 415 GLuint GLHelper::CopyTextureToImpl::ScaleTexture( | |
| 416 GLuint src_texture, | |
| 417 const gfx::Size& src_size, | |
| 418 const gfx::Rect& src_subrect, | |
| 419 const gfx::Size& dst_size, | |
| 420 bool vertically_flip_texture, | |
| 421 bool swizzle, | |
| 422 SkColorType color_type, | |
| 423 GLHelper::ScalerQuality quality) { | |
| 424 GLuint dst_texture = 0u; | |
| 425 gl_->GenTextures(1, &dst_texture); | |
| 426 { | |
| 427 GLenum format = GL_RGBA, type = GL_UNSIGNED_BYTE; | |
| 428 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, dst_texture); | |
| 429 | |
| 430 // Use GL_RGBA for destination/temporary texture unless we're working with | |
| 431 // 16-bit data | |
| 432 if (color_type == kRGB_565_SkColorType) { | |
| 433 format = GL_RGB; | |
| 434 type = GL_UNSIGNED_SHORT_5_6_5; | |
| 435 } | |
| 436 | |
| 437 gl_->TexImage2D(GL_TEXTURE_2D, 0, format, dst_size.width(), | |
| 438 dst_size.height(), 0, format, type, NULL); | |
| 439 } | |
| 440 std::unique_ptr<ScalerInterface> scaler( | |
| 441 helper_->CreateScaler(quality, src_size, src_subrect, dst_size, | |
| 442 vertically_flip_texture, swizzle)); | |
| 443 scaler->Scale(src_texture, dst_texture); | |
| 444 return dst_texture; | |
| 445 } | |
| 446 | |
| 447 GLuint GLHelper::CopyTextureToImpl::EncodeTextureAsGrayscale( | |
| 448 GLuint src_texture, | |
| 449 const gfx::Size& src_size, | |
| 450 gfx::Size* const encoded_texture_size, | |
| 451 bool vertically_flip_texture, | |
| 452 bool swizzle) { | |
| 453 GLuint dst_texture = 0u; | |
| 454 gl_->GenTextures(1, &dst_texture); | |
| 455 // The size of the encoded texture. | |
| 456 *encoded_texture_size = | |
| 457 gfx::Size((src_size.width() + 3) / 4, src_size.height()); | |
| 458 { | |
| 459 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, dst_texture); | |
| 460 gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, encoded_texture_size->width(), | |
| 461 encoded_texture_size->height(), 0, GL_RGBA, | |
| 462 GL_UNSIGNED_BYTE, NULL); | |
| 463 } | |
| 464 | |
| 465 helper_->InitScalerImpl(); | |
| 466 std::unique_ptr<ScalerInterface> grayscale_scaler( | |
| 467 helper_->scaler_impl_.get()->CreatePlanarScaler( | |
| 468 src_size, | |
| 469 gfx::Rect(0, 0, (src_size.width() + 3) & ~3, src_size.height()), | |
| 470 *encoded_texture_size, vertically_flip_texture, swizzle, | |
| 471 kRGBtoGrayscaleColorWeights)); | |
| 472 grayscale_scaler->Scale(src_texture, dst_texture); | |
| 473 return dst_texture; | |
| 474 } | |
| 475 | |
| 476 void GLHelper::CopyTextureToImpl::ReadbackAsync( | |
| 477 const gfx::Size& dst_size, | |
| 478 int32_t bytes_per_row, | |
| 479 int32_t row_stride_bytes, | |
| 480 unsigned char* out, | |
| 481 GLenum format, | |
| 482 GLenum type, | |
| 483 size_t bytes_per_pixel, | |
| 484 const base::Callback<void(bool)>& callback) { | |
| 485 TRACE_EVENT0("gpu.capture", "GLHelper::CopyTextureToImpl::ReadbackAsync"); | |
| 486 Request* request = | |
| 487 new Request(dst_size, bytes_per_row, row_stride_bytes, out, callback); | |
| 488 request_queue_.push(request); | |
| 489 request->buffer = 0u; | |
| 490 | |
| 491 gl_->GenBuffers(1, &request->buffer); | |
| 492 gl_->BindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, request->buffer); | |
| 493 gl_->BufferData(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, | |
| 494 bytes_per_pixel * dst_size.GetArea(), NULL, GL_STREAM_READ); | |
| 495 | |
| 496 request->query = 0u; | |
| 497 gl_->GenQueriesEXT(1, &request->query); | |
| 498 gl_->BeginQueryEXT(GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM, request->query); | |
| 499 gl_->ReadPixels(0, 0, dst_size.width(), dst_size.height(), format, type, | |
| 500 NULL); | |
| 501 gl_->EndQueryEXT(GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM); | |
| 502 gl_->BindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, 0); | |
| 503 context_support_->SignalQuery( | |
| 504 request->query, base::Bind(&CopyTextureToImpl::ReadbackDone, AsWeakPtr(), | |
| 505 request, bytes_per_pixel)); | |
| 506 } | |
| 507 | |
| 508 void GLHelper::CopyTextureToImpl::CropScaleReadbackAndCleanTexture( | |
| 509 GLuint src_texture, | |
| 510 const gfx::Size& src_size, | |
| 511 const gfx::Rect& src_subrect, | |
| 512 const gfx::Size& dst_size, | |
| 513 unsigned char* out, | |
| 514 const SkColorType out_color_type, | |
| 515 const base::Callback<void(bool)>& callback, | |
| 516 GLHelper::ScalerQuality quality) { | |
| 517 GLenum format, type; | |
| 518 size_t bytes_per_pixel; | |
| 519 SkColorType readback_color_type = out_color_type; | |
| 520 // Single-component textures are not supported by all GPUs, so we implement | |
| 521 // kAlpha_8_SkColorType support here via a special encoding (see below) using | |
| 522 // a 32-bit texture to represent an 8-bit image. | |
| 523 // Thus we use generic 32-bit readback in this case. | |
| 524 if (out_color_type == kAlpha_8_SkColorType) { | |
| 525 readback_color_type = kRGBA_8888_SkColorType; | |
| 526 } | |
| 527 | |
| 528 FormatSupport supported = GetReadbackConfig(readback_color_type, true, | |
| 529 &format, &type, &bytes_per_pixel); | |
| 530 | |
| 531 if (supported == GLHelperReadbackSupport::NOT_SUPPORTED) { | |
| 532 callback.Run(false); | |
| 533 return; | |
| 534 } | |
| 535 | |
| 536 GLuint texture = src_texture; | |
| 537 | |
| 538 // Scale texture if needed | |
| 539 // Optimization: SCALER_QUALITY_FAST is just a single bilinear pass, which we | |
| 540 // can do just as well in EncodeTextureAsGrayscale, which we will do if | |
| 541 // out_color_type is kAlpha_8_SkColorType, so let's skip the scaling step | |
| 542 // in that case. | |
| 543 bool scale_texture = out_color_type != kAlpha_8_SkColorType || | |
| 544 quality != GLHelper::SCALER_QUALITY_FAST; | |
| 545 if (scale_texture) { | |
| 546 // Don't swizzle during the scale step for kAlpha_8_SkColorType. | |
| 547 // We will swizzle in the encode step below if needed. | |
| 548 bool scale_swizzle = out_color_type == kAlpha_8_SkColorType | |
| 549 ? false | |
| 550 : supported == GLHelperReadbackSupport::SWIZZLE; | |
| 551 texture = ScaleTexture(src_texture, src_size, src_subrect, dst_size, true, | |
| 552 scale_swizzle, out_color_type == kAlpha_8_SkColorType | |
| 553 ? kN32_SkColorType | |
| 554 : out_color_type, | |
| 555 quality); | |
| 556 DCHECK(texture); | |
| 557 } | |
| 558 | |
| 559 gfx::Size readback_texture_size = dst_size; | |
| 560 // Encode texture to grayscale if needed. | |
| 561 if (out_color_type == kAlpha_8_SkColorType) { | |
| 562 // Do the vertical flip here if we haven't already done it when we scaled | |
| 563 // the texture. | |
| 564 bool encode_as_grayscale_vertical_flip = !scale_texture; | |
| 565 // EncodeTextureAsGrayscale by default creates a texture which should be | |
| 566 // read back as RGBA, so need to swizzle if the readback format is BGRA. | |
| 567 bool encode_as_grayscale_swizzle = format == GL_BGRA_EXT; | |
| 568 GLuint tmp_texture = EncodeTextureAsGrayscale( | |
| 569 texture, dst_size, &readback_texture_size, | |
| 570 encode_as_grayscale_vertical_flip, encode_as_grayscale_swizzle); | |
| 571 // If the scaled texture was created - delete it | |
| 572 if (scale_texture) | |
| 573 gl_->DeleteTextures(1, &texture); | |
| 574 texture = tmp_texture; | |
| 575 DCHECK(texture); | |
| 576 } | |
| 577 | |
| 578 // Readback the pixels of the resulting texture | |
| 579 ScopedFramebuffer dst_framebuffer(gl_); | |
| 580 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, | |
| 581 dst_framebuffer); | |
| 582 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, texture); | |
| 583 gl_->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, | |
| 584 texture, 0); | |
| 585 | |
| 586 int32_t bytes_per_row = out_color_type == kAlpha_8_SkColorType | |
| 587 ? dst_size.width() | |
| 588 : dst_size.width() * bytes_per_pixel; | |
| 589 | |
| 590 ReadbackAsync(readback_texture_size, bytes_per_row, bytes_per_row, out, | |
| 591 format, type, bytes_per_pixel, callback); | |
| 592 gl_->DeleteTextures(1, &texture); | |
| 593 } | |
| 594 | |
| 595 void GLHelper::CopyTextureToImpl::ReadbackTextureSync(GLuint texture, | |
| 596 const gfx::Rect& src_rect, | |
| 597 unsigned char* out, | |
| 598 SkColorType color_type) { | |
| 599 GLenum format, type; | |
| 600 size_t bytes_per_pixel; | |
| 601 FormatSupport supported = | |
| 602 GetReadbackConfig(color_type, false, &format, &type, &bytes_per_pixel); | |
| 603 if (supported == GLHelperReadbackSupport::NOT_SUPPORTED) { | |
| 604 return; | |
| 605 } | |
| 606 | |
| 607 ScopedFramebuffer dst_framebuffer(gl_); | |
| 608 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, | |
| 609 dst_framebuffer); | |
| 610 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, texture); | |
| 611 gl_->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, | |
| 612 texture, 0); | |
| 613 gl_->ReadPixels(src_rect.x(), src_rect.y(), src_rect.width(), | |
| 614 src_rect.height(), format, type, out); | |
| 615 } | |
| 616 | |
| 617 void GLHelper::CopyTextureToImpl::ReadbackTextureAsync( | |
| 618 GLuint texture, | |
| 619 const gfx::Size& dst_size, | |
| 620 unsigned char* out, | |
| 621 SkColorType color_type, | |
| 622 const base::Callback<void(bool)>& callback) { | |
| 623 GLenum format, type; | |
| 624 size_t bytes_per_pixel; | |
| 625 FormatSupport supported = | |
| 626 GetReadbackConfig(color_type, false, &format, &type, &bytes_per_pixel); | |
| 627 if (supported == GLHelperReadbackSupport::NOT_SUPPORTED) { | |
| 628 callback.Run(false); | |
| 629 return; | |
| 630 } | |
| 631 | |
| 632 ScopedFramebuffer dst_framebuffer(gl_); | |
| 633 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, | |
| 634 dst_framebuffer); | |
| 635 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, texture); | |
| 636 gl_->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, | |
| 637 texture, 0); | |
| 638 ReadbackAsync(dst_size, dst_size.width() * bytes_per_pixel, | |
| 639 dst_size.width() * bytes_per_pixel, out, format, type, | |
| 640 bytes_per_pixel, callback); | |
| 641 } | |
| 642 | |
| 643 GLuint GLHelper::CopyTextureToImpl::CopyAndScaleTexture( | |
| 644 GLuint src_texture, | |
| 645 const gfx::Size& src_size, | |
| 646 const gfx::Size& dst_size, | |
| 647 bool vertically_flip_texture, | |
| 648 GLHelper::ScalerQuality quality) { | |
| 649 return ScaleTexture(src_texture, src_size, gfx::Rect(src_size), dst_size, | |
| 650 vertically_flip_texture, false, | |
| 651 kRGBA_8888_SkColorType, // GL_RGBA | |
| 652 quality); | |
| 653 } | |
| 654 | |
| 655 void GLHelper::CopyTextureToImpl::ReadbackDone(Request* finished_request, | |
| 656 int bytes_per_pixel) { | |
| 657 TRACE_EVENT0("gpu.capture", | |
| 658 "GLHelper::CopyTextureToImpl::CheckReadbackFramebufferComplete"); | |
| 659 finished_request->done = true; | |
| 660 | |
| 661 FinishRequestHelper finish_request_helper; | |
| 662 | |
| 663 // We process transfer requests in the order they were received, regardless | |
| 664 // of the order we get the callbacks in. | |
| 665 while (!request_queue_.empty()) { | |
| 666 Request* request = request_queue_.front(); | |
| 667 if (!request->done) { | |
| 668 break; | |
| 669 } | |
| 670 | |
| 671 bool result = false; | |
| 672 if (request->buffer != 0) { | |
| 673 gl_->BindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, request->buffer); | |
| 674 unsigned char* data = static_cast<unsigned char*>(gl_->MapBufferCHROMIUM( | |
| 675 GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, GL_READ_ONLY)); | |
| 676 if (data) { | |
| 677 result = true; | |
| 678 if (request->bytes_per_row == request->size.width() * bytes_per_pixel && | |
| 679 request->bytes_per_row == request->row_stride_bytes) { | |
| 680 memcpy(request->pixels, data, | |
| 681 request->size.GetArea() * bytes_per_pixel); | |
| 682 } else { | |
| 683 unsigned char* out = request->pixels; | |
| 684 for (int y = 0; y < request->size.height(); y++) { | |
| 685 memcpy(out, data, request->bytes_per_row); | |
| 686 out += request->row_stride_bytes; | |
| 687 data += request->size.width() * bytes_per_pixel; | |
| 688 } | |
| 689 } | |
| 690 gl_->UnmapBufferCHROMIUM(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM); | |
| 691 } | |
| 692 gl_->BindBuffer(GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM, 0); | |
| 693 } | |
| 694 FinishRequest(request, result, &finish_request_helper); | |
| 695 } | |
| 696 } | |
| 697 | |
| 698 void GLHelper::CopyTextureToImpl::FinishRequest( | |
| 699 Request* request, | |
| 700 bool result, | |
| 701 FinishRequestHelper* finish_request_helper) { | |
| 702 TRACE_EVENT0("gpu.capture", "GLHelper::CopyTextureToImpl::FinishRequest"); | |
| 703 DCHECK(request_queue_.front() == request); | |
| 704 request_queue_.pop(); | |
| 705 request->result = result; | |
| 706 ScopedFlush flush(gl_); | |
| 707 if (request->query != 0) { | |
| 708 gl_->DeleteQueriesEXT(1, &request->query); | |
| 709 request->query = 0; | |
| 710 } | |
| 711 if (request->buffer != 0) { | |
| 712 gl_->DeleteBuffers(1, &request->buffer); | |
| 713 request->buffer = 0; | |
| 714 } | |
| 715 finish_request_helper->Add(request); | |
| 716 } | |
| 717 | |
| 718 void GLHelper::CopyTextureToImpl::CancelRequests() { | |
| 719 FinishRequestHelper finish_request_helper; | |
| 720 while (!request_queue_.empty()) { | |
| 721 Request* request = request_queue_.front(); | |
| 722 FinishRequest(request, false, &finish_request_helper); | |
| 723 } | |
| 724 } | |
| 725 | |
| 726 FormatSupport GLHelper::CopyTextureToImpl::GetReadbackConfig( | |
| 727 SkColorType color_type, | |
| 728 bool can_swizzle, | |
| 729 GLenum* format, | |
| 730 GLenum* type, | |
| 731 size_t* bytes_per_pixel) { | |
| 732 return helper_->readback_support_->GetReadbackConfig( | |
| 733 color_type, can_swizzle, format, type, bytes_per_pixel); | |
| 734 } | |
| 735 | |
| 736 GLHelper::GLHelper(GLES2Interface* gl, gpu::ContextSupport* context_support) | |
| 737 : gl_(gl), | |
| 738 context_support_(context_support), | |
| 739 readback_support_(new GLHelperReadbackSupport(gl)) {} | |
| 740 | |
| 741 GLHelper::~GLHelper() {} | |
| 742 | |
| 743 void GLHelper::CropScaleReadbackAndCleanTexture( | |
| 744 GLuint src_texture, | |
| 745 const gfx::Size& src_size, | |
| 746 const gfx::Rect& src_subrect, | |
| 747 const gfx::Size& dst_size, | |
| 748 unsigned char* out, | |
| 749 const SkColorType out_color_type, | |
| 750 const base::Callback<void(bool)>& callback, | |
| 751 GLHelper::ScalerQuality quality) { | |
| 752 InitCopyTextToImpl(); | |
| 753 copy_texture_to_impl_->CropScaleReadbackAndCleanTexture( | |
| 754 src_texture, src_size, src_subrect, dst_size, out, out_color_type, | |
| 755 callback, quality); | |
| 756 } | |
| 757 | |
| 758 void GLHelper::CropScaleReadbackAndCleanMailbox( | |
| 759 const gpu::Mailbox& src_mailbox, | |
| 760 const gpu::SyncToken& sync_token, | |
| 761 const gfx::Size& src_size, | |
| 762 const gfx::Rect& src_subrect, | |
| 763 const gfx::Size& dst_size, | |
| 764 unsigned char* out, | |
| 765 const SkColorType out_color_type, | |
| 766 const base::Callback<void(bool)>& callback, | |
| 767 GLHelper::ScalerQuality quality) { | |
| 768 GLuint mailbox_texture = ConsumeMailboxToTexture(src_mailbox, sync_token); | |
| 769 CropScaleReadbackAndCleanTexture(mailbox_texture, src_size, src_subrect, | |
| 770 dst_size, out, out_color_type, callback, | |
| 771 quality); | |
| 772 gl_->DeleteTextures(1, &mailbox_texture); | |
| 773 } | |
| 774 | |
| 775 void GLHelper::ReadbackTextureSync(GLuint texture, | |
| 776 const gfx::Rect& src_rect, | |
| 777 unsigned char* out, | |
| 778 SkColorType format) { | |
| 779 InitCopyTextToImpl(); | |
| 780 copy_texture_to_impl_->ReadbackTextureSync(texture, src_rect, out, format); | |
| 781 } | |
| 782 | |
| 783 void GLHelper::ReadbackTextureAsync( | |
| 784 GLuint texture, | |
| 785 const gfx::Size& dst_size, | |
| 786 unsigned char* out, | |
| 787 SkColorType color_type, | |
| 788 const base::Callback<void(bool)>& callback) { | |
| 789 InitCopyTextToImpl(); | |
| 790 copy_texture_to_impl_->ReadbackTextureAsync(texture, dst_size, out, | |
| 791 color_type, callback); | |
| 792 } | |
| 793 | |
| 794 GLuint GLHelper::CopyTexture(GLuint texture, const gfx::Size& size) { | |
| 795 InitCopyTextToImpl(); | |
| 796 return copy_texture_to_impl_->CopyAndScaleTexture( | |
| 797 texture, size, size, false, GLHelper::SCALER_QUALITY_FAST); | |
| 798 } | |
| 799 | |
| 800 GLuint GLHelper::CopyAndScaleTexture(GLuint texture, | |
| 801 const gfx::Size& src_size, | |
| 802 const gfx::Size& dst_size, | |
| 803 bool vertically_flip_texture, | |
| 804 ScalerQuality quality) { | |
| 805 InitCopyTextToImpl(); | |
| 806 return copy_texture_to_impl_->CopyAndScaleTexture( | |
| 807 texture, src_size, dst_size, vertically_flip_texture, quality); | |
| 808 } | |
| 809 | |
| 810 GLuint GLHelper::CompileShaderFromSource(const GLchar* source, GLenum type) { | |
| 811 GLuint shader = gl_->CreateShader(type); | |
| 812 GLint length = strlen(source); | |
| 813 gl_->ShaderSource(shader, 1, &source, &length); | |
| 814 gl_->CompileShader(shader); | |
| 815 GLint compile_status = 0; | |
| 816 gl_->GetShaderiv(shader, GL_COMPILE_STATUS, &compile_status); | |
| 817 if (!compile_status) { | |
| 818 GLint log_length = 0; | |
| 819 gl_->GetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_length); | |
| 820 if (log_length) { | |
| 821 std::unique_ptr<GLchar[]> log(new GLchar[log_length]); | |
| 822 GLsizei returned_log_length = 0; | |
| 823 gl_->GetShaderInfoLog(shader, log_length, &returned_log_length, | |
| 824 log.get()); | |
| 825 LOG(ERROR) << std::string(log.get(), returned_log_length); | |
| 826 } | |
| 827 gl_->DeleteShader(shader); | |
| 828 return 0; | |
| 829 } | |
| 830 return shader; | |
| 831 } | |
| 832 | |
| 833 void GLHelper::InitCopyTextToImpl() { | |
| 834 // Lazily initialize |copy_texture_to_impl_| | |
| 835 if (!copy_texture_to_impl_) | |
| 836 copy_texture_to_impl_.reset( | |
| 837 new CopyTextureToImpl(gl_, context_support_, this)); | |
| 838 } | |
| 839 | |
| 840 void GLHelper::InitScalerImpl() { | |
| 841 // Lazily initialize |scaler_impl_| | |
| 842 if (!scaler_impl_) | |
| 843 scaler_impl_.reset(new GLHelperScaling(gl_, this)); | |
| 844 } | |
| 845 | |
| 846 GLint GLHelper::MaxDrawBuffers() { | |
| 847 InitCopyTextToImpl(); | |
| 848 return copy_texture_to_impl_->MaxDrawBuffers(); | |
| 849 } | |
| 850 | |
| 851 void GLHelper::CopySubBufferDamage(GLenum target, | |
| 852 GLuint texture, | |
| 853 GLuint previous_texture, | |
| 854 const SkRegion& new_damage, | |
| 855 const SkRegion& old_damage) { | |
| 856 SkRegion region(old_damage); | |
| 857 if (region.op(new_damage, SkRegion::kDifference_Op)) { | |
| 858 ScopedFramebuffer dst_framebuffer(gl_); | |
| 859 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, | |
| 860 dst_framebuffer); | |
| 861 gl_->BindTexture(target, texture); | |
| 862 gl_->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, | |
| 863 previous_texture, 0); | |
| 864 for (SkRegion::Iterator it(region); !it.done(); it.next()) { | |
| 865 const SkIRect& rect = it.rect(); | |
| 866 gl_->CopyTexSubImage2D(target, 0, rect.x(), rect.y(), rect.x(), rect.y(), | |
| 867 rect.width(), rect.height()); | |
| 868 } | |
| 869 gl_->BindTexture(target, 0); | |
| 870 gl_->Flush(); | |
| 871 } | |
| 872 } | |
| 873 | |
| 874 GLuint GLHelper::CreateTexture() { | |
| 875 GLuint texture = 0u; | |
| 876 gl_->GenTextures(1, &texture); | |
| 877 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder( | |
| 878 gl_, texture); | |
| 879 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | |
| 880 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | |
| 881 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | |
| 882 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | |
| 883 return texture; | |
| 884 } | |
| 885 | |
| 886 void GLHelper::DeleteTexture(GLuint texture_id) { | |
| 887 gl_->DeleteTextures(1, &texture_id); | |
| 888 } | |
| 889 | |
| 890 void GLHelper::GenerateSyncToken(gpu::SyncToken* sync_token) { | |
| 891 const uint64_t fence_sync = gl_->InsertFenceSyncCHROMIUM(); | |
| 892 gl_->ShallowFlushCHROMIUM(); | |
| 893 gl_->GenSyncTokenCHROMIUM(fence_sync, sync_token->GetData()); | |
| 894 } | |
| 895 | |
| 896 void GLHelper::WaitSyncToken(const gpu::SyncToken& sync_token) { | |
| 897 gl_->WaitSyncTokenCHROMIUM(sync_token.GetConstData()); | |
| 898 } | |
| 899 | |
| 900 gpu::MailboxHolder GLHelper::ProduceMailboxHolderFromTexture( | |
| 901 GLuint texture_id) { | |
| 902 gpu::Mailbox mailbox; | |
| 903 gl_->GenMailboxCHROMIUM(mailbox.name); | |
| 904 gl_->ProduceTextureDirectCHROMIUM(texture_id, GL_TEXTURE_2D, mailbox.name); | |
| 905 | |
| 906 gpu::SyncToken sync_token; | |
| 907 GenerateSyncToken(&sync_token); | |
| 908 | |
| 909 return gpu::MailboxHolder(mailbox, sync_token, GL_TEXTURE_2D); | |
| 910 } | |
| 911 | |
| 912 GLuint GLHelper::ConsumeMailboxToTexture(const gpu::Mailbox& mailbox, | |
| 913 const gpu::SyncToken& sync_token) { | |
| 914 if (mailbox.IsZero()) | |
| 915 return 0; | |
| 916 if (sync_token.HasData()) | |
| 917 WaitSyncToken(sync_token); | |
| 918 GLuint texture = | |
| 919 gl_->CreateAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox.name); | |
| 920 return texture; | |
| 921 } | |
| 922 | |
| 923 void GLHelper::ResizeTexture(GLuint texture, const gfx::Size& size) { | |
| 924 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder( | |
| 925 gl_, texture); | |
| 926 gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size.width(), size.height(), 0, | |
| 927 GL_RGB, GL_UNSIGNED_BYTE, NULL); | |
| 928 } | |
| 929 | |
| 930 void GLHelper::CopyTextureSubImage(GLuint texture, const gfx::Rect& rect) { | |
| 931 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder( | |
| 932 gl_, texture); | |
| 933 gl_->CopyTexSubImage2D(GL_TEXTURE_2D, 0, rect.x(), rect.y(), rect.x(), | |
| 934 rect.y(), rect.width(), rect.height()); | |
| 935 } | |
| 936 | |
| 937 void GLHelper::CopyTextureFullImage(GLuint texture, const gfx::Size& size) { | |
| 938 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder( | |
| 939 gl_, texture); | |
| 940 gl_->CopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 0, 0, size.width(), | |
| 941 size.height(), 0); | |
| 942 } | |
| 943 | |
| 944 void GLHelper::Flush() { | |
| 945 gl_->Flush(); | |
| 946 } | |
| 947 | |
| 948 void GLHelper::InsertOrderingBarrier() { | |
| 949 gl_->OrderingBarrierCHROMIUM(); | |
| 950 } | |
| 951 | |
| 952 void GLHelper::CopyTextureToImpl::ReadbackPlane( | |
| 953 TextureFrameBufferPair* source, | |
| 954 int row_stride_bytes, | |
| 955 unsigned char* data, | |
| 956 int size_shift, | |
| 957 const gfx::Rect& paste_rect, | |
| 958 ReadbackSwizzle swizzle, | |
| 959 const base::Callback<void(bool)>& callback) { | |
| 960 gl_->BindFramebuffer(GL_FRAMEBUFFER, source->framebuffer()); | |
| 961 const size_t offset = row_stride_bytes * (paste_rect.y() >> size_shift) + | |
| 962 (paste_rect.x() >> size_shift); | |
| 963 ReadbackAsync(source->size(), paste_rect.width() >> size_shift, | |
| 964 row_stride_bytes, data + offset, | |
| 965 (swizzle == kSwizzleBGRA) ? GL_BGRA_EXT : GL_RGBA, | |
| 966 GL_UNSIGNED_BYTE, 4, callback); | |
| 967 } | |
| 968 | |
| 969 const float GLHelper::CopyTextureToImpl::kRGBtoYColorWeights[] = { | |
| 970 0.257f, 0.504f, 0.098f, 0.0625f}; | |
| 971 const float GLHelper::CopyTextureToImpl::kRGBtoUColorWeights[] = { | |
| 972 -0.148f, -0.291f, 0.439f, 0.5f}; | |
| 973 const float GLHelper::CopyTextureToImpl::kRGBtoVColorWeights[] = { | |
| 974 0.439f, -0.368f, -0.071f, 0.5f}; | |
| 975 const float GLHelper::CopyTextureToImpl::kRGBtoGrayscaleColorWeights[] = { | |
| 976 0.213f, 0.715f, 0.072f, 0.0f}; | |
| 977 | |
| 978 // YUV readback constructors. Initiates the main scaler pipeline and | |
| 979 // one planar scaler for each of the Y, U and V planes. | |
| 980 GLHelper::CopyTextureToImpl::ReadbackYUVImpl::ReadbackYUVImpl( | |
| 981 GLES2Interface* gl, | |
| 982 CopyTextureToImpl* copy_impl, | |
| 983 GLHelperScaling* scaler_impl, | |
| 984 GLHelper::ScalerQuality quality, | |
| 985 const gfx::Size& src_size, | |
| 986 const gfx::Rect& src_subrect, | |
| 987 const gfx::Size& dst_size, | |
| 988 bool flip_vertically, | |
| 989 ReadbackSwizzle swizzle) | |
| 990 : gl_(gl), | |
| 991 copy_impl_(copy_impl), | |
| 992 dst_size_(dst_size), | |
| 993 swizzle_(swizzle), | |
| 994 scaler_(gl, | |
| 995 scaler_impl->CreateScaler(quality, | |
| 996 src_size, | |
| 997 src_subrect, | |
| 998 dst_size, | |
| 999 flip_vertically, | |
| 1000 false)), | |
| 1001 y_(gl, | |
| 1002 scaler_impl->CreatePlanarScaler( | |
| 1003 dst_size, | |
| 1004 gfx::Rect(0, 0, (dst_size.width() + 3) & ~3, dst_size.height()), | |
| 1005 gfx::Size((dst_size.width() + 3) / 4, dst_size.height()), | |
| 1006 false, | |
| 1007 (swizzle == kSwizzleBGRA), | |
| 1008 kRGBtoYColorWeights)), | |
| 1009 u_(gl, | |
| 1010 scaler_impl->CreatePlanarScaler( | |
| 1011 dst_size, | |
| 1012 gfx::Rect(0, | |
| 1013 0, | |
| 1014 (dst_size.width() + 7) & ~7, | |
| 1015 (dst_size.height() + 1) & ~1), | |
| 1016 gfx::Size((dst_size.width() + 7) / 8, (dst_size.height() + 1) / 2), | |
| 1017 false, | |
| 1018 (swizzle == kSwizzleBGRA), | |
| 1019 kRGBtoUColorWeights)), | |
| 1020 v_(gl, | |
| 1021 scaler_impl->CreatePlanarScaler( | |
| 1022 dst_size, | |
| 1023 gfx::Rect(0, | |
| 1024 0, | |
| 1025 (dst_size.width() + 7) & ~7, | |
| 1026 (dst_size.height() + 1) & ~1), | |
| 1027 gfx::Size((dst_size.width() + 7) / 8, (dst_size.height() + 1) / 2), | |
| 1028 false, | |
| 1029 (swizzle == kSwizzleBGRA), | |
| 1030 kRGBtoVColorWeights)) { | |
| 1031 DCHECK(!(dst_size.width() & 1)); | |
| 1032 DCHECK(!(dst_size.height() & 1)); | |
| 1033 } | |
| 1034 | |
| 1035 void GLHelper::CopyTextureToImpl::ReadbackYUVImpl::ReadbackYUV( | |
| 1036 const gpu::Mailbox& mailbox, | |
| 1037 const gpu::SyncToken& sync_token, | |
| 1038 const gfx::Rect& target_visible_rect, | |
| 1039 int y_plane_row_stride_bytes, | |
| 1040 unsigned char* y_plane_data, | |
| 1041 int u_plane_row_stride_bytes, | |
| 1042 unsigned char* u_plane_data, | |
| 1043 int v_plane_row_stride_bytes, | |
| 1044 unsigned char* v_plane_data, | |
| 1045 const gfx::Point& paste_location, | |
| 1046 const base::Callback<void(bool)>& callback) { | |
| 1047 DCHECK(!(paste_location.x() & 1)); | |
| 1048 DCHECK(!(paste_location.y() & 1)); | |
| 1049 | |
| 1050 GLuint mailbox_texture = | |
| 1051 copy_impl_->ConsumeMailboxToTexture(mailbox, sync_token); | |
| 1052 | |
| 1053 // Scale texture to right size. | |
| 1054 scaler_.Scale(mailbox_texture); | |
| 1055 gl_->DeleteTextures(1, &mailbox_texture); | |
| 1056 | |
| 1057 // Convert the scaled texture in to Y, U and V planes. | |
| 1058 y_.Scale(scaler_.texture()); | |
| 1059 u_.Scale(scaler_.texture()); | |
| 1060 v_.Scale(scaler_.texture()); | |
| 1061 | |
| 1062 const gfx::Rect paste_rect(paste_location, dst_size_); | |
| 1063 if (!target_visible_rect.Contains(paste_rect)) { | |
| 1064 LOG(DFATAL) << "Paste rect not inside VideoFrame's visible rect!"; | |
| 1065 callback.Run(false); | |
| 1066 return; | |
| 1067 } | |
| 1068 | |
| 1069 // Read back planes, one at a time. Keep the video frame alive while doing the | |
| 1070 // readback. | |
| 1071 copy_impl_->ReadbackPlane(y_.texture_and_framebuffer(), | |
| 1072 y_plane_row_stride_bytes, y_plane_data, 0, | |
| 1073 paste_rect, swizzle_, base::Bind(&nullcallback)); | |
| 1074 copy_impl_->ReadbackPlane(u_.texture_and_framebuffer(), | |
| 1075 u_plane_row_stride_bytes, u_plane_data, 1, | |
| 1076 paste_rect, swizzle_, base::Bind(&nullcallback)); | |
| 1077 copy_impl_->ReadbackPlane(v_.texture_and_framebuffer(), | |
| 1078 v_plane_row_stride_bytes, v_plane_data, 1, | |
| 1079 paste_rect, swizzle_, callback); | |
| 1080 gl_->BindFramebuffer(GL_FRAMEBUFFER, 0); | |
| 1081 } | |
| 1082 | |
| 1083 // YUV readback constructors. Initiates the main scaler pipeline and | |
| 1084 // one planar scaler for each of the Y, U and V planes. | |
| 1085 GLHelper::CopyTextureToImpl::ReadbackYUV_MRT::ReadbackYUV_MRT( | |
| 1086 GLES2Interface* gl, | |
| 1087 CopyTextureToImpl* copy_impl, | |
| 1088 GLHelperScaling* scaler_impl, | |
| 1089 GLHelper::ScalerQuality quality, | |
| 1090 const gfx::Size& src_size, | |
| 1091 const gfx::Rect& src_subrect, | |
| 1092 const gfx::Size& dst_size, | |
| 1093 bool flip_vertically, | |
| 1094 ReadbackSwizzle swizzle) | |
| 1095 : gl_(gl), | |
| 1096 copy_impl_(copy_impl), | |
| 1097 dst_size_(dst_size), | |
| 1098 quality_(quality), | |
| 1099 swizzle_(swizzle), | |
| 1100 scaler_(gl, | |
| 1101 scaler_impl->CreateScaler(quality, | |
| 1102 src_size, | |
| 1103 src_subrect, | |
| 1104 dst_size, | |
| 1105 false, | |
| 1106 false)), | |
| 1107 pass1_shader_(scaler_impl->CreateYuvMrtShader( | |
| 1108 dst_size, | |
| 1109 gfx::Rect(0, 0, (dst_size.width() + 3) & ~3, dst_size.height()), | |
| 1110 gfx::Size((dst_size.width() + 3) / 4, dst_size.height()), | |
| 1111 flip_vertically, | |
| 1112 (swizzle == kSwizzleBGRA), | |
| 1113 GLHelperScaling::SHADER_YUV_MRT_PASS1)), | |
| 1114 pass2_shader_(scaler_impl->CreateYuvMrtShader( | |
| 1115 gfx::Size((dst_size.width() + 3) / 4, dst_size.height()), | |
| 1116 gfx::Rect(0, 0, (dst_size.width() + 7) / 8 * 2, dst_size.height()), | |
| 1117 gfx::Size((dst_size.width() + 7) / 8, (dst_size.height() + 1) / 2), | |
| 1118 false, | |
| 1119 (swizzle == kSwizzleBGRA), | |
| 1120 GLHelperScaling::SHADER_YUV_MRT_PASS2)), | |
| 1121 y_(gl, gfx::Size((dst_size.width() + 3) / 4, dst_size.height())), | |
| 1122 uv_(gl), | |
| 1123 u_(gl, | |
| 1124 gfx::Size((dst_size.width() + 7) / 8, (dst_size.height() + 1) / 2)), | |
| 1125 v_(gl, | |
| 1126 gfx::Size((dst_size.width() + 7) / 8, (dst_size.height() + 1) / 2)) { | |
| 1127 DCHECK(!(dst_size.width() & 1)); | |
| 1128 DCHECK(!(dst_size.height() & 1)); | |
| 1129 | |
| 1130 display_compositor::ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl, | |
| 1131 uv_); | |
| 1132 gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (dst_size.width() + 3) / 4, | |
| 1133 dst_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); | |
| 1134 } | |
| 1135 | |
| 1136 void GLHelper::CopyTextureToImpl::ReadbackYUV_MRT::ReadbackYUV( | |
| 1137 const gpu::Mailbox& mailbox, | |
| 1138 const gpu::SyncToken& sync_token, | |
| 1139 const gfx::Rect& target_visible_rect, | |
| 1140 int y_plane_row_stride_bytes, | |
| 1141 unsigned char* y_plane_data, | |
| 1142 int u_plane_row_stride_bytes, | |
| 1143 unsigned char* u_plane_data, | |
| 1144 int v_plane_row_stride_bytes, | |
| 1145 unsigned char* v_plane_data, | |
| 1146 const gfx::Point& paste_location, | |
| 1147 const base::Callback<void(bool)>& callback) { | |
| 1148 DCHECK(!(paste_location.x() & 1)); | |
| 1149 DCHECK(!(paste_location.y() & 1)); | |
| 1150 | |
| 1151 GLuint mailbox_texture = | |
| 1152 copy_impl_->ConsumeMailboxToTexture(mailbox, sync_token); | |
| 1153 | |
| 1154 GLuint texture; | |
| 1155 if (quality_ == GLHelper::SCALER_QUALITY_FAST) { | |
| 1156 // Optimization: SCALER_QUALITY_FAST is just a single bilinear | |
| 1157 // pass, which pass1_shader_ can do just as well, so let's skip | |
| 1158 // the actual scaling in that case. | |
| 1159 texture = mailbox_texture; | |
| 1160 } else { | |
| 1161 // Scale texture to right size. | |
| 1162 scaler_.Scale(mailbox_texture); | |
| 1163 texture = scaler_.texture(); | |
| 1164 } | |
| 1165 | |
| 1166 std::vector<GLuint> outputs(2); | |
| 1167 // Convert the scaled texture in to Y, U and V planes. | |
| 1168 outputs[0] = y_.texture(); | |
| 1169 outputs[1] = uv_; | |
| 1170 pass1_shader_->Execute(texture, outputs); | |
| 1171 | |
| 1172 gl_->DeleteTextures(1, &mailbox_texture); | |
| 1173 | |
| 1174 outputs[0] = u_.texture(); | |
| 1175 outputs[1] = v_.texture(); | |
| 1176 pass2_shader_->Execute(uv_, outputs); | |
| 1177 | |
| 1178 const gfx::Rect paste_rect(paste_location, dst_size_); | |
| 1179 if (!target_visible_rect.Contains(paste_rect)) { | |
| 1180 LOG(DFATAL) << "Paste rect not inside VideoFrame's visible rect!"; | |
| 1181 callback.Run(false); | |
| 1182 return; | |
| 1183 } | |
| 1184 | |
| 1185 // Read back planes, one at a time. | |
| 1186 copy_impl_->ReadbackPlane(&y_, y_plane_row_stride_bytes, y_plane_data, 0, | |
| 1187 paste_rect, swizzle_, base::Bind(&nullcallback)); | |
| 1188 copy_impl_->ReadbackPlane(&u_, u_plane_row_stride_bytes, u_plane_data, 1, | |
| 1189 paste_rect, swizzle_, base::Bind(&nullcallback)); | |
| 1190 copy_impl_->ReadbackPlane(&v_, v_plane_row_stride_bytes, v_plane_data, 1, | |
| 1191 paste_rect, swizzle_, callback); | |
| 1192 gl_->BindFramebuffer(GL_FRAMEBUFFER, 0); | |
| 1193 } | |
| 1194 | |
| 1195 bool GLHelper::IsReadbackConfigSupported(SkColorType color_type) { | |
| 1196 DCHECK(readback_support_.get()); | |
| 1197 GLenum format, type; | |
| 1198 size_t bytes_per_pixel; | |
| 1199 FormatSupport support = readback_support_->GetReadbackConfig( | |
| 1200 color_type, false, &format, &type, &bytes_per_pixel); | |
| 1201 | |
| 1202 return (support == GLHelperReadbackSupport::SUPPORTED); | |
| 1203 } | |
| 1204 | |
| 1205 ReadbackYUVInterface* GLHelper::CopyTextureToImpl::CreateReadbackPipelineYUV( | |
| 1206 GLHelper::ScalerQuality quality, | |
| 1207 const gfx::Size& src_size, | |
| 1208 const gfx::Rect& src_subrect, | |
| 1209 const gfx::Size& dst_size, | |
| 1210 bool flip_vertically, | |
| 1211 bool use_mrt) { | |
| 1212 helper_->InitScalerImpl(); | |
| 1213 // Just query if the best readback configuration needs a swizzle In | |
| 1214 // ReadbackPlane() we will choose GL_RGBA/GL_BGRA_EXT based on swizzle | |
| 1215 GLenum format, type; | |
| 1216 size_t bytes_per_pixel; | |
| 1217 FormatSupport supported = GetReadbackConfig(kRGBA_8888_SkColorType, true, | |
| 1218 &format, &type, &bytes_per_pixel); | |
| 1219 DCHECK((format == GL_RGBA || format == GL_BGRA_EXT) && | |
| 1220 type == GL_UNSIGNED_BYTE); | |
| 1221 | |
| 1222 ReadbackSwizzle swizzle = kSwizzleNone; | |
| 1223 if (supported == GLHelperReadbackSupport::SWIZZLE) | |
| 1224 swizzle = kSwizzleBGRA; | |
| 1225 | |
| 1226 if (max_draw_buffers_ >= 2 && use_mrt) { | |
| 1227 return new ReadbackYUV_MRT(gl_, this, helper_->scaler_impl_.get(), quality, | |
| 1228 src_size, src_subrect, dst_size, flip_vertically, | |
| 1229 swizzle); | |
| 1230 } | |
| 1231 return new ReadbackYUVImpl(gl_, this, helper_->scaler_impl_.get(), quality, | |
| 1232 src_size, src_subrect, dst_size, flip_vertically, | |
| 1233 swizzle); | |
| 1234 } | |
| 1235 | |
| 1236 ReadbackYUVInterface* GLHelper::CreateReadbackPipelineYUV( | |
| 1237 ScalerQuality quality, | |
| 1238 const gfx::Size& src_size, | |
| 1239 const gfx::Rect& src_subrect, | |
| 1240 const gfx::Size& dst_size, | |
| 1241 bool flip_vertically, | |
| 1242 bool use_mrt) { | |
| 1243 InitCopyTextToImpl(); | |
| 1244 return copy_texture_to_impl_->CreateReadbackPipelineYUV( | |
| 1245 quality, src_size, src_subrect, dst_size, flip_vertically, use_mrt); | |
| 1246 } | |
| 1247 | |
| 1248 } // namespace display_compositor | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1905863002:
Revert of Introduce components/display_compositor (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master