| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_PAINT_PAINT_OP_BUFFER_SERIALIZER_H_ |
| #define CC_PAINT_PAINT_OP_BUFFER_SERIALIZER_H_ |
| |
| #include "cc/paint/paint_op_buffer.h" |
| |
| #include "third_party/skia/src/core/SkRemoteGlyphCache.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| |
| namespace cc { |
| |
| class TransferCacheSerializeHelper; |
| class CC_PAINT_EXPORT PaintOpBufferSerializer { |
| public: |
| using SerializeCallback = |
| base::Callback<size_t(const PaintOp*, const PaintOp::SerializeOptions&)>; |
| |
| PaintOpBufferSerializer(SerializeCallback serialize_cb, |
| ImageProvider* image_provider, |
| TransferCacheSerializeHelper* transfer_cache, |
| SkStrikeServer* strike_server, |
| SkColorSpace* color_space, |
| bool can_use_lcd_text, |
| bool context_supports_distance_field_text, |
| int max_texture_size, |
| size_t max_texture_bytes); |
| virtual ~PaintOpBufferSerializer(); |
| |
| struct Preamble { |
| // The full size of the content, to know whether edge texel clearing |
| // is required or not. The full_raster_rect and playback_rect must |
| // be contained in this size. |
| gfx::Size content_size; |
| // Rect in content space (1 unit = 1 pixel) of this tile. |
| gfx::Rect full_raster_rect; |
| // A subrect in content space (full_raster_rect must contain this) of |
| // the partial content to play back. |
| gfx::Rect playback_rect; |
| // The translation and scale to do after |
| gfx::Vector2dF post_translation; |
| gfx::SizeF post_scale = gfx::SizeF(1.f, 1.f); |
| // If requires_clear is true, then this will raster will be cleared to |
| // transparent. If false, it assumes that the content will raster |
| // opaquely up to content_size inset by 1 (with the last pixel being |
| // potentially being partially transparent, if post scaled). |
| bool requires_clear = true; |
| // If clearing is needed, the color to clear to. |
| SkColor background_color = SK_ColorTRANSPARENT; |
| }; |
| // Serialize the buffer with a preamble. This function wraps the buffer in a |
| // save/restore and includes any translations, scales, and clearing as |
| // specified by the preamble. This should generally be used for top level |
| // rastering of an entire tile. |
| void Serialize(const PaintOpBuffer* buffer, |
| const std::vector<size_t>* offsets, |
| const Preamble& preamble); |
| // Serialize the buffer without a preamble. This function serializes the whole |
| // buffer without any extra ops added. No clearing is done. This should |
| // generally be used for internal PaintOpBuffers that want to be sent as-is. |
| void Serialize(const PaintOpBuffer* buffer); |
| // Serialize the buffer with a scale and a playback rect. This should |
| // generally be used for internal PaintOpBuffers in PaintShaders that have |
| // a scale and a tiling, but don't want the clearing or other complicated |
| // logic of the top level Serialize. |
| // post_matrix_for_analysis adds a scale that is not added to the serialized |
| // buffer, but used in analysis. This is required for cases that don't modify |
| // the record during serialization, but need to send resources based on the |
| // raster scale (mainly PaintRecord backed PaintFilters). |
| void Serialize(const PaintOpBuffer* buffer, |
| const gfx::Rect& playback_rect, |
| const gfx::SizeF& post_scale, |
| const SkMatrix& post_matrix_for_analysis); |
| |
| bool valid() const { return valid_; } |
| |
| private: |
| void SerializePreamble(const Preamble& preamble, |
| const PaintOp::SerializeOptions& options, |
| const PlaybackParams& params); |
| void SerializeBuffer(const PaintOpBuffer* buffer, |
| const std::vector<size_t>* offsets); |
| bool SerializeOpWithFlags(const PaintOpWithFlags* flags_op, |
| PaintOp::SerializeOptions* options, |
| const PlaybackParams& params, |
| uint8_t alpha); |
| bool SerializeOp(const PaintOp* op, |
| const PaintOp::SerializeOptions& options, |
| const PlaybackParams& params); |
| void Save(const PaintOp::SerializeOptions& options, |
| const PlaybackParams& params); |
| void RestoreToCount(int count, |
| const PaintOp::SerializeOptions& options, |
| const PlaybackParams& params); |
| PaintOp::SerializeOptions MakeSerializeOptions(); |
| void ClearForOpaqueRaster(const Preamble& preamble, |
| const PaintOp::SerializeOptions& options, |
| const PlaybackParams& params); |
| |
| SerializeCallback serialize_cb_; |
| ImageProvider* image_provider_; |
| TransferCacheSerializeHelper* transfer_cache_; |
| SkStrikeServer* strike_server_; |
| SkColorSpace* color_space_; |
| bool can_use_lcd_text_; |
| bool context_supports_distance_field_text_; |
| int max_texture_size_; |
| size_t max_texture_bytes_; |
| |
| SkTextBlobCacheDiffCanvas text_blob_canvas_; |
| std::unique_ptr<SkCanvas> color_canvas_; |
| SkCanvas* canvas_ = nullptr; |
| bool valid_ = true; |
| }; |
| |
| // Serializes the ops in the memory available, fails on overflow. |
| class CC_PAINT_EXPORT SimpleBufferSerializer : public PaintOpBufferSerializer { |
| public: |
| SimpleBufferSerializer(void* memory, |
| size_t size, |
| ImageProvider* image_provider, |
| TransferCacheSerializeHelper* transfer_cache, |
| SkStrikeServer* strike_server, |
| SkColorSpace* color_space, |
| bool can_use_lcd_text, |
| bool context_supports_distance_field_text, |
| int max_texture_size, |
| size_t max_texture_bytes); |
| ~SimpleBufferSerializer() override; |
| |
| size_t written() const { return written_; } |
| |
| private: |
| size_t SerializeToMemory(const PaintOp* op, |
| const PaintOp::SerializeOptions& options); |
| |
| void* memory_; |
| const size_t total_; |
| size_t written_ = 0u; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_PAINT_PAINT_OP_BUFFER_SERIALIZER_H_ |