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| 1 // Copyright (c) 2016 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_GLES2_CMD_COPY_TEX_IMAGE_H_ |
| 6 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEX_IMAGE_H_ |
| 7 |
| 8 #include <array> |
| 9 |
| 10 #include "base/containers/hash_tables.h" |
| 11 #include "base/macros.h" |
| 12 #include "gpu/command_buffer/service/feature_info.h" |
| 13 #include "gpu/command_buffer/service/gl_utils.h" |
| 14 #include "gpu/gpu_export.h" |
| 15 |
| 16 namespace gpu { |
| 17 namespace gles2 { |
| 18 |
| 19 class GLES2Decoder; |
| 20 |
| 21 } // namespace gles2. |
| 22 |
| 23 // This class encapsulates the resources required to implement the |
| 24 // glCopyTexImage and glCopyTexSubImage commands. These commands somtimes |
| 25 // require a blit. |
| 26 class GPU_EXPORT CopyTexImageResourceManager { |
| 27 public: |
| 28 explicit CopyTexImageResourceManager(const gles2::FeatureInfo* feature_info); |
| 29 ~CopyTexImageResourceManager(); |
| 30 |
| 31 void Initialize(const gles2::GLES2Decoder* decoder); |
| 32 void Destroy(); |
| 33 |
| 34 void DoCopyTexImage2DToLUMAComatabilityTexture( |
| 35 const gles2::GLES2Decoder* decoder, |
| 36 GLuint dest_texture, |
| 37 GLenum dest_texture_target, |
| 38 GLenum dest_target, |
| 39 GLenum luma_format, |
| 40 GLenum luma_type, |
| 41 GLint level, |
| 42 GLenum internal_format, |
| 43 GLint x, |
| 44 GLint y, |
| 45 GLsizei width, |
| 46 GLsizei height, |
| 47 GLuint source_framebuffer, |
| 48 GLenum source_framebuffer_internal_format); |
| 49 |
| 50 void DoCopyTexSubImage2DToLUMAComatabilityTexture( |
| 51 const gles2::GLES2Decoder* decoder, |
| 52 GLuint dest_texture, |
| 53 GLenum dest_texture_target, |
| 54 GLenum dest_target, |
| 55 GLenum luma_format, |
| 56 GLenum luma_type, |
| 57 GLint level, |
| 58 GLint xoffset, |
| 59 GLint yoffset, |
| 60 GLint x, |
| 61 GLint y, |
| 62 GLsizei width, |
| 63 GLsizei height, |
| 64 GLuint source_framebuffer, |
| 65 GLenum source_framebuffer_internal_format); |
| 66 |
| 67 static bool CopyTexImageRequiresBlit(const gles2::FeatureInfo* feature_info, |
| 68 GLenum dest_texture_format); |
| 69 |
| 70 private: |
| 71 scoped_refptr<const gles2::FeatureInfo> feature_info_; |
| 72 |
| 73 bool initialized_ = false; |
| 74 |
| 75 GLuint blit_program_ = 0; |
| 76 |
| 77 std::array<GLuint, 2> scratch_textures_ = {{0, 0}}; |
| 78 GLuint scratch_fbo_ = 0; |
| 79 |
| 80 GLuint vao_ = 0; |
| 81 |
| 82 DISALLOW_COPY_AND_ASSIGN(CopyTexImageResourceManager); |
| 83 }; |
| 84 |
| 85 } // namespace gpu. |
| 86 |
| 87 #endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_COPY_TEX_IMAGE_H_ |
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