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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/common/gpu/client/gl_helper_readback_support.h" | 5 #include "content/browser/compositor/gl_helper_readback_support.h" |
| 6 #include "base/logging.h" | 6 #include "base/logging.h" |
| 7 #include "gpu/GLES2/gl2extchromium.h" | 7 #include "gpu/GLES2/gl2extchromium.h" |
| 8 #include "third_party/skia/include/core/SkImageInfo.h" | 8 #include "third_party/skia/include/core/SkImageInfo.h" |
| 9 | 9 |
| 10 namespace content { | 10 namespace content { |
| 11 | 11 |
| 12 GLHelperReadbackSupport::GLHelperReadbackSupport(gpu::gles2::GLES2Interface* gl) | 12 GLHelperReadbackSupport::GLHelperReadbackSupport(gpu::gles2::GLES2Interface* gl) |
| 13 : gl_(gl) { | 13 : gl_(gl) { |
| 14 InitializeReadbackSupport(); | 14 InitializeReadbackSupport(); |
| 15 } | 15 } |
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| 74 } | 74 } |
| 75 } | 75 } |
| 76 | 76 |
| 77 const int kTestSize = 64; | 77 const int kTestSize = 64; |
| 78 content::ScopedTexture dst_texture(gl_); | 78 content::ScopedTexture dst_texture(gl_); |
| 79 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, dst_texture); | 79 ScopedTextureBinder<GL_TEXTURE_2D> texture_binder(gl_, dst_texture); |
| 80 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | 80 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| 81 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | 81 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| 82 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | 82 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| 83 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | 83 gl_->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| 84 gl_->TexImage2D( | 84 gl_->TexImage2D(GL_TEXTURE_2D, 0, format, kTestSize, kTestSize, 0, format, |
| 85 GL_TEXTURE_2D, 0, format, kTestSize, kTestSize, 0, format, type, NULL); | 85 type, NULL); |
| 86 ScopedFramebuffer dst_framebuffer(gl_); | 86 ScopedFramebuffer dst_framebuffer(gl_); |
| 87 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, | 87 ScopedFramebufferBinder<GL_FRAMEBUFFER> framebuffer_binder(gl_, |
| 88 dst_framebuffer); | 88 dst_framebuffer); |
| 89 gl_->FramebufferTexture2D( | 89 gl_->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, |
| 90 GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dst_texture, 0); | 90 dst_texture, 0); |
| 91 GLint format_tmp = 0, type_tmp = 0; | 91 GLint format_tmp = 0, type_tmp = 0; |
| 92 gl_->GetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &format_tmp); | 92 gl_->GetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &format_tmp); |
| 93 gl_->GetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &type_tmp); | 93 gl_->GetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &type_tmp); |
| 94 *format_out = format_tmp; | 94 *format_out = format_tmp; |
| 95 *type_out = type_tmp; | 95 *type_out = type_tmp; |
| 96 | 96 |
| 97 struct FormatCacheEntry entry = { format, type, *format_out, *type_out }; | 97 struct FormatCacheEntry entry = {format, type, *format_out, *type_out}; |
| 98 format_cache_.push_back(entry); | 98 format_cache_.push_back(entry); |
| 99 } | 99 } |
| 100 | 100 |
| 101 bool GLHelperReadbackSupport::SupportsFormat(GLenum format, GLenum type) { | 101 bool GLHelperReadbackSupport::SupportsFormat(GLenum format, GLenum type) { |
| 102 // GLES2.0 Specification says this pairing is always supported | 102 // GLES2.0 Specification says this pairing is always supported |
| 103 // with additional format from GL_IMPLEMENTATION_COLOR_READ_FORMAT/TYPE | 103 // with additional format from GL_IMPLEMENTATION_COLOR_READ_FORMAT/TYPE |
| 104 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) | 104 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) |
| 105 return true; | 105 return true; |
| 106 | 106 |
| 107 bool supports_format = false; | 107 bool supports_format = false; |
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| 163 return GLHelperReadbackSupport::NOT_SUPPORTED; | 163 return GLHelperReadbackSupport::NOT_SUPPORTED; |
| 164 default: | 164 default: |
| 165 NOTREACHED(); | 165 NOTREACHED(); |
| 166 break; | 166 break; |
| 167 } | 167 } |
| 168 | 168 |
| 169 return GLHelperReadbackSupport::NOT_SUPPORTED; | 169 return GLHelperReadbackSupport::NOT_SUPPORTED; |
| 170 } | 170 } |
| 171 | 171 |
| 172 } // namespace content | 172 } // namespace content |
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