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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 "ui/gl/gl_image_egl.h" | 5 #include "ui/gl/gl_image_egl.h" |
| 6 | 6 |
| 7 #include "ui/gl/gl_bindings.h" | 7 #include "ui/gl/gl_bindings.h" |
| 8 #include "ui/gl/gl_surface_egl.h" | 8 #include "ui/gl/gl_surface_egl.h" |
| 9 | 9 |
| 10 namespace gfx { | 10 namespace gfx { |
| 11 | 11 |
| 12 GLImageEGL::GLImageEGL(gfx::Size size) | 12 GLImageEGL::GLImageEGL(gfx::Size size) |
| 13 : egl_image_(EGL_NO_IMAGE_KHR), | 13 : egl_image_(EGL_NO_IMAGE_KHR), |
| 14 size_(size), | 14 size_(size), |
| 15 need_unbind_after_use_(false), |
| 15 in_use_(false) { | 16 in_use_(false) { |
| 16 } | 17 } |
| 17 | 18 |
| 18 GLImageEGL::~GLImageEGL() { | 19 GLImageEGL::~GLImageEGL() { |
| 19 Destroy(); | 20 Destroy(); |
| 20 } | 21 } |
| 21 | 22 |
| 22 bool GLImageEGL::Initialize(gfx::GpuMemoryBufferHandle buffer) { | 23 bool GLImageEGL::Initialize(gfx::GpuMemoryBufferHandle buffer) { |
| 23 DCHECK(buffer.native_buffer); | 24 DCHECK(buffer.native_buffer); |
| 24 EGLint attrs[] = { | 25 EGLint attrs[] = { |
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| 69 // Defer ImageTargetTexture2D if not currently in use. | 70 // Defer ImageTargetTexture2D if not currently in use. |
| 70 if (!in_use_) | 71 if (!in_use_) |
| 71 return true; | 72 return true; |
| 72 | 73 |
| 73 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image_); | 74 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image_); |
| 74 DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | 75 DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); |
| 75 return true; | 76 return true; |
| 76 } | 77 } |
| 77 | 78 |
| 78 void GLImageEGL::ReleaseTexImage() { | 79 void GLImageEGL::ReleaseTexImage() { |
| 79 // Nothing to do here as image is released after each use. | 80 // Nothing to do here as image is released after each use or there is no need |
| 81 // to release image. |
| 80 } | 82 } |
| 81 | 83 |
| 82 void GLImageEGL::WillUseTexImage() { | 84 void GLImageEGL::WillUseTexImage() { |
| 83 DCHECK(egl_image_); | 85 DCHECK(egl_image_); |
| 84 DCHECK(!in_use_); | 86 DCHECK(!in_use_); |
| 85 in_use_ = true; | 87 in_use_ = true; |
| 86 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image_); | 88 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image_); |
| 87 DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); | 89 DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); |
| 88 } | 90 } |
| 89 | 91 |
| 90 void GLImageEGL::DidUseTexImage() { | 92 void GLImageEGL::DidUseTexImage() { |
| 91 DCHECK(in_use_); | 93 DCHECK(in_use_); |
| 92 in_use_ = false; | 94 in_use_ = false; |
| 95 |
| 96 if (!need_unbind_after_use_) |
| 97 return; |
| 98 |
| 93 char zero[4] = { 0, }; | 99 char zero[4] = { 0, }; |
| 94 glTexImage2D(GL_TEXTURE_2D, | 100 glTexImage2D(GL_TEXTURE_2D, |
| 95 0, | 101 0, |
| 96 GL_RGBA, | 102 GL_RGBA, |
| 97 1, | 103 1, |
| 98 1, | 104 1, |
| 99 0, | 105 0, |
| 100 GL_RGBA, | 106 GL_RGBA, |
| 101 GL_UNSIGNED_BYTE, | 107 GL_UNSIGNED_BYTE, |
| 102 &zero); | 108 &zero); |
| 103 } | 109 } |
| 104 | 110 |
| 111 void GLImageEGL::SetReleaseAfterUse() { |
| 112 need_unbind_after_use_ = true; |
| 113 } |
| 114 |
| 105 } // namespace gfx | 115 } // namespace gfx |
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