| // Copyright 2014 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. |
| |
| #include "ui/gl/gl_image_android_native_buffer.h" |
| |
| #include "ui/gl/gl_surface_egl.h" |
| #include "ui/gl/scoped_binders.h" |
| |
| namespace gfx { |
| |
| GLImageAndroidNativeBuffer::GLImageAndroidNativeBuffer(gfx::Size size) |
| : GLImageEGL(size), |
| release_after_use_(false), |
| in_use_(false), |
| target_(0), |
| egl_image_for_unbind_(EGL_NO_IMAGE_KHR), |
| texture_id_for_unbind_(0) {} |
| |
| GLImageAndroidNativeBuffer::~GLImageAndroidNativeBuffer() { Destroy(); } |
| |
| bool GLImageAndroidNativeBuffer::Initialize(gfx::GpuMemoryBufferHandle buffer) { |
| DCHECK(buffer.native_buffer); |
| |
| EGLint attrs[] = {EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE}; |
| return GLImageEGL::Initialize( |
| EGL_NATIVE_BUFFER_ANDROID, buffer.native_buffer, attrs); |
| } |
| |
| void GLImageAndroidNativeBuffer::Destroy() { |
| if (egl_image_for_unbind_ != EGL_NO_IMAGE_KHR) { |
| eglDestroyImageKHR(GLSurfaceEGL::GetHardwareDisplay(), |
| egl_image_for_unbind_); |
| egl_image_for_unbind_ = EGL_NO_IMAGE_KHR; |
| } |
| if (texture_id_for_unbind_) { |
| glDeleteTextures(1, &texture_id_for_unbind_); |
| texture_id_for_unbind_ = 0; |
| } |
| |
| GLImageEGL::Destroy(); |
| } |
| |
| bool GLImageAndroidNativeBuffer::BindTexImage(unsigned target) { |
| DCHECK_NE(EGL_NO_IMAGE_KHR, egl_image_); |
| |
| if (target == GL_TEXTURE_RECTANGLE_ARB) { |
| LOG(ERROR) << "EGLImage cannot be bound to TEXTURE_RECTANGLE_ARB target"; |
| return false; |
| } |
| |
| if (target_ && target_ != target) { |
| LOG(ERROR) << "EGLImage can only be bound to one target"; |
| return false; |
| } |
| target_ = target; |
| |
| // Defer ImageTargetTexture2D if not currently in use. |
| if (!in_use_) |
| return true; |
| |
| glEGLImageTargetTexture2DOES(target_, egl_image_); |
| DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); |
| return true; |
| } |
| |
| void GLImageAndroidNativeBuffer::WillUseTexImage() { |
| DCHECK(egl_image_); |
| DCHECK(!in_use_); |
| in_use_ = true; |
| glEGLImageTargetTexture2DOES(target_, egl_image_); |
| DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); |
| } |
| |
| void GLImageAndroidNativeBuffer::DidUseTexImage() { |
| DCHECK(in_use_); |
| in_use_ = false; |
| |
| if (!release_after_use_) |
| return; |
| |
| if (egl_image_for_unbind_ == EGL_NO_IMAGE_KHR) { |
| DCHECK_EQ(0u, texture_id_for_unbind_); |
| glGenTextures(1, &texture_id_for_unbind_); |
| |
| { |
| ScopedTextureBinder texture_binder(GL_TEXTURE_2D, texture_id_for_unbind_); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| char zero[4] = {0, }; |
| glTexImage2D( |
| GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, &zero); |
| } |
| |
| EGLint attrs[] = {EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE}; |
| // Need to pass current EGL rendering context to eglCreateImageKHR for |
| // target type EGL_GL_TEXTURE_2D_KHR. |
| egl_image_for_unbind_ = eglCreateImageKHR( |
| GLSurfaceEGL::GetHardwareDisplay(), |
| eglGetCurrentContext(), |
| EGL_GL_TEXTURE_2D_KHR, |
| reinterpret_cast<EGLClientBuffer>(texture_id_for_unbind_), |
| attrs); |
| DCHECK_NE(EGL_NO_IMAGE_KHR, egl_image_for_unbind_) |
| << "Error creating EGLImage: " << eglGetError(); |
| } |
| |
| glEGLImageTargetTexture2DOES(target_, egl_image_for_unbind_); |
| DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError()); |
| } |
| |
| void GLImageAndroidNativeBuffer::SetReleaseAfterUse() { |
| release_after_use_ = true; |
| } |
| |
| } // namespace gfx |