gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

ui/gl/gl_image_shm.cc

-// Copyright 2013 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_shm.h"
-
-#include "base/debug/trace_event.h"
-#include "base/process/process_handle.h"
-#include "ui/gl/scoped_binders.h"
-
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
-    defined(USE_OZONE)
-#include "ui/gl/gl_surface_egl.h"
-#endif
-
-namespace gfx {
-
-namespace {
-
-bool ValidFormat(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
-    case GL_RGBA8_OES:
-      return true;
-    default:
-      return false;
-  }
-}
-
-GLenum TextureFormat(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
-      return GL_BGRA_EXT;
-    case GL_RGBA8_OES:
-      return GL_RGBA;
-    default:
-      NOTREACHED();
-      return 0;
-  }
-}
-
-GLenum DataFormat(unsigned internalformat) {
-  return TextureFormat(internalformat);
-}
-
-GLenum DataType(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
-    case GL_RGBA8_OES:
-      return GL_UNSIGNED_BYTE;
-    default:
-      NOTREACHED();
-      return 0;
-  }
-}
-
-GLenum BytesPerPixel(unsigned internalformat) {
-  switch (internalformat) {
-    case GL_BGRA8_EXT:
-    case GL_RGBA8_OES:
-      return 4;
-    default:
-      NOTREACHED();
-      return 0;
-  }
-}
-
-}  // namespace
-
-GLImageShm::GLImageShm(gfx::Size size, unsigned internalformat)
-    : size_(size),
-      internalformat_(internalformat)
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
-    defined(USE_OZONE)
-      ,
-      egl_texture_id_(0u),
-      egl_image_(EGL_NO_IMAGE_KHR)
-#endif
-{
-}
-
-GLImageShm::~GLImageShm() { Destroy(); }
-
-bool GLImageShm::Initialize(gfx::GpuMemoryBufferHandle buffer) {
-  if (!ValidFormat(internalformat_)) {
-    DVLOG(0) << "Invalid format: " << internalformat_;
-    return false;
-  }
-
-  if (!base::SharedMemory::IsHandleValid(buffer.handle))
-    return false;
-
-  base::SharedMemory shared_memory(buffer.handle, true);
-
-  // Duplicate the handle.
-  base::SharedMemoryHandle duped_shared_memory_handle;
-  if (!shared_memory.ShareToProcess(base::GetCurrentProcessHandle(),
-                                    &duped_shared_memory_handle)) {
-    DVLOG(0) << "Failed to duplicate shared memory handle.";
-    return false;
-  }
-
-  shared_memory_.reset(
-      new base::SharedMemory(duped_shared_memory_handle, true));
-  return true;
-}
-
-void GLImageShm::Destroy() {
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
-    defined(USE_OZONE)
-  if (egl_image_ != EGL_NO_IMAGE_KHR) {
-    eglDestroyImageKHR(GLSurfaceEGL::GetHardwareDisplay(), egl_image_);
-    egl_image_ = EGL_NO_IMAGE_KHR;
-  }
-
-  if (egl_texture_id_) {
-    glDeleteTextures(1, &egl_texture_id_);
-    egl_texture_id_ = 0u;
-  }
-#endif
-}
-
-gfx::Size GLImageShm::GetSize() { return size_; }
-
-bool GLImageShm::BindTexImage(unsigned target) {
-  TRACE_EVENT0("gpu", "GLImageShm::BindTexImage");
-  DCHECK(shared_memory_);
-  DCHECK(ValidFormat(internalformat_));
-
-  size_t size = size_.GetArea() * BytesPerPixel(internalformat_);
-  DCHECK(!shared_memory_->memory());
-  if (!shared_memory_->Map(size)) {
-    DVLOG(0) << "Failed to map shared memory.";
-    return false;
-  }
-
-  DCHECK(shared_memory_->memory());
-
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
-    defined(USE_OZONE)
-  if (target == GL_TEXTURE_EXTERNAL_OES) {
-    if (egl_image_ == EGL_NO_IMAGE_KHR) {
-      DCHECK_EQ(0u, egl_texture_id_);
-      glGenTextures(1, &egl_texture_id_);
-
-      {
-        ScopedTextureBinder texture_binder(GL_TEXTURE_2D, egl_texture_id_);
-
-        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);
-        glTexImage2D(GL_TEXTURE_2D,
-                     0,  // mip level
-                     TextureFormat(internalformat_),
-                     size_.width(),
-                     size_.height(),
-                     0,  // border
-                     DataFormat(internalformat_),
-                     DataType(internalformat_),
-                     shared_memory_->memory());
-      }
-
-      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_ =
-          eglCreateImageKHR(GLSurfaceEGL::GetHardwareDisplay(),
-                            eglGetCurrentContext(),
-                            EGL_GL_TEXTURE_2D_KHR,
-                            reinterpret_cast<EGLClientBuffer>(egl_texture_id_),
-                            attrs);
-      DCHECK_NE(EGL_NO_IMAGE_KHR, egl_image_)
-          << "Error creating EGLImage: " << eglGetError();
-    } else {
-      ScopedTextureBinder texture_binder(GL_TEXTURE_2D, egl_texture_id_);
-
-      glTexSubImage2D(GL_TEXTURE_2D,
-                      0,  // mip level
-                      0,  // x-offset
-                      0,  // y-offset
-                      size_.width(),
-                      size_.height(),
-                      DataFormat(internalformat_),
-                      DataType(internalformat_),
-                      shared_memory_->memory());
-    }
-
-    glEGLImageTargetTexture2DOES(target, egl_image_);
-    DCHECK_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
-
-    shared_memory_->Unmap();
-    return true;
-  }
-#endif
-
-  DCHECK_NE(static_cast<GLenum>(GL_TEXTURE_EXTERNAL_OES), target);
-  glTexImage2D(target,
-               0,  // mip level
-               TextureFormat(internalformat_),
-               size_.width(),
-               size_.height(),
-               0,  // border
-               DataFormat(internalformat_),
-               DataType(internalformat_),
-               shared_memory_->memory());
-
-  shared_memory_->Unmap();
-  return true;
-}
-
-}  // namespace gfx