diff options
Diffstat (limited to 'chrome/common/accelerated_surface_mac.cc')
| -rw-r--r-- | chrome/common/accelerated_surface_mac.cc | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/chrome/common/accelerated_surface_mac.cc b/chrome/common/accelerated_surface_mac.cc deleted file mode 100644 index d12ecb6..0000000 --- a/chrome/common/accelerated_surface_mac.cc +++ /dev/null @@ -1,334 +0,0 @@ -// Copyright (c) 2010 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 "chrome/common/accelerated_surface_mac.h" - -#include "base/gfx/rect.h" -#include "base/logging.h" -#include "chrome/common/io_surface_support_mac.h" - -AcceleratedSurface::AcceleratedSurface() - : gl_context_(NULL), - pbuffer_(NULL), - surface_width_(0), - surface_height_(0), - texture_(0), - fbo_(0), - depth_stencil_renderbuffer_(0), - bound_fbo_(0), - bound_renderbuffer_(0) { -} - -bool AcceleratedSurface::Initialize() { - // Create a 1x1 pbuffer and associated context to bootstrap things - static const CGLPixelFormatAttribute attribs[] = { - (CGLPixelFormatAttribute) kCGLPFAPBuffer, - (CGLPixelFormatAttribute) 0 - }; - CGLPixelFormatObj pixel_format; - GLint num_pixel_formats; - if (CGLChoosePixelFormat(attribs, - &pixel_format, - &num_pixel_formats) != kCGLNoError) { - DLOG(ERROR) << "Error choosing pixel format."; - return false; - } - if (!pixel_format) { - return false; - } - CGLContextObj context; - CGLError res = CGLCreateContext(pixel_format, 0, &context); - CGLDestroyPixelFormat(pixel_format); - if (res != kCGLNoError) { - DLOG(ERROR) << "Error creating context."; - return false; - } - CGLPBufferObj pbuffer; - if (CGLCreatePBuffer(1, 1, - GL_TEXTURE_2D, GL_RGBA, - 0, &pbuffer) != kCGLNoError) { - CGLDestroyContext(context); - DLOG(ERROR) << "Error creating pbuffer."; - return false; - } - if (CGLSetPBuffer(context, pbuffer, 0, 0, 0) != kCGLNoError) { - CGLDestroyContext(context); - CGLDestroyPBuffer(pbuffer); - DLOG(ERROR) << "Error attaching pbuffer to context."; - return false; - } - gl_context_ = context; - pbuffer_ = pbuffer; - // Now we're ready to handle SetWindowSize calls, which will - // allocate and/or reallocate the IOSurface and associated offscreen - // OpenGL structures for rendering. - return true; -} - -void AcceleratedSurface::Destroy() { - // Release the old TransportDIB in the browser. - if (dib_free_callback_.get() && transport_dib_.get()) { - dib_free_callback_->Run(transport_dib_->id()); - } - transport_dib_.reset(); - if (gl_context_) - CGLDestroyContext(gl_context_); - if (pbuffer_) - CGLDestroyPBuffer(pbuffer_); -} - -// Call after making changes to the surface which require a visual update. -// Makes the rendering show up in other processes. -void AcceleratedSurface::SwapBuffers() { - if (bound_fbo_ != fbo_) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); - } - if (io_surface_.get() != NULL) { - // Bind and unbind the framebuffer to make changes to the - // IOSurface show up in the other process. - glFlush(); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); - } else if (transport_dib_.get() != NULL) { - // Pre-Mac OS X 10.6, fetch the rendered image from the FBO and copy it - // into the TransportDIB. - // TODO(dspringer): There are a couple of options that can speed this up. - // First is to use async reads into a PBO, second is to use SPI that - // allows many tasks to access the same CGSSurface. - void* pixel_memory = transport_dib_->memory(); - if (pixel_memory) { - // Note that glReadPixels does an implicit glFlush(). - glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - glReadPixels(0, - 0, - surface_width_, - surface_height_, - GL_BGRA, // This pixel format should have no conversion. - GL_UNSIGNED_INT_8_8_8_8_REV, - pixel_memory); - } - } - if (bound_fbo_ != fbo_) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); - } -} - -static void AddBooleanValue(CFMutableDictionaryRef dictionary, - const CFStringRef key, - bool value) { - CFDictionaryAddValue(dictionary, key, - (value ? kCFBooleanTrue : kCFBooleanFalse)); -} - -static void AddIntegerValue(CFMutableDictionaryRef dictionary, - const CFStringRef key, - int32 value) { - CFNumberRef number = CFNumberCreate(NULL, kCFNumberSInt32Type, &value); - CFDictionaryAddValue(dictionary, key, number); -} - -void AcceleratedSurface::AllocateRenderBuffers(GLenum target, - int32 width, int32 height) { - if (!texture_) { - // Generate the texture object. - glGenTextures(1, &texture_); - glBindTexture(target, texture_); - glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - // Generate and bind the framebuffer object. - glGenFramebuffersEXT(1, &fbo_); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); - bound_fbo_ = fbo_; - // Generate (but don't bind) the depth buffer -- we don't need - // this bound in order to do offscreen rendering. - glGenRenderbuffersEXT(1, &depth_stencil_renderbuffer_); - } - - // Reallocate the depth buffer. - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_renderbuffer_); - glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, - GL_DEPTH24_STENCIL8_EXT, - width, - height); - - // Unbind the renderbuffers. - glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, bound_renderbuffer_); - - // Make sure that subsequent set-up code affects the render texture. - glBindTexture(target, texture_); -} - -bool AcceleratedSurface::SetupFrameBufferObject(GLenum target) { - if (bound_fbo_ != fbo_) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); - } - GLenum fbo_status; - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, - GL_COLOR_ATTACHMENT0_EXT, - target, - texture_, - 0); - fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); - if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, - GL_DEPTH_ATTACHMENT_EXT, - GL_RENDERBUFFER_EXT, - depth_stencil_renderbuffer_); - fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); - } - // Attach the depth and stencil buffer. - if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, - 0x8D20, // GL_STENCIL_ATTACHMENT, - GL_RENDERBUFFER_EXT, - depth_stencil_renderbuffer_); - fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); - } - if (bound_fbo_ != fbo_) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); - } - return fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT; -} - -bool AcceleratedSurface::MakeCurrent() { - if (CGLGetCurrentContext() != gl_context_) { - if (CGLSetCurrentContext(gl_context_) != kCGLNoError) { - DLOG(ERROR) << "Unable to make gl context current."; - return false; - } - } - return true; -} - -void AcceleratedSurface::Clear(const gfx::Rect& rect) { - glClearColor(1.0, 1.0, 1.0, 1.0); - glViewport(0, 0, rect.width(), rect.height()); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(0, rect.width(), 0, rect.height(), -1, 1); - glClear(GL_COLOR_BUFFER_BIT); -} - -uint64 AcceleratedSurface::SetSurfaceSize(int32 width, int32 height) { - if (surface_width_ == width && surface_height_ == height) { - // Return 0 to indicate to the caller that no new backing store - // allocation occurred. - return 0; - } - - IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize(); - if (!io_surface_support) - return 0; // Caller can try using SetWindowSizeForTransportDIB(). - - if (!MakeCurrent()) - return 0; - - // GL_TEXTURE_RECTANGLE_ARB is the best supported render target on - // Mac OS X and is required for IOSurface interoperability. - GLenum target = GL_TEXTURE_RECTANGLE_ARB; - AllocateRenderBuffers(target, width, height); - - // Allocate a new IOSurface, which is the GPU resource that can be - // shared across processes. - scoped_cftyperef<CFMutableDictionaryRef> properties; - properties.reset(CFDictionaryCreateMutable(kCFAllocatorDefault, - 0, - &kCFTypeDictionaryKeyCallBacks, - &kCFTypeDictionaryValueCallBacks)); - AddIntegerValue(properties, - io_surface_support->GetKIOSurfaceWidth(), width); - AddIntegerValue(properties, - io_surface_support->GetKIOSurfaceHeight(), height); - AddIntegerValue(properties, - io_surface_support->GetKIOSurfaceBytesPerElement(), 4); - AddBooleanValue(properties, - io_surface_support->GetKIOSurfaceIsGlobal(), true); - // I believe we should be able to unreference the IOSurfaces without - // synchronizing with the browser process because they are - // ultimately reference counted by the operating system. - io_surface_.reset(io_surface_support->IOSurfaceCreate(properties)); - - // Don't think we need to identify a plane. - GLuint plane = 0; - io_surface_support->CGLTexImageIOSurface2D(gl_context_, - target, - GL_RGBA, - width, - height, - GL_BGRA, - GL_UNSIGNED_INT_8_8_8_8_REV, - io_surface_.get(), - plane); - // Set up the frame buffer object. - SetupFrameBufferObject(target); - surface_width_ = width; - surface_height_ = height; - - // Now send back an identifier for the IOSurface. We originally - // intended to send back a mach port from IOSurfaceCreateMachPort - // but it looks like Chrome IPC would need to be modified to - // properly send mach ports between processes. For the time being we - // make our IOSurfaces global and send back their identifiers. On - // the browser process side the identifier is reconstituted into an - // IOSurface for on-screen rendering. - return io_surface_support->IOSurfaceGetID(io_surface_); -} - -TransportDIB::Handle AcceleratedSurface::SetTransportDIBSize( - int32 width, int32 height) { - if (surface_width_ == width && surface_height_ == height) { - // Return an invalid handle to indicate to the caller that no new backing - // store allocation occurred. - return TransportDIB::DefaultHandleValue(); - } - surface_width_ = width; - surface_height_ = height; - - // Release the old TransportDIB in the browser. - if (dib_free_callback_.get() && transport_dib_.get()) { - dib_free_callback_->Run(transport_dib_->id()); - } - transport_dib_.reset(); - - // Ask the renderer to create a TransportDIB. - size_t dib_size = width * 4 * height; // 4 bytes per pixel. - TransportDIB::Handle dib_handle; - if (dib_alloc_callback_.get()) { - dib_alloc_callback_->Run(dib_size, &dib_handle); - } - if (!TransportDIB::is_valid(dib_handle)) { - // If the allocator fails, it means the DIB was not created in the browser, - // so there is no need to run the deallocator here. - return TransportDIB::DefaultHandleValue(); - } - transport_dib_.reset(TransportDIB::Map(dib_handle)); - if (transport_dib_.get() == NULL) { - // TODO(dspringer): if the Map() fails, should the deallocator be run so - // that the DIB is deallocated in the browser? - return TransportDIB::DefaultHandleValue(); - } - - // Set up the render buffers and reserve enough space on the card for the - // framebuffer texture. - GLenum target = GL_TEXTURE_RECTANGLE_ARB; - AllocateRenderBuffers(target, width, height); - glTexImage2D(target, - 0, // mipmap level 0 - GL_RGBA8, // internal pixel format - width, - height, - 0, // 0 border - GL_BGRA, // Used for consistency - GL_UNSIGNED_INT_8_8_8_8_REV, - NULL); // No data, just reserve room on the card. - SetupFrameBufferObject(target); - return transport_dib_->handle(); -} - -void AcceleratedSurface::SetTransportDIBAllocAndFree( - Callback2<size_t, TransportDIB::Handle*>::Type* allocator, - Callback1<TransportDIB::Id>::Type* deallocator) { - dib_alloc_callback_.reset(allocator); - dib_free_callback_.reset(deallocator); -} |