ui/gl/gl_image_io_surface.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gl/gl_image_io_surface.h"
   6
   7 #include "ui/gl/gl_bindings.h"
   8 #include "ui/gl/gl_context.h"
   9
  10 // Note that this must be included after gl_bindings.h to avoid conflicts.
  11 #include <OpenGL/CGLIOSurface.h>
  12
  13 namespace gfx {
  14
  15 GLImageIOSurface::GLImageIOSurface(const gfx::Size& size) : size_(size) {
  16 }
  17
  18 GLImageIOSurface::~GLImageIOSurface() {
  19   DCHECK(!io_surface_);
  20 }
  21
  22 bool GLImageIOSurface::Initialize(IOSurfaceRef io_surface) {
  23   DCHECK(!io_surface_);
  24   io_surface_.reset(io_surface);
  25   return true;
  26 }
  27
  28 void GLImageIOSurface::Destroy(bool have_context) {
  29   io_surface_.reset();
  30 }
  31
  32 gfx::Size GLImageIOSurface::GetSize() { return size_; }
  33
  34 bool GLImageIOSurface::BindTexImage(unsigned target) {
  35   if (target != GL_TEXTURE_RECTANGLE_ARB) {
  36     // This might be supported in the future. For now, perform strict
  37     // validation so we know what's going on.
  38     LOG(ERROR) << "IOSurface requires TEXTURE_RECTANGLE_ARB target";
  39     return false;
  40   }
  41
  42   CGLContextObj cgl_context =
  43       static_cast<CGLContextObj>(GLContext::GetCurrent()->GetHandle());
  44
  45   DCHECK(io_surface_);
  46   CGLError cgl_error = CGLTexImageIOSurface2D(cgl_context,
  47                                               target,
  48                                               GL_RGBA,
  49                                               size_.width(),
  50                                               size_.height(),
  51                                               GL_BGRA,
  52                                               GL_UNSIGNED_INT_8_8_8_8_REV,
  53                                               io_surface_.get(),
  54                                               0);
  55   if (cgl_error != kCGLNoError) {
  56     LOG(ERROR) << "Error in CGLTexImageIOSurface2D";
  57     return false;
  58   }
  59
  60   return true;
  61 }
  62
  63 bool GLImageIOSurface::CopyTexImage(unsigned target) {
  64   return false;
  65 }
  66
  67 bool GLImageIOSurface::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  68                                             int z_order,
  69                                             OverlayTransform transform,
  70                                             const Rect& bounds_rect,
  71                                             const RectF& crop_rect) {
  72   return false;
  73 }
  74
  75 }  // namespace gfx