ui/gl/gl_surface_android.cc

   1 // Copyright 2014 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_surface.h"
   6
   7 #include "base/logging.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "third_party/khronos/EGL/egl.h"
  10 #include "ui/gfx/native_widget_types.h"
  11 #include "ui/gl/gl_implementation.h"
  12 #include "ui/gl/gl_surface_egl.h"
  13 #include "ui/gl/gl_surface_osmesa.h"
  14 #include "ui/gl/gl_surface_stub.h"
  15
  16 namespace gfx {
  17
  18 // static
  19 bool GLSurface::InitializeOneOffInternal() {
  20   switch (GetGLImplementation()) {
  21     case kGLImplementationEGLGLES2:
  22       if (!GLSurfaceEGL::InitializeOneOff()) {
  23         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
  24         return false;
  25       }
  26     default:
  27       break;
  28   }
  29   return true;
  30 }
  31
  32 // static
  33 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
  34     gfx::AcceleratedWidget window) {
  35   CHECK_NE(kGLImplementationNone, GetGLImplementation());
  36   if (GetGLImplementation() == kGLImplementationOSMesaGL) {
  37     scoped_refptr<GLSurface> surface(new GLSurfaceOSMesaHeadless());
  38     if (!surface->Initialize())
  39       return NULL;
  40     return surface;
  41   }
  42   DCHECK(GetGLImplementation() == kGLImplementationEGLGLES2);
  43   if (window != kNullAcceleratedWidget) {
  44     scoped_refptr<GLSurface> surface = new NativeViewGLSurfaceEGL(window);
  45     if (surface->Initialize())
  46       return surface;
  47   } else {
  48     scoped_refptr<GLSurface> surface = new GLSurfaceStub();
  49     if (surface->Initialize())
  50       return surface;
  51   }
  52   return NULL;
  53 }
  54
  55 // static
  56 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
  57     const gfx::Size& size) {
  58   CHECK_NE(kGLImplementationNone, GetGLImplementation());
  59   switch (GetGLImplementation()) {
  60     case kGLImplementationOSMesaGL: {
  61       scoped_refptr<GLSurface> surface(
  62           new GLSurfaceOSMesa(OSMesaSurfaceFormatBGRA, size));
  63       if (!surface->Initialize())
  64         return NULL;
  65
  66       return surface;
  67     }
  68     case kGLImplementationEGLGLES2: {
  69       scoped_refptr<GLSurface> surface;
  70       if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
  71           (size.width() == 0 && size.height() == 0)) {
  72         surface = new SurfacelessEGL(size);
  73       } else {
  74         surface = new PbufferGLSurfaceEGL(size);
  75       }
  76
  77       if (!surface->Initialize())
  78         return NULL;
  79       return surface;
  80     }
  81     default:
  82       NOTREACHED();
  83       return NULL;
  84   }
  85 }
  86
  87 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
  88   return EGL_DEFAULT_DISPLAY;
  89 }
  90
  91 }  // namespace gfx