dom/canvas/WebGLExtensionSRGB.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "WebGLExtensions.h"
   7
   8 #include "GLContext.h"
   9 #include "mozilla/dom/WebGLRenderingContextBinding.h"
  10 #include "WebGLContext.h"
  11
  12 namespace mozilla {
  13
  14 WebGLExtensionSRGB::WebGLExtensionSRGB(WebGLContext* webgl)
  15     : WebGLExtensionBase(webgl)
  16 {
  17     MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
  18
  19     gl::GLContext* gl = webgl->GL();
  20     if (!gl->IsGLES()) {
  21         // Desktop OpenGL requires the following to be enabled in order to
  22         // support sRGB operations on framebuffers.
  23         gl->MakeCurrent();
  24         gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
  25     }
  26 }
  27
  28 WebGLExtensionSRGB::~WebGLExtensionSRGB()
  29 {
  30 }
  31
  32 bool
  33 WebGLExtensionSRGB::IsSupported(const WebGLContext* webgl)
  34 {
  35     gl::GLContext* gl = webgl->GL();
  36
  37     return gl->IsSupported(gl::GLFeature::sRGB);
  38 }
  39
  40
  41 IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionSRGB)
  42
  43 } // namespace mozilla