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// Copyright 2011 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.
#ifndef PlatformColor_h
#define PlatformColor_h
#include "Extensions3D.h"
#include "GraphicsContext3D.h"
#include "SkTypes.h"
#include <public/WebGraphicsContext3D.h>
namespace WebCore {
class PlatformColor {
public:
static GraphicsContext3D::SourceDataFormat format()
{
return SK_B32_SHIFT ? GraphicsContext3D::SourceFormatRGBA8 : GraphicsContext3D::SourceFormatBGRA8;
}
// Returns the most efficient texture format for this platform.
static GC3Denum bestTextureFormat(WebKit::WebGraphicsContext3D* context, bool supportsBGRA8888)
{
GC3Denum textureFormat = GraphicsContext3D::RGBA;
switch (format()) {
case GraphicsContext3D::SourceFormatRGBA8:
break;
case GraphicsContext3D::SourceFormatBGRA8:
if (supportsBGRA8888)
textureFormat = Extensions3D::BGRA_EXT;
break;
default:
ASSERT_NOT_REACHED();
break;
}
return textureFormat;
}
// Return true if the given texture format has the same component order
// as the color on this platform.
static bool sameComponentOrder(GC3Denum textureFormat)
{
switch (format()) {
case GraphicsContext3D::SourceFormatRGBA8:
return textureFormat == GraphicsContext3D::RGBA;
case GraphicsContext3D::SourceFormatBGRA8:
return textureFormat == Extensions3D::BGRA_EXT;
default:
ASSERT_NOT_REACHED();
return false;
}
}
};
} // namespace WebCore
#endif
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