WebGLCompressedTextureS3TC.cpp   [plain text]

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
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#include "config.h"

#if ENABLE(WEBGL)

#include "WebGLCompressedTextureS3TC.h"

#include "Extensions3D.h"
#include "WebGLRenderingContext.h"

#include <wtf/Int32Array.h>
#include <wtf/OwnArrayPtr.h>

namespace WebCore {

WebGLCompressedTextureS3TC::WebGLCompressedTextureS3TC(WebGLRenderingContext* context)
    : WebGLExtension(context)
{
    context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT);
    context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT);
    context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT);
    context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT);
}

WebGLCompressedTextureS3TC::~WebGLCompressedTextureS3TC()
{
}

WebGLExtension::ExtensionName WebGLCompressedTextureS3TC::getName() const
{
    return WebGLCompressedTextureS3TCName;
}

PassOwnPtr<WebGLCompressedTextureS3TC> WebGLCompressedTextureS3TC::create(WebGLRenderingContext* context)
{
    return adoptPtr(new WebGLCompressedTextureS3TC(context));
}

bool WebGLCompressedTextureS3TC::supported(WebGLRenderingContext* context)
{
    Extensions3D* extensions = context->graphicsContext3D()->getExtensions();
    return extensions->supports("GL_EXT_texture_compression_s3tc")
        || (extensions->supports("GL_EXT_texture_compression_dxt1")
            && extensions->supports("GL_CHROMIUM_texture_compression_dxt3")
            && extensions->supports("GL_CHROMIUM_texture_compression_dxt5"));
}

} // namespace WebCore

#endif // ENABLE(WEBGL)