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/*
* Copyright (c) 2010, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Shader_h
#define Shader_h
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class AffineTransform;
class GraphicsContext3D;
class Color;
class Shader {
WTF_MAKE_NONCOPYABLE(Shader);
public:
enum VertexType {
TwoDimensional,
LoopBlinnInterior,
LoopBlinnExterior
};
enum FillType {
SolidFill,
TextureFill
};
// Currently only applies to the Loop-Blinn vertex type.
enum AntialiasType {
NotAntialiased,
Antialiased
};
protected:
Shader(GraphicsContext3D*, unsigned program);
~Shader();
static String generateVertex(VertexType, FillType);
static String generateFragment(VertexType, FillType, AntialiasType);
static void affineTo3x3(const AffineTransform&, float mat[9]);
static void affineTo4x4(const AffineTransform&, float mat[16]);
static unsigned loadShader(GraphicsContext3D*, unsigned type, const String& shaderSource);
static unsigned loadProgram(GraphicsContext3D*, const String& vertexShaderSource, const String& fragmentShaderSource);
GraphicsContext3D* m_context;
unsigned m_program;
};
}
#endif // Shader_h
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