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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 GLES2Canvas_h
#define GLES2Canvas_h
#if USE(GLES2_RENDERING)
#include "AffineTransform.h"
#include "Color.h"
#include "ColorSpace.h"
#include "GLES2Texture.h"
#include "GraphicsTypes.h"
#include "ImageSource.h"
#include <wtf/HashMap.h>
#include <wtf/Noncopyable.h>
#include <wtf/Vector.h>
namespace WebCore {
class Color;
class FloatRect;
class GraphicsContext3D;
typedef HashMap<NativeImagePtr, RefPtr<GLES2Texture> > TextureHashMap;
class GLES2Canvas : public Noncopyable {
public:
GLES2Canvas(GraphicsContext3D*, const IntSize&);
~GLES2Canvas();
void fillRect(const FloatRect&, const Color&, ColorSpace);
void fillRect(const FloatRect&);
void clearRect(const FloatRect&);
void setFillColor(const Color&, ColorSpace);
void setAlpha(float alpha);
void setCompositeOperation(CompositeOperator);
void translate(float x, float y);
void rotate(float angleInRadians);
void scale(const FloatSize&);
void concatCTM(const AffineTransform&);
void save();
void restore();
// non-standard functions
// These are not standard GraphicsContext functions, and should be pushed
// down into a PlatformContextGLES2 at some point.
void drawTexturedRect(GLES2Texture*, const FloatRect& srcRect, const FloatRect& dstRect, const AffineTransform&, float alpha, ColorSpace, CompositeOperator);
void drawTexturedRect(GLES2Texture*, const FloatRect& srcRect, const FloatRect& dstRect, ColorSpace, CompositeOperator);
GraphicsContext3D* context() { return m_context; }
GLES2Texture* createTexture(NativeImagePtr, GLES2Texture::Format, int width, int height);
GLES2Texture* getTexture(NativeImagePtr);
private:
void drawTexturedRectTile(GLES2Texture* texture, int tile, const FloatRect& srcRect, const FloatRect& dstRect, const AffineTransform&);
void applyCompositeOperator(CompositeOperator);
void checkGLError(const char* header);
unsigned getQuadVertices();
unsigned getSimpleProgram();
unsigned getTexProgram();
GraphicsContext3D* m_context;
struct State;
WTF::Vector<State> m_stateStack;
State* m_state;
unsigned m_quadVertices;
unsigned m_simpleProgram;
unsigned m_texProgram;
int m_simpleMatrixLocation;
int m_simpleColorLocation;
int m_simplePositionLocation;
int m_texMatrixLocation;
int m_texTexMatrixLocation;
int m_texSamplerLocation;
int m_texAlphaLocation;
int m_texPositionLocation;
AffineTransform m_flipMatrix;
TextureHashMap m_textures;
CompositeOperator m_lastCompositeOp; // This is the one last set, not necessarily the one in the state stack.
};
}
#endif
#endif // GLES2Canvas_h
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