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/*
* Copyright (C) 2009 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 WebGLProgram_h
#define WebGLProgram_h
#include "modules/webgl/WebGLShader.h"
#include "modules/webgl/WebGLSharedPlatform3DObject.h"
#include "wtf/PassRefPtr.h"
#include "wtf/Vector.h"
namespace gpu {
namespace gles2 {
class GLES2Interface;
}
}
namespace blink {
class WebGLProgram final : public WebGLSharedPlatform3DObject {
DEFINE_WRAPPERTYPEINFO();
public:
~WebGLProgram() override;
static WebGLProgram* create(WebGLRenderingContextBase*);
unsigned numActiveAttribLocations();
GLint getActiveAttribLocation(GLuint index);
bool isUsingVertexAttrib0();
bool linkStatus();
unsigned linkCount() const { return m_linkCount; }
// This is to be called everytime after the program is successfully linked.
// We don't deal with integer overflow here, assuming in reality a program
// will never be linked so many times.
// Also, we invalidate the cached program info.
void increaseLinkCount();
unsigned activeTransformFeedbackCount() const { return m_activeTransformFeedbackCount; }
void increaseActiveTransformFeedbackCount();
void decreaseActiveTransformFeedbackCount();
WebGLShader* getAttachedShader(GLenum);
bool attachShader(WebGLShader*);
bool detachShader(WebGLShader*);
DECLARE_VIRTUAL_TRACE();
protected:
explicit WebGLProgram(WebGLRenderingContextBase*);
void deleteObjectImpl(WebGraphicsContext3D*) override;
private:
bool isProgram() const override { return true; }
void cacheActiveAttribLocations(WebGraphicsContext3D*, gpu::gles2::GLES2Interface*);
void cacheInfoIfNeeded();
Vector<GLint> m_activeAttribLocations;
GLint m_linkStatus;
// This is used to track whether a WebGLUniformLocation belongs to this
// program or not.
unsigned m_linkCount;
// This is used to track the program being used by active transform
// feedback objects.
unsigned m_activeTransformFeedbackCount;
Member<WebGLShader> m_vertexShader;
Member<WebGLShader> m_fragmentShader;
bool m_infoValid;
};
} // namespace blink
#endif // WebGLProgram_h
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