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// Copyright (c) 2012 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 UI_GL_SCOPED_BINDERS_H_
#define UI_GL_SCOPED_BINDERS_H_
#include "base/macros.h"
#include "ui/gl/gl_export.h"
namespace gfx {
class GLStateRestorer;
class GL_EXPORT ScopedFrameBufferBinder {
public:
explicit ScopedFrameBufferBinder(unsigned int fbo);
~ScopedFrameBufferBinder();
private:
// Whenever possible we prefer to use the current GLContext's
// GLStateRestorer to maximize driver compabitility.
GLStateRestorer* state_restorer_;
// Failing that we use GL calls to save and restore state.
int old_fbo_;
DISALLOW_COPY_AND_ASSIGN(ScopedFrameBufferBinder);
};
class GL_EXPORT ScopedActiveTexture {
public:
ScopedActiveTexture(unsigned int texture);
~ScopedActiveTexture();
private:
// TODO(dcastagna): Use GLStateRestorer.
int old_texture_;
DISALLOW_COPY_AND_ASSIGN(ScopedActiveTexture);
};
class GL_EXPORT ScopedTextureBinder {
public:
ScopedTextureBinder(unsigned int target, unsigned int id);
~ScopedTextureBinder();
private:
// Whenever possible we prefer to use the current GLContext's
// GLStateRestorer to maximize driver compabitility.
GLStateRestorer* state_restorer_;
// Failing that we use GL calls to save and restore state.
int target_;
int old_id_;
DISALLOW_COPY_AND_ASSIGN(ScopedTextureBinder);
};
class GL_EXPORT ScopedUseProgram {
public:
ScopedUseProgram(unsigned int program);
~ScopedUseProgram();
private:
// TODO(dcastagna): Use GLStateRestorer.
int old_program_;
DISALLOW_COPY_AND_ASSIGN(ScopedUseProgram);
};
class GL_EXPORT ScopedVertexAttribArray {
public:
ScopedVertexAttribArray(unsigned int index,
int size,
unsigned int type,
char normalized,
int stride,
const void* pointer);
~ScopedVertexAttribArray();
private:
// TODO(dcastagna): Use GLStateRestorer.
int buffer_;
int enabled_;
int index_;
int size_;
int type_;
int normalized_;
int stride_;
void* pointer_;
DISALLOW_COPY_AND_ASSIGN(ScopedVertexAttribArray);
};
class GL_EXPORT ScopedBufferBinder {
public:
ScopedBufferBinder(unsigned int target, unsigned int index);
~ScopedBufferBinder();
private:
// TODO(dcastagna): Use GLStateRestorer.
int target_;
int old_id_;
DISALLOW_COPY_AND_ASSIGN(ScopedBufferBinder);
};
class GL_EXPORT ScopedViewport {
public:
ScopedViewport(int x, int y, int width, int height);
~ScopedViewport();
private:
int data_[4] = {};
DISALLOW_COPY_AND_ASSIGN(ScopedViewport);
};
class GL_EXPORT ScopedVertexAttribPointer {
public:
ScopedVertexAttribPointer(unsigned index,
int size,
unsigned type,
char normalized,
int stride,
const void* pointer);
~ScopedVertexAttribPointer();
private:
DISALLOW_COPY_AND_ASSIGN(ScopedVertexAttribPointer);
};
class GL_EXPORT ScopedColorMask {
public:
ScopedColorMask(char red, char green, char blue, char alpha);
~ScopedColorMask();
private:
unsigned char colors_[4] = {};
DISALLOW_COPY_AND_ASSIGN(ScopedColorMask);
};
class GL_EXPORT ScopedCapability {
public:
ScopedCapability(unsigned capability, unsigned char enabled);
~ScopedCapability();
private:
unsigned capability_;
unsigned char enabled_;
DISALLOW_COPY_AND_ASSIGN(ScopedCapability);
};
} // namespace gfx
#endif // UI_GL_SCOPED_BINDERS_H_
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