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