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/** OpenGLResources.hh file for the fluxbox compositor. */
// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#ifndef FBCOMPOSITOR_OPENGLRESOURCES_HH
#define FBCOMPOSITOR_OPENGLRESOURCES_HH
#include "FbTk/RefCount.hh"
#include <GL/glxew.h>
#include <GL/glx.h>
#include <X11/Xlib.h>
namespace FbCompositor {
class OpenGLScreen;
//--- OPENGL BUFFER WRAPPER ------------------------------------------------
/**
* A wrapper for OpenGL buffers.
*/
class OpenGLBuffer {
public:
//--- CONSTRUCTORS AND DESTRUCTORS -------------------------------------
/** Constructor. */
OpenGLBuffer(const OpenGLScreen &screen, GLenum target_buffer);
/** Destructor. */
~OpenGLBuffer();
//--- ACCESSORS --------------------------------------------------------
/** \returns the handle to the buffer held. */
GLuint handle() const;
/** \returns the target of the buffer. */
GLenum target() const;
//--- MUTATORS ---------------------------------------------------------
/** Bind the buffer to its target. */
void bind();
/** Loads the given data into the buffer. */
void bufferData(int element_size, const GLvoid *data, GLenum usage_hint);
/** Sets the buffer's contents to be the rectangle's coordinates on the screen. */
void bufferPosRectangle(int screen_width, int screen_height, XRectangle rect);
private:
//--- CONSTRUCTORS -----------------------------------------------------
/** Copy constructor. */
OpenGLBuffer(const OpenGLBuffer &other);
/** Assignment operator. */
OpenGLBuffer &operator=(const OpenGLBuffer &other);
//--- INTERNALS --------------------------------------------------------
/** The buffer in question. */
GLuint m_buffer;
/** The target buffer. */
GLenum m_target;
/** Screen that manages this buffer. */
const OpenGLScreen &m_screen;
};
// Bind the buffer to its target.
inline void OpenGLBuffer::bind() {
glBindBuffer(m_target, m_buffer);
}
// Loads the given data into the buffer.
inline void OpenGLBuffer::bufferData(int element_size, const GLvoid *data, GLenum usage_hint) {
bind();
glBufferData(m_target, element_size, data, usage_hint);
}
// Returns the handle to the buffer held.
inline GLuint OpenGLBuffer::handle() const {
return m_buffer;
}
// Returns the target of the buffer.
inline GLenum OpenGLBuffer::target() const {
return m_target;
}
/** OpenGL buffer wrapper smart pointer. */
typedef FbTk::RefCount<OpenGLBuffer> OpenGLBufferPtr;
//--- OPENGL TEXTURE WRAPPER -----------------------------------------------
/**
* OpenGL texture wrapper.
*/
class OpenGL2DTexture {
public:
//--- CONSTRUCTORS AND DESTRUCTORS -------------------------------------
/** Constructor. */
OpenGL2DTexture(const OpenGLScreen &screen, bool swizzle_alpha_to_one);
/** Destructor. */
~OpenGL2DTexture();
//--- ACCESSORS --------------------------------------------------------
/** \returns the handle to the texture held. */
GLuint handle() const;
/** \returns the height of the texture. */
int height() const;
/** \returns the width of the texture. */
int width() const;
//--- MUTATORS ---------------------------------------------------------
/** Bind the texture to GL_TEXTURE_2D. */
void bind();
/** Sets the texture's contents to the given pixmap. */
void setPixmap(Pixmap pixmap, bool manage_pixmap, int width, int height, bool force_direct = false);
private:
//--- CONSTRUCTORS -----------------------------------------------------
/** Constructor. */
OpenGL2DTexture(const OpenGL2DTexture &other);
/** Assignment operator. */
OpenGL2DTexture &operator=(const OpenGL2DTexture &other);
//--- INTERNALS --------------------------------------------------------
/** Whether this object manages the pixmap. */
bool m_pixmap_managed;
/** Pixmap of the texture's contents. */
Pixmap m_pixmap;
/** GLX pixmap of the texture's contents. */
GLXPixmap m_glx_pixmap;
/** The texture in question. */
GLuint m_texture;
/** Height of the texture. */
int m_height;
/** Width of the texture. */
int m_width;
/** Current connection to the X server. */
Display *m_display;
/** Screen that manages this texture. */
const OpenGLScreen &m_screen;
};
// Bind the texture to its target.
inline void OpenGL2DTexture::bind() {
glBindTexture(GL_TEXTURE_2D, m_texture);
}
// Returns the handle to the texture held.
inline GLuint OpenGL2DTexture::handle() const {
return m_texture;
}
// Returns the height of the texture.
inline int OpenGL2DTexture::height() const {
return m_height;
}
// Returns the width of the texture.
inline int OpenGL2DTexture::width() const {
return m_width;
}
/** OpenGL texture wrapper smart pointer. */
typedef FbTk::RefCount<OpenGL2DTexture> OpenGL2DTexturePtr;
}
#endif // FBCOMPOSITOR_OPENGLRESOURCES_HH
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