/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* 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
* BRIAN PAUL 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.
*/
/* Sample Usage:
In addition to the usual X calls to select a visual, create a colormap
and create a window, you must do the following to use the X/Mesa interface:
1. Call XMesaCreateVisual() to make an XMesaVisual from an XVisualInfo.
2. Call XMesaCreateContext() to create an X/Mesa rendering context, given
the XMesaVisual.
3. Call XMesaCreateWindowBuffer() to create an XMesaBuffer from an X window
and XMesaVisual.
4. Call XMesaMakeCurrent() to bind the XMesaBuffer to an XMesaContext and
to make the context the current one.
5. Make gl* calls to render your graphics.
6. Use XMesaSwapBuffers() when double buffering to swap front/back buffers.
7. Before the X window is destroyed, call XMesaDestroyBuffer().
8. Before exiting, call XMesaDestroyVisual and XMesaDestroyContext.
*/
#ifndef XMESA_H
#define XMESA_H
#include "main/core.h" /* for gl_config */
#include "state_tracker/st_api.h"
#include "os/os_thread.h"
#include "state_tracker/xlib_sw_winsys.h"
# include <X11/Xlib.h>
# include <X11/Xlibint.h>
# include <X11/Xutil.h>
typedef struct xmesa_display *XMesaDisplay;
typedef struct xmesa_buffer *XMesaBuffer;
typedef struct xmesa_context *XMesaContext;
typedef struct xmesa_visual *XMesaVisual;
struct xmesa_display {
pipe_mutex mutex;
Display *display;
struct pipe_screen *screen;
struct st_manager *smapi;
struct pipe_context *pipe;
};
/*
* Create a new X/Mesa visual.
* Input: display - X11 display
* visinfo - an XVisualInfo pointer
* rgb_flag - GL_TRUE = RGB mode,
* GL_FALSE = color index mode
* alpha_flag - alpha buffer requested?
* db_flag - GL_TRUE = double-buffered,
* GL_FALSE = single buffered
* stereo_flag - stereo visual?
* ximage_flag - GL_TRUE = use an XImage for back buffer,
* GL_FALSE = use an off-screen pixmap for back buffer
* depth_size - requested bits/depth values, or zero
* stencil_size - requested bits/stencil values, or zero
* accum_red_size - requested bits/red accum values, or zero
* accum_green_size - requested bits/green accum values, or zero
* accum_blue_size - requested bits/blue accum values, or zero
* accum_alpha_size - requested bits/alpha accum values, or zero
* num_samples - number of samples/pixel if multisampling, or zero
* level - visual level, usually 0
* visualCaveat - ala the GLX extension, usually GLX_NONE_EXT
* Return; a new XMesaVisual or 0 if error.
*/
extern XMesaVisual XMesaCreateVisual( Display *display,
XVisualInfo * visinfo,
GLboolean rgb_flag,
GLboolean alpha_flag,
GLboolean db_flag,
GLboolean stereo_flag,
GLboolean ximage_flag,
GLint depth_size,
GLint stencil_size,
GLint accum_red_size,
GLint accum_green_size,
GLint accum_blue_size,
GLint accum_alpha_size,
GLint num_samples,
GLint level,
GLint visualCaveat );
/*
* Destroy an XMesaVisual, but not the associated XVisualInfo.
*/
extern void XMesaDestroyVisual( XMesaVisual v );
/*
* Create a new XMesaContext for rendering into an X11 window.
*
* Input: visual - an XMesaVisual
* share_list - another XMesaContext with which to share display
* lists or NULL if no sharing is wanted.
* Return: an XMesaContext or NULL if error.
*/
extern XMesaContext XMesaCreateContext( XMesaVisual v,
XMesaContext share_list,
GLuint major, GLuint minor,
GLuint profileMask,
GLuint contextFlags);
/*
* Destroy a rendering context as returned by XMesaCreateContext()
*/
extern void XMesaDestroyContext( XMesaContext c );
/*
* Create an XMesaBuffer from an X window.
*/
extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, Window w );
/*
* Create an XMesaBuffer from an X pixmap.
*/
extern XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v,
Pixmap p,
Colormap cmap );
/*
* Destroy an XMesaBuffer, but not the corresponding window or pixmap.
*/
extern void XMesaDestroyBuffer( XMesaBuffer b );
/*
* Return the XMesaBuffer handle which corresponds to an X drawable, if any.
*
* New in Mesa 2.3.
*/
extern XMesaBuffer XMesaFindBuffer( Display *dpy,
Drawable d );
/*
* Bind two buffers (read and draw) to a context and make the
* context the current one.
* New in Mesa 3.3
*/
extern GLboolean XMesaMakeCurrent2( XMesaContext c,
XMesaBuffer drawBuffer,
XMesaBuffer readBuffer );
/*
* Unbind the current context from its buffer.
*/
extern GLboolean XMesaUnbindContext( XMesaContext c );
/*
* Return a handle to the current context.
*/
extern XMesaContext XMesaGetCurrentContext( void );
/*
* Swap the front and back buffers for the given buffer. No action is
* taken if the buffer is not double buffered.
*/
extern void XMesaSwapBuffers( XMesaBuffer b );
/*
* Copy a sub-region of the back buffer to the front buffer.
*
* New in Mesa 2.6
*/
extern void XMesaCopySubBuffer( XMesaBuffer b,
int x,
int y,
int width,
int height );
/*
* Flush/sync a context
*/
extern void XMesaFlush( XMesaContext c );
/*
* Scan for XMesaBuffers whose window/pixmap has been destroyed, then free
* any memory used by that buffer.
*
* New in Mesa 2.3.
*/
extern void XMesaGarbageCollect( void );
/*
* Create a pbuffer.
* New in Mesa 4.1
*/
extern XMesaBuffer XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
unsigned int width, unsigned int height);
/*
* Texture from Pixmap
* New in Mesa 7.1
*/
extern void
XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
const int *attrib_list);
extern void
XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer);
extern XMesaBuffer
XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
Colormap cmap,
int format, int target, int mipmap);
extern void
XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask);
/***********************************************************************
*/
/**
* Visual inforation, derived from GLvisual.
* Basically corresponds to an XVisualInfo.
*/
struct xmesa_visual {
struct gl_config mesa_visual;/* Device independent visual parameters */
int screen, visualID, visualType;
Display *display; /* The X11 display */
XVisualInfo * visinfo; /* X's visual info (pointer to private copy) */
XVisualInfo *vishandle; /* Only used in fakeglx.c */
GLint BitsPerPixel; /* True bits per pixel for XImages */
GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */
struct st_visual stvis;
};
/**
* Context info, derived from st_context.
* Basically corresponds to a GLXContext.
*/
struct xmesa_context {
struct st_context_iface *st;
XMesaVisual xm_visual; /** pixel format info */
XMesaBuffer xm_buffer; /** current drawbuffer */
XMesaBuffer xm_read_buffer; /** current readbuffer */
};
/**
* Types of X/GLX drawables we might render into.
*/
typedef enum {
WINDOW, /* An X window */
GLXWINDOW, /* GLX window */
PIXMAP, /* GLX pixmap */
PBUFFER /* GLX Pbuffer */
} BufferType;
/**
* Framebuffer information, derived from.
* Basically corresponds to a GLXDrawable.
*/
struct xmesa_buffer {
struct st_framebuffer_iface *stfb;
struct xlib_drawable ws;
GLboolean wasCurrent; /* was ever the current buffer? */
XMesaVisual xm_visual; /* the X/Mesa visual */
Colormap cmap; /* the X colormap */
BufferType type; /* window, pixmap, pbuffer or glxwindow */
GLboolean largestPbuffer; /**< for pbuffers */
GLboolean preservedContents; /**< for pbuffers */
XImage *tempImage;
unsigned long selectedEvents;/* for pbuffers only */
GC gc; /* scratch GC for span, line, tri drawing */
/* GLX_EXT_texture_from_pixmap */
GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
GLint TextureMipmap; /** 0 or 1 */
struct xmesa_buffer *Next; /* Linked list pointer: */
unsigned width, height;
};
extern const char *
xmesa_get_name(void);
extern void
xmesa_init(Display *dpy);
extern XMesaBuffer
xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis);
extern void
xmesa_get_window_size(Display *dpy, XMesaBuffer b,
GLuint *width, GLuint *height);
extern void
xmesa_notify_invalid_buffer(XMesaBuffer b);
extern void
xmesa_check_buffer_size(XMesaBuffer b);
extern void
xmesa_destroy_buffers_on_display(Display *dpy);
static INLINE GLuint
xmesa_buffer_width(XMesaBuffer b)
{
return b->width;
}
static INLINE GLuint
xmesa_buffer_height(XMesaBuffer b)
{
return b->height;
}
extern boolean xmesa_strict_invalidate;
#endif