Subversion Repositories Kolibri OS

/*

 * Mesa 3-D graphics library

 *

 * 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

 * 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.

 */

/* 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 

# include 

# include 

struct hud_context;

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 */

   struct hud_context *hud;

};

/**

 * 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