src/gallium/winsys/xlib/xmesaP.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef XMESAP_H
  27 #define XMESAP_H
  28
  29
  30 #include "GL/xmesa.h"
  31 #include "mtypes.h"
  32 #ifdef XFree86Server
  33 #include "xm_image.h"
  34 #endif
  35
  36 #include "state_tracker/st_context.h"
  37 #include "state_tracker/st_public.h"
  38
  39
  40 extern _glthread_Mutex _xmesa_lock;
  41
  42 extern XMesaBuffer XMesaBufferList;
  43
  44 /*
  45  */
  46 #define XMESA_SOFTPIPE 1
  47 #define XMESA_AUB      2
  48 extern int xmesa_mode;
  49
  50
  51 /**
  52  * Visual inforation, derived from GLvisual.
  53  * Basically corresponds to an XVisualInfo.
  54  */
  55 struct xmesa_visual {
  56    GLvisual mesa_visual;        /* Device independent visual parameters */
  57    XMesaDisplay *display;       /* The X11 display */
  58 #ifdef XFree86Server
  59    GLint ColormapEntries;
  60    GLint nplanes;
  61 #else
  62    XMesaVisualInfo visinfo;     /* X's visual info (pointer to private copy) */
  63    XVisualInfo *vishandle;      /* Only used in fakeglx.c */
  64 #endif
  65    GLint BitsPerPixel;          /* True bits per pixel for XImages */
  66
  67    GLboolean ximage_flag;       /* Use XImage for back buffer (not pixmap)? */
  68 };
  69
  70
  71 /**
  72  * Context info, derived from st_context.
  73  * Basically corresponds to a GLXContext.
  74  */
  75 struct xmesa_context {
  76    struct st_context *st;
  77    XMesaVisual xm_visual;       /** pixel format info */
  78    XMesaBuffer xm_buffer;       /** current drawbuffer */
  79 };
  80
  81
  82 /**
  83  * Types of X/GLX drawables we might render into.
  84  */
  85 typedef enum {
  86    WINDOW,          /* An X window */
  87    GLXWINDOW,       /* GLX window */
  88    PIXMAP,          /* GLX pixmap */
  89    PBUFFER          /* GLX Pbuffer */
  90 } BufferType;
  91
  92
  93 /**
  94  * Framebuffer information, derived from.
  95  * Basically corresponds to a GLXDrawable.
  96  */
  97 struct xmesa_buffer {
  98    struct st_framebuffer *stfb;
  99
 100    GLboolean wasCurrent;        /* was ever the current buffer? */
 101    XMesaVisual xm_visual;       /* the X/Mesa visual */
 102    XMesaDrawable drawable;      /* Usually the X window ID */
 103    XMesaColormap cmap;          /* the X colormap */
 104    BufferType type;             /* window, pixmap, pbuffer or glxwindow */
 105
 106    XMesaImage *tempImage;
 107    unsigned long selectedEvents;/* for pbuffers only */
 108
 109    GLuint shm;                  /* X Shared Memory extension status:    */
 110                                 /*    0 = not available                 */
 111                                 /*    1 = XImage support available      */
 112                                 /*    2 = Pixmap support available too  */
 113 #if defined(USE_XSHM) && !defined(XFree86Server)
 114    XShmSegmentInfo shminfo;
 115 #endif
 116
 117    XMesaGC gc;                  /* scratch GC for span, line, tri drawing */
 118
 119    /* GLX_EXT_texture_from_pixmap */
 120    GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
 121    GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
 122    GLint TextureMipmap; /** 0 or 1 */
 123
 124    struct xmesa_buffer *Next;   /* Linked list pointer: */
 125 };
 126
 127
 128
 129 /** cast wrapper */
 130 static INLINE XMesaContext
 131 xmesa_context(GLcontext *ctx)
 132 {
 133    return (XMesaContext) ctx->DriverCtx;
 134 }
 135
 136
 137 /** cast wrapper */
 138 static INLINE XMesaBuffer
 139 xmesa_buffer(GLframebuffer *fb)
 140 {
 141    struct st_framebuffer *stfb = (struct st_framebuffer *) fb;
 142    return (XMesaBuffer) st_framebuffer_private(stfb);
 143 }
 144
 145
 146 extern void
 147 xmesa_delete_framebuffer(struct gl_framebuffer *fb);
 148
 149 extern XMesaBuffer
 150 xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis);
 151
 152 extern void
 153 xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
 154
 155 extern void
 156 xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
 157
 158 extern struct pipe_context *
 159 xmesa_create_pipe_context(XMesaContext xm, uint pixelformat);
 160
 161 static INLINE GLuint
 162 xmesa_buffer_width(XMesaBuffer b)
 163 {
 164    return b->stfb->Base.Width;
 165 }
 166
 167 static INLINE GLuint
 168 xmesa_buffer_height(XMesaBuffer b)
 169 {
 170    return b->stfb->Base.Height;
 171 }
 172
 173 extern void
 174 xmesa_display_surface(XMesaBuffer b, const struct pipe_surface *surf);
 175
 176 extern int
 177 xmesa_check_for_xshm(XMesaDisplay *display);
 178
 179 #endif