1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26
27 /* Sample Usage:
28
29 In addition to the usual X calls to select a visual, create a colormap
30 and create a window, you must do the following to use the X/Mesa interface:
31
32 1. Call XMesaCreateVisual() to make an XMesaVisual from an XVisualInfo.
33
34 2. Call XMesaCreateContext() to create an X/Mesa rendering context, given
35 the XMesaVisual.
36
37 3. Call XMesaCreateWindowBuffer() to create an XMesaBuffer from an X window
38 and XMesaVisual.
39
40 4. Call XMesaMakeCurrent() to bind the XMesaBuffer to an XMesaContext and
41 to make the context the current one.
42
43 5. Make gl* calls to render your graphics.
44
45 6. Use XMesaSwapBuffers() when double buffering to swap front/back buffers.
46
47 7. Before the X window is destroyed, call XMesaDestroyBuffer().
48
49 8. Before exiting, call XMesaDestroyVisual and XMesaDestroyContext.
50
51 */
52
53
54
55
56 #ifndef XM_API_H
57 #define XM_API_H
58
59
60 #include "main/mtypes.h" /* for gl_config */
61 #include "frontend/api.h"
62 #include "os/os_thread.h"
63
64 #include "frontend/xlibsw_api.h"
65
66 # include <X11/Xlib.h>
67 # include <X11/Xlibint.h>
68 # include <X11/Xutil.h>
69
70 struct hud_context;
71
72 typedef struct xmesa_display *XMesaDisplay;
73 typedef struct xmesa_buffer *XMesaBuffer;
74 typedef struct xmesa_context *XMesaContext;
75 typedef struct xmesa_visual *XMesaVisual;
76
77
78 struct xmesa_display {
79 mtx_t mutex;
80
81 Display *display;
82 struct pipe_screen *screen;
83 struct st_manager *smapi;
84
85 struct pipe_context *pipe;
86 };
87
88
89 /*
90 * Create a new X/Mesa visual.
91 * Input: display - X11 display
92 * visinfo - an XVisualInfo pointer
93 * rgb_flag - GL_TRUE = RGB mode,
94 * GL_FALSE = color index mode
95 * alpha_flag - alpha buffer requested?
96 * db_flag - GL_TRUE = double-buffered,
97 * GL_FALSE = single buffered
98 * stereo_flag - stereo visual?
99 * ximage_flag - GL_TRUE = use an XImage for back buffer,
100 * GL_FALSE = use an off-screen pixmap for back buffer
101 * depth_size - requested bits/depth values, or zero
102 * stencil_size - requested bits/stencil values, or zero
103 * accum_red_size - requested bits/red accum values, or zero
104 * accum_green_size - requested bits/green accum values, or zero
105 * accum_blue_size - requested bits/blue accum values, or zero
106 * accum_alpha_size - requested bits/alpha accum values, or zero
107 * num_samples - number of samples/pixel if multisampling, or zero
108 * level - visual level, usually 0
109 * visualCaveat - ala the GLX extension, usually GLX_NONE_EXT
110 * Return; a new XMesaVisual or 0 if error.
111 */
112 extern XMesaVisual XMesaCreateVisual( Display *display,
113 XVisualInfo * visinfo,
114 GLboolean rgb_flag,
115 GLboolean alpha_flag,
116 GLboolean db_flag,
117 GLboolean stereo_flag,
118 GLboolean ximage_flag,
119 GLint depth_size,
120 GLint stencil_size,
121 GLint accum_red_size,
122 GLint accum_green_size,
123 GLint accum_blue_size,
124 GLint accum_alpha_size,
125 GLint num_samples,
126 GLint level,
127 GLint visualCaveat );
128
129 /*
130 * Destroy an XMesaVisual, but not the associated XVisualInfo.
131 */
132 extern void XMesaDestroyVisual( XMesaVisual v );
133
134
135
136 /*
137 * Create a new XMesaContext for rendering into an X11 window.
138 *
139 * Input: visual - an XMesaVisual
140 * share_list - another XMesaContext with which to share display
141 * lists or NULL if no sharing is wanted.
142 * Return: an XMesaContext or NULL if error.
143 */
144 extern XMesaContext XMesaCreateContext( XMesaVisual v,
145 XMesaContext share_list,
146 GLuint major, GLuint minor,
147 GLuint profileMask,
148 GLuint contextFlags);
149
150
151 /*
152 * Destroy a rendering context as returned by XMesaCreateContext()
153 */
154 extern void XMesaDestroyContext( XMesaContext c );
155
156
157
158 /*
159 * Create an XMesaBuffer from an X window.
160 */
161 extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, Window w );
162
163
164 /*
165 * Create an XMesaBuffer from an X pixmap.
166 */
167 extern XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v,
168 Pixmap p,
169 Colormap cmap );
170
171
172 /*
173 * Destroy an XMesaBuffer, but not the corresponding window or pixmap.
174 */
175 extern void XMesaDestroyBuffer( XMesaBuffer b );
176
177
178 /*
179 * Return the XMesaBuffer handle which corresponds to an X drawable, if any.
180 *
181 * New in Mesa 2.3.
182 */
183 extern XMesaBuffer XMesaFindBuffer( Display *dpy,
184 Drawable d );
185
186
187
188 /*
189 * Bind two buffers (read and draw) to a context and make the
190 * context the current one.
191 * New in Mesa 3.3
192 */
193 extern GLboolean XMesaMakeCurrent2( XMesaContext c,
194 XMesaBuffer drawBuffer,
195 XMesaBuffer readBuffer );
196
197
198 /*
199 * Unbind the current context from its buffer.
200 */
201 extern GLboolean XMesaUnbindContext( XMesaContext c );
202
203
204 /*
205 * Return a handle to the current context.
206 */
207 extern XMesaContext XMesaGetCurrentContext( void );
208
209
210 /*
211 * Swap the front and back buffers for the given buffer. No action is
212 * taken if the buffer is not double buffered.
213 */
214 extern void XMesaSwapBuffers( XMesaBuffer b );
215
216
217 /*
218 * Copy a sub-region of the back buffer to the front buffer.
219 *
220 * New in Mesa 2.6
221 */
222 extern void XMesaCopySubBuffer( XMesaBuffer b,
223 int x,
224 int y,
225 int width,
226 int height );
227
228
229
230
231
232 /*
233 * Flush/sync a context
234 */
235 extern void XMesaFlush( XMesaContext c );
236
237
238
239 /*
240 * Scan for XMesaBuffers whose window/pixmap has been destroyed, then free
241 * any memory used by that buffer.
242 *
243 * New in Mesa 2.3.
244 */
245 extern void XMesaGarbageCollect( void );
246
247
248
249 /*
250 * Create a pbuffer.
251 * New in Mesa 4.1
252 */
253 extern XMesaBuffer XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
254 unsigned int width, unsigned int height);
255
256
257
258 /*
259 * Texture from Pixmap
260 * New in Mesa 7.1
261 */
262 extern void
263 XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
264 const int *attrib_list);
265
266 extern void
267 XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer);
268
269
270 extern XMesaBuffer
271 XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
272 Colormap cmap,
273 int format, int target, int mipmap);
274
275
276 extern void
277 XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask);
278
279
280 /***********************************************************************
281 */
282
283 /**
284 * Visual inforation, derived from GLvisual.
285 * Basically corresponds to an XVisualInfo.
286 */
287 struct xmesa_visual {
288 struct gl_config mesa_visual;/* Device independent visual parameters */
289 int screen, visualID, visualType;
290 Display *display; /* The X11 display */
291 XVisualInfo * visinfo; /* X's visual info (pointer to private copy) */
292 XVisualInfo *vishandle; /* Only used in fakeglx.c */
293 GLint BitsPerPixel; /* True bits per pixel for XImages */
294
295 GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */
296
297 struct st_visual stvis;
298 };
299
300
301 /**
302 * Context info, derived from st_context.
303 * Basically corresponds to a GLXContext.
304 */
305 struct xmesa_context {
306 struct st_context_iface *st;
307 XMesaVisual xm_visual; /** pixel format info */
308 XMesaBuffer xm_buffer; /** current drawbuffer */
309 XMesaBuffer xm_read_buffer; /** current readbuffer */
310 struct hud_context *hud;
311 };
312
313
314 /**
315 * Types of X/GLX drawables we might render into.
316 */
317 typedef enum {
318 WINDOW, /* An X window */
319 GLXWINDOW, /* GLX window */
320 PIXMAP, /* GLX pixmap */
321 PBUFFER /* GLX Pbuffer */
322 } BufferType;
323
324
325 /**
326 * Framebuffer information, derived from.
327 * Basically corresponds to a GLXDrawable.
328 */
329 struct xmesa_buffer {
330 struct st_framebuffer_iface *stfb;
331 struct xlib_drawable ws;
332
333 GLboolean wasCurrent; /* was ever the current buffer? */
334 XMesaVisual xm_visual; /* the X/Mesa visual */
335 Colormap cmap; /* the X colormap */
336 BufferType type; /* window, pixmap, pbuffer or glxwindow */
337
338 GLboolean largestPbuffer; /**< for pbuffers */
339 GLboolean preservedContents; /**< for pbuffers */
340
341 XImage *tempImage;
342 unsigned long selectedEvents;/* for pbuffers only */
343
344
345 GC gc; /* scratch GC for span, line, tri drawing */
346
347 /* GLX_EXT_texture_from_pixmap */
348 GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
349 GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
350 GLint TextureMipmap; /** 0 or 1 */
351
352 struct xmesa_buffer *Next; /* Linked list pointer: */
353
354 unsigned width, height;
355 };
356
357
358
359 extern const char *
360 xmesa_get_name(void);
361
362 extern int
363 xmesa_init(Display *dpy);
364
365 extern XMesaBuffer
366 xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis);
367
368 extern void
369 xmesa_get_window_size(Display *dpy, XMesaBuffer b,
370 GLuint *width, GLuint *height);
371
372 extern void
373 xmesa_notify_invalid_buffer(XMesaBuffer b);
374
375 extern void
376 xmesa_check_buffer_size(XMesaBuffer b);
377
378 extern void
379 xmesa_destroy_buffers_on_display(Display *dpy);
380
381 extern void
382 xmesa_close_display(Display *dpy);
383
384 static inline GLuint
xmesa_buffer_width(XMesaBuffer b)385 xmesa_buffer_width(XMesaBuffer b)
386 {
387 return b->width;
388 }
389
390 static inline GLuint
xmesa_buffer_height(XMesaBuffer b)391 xmesa_buffer_height(XMesaBuffer b)
392 {
393 return b->height;
394 }
395
396 extern boolean xmesa_strict_invalidate;
397
398 #endif
399