dri_screen.c revision 4db0c760195c67f1bc114fdfb8464791030a526c 
1/**************************************************************************
2 *
3 * Copyright 2009, VMware, Inc.
4 * 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
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27/*
28 * Author: Keith Whitwell <keithw@vmware.com>
29 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
30 */
31
32#include "utils.h"
33#ifndef __NOT_HAVE_DRM_H
34#include "vblank.h"
35#endif
36#include "xmlpool.h"
37
38#include "dri_screen.h"
39#include "dri_context.h"
40#include "dri_drawable.h"
41#include "dri1_helper.h"
42#ifndef __NOT_HAVE_DRM_H
43#include "dri1.h"
44#include "dri2.h"
45#else
46#include "drisw.h"
47#endif
48
49#include "util/u_inlines.h"
50#include "pipe/p_screen.h"
51#include "pipe/p_format.h"
52#include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
53
54#include "util/u_debug.h"
55
56PUBLIC const char __driConfigOptions[] =
57   DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
58   DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
59   DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
60   DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
61/* DRI_CONF_FORCE_S3TC_ENABLE(false) */
62   DRI_CONF_ALLOW_LARGE_TEXTURES(1)
63   DRI_CONF_SECTION_END DRI_CONF_END;
64
65static const uint __driNConfigOptions = 3;
66
67static const __DRIconfig **
68dri_fill_in_modes(struct dri_screen *screen,
69		  unsigned pixel_bits)
70{
71   __DRIconfig **configs = NULL;
72   __DRIconfig **configs_r5g6b5 = NULL;
73   __DRIconfig **configs_a8r8g8b8 = NULL;
74   __DRIconfig **configs_x8r8g8b8 = NULL;
75   uint8_t depth_bits_array[5];
76   uint8_t stencil_bits_array[5];
77   uint8_t msaa_samples_array[5];
78   unsigned depth_buffer_factor;
79   unsigned back_buffer_factor;
80   unsigned msaa_samples_factor;
81   unsigned i;
82   struct pipe_screen *p_screen = screen->base.screen;
83   boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
84   boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
85
86   static const GLenum back_buffer_modes[] = {
87      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
88   };
89
90   depth_bits_array[0] = 0;
91   stencil_bits_array[0] = 0;
92   depth_buffer_factor = 1;
93
94   pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
95					    PIPE_TEXTURE_2D, 0,
96					    PIPE_BIND_DEPTH_STENCIL, 0);
97   pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
98					    PIPE_TEXTURE_2D, 0,
99					    PIPE_BIND_DEPTH_STENCIL, 0);
100   pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
101					    PIPE_TEXTURE_2D, 0,
102					    PIPE_BIND_DEPTH_STENCIL, 0);
103   pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
104					    PIPE_TEXTURE_2D, 0,
105					    PIPE_BIND_DEPTH_STENCIL, 0);
106   pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
107					       PIPE_TEXTURE_2D, 0,
108					       PIPE_BIND_RENDER_TARGET, 0);
109   pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
110					       PIPE_TEXTURE_2D, 0,
111					       PIPE_BIND_RENDER_TARGET, 0);
112   pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
113					     PIPE_TEXTURE_2D, 0,
114					     PIPE_BIND_RENDER_TARGET, 0);
115
116   /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
117   if (dri_with_format(screen->sPriv)) {
118      pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
119                                             PIPE_TEXTURE_2D, 0,
120                                             PIPE_BIND_DEPTH_STENCIL, 0);
121      pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
122                                             PIPE_TEXTURE_2D, 0,
123                                             PIPE_BIND_DEPTH_STENCIL, 0);
124   } else {
125      pf_z16 = FALSE;
126      pf_z32 = FALSE;
127   }
128
129   if (pf_z16) {
130      depth_bits_array[depth_buffer_factor] = 16;
131      stencil_bits_array[depth_buffer_factor++] = 0;
132   }
133   if (pf_x8z24 || pf_z24x8) {
134      depth_bits_array[depth_buffer_factor] = 24;
135      stencil_bits_array[depth_buffer_factor++] = 0;
136      screen->d_depth_bits_last = pf_x8z24;
137   }
138   if (pf_s8z24 || pf_z24s8) {
139      depth_bits_array[depth_buffer_factor] = 24;
140      stencil_bits_array[depth_buffer_factor++] = 8;
141      screen->sd_depth_bits_last = pf_s8z24;
142   }
143   if (pf_z32) {
144      depth_bits_array[depth_buffer_factor] = 32;
145      stencil_bits_array[depth_buffer_factor++] = 0;
146   }
147
148   msaa_samples_array[0] = 0;
149   back_buffer_factor = 3;
150
151   /* also test color for msaa 2/4/6/8 - just assume it'll work for all depth buffers */
152   if (pf_r5g6b5) {
153      msaa_samples_factor = 1;
154      for (i = 1; i < 5; i++) {
155         if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
156						   PIPE_TEXTURE_2D, i*2,
157						   PIPE_BIND_RENDER_TARGET, 0)) {
158            msaa_samples_array[msaa_samples_factor] = i * 2;
159            msaa_samples_factor++;
160         }
161      }
162
163      configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
164                                        depth_bits_array, stencil_bits_array,
165                                        depth_buffer_factor, back_buffer_modes,
166                                        back_buffer_factor,
167                                        msaa_samples_array, msaa_samples_factor,
168                                        GL_TRUE);
169   }
170
171   if (pf_a8r8g8b8) {
172      msaa_samples_factor = 1;
173      for (i = 1; i < 5; i++) {
174         if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
175						   PIPE_TEXTURE_2D, i*2,
176						   PIPE_BIND_RENDER_TARGET, 0)) {
177            msaa_samples_array[msaa_samples_factor] = i * 2;
178            msaa_samples_factor++;
179         }
180      }
181
182      configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
183                                          depth_bits_array,
184                                          stencil_bits_array,
185                                          depth_buffer_factor,
186                                          back_buffer_modes,
187                                          back_buffer_factor,
188                                          msaa_samples_array,
189                                          msaa_samples_factor,
190                                          GL_TRUE);
191   }
192
193   if (pf_x8r8g8b8) {
194      msaa_samples_factor = 1;
195      for (i = 1; i < 5; i++) {
196         if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
197						   PIPE_TEXTURE_2D, i*2,
198						   PIPE_BIND_RENDER_TARGET, 0)) {
199            msaa_samples_array[msaa_samples_factor] = i * 2;
200            msaa_samples_factor++;
201         }
202      }
203
204      configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
205                                          depth_bits_array,
206                                          stencil_bits_array,
207                                          depth_buffer_factor,
208                                          back_buffer_modes,
209                                          back_buffer_factor,
210                                          msaa_samples_array,
211                                          msaa_samples_factor,
212                                          GL_TRUE);
213   }
214
215   if (pixel_bits == 16) {
216      configs = configs_r5g6b5;
217      if (configs_a8r8g8b8)
218         configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
219      if (configs_x8r8g8b8)
220	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
221   } else {
222      configs = configs_a8r8g8b8;
223      if (configs_x8r8g8b8)
224	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
225      if (configs_r5g6b5)
226         configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
227   }
228
229   if (configs == NULL) {
230      debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
231      return NULL;
232   }
233
234   return (const __DRIconfig **)configs;
235}
236
237/**
238 * Roughly the converse of dri_fill_in_modes.
239 */
240void
241dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
242                   const __GLcontextModes *mode)
243{
244   memset(stvis, 0, sizeof(*stvis));
245
246   stvis->samples = mode->samples;
247   stvis->render_buffer = ST_ATTACHMENT_INVALID;
248
249   if (mode->redBits == 8) {
250      if (mode->alphaBits == 8)
251         stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
252      else
253         stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
254   } else {
255      stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
256   }
257
258   switch (mode->depthBits) {
259   default:
260   case 0:
261      stvis->depth_stencil_format = PIPE_FORMAT_NONE;
262      break;
263   case 16:
264      stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
265      break;
266   case 24:
267      if (mode->stencilBits == 0) {
268	 stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
269                                          PIPE_FORMAT_Z24X8_UNORM:
270                                          PIPE_FORMAT_X8Z24_UNORM;
271      } else {
272	 stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
273                                          PIPE_FORMAT_Z24_UNORM_S8_USCALED:
274                                          PIPE_FORMAT_S8_USCALED_Z24_UNORM;
275      }
276      break;
277   case 32:
278      stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
279      break;
280   }
281
282   stvis->accum_format = (mode->haveAccumBuffer) ?
283      PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
284
285   stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
286   if (mode->doubleBufferMode)
287      stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
288   if (mode->stereoMode) {
289      stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
290      if (mode->doubleBufferMode)
291         stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
292   }
293
294   if (mode->haveDepthBuffer || mode->haveStencilBuffer)
295      stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
296   /* let the state tracker allocate the accum buffer */
297}
298
299#ifndef __NOT_HAVE_DRM_H
300
301/**
302 * Get information about previous buffer swaps.
303 */
304static int
305dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
306{
307   if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
308      return -1;
309   else
310      return 0;
311}
312
313#endif
314
315static boolean
316dri_get_egl_image(struct st_manager *smapi,
317                  struct st_context_iface *stctxi,
318                  void *egl_image,
319                  struct st_egl_image *stimg)
320{
321   struct dri_context *ctx =
322      (struct dri_context *)stctxi->st_manager_private;
323   struct dri_screen *screen = dri_screen(ctx->sPriv);
324   __DRIimage *img = NULL;
325
326   if (screen->lookup_egl_image) {
327      img = screen->lookup_egl_image(ctx, egl_image);
328   }
329
330   if (!img)
331      return FALSE;
332
333   stimg->texture = NULL;
334   pipe_resource_reference(&stimg->texture, img->texture);
335   stimg->face = img->face;
336   stimg->level = img->level;
337   stimg->zslice = img->zslice;
338
339   return TRUE;
340}
341
342static int
343dri_get_param(struct st_manager *smapi,
344              enum st_manager_param param)
345{
346   struct dri_screen *screen = (struct dri_screen *)smapi;
347
348   switch(param) {
349   case ST_MANAGER_BROKEN_INVALIDATE:
350      return screen->broken_invalidate;
351   default:
352      return 0;
353   }
354}
355
356static void
357dri_destroy_option_cache(struct dri_screen * screen)
358{
359   int i;
360
361   if (screen->optionCache.info) {
362      for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
363         FREE(screen->optionCache.info[i].name);
364         FREE(screen->optionCache.info[i].ranges);
365      }
366      FREE(screen->optionCache.info);
367   }
368
369   FREE(screen->optionCache.values);
370}
371
372void
373dri_destroy_screen_helper(struct dri_screen * screen)
374{
375   dri1_destroy_pipe_context(screen);
376
377   if (screen->st_api && screen->st_api->destroy)
378      screen->st_api->destroy(screen->st_api);
379
380   if (screen->base.screen)
381      screen->base.screen->destroy(screen->base.screen);
382
383   dri_destroy_option_cache(screen);
384}
385
386static void
387dri_destroy_screen(__DRIscreen * sPriv)
388{
389   struct dri_screen *screen = dri_screen(sPriv);
390
391   dri_destroy_screen_helper(screen);
392
393   FREE(screen);
394   sPriv->private = NULL;
395   sPriv->extensions = NULL;
396}
397
398const __DRIconfig **
399dri_init_screen_helper(struct dri_screen *screen,
400                       struct pipe_screen *pscreen,
401                       unsigned pixel_bits)
402{
403   screen->base.screen = pscreen;
404   if (!screen->base.screen) {
405      debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
406      return NULL;
407   }
408
409   screen->base.get_egl_image = dri_get_egl_image;
410   screen->base.get_param = dri_get_param;
411   screen->st_api = st_gl_api_create();
412
413   if (!screen->st_api)
414      return NULL;
415
416   driParseOptionInfo(&screen->optionCache,
417                      __driConfigOptions, __driNConfigOptions);
418
419   return dri_fill_in_modes(screen, pixel_bits);
420}
421
422/**
423 * DRI driver virtual function table.
424 *
425 * DRI versions differ in their implementation of init_screen and swap_buffers.
426 */
427const struct __DriverAPIRec driDriverAPI = {
428   .DestroyScreen = dri_destroy_screen,
429   .CreateContext = dri_create_context,
430   .DestroyContext = dri_destroy_context,
431   .CreateBuffer = dri_create_buffer,
432   .DestroyBuffer = dri_destroy_buffer,
433   .MakeCurrent = dri_make_current,
434   .UnbindContext = dri_unbind_context,
435
436#ifndef __NOT_HAVE_DRM_H
437
438   .GetSwapInfo = dri_get_swap_info,
439   .GetDrawableMSC = driDrawableGetMSC32,
440   .WaitForMSC = driWaitForMSC32,
441   .InitScreen2 = dri2_init_screen,
442
443   .InitScreen = dri1_init_screen,
444   .SwapBuffers = dri1_swap_buffers,
445   .CopySubBuffer = dri1_copy_sub_buffer,
446
447#else
448
449   .InitScreen = drisw_init_screen,
450   .SwapBuffers = drisw_swap_buffers,
451
452#endif
453
454};
455
456/* vim: set sw=3 ts=8 sts=3 expandtab: */
457