dri_screen.c revision 39c81dada01585a6030f03d215842a1a2ae87d86 
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 "dri_st_api.h"
42#include "dri1_helper.h"
43#ifndef __NOT_HAVE_DRM_H
44#include "dri1.h"
45#include "dri2.h"
46#else
47#include "drisw.h"
48#endif
49
50#include "util/u_inlines.h"
51#include "pipe/p_screen.h"
52#include "pipe/p_format.h"
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   unsigned num_modes;
76   uint8_t depth_bits_array[5];
77   uint8_t stencil_bits_array[5];
78   uint8_t msaa_samples_array[2];
79   unsigned depth_buffer_factor;
80   unsigned back_buffer_factor;
81   unsigned msaa_samples_factor;
82   struct pipe_screen *p_screen = screen->pipe_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,
96					    PIPE_BIND_DEPTH_STENCIL, 0);
97   pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
98					    PIPE_TEXTURE_2D,
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,
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,
105					    PIPE_BIND_DEPTH_STENCIL, 0);
106   pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
107					       PIPE_TEXTURE_2D,
108					       PIPE_BIND_RENDER_TARGET, 0);
109   pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
110					       PIPE_TEXTURE_2D,
111					       PIPE_BIND_RENDER_TARGET, 0);
112   pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
113					     PIPE_TEXTURE_2D,
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,
120                                             PIPE_BIND_DEPTH_STENCIL, 0);
121      pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
122                                             PIPE_TEXTURE_2D,
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   msaa_samples_array[1] = 4;
150   back_buffer_factor = 3;
151   msaa_samples_factor = 2;
152
153   num_modes =
154      depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
155
156   if (pf_r5g6b5)
157      configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
158                                        depth_bits_array, stencil_bits_array,
159                                        depth_buffer_factor, back_buffer_modes,
160                                        back_buffer_factor,
161                                        msaa_samples_array, msaa_samples_factor,
162                                        GL_TRUE);
163
164   if (pf_a8r8g8b8)
165      configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
166                                          depth_bits_array,
167                                          stencil_bits_array,
168                                          depth_buffer_factor,
169                                          back_buffer_modes,
170                                          back_buffer_factor,
171                                          msaa_samples_array,
172                                          msaa_samples_factor,
173                                          GL_TRUE);
174
175   if (pf_x8r8g8b8)
176      configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
177                                          depth_bits_array,
178                                          stencil_bits_array,
179                                          depth_buffer_factor,
180                                          back_buffer_modes,
181                                          back_buffer_factor,
182                                          msaa_samples_array,
183                                          msaa_samples_factor,
184                                          GL_TRUE);
185
186   if (pixel_bits == 16) {
187      configs = configs_r5g6b5;
188      if (configs_a8r8g8b8)
189         configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
190      if (configs_x8r8g8b8)
191	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
192   } else {
193      configs = configs_a8r8g8b8;
194      if (configs_x8r8g8b8)
195	 configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
196      if (configs_r5g6b5)
197         configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
198   }
199
200   if (configs == NULL) {
201      debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
202      return NULL;
203   }
204
205   return (const __DRIconfig **)configs;
206}
207
208/**
209 * Roughly the converse of dri_fill_in_modes.
210 */
211void
212dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
213                   const __GLcontextModes *mode)
214{
215   memset(stvis, 0, sizeof(*stvis));
216
217   stvis->samples = mode->samples;
218   stvis->render_buffer = ST_ATTACHMENT_INVALID;
219
220   if (mode->redBits == 8) {
221      if (mode->alphaBits == 8)
222         stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
223      else
224         stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
225   } else {
226      stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
227   }
228
229   switch (mode->depthBits) {
230   default:
231   case 0:
232      stvis->depth_stencil_format = PIPE_FORMAT_NONE;
233      break;
234   case 16:
235      stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
236      break;
237   case 24:
238      if (mode->stencilBits == 0) {
239	 stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
240                                          PIPE_FORMAT_Z24X8_UNORM:
241                                          PIPE_FORMAT_X8Z24_UNORM;
242      } else {
243	 stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
244                                          PIPE_FORMAT_Z24_UNORM_S8_USCALED:
245                                          PIPE_FORMAT_S8_USCALED_Z24_UNORM;
246      }
247      break;
248   case 32:
249      stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
250      break;
251   }
252
253   stvis->accum_format = (mode->haveAccumBuffer) ?
254      PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
255
256   stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
257   if (mode->doubleBufferMode)
258      stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
259   if (mode->stereoMode) {
260      stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
261      if (mode->doubleBufferMode)
262         stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
263   }
264
265   if (mode->haveDepthBuffer || mode->haveStencilBuffer)
266      stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
267   /* let the state tracker allocate the accum buffer */
268}
269
270#ifndef __NOT_HAVE_DRM_H
271
272/**
273 * Get information about previous buffer swaps.
274 */
275static int
276dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
277{
278   if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
279      return -1;
280   else
281      return 0;
282}
283
284#endif
285
286static void
287dri_destroy_option_cache(struct dri_screen * screen)
288{
289   int i;
290
291   if (screen->optionCache.info) {
292      for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
293         FREE(screen->optionCache.info[i].name);
294         FREE(screen->optionCache.info[i].ranges);
295      }
296      FREE(screen->optionCache.info);
297   }
298
299   FREE(screen->optionCache.values);
300}
301
302void
303dri_destroy_screen_helper(struct dri_screen * screen)
304{
305   dri1_destroy_pipe_context(screen);
306
307   if (screen->smapi)
308      dri_destroy_st_manager(screen->smapi);
309
310   if (screen->pipe_screen)
311      screen->pipe_screen->destroy(screen->pipe_screen);
312
313   dri_destroy_option_cache(screen);
314}
315
316static void
317dri_destroy_screen(__DRIscreen * sPriv)
318{
319   struct dri_screen *screen = dri_screen(sPriv);
320
321   dri_destroy_screen_helper(screen);
322
323   FREE(screen);
324   sPriv->private = NULL;
325   sPriv->extensions = NULL;
326}
327
328const __DRIconfig **
329dri_init_screen_helper(struct dri_screen *screen,
330                       struct pipe_screen *pscreen,
331                       unsigned pixel_bits)
332{
333   screen->pipe_screen = pscreen;
334   if (!screen->pipe_screen) {
335      debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
336      return NULL;
337   }
338
339   screen->smapi = dri_create_st_manager(screen);
340   if (!screen->smapi)
341      return NULL;
342
343   driParseOptionInfo(&screen->optionCache,
344                      __driConfigOptions, __driNConfigOptions);
345
346   return dri_fill_in_modes(screen, pixel_bits);
347}
348
349/**
350 * DRI driver virtual function table.
351 *
352 * DRI versions differ in their implementation of init_screen and swap_buffers.
353 */
354const struct __DriverAPIRec driDriverAPI = {
355   .DestroyScreen = dri_destroy_screen,
356   .CreateContext = dri_create_context,
357   .DestroyContext = dri_destroy_context,
358   .CreateBuffer = dri_create_buffer,
359   .DestroyBuffer = dri_destroy_buffer,
360   .MakeCurrent = dri_make_current,
361   .UnbindContext = dri_unbind_context,
362
363#ifndef __NOT_HAVE_DRM_H
364
365   .GetSwapInfo = dri_get_swap_info,
366   .GetDrawableMSC = driDrawableGetMSC32,
367   .WaitForMSC = driWaitForMSC32,
368   .InitScreen2 = dri2_init_screen,
369
370   .InitScreen = dri1_init_screen,
371   .SwapBuffers = dri1_swap_buffers,
372   .CopySubBuffer = dri1_copy_sub_buffer,
373
374#else
375
376   .InitScreen = drisw_init_screen,
377   .SwapBuffers = drisw_swap_buffers,
378
379#endif
380
381};
382
383/* vim: set sw=3 ts=8 sts=3 expandtab: */
384