intel_screen.c revision 0f04a1d3f8989b0a391e6dad80abf06ce151d1f1 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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#include "main/glheader.h"
29#include "main/context.h"
30#include "main/framebuffer.h"
31#include "main/renderbuffer.h"
32
33#include "utils.h"
34#include "vblank.h"
35#include "xmlpool.h"
36
37#include "intel_batchbuffer.h"
38#include "intel_buffers.h"
39#include "intel_bufmgr.h"
40#include "intel_chipset.h"
41#include "intel_extensions.h"
42#include "intel_fbo.h"
43#include "intel_regions.h"
44#include "intel_swapbuffers.h"
45#include "intel_screen.h"
46#include "intel_span.h"
47#include "intel_tex.h"
48
49#include "i915_drm.h"
50#include "i830_dri.h"
51
52
53PUBLIC const char __driConfigOptions[] =
54   DRI_CONF_BEGIN
55   DRI_CONF_SECTION_PERFORMANCE
56      DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
57      DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
58      /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
59       * DRI_CONF_BO_REUSE_ALL
60       */
61      DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
62	 DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
63	    DRI_CONF_ENUM(0, "Disable buffer object reuse")
64	    DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
65	 DRI_CONF_DESC_END
66      DRI_CONF_OPT_END
67   DRI_CONF_SECTION_END
68   DRI_CONF_SECTION_QUALITY
69      DRI_CONF_FORCE_S3TC_ENABLE(false)
70      DRI_CONF_ALLOW_LARGE_TEXTURES(2)
71   DRI_CONF_SECTION_END
72   DRI_CONF_SECTION_DEBUG
73     DRI_CONF_NO_RAST(false)
74     DRI_CONF_ALWAYS_FLUSH_BATCH(false)
75     DRI_CONF_ALWAYS_FLUSH_CACHE(false)
76   DRI_CONF_SECTION_END
77DRI_CONF_END;
78
79const GLuint __driNConfigOptions = 8;
80
81#ifdef USE_NEW_INTERFACE
82static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
83#endif /*USE_NEW_INTERFACE */
84
85/**
86 * Map all the memory regions described by the screen.
87 * \return GL_TRUE if success, GL_FALSE if error.
88 */
89GLboolean
90intelMapScreenRegions(__DRIscreenPrivate * sPriv)
91{
92   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
93
94   if (0)
95      _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
96   if (intelScreen->tex.size != 0) {
97      if (drmMap(sPriv->fd,
98		 intelScreen->tex.handle,
99		 intelScreen->tex.size,
100		 (drmAddress *) & intelScreen->tex.map) != 0) {
101	 intelUnmapScreenRegions(intelScreen);
102	 return GL_FALSE;
103      }
104   }
105
106   return GL_TRUE;
107}
108
109void
110intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
111{
112   if (intelScreen->tex.map) {
113      drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
114      intelScreen->tex.map = NULL;
115   }
116}
117
118
119static void
120intelPrintDRIInfo(intelScreenPrivate * intelScreen,
121                  __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
122{
123   fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
124           intelScreen->front.size, intelScreen->front.offset,
125           intelScreen->pitch);
126   fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
127           intelScreen->back.size, intelScreen->back.offset,
128           intelScreen->pitch);
129   fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
130           intelScreen->depth.size, intelScreen->depth.offset,
131           intelScreen->pitch);
132   fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
133           intelScreen->tex.size, intelScreen->tex.offset);
134   fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
135}
136
137
138static void
139intelPrintSAREA(const drm_i915_sarea_t * sarea)
140{
141   fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
142           sarea->height);
143   fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
144   fprintf(stderr,
145           "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
146           sarea->front_offset, sarea->front_size,
147           (unsigned) sarea->front_handle, sarea->front_tiled);
148   fprintf(stderr,
149           "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
150           sarea->back_offset, sarea->back_size,
151           (unsigned) sarea->back_handle, sarea->back_tiled);
152   fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
153           sarea->depth_offset, sarea->depth_size,
154           (unsigned) sarea->depth_handle, sarea->depth_tiled);
155   fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
156           sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
157}
158
159
160/**
161 * A number of the screen parameters are obtained/computed from
162 * information in the SAREA.  This function updates those parameters.
163 */
164static void
165intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
166                           drm_i915_sarea_t * sarea)
167{
168   intelScreen->width = sarea->width;
169   intelScreen->height = sarea->height;
170   intelScreen->pitch = sarea->pitch;
171
172   intelScreen->front.offset = sarea->front_offset;
173   intelScreen->front.handle = sarea->front_handle;
174   intelScreen->front.size = sarea->front_size;
175   intelScreen->front.tiled = sarea->front_tiled;
176
177   intelScreen->back.offset = sarea->back_offset;
178   intelScreen->back.handle = sarea->back_handle;
179   intelScreen->back.size = sarea->back_size;
180   intelScreen->back.tiled = sarea->back_tiled;
181
182   intelScreen->depth.offset = sarea->depth_offset;
183   intelScreen->depth.handle = sarea->depth_handle;
184   intelScreen->depth.size = sarea->depth_size;
185   intelScreen->depth.tiled = sarea->depth_tiled;
186
187   if (intelScreen->driScrnPriv->ddx_version.minor >= 9) {
188      intelScreen->front.bo_handle = sarea->front_bo_handle;
189      intelScreen->back.bo_handle = sarea->back_bo_handle;
190      intelScreen->depth.bo_handle = sarea->depth_bo_handle;
191   } else {
192      intelScreen->front.bo_handle = -1;
193      intelScreen->back.bo_handle = -1;
194      intelScreen->depth.bo_handle = -1;
195   }
196
197   intelScreen->tex.offset = sarea->tex_offset;
198   intelScreen->logTextureGranularity = sarea->log_tex_granularity;
199   intelScreen->tex.handle = sarea->tex_handle;
200   intelScreen->tex.size = sarea->tex_size;
201
202   if (0)
203      intelPrintSAREA(sarea);
204}
205
206static const __DRItexOffsetExtension intelTexOffsetExtension = {
207   { __DRI_TEX_OFFSET },
208   intelSetTexOffset,
209};
210
211static const __DRItexBufferExtension intelTexBufferExtension = {
212    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
213   intelSetTexBuffer,
214};
215
216static const __DRIextension *intelScreenExtensions[] = {
217    &driReadDrawableExtension,
218    &driCopySubBufferExtension.base,
219    &driSwapControlExtension.base,
220    &driFrameTrackingExtension.base,
221    &driMediaStreamCounterExtension.base,
222    &intelTexOffsetExtension.base,
223    &intelTexBufferExtension.base,
224    NULL
225};
226
227static GLboolean
228intel_get_param(__DRIscreenPrivate *psp, int param, int *value)
229{
230   int ret;
231   struct drm_i915_getparam gp;
232
233   gp.param = param;
234   gp.value = value;
235
236   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
237   if (ret) {
238      fprintf(stderr, "drm_i915_getparam: %d\n", ret);
239      return GL_FALSE;
240   }
241
242   return GL_TRUE;
243}
244
245static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
246{
247   intelScreenPrivate *intelScreen;
248   I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
249   drm_i915_sarea_t *sarea;
250
251   if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
252      fprintf(stderr,
253              "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
254      return GL_FALSE;
255   }
256
257   /* Allocate the private area */
258   intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
259   if (!intelScreen) {
260      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
261      return GL_FALSE;
262   }
263   /* parse information in __driConfigOptions */
264   driParseOptionInfo(&intelScreen->optionCache,
265                      __driConfigOptions, __driNConfigOptions);
266
267   intelScreen->driScrnPriv = sPriv;
268   sPriv->private = (void *) intelScreen;
269   sarea = (drm_i915_sarea_t *)
270      (((GLubyte *) sPriv->pSAREA) + gDRIPriv->sarea_priv_offset);
271   intelScreen->sarea = sarea;
272
273   intelScreen->deviceID = gDRIPriv->deviceID;
274
275   intelUpdateScreenFromSAREA(intelScreen, sarea);
276
277   if (!intelMapScreenRegions(sPriv)) {
278      fprintf(stderr, "\nERROR!  mapping regions\n");
279      _mesa_free(intelScreen);
280      sPriv->private = NULL;
281      return GL_FALSE;
282   }
283
284   if (0)
285      intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
286
287   intelScreen->drmMinor = sPriv->drm_version.minor;
288
289   /* Determine if IRQs are active? */
290   if (!intel_get_param(sPriv, I915_PARAM_IRQ_ACTIVE,
291			&intelScreen->irq_active))
292      return GL_FALSE;
293
294   sPriv->extensions = intelScreenExtensions;
295
296   return GL_TRUE;
297}
298
299
300static void
301intelDestroyScreen(__DRIscreenPrivate * sPriv)
302{
303   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
304
305   dri_bufmgr_destroy(intelScreen->bufmgr);
306   intelUnmapScreenRegions(intelScreen);
307   driDestroyOptionCache(&intelScreen->optionCache);
308
309   FREE(intelScreen);
310   sPriv->private = NULL;
311}
312
313
314/**
315 * This is called when we need to set up GL rendering to a new X window.
316 */
317static GLboolean
318intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
319                  __DRIdrawablePrivate * driDrawPriv,
320                  const __GLcontextModes * mesaVis, GLboolean isPixmap)
321{
322   if (isPixmap) {
323      return GL_FALSE;          /* not implemented */
324   }
325   else {
326      GLboolean swStencil = (mesaVis->stencilBits > 0 &&
327                             mesaVis->depthBits != 24);
328      GLenum rgbFormat;
329
330      struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
331
332      if (!intel_fb)
333	 return GL_FALSE;
334
335      _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
336
337      if (mesaVis->redBits == 5)
338	 rgbFormat = GL_RGB5;
339      else if (mesaVis->alphaBits == 0)
340	 rgbFormat = GL_RGB8;
341      else
342	 rgbFormat = GL_RGBA8;
343
344      /* setup the hardware-based renderbuffers */
345      intel_fb->color_rb[0] = intel_create_renderbuffer(rgbFormat);
346      _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
347			     &intel_fb->color_rb[0]->Base);
348
349      if (mesaVis->doubleBufferMode) {
350	 intel_fb->color_rb[1] = intel_create_renderbuffer(rgbFormat);
351
352         _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
353				&intel_fb->color_rb[1]->Base);
354
355      }
356
357      if (mesaVis->depthBits == 24) {
358	 if (mesaVis->stencilBits == 8) {
359	    /* combined depth/stencil buffer */
360	    struct intel_renderbuffer *depthStencilRb
361	       = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT);
362	    /* note: bind RB to two attachment points */
363	    _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
364				   &depthStencilRb->Base);
365	    _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
366				   &depthStencilRb->Base);
367	 } else {
368	    struct intel_renderbuffer *depthRb
369	       = intel_create_renderbuffer(GL_DEPTH_COMPONENT24);
370	    _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
371				   &depthRb->Base);
372	 }
373      }
374      else if (mesaVis->depthBits == 16) {
375         /* just 16-bit depth buffer, no hw stencil */
376         struct intel_renderbuffer *depthRb
377	    = intel_create_renderbuffer(GL_DEPTH_COMPONENT16);
378         _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
379      }
380
381      /* now add any/all software-based renderbuffers we may need */
382      _mesa_add_soft_renderbuffers(&intel_fb->Base,
383                                   GL_FALSE, /* never sw color */
384                                   GL_FALSE, /* never sw depth */
385                                   swStencil, mesaVis->accumRedBits > 0,
386                                   GL_FALSE, /* never sw alpha */
387                                   GL_FALSE  /* never sw aux */ );
388      driDrawPriv->driverPrivate = (void *) intel_fb;
389
390      return GL_TRUE;
391   }
392}
393
394static void
395intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
396{
397   _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
398}
399
400
401/**
402 * Get information about previous buffer swaps.
403 */
404static int
405intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
406{
407   struct intel_framebuffer *intel_fb;
408
409   if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
410       || (sInfo == NULL)) {
411      return -1;
412   }
413
414   intel_fb = dPriv->driverPrivate;
415   sInfo->swap_count = intel_fb->swap_count;
416   sInfo->swap_ust = intel_fb->swap_ust;
417   sInfo->swap_missed_count = intel_fb->swap_missed_count;
418
419   sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
420      ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
421      : 0.0;
422
423   return 0;
424}
425
426
427/* There are probably better ways to do this, such as an
428 * init-designated function to register chipids and createcontext
429 * functions.
430 */
431extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
432                                   __DRIcontextPrivate * driContextPriv,
433                                   void *sharedContextPrivate);
434
435extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
436                                   __DRIcontextPrivate * driContextPriv,
437                                   void *sharedContextPrivate);
438extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
439				  __DRIcontextPrivate * driContextPriv,
440				  void *sharedContextPrivate);
441
442static GLboolean
443intelCreateContext(const __GLcontextModes * mesaVis,
444                   __DRIcontextPrivate * driContextPriv,
445                   void *sharedContextPrivate)
446{
447   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
448   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
449
450#ifdef I915
451   if (IS_9XX(intelScreen->deviceID)) {
452      if (!IS_965(intelScreen->deviceID)) {
453	 return i915CreateContext(mesaVis, driContextPriv,
454				  sharedContextPrivate);
455      }
456   } else {
457      intelScreen->no_vbo = GL_TRUE;
458      return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
459   }
460#else
461   if (IS_965(intelScreen->deviceID))
462      return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
463#endif
464   fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
465   return GL_FALSE;
466}
467
468
469static __DRIconfig **
470intelFillInModes(__DRIscreenPrivate *psp,
471		 unsigned pixel_bits, unsigned depth_bits,
472                 unsigned stencil_bits, GLboolean have_back_buffer)
473{
474   __DRIconfig **configs;
475   __GLcontextModes *m;
476   unsigned depth_buffer_factor;
477   unsigned back_buffer_factor;
478   int i;
479
480   /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
481    * support pageflipping at all.
482    */
483   static const GLenum back_buffer_modes[] = {
484      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
485   };
486
487   uint8_t depth_bits_array[3];
488   uint8_t stencil_bits_array[3];
489   uint8_t msaa_samples_array[1];
490
491   depth_bits_array[0] = 0;
492   depth_bits_array[1] = depth_bits;
493   depth_bits_array[2] = depth_bits;
494
495   /* Just like with the accumulation buffer, always provide some modes
496    * with a stencil buffer.  It will be a sw fallback, but some apps won't
497    * care about that.
498    */
499   stencil_bits_array[0] = 0;
500   stencil_bits_array[1] = 0;
501   if (depth_bits == 24)
502      stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
503
504   stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
505
506   msaa_samples_array[0] = 0;
507
508   depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
509   back_buffer_factor = (have_back_buffer) ? 3 : 1;
510
511   if (pixel_bits == 16) {
512      configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
513				 depth_bits_array, stencil_bits_array,
514				 depth_buffer_factor, back_buffer_modes,
515				 back_buffer_factor,
516				 msaa_samples_array, 1);
517   }
518   else {
519      __DRIconfig **configs_a8r8g8b8;
520      __DRIconfig **configs_x8r8g8b8;
521
522      configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
523					  depth_bits_array,
524					  stencil_bits_array,
525					  depth_buffer_factor,
526					  back_buffer_modes,
527					  back_buffer_factor,
528					  msaa_samples_array, 1);
529      configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
530					  depth_bits_array,
531					  stencil_bits_array,
532					  depth_buffer_factor,
533					  back_buffer_modes,
534					  back_buffer_factor,
535					  msaa_samples_array, 1);
536      configs = driConcatConfigs(configs_a8r8g8b8, configs_x8r8g8b8);
537   }
538
539   if (configs == NULL) {
540    fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
541              __LINE__);
542      return NULL;
543   }
544
545   /* Mark the visual as slow if there are "fake" stencil bits.
546    */
547   for (i = 0; configs[i]; i++) {
548      m = &configs[i]->modes;
549      if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
550         m->visualRating = GLX_SLOW_CONFIG;
551      }
552   }
553
554   return configs;
555}
556
557static GLboolean
558intel_init_bufmgr(intelScreenPrivate *intelScreen)
559{
560   GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
561   int gem_kernel = 0;
562   GLboolean gem_supported;
563   struct drm_i915_getparam gp;
564   __DRIscreenPrivate *spriv = intelScreen->driScrnPriv;
565
566   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
567
568   gp.param = I915_PARAM_HAS_GEM;
569   gp.value = &gem_kernel;
570
571   (void) drmCommandWriteRead(spriv->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
572
573   /* If we've got a new enough DDX that's initializing GEM and giving us
574    * object handles for the shared buffers, use that.
575    */
576   intelScreen->ttm = GL_FALSE;
577   if (intelScreen->driScrnPriv->dri2.enabled)
578       gem_supported = GL_TRUE;
579   else if (intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
580	    gem_kernel &&
581	    intelScreen->front.bo_handle != -1)
582       gem_supported = GL_TRUE;
583   else
584       gem_supported = GL_FALSE;
585
586   if (!gem_disable && gem_supported) {
587      intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
588      if (intelScreen->bufmgr != NULL)
589	 intelScreen->ttm = GL_TRUE;
590   }
591   /* Otherwise, use the classic buffer manager. */
592   if (intelScreen->bufmgr == NULL) {
593      if (gem_disable) {
594	 fprintf(stderr, "GEM disabled.  Using classic.\n");
595      } else {
596	 fprintf(stderr, "Failed to initialize GEM.  "
597		 "Falling back to classic.\n");
598      }
599
600      if (intelScreen->tex.size == 0) {
601	 fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
602		 __func__, __LINE__);
603	 return GL_FALSE;
604      }
605
606      intelScreen->bufmgr =
607	 intel_bufmgr_fake_init(spriv->fd,
608				intelScreen->tex.offset,
609				intelScreen->tex.map,
610				intelScreen->tex.size,
611				(unsigned int * volatile)
612				&intelScreen->sarea->last_dispatch);
613   }
614
615   /* XXX bufmgr should be per-screen, not per-context */
616   intelScreen->ttm = intelScreen->ttm;
617
618   return GL_TRUE;
619}
620
621/**
622 * This is the driver specific part of the createNewScreen entry point.
623 * Called when using legacy DRI.
624 *
625 * \todo maybe fold this into intelInitDriver
626 *
627 * \return the __GLcontextModes supported by this driver
628 */
629static const __DRIconfig **intelInitScreen(__DRIscreenPrivate *psp)
630{
631   intelScreenPrivate *intelScreen;
632#ifdef I915
633   static const __DRIversion ddx_expected = { 1, 5, 0 };
634#else
635   static const __DRIversion ddx_expected = { 1, 6, 0 };
636#endif
637   static const __DRIversion dri_expected = { 4, 0, 0 };
638   static const __DRIversion drm_expected = { 1, 5, 0 };
639   I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
640
641   if (!driCheckDriDdxDrmVersions2("i915",
642                                   &psp->dri_version, &dri_expected,
643                                   &psp->ddx_version, &ddx_expected,
644                                   &psp->drm_version, &drm_expected)) {
645      return NULL;
646   }
647
648   /* Calling driInitExtensions here, with a NULL context pointer,
649    * does not actually enable the extensions.  It just makes sure
650    * that all the dispatch offsets for all the extensions that
651    * *might* be enables are known.  This is needed because the
652    * dispatch offsets need to be known when _mesa_context_create is
653    * called, but we can't enable the extensions until we have a
654    * context pointer.
655    *
656    * Hello chicken.  Hello egg.  How are you two today?
657    */
658   intelInitExtensions(NULL, GL_TRUE);
659
660   if (!intelInitDriver(psp))
661       return NULL;
662
663   psp->extensions = intelScreenExtensions;
664
665   intelScreen = psp->private;
666   if (!intel_init_bufmgr(intelScreen))
667       return GL_FALSE;
668
669   return (const __DRIconfig **)
670       intelFillInModes(psp, dri_priv->cpp * 8,
671			(dri_priv->cpp == 2) ? 16 : 24,
672			(dri_priv->cpp == 2) ? 0  : 8, 1);
673}
674
675struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
676{
677  /*
678   * This should probably change to have the screen allocate a dummy
679   * context at screen creation. For now just use the current context.
680   */
681
682  GET_CURRENT_CONTEXT(ctx);
683  if (ctx == NULL) {
684     _mesa_problem(NULL, "No current context in intelScreenContext\n");
685     return NULL;
686  }
687  return intel_context(ctx);
688}
689
690/**
691 * This is the driver specific part of the createNewScreen entry point.
692 * Called when using DRI2.
693 *
694 * \return the __GLcontextModes supported by this driver
695 */
696static const
697__DRIconfig **intelInitScreen2(__DRIscreenPrivate *psp)
698{
699   intelScreenPrivate *intelScreen;
700   GLenum fb_format[3];
701   GLenum fb_type[3];
702   /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
703    * support pageflipping at all.
704    */
705   static const GLenum back_buffer_modes[] = {
706      GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
707   };
708   uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
709   int color;
710   __DRIconfig **configs = NULL;
711
712   /* Calling driInitExtensions here, with a NULL context pointer,
713    * does not actually enable the extensions.  It just makes sure
714    * that all the dispatch offsets for all the extensions that
715    * *might* be enables are known.  This is needed because the
716    * dispatch offsets need to be known when _mesa_context_create is
717    * called, but we can't enable the extensions until we have a
718    * context pointer.
719    *
720    * Hello chicken.  Hello egg.  How are you two today?
721    */
722   intelInitExtensions(NULL, GL_TRUE);
723
724   /* Allocate the private area */
725   intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
726   if (!intelScreen) {
727      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
728      return GL_FALSE;
729   }
730   /* parse information in __driConfigOptions */
731   driParseOptionInfo(&intelScreen->optionCache,
732                      __driConfigOptions, __driNConfigOptions);
733
734   intelScreen->driScrnPriv = psp;
735   psp->private = (void *) intelScreen;
736
737   intelScreen->drmMinor = psp->drm_version.minor;
738
739   /* Determine chipset ID */
740   if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
741			&intelScreen->deviceID))
742      return GL_FALSE;
743
744   if (!intel_init_bufmgr(intelScreen))
745       return GL_FALSE;
746
747   intelScreen->irq_active = 1;
748   psp->extensions = intelScreenExtensions;
749
750   depth_bits[0] = 0;
751   stencil_bits[0] = 0;
752   depth_bits[1] = 16;
753   stencil_bits[1] = 0;
754   depth_bits[2] = 24;
755   stencil_bits[2] = 0;
756   depth_bits[3] = 24;
757   stencil_bits[3] = 8;
758
759   msaa_samples_array[0] = 0;
760
761   fb_format[0] = GL_RGB;
762   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
763
764   fb_format[1] = GL_BGR;
765   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
766
767   fb_format[2] = GL_BGRA;
768   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
769
770   depth_bits[0] = 0;
771   stencil_bits[0] = 0;
772
773   for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
774      __DRIconfig **new_configs;
775      int depth_factor;
776
777      /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
778       * with the same cpp as the drawable.  So we can't support depth cpp !=
779       * color cpp currently.
780       */
781      if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
782	 depth_bits[1] = 16;
783	 stencil_bits[1] = 0;
784
785	 depth_factor = 2;
786      } else {
787	 depth_bits[1] = 24;
788	 stencil_bits[1] = 0;
789	 depth_bits[2] = 24;
790	 stencil_bits[2] = 8;
791
792	 depth_factor = 3;
793      }
794      new_configs = driCreateConfigs(fb_format[color], fb_type[color],
795				     depth_bits,
796				     stencil_bits,
797				     depth_factor,
798				     back_buffer_modes,
799				     ARRAY_SIZE(back_buffer_modes),
800				     msaa_samples_array,
801				     ARRAY_SIZE(msaa_samples_array));
802      if (configs == NULL)
803	 configs = new_configs;
804      else
805	 configs = driConcatConfigs(configs, new_configs);
806   }
807
808   if (configs == NULL) {
809      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
810              __LINE__);
811      return NULL;
812   }
813
814   return (const __DRIconfig **)configs;
815}
816
817const struct __DriverAPIRec driDriverAPI = {
818   .InitScreen		 = intelInitScreen,
819   .DestroyScreen	 = intelDestroyScreen,
820   .CreateContext	 = intelCreateContext,
821   .DestroyContext	 = intelDestroyContext,
822   .CreateBuffer	 = intelCreateBuffer,
823   .DestroyBuffer	 = intelDestroyBuffer,
824   .SwapBuffers		 = intelSwapBuffers,
825   .MakeCurrent		 = intelMakeCurrent,
826   .UnbindContext	 = intelUnbindContext,
827   .GetSwapInfo		 = intelGetSwapInfo,
828   .GetDrawableMSC	 = driDrawableGetMSC32,
829   .WaitForMSC		 = driWaitForMSC32,
830   .CopySubBuffer	 = intelCopySubBuffer,
831
832   .InitScreen2		 = intelInitScreen2,
833};
834