intel_context.c revision 4006c5e4526a1cdb910500764590e39d32750967 
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
29#include "main/glheader.h"
30#include "main/context.h"
31#include "main/extensions.h"
32//#include "main/matrix.h"
33//#include "main/simple_list.h"
34#include "main/framebuffer.h"
35#include "main/imports.h"
36#include "main/points.h"
37
38#include "swrast/swrast.h"
39#include "swrast_setup/swrast_setup.h"
40#include "tnl/tnl.h"
41
42//#include "tnl/t_pipeline.h"
43//#include "tnl/t_vertex.h"
44
45#include "drivers/common/driverfuncs.h"
46
47#include "intel_screen.h"
48
49#include "i830_dri.h"
50
51#include "intel_chipset.h"
52#include "intel_buffers.h"
53#include "intel_tex.h"
54#include "intel_batchbuffer.h"
55//#include "intel_blit.h"
56#include "intel_clear.h"
57#include "intel_extensions.h"
58#include "intel_pixel.h"
59#include "intel_regions.h"
60#include "intel_buffer_objects.h"
61#include "intel_fbo.h"
62#include "intel_decode.h"
63#include "intel_bufmgr.h"
64#include "intel_swapbuffers.h"
65
66#include "drirenderbuffer.h"
67#include "vblank.h"
68#include "utils.h"
69#include "xmlpool.h"            /* for symbolic values of enum-type options */
70
71
72#ifndef INTEL_DEBUG
73int INTEL_DEBUG = (0);
74#endif
75
76
77#define DRIVER_DATE                     "20090114"
78#define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
79
80
81static const GLubyte *
82intelGetString(GLcontext * ctx, GLenum name)
83{
84   const struct intel_context *const intel = intel_context(ctx);
85   const char *chipset;
86   static char buffer[128];
87
88   switch (name) {
89   case GL_VENDOR:
90      return (GLubyte *) "Tungsten Graphics, Inc";
91      break;
92
93   case GL_RENDERER:
94      switch (intel->intelScreen->deviceID) {
95      case PCI_CHIP_845_G:
96         chipset = "Intel(R) 845G";
97         break;
98      case PCI_CHIP_I830_M:
99         chipset = "Intel(R) 830M";
100         break;
101      case PCI_CHIP_I855_GM:
102         chipset = "Intel(R) 852GM/855GM";
103         break;
104      case PCI_CHIP_I865_G:
105         chipset = "Intel(R) 865G";
106         break;
107      case PCI_CHIP_I915_G:
108         chipset = "Intel(R) 915G";
109         break;
110      case PCI_CHIP_E7221_G:
111	 chipset = "Intel (R) E7221G (i915)";
112	 break;
113      case PCI_CHIP_I915_GM:
114         chipset = "Intel(R) 915GM";
115         break;
116      case PCI_CHIP_I945_G:
117         chipset = "Intel(R) 945G";
118         break;
119      case PCI_CHIP_I945_GM:
120         chipset = "Intel(R) 945GM";
121         break;
122      case PCI_CHIP_I945_GME:
123         chipset = "Intel(R) 945GME";
124         break;
125      case PCI_CHIP_G33_G:
126	 chipset = "Intel(R) G33";
127	 break;
128      case PCI_CHIP_Q35_G:
129	 chipset = "Intel(R) Q35";
130	 break;
131      case PCI_CHIP_Q33_G:
132	 chipset = "Intel(R) Q33";
133	 break;
134      case PCI_CHIP_I965_Q:
135	 chipset = "Intel(R) 965Q";
136	 break;
137      case PCI_CHIP_I965_G:
138      case PCI_CHIP_I965_G_1:
139	 chipset = "Intel(R) 965G";
140	 break;
141      case PCI_CHIP_I946_GZ:
142	 chipset = "Intel(R) 946GZ";
143	 break;
144      case PCI_CHIP_I965_GM:
145	 chipset = "Intel(R) 965GM";
146	 break;
147      case PCI_CHIP_I965_GME:
148	 chipset = "Intel(R) 965GME/GLE";
149	 break;
150      case PCI_CHIP_GM45_GM:
151	 chipset = "Mobile Intel® GM45 Express Chipset";
152	 break;
153      case PCI_CHIP_IGD_E_G:
154	 chipset = "Intel(R) Integrated Graphics Device";
155	 break;
156      case PCI_CHIP_G45_G:
157         chipset = "Intel(R) G45/G43";
158         break;
159      case PCI_CHIP_Q45_G:
160         chipset = "Intel(R) Q45/Q43";
161         break;
162      case PCI_CHIP_G41_G:
163         chipset = "Intel(R) G41";
164         break;
165      default:
166         chipset = "Unknown Intel Chipset";
167         break;
168      }
169
170      (void) driGetRendererString(buffer, chipset,
171				  (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
172				  0);
173      return (GLubyte *) buffer;
174
175   default:
176      return NULL;
177   }
178}
179
180void
181intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
182{
183   struct intel_framebuffer *intel_fb = drawable->driverPrivate;
184   struct intel_renderbuffer *rb;
185   struct intel_region *region, *depth_region;
186   struct intel_context *intel = context->driverPrivate;
187   __DRIbuffer *buffers;
188   __DRIscreen *screen;
189   int i, count;
190   unsigned int attachments[10];
191   uint32_t name;
192   const char *region_name;
193
194   if (INTEL_DEBUG & DEBUG_DRI)
195      fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
196
197   screen = intel->intelScreen->driScrnPriv;
198
199   i = 0;
200   if (intel_fb->color_rb[0])
201      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
202   if (intel_fb->color_rb[1])
203      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
204   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
205      attachments[i++] = __DRI_BUFFER_DEPTH;
206   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
207      attachments[i++] = __DRI_BUFFER_STENCIL;
208
209   buffers = (*screen->dri2.loader->getBuffers)(drawable,
210						&drawable->w,
211						&drawable->h,
212						attachments, i,
213						&count,
214						drawable->loaderPrivate);
215
216   if (buffers == NULL)
217      return;
218
219   drawable->x = 0;
220   drawable->y = 0;
221   drawable->backX = 0;
222   drawable->backY = 0;
223   drawable->numClipRects = 1;
224   drawable->pClipRects[0].x1 = 0;
225   drawable->pClipRects[0].y1 = 0;
226   drawable->pClipRects[0].x2 = drawable->w;
227   drawable->pClipRects[0].y2 = drawable->h;
228   drawable->numBackClipRects = 1;
229   drawable->pBackClipRects[0].x1 = 0;
230   drawable->pBackClipRects[0].y1 = 0;
231   drawable->pBackClipRects[0].x2 = drawable->w;
232   drawable->pBackClipRects[0].y2 = drawable->h;
233
234   depth_region = NULL;
235   for (i = 0; i < count; i++) {
236       switch (buffers[i].attachment) {
237       case __DRI_BUFFER_FRONT_LEFT:
238	   rb = intel_fb->color_rb[0];
239	   region_name = "dri2 front buffer";
240	   break;
241
242       case __DRI_BUFFER_BACK_LEFT:
243	   rb = intel_fb->color_rb[1];
244	   region_name = "dri2 back buffer";
245	   break;
246
247       case __DRI_BUFFER_DEPTH:
248	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
249	   region_name = "dri2 depth buffer";
250	   break;
251
252       case __DRI_BUFFER_STENCIL:
253	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
254	   region_name = "dri2 stencil buffer";
255	   break;
256
257       case __DRI_BUFFER_ACCUM:
258       default:
259	   fprintf(stderr,
260		   "unhandled buffer attach event, attacment type %d\n",
261		   buffers[i].attachment);
262	   return;
263       }
264
265       if (rb->region) {
266	  dri_bo_flink(rb->region->buffer, &name);
267	  if (name == buffers[i].name)
268	     continue;
269       }
270
271       if (INTEL_DEBUG & DEBUG_DRI)
272	  fprintf(stderr,
273		  "attaching buffer %d, at %d, cpp %d, pitch %d\n",
274		  buffers[i].name, buffers[i].attachment,
275		  buffers[i].cpp, buffers[i].pitch);
276
277       if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
278	  if (INTEL_DEBUG & DEBUG_DRI)
279	     fprintf(stderr, "(reusing depth buffer as stencil)\n");
280	  intel_region_reference(&region, depth_region);
281       }
282       else
283          region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
284						 drawable->w,
285						 drawable->h,
286						 buffers[i].pitch / buffers[i].cpp,
287						 buffers[i].name,
288						 region_name);
289
290       if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
291	  depth_region = region;
292
293       intel_renderbuffer_set_region(rb, region);
294       intel_region_release(&region);
295   }
296
297   driUpdateFramebufferSize(&intel->ctx, drawable);
298}
299
300void
301intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
302{
303    struct intel_context *intel = intel_context(ctx);
304    __DRIcontext *driContext = intel->driContext;
305    void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
306			 GLsizei w, GLsizei h);
307
308    if (!driContext->driScreenPriv->dri2.enabled)
309	return;
310
311    intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
312    if (driContext->driDrawablePriv != driContext->driReadablePriv)
313	intel_update_renderbuffers(driContext, driContext->driReadablePriv);
314
315    old_viewport = ctx->Driver.Viewport;
316    ctx->Driver.Viewport = NULL;
317    intel->driDrawable = driContext->driDrawablePriv;
318    intelWindowMoved(intel);
319    intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
320    ctx->Driver.Viewport = old_viewport;
321}
322
323
324static const struct dri_debug_control debug_control[] = {
325   { "tex",   DEBUG_TEXTURE},
326   { "state", DEBUG_STATE},
327   { "ioctl", DEBUG_IOCTL},
328   { "blit",  DEBUG_BLIT},
329   { "mip",   DEBUG_MIPTREE},
330   { "fall",  DEBUG_FALLBACKS},
331   { "verb",  DEBUG_VERBOSE},
332   { "bat",   DEBUG_BATCH},
333   { "pix",   DEBUG_PIXEL},
334   { "buf",   DEBUG_BUFMGR},
335   { "reg",   DEBUG_REGION},
336   { "fbo",   DEBUG_FBO},
337   { "lock",  DEBUG_LOCK},
338   { "sync",  DEBUG_SYNC},
339   { "prim",  DEBUG_PRIMS },
340   { "vert",  DEBUG_VERTS },
341   { "dri",   DEBUG_DRI },
342   { "dma",   DEBUG_DMA },
343   { "san",   DEBUG_SANITY },
344   { "sleep", DEBUG_SLEEP },
345   { "stats", DEBUG_STATS },
346   { "tile",  DEBUG_TILE },
347   { "sing",  DEBUG_SINGLE_THREAD },
348   { "thre",  DEBUG_SINGLE_THREAD },
349   { "wm",    DEBUG_WM },
350   { "urb",   DEBUG_URB },
351   { "vs",    DEBUG_VS },
352   { NULL,    0 }
353};
354
355
356static void
357intelInvalidateState(GLcontext * ctx, GLuint new_state)
358{
359    struct intel_context *intel = intel_context(ctx);
360
361   _swrast_InvalidateState(ctx, new_state);
362   _swsetup_InvalidateState(ctx, new_state);
363   _vbo_InvalidateState(ctx, new_state);
364   _tnl_InvalidateState(ctx, new_state);
365   _tnl_invalidate_vertex_state(ctx, new_state);
366
367   intel->NewGLState |= new_state;
368
369   if (intel->vtbl.invalidate_state)
370      intel->vtbl.invalidate_state( intel, new_state );
371}
372
373
374void
375intelFlush(GLcontext * ctx)
376{
377   struct intel_context *intel = intel_context(ctx);
378
379   if (intel->Fallback)
380      _swrast_flush(ctx);
381
382   if (!IS_965(intel->intelScreen->deviceID))
383      INTEL_FIREVERTICES(intel);
384
385   /* Emit a flush so that any frontbuffer rendering that might have occurred
386    * lands onscreen in a timely manner, even if the X Server doesn't trigger
387    * a flush for us.
388    */
389   intel_batchbuffer_emit_mi_flush(intel->batch);
390
391   if (intel->batch->map != intel->batch->ptr)
392      intel_batchbuffer_flush(intel->batch);
393}
394
395void
396intelFinish(GLcontext * ctx)
397{
398   struct gl_framebuffer *fb = ctx->DrawBuffer;
399   int i;
400
401   intelFlush(ctx);
402
403   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
404       struct intel_renderbuffer *irb;
405
406       irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
407
408       if (irb->region)
409	  dri_bo_wait_rendering(irb->region->buffer);
410   }
411   if (fb->_DepthBuffer) {
412      /* XXX: Wait on buffer idle */
413   }
414}
415
416void
417intelInitDriverFunctions(struct dd_function_table *functions)
418{
419   _mesa_init_driver_functions(functions);
420
421   functions->Flush = intelFlush;
422   functions->Finish = intelFinish;
423   functions->GetString = intelGetString;
424   functions->UpdateState = intelInvalidateState;
425
426   functions->CopyColorTable = _swrast_CopyColorTable;
427   functions->CopyColorSubTable = _swrast_CopyColorSubTable;
428   functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
429   functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
430
431   intelInitTextureFuncs(functions);
432   intelInitStateFuncs(functions);
433   intelInitClearFuncs(functions);
434   intelInitBufferFuncs(functions);
435   intelInitPixelFuncs(functions);
436}
437
438
439GLboolean
440intelInitContext(struct intel_context *intel,
441                 const __GLcontextModes * mesaVis,
442                 __DRIcontextPrivate * driContextPriv,
443                 void *sharedContextPrivate,
444                 struct dd_function_table *functions)
445{
446   GLcontext *ctx = &intel->ctx;
447   GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
448   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
449   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
450   int fthrottle_mode;
451
452   if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
453                                 functions, (void *) intel)) {
454      _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
455      return GL_FALSE;
456   }
457
458   driContextPriv->driverPrivate = intel;
459   intel->intelScreen = intelScreen;
460   intel->driScreen = sPriv;
461   intel->sarea = intelScreen->sarea;
462   intel->driContext = driContextPriv;
463
464   /* Dri stuff */
465   intel->hHWContext = driContextPriv->hHWContext;
466   intel->driFd = sPriv->fd;
467   intel->driHwLock = sPriv->lock;
468
469   driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
470                       intel->driScreen->myNum,
471		       IS_965(intelScreen->deviceID) ? "i965" : "i915");
472   if (intelScreen->deviceID == PCI_CHIP_I865_G)
473      intel->maxBatchSize = 4096;
474   else
475      intel->maxBatchSize = BATCH_SZ;
476
477   intel->bufmgr = intelScreen->bufmgr;
478   intel->ttm = intelScreen->ttm;
479   if (intel->ttm) {
480      int bo_reuse_mode;
481
482      bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
483      switch (bo_reuse_mode) {
484      case DRI_CONF_BO_REUSE_DISABLED:
485	 break;
486      case DRI_CONF_BO_REUSE_ALL:
487	 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
488	 break;
489      }
490   }
491
492   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
493
494   /* This doesn't yet catch all non-conformant rendering, but it's a
495    * start.
496    */
497   if (getenv("INTEL_STRICT_CONFORMANCE")) {
498      intel->strict_conformance = 1;
499   }
500
501   if (intel->strict_conformance) {
502      ctx->Const.MinLineWidth = 1.0;
503      ctx->Const.MinLineWidthAA = 1.0;
504      ctx->Const.MaxLineWidth = 1.0;
505      ctx->Const.MaxLineWidthAA = 1.0;
506      ctx->Const.LineWidthGranularity = 1.0;
507   }
508   else {
509      ctx->Const.MinLineWidth = 1.0;
510      ctx->Const.MinLineWidthAA = 1.0;
511      ctx->Const.MaxLineWidth = 5.0;
512      ctx->Const.MaxLineWidthAA = 5.0;
513      ctx->Const.LineWidthGranularity = 0.5;
514   }
515
516   ctx->Const.MinPointSize = 1.0;
517   ctx->Const.MinPointSizeAA = 1.0;
518   ctx->Const.MaxPointSize = 255.0;
519   ctx->Const.MaxPointSizeAA = 3.0;
520   ctx->Const.PointSizeGranularity = 1.0;
521
522   /* reinitialize the context point state.
523    * It depend on constants in __GLcontextRec::Const
524    */
525   _mesa_init_point(ctx);
526
527   ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
528
529   /* Initialize the software rasterizer and helper modules. */
530   _swrast_CreateContext(ctx);
531   _vbo_CreateContext(ctx);
532   _tnl_CreateContext(ctx);
533   _swsetup_CreateContext(ctx);
534
535   /* Configure swrast to match hardware characteristics: */
536   _swrast_allow_pixel_fog(ctx, GL_FALSE);
537   _swrast_allow_vertex_fog(ctx, GL_TRUE);
538
539   intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
540   intel->hw_stipple = 1;
541
542   /* XXX FBO: this doesn't seem to be used anywhere */
543   switch (mesaVis->depthBits) {
544   case 0:                     /* what to do in this case? */
545   case 16:
546      intel->polygon_offset_scale = 1.0;
547      break;
548   case 24:
549      intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
550      break;
551   default:
552      assert(0);
553      break;
554   }
555
556   if (IS_965(intelScreen->deviceID))
557      intel->polygon_offset_scale /= 0xffff;
558
559   intel->RenderIndex = ~0;
560
561   fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
562   intel->irqsEmitted = 0;
563
564   intel->do_irqs = (intel->intelScreen->irq_active &&
565                     fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
566
567   intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
568
569   _math_matrix_ctr(&intel->ViewportMatrix);
570
571   if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
572      _mesa_printf("IRQs not active.  Exiting\n");
573      exit(1);
574   }
575
576   intelInitExtensions(ctx, GL_FALSE);
577
578   INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
579   if (INTEL_DEBUG & DEBUG_BUFMGR)
580      dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
581
582   if (!sPriv->dri2.enabled)
583      intel_recreate_static_regions(intel);
584
585   intel->batch = intel_batchbuffer_alloc(intel);
586
587   intel_bufferobj_init(intel);
588   intel_fbo_init(intel);
589
590   if (intel->ctx.Mesa_DXTn) {
591      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
592      _mesa_enable_extension(ctx, "GL_S3_s3tc");
593   }
594   else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
595      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
596   }
597
598   intel->prim.primitive = ~0;
599
600   /* Force all software fallbacks */
601   if (driQueryOptionb(&intel->optionCache, "no_rast")) {
602      fprintf(stderr, "disabling 3D rasterization\n");
603      intel->no_rast = 1;
604   }
605
606   /* Disable all hardware rendering (skip emitting batches and fences/waits
607    * to the kernel)
608    */
609   intel->no_hw = getenv("INTEL_NO_HW") != NULL;
610
611   return GL_TRUE;
612}
613
614void
615intelDestroyContext(__DRIcontextPrivate * driContextPriv)
616{
617   struct intel_context *intel =
618      (struct intel_context *) driContextPriv->driverPrivate;
619
620   assert(intel);               /* should never be null */
621   if (intel) {
622      GLboolean release_texture_heaps;
623
624      INTEL_FIREVERTICES(intel);
625
626      intel->vtbl.destroy(intel);
627
628      release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
629      _swsetup_DestroyContext(&intel->ctx);
630      _tnl_DestroyContext(&intel->ctx);
631      _vbo_DestroyContext(&intel->ctx);
632
633      _swrast_DestroyContext(&intel->ctx);
634      intel->Fallback = 0;      /* don't call _swrast_Flush later */
635
636      intel_batchbuffer_free(intel->batch);
637      intel->batch = NULL;
638
639      free(intel->prim.vb);
640      intel->prim.vb = NULL;
641      dri_bo_unreference(intel->prim.vb_bo);
642      intel->prim.vb_bo = NULL;
643
644      if (release_texture_heaps) {
645         /* This share group is about to go away, free our private
646          * texture object data.
647          */
648         if (INTEL_DEBUG & DEBUG_TEXTURE)
649            fprintf(stderr, "do something to free texture heaps\n");
650      }
651
652      intel_region_release(&intel->front_region);
653      intel_region_release(&intel->back_region);
654      intel_region_release(&intel->depth_region);
655
656      driDestroyOptionCache(&intel->optionCache);
657
658      /* free the Mesa context */
659      _mesa_free_context_data(&intel->ctx);
660   }
661}
662
663GLboolean
664intelUnbindContext(__DRIcontextPrivate * driContextPriv)
665{
666   return GL_TRUE;
667}
668
669GLboolean
670intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
671                 __DRIdrawablePrivate * driDrawPriv,
672                 __DRIdrawablePrivate * driReadPriv)
673{
674   __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
675
676   if (driContextPriv) {
677      struct intel_context *intel =
678         (struct intel_context *) driContextPriv->driverPrivate;
679      struct intel_framebuffer *intel_fb =
680	 (struct intel_framebuffer *) driDrawPriv->driverPrivate;
681      GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
682
683      if (driContextPriv->driScreenPriv->dri2.enabled) {
684          intel_update_renderbuffers(driContextPriv, driDrawPriv);
685          if (driDrawPriv != driReadPriv)
686              intel_update_renderbuffers(driContextPriv, driReadPriv);
687      } else {
688          /* XXX FBO temporary fix-ups! */
689          /* if the renderbuffers don't have regions, init them from the context */
690         struct intel_renderbuffer *irbDepth
691            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
692         struct intel_renderbuffer *irbStencil
693            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
694
695         if (intel_fb->color_rb[0]) {
696	    intel_renderbuffer_set_region(intel_fb->color_rb[0],
697					  intel->front_region);
698         }
699         if (intel_fb->color_rb[1]) {
700	    intel_renderbuffer_set_region(intel_fb->color_rb[1],
701					  intel->back_region);
702         }
703
704         if (irbDepth) {
705	    intel_renderbuffer_set_region(irbDepth, intel->depth_region);
706         }
707         if (irbStencil) {
708	    intel_renderbuffer_set_region(irbStencil, intel->depth_region);
709         }
710      }
711
712      /* set GLframebuffer size to match window, if needed */
713      driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
714
715      if (driReadPriv != driDrawPriv) {
716	 driUpdateFramebufferSize(&intel->ctx, driReadPriv);
717      }
718
719      _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
720
721      /* The drawbuffer won't always be updated by _mesa_make_current:
722       */
723      if (intel->ctx.DrawBuffer == &intel_fb->Base) {
724
725	 if (intel->driReadDrawable != driReadPriv)
726	    intel->driReadDrawable = driReadPriv;
727
728	 if (intel->driDrawable != driDrawPriv) {
729	    if (driDrawPriv->swap_interval == (unsigned)-1) {
730	       int i;
731
732	       driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
733		  ? driGetDefaultVBlankFlags(&intel->optionCache)
734		 : VBLANK_FLAG_NO_IRQ;
735
736	       /* Prevent error printf if one crtc is disabled, this will
737		* be properly calculated in intelWindowMoved() next.
738		*/
739		driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
740
741	       (*psp->systemTime->getUST) (&intel_fb->swap_ust);
742	       driDrawableInitVBlank(driDrawPriv);
743	       intel_fb->vbl_waited = driDrawPriv->vblSeq;
744
745	       for (i = 0; i < 2; i++) {
746		  if (intel_fb->color_rb[i])
747		     intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
748	       }
749	    }
750	    intel->driDrawable = driDrawPriv;
751	    intelWindowMoved(intel);
752	 }
753
754	 intel_draw_buffer(&intel->ctx, &intel_fb->Base);
755      }
756   }
757   else {
758      _mesa_make_current(NULL, NULL, NULL);
759   }
760
761   return GL_TRUE;
762}
763
764static void
765intelContendedLock(struct intel_context *intel, GLuint flags)
766{
767   __DRIdrawablePrivate *dPriv = intel->driDrawable;
768   __DRIscreenPrivate *sPriv = intel->driScreen;
769   volatile drm_i915_sarea_t *sarea = intel->sarea;
770   int me = intel->hHWContext;
771
772   drmGetLock(intel->driFd, intel->hHWContext, flags);
773   intel->locked = 1;
774
775   if (INTEL_DEBUG & DEBUG_LOCK)
776      _mesa_printf("%s - got contended lock\n", __progname);
777
778   /* If the window moved, may need to set a new cliprect now.
779    *
780    * NOTE: This releases and regains the hw lock, so all state
781    * checking must be done *after* this call:
782    */
783   if (dPriv)
784       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
785
786   if (sarea && sarea->ctxOwner != me) {
787      if (INTEL_DEBUG & DEBUG_BUFMGR) {
788	 fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
789		 sarea->ctxOwner, me);
790      }
791      sarea->ctxOwner = me;
792   }
793
794   /* If the last consumer of the texture memory wasn't us, notify the fake
795    * bufmgr and record the new owner.  We should have the memory shared
796    * between contexts of a single fake bufmgr, but this will at least make
797    * things correct for now.
798    */
799   if (!intel->ttm && sarea->texAge != intel->hHWContext) {
800      sarea->texAge = intel->hHWContext;
801      intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
802      if (INTEL_DEBUG & DEBUG_BATCH)
803	 intel_decode_context_reset();
804      if (INTEL_DEBUG & DEBUG_BUFMGR)
805	 fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
806		 sarea->ctxOwner, intel->hHWContext);
807   }
808
809   /* Drawable changed?
810    */
811   if (dPriv && intel->lastStamp != dPriv->lastStamp) {
812       intelWindowMoved(intel);
813       intel->lastStamp = dPriv->lastStamp;
814   }
815}
816
817
818_glthread_DECLARE_STATIC_MUTEX(lockMutex);
819
820/* Lock the hardware and validate our state.
821 */
822void LOCK_HARDWARE( struct intel_context *intel )
823{
824    __DRIdrawable *dPriv = intel->driDrawable;
825    __DRIscreen *sPriv = intel->driScreen;
826    char __ret = 0;
827    struct intel_framebuffer *intel_fb = NULL;
828    struct intel_renderbuffer *intel_rb = NULL;
829
830    _glthread_LOCK_MUTEX(lockMutex);
831    assert(!intel->locked);
832    intel->locked = 1;
833
834    if (intel->driDrawable) {
835       intel_fb = intel->driDrawable->driverPrivate;
836
837       if (intel_fb)
838	  intel_rb =
839	     intel_get_renderbuffer(&intel_fb->Base,
840				    intel_fb->Base._ColorDrawBufferIndexes[0]);
841    }
842
843    if (intel_rb && dPriv->vblFlags &&
844	!(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
845	(intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
846	drmVBlank vbl;
847
848	vbl.request.type = DRM_VBLANK_ABSOLUTE;
849
850	if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
851	    vbl.request.type |= DRM_VBLANK_SECONDARY;
852	}
853
854	vbl.request.sequence = intel_rb->vbl_pending;
855	drmWaitVBlank(intel->driFd, &vbl);
856	intel_fb->vbl_waited = vbl.reply.sequence;
857    }
858
859    if (!sPriv->dri2.enabled) {
860	DRM_CAS(intel->driHwLock, intel->hHWContext,
861		(DRM_LOCK_HELD|intel->hHWContext), __ret);
862
863	if (__ret)
864	    intelContendedLock( intel, 0 );
865    }
866
867
868    if (INTEL_DEBUG & DEBUG_LOCK)
869      _mesa_printf("%s - locked\n", __progname);
870}
871
872
873/* Unlock the hardware using the global current context
874 */
875void UNLOCK_HARDWARE( struct intel_context *intel )
876{
877    __DRIscreen *sPriv = intel->driScreen;
878
879   intel->vtbl.note_unlock( intel );
880   intel->locked = 0;
881
882   if (!sPriv->dri2.enabled)
883      DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
884
885   _glthread_UNLOCK_MUTEX(lockMutex);
886
887   if (INTEL_DEBUG & DEBUG_LOCK)
888      _mesa_printf("%s - unlocked\n", __progname);
889
890   /**
891    * Nothing should be left in batch outside of LOCK/UNLOCK which references
892    * cliprects.
893    */
894   if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
895      intel_batchbuffer_flush(intel->batch);
896}
897
898