intel_context.c revision 7d99ddcb2bb09f1f54d91e6e20e42d217a5bccdf 
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/matrix.h"
32#include "main/simple_list.h"
33#include "main/extensions.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_pixel.h"
57#include "intel_regions.h"
58#include "intel_buffer_objects.h"
59#include "intel_fbo.h"
60#include "intel_decode.h"
61#include "intel_bufmgr.h"
62
63#include "drirenderbuffer.h"
64#include "vblank.h"
65#include "utils.h"
66#include "xmlpool.h"            /* for symbolic values of enum-type options */
67#ifndef INTEL_DEBUG
68int INTEL_DEBUG = (0);
69#endif
70
71#define need_GL_NV_point_sprite
72#define need_GL_ARB_multisample
73#define need_GL_ARB_point_parameters
74#define need_GL_ARB_texture_compression
75#define need_GL_ARB_vertex_buffer_object
76#define need_GL_ARB_vertex_program
77#define need_GL_ARB_window_pos
78#define need_GL_ARB_occlusion_query
79#define need_GL_EXT_blend_color
80#define need_GL_EXT_blend_equation_separate
81#define need_GL_EXT_blend_func_separate
82#define need_GL_EXT_blend_minmax
83#define need_GL_EXT_cull_vertex
84#define need_GL_EXT_fog_coord
85#define need_GL_EXT_framebuffer_object
86#define need_GL_EXT_multi_draw_arrays
87#define need_GL_EXT_secondary_color
88#define need_GL_NV_vertex_program
89#define need_GL_ATI_separate_stencil
90#define need_GL_EXT_point_parameters
91#define need_GL_VERSION_2_0
92#define need_GL_VERSION_2_1
93#define need_GL_ARB_shader_objects
94#define need_GL_ARB_vertex_shader
95
96#include "extension_helper.h"
97
98#define DRIVER_DATE                     "20080716"
99#define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
100
101static const GLubyte *
102intelGetString(GLcontext * ctx, GLenum name)
103{
104   const struct intel_context *const intel = intel_context(ctx);
105   const char *chipset;
106   static char buffer[128];
107
108   switch (name) {
109   case GL_VENDOR:
110      return (GLubyte *) "Tungsten Graphics, Inc";
111      break;
112
113   case GL_RENDERER:
114      switch (intel->intelScreen->deviceID) {
115      case PCI_CHIP_845_G:
116         chipset = "Intel(R) 845G";
117         break;
118      case PCI_CHIP_I830_M:
119         chipset = "Intel(R) 830M";
120         break;
121      case PCI_CHIP_I855_GM:
122         chipset = "Intel(R) 852GM/855GM";
123         break;
124      case PCI_CHIP_I865_G:
125         chipset = "Intel(R) 865G";
126         break;
127      case PCI_CHIP_I915_G:
128         chipset = "Intel(R) 915G";
129         break;
130      case PCI_CHIP_E7221_G:
131	 chipset = "Intel (R) E7221G (i915)";
132	 break;
133      case PCI_CHIP_I915_GM:
134         chipset = "Intel(R) 915GM";
135         break;
136      case PCI_CHIP_I945_G:
137         chipset = "Intel(R) 945G";
138         break;
139      case PCI_CHIP_I945_GM:
140         chipset = "Intel(R) 945GM";
141         break;
142      case PCI_CHIP_I945_GME:
143         chipset = "Intel(R) 945GME";
144         break;
145      case PCI_CHIP_G33_G:
146	 chipset = "Intel(R) G33";
147	 break;
148      case PCI_CHIP_Q35_G:
149	 chipset = "Intel(R) Q35";
150	 break;
151      case PCI_CHIP_Q33_G:
152	 chipset = "Intel(R) Q33";
153	 break;
154      case PCI_CHIP_I965_Q:
155	 chipset = "Intel(R) 965Q";
156	 break;
157      case PCI_CHIP_I965_G:
158      case PCI_CHIP_I965_G_1:
159	 chipset = "Intel(R) 965G";
160	 break;
161      case PCI_CHIP_I946_GZ:
162	 chipset = "Intel(R) 946GZ";
163	 break;
164      case PCI_CHIP_I965_GM:
165	 chipset = "Intel(R) 965GM";
166	 break;
167      case PCI_CHIP_I965_GME:
168	 chipset = "Intel(R) 965GME/GLE";
169	 break;
170      case PCI_CHIP_GM45_GM:
171	 chipset = "Mobile Intel® GM45 Express Chipset";
172	 break;
173      case PCI_CHIP_IGD_E_G:
174	 chipset = "Intel(R) Integrated Graphics Device";
175	 break;
176      case PCI_CHIP_G45_G:
177         chipset = "Intel(R) G45/G43";
178         break;
179      case PCI_CHIP_Q45_G:
180         chipset = "Intel(R) Q45/Q43";
181         break;
182      case PCI_CHIP_G41_G:
183         chipset = "Intel(R) G41";
184         break;
185      default:
186         chipset = "Unknown Intel Chipset";
187         break;
188      }
189
190      (void) driGetRendererString(buffer, chipset,
191				  (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
192				  0);
193      return (GLubyte *) buffer;
194
195   default:
196      return NULL;
197   }
198}
199
200void
201intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
202{
203   struct intel_framebuffer *intel_fb = drawable->driverPrivate;
204   struct intel_renderbuffer *rb;
205   struct intel_region *region, *depth_region;
206   struct intel_context *intel = context->driverPrivate;
207   __DRIbuffer *buffers;
208   __DRIscreen *screen;
209   int i, count;
210   unsigned int attachments[10];
211   uint32_t name;
212   const char *region_name;
213
214   if (INTEL_DEBUG & DEBUG_DRI)
215      fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
216
217   screen = intel->intelScreen->driScrnPriv;
218
219   i = 0;
220   if (intel_fb->color_rb[0])
221      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
222   if (intel_fb->color_rb[1])
223      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
224   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
225      attachments[i++] = __DRI_BUFFER_DEPTH;
226   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
227      attachments[i++] = __DRI_BUFFER_STENCIL;
228
229   buffers = (*screen->dri2.loader->getBuffers)(drawable,
230						&drawable->w,
231						&drawable->h,
232						attachments, i,
233						&count,
234						drawable->loaderPrivate);
235
236   if (buffers == NULL)
237      return;
238
239   drawable->x = 0;
240   drawable->y = 0;
241   drawable->backX = 0;
242   drawable->backY = 0;
243   drawable->numClipRects = 1;
244   drawable->pClipRects[0].x1 = 0;
245   drawable->pClipRects[0].y1 = 0;
246   drawable->pClipRects[0].x2 = drawable->w;
247   drawable->pClipRects[0].y2 = drawable->h;
248   drawable->numBackClipRects = 1;
249   drawable->pBackClipRects[0].x1 = 0;
250   drawable->pBackClipRects[0].y1 = 0;
251   drawable->pBackClipRects[0].x2 = drawable->w;
252   drawable->pBackClipRects[0].y2 = drawable->h;
253
254   depth_region = NULL;
255   for (i = 0; i < count; i++) {
256       switch (buffers[i].attachment) {
257       case __DRI_BUFFER_FRONT_LEFT:
258	   rb = intel_fb->color_rb[0];
259	   region_name = "dri2 front buffer";
260	   break;
261
262       case __DRI_BUFFER_BACK_LEFT:
263	   rb = intel_fb->color_rb[1];
264	   region_name = "dri2 back buffer";
265	   break;
266
267       case __DRI_BUFFER_DEPTH:
268	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
269	   region_name = "dri2 depth buffer";
270	   break;
271
272       case __DRI_BUFFER_STENCIL:
273	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
274	   region_name = "dri2 stencil buffer";
275	   break;
276
277       case __DRI_BUFFER_ACCUM:
278       default:
279	   fprintf(stderr,
280		   "unhandled buffer attach event, attacment type %d\n",
281		   buffers[i].attachment);
282	   return;
283       }
284
285       if (rb->region) {
286	  dri_bo_flink(rb->region->buffer, &name);
287	  if (name == buffers[i].name)
288	     continue;
289       }
290
291       if (INTEL_DEBUG & DEBUG_DRI)
292	  fprintf(stderr,
293		  "attaching buffer %d, at %d, cpp %d, pitch %d\n",
294		  buffers[i].name, buffers[i].attachment,
295		  buffers[i].cpp, buffers[i].pitch);
296
297       if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
298	  if (INTEL_DEBUG & DEBUG_DRI)
299	     fprintf(stderr, "(reusing depth buffer as stencil)\n");
300	  intel_region_reference(&region, depth_region);
301       }
302       else
303          region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
304						 drawable->w,
305						 drawable->h,
306						 buffers[i].pitch / buffers[i].cpp,
307						 buffers[i].name,
308						 region_name);
309
310       if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
311	  depth_region = region;
312
313       intel_renderbuffer_set_region(rb, region);
314       intel_region_release(&region);
315   }
316
317   driUpdateFramebufferSize(&intel->ctx, drawable);
318}
319
320static void
321intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
322{
323    struct intel_context *intel = intel_context(ctx);
324    __DRIcontext *driContext = intel->driContext;
325
326    if (!driContext->driScreenPriv->dri2.enabled)
327	return;
328
329    intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
330    if (driContext->driDrawablePriv != driContext->driReadablePriv)
331	intel_update_renderbuffers(driContext, driContext->driReadablePriv);
332
333    ctx->Driver.Viewport = NULL;
334    intel->driDrawable = driContext->driDrawablePriv;
335    intelWindowMoved(intel);
336    intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
337    ctx->Driver.Viewport = intel_viewport;
338}
339
340/**
341 * Extension strings exported by the intel driver.
342 *
343 * Extensions supported by all chips supported by i830_dri, i915_dri, or
344 * i965_dri.
345 */
346static const struct dri_extension card_extensions[] = {
347   {"GL_ARB_multisample", GL_ARB_multisample_functions},
348   {"GL_ARB_multitexture", NULL},
349   {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
350   {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
351   {"GL_ARB_texture_border_clamp", NULL},
352   {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
353   {"GL_ARB_texture_cube_map", NULL},
354   {"GL_ARB_texture_env_add", NULL},
355   {"GL_ARB_texture_env_combine", NULL},
356   {"GL_ARB_texture_env_crossbar", NULL},
357   {"GL_ARB_texture_env_dot3", NULL},
358   {"GL_ARB_texture_mirrored_repeat", NULL},
359   {"GL_ARB_texture_non_power_of_two",   NULL },
360   {"GL_ARB_texture_rectangle", NULL},
361   {"GL_NV_texture_rectangle", NULL},
362   {"GL_EXT_texture_rectangle", NULL},
363   {"GL_ARB_point_parameters", NULL},
364   {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
365   {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
366   {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
367   {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
368   {"GL_EXT_blend_equation_separate",
369    GL_EXT_blend_equation_separate_functions},
370   {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
371   {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
372   {"GL_EXT_blend_logic_op", NULL},
373   {"GL_EXT_blend_subtract", NULL},
374   {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
375   {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
376   {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
377   {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
378#if 1                           /* XXX FBO temporary? */
379   {"GL_EXT_packed_depth_stencil", NULL},
380#endif
381   {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
382   {"GL_EXT_stencil_wrap", NULL},
383   {"GL_EXT_texture_edge_clamp", NULL},
384   {"GL_EXT_texture_env_combine", NULL},
385   {"GL_EXT_texture_env_dot3", NULL},
386   {"GL_EXT_texture_filter_anisotropic", NULL},
387   {"GL_EXT_texture_lod_bias", NULL},
388   {"GL_3DFX_texture_compression_FXT1", NULL},
389   {"GL_APPLE_client_storage", NULL},
390   {"GL_MESA_pack_invert", NULL},
391   {"GL_MESA_ycbcr_texture", NULL},
392   {"GL_NV_blend_square", NULL},
393   {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
394   {"GL_NV_vertex_program1_1", NULL},
395   { "GL_SGIS_generate_mipmap", NULL },
396   {NULL, NULL}
397};
398
399static const struct dri_extension brw_extensions[] = {
400   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
401   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
402   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
403   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
404   { "GL_ARB_point_sprite", 		  NULL},
405   { "GL_ARB_fragment_shader",            NULL },
406   { "GL_ARB_draw_buffers",               NULL },
407   { "GL_ARB_depth_texture",              NULL },
408   { "GL_ARB_fragment_program",           NULL },
409   { "GL_ARB_shadow",                     NULL },
410   { "GL_EXT_shadow_funcs",               NULL },
411   { "GL_ARB_fragment_program_shadow",    NULL },
412   /* ARB extn won't work if not enabled */
413   { "GL_SGIX_depth_texture",             NULL },
414   { "GL_EXT_texture_sRGB",		  NULL},
415   { NULL,                                NULL }
416};
417
418#ifdef I915_MMIO_READ
419static const struct dri_extension arb_oc_extensions[] = {
420   {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
421   {NULL, NULL}
422};
423#endif
424
425static const struct dri_extension ttm_extensions[] = {
426   {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
427   {"GL_ARB_pixel_buffer_object", NULL},
428   {NULL, NULL}
429};
430
431/**
432 * Initializes potential list of extensions if ctx == NULL, or actually enables
433 * extensions for a context.
434 */
435void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
436{
437   struct intel_context *intel = ctx?intel_context(ctx):NULL;
438
439   /* Disable imaging extension until convolution is working in teximage paths.
440    */
441   enable_imaging = GL_FALSE;
442
443   driInitExtensions(ctx, card_extensions, enable_imaging);
444
445   if (intel == NULL || intel->ttm)
446      driInitExtensions(ctx, ttm_extensions, GL_FALSE);
447
448#ifdef I915_MMIO_READ
449   if (intel == NULL ||
450       (IS_965(intel->intelScreen->deviceID) &&
451	intel->intelScreen->drmMinor >= 8))
452      driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
453#endif
454
455   if (intel == NULL || IS_965(intel->intelScreen->deviceID))
456      driInitExtensions(ctx, brw_extensions, GL_FALSE);
457}
458
459static const struct dri_debug_control debug_control[] = {
460   { "tex",   DEBUG_TEXTURE},
461   { "state", DEBUG_STATE},
462   { "ioctl", DEBUG_IOCTL},
463   { "blit",  DEBUG_BLIT},
464   { "mip",   DEBUG_MIPTREE},
465   { "fall",  DEBUG_FALLBACKS},
466   { "verb",  DEBUG_VERBOSE},
467   { "bat",   DEBUG_BATCH},
468   { "pix",   DEBUG_PIXEL},
469   { "buf",   DEBUG_BUFMGR},
470   { "reg",   DEBUG_REGION},
471   { "fbo",   DEBUG_FBO},
472   { "lock",  DEBUG_LOCK},
473   { "sync",  DEBUG_SYNC},
474   { "prim",  DEBUG_PRIMS },
475   { "vert",  DEBUG_VERTS },
476   { "dri",   DEBUG_DRI },
477   { "dma",   DEBUG_DMA },
478   { "san",   DEBUG_SANITY },
479   { "sleep", DEBUG_SLEEP },
480   { "stats", DEBUG_STATS },
481   { "tile",  DEBUG_TILE },
482   { "sing",  DEBUG_SINGLE_THREAD },
483   { "thre",  DEBUG_SINGLE_THREAD },
484   { "wm",    DEBUG_WM },
485   { "urb",   DEBUG_URB },
486   { "vs",    DEBUG_VS },
487   { NULL,    0 }
488};
489
490
491static void
492intelInvalidateState(GLcontext * ctx, GLuint new_state)
493{
494    struct intel_context *intel = intel_context(ctx);
495
496   _swrast_InvalidateState(ctx, new_state);
497   _swsetup_InvalidateState(ctx, new_state);
498   _vbo_InvalidateState(ctx, new_state);
499   _tnl_InvalidateState(ctx, new_state);
500   _tnl_invalidate_vertex_state(ctx, new_state);
501
502   intel->NewGLState |= new_state;
503
504   if (intel->vtbl.invalidate_state)
505      intel->vtbl.invalidate_state( intel, new_state );
506}
507
508
509void
510intelFlush(GLcontext * ctx)
511{
512   struct intel_context *intel = intel_context(ctx);
513
514   if (intel->Fallback)
515      _swrast_flush(ctx);
516
517   if (!IS_965(intel->intelScreen->deviceID))
518      INTEL_FIREVERTICES(intel);
519
520   /* Emit a flush so that any frontbuffer rendering that might have occurred
521    * lands onscreen in a timely manner, even if the X Server doesn't trigger
522    * a flush for us.
523    */
524   intel_batchbuffer_emit_mi_flush(intel->batch);
525
526   if (intel->batch->map != intel->batch->ptr)
527      intel_batchbuffer_flush(intel->batch);
528}
529
530void
531intelFinish(GLcontext * ctx)
532{
533   struct gl_framebuffer *fb = ctx->DrawBuffer;
534   int i;
535
536   intelFlush(ctx);
537
538   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
539       struct intel_renderbuffer *irb;
540
541       irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
542
543       if (irb->region)
544	  dri_bo_wait_rendering(irb->region->buffer);
545   }
546   if (fb->_DepthBuffer) {
547      /* XXX: Wait on buffer idle */
548   }
549}
550
551#ifdef I915_MMIO_READ
552static void
553intelBeginQuery(GLcontext *ctx, struct gl_query_object *q)
554{
555	struct intel_context *intel = intel_context( ctx );
556	struct drm_i915_mmio io = {
557		.read_write = I915_MMIO_READ,
558		.reg = MMIO_REGS_PS_DEPTH_COUNT,
559		.data = &q->Result
560	};
561	intel->stats_wm++;
562	intelFinish(&intel->ctx);
563	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
564}
565
566static void
567intelEndQuery(GLcontext *ctx, struct gl_query_object *q)
568{
569	struct intel_context *intel = intel_context( ctx );
570	GLuint64EXT tmp;
571	struct drm_i915_mmio io = {
572		.read_write = I915_MMIO_READ,
573		.reg = MMIO_REGS_PS_DEPTH_COUNT,
574		.data = &tmp
575	};
576	intelFinish(&intel->ctx);
577	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
578	q->Result = tmp - q->Result;
579	q->Ready = GL_TRUE;
580	intel->stats_wm--;
581}
582#endif
583
584void
585intelInitDriverFunctions(struct dd_function_table *functions)
586{
587   _mesa_init_driver_functions(functions);
588
589   functions->Flush = intelFlush;
590   functions->Finish = intelFinish;
591   functions->GetString = intelGetString;
592   functions->UpdateState = intelInvalidateState;
593   functions->Viewport = intel_viewport;
594
595   functions->CopyColorTable = _swrast_CopyColorTable;
596   functions->CopyColorSubTable = _swrast_CopyColorSubTable;
597   functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
598   functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
599
600#ifdef I915_MMIO_READ
601   functions->BeginQuery = intelBeginQuery;
602   functions->EndQuery = intelEndQuery;
603#endif
604
605   intelInitTextureFuncs(functions);
606   intelInitStateFuncs(functions);
607   intelInitBufferFuncs(functions);
608   intelInitPixelFuncs(functions);
609}
610
611
612GLboolean
613intelInitContext(struct intel_context *intel,
614                 const __GLcontextModes * mesaVis,
615                 __DRIcontextPrivate * driContextPriv,
616                 void *sharedContextPrivate,
617                 struct dd_function_table *functions)
618{
619   GLcontext *ctx = &intel->ctx;
620   GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
621   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
622   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
623   int fthrottle_mode;
624
625   if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
626                                 functions, (void *) intel)) {
627      _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
628      return GL_FALSE;
629   }
630
631   driContextPriv->driverPrivate = intel;
632   intel->intelScreen = intelScreen;
633   intel->driScreen = sPriv;
634   intel->sarea = intelScreen->sarea;
635   intel->driContext = driContextPriv;
636
637   /* Dri stuff */
638   intel->hHWContext = driContextPriv->hHWContext;
639   intel->driFd = sPriv->fd;
640   intel->driHwLock = sPriv->lock;
641
642   intel->width = intelScreen->width;
643   intel->height = intelScreen->height;
644
645   driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
646                       intel->driScreen->myNum,
647		       IS_965(intelScreen->deviceID) ? "i965" : "i915");
648   if (intelScreen->deviceID == PCI_CHIP_I865_G)
649      intel->maxBatchSize = 4096;
650   else
651      intel->maxBatchSize = BATCH_SZ;
652
653   intel->bufmgr = intelScreen->bufmgr;
654   intel->ttm = intelScreen->ttm;
655   if (intel->ttm) {
656      int bo_reuse_mode;
657
658      bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
659      switch (bo_reuse_mode) {
660      case DRI_CONF_BO_REUSE_DISABLED:
661	 break;
662      case DRI_CONF_BO_REUSE_ALL:
663	 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
664	 break;
665      }
666   }
667
668   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
669
670   /* This doesn't yet catch all non-conformant rendering, but it's a
671    * start.
672    */
673   if (getenv("INTEL_STRICT_CONFORMANCE")) {
674      intel->strict_conformance = 1;
675   }
676
677   if (intel->strict_conformance) {
678      ctx->Const.MinLineWidth = 1.0;
679      ctx->Const.MinLineWidthAA = 1.0;
680      ctx->Const.MaxLineWidth = 1.0;
681      ctx->Const.MaxLineWidthAA = 1.0;
682      ctx->Const.LineWidthGranularity = 1.0;
683   }
684   else {
685      ctx->Const.MinLineWidth = 1.0;
686      ctx->Const.MinLineWidthAA = 1.0;
687      ctx->Const.MaxLineWidth = 5.0;
688      ctx->Const.MaxLineWidthAA = 5.0;
689      ctx->Const.LineWidthGranularity = 0.5;
690   }
691
692   ctx->Const.MinPointSize = 1.0;
693   ctx->Const.MinPointSizeAA = 1.0;
694   ctx->Const.MaxPointSize = 255.0;
695   ctx->Const.MaxPointSizeAA = 3.0;
696   ctx->Const.PointSizeGranularity = 1.0;
697
698   /* reinitialize the context point state.
699    * It depend on constants in __GLcontextRec::Const
700    */
701   _mesa_init_point(ctx);
702
703   ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
704
705   /* Initialize the software rasterizer and helper modules. */
706   _swrast_CreateContext(ctx);
707   _vbo_CreateContext(ctx);
708   _tnl_CreateContext(ctx);
709   _swsetup_CreateContext(ctx);
710
711   /* Configure swrast to match hardware characteristics: */
712   _swrast_allow_pixel_fog(ctx, GL_FALSE);
713   _swrast_allow_vertex_fog(ctx, GL_TRUE);
714
715   intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
716   intel->hw_stipple = 1;
717
718   /* XXX FBO: this doesn't seem to be used anywhere */
719   switch (mesaVis->depthBits) {
720   case 0:                     /* what to do in this case? */
721   case 16:
722      intel->polygon_offset_scale = 1.0;
723      break;
724   case 24:
725      intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
726      break;
727   default:
728      assert(0);
729      break;
730   }
731
732   if (IS_965(intelScreen->deviceID))
733      intel->polygon_offset_scale /= 0xffff;
734
735   intel->RenderIndex = ~0;
736
737   fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
738   intel->irqsEmitted = 0;
739
740   intel->do_irqs = (intel->intelScreen->irq_active &&
741                     fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
742
743   intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
744
745   _math_matrix_ctr(&intel->ViewportMatrix);
746
747   if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
748      _mesa_printf("IRQs not active.  Exiting\n");
749      exit(1);
750   }
751
752   intelInitExtensions(ctx, GL_FALSE);
753
754   INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
755   if (INTEL_DEBUG & DEBUG_BUFMGR)
756      dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
757
758   if (!sPriv->dri2.enabled)
759      intel_recreate_static_regions(intel);
760
761   intel->batch = intel_batchbuffer_alloc(intel);
762
763   intel_bufferobj_init(intel);
764   intel_fbo_init(intel);
765
766   if (intel->ctx.Mesa_DXTn) {
767      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
768      _mesa_enable_extension(ctx, "GL_S3_s3tc");
769   }
770   else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
771      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
772   }
773
774   intel->prim.primitive = ~0;
775
776   /* Force all software fallbacks */
777   if (driQueryOptionb(&intel->optionCache, "no_rast")) {
778      fprintf(stderr, "disabling 3D rasterization\n");
779      intel->no_rast = 1;
780   }
781
782   /* Disable all hardware rendering (skip emitting batches and fences/waits
783    * to the kernel)
784    */
785   intel->no_hw = getenv("INTEL_NO_HW") != NULL;
786
787   return GL_TRUE;
788}
789
790void
791intelDestroyContext(__DRIcontextPrivate * driContextPriv)
792{
793   struct intel_context *intel =
794      (struct intel_context *) driContextPriv->driverPrivate;
795
796   assert(intel);               /* should never be null */
797   if (intel) {
798      GLboolean release_texture_heaps;
799
800      INTEL_FIREVERTICES(intel);
801
802      intel->vtbl.destroy(intel);
803
804      release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
805      _swsetup_DestroyContext(&intel->ctx);
806      _tnl_DestroyContext(&intel->ctx);
807      _vbo_DestroyContext(&intel->ctx);
808
809      _swrast_DestroyContext(&intel->ctx);
810      intel->Fallback = 0;      /* don't call _swrast_Flush later */
811
812      intel_batchbuffer_free(intel->batch);
813      intel->batch = NULL;
814
815      free(intel->prim.vb);
816      intel->prim.vb = NULL;
817      dri_bo_unreference(intel->prim.vb_bo);
818      intel->prim.vb_bo = NULL;
819
820      if (release_texture_heaps) {
821         /* This share group is about to go away, free our private
822          * texture object data.
823          */
824         if (INTEL_DEBUG & DEBUG_TEXTURE)
825            fprintf(stderr, "do something to free texture heaps\n");
826      }
827
828      intel_region_release(&intel->front_region);
829      intel_region_release(&intel->back_region);
830      intel_region_release(&intel->third_region);
831      intel_region_release(&intel->depth_region);
832
833      driDestroyOptionCache(&intel->optionCache);
834
835      /* free the Mesa context */
836      _mesa_free_context_data(&intel->ctx);
837   }
838}
839
840GLboolean
841intelUnbindContext(__DRIcontextPrivate * driContextPriv)
842{
843   return GL_TRUE;
844}
845
846GLboolean
847intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
848                 __DRIdrawablePrivate * driDrawPriv,
849                 __DRIdrawablePrivate * driReadPriv)
850{
851   __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
852
853   if (driContextPriv) {
854      struct intel_context *intel =
855         (struct intel_context *) driContextPriv->driverPrivate;
856      struct intel_framebuffer *intel_fb =
857	 (struct intel_framebuffer *) driDrawPriv->driverPrivate;
858      GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
859
860      if (driContextPriv->driScreenPriv->dri2.enabled) {
861          intel_update_renderbuffers(driContextPriv, driDrawPriv);
862          if (driDrawPriv != driReadPriv)
863              intel_update_renderbuffers(driContextPriv, driReadPriv);
864      } else {
865          /* XXX FBO temporary fix-ups! */
866          /* if the renderbuffers don't have regions, init them from the context */
867         struct intel_renderbuffer *irbDepth
868            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
869         struct intel_renderbuffer *irbStencil
870            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
871
872         if (intel_fb->color_rb[0]) {
873	    intel_renderbuffer_set_region(intel_fb->color_rb[0],
874					  intel->front_region);
875         }
876         if (intel_fb->color_rb[1]) {
877	    intel_renderbuffer_set_region(intel_fb->color_rb[1],
878					  intel->back_region);
879         }
880#if 0
881         if (intel_fb->color_rb[2]) {
882	    intel_renderbuffer_set_region(intel_fb->color_rb[2],
883					  intel->third_region);
884         }
885#endif
886         if (irbDepth) {
887	    intel_renderbuffer_set_region(irbDepth, intel->depth_region);
888         }
889         if (irbStencil) {
890	    intel_renderbuffer_set_region(irbStencil, intel->depth_region);
891         }
892      }
893
894      /* set GLframebuffer size to match window, if needed */
895      driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
896
897      if (driReadPriv != driDrawPriv) {
898	 driUpdateFramebufferSize(&intel->ctx, driReadPriv);
899      }
900
901      _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
902
903      /* The drawbuffer won't always be updated by _mesa_make_current:
904       */
905      if (intel->ctx.DrawBuffer == &intel_fb->Base) {
906
907	 if (intel->driReadDrawable != driReadPriv)
908	    intel->driReadDrawable = driReadPriv;
909
910	 if (intel->driDrawable != driDrawPriv) {
911	    if (driDrawPriv->swap_interval == (unsigned)-1) {
912	       int i;
913
914	       driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
915		  ? driGetDefaultVBlankFlags(&intel->optionCache)
916		 : VBLANK_FLAG_NO_IRQ;
917
918	       (*psp->systemTime->getUST) (&intel_fb->swap_ust);
919	       driDrawableInitVBlank(driDrawPriv);
920	       intel_fb->vbl_waited = driDrawPriv->vblSeq;
921
922	       for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
923		  if (intel_fb->color_rb[i])
924		     intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
925	       }
926	    }
927	    intel->driDrawable = driDrawPriv;
928	    intelWindowMoved(intel);
929	 }
930
931	 intel_draw_buffer(&intel->ctx, &intel_fb->Base);
932      }
933   }
934   else {
935      _mesa_make_current(NULL, NULL, NULL);
936   }
937
938   return GL_TRUE;
939}
940
941static void
942intelContendedLock(struct intel_context *intel, GLuint flags)
943{
944   __DRIdrawablePrivate *dPriv = intel->driDrawable;
945   __DRIscreenPrivate *sPriv = intel->driScreen;
946   volatile struct drm_i915_sarea *sarea = intel->sarea;
947   int me = intel->hHWContext;
948
949   drmGetLock(intel->driFd, intel->hHWContext, flags);
950   intel->locked = 1;
951
952   if (INTEL_DEBUG & DEBUG_LOCK)
953      _mesa_printf("%s - got contended lock\n", __progname);
954
955   /* If the window moved, may need to set a new cliprect now.
956    *
957    * NOTE: This releases and regains the hw lock, so all state
958    * checking must be done *after* this call:
959    */
960   if (dPriv)
961       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
962
963   if (sarea && sarea->ctxOwner != me) {
964      if (INTEL_DEBUG & DEBUG_BUFMGR) {
965	 fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
966		 sarea->ctxOwner, me);
967      }
968      sarea->ctxOwner = me;
969   }
970
971   /* If the last consumer of the texture memory wasn't us, notify the fake
972    * bufmgr and record the new owner.  We should have the memory shared
973    * between contexts of a single fake bufmgr, but this will at least make
974    * things correct for now.
975    */
976   if (!intel->ttm && sarea->texAge != intel->hHWContext) {
977      sarea->texAge = intel->hHWContext;
978      intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
979      if (INTEL_DEBUG & DEBUG_BATCH)
980	 intel_decode_context_reset();
981      if (INTEL_DEBUG & DEBUG_BUFMGR)
982	 fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
983		 sarea->ctxOwner, intel->hHWContext);
984   }
985
986   if (sarea->width != intel->width || sarea->height != intel->height) {
987       int numClipRects = intel->numClipRects;
988
989       /*
990	* FIXME: Really only need to do this when drawing to a
991	* common back- or front buffer.
992	*/
993
994       /*
995	* This will essentially drop the outstanding batchbuffer on
996	* the floor.
997	*/
998       intel->numClipRects = 0;
999
1000       if (intel->Fallback)
1001	   _swrast_flush(&intel->ctx);
1002
1003       if (!IS_965(intel->intelScreen->deviceID))
1004	   INTEL_FIREVERTICES(intel);
1005
1006       if (intel->batch->map != intel->batch->ptr)
1007	   intel_batchbuffer_flush(intel->batch);
1008
1009       intel->numClipRects = numClipRects;
1010
1011       /* force window update */
1012       intel->lastStamp = 0;
1013
1014       intel->width = sarea->width;
1015       intel->height = sarea->height;
1016   }
1017
1018   /* Drawable changed?
1019    */
1020   if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1021       intelWindowMoved(intel);
1022       intel->lastStamp = dPriv->lastStamp;
1023   }
1024}
1025
1026
1027_glthread_DECLARE_STATIC_MUTEX(lockMutex);
1028
1029/* Lock the hardware and validate our state.
1030 */
1031void LOCK_HARDWARE( struct intel_context *intel )
1032{
1033    __DRIdrawable *dPriv = intel->driDrawable;
1034    __DRIscreen *sPriv = intel->driScreen;
1035    char __ret = 0;
1036    struct intel_framebuffer *intel_fb = NULL;
1037    struct intel_renderbuffer *intel_rb = NULL;
1038
1039    _glthread_LOCK_MUTEX(lockMutex);
1040    assert(!intel->locked);
1041    intel->locked = 1;
1042
1043    if (intel->driDrawable) {
1044       intel_fb = intel->driDrawable->driverPrivate;
1045
1046       if (intel_fb)
1047	  intel_rb =
1048	     intel_get_renderbuffer(&intel_fb->Base,
1049				    intel_fb->Base._ColorDrawBufferIndexes[0]);
1050    }
1051
1052    if (intel_rb && dPriv->vblFlags &&
1053	!(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1054	(intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1055	drmVBlank vbl;
1056
1057	vbl.request.type = DRM_VBLANK_ABSOLUTE;
1058
1059	if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1060	    vbl.request.type |= DRM_VBLANK_SECONDARY;
1061	}
1062
1063	vbl.request.sequence = intel_rb->vbl_pending;
1064	drmWaitVBlank(intel->driFd, &vbl);
1065	intel_fb->vbl_waited = vbl.reply.sequence;
1066    }
1067
1068    if (!sPriv->dri2.enabled) {
1069	DRM_CAS(intel->driHwLock, intel->hHWContext,
1070		(DRM_LOCK_HELD|intel->hHWContext), __ret);
1071
1072	if (__ret)
1073	    intelContendedLock( intel, 0 );
1074    }
1075
1076
1077    if (INTEL_DEBUG & DEBUG_LOCK)
1078      _mesa_printf("%s - locked\n", __progname);
1079}
1080
1081
1082/* Unlock the hardware using the global current context
1083 */
1084void UNLOCK_HARDWARE( struct intel_context *intel )
1085{
1086    __DRIscreen *sPriv = intel->driScreen;
1087
1088   intel->vtbl.note_unlock( intel );
1089   intel->locked = 0;
1090
1091   if (!sPriv->dri2.enabled)
1092      DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1093
1094   _glthread_UNLOCK_MUTEX(lockMutex);
1095
1096   if (INTEL_DEBUG & DEBUG_LOCK)
1097      _mesa_printf("%s - unlocked\n", __progname);
1098
1099   /**
1100    * Nothing should be left in batch outside of LOCK/UNLOCK which references
1101    * cliprects.
1102    */
1103   if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1104      intel_batchbuffer_flush(intel->batch);
1105}
1106
1107