intel_context.c revision e32721c46a713f55a8fd70e61f9cb066eeb69211 
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 "glheader.h"
30#include "context.h"
31#include "matrix.h"
32#include "simple_list.h"
33#include "extensions.h"
34#include "framebuffer.h"
35#include "imports.h"
36#include "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_ioctl.h"
55#include "intel_batchbuffer.h"
56#include "intel_blit.h"
57#include "intel_pixel.h"
58#include "intel_regions.h"
59#include "intel_buffer_objects.h"
60#include "intel_fbo.h"
61#include "intel_decode.h"
62#include "intel_bufmgr.h"
63
64#include "drirenderbuffer.h"
65#include "vblank.h"
66#include "utils.h"
67#include "xmlpool.h"            /* for symbolic values of enum-type options */
68#ifndef INTEL_DEBUG
69int INTEL_DEBUG = (0);
70#endif
71
72#define need_GL_NV_point_sprite
73#define need_GL_ARB_multisample
74#define need_GL_ARB_point_parameters
75#define need_GL_ARB_texture_compression
76#define need_GL_ARB_vertex_buffer_object
77#define need_GL_ARB_vertex_program
78#define need_GL_ARB_window_pos
79#define need_GL_ARB_occlusion_query
80#define need_GL_EXT_blend_color
81#define need_GL_EXT_blend_equation_separate
82#define need_GL_EXT_blend_func_separate
83#define need_GL_EXT_blend_minmax
84#define need_GL_EXT_cull_vertex
85#define need_GL_EXT_fog_coord
86#define need_GL_EXT_framebuffer_object
87#define need_GL_EXT_multi_draw_arrays
88#define need_GL_EXT_secondary_color
89#define need_GL_NV_vertex_program
90#define need_GL_ATI_separate_stencil
91#define need_GL_EXT_point_parameters
92#define need_GL_VERSION_2_0
93#define need_GL_VERSION_2_1
94#define need_GL_ARB_shader_objects
95#define need_GL_ARB_vertex_shader
96
97#include "extension_helper.h"
98
99#define DRIVER_DATE                     "20080716"
100#define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
101
102static const GLubyte *
103intelGetString(GLcontext * ctx, GLenum name)
104{
105   const struct intel_context *const intel = intel_context(ctx);
106   const char *chipset;
107   static char buffer[128];
108
109   switch (name) {
110   case GL_VENDOR:
111      return (GLubyte *) "Tungsten Graphics, Inc";
112      break;
113
114   case GL_RENDERER:
115      switch (intel->intelScreen->deviceID) {
116      case PCI_CHIP_845_G:
117         chipset = "Intel(R) 845G";
118         break;
119      case PCI_CHIP_I830_M:
120         chipset = "Intel(R) 830M";
121         break;
122      case PCI_CHIP_I855_GM:
123         chipset = "Intel(R) 852GM/855GM";
124         break;
125      case PCI_CHIP_I865_G:
126         chipset = "Intel(R) 865G";
127         break;
128      case PCI_CHIP_I915_G:
129         chipset = "Intel(R) 915G";
130         break;
131      case PCI_CHIP_E7221_G:
132	 chipset = "Intel (R) E7221G (i915)";
133	 break;
134      case PCI_CHIP_I915_GM:
135         chipset = "Intel(R) 915GM";
136         break;
137      case PCI_CHIP_I945_G:
138         chipset = "Intel(R) 945G";
139         break;
140      case PCI_CHIP_I945_GM:
141         chipset = "Intel(R) 945GM";
142         break;
143      case PCI_CHIP_I945_GME:
144         chipset = "Intel(R) 945GME";
145         break;
146      case PCI_CHIP_G33_G:
147	 chipset = "Intel(R) G33";
148	 break;
149      case PCI_CHIP_Q35_G:
150	 chipset = "Intel(R) Q35";
151	 break;
152      case PCI_CHIP_Q33_G:
153	 chipset = "Intel(R) Q33";
154	 break;
155      case PCI_CHIP_I965_Q:
156	 chipset = "Intel(R) 965Q";
157	 break;
158      case PCI_CHIP_I965_G:
159      case PCI_CHIP_I965_G_1:
160	 chipset = "Intel(R) 965G";
161	 break;
162      case PCI_CHIP_I946_GZ:
163	 chipset = "Intel(R) 946GZ";
164	 break;
165      case PCI_CHIP_I965_GM:
166	 chipset = "Intel(R) 965GM";
167	 break;
168      case PCI_CHIP_I965_GME:
169	 chipset = "Intel(R) 965GME/GLE";
170	 break;
171      case PCI_CHIP_GM45_GM:
172	 chipset = "Mobile Intel® GM45 Express Chipset";
173	 break;
174      case PCI_CHIP_IGD_E_G:
175	 chipset = "Intel(R) Integrated Graphics Device";
176	 break;
177      case PCI_CHIP_G45_G:
178         chipset = "Intel(R) G45/G43";
179         break;
180      case PCI_CHIP_Q45_G:
181         chipset = "Intel(R) Q45/Q43";
182         break;
183      default:
184         chipset = "Unknown Intel Chipset";
185         break;
186      }
187
188      (void) driGetRendererString(buffer, chipset,
189				  (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
190				  0);
191      return (GLubyte *) buffer;
192
193   default:
194      return NULL;
195   }
196}
197
198void
199intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
200{
201   struct intel_framebuffer *intel_fb = drawable->driverPrivate;
202   struct intel_renderbuffer *rb;
203   struct intel_region *region, *depth_region;
204   struct intel_context *intel = context->driverPrivate;
205   __DRIbuffer *buffers;
206   __DRIscreen *screen;
207   int i, count;
208   unsigned int attachments[10];
209   uint32_t name;
210   const char *region_name;
211
212   if (INTEL_DEBUG & DEBUG_DRI)
213      fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
214
215   screen = intel->intelScreen->driScrnPriv;
216
217   i = 0;
218   if (intel_fb->color_rb[0])
219      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
220   if (intel_fb->color_rb[1])
221      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
222   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
223      attachments[i++] = __DRI_BUFFER_DEPTH;
224   if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
225      attachments[i++] = __DRI_BUFFER_STENCIL;
226
227   buffers = (*screen->dri2.loader->getBuffers)(drawable,
228						&drawable->w,
229						&drawable->h,
230						attachments, i,
231						&count,
232						drawable->loaderPrivate);
233
234   drawable->x = 0;
235   drawable->y = 0;
236   drawable->backX = 0;
237   drawable->backY = 0;
238   drawable->numClipRects = 1;
239   drawable->pClipRects[0].x1 = 0;
240   drawable->pClipRects[0].y1 = 0;
241   drawable->pClipRects[0].x2 = drawable->w;
242   drawable->pClipRects[0].y2 = drawable->h;
243   drawable->numBackClipRects = 1;
244   drawable->pBackClipRects[0].x1 = 0;
245   drawable->pBackClipRects[0].y1 = 0;
246   drawable->pBackClipRects[0].x2 = drawable->w;
247   drawable->pBackClipRects[0].y2 = drawable->h;
248
249   depth_region = NULL;
250   for (i = 0; i < count; i++) {
251       switch (buffers[i].attachment) {
252       case __DRI_BUFFER_FRONT_LEFT:
253	   rb = intel_fb->color_rb[0];
254	   region_name = "dri2 front buffer";
255	   break;
256
257       case __DRI_BUFFER_BACK_LEFT:
258	   rb = intel_fb->color_rb[1];
259	   region_name = "dri2 back buffer";
260	   break;
261
262       case __DRI_BUFFER_DEPTH:
263	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
264	   region_name = "dri2 depth buffer";
265	   break;
266
267       case __DRI_BUFFER_STENCIL:
268	   rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
269	   region_name = "dri2 stencil buffer";
270	   break;
271
272       case __DRI_BUFFER_ACCUM:
273       default:
274	   fprintf(stderr,
275		   "unhandled buffer attach event, attacment type %d\n",
276		   buffers[i].attachment);
277	   return;
278       }
279
280       if (rb->region) {
281	  intel_bo_flink(rb->region->buffer, &name);
282	  if (name == buffers[i].name)
283	     continue;
284       }
285
286       if (INTEL_DEBUG & DEBUG_DRI)
287	  fprintf(stderr,
288		  "attaching buffer %d, at %d, cpp %d, pitch %d\n",
289		  buffers[i].name, buffers[i].attachment,
290		  buffers[i].cpp, buffers[i].pitch);
291
292       if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
293	  if (INTEL_DEBUG & DEBUG_DRI)
294	     fprintf(stderr, "(reusing depth buffer as stencil)\n");
295	  intel_region_reference(&region, depth_region);
296       }
297       else
298          region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
299						 buffers[i].pitch / buffers[i].cpp,
300						 drawable->h,
301						 buffers[i].name,
302						 region_name);
303
304       if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
305	  depth_region = region;
306
307       intel_renderbuffer_set_region(rb, region);
308       intel_region_release(&region);
309   }
310
311   driUpdateFramebufferSize(&intel->ctx, drawable);
312}
313
314static void
315intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
316{
317    struct intel_context *intel = intel_context(ctx);
318    __DRIcontext *driContext = intel->driContext;
319
320    if (!driContext->driScreenPriv->dri2.enabled)
321	return;
322
323    intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
324    if (driContext->driDrawablePriv != driContext->driReadablePriv)
325	intel_update_renderbuffers(driContext, driContext->driReadablePriv);
326
327    ctx->Driver.Viewport = NULL;
328    intel->driDrawable = driContext->driDrawablePriv;
329    intelWindowMoved(intel);
330    intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
331    ctx->Driver.Viewport = intel_viewport;
332}
333
334/**
335 * Extension strings exported by the intel driver.
336 *
337 * Extensions supported by all chips supported by i830_dri, i915_dri, or
338 * i965_dri.
339 */
340static const struct dri_extension card_extensions[] = {
341   {"GL_ARB_multisample", GL_ARB_multisample_functions},
342   {"GL_ARB_multitexture", NULL},
343   {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
344   {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
345   {"GL_ARB_texture_border_clamp", NULL},
346   {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
347   {"GL_ARB_texture_cube_map", NULL},
348   {"GL_ARB_texture_env_add", NULL},
349   {"GL_ARB_texture_env_combine", NULL},
350   {"GL_ARB_texture_env_crossbar", NULL},
351   {"GL_ARB_texture_env_dot3", NULL},
352   {"GL_ARB_texture_mirrored_repeat", NULL},
353   {"GL_ARB_texture_non_power_of_two",   NULL },
354   {"GL_ARB_texture_rectangle", NULL},
355   {"GL_NV_texture_rectangle", NULL},
356   {"GL_EXT_texture_rectangle", NULL},
357   {"GL_ARB_point_parameters", NULL},
358   {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
359   {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
360   {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
361   {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
362   {"GL_EXT_blend_equation_separate",
363    GL_EXT_blend_equation_separate_functions},
364   {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
365   {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
366   {"GL_EXT_blend_logic_op", NULL},
367   {"GL_EXT_blend_subtract", NULL},
368   {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
369   {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
370   {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
371   {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
372#if 1                           /* XXX FBO temporary? */
373   {"GL_EXT_packed_depth_stencil", NULL},
374#endif
375   {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
376   {"GL_EXT_stencil_wrap", NULL},
377   {"GL_EXT_texture_edge_clamp", NULL},
378   {"GL_EXT_texture_env_combine", NULL},
379   {"GL_EXT_texture_env_dot3", NULL},
380   {"GL_EXT_texture_filter_anisotropic", NULL},
381   {"GL_EXT_texture_lod_bias", NULL},
382   {"GL_3DFX_texture_compression_FXT1", NULL},
383   {"GL_APPLE_client_storage", NULL},
384   {"GL_MESA_pack_invert", NULL},
385   {"GL_MESA_ycbcr_texture", NULL},
386   {"GL_NV_blend_square", NULL},
387   {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
388   {"GL_NV_vertex_program1_1", NULL},
389   { "GL_SGIS_generate_mipmap", NULL },
390   {NULL, NULL}
391};
392
393static const struct dri_extension brw_extensions[] = {
394   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
395   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
396   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
397   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
398   { "GL_ARB_point_sprite", 		  NULL},
399   { "GL_ARB_fragment_shader",            NULL },
400   { "GL_ARB_draw_buffers",               NULL },
401   { "GL_ARB_depth_texture",              NULL },
402   { "GL_ARB_fragment_program",           NULL },
403   { "GL_ARB_shadow",                     NULL },
404   { "GL_EXT_shadow_funcs",               NULL },
405   { "GL_ARB_fragment_program_shadow",    NULL },
406   /* ARB extn won't work if not enabled */
407   { "GL_SGIX_depth_texture",             NULL },
408   { "GL_EXT_texture_sRGB",		  NULL},
409   { NULL,                                NULL }
410};
411
412static const struct dri_extension arb_oc_extensions[] = {
413   {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
414   {NULL, NULL}
415};
416
417static const struct dri_extension ttm_extensions[] = {
418   {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
419   {"GL_ARB_pixel_buffer_object", NULL},
420   {NULL, NULL}
421};
422
423/**
424 * Initializes potential list of extensions if ctx == NULL, or actually enables
425 * extensions for a context.
426 */
427void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
428{
429   struct intel_context *intel = ctx?intel_context(ctx):NULL;
430
431   /* Disable imaging extension until convolution is working in teximage paths.
432    */
433   enable_imaging = GL_FALSE;
434
435   driInitExtensions(ctx, card_extensions, enable_imaging);
436
437   if (intel == NULL || intel->ttm)
438      driInitExtensions(ctx, ttm_extensions, GL_FALSE);
439
440   if (intel == NULL ||
441       (IS_965(intel->intelScreen->deviceID) &&
442	intel->intelScreen->drmMinor >= 8))
443      driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
444
445   if (intel == NULL || IS_965(intel->intelScreen->deviceID))
446      driInitExtensions(ctx, brw_extensions, GL_FALSE);
447}
448
449static const struct dri_debug_control debug_control[] = {
450   { "tex",   DEBUG_TEXTURE},
451   { "state", DEBUG_STATE},
452   { "ioctl", DEBUG_IOCTL},
453   { "blit",  DEBUG_BLIT},
454   { "mip",   DEBUG_MIPTREE},
455   { "fall",  DEBUG_FALLBACKS},
456   { "verb",  DEBUG_VERBOSE},
457   { "bat",   DEBUG_BATCH},
458   { "pix",   DEBUG_PIXEL},
459   { "buf",   DEBUG_BUFMGR},
460   { "reg",   DEBUG_REGION},
461   { "fbo",   DEBUG_FBO},
462   { "lock",  DEBUG_LOCK},
463   { "sync",  DEBUG_SYNC},
464   { "prim",  DEBUG_PRIMS },
465   { "vert",  DEBUG_VERTS },
466   { "dri",   DEBUG_DRI },
467   { "dma",   DEBUG_DMA },
468   { "san",   DEBUG_SANITY },
469   { "sleep", DEBUG_SLEEP },
470   { "stats", DEBUG_STATS },
471   { "tile",  DEBUG_TILE },
472   { "sing",  DEBUG_SINGLE_THREAD },
473   { "thre",  DEBUG_SINGLE_THREAD },
474   { "wm",    DEBUG_WM },
475   { "urb",   DEBUG_URB },
476   { "vs",    DEBUG_VS },
477   { NULL,    0 }
478};
479
480
481static void
482intelInvalidateState(GLcontext * ctx, GLuint new_state)
483{
484    struct intel_context *intel = intel_context(ctx);
485
486   _swrast_InvalidateState(ctx, new_state);
487   _swsetup_InvalidateState(ctx, new_state);
488   _vbo_InvalidateState(ctx, new_state);
489   _tnl_InvalidateState(ctx, new_state);
490   _tnl_invalidate_vertex_state(ctx, new_state);
491
492   intel->NewGLState |= new_state;
493
494   if (intel->vtbl.invalidate_state)
495      intel->vtbl.invalidate_state( intel, new_state );
496}
497
498
499void
500intelFlush(GLcontext * ctx)
501{
502   struct intel_context *intel = intel_context(ctx);
503
504   if (intel->Fallback)
505      _swrast_flush(ctx);
506
507   if (!IS_965(intel->intelScreen->deviceID))
508      INTEL_FIREVERTICES(intel);
509
510   /* Emit a flush so that any frontbuffer rendering that might have occurred
511    * lands onscreen in a timely manner, even if the X Server doesn't trigger
512    * a flush for us.
513    */
514   intel_batchbuffer_emit_mi_flush(intel->batch);
515
516   if (intel->batch->map != intel->batch->ptr)
517      intel_batchbuffer_flush(intel->batch);
518}
519
520void
521intelFinish(GLcontext * ctx)
522{
523   struct gl_framebuffer *fb = ctx->DrawBuffer;
524   int i;
525
526   intelFlush(ctx);
527
528   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
529       struct intel_renderbuffer *irb;
530
531       irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
532
533       if (irb->region)
534	  dri_bo_wait_rendering(irb->region->buffer);
535   }
536   if (fb->_DepthBuffer) {
537      /* XXX: Wait on buffer idle */
538   }
539}
540
541static void
542intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
543{
544	struct intel_context *intel = intel_context( ctx );
545	struct drm_i915_mmio io = {
546		.read_write = I915_MMIO_READ,
547		.reg = MMIO_REGS_PS_DEPTH_COUNT,
548		.data = &q->Result
549	};
550	intel->stats_wm++;
551	intelFinish(&intel->ctx);
552	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
553}
554
555static void
556intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
557{
558	struct intel_context *intel = intel_context( ctx );
559	GLuint64EXT tmp;
560	struct drm_i915_mmio io = {
561		.read_write = I915_MMIO_READ,
562		.reg = MMIO_REGS_PS_DEPTH_COUNT,
563		.data = &tmp
564	};
565	intelFinish(&intel->ctx);
566	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
567	q->Result = tmp - q->Result;
568	q->Ready = GL_TRUE;
569	intel->stats_wm--;
570}
571
572/** Driver-specific fence emit implementation for the fake memory manager. */
573static unsigned int
574intel_fence_emit(void *private)
575{
576   struct intel_context *intel = (struct intel_context *)private;
577   unsigned int fence;
578
579   /* XXX: Need to emit a flush, if we haven't already (at least with the
580    * current batchbuffer implementation, we have).
581    */
582
583   fence = intelEmitIrqLocked(intel);
584
585   return fence;
586}
587
588/** Driver-specific fence wait implementation for the fake memory manager. */
589static int
590intel_fence_wait(void *private, unsigned int cookie)
591{
592   struct intel_context *intel = (struct intel_context *)private;
593
594   intelWaitIrq(intel, cookie);
595
596   return 0;
597}
598
599static GLboolean
600intel_init_bufmgr(struct intel_context *intel)
601{
602   intelScreenPrivate *intelScreen = intel->intelScreen;
603   GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
604   int gem_kernel = 0;
605   GLboolean gem_supported;
606   struct drm_i915_getparam gp;
607
608   gp.param = I915_PARAM_HAS_GEM;
609   gp.value = &gem_kernel;
610
611   (void) drmCommandWriteRead(intel->driFd, DRM_I915_GETPARAM, &gp, sizeof(gp));
612
613   /* If we've got a new enough DDX that's initializing GEM and giving us
614    * object handles for the shared buffers, use that.
615    */
616   intel->ttm = GL_FALSE;
617   if (intel->intelScreen->driScrnPriv->dri2.enabled)
618       gem_supported = GL_TRUE;
619   else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
620	    gem_kernel &&
621	    intel->intelScreen->front.bo_handle != -1)
622       gem_supported = GL_TRUE;
623   else
624       gem_supported = GL_FALSE;
625
626   if (!gem_disable && gem_supported) {
627      int bo_reuse_mode;
628      intel->bufmgr = intel_bufmgr_gem_init(intel->driFd,
629					    BATCH_SZ);
630      if (intel->bufmgr != NULL)
631	 intel->ttm = GL_TRUE;
632
633      bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
634      switch (bo_reuse_mode) {
635      case DRI_CONF_BO_REUSE_DISABLED:
636	 break;
637      case DRI_CONF_BO_REUSE_ALL:
638	 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
639	 break;
640      }
641   }
642   /* Otherwise, use the classic buffer manager. */
643   if (intel->bufmgr == NULL) {
644      if (gem_disable) {
645	 fprintf(stderr, "GEM disabled.  Using classic.\n");
646      } else {
647	 fprintf(stderr, "Failed to initialize GEM.  "
648		 "Falling back to classic.\n");
649      }
650
651      if (intelScreen->tex.size == 0) {
652	 fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
653		 __func__, __LINE__);
654	 return GL_FALSE;
655      }
656
657      intel->bufmgr = intel_bufmgr_fake_init(intelScreen->tex.offset,
658					     intelScreen->tex.map,
659					     intelScreen->tex.size,
660					     intel_fence_emit,
661					     intel_fence_wait,
662					     intel);
663   }
664
665   /* XXX bufmgr should be per-screen, not per-context */
666   intelScreen->ttm = intel->ttm;
667
668   return GL_TRUE;
669}
670
671void
672intelInitDriverFunctions(struct dd_function_table *functions)
673{
674   _mesa_init_driver_functions(functions);
675
676   functions->Flush = intelFlush;
677   functions->Finish = intelFinish;
678   functions->GetString = intelGetString;
679   functions->UpdateState = intelInvalidateState;
680   functions->Viewport = intel_viewport;
681
682   functions->CopyColorTable = _swrast_CopyColorTable;
683   functions->CopyColorSubTable = _swrast_CopyColorSubTable;
684   functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
685   functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
686
687   functions->BeginQuery = intelBeginQuery;
688   functions->EndQuery = intelEndQuery;
689
690   intelInitTextureFuncs(functions);
691   intelInitStateFuncs(functions);
692   intelInitBufferFuncs(functions);
693   intelInitPixelFuncs(functions);
694}
695
696
697GLboolean
698intelInitContext(struct intel_context *intel,
699                 const __GLcontextModes * mesaVis,
700                 __DRIcontextPrivate * driContextPriv,
701                 void *sharedContextPrivate,
702                 struct dd_function_table *functions)
703{
704   GLcontext *ctx = &intel->ctx;
705   GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
706   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
707   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
708   volatile struct drm_i915_sarea *saPriv = (struct drm_i915_sarea *)
709      (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
710   int fthrottle_mode;
711
712   if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
713                                 functions, (void *) intel)) {
714      _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
715      return GL_FALSE;
716   }
717
718   driContextPriv->driverPrivate = intel;
719   intel->intelScreen = intelScreen;
720   intel->driScreen = sPriv;
721   intel->sarea = saPriv;
722   intel->driContext = driContextPriv;
723
724   /* Dri stuff */
725   intel->hHWContext = driContextPriv->hHWContext;
726   intel->driFd = sPriv->fd;
727   intel->driHwLock = sPriv->lock;
728
729   intel->width = intelScreen->width;
730   intel->height = intelScreen->height;
731
732   driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
733                       intel->driScreen->myNum,
734		       IS_965(intelScreen->deviceID) ? "i965" : "i915");
735   if (intelScreen->deviceID == PCI_CHIP_I865_G)
736      intel->maxBatchSize = 4096;
737   else
738      intel->maxBatchSize = BATCH_SZ;
739
740   if (!intel_init_bufmgr(intel))
741      return GL_FALSE;
742
743   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
744
745   /* This doesn't yet catch all non-conformant rendering, but it's a
746    * start.
747    */
748   if (getenv("INTEL_STRICT_CONFORMANCE")) {
749      intel->strict_conformance = 1;
750   }
751
752   if (intel->strict_conformance) {
753      ctx->Const.MinLineWidth = 1.0;
754      ctx->Const.MinLineWidthAA = 1.0;
755      ctx->Const.MaxLineWidth = 1.0;
756      ctx->Const.MaxLineWidthAA = 1.0;
757      ctx->Const.LineWidthGranularity = 1.0;
758   }
759   else {
760      ctx->Const.MinLineWidth = 1.0;
761      ctx->Const.MinLineWidthAA = 1.0;
762      ctx->Const.MaxLineWidth = 5.0;
763      ctx->Const.MaxLineWidthAA = 5.0;
764      ctx->Const.LineWidthGranularity = 0.5;
765   }
766
767   ctx->Const.MinPointSize = 1.0;
768   ctx->Const.MinPointSizeAA = 1.0;
769   ctx->Const.MaxPointSize = 255.0;
770   ctx->Const.MaxPointSizeAA = 3.0;
771   ctx->Const.PointSizeGranularity = 1.0;
772
773   /* reinitialize the context point state.
774    * It depend on constants in __GLcontextRec::Const
775    */
776   _mesa_init_point(ctx);
777
778   ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
779
780   /* Initialize the software rasterizer and helper modules. */
781   _swrast_CreateContext(ctx);
782   _vbo_CreateContext(ctx);
783   _tnl_CreateContext(ctx);
784   _swsetup_CreateContext(ctx);
785
786   /* Configure swrast to match hardware characteristics: */
787   _swrast_allow_pixel_fog(ctx, GL_FALSE);
788   _swrast_allow_vertex_fog(ctx, GL_TRUE);
789
790   intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
791   intel->hw_stipple = 1;
792
793   /* XXX FBO: this doesn't seem to be used anywhere */
794   switch (mesaVis->depthBits) {
795   case 0:                     /* what to do in this case? */
796   case 16:
797      intel->polygon_offset_scale = 1.0;
798      break;
799   case 24:
800      intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
801      break;
802   default:
803      assert(0);
804      break;
805   }
806
807   if (IS_965(intelScreen->deviceID))
808      intel->polygon_offset_scale /= 0xffff;
809
810   intel->RenderIndex = ~0;
811
812   fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
813   intel->irqsEmitted = 0;
814
815   intel->do_irqs = (intel->intelScreen->irq_active &&
816                     fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
817
818   intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
819
820   _math_matrix_ctr(&intel->ViewportMatrix);
821
822   if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
823      _mesa_printf("IRQs not active.  Exiting\n");
824      exit(1);
825   }
826
827   intelInitExtensions(ctx, GL_FALSE);
828
829   INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
830   if (INTEL_DEBUG & DEBUG_BUFMGR)
831      dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
832
833   if (!sPriv->dri2.enabled)
834      intel_recreate_static_regions(intel);
835
836   intel->batch = intel_batchbuffer_alloc(intel);
837
838   intel_bufferobj_init(intel);
839   intel_fbo_init(intel);
840
841   if (intel->ctx.Mesa_DXTn) {
842      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
843      _mesa_enable_extension(ctx, "GL_S3_s3tc");
844   }
845   else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
846      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
847   }
848
849   intel->prim.primitive = ~0;
850
851   /* Force all software fallbacks */
852   if (driQueryOptionb(&intel->optionCache, "no_rast")) {
853      fprintf(stderr, "disabling 3D rasterization\n");
854      intel->no_rast = 1;
855   }
856
857   /* Disable all hardware rendering (skip emitting batches and fences/waits
858    * to the kernel)
859    */
860   intel->no_hw = getenv("INTEL_NO_HW") != NULL;
861
862   return GL_TRUE;
863}
864
865void
866intelDestroyContext(__DRIcontextPrivate * driContextPriv)
867{
868   struct intel_context *intel =
869      (struct intel_context *) driContextPriv->driverPrivate;
870
871   assert(intel);               /* should never be null */
872   if (intel) {
873      GLboolean release_texture_heaps;
874
875      INTEL_FIREVERTICES(intel);
876
877      intel->vtbl.destroy(intel);
878
879      release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
880      _swsetup_DestroyContext(&intel->ctx);
881      _tnl_DestroyContext(&intel->ctx);
882      _vbo_DestroyContext(&intel->ctx);
883
884      _swrast_DestroyContext(&intel->ctx);
885      intel->Fallback = 0;      /* don't call _swrast_Flush later */
886
887      intel_batchbuffer_free(intel->batch);
888      free(intel->prim.vb);
889
890      if (release_texture_heaps) {
891         /* This share group is about to go away, free our private
892          * texture object data.
893          */
894         if (INTEL_DEBUG & DEBUG_TEXTURE)
895            fprintf(stderr, "do something to free texture heaps\n");
896      }
897
898      /* free the Mesa context */
899      _mesa_free_context_data(&intel->ctx);
900
901      dri_bufmgr_destroy(intel->bufmgr);
902   }
903}
904
905GLboolean
906intelUnbindContext(__DRIcontextPrivate * driContextPriv)
907{
908   return GL_TRUE;
909}
910
911GLboolean
912intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
913                 __DRIdrawablePrivate * driDrawPriv,
914                 __DRIdrawablePrivate * driReadPriv)
915{
916   __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
917
918   if (driContextPriv) {
919      struct intel_context *intel =
920         (struct intel_context *) driContextPriv->driverPrivate;
921      struct intel_framebuffer *intel_fb =
922	 (struct intel_framebuffer *) driDrawPriv->driverPrivate;
923      GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
924
925      if (driContextPriv->driScreenPriv->dri2.enabled) {
926          intel_update_renderbuffers(driContextPriv, driDrawPriv);
927          if (driDrawPriv != driReadPriv)
928              intel_update_renderbuffers(driContextPriv, driReadPriv);
929      } else {
930          /* XXX FBO temporary fix-ups! */
931          /* if the renderbuffers don't have regions, init them from the context */
932         struct intel_renderbuffer *irbDepth
933            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
934         struct intel_renderbuffer *irbStencil
935            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
936
937         if (intel_fb->color_rb[0]) {
938	    intel_renderbuffer_set_region(intel_fb->color_rb[0],
939					  intel->front_region);
940         }
941         if (intel_fb->color_rb[1]) {
942	    intel_renderbuffer_set_region(intel_fb->color_rb[1],
943					  intel->back_region);
944         }
945#if 0
946         if (intel_fb->color_rb[2]) {
947	    intel_renderbuffer_set_region(intel_fb->color_rb[2],
948					  intel->third_region);
949         }
950#endif
951         if (irbDepth) {
952	    intel_renderbuffer_set_region(irbDepth, intel->depth_region);
953         }
954         if (irbStencil) {
955	    intel_renderbuffer_set_region(irbStencil, intel->depth_region);
956         }
957      }
958
959      /* set GLframebuffer size to match window, if needed */
960      driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
961
962      if (driReadPriv != driDrawPriv) {
963	 driUpdateFramebufferSize(&intel->ctx, driReadPriv);
964      }
965
966      _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
967
968      /* The drawbuffer won't always be updated by _mesa_make_current:
969       */
970      if (intel->ctx.DrawBuffer == &intel_fb->Base) {
971
972	 if (intel->driReadDrawable != driReadPriv)
973	    intel->driReadDrawable = driReadPriv;
974
975	 if (intel->driDrawable != driDrawPriv) {
976	    if (driDrawPriv->swap_interval == (unsigned)-1) {
977	       int i;
978
979	       driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
980		  ? driGetDefaultVBlankFlags(&intel->optionCache)
981		 : VBLANK_FLAG_NO_IRQ;
982
983	       (*psp->systemTime->getUST) (&intel_fb->swap_ust);
984	       driDrawableInitVBlank(driDrawPriv);
985	       intel_fb->vbl_waited = driDrawPriv->vblSeq;
986
987	       for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
988		  if (intel_fb->color_rb[i])
989		     intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
990	       }
991	    }
992	    intel->driDrawable = driDrawPriv;
993	    intelWindowMoved(intel);
994	 }
995
996	 intel_draw_buffer(&intel->ctx, &intel_fb->Base);
997      }
998   }
999   else {
1000      _mesa_make_current(NULL, NULL, NULL);
1001   }
1002
1003   return GL_TRUE;
1004}
1005
1006static void
1007intelContendedLock(struct intel_context *intel, GLuint flags)
1008{
1009   __DRIdrawablePrivate *dPriv = intel->driDrawable;
1010   __DRIscreenPrivate *sPriv = intel->driScreen;
1011   volatile struct drm_i915_sarea *sarea = intel->sarea;
1012   int me = intel->hHWContext;
1013
1014   drmGetLock(intel->driFd, intel->hHWContext, flags);
1015   intel->locked = 1;
1016
1017   if (INTEL_DEBUG & DEBUG_LOCK)
1018      _mesa_printf("%s - got contended lock\n", __progname);
1019
1020   /* If the window moved, may need to set a new cliprect now.
1021    *
1022    * NOTE: This releases and regains the hw lock, so all state
1023    * checking must be done *after* this call:
1024    */
1025   if (dPriv)
1026       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1027
1028   if (sarea && sarea->ctxOwner != me) {
1029      if (INTEL_DEBUG & DEBUG_BUFMGR) {
1030	 fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1031		 sarea->ctxOwner, me);
1032      }
1033      sarea->ctxOwner = me;
1034   }
1035
1036   /* If the last consumer of the texture memory wasn't us, notify the fake
1037    * bufmgr and record the new owner.  We should have the memory shared
1038    * between contexts of a single fake bufmgr, but this will at least make
1039    * things correct for now.
1040    */
1041   if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1042      sarea->texAge = intel->hHWContext;
1043      intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1044      if (INTEL_DEBUG & DEBUG_BATCH)
1045	 intel_decode_context_reset();
1046      if (INTEL_DEBUG & DEBUG_BUFMGR)
1047	 fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1048		 sarea->ctxOwner, intel->hHWContext);
1049   }
1050
1051   if (sarea->width != intel->width || sarea->height != intel->height) {
1052       int numClipRects = intel->numClipRects;
1053
1054       /*
1055	* FIXME: Really only need to do this when drawing to a
1056	* common back- or front buffer.
1057	*/
1058
1059       /*
1060	* This will essentially drop the outstanding batchbuffer on
1061	* the floor.
1062	*/
1063       intel->numClipRects = 0;
1064
1065       if (intel->Fallback)
1066	   _swrast_flush(&intel->ctx);
1067
1068       if (!IS_965(intel->intelScreen->deviceID))
1069	   INTEL_FIREVERTICES(intel);
1070
1071       if (intel->batch->map != intel->batch->ptr)
1072	   intel_batchbuffer_flush(intel->batch);
1073
1074       intel->numClipRects = numClipRects;
1075
1076       /* force window update */
1077       intel->lastStamp = 0;
1078
1079       intel->width = sarea->width;
1080       intel->height = sarea->height;
1081   }
1082
1083   /* Drawable changed?
1084    */
1085   if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1086       intelWindowMoved(intel);
1087       intel->lastStamp = dPriv->lastStamp;
1088   }
1089}
1090
1091
1092_glthread_DECLARE_STATIC_MUTEX(lockMutex);
1093
1094/* Lock the hardware and validate our state.
1095 */
1096void LOCK_HARDWARE( struct intel_context *intel )
1097{
1098    __DRIdrawable *dPriv = intel->driDrawable;
1099    __DRIscreen *sPriv = intel->driScreen;
1100    char __ret = 0;
1101    struct intel_framebuffer *intel_fb = NULL;
1102    struct intel_renderbuffer *intel_rb = NULL;
1103
1104    _glthread_LOCK_MUTEX(lockMutex);
1105    assert(!intel->locked);
1106    intel->locked = 1;
1107
1108    if (intel->driDrawable) {
1109       intel_fb = intel->driDrawable->driverPrivate;
1110
1111       if (intel_fb)
1112	  intel_rb =
1113	     intel_get_renderbuffer(&intel_fb->Base,
1114				    intel_fb->Base._ColorDrawBufferIndexes[0]);
1115    }
1116
1117    if (intel_rb && dPriv->vblFlags &&
1118	!(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1119	(intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1120	drmVBlank vbl;
1121
1122	vbl.request.type = DRM_VBLANK_ABSOLUTE;
1123
1124	if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1125	    vbl.request.type |= DRM_VBLANK_SECONDARY;
1126	}
1127
1128	vbl.request.sequence = intel_rb->vbl_pending;
1129	drmWaitVBlank(intel->driFd, &vbl);
1130	intel_fb->vbl_waited = vbl.reply.sequence;
1131    }
1132
1133    if (!sPriv->dri2.enabled) {
1134	DRM_CAS(intel->driHwLock, intel->hHWContext,
1135		(DRM_LOCK_HELD|intel->hHWContext), __ret);
1136
1137	if (__ret)
1138	    intelContendedLock( intel, 0 );
1139    }
1140
1141
1142    if (INTEL_DEBUG & DEBUG_LOCK)
1143      _mesa_printf("%s - locked\n", __progname);
1144}
1145
1146
1147/* Unlock the hardware using the global current context
1148 */
1149void UNLOCK_HARDWARE( struct intel_context *intel )
1150{
1151    __DRIscreen *sPriv = intel->driScreen;
1152
1153   intel->vtbl.note_unlock( intel );
1154   intel->locked = 0;
1155
1156   if (!sPriv->dri2.enabled)
1157      DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1158
1159   _glthread_UNLOCK_MUTEX(lockMutex);
1160
1161   if (INTEL_DEBUG & DEBUG_LOCK)
1162      _mesa_printf("%s - unlocked\n", __progname);
1163
1164   /**
1165    * Nothing should be left in batch outside of LOCK/UNLOCK which references
1166    * cliprects.
1167    */
1168   if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1169      intel_batchbuffer_flush(intel->batch);
1170}
1171
1172