intel_context.c revision db9ba91971a1f279b040b30bf8fd5d13a70f0a03 
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_ARB_multisample
72#define need_GL_ARB_occlusion_query
73#define need_GL_ARB_point_parameters
74#define need_GL_ARB_shader_objects
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_vertex_shader
79#define need_GL_ARB_window_pos
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_point_parameters
89#define need_GL_EXT_secondary_color
90#define need_GL_ATI_separate_stencil
91#define need_GL_NV_point_sprite
92#define need_GL_NV_vertex_program
93#define need_GL_VERSION_2_0
94#define need_GL_VERSION_2_1
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_ARB_texture_border_clamp",       NULL },
351   { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
352   { "GL_ARB_texture_cube_map",           NULL },
353   { "GL_ARB_texture_env_add",            NULL },
354   { "GL_ARB_texture_env_combine",        NULL },
355   { "GL_ARB_texture_env_crossbar",       NULL },
356   { "GL_ARB_texture_env_dot3",           NULL },
357   { "GL_ARB_texture_mirrored_repeat",    NULL },
358   { "GL_ARB_texture_rectangle",          NULL },
359   { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
360   { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
361   { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
362   { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
363   { "GL_EXT_blend_equation_separate",    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_EXT_packed_depth_stencil",       NULL },
372   { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
373   { "GL_EXT_stencil_wrap",               NULL },
374   { "GL_EXT_texture_edge_clamp",         NULL },
375   { "GL_EXT_texture_env_combine",        NULL },
376   { "GL_EXT_texture_env_dot3",           NULL },
377   { "GL_EXT_texture_filter_anisotropic", NULL },
378   { "GL_EXT_texture_lod_bias",           NULL },
379   { "GL_3DFX_texture_compression_FXT1",  NULL },
380   { "GL_APPLE_client_storage",           NULL },
381   { "GL_MESA_pack_invert",               NULL },
382   { "GL_MESA_ycbcr_texture",             NULL },
383   { "GL_NV_blend_square",                NULL },
384   { "GL_NV_point_sprite",                GL_NV_point_sprite_functions },
385   { "GL_NV_vertex_program",              GL_NV_vertex_program_functions },
386   { "GL_NV_vertex_program1_1",           NULL },
387   { "GL_SGIS_generate_mipmap",           NULL },
388   { NULL, NULL }
389};
390
391static const struct dri_extension brw_extensions[] = {
392   { "GL_ARB_depth_texture",              NULL },
393   { "GL_ARB_draw_buffers",               NULL },
394   { "GL_ARB_fragment_program",           NULL },
395   { "GL_ARB_fragment_program_shadow",    NULL },
396   { "GL_ARB_fragment_shader",            NULL },
397   { "GL_ARB_point_sprite", 		  NULL },
398   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions },
399   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions },
400   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions },
401   { "GL_ARB_shadow",                     NULL },
402   { "GL_ARB_texture_non_power_of_two",   NULL },
403   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
404   { "GL_EXT_shadow_funcs",               NULL },
405   { "GL_EXT_texture_sRGB",		  NULL },
406   { "GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions },
407   { NULL,                                NULL }
408};
409
410#ifdef I915_MMIO_READ
411static const struct dri_extension arb_oc_extensions[] = {
412   { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
413   { NULL, NULL }
414};
415#endif
416
417static const struct dri_extension ttm_extensions[] = {
418   { "GL_ARB_pixel_buffer_object",        NULL },
419   { "GL_EXT_framebuffer_object",         GL_EXT_framebuffer_object_functions },
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#ifdef I915_MMIO_READ
441   if (intel == NULL ||
442       (IS_965(intel->intelScreen->deviceID) &&
443	intel->intelScreen->drmMinor >= 8))
444      driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
445#endif
446
447   if (intel == NULL || IS_965(intel->intelScreen->deviceID))
448      driInitExtensions(ctx, brw_extensions, GL_FALSE);
449}
450
451static const struct dri_debug_control debug_control[] = {
452   { "tex",   DEBUG_TEXTURE},
453   { "state", DEBUG_STATE},
454   { "ioctl", DEBUG_IOCTL},
455   { "blit",  DEBUG_BLIT},
456   { "mip",   DEBUG_MIPTREE},
457   { "fall",  DEBUG_FALLBACKS},
458   { "verb",  DEBUG_VERBOSE},
459   { "bat",   DEBUG_BATCH},
460   { "pix",   DEBUG_PIXEL},
461   { "buf",   DEBUG_BUFMGR},
462   { "reg",   DEBUG_REGION},
463   { "fbo",   DEBUG_FBO},
464   { "lock",  DEBUG_LOCK},
465   { "sync",  DEBUG_SYNC},
466   { "prim",  DEBUG_PRIMS },
467   { "vert",  DEBUG_VERTS },
468   { "dri",   DEBUG_DRI },
469   { "dma",   DEBUG_DMA },
470   { "san",   DEBUG_SANITY },
471   { "sleep", DEBUG_SLEEP },
472   { "stats", DEBUG_STATS },
473   { "tile",  DEBUG_TILE },
474   { "sing",  DEBUG_SINGLE_THREAD },
475   { "thre",  DEBUG_SINGLE_THREAD },
476   { "wm",    DEBUG_WM },
477   { "urb",   DEBUG_URB },
478   { "vs",    DEBUG_VS },
479   { NULL,    0 }
480};
481
482
483static void
484intelInvalidateState(GLcontext * ctx, GLuint new_state)
485{
486    struct intel_context *intel = intel_context(ctx);
487
488   _swrast_InvalidateState(ctx, new_state);
489   _swsetup_InvalidateState(ctx, new_state);
490   _vbo_InvalidateState(ctx, new_state);
491   _tnl_InvalidateState(ctx, new_state);
492   _tnl_invalidate_vertex_state(ctx, new_state);
493
494   intel->NewGLState |= new_state;
495
496   if (intel->vtbl.invalidate_state)
497      intel->vtbl.invalidate_state( intel, new_state );
498}
499
500
501void
502intelFlush(GLcontext * ctx)
503{
504   struct intel_context *intel = intel_context(ctx);
505
506   if (intel->Fallback)
507      _swrast_flush(ctx);
508
509   if (!IS_965(intel->intelScreen->deviceID))
510      INTEL_FIREVERTICES(intel);
511
512   /* Emit a flush so that any frontbuffer rendering that might have occurred
513    * lands onscreen in a timely manner, even if the X Server doesn't trigger
514    * a flush for us.
515    */
516   intel_batchbuffer_emit_mi_flush(intel->batch);
517
518   if (intel->batch->map != intel->batch->ptr)
519      intel_batchbuffer_flush(intel->batch);
520}
521
522void
523intelFinish(GLcontext * ctx)
524{
525   struct gl_framebuffer *fb = ctx->DrawBuffer;
526   int i;
527
528   intelFlush(ctx);
529
530   for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
531       struct intel_renderbuffer *irb;
532
533       irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
534
535       if (irb->region)
536	  dri_bo_wait_rendering(irb->region->buffer);
537   }
538   if (fb->_DepthBuffer) {
539      /* XXX: Wait on buffer idle */
540   }
541}
542
543#ifdef I915_MMIO_READ
544static void
545intelBeginQuery(GLcontext *ctx, struct gl_query_object *q)
546{
547	struct intel_context *intel = intel_context( ctx );
548	struct drm_i915_mmio io = {
549		.read_write = I915_MMIO_READ,
550		.reg = MMIO_REGS_PS_DEPTH_COUNT,
551		.data = &q->Result
552	};
553	intel->stats_wm++;
554	intelFinish(&intel->ctx);
555	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
556}
557
558static void
559intelEndQuery(GLcontext *ctx, struct gl_query_object *q)
560{
561	struct intel_context *intel = intel_context( ctx );
562	GLuint64EXT tmp;
563	struct drm_i915_mmio io = {
564		.read_write = I915_MMIO_READ,
565		.reg = MMIO_REGS_PS_DEPTH_COUNT,
566		.data = &tmp
567	};
568	intelFinish(&intel->ctx);
569	drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
570	q->Result = tmp - q->Result;
571	q->Ready = GL_TRUE;
572	intel->stats_wm--;
573}
574#endif
575
576void
577intelInitDriverFunctions(struct dd_function_table *functions)
578{
579   _mesa_init_driver_functions(functions);
580
581   functions->Flush = intelFlush;
582   functions->Finish = intelFinish;
583   functions->GetString = intelGetString;
584   functions->UpdateState = intelInvalidateState;
585   functions->Viewport = intel_viewport;
586
587   functions->CopyColorTable = _swrast_CopyColorTable;
588   functions->CopyColorSubTable = _swrast_CopyColorSubTable;
589   functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
590   functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
591
592#ifdef I915_MMIO_READ
593   functions->BeginQuery = intelBeginQuery;
594   functions->EndQuery = intelEndQuery;
595#endif
596
597   intelInitTextureFuncs(functions);
598   intelInitStateFuncs(functions);
599   intelInitBufferFuncs(functions);
600   intelInitPixelFuncs(functions);
601}
602
603
604GLboolean
605intelInitContext(struct intel_context *intel,
606                 const __GLcontextModes * mesaVis,
607                 __DRIcontextPrivate * driContextPriv,
608                 void *sharedContextPrivate,
609                 struct dd_function_table *functions)
610{
611   GLcontext *ctx = &intel->ctx;
612   GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
613   __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
614   intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
615   int fthrottle_mode;
616
617   if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
618                                 functions, (void *) intel)) {
619      _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
620      return GL_FALSE;
621   }
622
623   driContextPriv->driverPrivate = intel;
624   intel->intelScreen = intelScreen;
625   intel->driScreen = sPriv;
626   intel->sarea = intelScreen->sarea;
627   intel->driContext = driContextPriv;
628
629   /* Dri stuff */
630   intel->hHWContext = driContextPriv->hHWContext;
631   intel->driFd = sPriv->fd;
632   intel->driHwLock = sPriv->lock;
633
634   intel->width = intelScreen->width;
635   intel->height = intelScreen->height;
636
637   driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
638                       intel->driScreen->myNum,
639		       IS_965(intelScreen->deviceID) ? "i965" : "i915");
640   if (intelScreen->deviceID == PCI_CHIP_I865_G)
641      intel->maxBatchSize = 4096;
642   else
643      intel->maxBatchSize = BATCH_SZ;
644
645   intel->bufmgr = intelScreen->bufmgr;
646   intel->ttm = intelScreen->ttm;
647   if (intel->ttm) {
648      int bo_reuse_mode;
649
650      bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
651      switch (bo_reuse_mode) {
652      case DRI_CONF_BO_REUSE_DISABLED:
653	 break;
654      case DRI_CONF_BO_REUSE_ALL:
655	 intel_bufmgr_gem_enable_reuse(intel->bufmgr);
656	 break;
657      }
658   }
659
660   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
661
662   /* This doesn't yet catch all non-conformant rendering, but it's a
663    * start.
664    */
665   if (getenv("INTEL_STRICT_CONFORMANCE")) {
666      intel->strict_conformance = 1;
667   }
668
669   if (intel->strict_conformance) {
670      ctx->Const.MinLineWidth = 1.0;
671      ctx->Const.MinLineWidthAA = 1.0;
672      ctx->Const.MaxLineWidth = 1.0;
673      ctx->Const.MaxLineWidthAA = 1.0;
674      ctx->Const.LineWidthGranularity = 1.0;
675   }
676   else {
677      ctx->Const.MinLineWidth = 1.0;
678      ctx->Const.MinLineWidthAA = 1.0;
679      ctx->Const.MaxLineWidth = 5.0;
680      ctx->Const.MaxLineWidthAA = 5.0;
681      ctx->Const.LineWidthGranularity = 0.5;
682   }
683
684   ctx->Const.MinPointSize = 1.0;
685   ctx->Const.MinPointSizeAA = 1.0;
686   ctx->Const.MaxPointSize = 255.0;
687   ctx->Const.MaxPointSizeAA = 3.0;
688   ctx->Const.PointSizeGranularity = 1.0;
689
690   /* reinitialize the context point state.
691    * It depend on constants in __GLcontextRec::Const
692    */
693   _mesa_init_point(ctx);
694
695   ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
696
697   /* Initialize the software rasterizer and helper modules. */
698   _swrast_CreateContext(ctx);
699   _vbo_CreateContext(ctx);
700   _tnl_CreateContext(ctx);
701   _swsetup_CreateContext(ctx);
702
703   /* Configure swrast to match hardware characteristics: */
704   _swrast_allow_pixel_fog(ctx, GL_FALSE);
705   _swrast_allow_vertex_fog(ctx, GL_TRUE);
706
707   intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
708   intel->hw_stipple = 1;
709
710   /* XXX FBO: this doesn't seem to be used anywhere */
711   switch (mesaVis->depthBits) {
712   case 0:                     /* what to do in this case? */
713   case 16:
714      intel->polygon_offset_scale = 1.0;
715      break;
716   case 24:
717      intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
718      break;
719   default:
720      assert(0);
721      break;
722   }
723
724   if (IS_965(intelScreen->deviceID))
725      intel->polygon_offset_scale /= 0xffff;
726
727   intel->RenderIndex = ~0;
728
729   fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
730   intel->irqsEmitted = 0;
731
732   intel->do_irqs = (intel->intelScreen->irq_active &&
733                     fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
734
735   intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
736
737   _math_matrix_ctr(&intel->ViewportMatrix);
738
739   if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
740      _mesa_printf("IRQs not active.  Exiting\n");
741      exit(1);
742   }
743
744   intelInitExtensions(ctx, GL_FALSE);
745
746   INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
747   if (INTEL_DEBUG & DEBUG_BUFMGR)
748      dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
749
750   if (!sPriv->dri2.enabled)
751      intel_recreate_static_regions(intel);
752
753   intel->batch = intel_batchbuffer_alloc(intel);
754
755   intel_bufferobj_init(intel);
756   intel_fbo_init(intel);
757
758   if (intel->ctx.Mesa_DXTn) {
759      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
760      _mesa_enable_extension(ctx, "GL_S3_s3tc");
761   }
762   else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
763      _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
764   }
765
766   intel->prim.primitive = ~0;
767
768   /* Force all software fallbacks */
769   if (driQueryOptionb(&intel->optionCache, "no_rast")) {
770      fprintf(stderr, "disabling 3D rasterization\n");
771      intel->no_rast = 1;
772   }
773
774   /* Disable all hardware rendering (skip emitting batches and fences/waits
775    * to the kernel)
776    */
777   intel->no_hw = getenv("INTEL_NO_HW") != NULL;
778
779   return GL_TRUE;
780}
781
782void
783intelDestroyContext(__DRIcontextPrivate * driContextPriv)
784{
785   struct intel_context *intel =
786      (struct intel_context *) driContextPriv->driverPrivate;
787
788   assert(intel);               /* should never be null */
789   if (intel) {
790      GLboolean release_texture_heaps;
791
792      INTEL_FIREVERTICES(intel);
793
794      intel->vtbl.destroy(intel);
795
796      release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
797      _swsetup_DestroyContext(&intel->ctx);
798      _tnl_DestroyContext(&intel->ctx);
799      _vbo_DestroyContext(&intel->ctx);
800
801      _swrast_DestroyContext(&intel->ctx);
802      intel->Fallback = 0;      /* don't call _swrast_Flush later */
803
804      intel_batchbuffer_free(intel->batch);
805      intel->batch = NULL;
806
807      free(intel->prim.vb);
808      intel->prim.vb = NULL;
809      dri_bo_unreference(intel->prim.vb_bo);
810      intel->prim.vb_bo = NULL;
811
812      if (release_texture_heaps) {
813         /* This share group is about to go away, free our private
814          * texture object data.
815          */
816         if (INTEL_DEBUG & DEBUG_TEXTURE)
817            fprintf(stderr, "do something to free texture heaps\n");
818      }
819
820      intel_region_release(&intel->front_region);
821      intel_region_release(&intel->back_region);
822      intel_region_release(&intel->third_region);
823      intel_region_release(&intel->depth_region);
824
825      driDestroyOptionCache(&intel->optionCache);
826
827      /* free the Mesa context */
828      _mesa_free_context_data(&intel->ctx);
829   }
830}
831
832GLboolean
833intelUnbindContext(__DRIcontextPrivate * driContextPriv)
834{
835   return GL_TRUE;
836}
837
838GLboolean
839intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
840                 __DRIdrawablePrivate * driDrawPriv,
841                 __DRIdrawablePrivate * driReadPriv)
842{
843   __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
844
845   if (driContextPriv) {
846      struct intel_context *intel =
847         (struct intel_context *) driContextPriv->driverPrivate;
848      struct intel_framebuffer *intel_fb =
849	 (struct intel_framebuffer *) driDrawPriv->driverPrivate;
850      GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
851
852      if (driContextPriv->driScreenPriv->dri2.enabled) {
853          intel_update_renderbuffers(driContextPriv, driDrawPriv);
854          if (driDrawPriv != driReadPriv)
855              intel_update_renderbuffers(driContextPriv, driReadPriv);
856      } else {
857          /* XXX FBO temporary fix-ups! */
858          /* if the renderbuffers don't have regions, init them from the context */
859         struct intel_renderbuffer *irbDepth
860            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
861         struct intel_renderbuffer *irbStencil
862            = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
863
864         if (intel_fb->color_rb[0]) {
865	    intel_renderbuffer_set_region(intel_fb->color_rb[0],
866					  intel->front_region);
867         }
868         if (intel_fb->color_rb[1]) {
869	    intel_renderbuffer_set_region(intel_fb->color_rb[1],
870					  intel->back_region);
871         }
872#if 0
873         if (intel_fb->color_rb[2]) {
874	    intel_renderbuffer_set_region(intel_fb->color_rb[2],
875					  intel->third_region);
876         }
877#endif
878         if (irbDepth) {
879	    intel_renderbuffer_set_region(irbDepth, intel->depth_region);
880         }
881         if (irbStencil) {
882	    intel_renderbuffer_set_region(irbStencil, intel->depth_region);
883         }
884      }
885
886      /* set GLframebuffer size to match window, if needed */
887      driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
888
889      if (driReadPriv != driDrawPriv) {
890	 driUpdateFramebufferSize(&intel->ctx, driReadPriv);
891      }
892
893      _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
894
895      /* The drawbuffer won't always be updated by _mesa_make_current:
896       */
897      if (intel->ctx.DrawBuffer == &intel_fb->Base) {
898
899	 if (intel->driReadDrawable != driReadPriv)
900	    intel->driReadDrawable = driReadPriv;
901
902	 if (intel->driDrawable != driDrawPriv) {
903	    if (driDrawPriv->swap_interval == (unsigned)-1) {
904	       int i;
905
906	       driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
907		  ? driGetDefaultVBlankFlags(&intel->optionCache)
908		 : VBLANK_FLAG_NO_IRQ;
909
910	       (*psp->systemTime->getUST) (&intel_fb->swap_ust);
911	       driDrawableInitVBlank(driDrawPriv);
912	       intel_fb->vbl_waited = driDrawPriv->vblSeq;
913
914	       for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
915		  if (intel_fb->color_rb[i])
916		     intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
917	       }
918	    }
919	    intel->driDrawable = driDrawPriv;
920	    intelWindowMoved(intel);
921	 }
922
923	 intel_draw_buffer(&intel->ctx, &intel_fb->Base);
924      }
925   }
926   else {
927      _mesa_make_current(NULL, NULL, NULL);
928   }
929
930   return GL_TRUE;
931}
932
933static void
934intelContendedLock(struct intel_context *intel, GLuint flags)
935{
936   __DRIdrawablePrivate *dPriv = intel->driDrawable;
937   __DRIscreenPrivate *sPriv = intel->driScreen;
938   volatile struct drm_i915_sarea *sarea = intel->sarea;
939   int me = intel->hHWContext;
940
941   drmGetLock(intel->driFd, intel->hHWContext, flags);
942   intel->locked = 1;
943
944   if (INTEL_DEBUG & DEBUG_LOCK)
945      _mesa_printf("%s - got contended lock\n", __progname);
946
947   /* If the window moved, may need to set a new cliprect now.
948    *
949    * NOTE: This releases and regains the hw lock, so all state
950    * checking must be done *after* this call:
951    */
952   if (dPriv)
953       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
954
955   if (sarea && sarea->ctxOwner != me) {
956      if (INTEL_DEBUG & DEBUG_BUFMGR) {
957	 fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
958		 sarea->ctxOwner, me);
959      }
960      sarea->ctxOwner = me;
961   }
962
963   /* If the last consumer of the texture memory wasn't us, notify the fake
964    * bufmgr and record the new owner.  We should have the memory shared
965    * between contexts of a single fake bufmgr, but this will at least make
966    * things correct for now.
967    */
968   if (!intel->ttm && sarea->texAge != intel->hHWContext) {
969      sarea->texAge = intel->hHWContext;
970      intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
971      if (INTEL_DEBUG & DEBUG_BATCH)
972	 intel_decode_context_reset();
973      if (INTEL_DEBUG & DEBUG_BUFMGR)
974	 fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
975		 sarea->ctxOwner, intel->hHWContext);
976   }
977
978   if (sarea->width != intel->width || sarea->height != intel->height) {
979       int numClipRects = intel->numClipRects;
980
981       /*
982	* FIXME: Really only need to do this when drawing to a
983	* common back- or front buffer.
984	*/
985
986       /*
987	* This will essentially drop the outstanding batchbuffer on
988	* the floor.
989	*/
990       intel->numClipRects = 0;
991
992       if (intel->Fallback)
993	   _swrast_flush(&intel->ctx);
994
995       if (!IS_965(intel->intelScreen->deviceID))
996	   INTEL_FIREVERTICES(intel);
997
998       if (intel->batch->map != intel->batch->ptr)
999	   intel_batchbuffer_flush(intel->batch);
1000
1001       intel->numClipRects = numClipRects;
1002
1003       /* force window update */
1004       intel->lastStamp = 0;
1005
1006       intel->width = sarea->width;
1007       intel->height = sarea->height;
1008   }
1009
1010   /* Drawable changed?
1011    */
1012   if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1013       intelWindowMoved(intel);
1014       intel->lastStamp = dPriv->lastStamp;
1015   }
1016}
1017
1018
1019_glthread_DECLARE_STATIC_MUTEX(lockMutex);
1020
1021/* Lock the hardware and validate our state.
1022 */
1023void LOCK_HARDWARE( struct intel_context *intel )
1024{
1025    __DRIdrawable *dPriv = intel->driDrawable;
1026    __DRIscreen *sPriv = intel->driScreen;
1027    char __ret = 0;
1028    struct intel_framebuffer *intel_fb = NULL;
1029    struct intel_renderbuffer *intel_rb = NULL;
1030
1031    _glthread_LOCK_MUTEX(lockMutex);
1032    assert(!intel->locked);
1033    intel->locked = 1;
1034
1035    if (intel->driDrawable) {
1036       intel_fb = intel->driDrawable->driverPrivate;
1037
1038       if (intel_fb)
1039	  intel_rb =
1040	     intel_get_renderbuffer(&intel_fb->Base,
1041				    intel_fb->Base._ColorDrawBufferIndexes[0]);
1042    }
1043
1044    if (intel_rb && dPriv->vblFlags &&
1045	!(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1046	(intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1047	drmVBlank vbl;
1048
1049	vbl.request.type = DRM_VBLANK_ABSOLUTE;
1050
1051	if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1052	    vbl.request.type |= DRM_VBLANK_SECONDARY;
1053	}
1054
1055	vbl.request.sequence = intel_rb->vbl_pending;
1056	drmWaitVBlank(intel->driFd, &vbl);
1057	intel_fb->vbl_waited = vbl.reply.sequence;
1058    }
1059
1060    if (!sPriv->dri2.enabled) {
1061	DRM_CAS(intel->driHwLock, intel->hHWContext,
1062		(DRM_LOCK_HELD|intel->hHWContext), __ret);
1063
1064	if (__ret)
1065	    intelContendedLock( intel, 0 );
1066    }
1067
1068
1069    if (INTEL_DEBUG & DEBUG_LOCK)
1070      _mesa_printf("%s - locked\n", __progname);
1071}
1072
1073
1074/* Unlock the hardware using the global current context
1075 */
1076void UNLOCK_HARDWARE( struct intel_context *intel )
1077{
1078    __DRIscreen *sPriv = intel->driScreen;
1079
1080   intel->vtbl.note_unlock( intel );
1081   intel->locked = 0;
1082
1083   if (!sPriv->dri2.enabled)
1084      DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1085
1086   _glthread_UNLOCK_MUTEX(lockMutex);
1087
1088   if (INTEL_DEBUG & DEBUG_LOCK)
1089      _mesa_printf("%s - unlocked\n", __progname);
1090
1091   /**
1092    * Nothing should be left in batch outside of LOCK/UNLOCK which references
1093    * cliprects.
1094    */
1095   if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1096      intel_batchbuffer_flush(intel->batch);
1097}
1098
1099