intel_screen.c revision 96fd94ba9421c7c3072988f999ee869534f2bc2a 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <errno.h>
29#include "main/glheader.h"
30#include "main/context.h"
31#include "main/framebuffer.h"
32#include "main/renderbuffer.h"
33#include "main/hash.h"
34#include "main/fbobject.h"
35#include "main/mfeatures.h"
36#include "main/version.h"
37#include "swrast/s_renderbuffer.h"
38
39#include "utils.h"
40#include "xmlpool.h"
41
42PUBLIC const char __driConfigOptions[] =
43   DRI_CONF_BEGIN
44   DRI_CONF_SECTION_PERFORMANCE
45      DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
46      /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
47       * DRI_CONF_BO_REUSE_ALL
48       */
49      DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
50	 DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
51	    DRI_CONF_ENUM(0, "Disable buffer object reuse")
52	    DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
53	 DRI_CONF_DESC_END
54      DRI_CONF_OPT_END
55
56      DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
57	 DRI_CONF_DESC(en, "Enable texture tiling")
58      DRI_CONF_OPT_END
59
60      DRI_CONF_OPT_BEGIN(hiz, bool, true)
61	 DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
62      DRI_CONF_OPT_END
63
64      DRI_CONF_OPT_BEGIN(early_z, bool, false)
65	 DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
66      DRI_CONF_OPT_END
67
68      DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
69	 DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
70      DRI_CONF_OPT_END
71
72   DRI_CONF_SECTION_END
73   DRI_CONF_SECTION_QUALITY
74      DRI_CONF_FORCE_S3TC_ENABLE(false)
75      DRI_CONF_ALLOW_LARGE_TEXTURES(2)
76   DRI_CONF_SECTION_END
77   DRI_CONF_SECTION_DEBUG
78     DRI_CONF_NO_RAST(false)
79     DRI_CONF_ALWAYS_FLUSH_BATCH(false)
80     DRI_CONF_ALWAYS_FLUSH_CACHE(false)
81     DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
82     DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(false)
83
84      DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
85	 DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
86      DRI_CONF_OPT_END
87
88      DRI_CONF_OPT_BEGIN(shader_precompile, bool, true)
89	 DRI_CONF_DESC(en, "Perform code generation at shader link time.")
90      DRI_CONF_OPT_END
91   DRI_CONF_SECTION_END
92DRI_CONF_END;
93
94const GLuint __driNConfigOptions = 15;
95
96#include "intel_batchbuffer.h"
97#include "intel_buffers.h"
98#include "intel_bufmgr.h"
99#include "intel_chipset.h"
100#include "intel_fbo.h"
101#include "intel_mipmap_tree.h"
102#include "intel_screen.h"
103#include "intel_tex.h"
104#include "intel_regions.h"
105
106#include "i915_drm.h"
107
108#ifdef USE_NEW_INTERFACE
109static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
110#endif /*USE_NEW_INTERFACE */
111
112/**
113 * For debugging purposes, this returns a time in seconds.
114 */
115double
116get_time(void)
117{
118   struct timespec tp;
119
120   clock_gettime(CLOCK_MONOTONIC, &tp);
121
122   return tp.tv_sec + tp.tv_nsec / 1000000000.0;
123}
124
125void
126aub_dump_bmp(struct gl_context *ctx)
127{
128   struct gl_framebuffer *fb = ctx->DrawBuffer;
129
130   for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
131      struct intel_renderbuffer *irb =
132	 intel_renderbuffer(fb->_ColorDrawBuffers[i]);
133
134      if (irb && irb->mt) {
135	 enum aub_dump_bmp_format format;
136
137	 switch (irb->Base.Base.Format) {
138	 case MESA_FORMAT_ARGB8888:
139	 case MESA_FORMAT_XRGB8888:
140	    format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
141	    break;
142	 default:
143	    continue;
144	 }
145
146	 drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
147				       irb->draw_x,
148				       irb->draw_y,
149				       irb->Base.Base.Width,
150				       irb->Base.Base.Height,
151				       format,
152				       irb->mt->region->pitch *
153				       irb->mt->region->cpp,
154				       0);
155      }
156   }
157}
158
159static const __DRItexBufferExtension intelTexBufferExtension = {
160    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
161   intelSetTexBuffer,
162   intelSetTexBuffer2,
163};
164
165static void
166intelDRI2Flush(__DRIdrawable *drawable)
167{
168   GET_CURRENT_CONTEXT(ctx);
169   struct intel_context *intel = intel_context(ctx);
170   if (intel == NULL)
171      return;
172
173   if (intel->gen < 4)
174      INTEL_FIREVERTICES(intel);
175
176   intel_downsample_for_dri2_flush(intel, drawable);
177   intel->need_throttle = true;
178
179   if (intel->batch.used)
180      intel_batchbuffer_flush(intel);
181
182   if (INTEL_DEBUG & DEBUG_AUB) {
183      aub_dump_bmp(ctx);
184   }
185}
186
187static const struct __DRI2flushExtensionRec intelFlushExtension = {
188    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
189    intelDRI2Flush,
190    dri2InvalidateDrawable,
191};
192
193struct intel_image_format intel_image_formats[] = {
194   { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
195     { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
196
197   { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
198     { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
199
200   { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
201     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
202       { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
203       { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
204
205   { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
206     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
207       { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
208       { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
209
210   { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
211     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
212       { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
213       { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
214
215   { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
216     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
217       { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
218       { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
219
220   { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
221     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
222       { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
223       { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
224
225   { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
226     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
227       { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
228
229   { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
230     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
231       { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
232
233   /* For YUYV buffers, we set up two overlapping DRI images and treat
234    * them as planar buffers in the compositors.  Plane 0 is GR88 and
235    * samples YU or YV pairs and places Y into the R component, while
236    * plane 1 is ARGB and samples YUYV clusters and places pairs and
237    * places U into the G component and V into A.  This lets the
238    * texture sampler interpolate the Y components correctly when
239    * sampling from plane 0, and interpolate U and V correctly when
240    * sampling from plane 1. */
241   { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
242     { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
243       { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
244};
245
246static __DRIimage *
247intel_allocate_image(int dri_format, void *loaderPrivate)
248{
249    __DRIimage *image;
250
251    image = CALLOC(sizeof *image);
252    if (image == NULL)
253	return NULL;
254
255    image->dri_format = dri_format;
256    image->offset = 0;
257
258    switch (dri_format) {
259    case __DRI_IMAGE_FORMAT_RGB565:
260       image->format = MESA_FORMAT_RGB565;
261       break;
262    case __DRI_IMAGE_FORMAT_XRGB8888:
263       image->format = MESA_FORMAT_XRGB8888;
264       break;
265    case __DRI_IMAGE_FORMAT_ARGB8888:
266       image->format = MESA_FORMAT_ARGB8888;
267       break;
268    case __DRI_IMAGE_FORMAT_ABGR8888:
269       image->format = MESA_FORMAT_RGBA8888_REV;
270       break;
271    case __DRI_IMAGE_FORMAT_XBGR8888:
272       image->format = MESA_FORMAT_RGBX8888_REV;
273       break;
274    case __DRI_IMAGE_FORMAT_R8:
275       image->format = MESA_FORMAT_R8;
276       break;
277    case __DRI_IMAGE_FORMAT_GR88:
278       image->format = MESA_FORMAT_GR88;
279       break;
280    case __DRI_IMAGE_FORMAT_NONE:
281       image->format = MESA_FORMAT_NONE;
282       break;
283    default:
284       free(image);
285       return NULL;
286    }
287
288    image->internal_format = _mesa_get_format_base_format(image->format);
289    image->data = loaderPrivate;
290
291    return image;
292}
293
294static __DRIimage *
295intel_create_image_from_name(__DRIscreen *screen,
296			     int width, int height, int format,
297			     int name, int pitch, void *loaderPrivate)
298{
299    struct intel_screen *intelScreen = screen->driverPrivate;
300    __DRIimage *image;
301    int cpp;
302
303    image = intel_allocate_image(format, loaderPrivate);
304    if (image->format == MESA_FORMAT_NONE)
305       cpp = 1;
306    else
307       cpp = _mesa_get_format_bytes(image->format);
308    image->region = intel_region_alloc_for_handle(intelScreen,
309						  cpp, width, height,
310						  pitch, name, "image");
311    if (image->region == NULL) {
312       FREE(image);
313       return NULL;
314    }
315
316    return image;
317}
318
319static __DRIimage *
320intel_create_image_from_renderbuffer(__DRIcontext *context,
321				     int renderbuffer, void *loaderPrivate)
322{
323   __DRIimage *image;
324   struct intel_context *intel = context->driverPrivate;
325   struct gl_renderbuffer *rb;
326   struct intel_renderbuffer *irb;
327
328   rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
329   if (!rb) {
330      _mesa_error(&intel->ctx,
331		  GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
332      return NULL;
333   }
334
335   irb = intel_renderbuffer(rb);
336   image = CALLOC(sizeof *image);
337   if (image == NULL)
338      return NULL;
339
340   image->internal_format = rb->InternalFormat;
341   image->format = rb->Format;
342   image->offset = 0;
343   image->data = loaderPrivate;
344   intel_region_reference(&image->region, irb->mt->region);
345
346   switch (image->format) {
347   case MESA_FORMAT_RGB565:
348      image->dri_format = __DRI_IMAGE_FORMAT_RGB565;
349      break;
350   case MESA_FORMAT_XRGB8888:
351      image->dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
352      break;
353   case MESA_FORMAT_ARGB8888:
354      image->dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
355      break;
356   case MESA_FORMAT_RGBA8888_REV:
357      image->dri_format = __DRI_IMAGE_FORMAT_ABGR8888;
358      break;
359   case MESA_FORMAT_R8:
360      image->dri_format = __DRI_IMAGE_FORMAT_R8;
361      break;
362   case MESA_FORMAT_RG88:
363      image->dri_format = __DRI_IMAGE_FORMAT_GR88;
364      break;
365   }
366
367   return image;
368}
369
370static void
371intel_destroy_image(__DRIimage *image)
372{
373    intel_region_release(&image->region);
374    FREE(image);
375}
376
377static __DRIimage *
378intel_create_image(__DRIscreen *screen,
379		   int width, int height, int format,
380		   unsigned int use,
381		   void *loaderPrivate)
382{
383   __DRIimage *image;
384   struct intel_screen *intelScreen = screen->driverPrivate;
385   uint32_t tiling;
386   int cpp;
387
388   tiling = I915_TILING_X;
389   if (use & __DRI_IMAGE_USE_CURSOR) {
390      if (width != 64 || height != 64)
391	 return NULL;
392      tiling = I915_TILING_NONE;
393   }
394
395   image = intel_allocate_image(format, loaderPrivate);
396   cpp = _mesa_get_format_bytes(image->format);
397   image->region =
398      intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
399   if (image->region == NULL) {
400      FREE(image);
401      return NULL;
402   }
403
404   return image;
405}
406
407static GLboolean
408intel_query_image(__DRIimage *image, int attrib, int *value)
409{
410   switch (attrib) {
411   case __DRI_IMAGE_ATTRIB_STRIDE:
412      *value = image->region->pitch * image->region->cpp;
413      return true;
414   case __DRI_IMAGE_ATTRIB_HANDLE:
415      *value = image->region->bo->handle;
416      return true;
417   case __DRI_IMAGE_ATTRIB_NAME:
418      return intel_region_flink(image->region, (uint32_t *) value);
419   case __DRI_IMAGE_ATTRIB_FORMAT:
420      *value = image->dri_format;
421      return true;
422   case __DRI_IMAGE_ATTRIB_WIDTH:
423      *value = image->region->width;
424      return true;
425   case __DRI_IMAGE_ATTRIB_HEIGHT:
426      *value = image->region->height;
427      return true;
428   case __DRI_IMAGE_ATTRIB_COMPONENTS:
429      if (image->planar_format == NULL)
430         return false;
431      *value = image->planar_format->components;
432      return true;
433  default:
434      return false;
435   }
436}
437
438static __DRIimage *
439intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
440{
441   __DRIimage *image;
442
443   image = CALLOC(sizeof *image);
444   if (image == NULL)
445      return NULL;
446
447   intel_region_reference(&image->region, orig_image->region);
448   if (image->region == NULL) {
449      FREE(image);
450      return NULL;
451   }
452
453   image->internal_format = orig_image->internal_format;
454   image->planar_format   = orig_image->planar_format;
455   image->dri_format      = orig_image->dri_format;
456   image->format          = orig_image->format;
457   image->offset          = orig_image->offset;
458   image->data            = loaderPrivate;
459
460   memcpy(image->strides, orig_image->strides, sizeof(image->strides));
461   memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
462
463   return image;
464}
465
466static GLboolean
467intel_validate_usage(__DRIimage *image, unsigned int use)
468{
469   if (use & __DRI_IMAGE_USE_CURSOR) {
470      if (image->region->width != 64 || image->region->height != 64)
471	 return GL_FALSE;
472   }
473
474   return GL_TRUE;
475}
476
477static __DRIimage *
478intel_create_image_from_names(__DRIscreen *screen,
479                              int width, int height, int fourcc,
480                              int *names, int num_names,
481                              int *strides, int *offsets,
482                              void *loaderPrivate)
483{
484    struct intel_image_format *f = NULL;
485    __DRIimage *image;
486    int i, index;
487
488    if (screen == NULL || names == NULL || num_names != 1)
489        return NULL;
490
491    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
492        if (intel_image_formats[i].fourcc == fourcc) {
493           f = &intel_image_formats[i];
494        }
495    }
496
497    if (f == NULL)
498        return NULL;
499
500    image = intel_create_image_from_name(screen, width, height,
501                                         __DRI_IMAGE_FORMAT_NONE,
502                                         names[0], strides[0],
503                                         loaderPrivate);
504
505    if (image == NULL)
506        return NULL;
507
508    image->planar_format = f;
509    for (i = 0; i < f->nplanes; i++) {
510        index = f->planes[i].buffer_index;
511        image->offsets[index] = offsets[index];
512        image->strides[index] = strides[index];
513    }
514
515    return image;
516}
517
518static __DRIimage *
519intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
520{
521    int width, height, offset, stride, dri_format, cpp, index, pitch;
522    struct intel_image_format *f;
523    uint32_t mask_x, mask_y;
524    __DRIimage *image;
525
526    if (parent == NULL || parent->planar_format == NULL)
527        return NULL;
528
529    f = parent->planar_format;
530
531    if (plane >= f->nplanes)
532        return NULL;
533
534    width = parent->region->width >> f->planes[plane].width_shift;
535    height = parent->region->height >> f->planes[plane].height_shift;
536    dri_format = f->planes[plane].dri_format;
537    index = f->planes[plane].buffer_index;
538    offset = parent->offsets[index];
539    stride = parent->strides[index];
540
541    image = intel_allocate_image(dri_format, loaderPrivate);
542    cpp = _mesa_get_format_bytes(image->format); /* safe since no none format */
543    pitch = stride / cpp;
544    if (offset + height * cpp * pitch > parent->region->bo->size) {
545       _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
546       FREE(image);
547       return NULL;
548    }
549
550    image->region = calloc(sizeof(*image->region), 1);
551    if (image->region == NULL) {
552       FREE(image);
553       return NULL;
554    }
555
556    image->region->cpp = _mesa_get_format_bytes(image->format);
557    image->region->width = width;
558    image->region->height = height;
559    image->region->pitch = pitch;
560    image->region->refcount = 1;
561    image->region->bo = parent->region->bo;
562    drm_intel_bo_reference(image->region->bo);
563    image->region->tiling = parent->region->tiling;
564    image->region->screen = parent->region->screen;
565    image->offset = offset;
566
567    intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
568    if (offset & mask_x)
569       _mesa_warning(NULL,
570                     "intel_create_sub_image: offset not on tile boundary");
571
572    return image;
573}
574
575static struct __DRIimageExtensionRec intelImageExtension = {
576    { __DRI_IMAGE, 5 },
577    intel_create_image_from_name,
578    intel_create_image_from_renderbuffer,
579    intel_destroy_image,
580    intel_create_image,
581    intel_query_image,
582    intel_dup_image,
583    intel_validate_usage,
584    intel_create_image_from_names,
585    intel_from_planar
586};
587
588static const __DRIextension *intelScreenExtensions[] = {
589    &intelTexBufferExtension.base,
590    &intelFlushExtension.base,
591    &intelImageExtension.base,
592    &dri2ConfigQueryExtension.base,
593    NULL
594};
595
596static bool
597intel_get_param(__DRIscreen *psp, int param, int *value)
598{
599   int ret;
600   struct drm_i915_getparam gp;
601
602   memset(&gp, 0, sizeof(gp));
603   gp.param = param;
604   gp.value = value;
605
606   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
607   if (ret) {
608      if (ret != -EINVAL)
609	 _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
610      return false;
611   }
612
613   return true;
614}
615
616static bool
617intel_get_boolean(__DRIscreen *psp, int param)
618{
619   int value = 0;
620   return intel_get_param(psp, param, &value) && value;
621}
622
623static void
624nop_callback(GLuint key, void *data, void *userData)
625{
626}
627
628static void
629intelDestroyScreen(__DRIscreen * sPriv)
630{
631   struct intel_screen *intelScreen = sPriv->driverPrivate;
632
633   dri_bufmgr_destroy(intelScreen->bufmgr);
634   driDestroyOptionInfo(&intelScreen->optionCache);
635
636   /* Some regions may still have references to them at this point, so
637    * flush the hash table to prevent _mesa_DeleteHashTable() from
638    * complaining about the hash not being empty; */
639   _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
640   _mesa_DeleteHashTable(intelScreen->named_regions);
641
642   FREE(intelScreen);
643   sPriv->driverPrivate = NULL;
644}
645
646
647/**
648 * This is called when we need to set up GL rendering to a new X window.
649 */
650static GLboolean
651intelCreateBuffer(__DRIscreen * driScrnPriv,
652                  __DRIdrawable * driDrawPriv,
653                  const struct gl_config * mesaVis, GLboolean isPixmap)
654{
655   struct intel_renderbuffer *rb;
656   struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
657   gl_format rgbFormat;
658   unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
659   struct gl_framebuffer *fb;
660
661   if (isPixmap)
662      return false;
663
664   fb = CALLOC_STRUCT(gl_framebuffer);
665   if (!fb)
666      return false;
667
668   _mesa_initialize_window_framebuffer(fb, mesaVis);
669
670   if (mesaVis->redBits == 5)
671      rgbFormat = MESA_FORMAT_RGB565;
672   else if (mesaVis->alphaBits == 0)
673      rgbFormat = MESA_FORMAT_XRGB8888;
674   else
675      rgbFormat = MESA_FORMAT_ARGB8888;
676
677   /* setup the hardware-based renderbuffers */
678   rb = intel_create_renderbuffer(rgbFormat, num_samples);
679   _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
680
681   if (mesaVis->doubleBufferMode) {
682      rb = intel_create_renderbuffer(rgbFormat, num_samples);
683      _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
684   }
685
686   /*
687    * Assert here that the gl_config has an expected depth/stencil bit
688    * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
689    * which constructs the advertised configs.)
690    */
691   if (mesaVis->depthBits == 24) {
692      assert(mesaVis->stencilBits == 8);
693
694      if (screen->hw_has_separate_stencil) {
695         rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
696                                                num_samples);
697         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
698         rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
699                                                num_samples);
700         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
701      } else {
702         /*
703          * Use combined depth/stencil. Note that the renderbuffer is
704          * attached to two attachment points.
705          */
706         rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
707                                                num_samples);
708         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
709         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
710      }
711   }
712   else if (mesaVis->depthBits == 16) {
713      assert(mesaVis->stencilBits == 0);
714      rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
715                                             num_samples);
716      _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
717   }
718   else {
719      assert(mesaVis->depthBits == 0);
720      assert(mesaVis->stencilBits == 0);
721   }
722
723   /* now add any/all software-based renderbuffers we may need */
724   _swrast_add_soft_renderbuffers(fb,
725                                  false, /* never sw color */
726                                  false, /* never sw depth */
727                                  false, /* never sw stencil */
728                                  mesaVis->accumRedBits > 0,
729                                  false, /* never sw alpha */
730                                  false  /* never sw aux */ );
731   driDrawPriv->driverPrivate = fb;
732
733   return true;
734}
735
736static void
737intelDestroyBuffer(__DRIdrawable * driDrawPriv)
738{
739    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
740
741    _mesa_reference_framebuffer(&fb, NULL);
742}
743
744/* There are probably better ways to do this, such as an
745 * init-designated function to register chipids and createcontext
746 * functions.
747 */
748extern bool
749i830CreateContext(const struct gl_config *mesaVis,
750		  __DRIcontext *driContextPriv,
751		  void *sharedContextPrivate);
752
753extern bool
754i915CreateContext(int api,
755		  const struct gl_config *mesaVis,
756		  __DRIcontext *driContextPriv,
757                  unsigned major_version,
758                  unsigned minor_version,
759                  unsigned *error,
760		  void *sharedContextPrivate);
761extern bool
762brwCreateContext(int api,
763	         const struct gl_config *mesaVis,
764	         __DRIcontext *driContextPriv,
765                 unsigned major_version,
766                 unsigned minor_version,
767                 uint32_t flags,
768                 unsigned *error,
769		 void *sharedContextPrivate);
770
771static GLboolean
772intelCreateContext(gl_api api,
773		   const struct gl_config * mesaVis,
774                   __DRIcontext * driContextPriv,
775		   unsigned major_version,
776		   unsigned minor_version,
777		   uint32_t flags,
778		   unsigned *error,
779                   void *sharedContextPrivate)
780{
781   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
782   struct intel_screen *intelScreen = sPriv->driverPrivate;
783   bool success = false;
784
785#ifdef I915
786   if (IS_9XX(intelScreen->deviceID)) {
787      success = i915CreateContext(api, mesaVis, driContextPriv,
788                                  major_version, minor_version, error,
789                                  sharedContextPrivate);
790   } else {
791      switch (api) {
792      case API_OPENGL:
793         if (major_version > 1 || minor_version > 3) {
794            *error = __DRI_CTX_ERROR_BAD_VERSION;
795            success = false;
796         }
797         break;
798      case API_OPENGLES:
799         break;
800      default:
801         *error = __DRI_CTX_ERROR_BAD_API;
802         success = false;
803      }
804
805      if (success) {
806         intelScreen->no_vbo = true;
807         success = i830CreateContext(mesaVis, driContextPriv,
808                                     sharedContextPrivate);
809         if (!success)
810            *error = __DRI_CTX_ERROR_NO_MEMORY;
811      }
812   }
813#else
814   success = brwCreateContext(api, mesaVis,
815                              driContextPriv,
816                              major_version, minor_version, flags,
817                              error, sharedContextPrivate);
818#endif
819
820   if (success)
821      return true;
822
823   intelDestroyContext(driContextPriv);
824   return false;
825}
826
827static bool
828intel_init_bufmgr(struct intel_screen *intelScreen)
829{
830   __DRIscreen *spriv = intelScreen->driScrnPriv;
831   int num_fences = 0;
832
833   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
834
835   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
836   if (intelScreen->bufmgr == NULL) {
837      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
838	      __func__, __LINE__);
839      return false;
840   }
841
842   if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
843       num_fences == 0) {
844      fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
845      return false;
846   }
847
848   drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
849
850   intelScreen->named_regions = _mesa_NewHashTable();
851
852   intelScreen->relaxed_relocations = 0;
853   intelScreen->relaxed_relocations |=
854      intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
855
856   return true;
857}
858
859/**
860 * Override intel_screen.hw_has_separate_stencil with environment variable
861 * INTEL_SEPARATE_STENCIL.
862 *
863 * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
864 * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
865 * is ignored.
866 */
867static void
868intel_override_separate_stencil(struct intel_screen *screen)
869{
870   const char *s = getenv("INTEL_SEPARATE_STENCIL");
871   if (!s) {
872      return;
873   } else if (!strncmp("0", s, 2)) {
874      screen->hw_has_separate_stencil = false;
875   } else if (!strncmp("1", s, 2)) {
876      screen->hw_has_separate_stencil = true;
877   } else {
878      fprintf(stderr,
879	      "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
880	      "invalid value and is ignored", s);
881   }
882}
883
884static bool
885intel_detect_swizzling(struct intel_screen *screen)
886{
887   drm_intel_bo *buffer;
888   unsigned long flags = 0;
889   unsigned long aligned_pitch;
890   uint32_t tiling = I915_TILING_X;
891   uint32_t swizzle_mode = 0;
892
893   buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
894				     64, 64, 4,
895				     &tiling, &aligned_pitch, flags);
896   if (buffer == NULL)
897      return false;
898
899   drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
900   drm_intel_bo_unreference(buffer);
901
902   if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
903      return false;
904   else
905      return true;
906}
907
908static __DRIconfig**
909intel_screen_make_configs(__DRIscreen *dri_screen)
910{
911   static const GLenum back_buffer_modes[] = {
912       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
913   };
914
915   static const uint8_t singlesample_samples[1] = {0};
916   static const uint8_t multisample_samples[2]  = {4, 8};
917
918   struct intel_screen *screen = dri_screen->driverPrivate;
919   GLenum fb_format[3];
920   GLenum fb_type[3];
921   uint8_t depth_bits[4], stencil_bits[4];
922   __DRIconfig **configs = NULL;
923
924   fb_format[0] = GL_RGB;
925   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
926
927   fb_format[1] = GL_BGR;
928   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
929
930   fb_format[2] = GL_BGRA;
931   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
932
933   /* Generate singlesample configs without accumulation buffer. */
934   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
935      __DRIconfig **new_configs;
936      const int num_depth_stencil_bits = 2;
937
938      /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
939       * buffer that has a different number of bits per pixel than the color
940       * buffer.  This isn't yet supported here.
941       */
942      depth_bits[0] = 0;
943      stencil_bits[0] = 0;
944
945      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
946         depth_bits[1] = 16;
947         stencil_bits[1] = 0;
948      } else {
949         depth_bits[1] = 24;
950         stencil_bits[1] = 8;
951      }
952
953      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
954                                     depth_bits,
955                                     stencil_bits,
956                                     num_depth_stencil_bits,
957                                     back_buffer_modes,
958                                     ARRAY_SIZE(back_buffer_modes),
959                                     singlesample_samples, 1,
960                                     false);
961      configs = driConcatConfigs(configs, new_configs);
962   }
963
964   /* Generate the minimum possible set of configs that include an
965    * accumulation buffer.
966    */
967   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
968      __DRIconfig **new_configs;
969
970      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
971         depth_bits[0] = 16;
972         stencil_bits[0] = 0;
973      } else {
974         depth_bits[0] = 24;
975         stencil_bits[0] = 8;
976      }
977
978      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
979                                     depth_bits, stencil_bits, 1,
980                                     back_buffer_modes + 1, 1,
981                                     singlesample_samples, 1,
982                                     true);
983      configs = driConcatConfigs(configs, new_configs);
984   }
985
986   /* Generate multisample configs.
987    *
988    * This loop breaks early, and hence is a no-op, on gen < 6.
989    *
990    * Multisample configs must follow the singlesample configs in order to
991    * work around an X server bug present in 1.12. The X server chooses to
992    * associate the first listed RGBA888-Z24S8 config, regardless of its
993    * sample count, with the 32-bit depth visual used for compositing.
994    *
995    * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
996    * supported.  Singlebuffer configs are not supported because no one wants
997    * them. GLX_SWAP_COPY_OML is not supported due to page flipping.
998    */
999   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
1000      if (screen->gen < 6)
1001         break;
1002
1003      __DRIconfig **new_configs;
1004      const int num_depth_stencil_bits = 2;
1005      int num_msaa_modes = 0;
1006
1007      depth_bits[0] = 0;
1008      stencil_bits[0] = 0;
1009
1010      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
1011         depth_bits[1] = 16;
1012         stencil_bits[1] = 0;
1013      } else {
1014         depth_bits[1] = 24;
1015         stencil_bits[1] = 8;
1016      }
1017
1018      if (screen->gen >= 7)
1019         num_msaa_modes = 2;
1020      else if (screen->gen == 6)
1021         num_msaa_modes = 1;
1022
1023      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
1024                                     depth_bits,
1025                                     stencil_bits,
1026                                     num_depth_stencil_bits,
1027                                     back_buffer_modes + 1, 1,
1028                                     multisample_samples,
1029                                     num_msaa_modes,
1030                                     false);
1031      configs = driConcatConfigs(configs, new_configs);
1032   }
1033
1034   if (configs == NULL) {
1035      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1036              __LINE__);
1037      return NULL;
1038   }
1039
1040   return configs;
1041}
1042
1043/**
1044 * This is the driver specific part of the createNewScreen entry point.
1045 * Called when using DRI2.
1046 *
1047 * \return the struct gl_config supported by this driver
1048 */
1049static const
1050__DRIconfig **intelInitScreen2(__DRIscreen *psp)
1051{
1052   struct intel_screen *intelScreen;
1053   unsigned int api_mask;
1054
1055   if (psp->dri2.loader->base.version <= 2 ||
1056       psp->dri2.loader->getBuffersWithFormat == NULL) {
1057      fprintf(stderr,
1058	      "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1059	      "support required\n");
1060      return false;
1061   }
1062
1063   /* Allocate the private area */
1064   intelScreen = CALLOC(sizeof *intelScreen);
1065   if (!intelScreen) {
1066      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1067      return false;
1068   }
1069   /* parse information in __driConfigOptions */
1070   driParseOptionInfo(&intelScreen->optionCache,
1071                      __driConfigOptions, __driNConfigOptions);
1072
1073   intelScreen->driScrnPriv = psp;
1074   psp->driverPrivate = (void *) intelScreen;
1075
1076   if (!intel_init_bufmgr(intelScreen))
1077       return false;
1078
1079   intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1080
1081   intelScreen->kernel_has_gen7_sol_reset =
1082      intel_get_boolean(intelScreen->driScrnPriv,
1083			I915_PARAM_HAS_GEN7_SOL_RESET);
1084
1085   if (IS_GEN7(intelScreen->deviceID)) {
1086      intelScreen->gen = 7;
1087   } else if (IS_GEN6(intelScreen->deviceID)) {
1088      intelScreen->gen = 6;
1089   } else if (IS_GEN5(intelScreen->deviceID)) {
1090      intelScreen->gen = 5;
1091   } else if (IS_965(intelScreen->deviceID)) {
1092      intelScreen->gen = 4;
1093   } else if (IS_9XX(intelScreen->deviceID)) {
1094      intelScreen->gen = 3;
1095   } else {
1096      intelScreen->gen = 2;
1097   }
1098
1099   intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1100   intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1101
1102   int has_llc = 0;
1103   bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1104				  &has_llc);
1105   if (success && has_llc)
1106      intelScreen->hw_has_llc = true;
1107   else if (!success && intelScreen->gen >= 6)
1108      intelScreen->hw_has_llc = true;
1109
1110   intel_override_separate_stencil(intelScreen);
1111
1112   api_mask = (1 << __DRI_API_OPENGL);
1113#if FEATURE_ES1
1114   api_mask |= (1 << __DRI_API_GLES);
1115#endif
1116#if FEATURE_ES2
1117   api_mask |= (1 << __DRI_API_GLES2);
1118#endif
1119
1120   if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
1121      psp->api_mask = api_mask;
1122
1123   intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1124
1125   psp->extensions = intelScreenExtensions;
1126
1127   return (const __DRIconfig**) intel_screen_make_configs(psp);
1128}
1129
1130struct intel_buffer {
1131   __DRIbuffer base;
1132   struct intel_region *region;
1133};
1134
1135static __DRIbuffer *
1136intelAllocateBuffer(__DRIscreen *screen,
1137		    unsigned attachment, unsigned format,
1138		    int width, int height)
1139{
1140   struct intel_buffer *intelBuffer;
1141   struct intel_screen *intelScreen = screen->driverPrivate;
1142
1143   assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1144          attachment == __DRI_BUFFER_BACK_LEFT);
1145
1146   intelBuffer = CALLOC(sizeof *intelBuffer);
1147   if (intelBuffer == NULL)
1148      return NULL;
1149
1150   /* The front and back buffers are color buffers, which are X tiled. */
1151   intelBuffer->region = intel_region_alloc(intelScreen,
1152                                            I915_TILING_X,
1153                                            format / 8,
1154                                            width,
1155                                            height,
1156                                            true);
1157
1158   if (intelBuffer->region == NULL) {
1159	   FREE(intelBuffer);
1160	   return NULL;
1161   }
1162
1163   intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1164
1165   intelBuffer->base.attachment = attachment;
1166   intelBuffer->base.cpp = intelBuffer->region->cpp;
1167   intelBuffer->base.pitch =
1168         intelBuffer->region->pitch * intelBuffer->region->cpp;
1169
1170   return &intelBuffer->base;
1171}
1172
1173static void
1174intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1175{
1176   struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1177
1178   intel_region_release(&intelBuffer->region);
1179   free(intelBuffer);
1180}
1181
1182
1183const struct __DriverAPIRec driDriverAPI = {
1184   .InitScreen		 = intelInitScreen2,
1185   .DestroyScreen	 = intelDestroyScreen,
1186   .CreateContext	 = intelCreateContext,
1187   .DestroyContext	 = intelDestroyContext,
1188   .CreateBuffer	 = intelCreateBuffer,
1189   .DestroyBuffer	 = intelDestroyBuffer,
1190   .MakeCurrent		 = intelMakeCurrent,
1191   .UnbindContext	 = intelUnbindContext,
1192   .AllocateBuffer       = intelAllocateBuffer,
1193   .ReleaseBuffer        = intelReleaseBuffer
1194};
1195
1196/* This is the table of extensions that the loader will dlsym() for. */
1197PUBLIC const __DRIextension *__driDriverExtensions[] = {
1198    &driCoreExtension.base,
1199    &driDRI2Extension.base,
1200    NULL
1201};
1202