1bea6b5fe5aa3138cec8d057766ae48da4aa57deeEric Anholt/**************************************************************************
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 <time.h>
30#include "main/glheader.h"
31#include "main/context.h"
32#include "main/framebuffer.h"
33#include "main/renderbuffer.h"
34#include "main/hash.h"
35#include "main/fbobject.h"
36#include "main/mfeatures.h"
37#include "main/version.h"
38#include "swrast/s_renderbuffer.h"
39
40#include "utils.h"
41#include "xmlpool.h"
42
43PUBLIC const char __driConfigOptions[] =
44   DRI_CONF_BEGIN
45   DRI_CONF_SECTION_PERFORMANCE
46      DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
47      /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
48       * DRI_CONF_BO_REUSE_ALL
49       */
50      DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
51	 DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
52	    DRI_CONF_ENUM(0, "Disable buffer object reuse")
53	    DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
54	 DRI_CONF_DESC_END
55      DRI_CONF_OPT_END
56
57      DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
58	 DRI_CONF_DESC(en, "Enable texture tiling")
59      DRI_CONF_OPT_END
60
61      DRI_CONF_OPT_BEGIN(hiz, bool, true)
62	 DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
63      DRI_CONF_OPT_END
64
65      DRI_CONF_OPT_BEGIN(early_z, bool, false)
66	 DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
67      DRI_CONF_OPT_END
68
69      DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
70	 DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
71      DRI_CONF_OPT_END
72
73   DRI_CONF_SECTION_END
74   DRI_CONF_SECTION_QUALITY
75      DRI_CONF_FORCE_S3TC_ENABLE(false)
76      DRI_CONF_ALLOW_LARGE_TEXTURES(2)
77   DRI_CONF_SECTION_END
78   DRI_CONF_SECTION_DEBUG
79     DRI_CONF_NO_RAST(false)
80     DRI_CONF_ALWAYS_FLUSH_BATCH(false)
81     DRI_CONF_ALWAYS_FLUSH_CACHE(false)
82     DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
83     DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED(false)
84
85      DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
86	 DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
87      DRI_CONF_OPT_END
88
89      DRI_CONF_OPT_BEGIN(shader_precompile, bool, true)
90	 DRI_CONF_DESC(en, "Perform code generation at shader link time.")
91      DRI_CONF_OPT_END
92   DRI_CONF_SECTION_END
93DRI_CONF_END;
94
95const GLuint __driNConfigOptions = 15;
96
97#include "intel_batchbuffer.h"
98#include "intel_buffers.h"
99#include "intel_bufmgr.h"
100#include "intel_chipset.h"
101#include "intel_fbo.h"
102#include "intel_mipmap_tree.h"
103#include "intel_screen.h"
104#include "intel_tex.h"
105#include "intel_regions.h"
106
107#include "i915_drm.h"
108
109#ifdef USE_NEW_INTERFACE
110static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
111#endif /*USE_NEW_INTERFACE */
112
113/**
114 * For debugging purposes, this returns a time in seconds.
115 */
116double
117get_time(void)
118{
119   struct timespec tp;
120
121   clock_gettime(CLOCK_MONOTONIC, &tp);
122
123   return tp.tv_sec + tp.tv_nsec / 1000000000.0;
124}
125
126void
127aub_dump_bmp(struct gl_context *ctx)
128{
129   struct gl_framebuffer *fb = ctx->DrawBuffer;
130
131   for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
132      struct intel_renderbuffer *irb =
133	 intel_renderbuffer(fb->_ColorDrawBuffers[i]);
134
135      if (irb && irb->mt) {
136	 enum aub_dump_bmp_format format;
137
138	 switch (irb->Base.Base.Format) {
139	 case MESA_FORMAT_ARGB8888:
140	 case MESA_FORMAT_XRGB8888:
141	    format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
142	    break;
143	 default:
144	    continue;
145	 }
146
147	 drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
148				       irb->draw_x,
149				       irb->draw_y,
150				       irb->Base.Base.Width,
151				       irb->Base.Base.Height,
152				       format,
153				       irb->mt->region->pitch *
154				       irb->mt->region->cpp,
155				       0);
156      }
157   }
158}
159
160static const __DRItexBufferExtension intelTexBufferExtension = {
161    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
162   intelSetTexBuffer,
163   intelSetTexBuffer2,
164};
165
166static void
167intelDRI2Flush(__DRIdrawable *drawable)
168{
169   GET_CURRENT_CONTEXT(ctx);
170   struct intel_context *intel = intel_context(ctx);
171   if (intel == NULL)
172      return;
173
174   if (intel->gen < 4)
175      INTEL_FIREVERTICES(intel);
176
177   intel_downsample_for_dri2_flush(intel, drawable);
178   intel->need_throttle = true;
179
180   if (intel->batch.used)
181      intel_batchbuffer_flush(intel);
182
183   if (INTEL_DEBUG & DEBUG_AUB) {
184      aub_dump_bmp(ctx);
185   }
186}
187
188static const struct __DRI2flushExtensionRec intelFlushExtension = {
189    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
190    intelDRI2Flush,
191    dri2InvalidateDrawable,
192};
193
194struct intel_image_format intel_image_formats[] = {
195   { __DRI_IMAGE_FOURCC_ARGB8888, __DRI_IMAGE_COMPONENTS_RGBA, 1,
196     { { 0, 0, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } },
197
198   { __DRI_IMAGE_FOURCC_XRGB8888, __DRI_IMAGE_COMPONENTS_RGB, 1,
199     { { 0, 0, 0, __DRI_IMAGE_FORMAT_XRGB8888, 4 }, } },
200
201   { __DRI_IMAGE_FOURCC_YUV410, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
202     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
203       { 1, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 },
204       { 2, 2, 2, __DRI_IMAGE_FORMAT_R8, 1 } } },
205
206   { __DRI_IMAGE_FOURCC_YUV411, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
207     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
208       { 1, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 },
209       { 2, 2, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
210
211   { __DRI_IMAGE_FOURCC_YUV420, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
212     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
213       { 1, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 },
214       { 2, 1, 1, __DRI_IMAGE_FORMAT_R8, 1 } } },
215
216   { __DRI_IMAGE_FOURCC_YUV422, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
217     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
218       { 1, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 },
219       { 2, 1, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
220
221   { __DRI_IMAGE_FOURCC_YUV444, __DRI_IMAGE_COMPONENTS_Y_U_V, 3,
222     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
223       { 1, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
224       { 2, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 } } },
225
226   { __DRI_IMAGE_FOURCC_NV12, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
227     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
228       { 1, 1, 1, __DRI_IMAGE_FORMAT_GR88, 2 } } },
229
230   { __DRI_IMAGE_FOURCC_NV16, __DRI_IMAGE_COMPONENTS_Y_UV, 2,
231     { { 0, 0, 0, __DRI_IMAGE_FORMAT_R8, 1 },
232       { 1, 1, 0, __DRI_IMAGE_FORMAT_GR88, 2 } } },
233
234   /* For YUYV buffers, we set up two overlapping DRI images and treat
235    * them as planar buffers in the compositors.  Plane 0 is GR88 and
236    * samples YU or YV pairs and places Y into the R component, while
237    * plane 1 is ARGB and samples YUYV clusters and places pairs and
238    * places U into the G component and V into A.  This lets the
239    * texture sampler interpolate the Y components correctly when
240    * sampling from plane 0, and interpolate U and V correctly when
241    * sampling from plane 1. */
242   { __DRI_IMAGE_FOURCC_YUYV, __DRI_IMAGE_COMPONENTS_Y_XUXV, 2,
243     { { 0, 0, 0, __DRI_IMAGE_FORMAT_GR88, 2 },
244       { 0, 1, 0, __DRI_IMAGE_FORMAT_ARGB8888, 4 } } }
245};
246
247static __DRIimage *
248intel_allocate_image(int dri_format, void *loaderPrivate)
249{
250    __DRIimage *image;
251
252    image = CALLOC(sizeof *image);
253    if (image == NULL)
254	return NULL;
255
256    image->dri_format = dri_format;
257    image->offset = 0;
258
259    switch (dri_format) {
260    case __DRI_IMAGE_FORMAT_RGB565:
261       image->format = MESA_FORMAT_RGB565;
262       break;
263    case __DRI_IMAGE_FORMAT_XRGB8888:
264       image->format = MESA_FORMAT_XRGB8888;
265       break;
266    case __DRI_IMAGE_FORMAT_ARGB8888:
267       image->format = MESA_FORMAT_ARGB8888;
268       break;
269    case __DRI_IMAGE_FORMAT_ABGR8888:
270       image->format = MESA_FORMAT_RGBA8888_REV;
271       break;
272    case __DRI_IMAGE_FORMAT_XBGR8888:
273       image->format = MESA_FORMAT_RGBX8888_REV;
274       break;
275    case __DRI_IMAGE_FORMAT_R8:
276       image->format = MESA_FORMAT_R8;
277       break;
278    case __DRI_IMAGE_FORMAT_GR88:
279       image->format = MESA_FORMAT_GR88;
280       break;
281    case __DRI_IMAGE_FORMAT_NONE:
282       image->format = MESA_FORMAT_NONE;
283       break;
284    default:
285       free(image);
286       return NULL;
287    }
288
289    image->internal_format = _mesa_get_format_base_format(image->format);
290    image->data = loaderPrivate;
291
292    return image;
293}
294
295static __DRIimage *
296intel_create_image_from_name(__DRIscreen *screen,
297			     int width, int height, int format,
298			     int name, int pitch, void *loaderPrivate)
299{
300    struct intel_screen *intelScreen = screen->driverPrivate;
301    __DRIimage *image;
302    int cpp;
303
304    image = intel_allocate_image(format, loaderPrivate);
305    if (image->format == MESA_FORMAT_NONE)
306       cpp = 1;
307    else
308       cpp = _mesa_get_format_bytes(image->format);
309    image->region = intel_region_alloc_for_handle(intelScreen,
310						  cpp, width, height,
311						  pitch, name, "image");
312    if (image->region == NULL) {
313       FREE(image);
314       return NULL;
315    }
316
317    return image;
318}
319
320static __DRIimage *
321intel_create_image_from_renderbuffer(__DRIcontext *context,
322				     int renderbuffer, void *loaderPrivate)
323{
324   __DRIimage *image;
325   struct intel_context *intel = context->driverPrivate;
326   struct gl_renderbuffer *rb;
327   struct intel_renderbuffer *irb;
328
329   rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
330   if (!rb) {
331      _mesa_error(&intel->ctx,
332		  GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
333      return NULL;
334   }
335
336   irb = intel_renderbuffer(rb);
337   image = CALLOC(sizeof *image);
338   if (image == NULL)
339      return NULL;
340
341   image->internal_format = rb->InternalFormat;
342   image->format = rb->Format;
343   image->offset = 0;
344   image->data = loaderPrivate;
345   intel_region_reference(&image->region, irb->mt->region);
346
347   switch (image->format) {
348   case MESA_FORMAT_RGB565:
349      image->dri_format = __DRI_IMAGE_FORMAT_RGB565;
350      break;
351   case MESA_FORMAT_XRGB8888:
352      image->dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
353      break;
354   case MESA_FORMAT_ARGB8888:
355      image->dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
356      break;
357   case MESA_FORMAT_RGBA8888_REV:
358      image->dri_format = __DRI_IMAGE_FORMAT_ABGR8888;
359      break;
360   case MESA_FORMAT_R8:
361      image->dri_format = __DRI_IMAGE_FORMAT_R8;
362      break;
363   case MESA_FORMAT_RG88:
364      image->dri_format = __DRI_IMAGE_FORMAT_GR88;
365      break;
366   }
367
368   return image;
369}
370
371static void
372intel_destroy_image(__DRIimage *image)
373{
374    intel_region_release(&image->region);
375    FREE(image);
376}
377
378static __DRIimage *
379intel_create_image(__DRIscreen *screen,
380		   int width, int height, int format,
381		   unsigned int use,
382		   void *loaderPrivate)
383{
384   __DRIimage *image;
385   struct intel_screen *intelScreen = screen->driverPrivate;
386   uint32_t tiling;
387   int cpp;
388
389   tiling = I915_TILING_X;
390   if (use & __DRI_IMAGE_USE_CURSOR) {
391      if (width != 64 || height != 64)
392	 return NULL;
393      tiling = I915_TILING_NONE;
394   }
395
396   image = intel_allocate_image(format, loaderPrivate);
397   cpp = _mesa_get_format_bytes(image->format);
398   image->region =
399      intel_region_alloc(intelScreen, tiling, cpp, width, height, true);
400   if (image->region == NULL) {
401      FREE(image);
402      return NULL;
403   }
404
405   return image;
406}
407
408static GLboolean
409intel_query_image(__DRIimage *image, int attrib, int *value)
410{
411   switch (attrib) {
412   case __DRI_IMAGE_ATTRIB_STRIDE:
413      *value = image->region->pitch * image->region->cpp;
414      return true;
415   case __DRI_IMAGE_ATTRIB_HANDLE:
416      *value = image->region->bo->handle;
417      return true;
418   case __DRI_IMAGE_ATTRIB_NAME:
419      return intel_region_flink(image->region, (uint32_t *) value);
420   case __DRI_IMAGE_ATTRIB_FORMAT:
421      *value = image->dri_format;
422      return true;
423   case __DRI_IMAGE_ATTRIB_WIDTH:
424      *value = image->region->width;
425      return true;
426   case __DRI_IMAGE_ATTRIB_HEIGHT:
427      *value = image->region->height;
428      return true;
429   case __DRI_IMAGE_ATTRIB_COMPONENTS:
430      if (image->planar_format == NULL)
431         return false;
432      *value = image->planar_format->components;
433      return true;
434  default:
435      return false;
436   }
437}
438
439static __DRIimage *
440intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
441{
442   __DRIimage *image;
443
444   image = CALLOC(sizeof *image);
445   if (image == NULL)
446      return NULL;
447
448   intel_region_reference(&image->region, orig_image->region);
449   if (image->region == NULL) {
450      FREE(image);
451      return NULL;
452   }
453
454   image->internal_format = orig_image->internal_format;
455   image->planar_format   = orig_image->planar_format;
456   image->dri_format      = orig_image->dri_format;
457   image->format          = orig_image->format;
458   image->offset          = orig_image->offset;
459   image->data            = loaderPrivate;
460
461   memcpy(image->strides, orig_image->strides, sizeof(image->strides));
462   memcpy(image->offsets, orig_image->offsets, sizeof(image->offsets));
463
464   return image;
465}
466
467static GLboolean
468intel_validate_usage(__DRIimage *image, unsigned int use)
469{
470   if (use & __DRI_IMAGE_USE_CURSOR) {
471      if (image->region->width != 64 || image->region->height != 64)
472	 return GL_FALSE;
473   }
474
475   return GL_TRUE;
476}
477
478static __DRIimage *
479intel_create_image_from_names(__DRIscreen *screen,
480                              int width, int height, int fourcc,
481                              int *names, int num_names,
482                              int *strides, int *offsets,
483                              void *loaderPrivate)
484{
485    struct intel_image_format *f = NULL;
486    __DRIimage *image;
487    int i, index;
488
489    if (screen == NULL || names == NULL || num_names != 1)
490        return NULL;
491
492    for (i = 0; i < ARRAY_SIZE(intel_image_formats); i++) {
493        if (intel_image_formats[i].fourcc == fourcc) {
494           f = &intel_image_formats[i];
495        }
496    }
497
498    if (f == NULL)
499        return NULL;
500
501    image = intel_create_image_from_name(screen, width, height,
502                                         __DRI_IMAGE_FORMAT_NONE,
503                                         names[0], strides[0],
504                                         loaderPrivate);
505
506    if (image == NULL)
507        return NULL;
508
509    image->planar_format = f;
510    for (i = 0; i < f->nplanes; i++) {
511        index = f->planes[i].buffer_index;
512        image->offsets[index] = offsets[index];
513        image->strides[index] = strides[index];
514    }
515
516    return image;
517}
518
519static __DRIimage *
520intel_from_planar(__DRIimage *parent, int plane, void *loaderPrivate)
521{
522    int width, height, offset, stride, dri_format, cpp, index, pitch;
523    struct intel_image_format *f;
524    uint32_t mask_x, mask_y;
525    __DRIimage *image;
526
527    if (parent == NULL || parent->planar_format == NULL)
528        return NULL;
529
530    f = parent->planar_format;
531
532    if (plane >= f->nplanes)
533        return NULL;
534
535    width = parent->region->width >> f->planes[plane].width_shift;
536    height = parent->region->height >> f->planes[plane].height_shift;
537    dri_format = f->planes[plane].dri_format;
538    index = f->planes[plane].buffer_index;
539    offset = parent->offsets[index];
540    stride = parent->strides[index];
541
542    image = intel_allocate_image(dri_format, loaderPrivate);
543    cpp = _mesa_get_format_bytes(image->format); /* safe since no none format */
544    pitch = stride / cpp;
545    if (offset + height * cpp * pitch > parent->region->bo->size) {
546       _mesa_warning(NULL, "intel_create_sub_image: subimage out of bounds");
547       FREE(image);
548       return NULL;
549    }
550
551    image->region = calloc(sizeof(*image->region), 1);
552    if (image->region == NULL) {
553       FREE(image);
554       return NULL;
555    }
556
557    image->region->cpp = _mesa_get_format_bytes(image->format);
558    image->region->width = width;
559    image->region->height = height;
560    image->region->pitch = pitch;
561    image->region->refcount = 1;
562    image->region->bo = parent->region->bo;
563    drm_intel_bo_reference(image->region->bo);
564    image->region->tiling = parent->region->tiling;
565    image->region->screen = parent->region->screen;
566    image->offset = offset;
567
568    intel_region_get_tile_masks(image->region, &mask_x, &mask_y, false);
569    if (offset & mask_x)
570       _mesa_warning(NULL,
571                     "intel_create_sub_image: offset not on tile boundary");
572
573    return image;
574}
575
576static struct __DRIimageExtensionRec intelImageExtension = {
577    { __DRI_IMAGE, 5 },
578    intel_create_image_from_name,
579    intel_create_image_from_renderbuffer,
580    intel_destroy_image,
581    intel_create_image,
582    intel_query_image,
583    intel_dup_image,
584    intel_validate_usage,
585    intel_create_image_from_names,
586    intel_from_planar
587};
588
589static const __DRIextension *intelScreenExtensions[] = {
590    &intelTexBufferExtension.base,
591    &intelFlushExtension.base,
592    &intelImageExtension.base,
593    &dri2ConfigQueryExtension.base,
594    NULL
595};
596
597static bool
598intel_get_param(__DRIscreen *psp, int param, int *value)
599{
600   int ret;
601   struct drm_i915_getparam gp;
602
603   memset(&gp, 0, sizeof(gp));
604   gp.param = param;
605   gp.value = value;
606
607   ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
608   if (ret) {
609      if (ret != -EINVAL)
610	 _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
611      return false;
612   }
613
614   return true;
615}
616
617static bool
618intel_get_boolean(__DRIscreen *psp, int param)
619{
620   int value = 0;
621   return intel_get_param(psp, param, &value) && value;
622}
623
624static void
625nop_callback(GLuint key, void *data, void *userData)
626{
627}
628
629static void
630intelDestroyScreen(__DRIscreen * sPriv)
631{
632   struct intel_screen *intelScreen = sPriv->driverPrivate;
633
634   dri_bufmgr_destroy(intelScreen->bufmgr);
635   driDestroyOptionInfo(&intelScreen->optionCache);
636
637   /* Some regions may still have references to them at this point, so
638    * flush the hash table to prevent _mesa_DeleteHashTable() from
639    * complaining about the hash not being empty; */
640   _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
641   _mesa_DeleteHashTable(intelScreen->named_regions);
642
643   FREE(intelScreen);
644   sPriv->driverPrivate = NULL;
645}
646
647
648/**
649 * This is called when we need to set up GL rendering to a new X window.
650 */
651static GLboolean
652intelCreateBuffer(__DRIscreen * driScrnPriv,
653                  __DRIdrawable * driDrawPriv,
654                  const struct gl_config * mesaVis, GLboolean isPixmap)
655{
656   struct intel_renderbuffer *rb;
657   struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
658   gl_format rgbFormat;
659   unsigned num_samples = intel_quantize_num_samples(screen, mesaVis->samples);
660   struct gl_framebuffer *fb;
661
662   if (isPixmap)
663      return false;
664
665   fb = CALLOC_STRUCT(gl_framebuffer);
666   if (!fb)
667      return false;
668
669   _mesa_initialize_window_framebuffer(fb, mesaVis);
670
671   if (mesaVis->redBits == 5)
672      rgbFormat = MESA_FORMAT_RGB565;
673   else if (mesaVis->alphaBits == 0)
674      rgbFormat = MESA_FORMAT_XRGB8888;
675   else
676      rgbFormat = MESA_FORMAT_ARGB8888;
677
678   /* setup the hardware-based renderbuffers */
679   rb = intel_create_renderbuffer(rgbFormat, num_samples);
680   _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
681
682   if (mesaVis->doubleBufferMode) {
683      rb = intel_create_renderbuffer(rgbFormat, num_samples);
684      _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
685   }
686
687   /*
688    * Assert here that the gl_config has an expected depth/stencil bit
689    * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
690    * which constructs the advertised configs.)
691    */
692   if (mesaVis->depthBits == 24) {
693      assert(mesaVis->stencilBits == 8);
694
695      if (screen->hw_has_separate_stencil) {
696         rb = intel_create_private_renderbuffer(MESA_FORMAT_X8_Z24,
697                                                num_samples);
698         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
699         rb = intel_create_private_renderbuffer(MESA_FORMAT_S8,
700                                                num_samples);
701         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
702      } else {
703         /*
704          * Use combined depth/stencil. Note that the renderbuffer is
705          * attached to two attachment points.
706          */
707         rb = intel_create_private_renderbuffer(MESA_FORMAT_S8_Z24,
708                                                num_samples);
709         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
710         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
711      }
712   }
713   else if (mesaVis->depthBits == 16) {
714      assert(mesaVis->stencilBits == 0);
715      rb = intel_create_private_renderbuffer(MESA_FORMAT_Z16,
716                                             num_samples);
717      _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
718   }
719   else {
720      assert(mesaVis->depthBits == 0);
721      assert(mesaVis->stencilBits == 0);
722   }
723
724   /* now add any/all software-based renderbuffers we may need */
725   _swrast_add_soft_renderbuffers(fb,
726                                  false, /* never sw color */
727                                  false, /* never sw depth */
728                                  false, /* never sw stencil */
729                                  mesaVis->accumRedBits > 0,
730                                  false, /* never sw alpha */
731                                  false  /* never sw aux */ );
732   driDrawPriv->driverPrivate = fb;
733
734   return true;
735}
736
737static void
738intelDestroyBuffer(__DRIdrawable * driDrawPriv)
739{
740    struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
741
742    _mesa_reference_framebuffer(&fb, NULL);
743}
744
745/* There are probably better ways to do this, such as an
746 * init-designated function to register chipids and createcontext
747 * functions.
748 */
749extern bool
750i830CreateContext(const struct gl_config *mesaVis,
751		  __DRIcontext *driContextPriv,
752		  void *sharedContextPrivate);
753
754extern bool
755i915CreateContext(int api,
756		  const struct gl_config *mesaVis,
757		  __DRIcontext *driContextPriv,
758                  unsigned major_version,
759                  unsigned minor_version,
760                  unsigned *error,
761		  void *sharedContextPrivate);
762extern bool
763brwCreateContext(int api,
764	         const struct gl_config *mesaVis,
765	         __DRIcontext *driContextPriv,
766                 unsigned major_version,
767                 unsigned minor_version,
768                 uint32_t flags,
769                 unsigned *error,
770		 void *sharedContextPrivate);
771
772static GLboolean
773intelCreateContext(gl_api api,
774		   const struct gl_config * mesaVis,
775                   __DRIcontext * driContextPriv,
776		   unsigned major_version,
777		   unsigned minor_version,
778		   uint32_t flags,
779		   unsigned *error,
780                   void *sharedContextPrivate)
781{
782   __DRIscreen *sPriv = driContextPriv->driScreenPriv;
783   struct intel_screen *intelScreen = sPriv->driverPrivate;
784   bool success = false;
785
786#ifdef I915
787   if (IS_9XX(intelScreen->deviceID)) {
788      success = i915CreateContext(api, mesaVis, driContextPriv,
789                                  major_version, minor_version, error,
790                                  sharedContextPrivate);
791   } else {
792      switch (api) {
793      case API_OPENGL:
794         if (major_version > 1 || minor_version > 3) {
795            *error = __DRI_CTX_ERROR_BAD_VERSION;
796            success = false;
797         }
798         break;
799      case API_OPENGLES:
800         break;
801      default:
802         *error = __DRI_CTX_ERROR_BAD_API;
803         success = false;
804      }
805
806      if (success) {
807         intelScreen->no_vbo = true;
808         success = i830CreateContext(mesaVis, driContextPriv,
809                                     sharedContextPrivate);
810         if (!success)
811            *error = __DRI_CTX_ERROR_NO_MEMORY;
812      }
813   }
814#else
815   success = brwCreateContext(api, mesaVis,
816                              driContextPriv,
817                              major_version, minor_version, flags,
818                              error, sharedContextPrivate);
819#endif
820
821   if (success)
822      return true;
823
824   if (driContextPriv->driverPrivate != NULL)
825      intelDestroyContext(driContextPriv);
826
827   return false;
828}
829
830static bool
831intel_init_bufmgr(struct intel_screen *intelScreen)
832{
833   __DRIscreen *spriv = intelScreen->driScrnPriv;
834   int num_fences = 0;
835
836   intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
837
838   intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
839   if (intelScreen->bufmgr == NULL) {
840      fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
841	      __func__, __LINE__);
842      return false;
843   }
844
845   if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
846       num_fences == 0) {
847      fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
848      return false;
849   }
850
851   drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
852
853   intelScreen->named_regions = _mesa_NewHashTable();
854
855   intelScreen->relaxed_relocations = 0;
856   intelScreen->relaxed_relocations |=
857      intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
858
859   return true;
860}
861
862/**
863 * Override intel_screen.hw_has_separate_stencil with environment variable
864 * INTEL_SEPARATE_STENCIL.
865 *
866 * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
867 * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
868 * is ignored.
869 */
870static void
871intel_override_separate_stencil(struct intel_screen *screen)
872{
873   const char *s = getenv("INTEL_SEPARATE_STENCIL");
874   if (!s) {
875      return;
876   } else if (!strncmp("0", s, 2)) {
877      screen->hw_has_separate_stencil = false;
878   } else if (!strncmp("1", s, 2)) {
879      screen->hw_has_separate_stencil = true;
880   } else {
881      fprintf(stderr,
882	      "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
883	      "invalid value and is ignored", s);
884   }
885}
886
887static bool
888intel_detect_swizzling(struct intel_screen *screen)
889{
890   drm_intel_bo *buffer;
891   unsigned long flags = 0;
892   unsigned long aligned_pitch;
893   uint32_t tiling = I915_TILING_X;
894   uint32_t swizzle_mode = 0;
895
896   buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
897				     64, 64, 4,
898				     &tiling, &aligned_pitch, flags);
899   if (buffer == NULL)
900      return false;
901
902   drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
903   drm_intel_bo_unreference(buffer);
904
905   if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
906      return false;
907   else
908      return true;
909}
910
911static __DRIconfig**
912intel_screen_make_configs(__DRIscreen *dri_screen)
913{
914   static const GLenum back_buffer_modes[] = {
915       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
916   };
917
918   static const uint8_t singlesample_samples[1] = {0};
919   static const uint8_t multisample_samples[2]  = {4, 8};
920
921   struct intel_screen *screen = dri_screen->driverPrivate;
922   GLenum fb_format[3];
923   GLenum fb_type[3];
924   uint8_t depth_bits[4], stencil_bits[4];
925   __DRIconfig **configs = NULL;
926
927   fb_format[0] = GL_RGB;
928   fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
929
930   fb_format[1] = GL_BGR;
931   fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
932
933   fb_format[2] = GL_BGRA;
934   fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
935
936   /* Generate singlesample configs without accumulation buffer. */
937   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
938      __DRIconfig **new_configs;
939      const int num_depth_stencil_bits = 2;
940
941      /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
942       * buffer that has a different number of bits per pixel than the color
943       * buffer.  This isn't yet supported here.
944       */
945      depth_bits[0] = 0;
946      stencil_bits[0] = 0;
947
948      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
949         depth_bits[1] = 16;
950         stencil_bits[1] = 0;
951      } else {
952         depth_bits[1] = 24;
953         stencil_bits[1] = 8;
954      }
955
956      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
957                                     depth_bits,
958                                     stencil_bits,
959                                     num_depth_stencil_bits,
960                                     back_buffer_modes,
961                                     ARRAY_SIZE(back_buffer_modes),
962                                     singlesample_samples, 1,
963                                     false);
964      configs = driConcatConfigs(configs, new_configs);
965   }
966
967   /* Generate the minimum possible set of configs that include an
968    * accumulation buffer.
969    */
970   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
971      __DRIconfig **new_configs;
972
973      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
974         depth_bits[0] = 16;
975         stencil_bits[0] = 0;
976      } else {
977         depth_bits[0] = 24;
978         stencil_bits[0] = 8;
979      }
980
981      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
982                                     depth_bits, stencil_bits, 1,
983                                     back_buffer_modes + 1, 1,
984                                     singlesample_samples, 1,
985                                     true);
986      configs = driConcatConfigs(configs, new_configs);
987   }
988
989   /* Generate multisample configs.
990    *
991    * This loop breaks early, and hence is a no-op, on gen < 6.
992    *
993    * Multisample configs must follow the singlesample configs in order to
994    * work around an X server bug present in 1.12. The X server chooses to
995    * associate the first listed RGBA888-Z24S8 config, regardless of its
996    * sample count, with the 32-bit depth visual used for compositing.
997    *
998    * Only doublebuffer configs with GLX_SWAP_UNDEFINED_OML behavior are
999    * supported.  Singlebuffer configs are not supported because no one wants
1000    * them. GLX_SWAP_COPY_OML is not supported due to page flipping.
1001    */
1002   for (int i = 0; i < ARRAY_SIZE(fb_format); i++) {
1003      if (screen->gen < 6)
1004         break;
1005
1006      __DRIconfig **new_configs;
1007      const int num_depth_stencil_bits = 2;
1008      int num_msaa_modes = 0;
1009
1010      depth_bits[0] = 0;
1011      stencil_bits[0] = 0;
1012
1013      if (fb_type[i] == GL_UNSIGNED_SHORT_5_6_5) {
1014         depth_bits[1] = 16;
1015         stencil_bits[1] = 0;
1016      } else {
1017         depth_bits[1] = 24;
1018         stencil_bits[1] = 8;
1019      }
1020
1021      if (screen->gen >= 7)
1022         num_msaa_modes = 2;
1023      else if (screen->gen == 6)
1024         num_msaa_modes = 1;
1025
1026      new_configs = driCreateConfigs(fb_format[i], fb_type[i],
1027                                     depth_bits,
1028                                     stencil_bits,
1029                                     num_depth_stencil_bits,
1030                                     back_buffer_modes + 1, 1,
1031                                     multisample_samples,
1032                                     num_msaa_modes,
1033                                     false);
1034      configs = driConcatConfigs(configs, new_configs);
1035   }
1036
1037   if (configs == NULL) {
1038      fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
1039              __LINE__);
1040      return NULL;
1041   }
1042
1043   return configs;
1044}
1045
1046/**
1047 * This is the driver specific part of the createNewScreen entry point.
1048 * Called when using DRI2.
1049 *
1050 * \return the struct gl_config supported by this driver
1051 */
1052static const
1053__DRIconfig **intelInitScreen2(__DRIscreen *psp)
1054{
1055   struct intel_screen *intelScreen;
1056   unsigned int api_mask;
1057
1058   if (psp->dri2.loader->base.version <= 2 ||
1059       psp->dri2.loader->getBuffersWithFormat == NULL) {
1060      fprintf(stderr,
1061	      "\nERROR!  DRI2 loader with getBuffersWithFormat() "
1062	      "support required\n");
1063      return false;
1064   }
1065
1066   /* Allocate the private area */
1067   intelScreen = CALLOC(sizeof *intelScreen);
1068   if (!intelScreen) {
1069      fprintf(stderr, "\nERROR!  Allocating private area failed\n");
1070      return false;
1071   }
1072   /* parse information in __driConfigOptions */
1073   driParseOptionInfo(&intelScreen->optionCache,
1074                      __driConfigOptions, __driNConfigOptions);
1075
1076   intelScreen->driScrnPriv = psp;
1077   psp->driverPrivate = (void *) intelScreen;
1078
1079   if (!intel_init_bufmgr(intelScreen))
1080       return false;
1081
1082   intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
1083
1084   intelScreen->kernel_has_gen7_sol_reset =
1085      intel_get_boolean(intelScreen->driScrnPriv,
1086			I915_PARAM_HAS_GEN7_SOL_RESET);
1087
1088   if (IS_GEN7(intelScreen->deviceID)) {
1089      intelScreen->gen = 7;
1090   } else if (IS_GEN6(intelScreen->deviceID)) {
1091      intelScreen->gen = 6;
1092   } else if (IS_GEN5(intelScreen->deviceID)) {
1093      intelScreen->gen = 5;
1094   } else if (IS_965(intelScreen->deviceID)) {
1095      intelScreen->gen = 4;
1096   } else if (IS_9XX(intelScreen->deviceID)) {
1097      intelScreen->gen = 3;
1098   } else {
1099      intelScreen->gen = 2;
1100   }
1101
1102   intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
1103   intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
1104
1105   int has_llc = 0;
1106   bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
1107				  &has_llc);
1108   if (success && has_llc)
1109      intelScreen->hw_has_llc = true;
1110   else if (!success && intelScreen->gen >= 6)
1111      intelScreen->hw_has_llc = true;
1112
1113   intel_override_separate_stencil(intelScreen);
1114
1115   api_mask = (1 << __DRI_API_OPENGL);
1116#if FEATURE_ES1
1117   api_mask |= (1 << __DRI_API_GLES);
1118#endif
1119#if FEATURE_ES2
1120   api_mask |= (1 << __DRI_API_GLES2);
1121#endif
1122
1123   if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
1124      psp->api_mask = api_mask;
1125
1126   intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
1127
1128   psp->extensions = intelScreenExtensions;
1129
1130   return (const __DRIconfig**) intel_screen_make_configs(psp);
1131}
1132
1133struct intel_buffer {
1134   __DRIbuffer base;
1135   struct intel_region *region;
1136};
1137
1138static __DRIbuffer *
1139intelAllocateBuffer(__DRIscreen *screen,
1140		    unsigned attachment, unsigned format,
1141		    int width, int height)
1142{
1143   struct intel_buffer *intelBuffer;
1144   struct intel_screen *intelScreen = screen->driverPrivate;
1145
1146   assert(attachment == __DRI_BUFFER_FRONT_LEFT ||
1147          attachment == __DRI_BUFFER_BACK_LEFT);
1148
1149   intelBuffer = CALLOC(sizeof *intelBuffer);
1150   if (intelBuffer == NULL)
1151      return NULL;
1152
1153   /* The front and back buffers are color buffers, which are X tiled. */
1154   intelBuffer->region = intel_region_alloc(intelScreen,
1155                                            I915_TILING_X,
1156                                            format / 8,
1157                                            width,
1158                                            height,
1159                                            true);
1160
1161   if (intelBuffer->region == NULL) {
1162	   FREE(intelBuffer);
1163	   return NULL;
1164   }
1165
1166   intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
1167
1168   intelBuffer->base.attachment = attachment;
1169   intelBuffer->base.cpp = intelBuffer->region->cpp;
1170   intelBuffer->base.pitch =
1171         intelBuffer->region->pitch * intelBuffer->region->cpp;
1172
1173   return &intelBuffer->base;
1174}
1175
1176static void
1177intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1178{
1179   struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1180
1181   intel_region_release(&intelBuffer->region);
1182   free(intelBuffer);
1183}
1184
1185
1186const struct __DriverAPIRec driDriverAPI = {
1187   .InitScreen		 = intelInitScreen2,
1188   .DestroyScreen	 = intelDestroyScreen,
1189   .CreateContext	 = intelCreateContext,
1190   .DestroyContext	 = intelDestroyContext,
1191   .CreateBuffer	 = intelCreateBuffer,
1192   .DestroyBuffer	 = intelDestroyBuffer,
1193   .MakeCurrent		 = intelMakeCurrent,
1194   .UnbindContext	 = intelUnbindContext,
1195   .AllocateBuffer       = intelAllocateBuffer,
1196   .ReleaseBuffer        = intelReleaseBuffer
1197};
1198
1199/* This is the table of extensions that the loader will dlsym() for. */
1200PUBLIC const __DRIextension *__driDriverExtensions[] = {
1201    &driCoreExtension.base,
1202    &driDRI2Extension.base,
1203    NULL
1204};
1205