sp_screen.c revision 01e04c3f 
1/**************************************************************************
2 *
3 * Copyright 2008 VMware, Inc.
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 VMWARE 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 "util/u_memory.h"
30#include "util/u_format.h"
31#include "util/u_format_s3tc.h"
32#include "util/u_screen.h"
33#include "util/u_video.h"
34#include "util/os_misc.h"
35#include "util/os_time.h"
36#include "pipe/p_defines.h"
37#include "pipe/p_screen.h"
38#include "draw/draw_context.h"
39
40#include "state_tracker/sw_winsys.h"
41#include "tgsi/tgsi_exec.h"
42
43#include "sp_texture.h"
44#include "sp_screen.h"
45#include "sp_context.h"
46#include "sp_fence.h"
47#include "sp_public.h"
48
49DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
50
51static const char *
52softpipe_get_vendor(struct pipe_screen *screen)
53{
54   return "VMware, Inc.";
55}
56
57
58static const char *
59softpipe_get_name(struct pipe_screen *screen)
60{
61   return "softpipe";
62}
63
64
65static int
66softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
67{
68   switch (param) {
69   case PIPE_CAP_NPOT_TEXTURES:
70   case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
71   case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
72      return 1;
73   case PIPE_CAP_SM3:
74      return 1;
75   case PIPE_CAP_ANISOTROPIC_FILTER:
76      return 1;
77   case PIPE_CAP_POINT_SPRITE:
78      return 1;
79   case PIPE_CAP_MAX_RENDER_TARGETS:
80      return PIPE_MAX_COLOR_BUFS;
81   case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
82      return 1;
83   case PIPE_CAP_OCCLUSION_QUERY:
84      return 1;
85   case PIPE_CAP_QUERY_TIME_ELAPSED:
86      return 1;
87   case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
88      return 1;
89   case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
90   case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
91      return 1;
92   case PIPE_CAP_TEXTURE_SWIZZLE:
93      return 1;
94   case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
95   case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
96      return 0;
97   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
98      return SP_MAX_TEXTURE_2D_LEVELS;
99   case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
100      return SP_MAX_TEXTURE_3D_LEVELS;
101   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
102      return SP_MAX_TEXTURE_CUBE_LEVELS;
103   case PIPE_CAP_BLEND_EQUATION_SEPARATE:
104      return 1;
105   case PIPE_CAP_INDEP_BLEND_ENABLE:
106      return 1;
107   case PIPE_CAP_INDEP_BLEND_FUNC:
108      return 1;
109   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
110   case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
111   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
112   case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
113      return 1;
114   case PIPE_CAP_DEPTH_CLIP_DISABLE:
115      return 1;
116   case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
117      return PIPE_MAX_SO_BUFFERS;
118   case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
119   case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
120      return 16*4;
121   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
122   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
123      return 1024;
124   case PIPE_CAP_MAX_VERTEX_STREAMS:
125      return 1;
126   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
127      return 2048;
128   case PIPE_CAP_PRIMITIVE_RESTART:
129      return 1;
130   case PIPE_CAP_SHADER_STENCIL_EXPORT:
131      return 1;
132   case PIPE_CAP_TGSI_INSTANCEID:
133   case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
134   case PIPE_CAP_START_INSTANCE:
135      return 1;
136   case PIPE_CAP_SEAMLESS_CUBE_MAP:
137   case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
138      return 1;
139   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
140      return 256; /* for GL3 */
141   case PIPE_CAP_MIN_TEXEL_OFFSET:
142      return -8;
143   case PIPE_CAP_MAX_TEXEL_OFFSET:
144      return 7;
145   case PIPE_CAP_CONDITIONAL_RENDER:
146      return 1;
147   case PIPE_CAP_TEXTURE_BARRIER:
148   case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
149      return 0;
150   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
151   case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
152   case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
153      return 1;
154   case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
155      return 0;
156   case PIPE_CAP_GLSL_FEATURE_LEVEL:
157      return 330;
158   case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
159      return 140;
160   case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
161   case PIPE_CAP_TGSI_TEX_TXF_LZ:
162      return 0;
163   case PIPE_CAP_COMPUTE:
164      return 1;
165   case PIPE_CAP_USER_VERTEX_BUFFERS:
166   case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
167   case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
168   case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
169   case PIPE_CAP_DOUBLES:
170   case PIPE_CAP_INT64:
171   case PIPE_CAP_INT64_DIVMOD:
172      return 1;
173   case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
174      return 16;
175   case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
176   case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
177   case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
178   case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
179   case PIPE_CAP_TEXTURE_MULTISAMPLE:
180      return 0;
181   case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
182      return 64;
183   case PIPE_CAP_QUERY_TIMESTAMP:
184   case PIPE_CAP_CUBE_MAP_ARRAY:
185      return 1;
186   case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
187      return 1;
188   case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
189      return 0;
190   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
191      return 65536;
192   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
193      return 0;
194   case PIPE_CAP_TGSI_TEXCOORD:
195   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
196      return 0;
197   case PIPE_CAP_MAX_VIEWPORTS:
198      return PIPE_MAX_VIEWPORTS;
199   case PIPE_CAP_ENDIANNESS:
200      return PIPE_ENDIAN_NATIVE;
201   case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
202      return 4;
203   case PIPE_CAP_TEXTURE_GATHER_SM5:
204   case PIPE_CAP_TEXTURE_QUERY_LOD:
205      return 1;
206   case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
207   case PIPE_CAP_SAMPLE_SHADING:
208   case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
209      return 0;
210   case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
211      return 1;
212   case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
213      return 0;
214   case PIPE_CAP_SAMPLER_VIEW_TARGET:
215      return 1;
216   case PIPE_CAP_FAKE_SW_MSAA:
217      return 1;
218   case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
219      return -32;
220   case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
221      return 31;
222   case PIPE_CAP_DRAW_INDIRECT:
223      return 1;
224   case PIPE_CAP_QUERY_SO_OVERFLOW:
225      return 1;
226
227   case PIPE_CAP_VENDOR_ID:
228      return 0xFFFFFFFF;
229   case PIPE_CAP_DEVICE_ID:
230      return 0xFFFFFFFF;
231   case PIPE_CAP_ACCELERATED:
232      return 0;
233   case PIPE_CAP_VIDEO_MEMORY: {
234      /* XXX: Do we want to return the full amount fo system memory ? */
235      uint64_t system_memory;
236
237      if (!os_get_total_physical_memory(&system_memory))
238         return 0;
239
240      if (sizeof(void *) == 4)
241         /* Cap to 2 GB on 32 bits system. We do this because softpipe does
242          * eat application memory, which is quite limited on 32 bits. App
243          * shouldn't expect too much available memory. */
244         system_memory = MIN2(system_memory, 2048 << 20);
245
246      return (int)(system_memory >> 20);
247   }
248   case PIPE_CAP_UMA:
249      return 0;
250   case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
251      return 1;
252   case PIPE_CAP_CLIP_HALFZ:
253   case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
254   case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
255      return 1;
256   case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
257   case PIPE_CAP_CULL_DISTANCE:
258      return 1;
259   case PIPE_CAP_VERTEXID_NOBASE:
260      return 0;
261   case PIPE_CAP_POLYGON_OFFSET_CLAMP:
262      return 0;
263   case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
264   case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
265      return 1;
266   case PIPE_CAP_CLEAR_TEXTURE:
267      return 1;
268   case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
269   case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
270   case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
271   case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
272   case PIPE_CAP_DEPTH_BOUNDS_TEST:
273   case PIPE_CAP_TGSI_TXQS:
274   case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
275   case PIPE_CAP_SHAREABLE_SHADERS:
276   case PIPE_CAP_DRAW_PARAMETERS:
277   case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
278   case PIPE_CAP_MULTI_DRAW_INDIRECT:
279   case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
280   case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
281   case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
282   case PIPE_CAP_INVALIDATE_BUFFER:
283   case PIPE_CAP_GENERATE_MIPMAP:
284   case PIPE_CAP_STRING_MARKER:
285   case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
286   case PIPE_CAP_QUERY_BUFFER_OBJECT:
287   case PIPE_CAP_QUERY_MEMORY_INFO:
288   case PIPE_CAP_PCI_GROUP:
289   case PIPE_CAP_PCI_BUS:
290   case PIPE_CAP_PCI_DEVICE:
291   case PIPE_CAP_PCI_FUNCTION:
292   case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
293   case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
294   case PIPE_CAP_TGSI_VOTE:
295   case PIPE_CAP_MAX_WINDOW_RECTANGLES:
296   case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
297   case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
298   case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
299   case PIPE_CAP_NATIVE_FENCE_FD:
300   case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
301   case PIPE_CAP_TGSI_FS_FBFETCH:
302   case PIPE_CAP_TGSI_MUL_ZERO_WINS:
303   case PIPE_CAP_TGSI_CLOCK:
304   case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
305   case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
306   case PIPE_CAP_TGSI_BALLOT:
307   case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
308   case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
309   case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
310   case PIPE_CAP_POST_DEPTH_COVERAGE:
311   case PIPE_CAP_BINDLESS_TEXTURE:
312   case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
313   case PIPE_CAP_MEMOBJ:
314   case PIPE_CAP_LOAD_CONSTBUF:
315   case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
316   case PIPE_CAP_TILE_RASTER_ORDER:
317   case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
318   case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
319   case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
320   case PIPE_CAP_CONTEXT_PRIORITY_MASK:
321   case PIPE_CAP_FENCE_SIGNAL:
322   case PIPE_CAP_CONSTBUF0_FLAGS:
323   case PIPE_CAP_PACKED_UNIFORMS:
324   case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
325   case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
326   case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
327   case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
328   case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
329   case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
330   case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
331      return 0;
332   case PIPE_CAP_MAX_GS_INVOCATIONS:
333      return 32;
334   case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
335      return 1 << 27;
336   case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
337      return 4;
338   default:
339      return u_pipe_screen_get_param_defaults(screen, param);
340   }
341}
342
343static int
344softpipe_get_shader_param(struct pipe_screen *screen,
345                          enum pipe_shader_type shader,
346                          enum pipe_shader_cap param)
347{
348   struct softpipe_screen *sp_screen = softpipe_screen(screen);
349   switch(shader)
350   {
351   case PIPE_SHADER_FRAGMENT:
352      return tgsi_exec_get_shader_param(param);
353   case PIPE_SHADER_COMPUTE:
354      return tgsi_exec_get_shader_param(param);
355   case PIPE_SHADER_VERTEX:
356   case PIPE_SHADER_GEOMETRY:
357      if (sp_screen->use_llvm)
358         return draw_get_shader_param(shader, param);
359      else
360         return draw_get_shader_param_no_llvm(shader, param);
361   default:
362      return 0;
363   }
364}
365
366static float
367softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
368{
369   switch (param) {
370   case PIPE_CAPF_MAX_LINE_WIDTH:
371      /* fall-through */
372   case PIPE_CAPF_MAX_LINE_WIDTH_AA:
373      return 255.0; /* arbitrary */
374   case PIPE_CAPF_MAX_POINT_WIDTH:
375      /* fall-through */
376   case PIPE_CAPF_MAX_POINT_WIDTH_AA:
377      return 255.0; /* arbitrary */
378   case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
379      return 16.0;
380   case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
381      return 16.0; /* arbitrary */
382   case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
383      return 0.0;
384   case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
385      return 0.0;
386   case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
387      return 0.0;
388   }
389   /* should only get here on unhandled cases */
390   debug_printf("Unexpected PIPE_CAPF %d query\n", param);
391   return 0.0;
392}
393
394/**
395 * Query format support for creating a texture, drawing surface, etc.
396 * \param format  the format to test
397 * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
398 */
399static boolean
400softpipe_is_format_supported( struct pipe_screen *screen,
401                              enum pipe_format format,
402                              enum pipe_texture_target target,
403                              unsigned sample_count,
404                              unsigned storage_sample_count,
405                              unsigned bind)
406{
407   struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
408   const struct util_format_description *format_desc;
409
410   assert(target == PIPE_BUFFER ||
411          target == PIPE_TEXTURE_1D ||
412          target == PIPE_TEXTURE_1D_ARRAY ||
413          target == PIPE_TEXTURE_2D ||
414          target == PIPE_TEXTURE_2D_ARRAY ||
415          target == PIPE_TEXTURE_RECT ||
416          target == PIPE_TEXTURE_3D ||
417          target == PIPE_TEXTURE_CUBE ||
418          target == PIPE_TEXTURE_CUBE_ARRAY);
419
420   if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
421      return false;
422
423   format_desc = util_format_description(format);
424   if (!format_desc)
425      return FALSE;
426
427   if (sample_count > 1)
428      return FALSE;
429
430   if (bind & (PIPE_BIND_DISPLAY_TARGET |
431               PIPE_BIND_SCANOUT |
432               PIPE_BIND_SHARED)) {
433      if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
434         return FALSE;
435   }
436
437   if (bind & PIPE_BIND_RENDER_TARGET) {
438      if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
439         return FALSE;
440
441      /*
442       * Although possible, it is unnatural to render into compressed or YUV
443       * surfaces. So disable these here to avoid going into weird paths
444       * inside the state trackers.
445       */
446      if (format_desc->block.width != 1 ||
447          format_desc->block.height != 1)
448         return FALSE;
449   }
450
451   if (bind & PIPE_BIND_DEPTH_STENCIL) {
452      if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
453         return FALSE;
454   }
455
456   if (format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
457      /* Software decoding is not hooked up. */
458      return FALSE;
459   }
460
461   if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
462       ((bind & PIPE_BIND_DISPLAY_TARGET) == 0) &&
463       target != PIPE_BUFFER) {
464      const struct util_format_description *desc =
465         util_format_description(format);
466      if (desc->nr_channels == 3 && desc->is_array) {
467         /* Don't support any 3-component formats for rendering/texturing
468          * since we don't support the corresponding 8-bit 3 channel UNORM
469          * formats.  This allows us to support GL_ARB_copy_image between
470          * GL_RGB8 and GL_RGB8UI, for example.  Otherwise, we may be asked to
471          * do a resource copy between PIPE_FORMAT_R8G8B8_UINT and
472          * PIPE_FORMAT_R8G8B8X8_UNORM, for example, which will not work
473          * (different bpp).
474          */
475         return FALSE;
476      }
477   }
478
479   if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
480       format != PIPE_FORMAT_ETC1_RGB8)
481      return FALSE;
482
483   /*
484    * All other operations (sampling, transfer, etc).
485    */
486
487   /*
488    * Everything else should be supported by u_format.
489    */
490   return TRUE;
491}
492
493
494static void
495softpipe_destroy_screen( struct pipe_screen *screen )
496{
497   struct softpipe_screen *sp_screen = softpipe_screen(screen);
498   struct sw_winsys *winsys = sp_screen->winsys;
499
500   if(winsys->destroy)
501      winsys->destroy(winsys);
502
503   FREE(screen);
504}
505
506
507/* This is often overriden by the co-state tracker.
508 */
509static void
510softpipe_flush_frontbuffer(struct pipe_screen *_screen,
511                           struct pipe_resource *resource,
512                           unsigned level, unsigned layer,
513                           void *context_private,
514                           struct pipe_box *sub_box)
515{
516   struct softpipe_screen *screen = softpipe_screen(_screen);
517   struct sw_winsys *winsys = screen->winsys;
518   struct softpipe_resource *texture = softpipe_resource(resource);
519
520   assert(texture->dt);
521   if (texture->dt)
522      winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
523}
524
525static uint64_t
526softpipe_get_timestamp(struct pipe_screen *_screen)
527{
528   return os_time_get_nano();
529}
530
531static int
532softpipe_get_compute_param(struct pipe_screen *_screen,
533                           enum pipe_shader_ir ir_type,
534                           enum pipe_compute_cap param,
535                           void *ret)
536{
537   switch (param) {
538   case PIPE_COMPUTE_CAP_IR_TARGET:
539      return 0;
540   case PIPE_COMPUTE_CAP_MAX_GRID_SIZE:
541      if (ret) {
542         uint64_t *grid_size = ret;
543         grid_size[0] = 65535;
544         grid_size[1] = 65535;
545         grid_size[2] = 65535;
546      }
547      return 3 * sizeof(uint64_t) ;
548   case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
549      if (ret) {
550         uint64_t *block_size = ret;
551         block_size[0] = 1024;
552         block_size[1] = 1024;
553         block_size[2] = 1024;
554      }
555      return 3 * sizeof(uint64_t);
556   case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
557      if (ret) {
558         uint64_t *max_threads_per_block = ret;
559         *max_threads_per_block = 1024;
560      }
561      return sizeof(uint64_t);
562   case PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE:
563      if (ret) {
564         uint64_t *max_local_size = ret;
565         *max_local_size = 32768;
566      }
567      return sizeof(uint64_t);
568   case PIPE_COMPUTE_CAP_GRID_DIMENSION:
569   case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE:
570   case PIPE_COMPUTE_CAP_MAX_PRIVATE_SIZE:
571   case PIPE_COMPUTE_CAP_MAX_INPUT_SIZE:
572   case PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE:
573   case PIPE_COMPUTE_CAP_MAX_CLOCK_FREQUENCY:
574   case PIPE_COMPUTE_CAP_MAX_COMPUTE_UNITS:
575   case PIPE_COMPUTE_CAP_IMAGES_SUPPORTED:
576   case PIPE_COMPUTE_CAP_SUBGROUP_SIZE:
577   case PIPE_COMPUTE_CAP_ADDRESS_BITS:
578   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
579      break;
580   }
581   return 0;
582}
583
584/**
585 * Create a new pipe_screen object
586 * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
587 */
588struct pipe_screen *
589softpipe_create_screen(struct sw_winsys *winsys)
590{
591   struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
592
593   if (!screen)
594      return NULL;
595
596   screen->winsys = winsys;
597
598   screen->base.destroy = softpipe_destroy_screen;
599
600   screen->base.get_name = softpipe_get_name;
601   screen->base.get_vendor = softpipe_get_vendor;
602   screen->base.get_device_vendor = softpipe_get_vendor; // TODO should be the CPU vendor
603   screen->base.get_param = softpipe_get_param;
604   screen->base.get_shader_param = softpipe_get_shader_param;
605   screen->base.get_paramf = softpipe_get_paramf;
606   screen->base.get_timestamp = softpipe_get_timestamp;
607   screen->base.is_format_supported = softpipe_is_format_supported;
608   screen->base.context_create = softpipe_create_context;
609   screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
610   screen->base.get_compute_param = softpipe_get_compute_param;
611   screen->use_llvm = debug_get_option_use_llvm();
612
613   softpipe_init_screen_texture_funcs(&screen->base);
614   softpipe_init_screen_fence_funcs(&screen->base);
615
616   return &screen->base;
617}
618