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_math.h"
31 #include "util/u_cpu_detect.h"
32 #include "util/u_format.h"
33 #include "util/u_string.h"
34 #include "util/u_format_s3tc.h"
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "draw/draw_context.h"
38 #include "gallivm/lp_bld_type.h"
39
40 #include "os/os_misc.h"
41 #include "util/os_time.h"
42 #include "lp_texture.h"
43 #include "lp_fence.h"
44 #include "lp_jit.h"
45 #include "lp_screen.h"
46 #include "lp_context.h"
47 #include "lp_debug.h"
48 #include "lp_public.h"
49 #include "lp_limits.h"
50 #include "lp_rast.h"
51
52 #include "state_tracker/sw_winsys.h"
53
54 #ifdef DEBUG
55 int LP_DEBUG = 0;
56
57 static const struct debug_named_value lp_debug_flags[] = {
58 { "pipe", DEBUG_PIPE, NULL },
59 { "tgsi", DEBUG_TGSI, NULL },
60 { "tex", DEBUG_TEX, NULL },
61 { "setup", DEBUG_SETUP, NULL },
62 { "rast", DEBUG_RAST, NULL },
63 { "query", DEBUG_QUERY, NULL },
64 { "screen", DEBUG_SCREEN, NULL },
65 { "counters", DEBUG_COUNTERS, NULL },
66 { "scene", DEBUG_SCENE, NULL },
67 { "fence", DEBUG_FENCE, NULL },
68 { "mem", DEBUG_MEM, NULL },
69 { "fs", DEBUG_FS, NULL },
70 DEBUG_NAMED_VALUE_END
71 };
72 #endif
73
74 int LP_PERF = 0;
75 static const struct debug_named_value lp_perf_flags[] = {
76 { "texmem", PERF_TEX_MEM, NULL },
77 { "no_mipmap", PERF_NO_MIPMAPS, NULL },
78 { "no_linear", PERF_NO_LINEAR, NULL },
79 { "no_mip_linear", PERF_NO_MIP_LINEAR, NULL },
80 { "no_tex", PERF_NO_TEX, NULL },
81 { "no_blend", PERF_NO_BLEND, NULL },
82 { "no_depth", PERF_NO_DEPTH, NULL },
83 { "no_alphatest", PERF_NO_ALPHATEST, NULL },
84 DEBUG_NAMED_VALUE_END
85 };
86
87
88 static const char *
llvmpipe_get_vendor(struct pipe_screen * screen)89 llvmpipe_get_vendor(struct pipe_screen *screen)
90 {
91 return "VMware, Inc.";
92 }
93
94
95 static const char *
llvmpipe_get_name(struct pipe_screen * screen)96 llvmpipe_get_name(struct pipe_screen *screen)
97 {
98 static char buf[100];
99 util_snprintf(buf, sizeof(buf), "llvmpipe (LLVM %u.%u, %u bits)",
100 HAVE_LLVM >> 8, HAVE_LLVM & 0xff,
101 lp_native_vector_width );
102 return buf;
103 }
104
105
106 static int
llvmpipe_get_param(struct pipe_screen * screen,enum pipe_cap param)107 llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
108 {
109 switch (param) {
110 case PIPE_CAP_NPOT_TEXTURES:
111 case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
112 case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
113 return 1;
114 case PIPE_CAP_SM3:
115 return 1;
116 case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
117 return 1;
118 case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
119 return PIPE_MAX_SO_BUFFERS;
120 case PIPE_CAP_ANISOTROPIC_FILTER:
121 return 0;
122 case PIPE_CAP_POINT_SPRITE:
123 return 1;
124 case PIPE_CAP_MAX_RENDER_TARGETS:
125 return PIPE_MAX_COLOR_BUFS;
126 case PIPE_CAP_OCCLUSION_QUERY:
127 return 1;
128 case PIPE_CAP_QUERY_TIME_ELAPSED:
129 return 0;
130 case PIPE_CAP_QUERY_TIMESTAMP:
131 return 1;
132 case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
133 return 1;
134 case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
135 return 1;
136 case PIPE_CAP_TEXTURE_SWIZZLE:
137 return 1;
138 case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
139 return 0;
140 case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
141 return LP_MAX_TEXTURE_2D_LEVELS;
142 case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
143 return LP_MAX_TEXTURE_3D_LEVELS;
144 case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
145 return LP_MAX_TEXTURE_CUBE_LEVELS;
146 case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
147 return LP_MAX_TEXTURE_ARRAY_LAYERS;
148 case PIPE_CAP_BLEND_EQUATION_SEPARATE:
149 return 1;
150 case PIPE_CAP_INDEP_BLEND_ENABLE:
151 return 1;
152 case PIPE_CAP_INDEP_BLEND_FUNC:
153 return 1;
154 case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
155 case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
156 case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
157 return 1;
158 case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
159 return 0;
160 case PIPE_CAP_PRIMITIVE_RESTART:
161 return 1;
162 case PIPE_CAP_DEPTH_CLIP_DISABLE:
163 return 1;
164 case PIPE_CAP_SHADER_STENCIL_EXPORT:
165 return 1;
166 case PIPE_CAP_TGSI_INSTANCEID:
167 case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
168 case PIPE_CAP_START_INSTANCE:
169 return 1;
170 case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
171 return 0;
172 case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
173 return 1;
174 case PIPE_CAP_SEAMLESS_CUBE_MAP:
175 case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
176 return 1;
177 /* this is a lie could support arbitrary large offsets */
178 case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
179 case PIPE_CAP_MIN_TEXEL_OFFSET:
180 return -32;
181 case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
182 case PIPE_CAP_MAX_TEXEL_OFFSET:
183 return 31;
184 case PIPE_CAP_CONDITIONAL_RENDER:
185 return 1;
186 case PIPE_CAP_TEXTURE_BARRIER:
187 return 0;
188 case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
189 case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
190 return 16*4;
191 case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
192 case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
193 return 1024;
194 case PIPE_CAP_MAX_VERTEX_STREAMS:
195 return 1;
196 case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
197 return 2048;
198 case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
199 case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
200 return 1;
201 case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
202 return 0;
203 case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
204 case PIPE_CAP_VERTEX_COLOR_CLAMPED:
205 return 1;
206 case PIPE_CAP_GLSL_FEATURE_LEVEL:
207 return 330;
208 case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
209 return 0;
210 case PIPE_CAP_COMPUTE:
211 return 0;
212 case PIPE_CAP_USER_VERTEX_BUFFERS:
213 return 1;
214 case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
215 case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
216 case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
217 case PIPE_CAP_TGSI_TEXCOORD:
218 return 0;
219 case PIPE_CAP_DRAW_INDIRECT:
220 return 1;
221
222 case PIPE_CAP_CUBE_MAP_ARRAY:
223 return 1;
224 case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
225 return 16;
226 case PIPE_CAP_TEXTURE_MULTISAMPLE:
227 return 0;
228 case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
229 return 64;
230 case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
231 return 1;
232 case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
233 return 65536;
234 case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
235 return 1;
236 case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
237 return 0;
238 case PIPE_CAP_MAX_VIEWPORTS:
239 return PIPE_MAX_VIEWPORTS;
240 case PIPE_CAP_ENDIANNESS:
241 return PIPE_ENDIAN_NATIVE;
242 case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
243 return 1;
244 case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
245 return 1;
246 case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
247 return 4;
248 case PIPE_CAP_TEXTURE_GATHER_SM5:
249 case PIPE_CAP_SAMPLE_SHADING:
250 case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
251 return 0;
252 case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
253 return 1;
254 case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
255 case PIPE_CAP_TGSI_TEX_TXF_LZ:
256 return 0;
257 case PIPE_CAP_SAMPLER_VIEW_TARGET:
258 return 1;
259 case PIPE_CAP_FAKE_SW_MSAA:
260 return 1;
261 case PIPE_CAP_TEXTURE_QUERY_LOD:
262 case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
263 case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
264 case PIPE_CAP_DOUBLES:
265 case PIPE_CAP_INT64:
266 case PIPE_CAP_INT64_DIVMOD:
267 case PIPE_CAP_QUERY_SO_OVERFLOW:
268 return 1;
269
270 case PIPE_CAP_VENDOR_ID:
271 return 0xFFFFFFFF;
272 case PIPE_CAP_DEVICE_ID:
273 return 0xFFFFFFFF;
274 case PIPE_CAP_ACCELERATED:
275 return 0;
276 case PIPE_CAP_VIDEO_MEMORY: {
277 /* XXX: Do we want to return the full amount fo system memory ? */
278 uint64_t system_memory;
279
280 if (!os_get_total_physical_memory(&system_memory))
281 return 0;
282
283 if (sizeof(void *) == 4)
284 /* Cap to 2 GB on 32 bits system. We do this because llvmpipe does
285 * eat application memory, which is quite limited on 32 bits. App
286 * shouldn't expect too much available memory. */
287 system_memory = MIN2(system_memory, 2048 << 20);
288
289 return (int)(system_memory >> 20);
290 }
291 case PIPE_CAP_UMA:
292 return 0;
293 case PIPE_CAP_CLIP_HALFZ:
294 return 1;
295 case PIPE_CAP_VERTEXID_NOBASE:
296 return 0;
297 case PIPE_CAP_POLYGON_OFFSET_CLAMP:
298 case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
299 case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
300 return 1;
301 case PIPE_CAP_CULL_DISTANCE:
302 return 1;
303 case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
304 return 1;
305 case PIPE_CAP_CLEAR_TEXTURE:
306 return 1;
307 case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
308 case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
309 case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
310 case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
311 case PIPE_CAP_DEPTH_BOUNDS_TEST:
312 case PIPE_CAP_TGSI_TXQS:
313 case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
314 case PIPE_CAP_SHAREABLE_SHADERS:
315 case PIPE_CAP_DRAW_PARAMETERS:
316 case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
317 case PIPE_CAP_MULTI_DRAW_INDIRECT:
318 case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
319 case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
320 case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
321 case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
322 case PIPE_CAP_INVALIDATE_BUFFER:
323 case PIPE_CAP_GENERATE_MIPMAP:
324 case PIPE_CAP_STRING_MARKER:
325 case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
326 case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
327 case PIPE_CAP_QUERY_BUFFER_OBJECT:
328 case PIPE_CAP_QUERY_MEMORY_INFO:
329 case PIPE_CAP_PCI_GROUP:
330 case PIPE_CAP_PCI_BUS:
331 case PIPE_CAP_PCI_DEVICE:
332 case PIPE_CAP_PCI_FUNCTION:
333 case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
334 case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
335 case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
336 case PIPE_CAP_TGSI_VOTE:
337 case PIPE_CAP_MAX_WINDOW_RECTANGLES:
338 case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
339 case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
340 case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
341 case PIPE_CAP_NATIVE_FENCE_FD:
342 case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
343 case PIPE_CAP_TGSI_FS_FBFETCH:
344 case PIPE_CAP_TGSI_MUL_ZERO_WINS:
345 case PIPE_CAP_TGSI_CLOCK:
346 case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
347 case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
348 case PIPE_CAP_TGSI_BALLOT:
349 case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
350 case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
351 case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
352 case PIPE_CAP_POST_DEPTH_COVERAGE:
353 case PIPE_CAP_BINDLESS_TEXTURE:
354 case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
355 case PIPE_CAP_MEMOBJ:
356 case PIPE_CAP_LOAD_CONSTBUF:
357 case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
358 case PIPE_CAP_TILE_RASTER_ORDER:
359 case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
360 case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
361 case PIPE_CAP_CONTEXT_PRIORITY_MASK:
362 return 0;
363 }
364 /* should only get here on unhandled cases */
365 debug_printf("Unexpected PIPE_CAP %d query\n", param);
366 return 0;
367 }
368
369 static int
llvmpipe_get_shader_param(struct pipe_screen * screen,enum pipe_shader_type shader,enum pipe_shader_cap param)370 llvmpipe_get_shader_param(struct pipe_screen *screen,
371 enum pipe_shader_type shader,
372 enum pipe_shader_cap param)
373 {
374 switch(shader)
375 {
376 case PIPE_SHADER_FRAGMENT:
377 switch (param) {
378 default:
379 return gallivm_get_shader_param(param);
380 }
381 case PIPE_SHADER_VERTEX:
382 case PIPE_SHADER_GEOMETRY:
383 switch (param) {
384 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
385 /* At this time, the draw module and llvmpipe driver only
386 * support vertex shader texture lookups when LLVM is enabled in
387 * the draw module.
388 */
389 if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
390 return PIPE_MAX_SAMPLERS;
391 else
392 return 0;
393 case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
394 if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
395 return PIPE_MAX_SHADER_SAMPLER_VIEWS;
396 else
397 return 0;
398 default:
399 return draw_get_shader_param(shader, param);
400 }
401 default:
402 return 0;
403 }
404 }
405
406 static float
llvmpipe_get_paramf(struct pipe_screen * screen,enum pipe_capf param)407 llvmpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
408 {
409 switch (param) {
410 case PIPE_CAPF_MAX_LINE_WIDTH:
411 /* fall-through */
412 case PIPE_CAPF_MAX_LINE_WIDTH_AA:
413 return 255.0; /* arbitrary */
414 case PIPE_CAPF_MAX_POINT_WIDTH:
415 /* fall-through */
416 case PIPE_CAPF_MAX_POINT_WIDTH_AA:
417 return 255.0; /* arbitrary */
418 case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
419 return 16.0; /* not actually signficant at this time */
420 case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
421 return 16.0; /* arbitrary */
422 case PIPE_CAPF_GUARD_BAND_LEFT:
423 case PIPE_CAPF_GUARD_BAND_TOP:
424 case PIPE_CAPF_GUARD_BAND_RIGHT:
425 case PIPE_CAPF_GUARD_BAND_BOTTOM:
426 return 0.0;
427 }
428 /* should only get here on unhandled cases */
429 debug_printf("Unexpected PIPE_CAP %d query\n", param);
430 return 0.0;
431 }
432
433
434 /**
435 * Query format support for creating a texture, drawing surface, etc.
436 * \param format the format to test
437 * \param type one of PIPE_TEXTURE, PIPE_SURFACE
438 */
439 static boolean
llvmpipe_is_format_supported(struct pipe_screen * _screen,enum pipe_format format,enum pipe_texture_target target,unsigned sample_count,unsigned bind)440 llvmpipe_is_format_supported( struct pipe_screen *_screen,
441 enum pipe_format format,
442 enum pipe_texture_target target,
443 unsigned sample_count,
444 unsigned bind)
445 {
446 struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
447 struct sw_winsys *winsys = screen->winsys;
448 const struct util_format_description *format_desc;
449
450 format_desc = util_format_description(format);
451 if (!format_desc)
452 return FALSE;
453
454 assert(target == PIPE_BUFFER ||
455 target == PIPE_TEXTURE_1D ||
456 target == PIPE_TEXTURE_1D_ARRAY ||
457 target == PIPE_TEXTURE_2D ||
458 target == PIPE_TEXTURE_2D_ARRAY ||
459 target == PIPE_TEXTURE_RECT ||
460 target == PIPE_TEXTURE_3D ||
461 target == PIPE_TEXTURE_CUBE ||
462 target == PIPE_TEXTURE_CUBE_ARRAY);
463
464 if (sample_count > 1)
465 return FALSE;
466
467 if (bind & PIPE_BIND_RENDER_TARGET) {
468 if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
469 /* this is a lie actually other formats COULD exist where we would fail */
470 if (format_desc->nr_channels < 3)
471 return FALSE;
472 }
473 else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB)
474 return FALSE;
475
476 if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN &&
477 format != PIPE_FORMAT_R11G11B10_FLOAT)
478 return FALSE;
479
480 assert(format_desc->block.width == 1);
481 assert(format_desc->block.height == 1);
482
483 if (format_desc->is_mixed)
484 return FALSE;
485
486 if (!format_desc->is_array && !format_desc->is_bitmask &&
487 format != PIPE_FORMAT_R11G11B10_FLOAT)
488 return FALSE;
489 }
490
491 if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
492 ((bind & PIPE_BIND_DISPLAY_TARGET) == 0)) {
493 /* Disable all 3-channel formats, where channel size != 32 bits.
494 * In some cases we run into crashes (in generate_unswizzled_blend()),
495 * for 3-channel RGB16 variants, there was an apparent LLVM bug.
496 * In any case, disabling the shallower 3-channel formats avoids a
497 * number of issues with GL_ARB_copy_image support.
498 */
499 if (format_desc->is_array &&
500 format_desc->nr_channels == 3 &&
501 format_desc->block.bits != 96) {
502 return FALSE;
503 }
504 }
505
506 if (bind & PIPE_BIND_DISPLAY_TARGET) {
507 if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
508 return FALSE;
509 }
510
511 if (bind & PIPE_BIND_DEPTH_STENCIL) {
512 if (format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
513 return FALSE;
514
515 if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
516 return FALSE;
517
518 /* TODO: Support stencil-only formats */
519 if (format_desc->swizzle[0] == PIPE_SWIZZLE_NONE) {
520 return FALSE;
521 }
522 }
523
524 if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC ||
525 format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
526 /* Software decoding is not hooked up. */
527 return FALSE;
528 }
529
530 if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
531 format != PIPE_FORMAT_ETC1_RGB8)
532 return FALSE;
533
534 /*
535 * Everything can be supported by u_format
536 * (those without fetch_rgba_float might be not but shouldn't hit that)
537 */
538
539 return TRUE;
540 }
541
542
543
544
545 static void
llvmpipe_flush_frontbuffer(struct pipe_screen * _screen,struct pipe_resource * resource,unsigned level,unsigned layer,void * context_private,struct pipe_box * sub_box)546 llvmpipe_flush_frontbuffer(struct pipe_screen *_screen,
547 struct pipe_resource *resource,
548 unsigned level, unsigned layer,
549 void *context_private,
550 struct pipe_box *sub_box)
551 {
552 struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
553 struct sw_winsys *winsys = screen->winsys;
554 struct llvmpipe_resource *texture = llvmpipe_resource(resource);
555
556 assert(texture->dt);
557 if (texture->dt)
558 winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
559 }
560
561 static void
llvmpipe_destroy_screen(struct pipe_screen * _screen)562 llvmpipe_destroy_screen( struct pipe_screen *_screen )
563 {
564 struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
565 struct sw_winsys *winsys = screen->winsys;
566
567 if (screen->rast)
568 lp_rast_destroy(screen->rast);
569
570 lp_jit_screen_cleanup(screen);
571
572 if(winsys->destroy)
573 winsys->destroy(winsys);
574
575 mtx_destroy(&screen->rast_mutex);
576
577 FREE(screen);
578 }
579
580
581
582
583 /**
584 * Fence reference counting.
585 */
586 static void
llvmpipe_fence_reference(struct pipe_screen * screen,struct pipe_fence_handle ** ptr,struct pipe_fence_handle * fence)587 llvmpipe_fence_reference(struct pipe_screen *screen,
588 struct pipe_fence_handle **ptr,
589 struct pipe_fence_handle *fence)
590 {
591 struct lp_fence **old = (struct lp_fence **) ptr;
592 struct lp_fence *f = (struct lp_fence *) fence;
593
594 lp_fence_reference(old, f);
595 }
596
597
598 /**
599 * Wait for the fence to finish.
600 */
601 static boolean
llvmpipe_fence_finish(struct pipe_screen * screen,struct pipe_context * ctx,struct pipe_fence_handle * fence_handle,uint64_t timeout)602 llvmpipe_fence_finish(struct pipe_screen *screen,
603 struct pipe_context *ctx,
604 struct pipe_fence_handle *fence_handle,
605 uint64_t timeout)
606 {
607 struct lp_fence *f = (struct lp_fence *) fence_handle;
608
609 if (!timeout)
610 return lp_fence_signalled(f);
611
612 lp_fence_wait(f);
613 return TRUE;
614 }
615
616 static uint64_t
llvmpipe_get_timestamp(struct pipe_screen * _screen)617 llvmpipe_get_timestamp(struct pipe_screen *_screen)
618 {
619 return os_time_get_nano();
620 }
621
622 /**
623 * Create a new pipe_screen object
624 * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
625 */
626 struct pipe_screen *
llvmpipe_create_screen(struct sw_winsys * winsys)627 llvmpipe_create_screen(struct sw_winsys *winsys)
628 {
629 struct llvmpipe_screen *screen;
630
631 util_cpu_detect();
632
633 #ifdef DEBUG
634 LP_DEBUG = debug_get_flags_option("LP_DEBUG", lp_debug_flags, 0 );
635 #endif
636
637 LP_PERF = debug_get_flags_option("LP_PERF", lp_perf_flags, 0 );
638
639 screen = CALLOC_STRUCT(llvmpipe_screen);
640 if (!screen)
641 return NULL;
642
643 if (!lp_jit_screen_init(screen)) {
644 FREE(screen);
645 return NULL;
646 }
647
648 screen->winsys = winsys;
649
650 screen->base.destroy = llvmpipe_destroy_screen;
651
652 screen->base.get_name = llvmpipe_get_name;
653 screen->base.get_vendor = llvmpipe_get_vendor;
654 screen->base.get_device_vendor = llvmpipe_get_vendor; // TODO should be the CPU vendor
655 screen->base.get_param = llvmpipe_get_param;
656 screen->base.get_shader_param = llvmpipe_get_shader_param;
657 screen->base.get_paramf = llvmpipe_get_paramf;
658 screen->base.is_format_supported = llvmpipe_is_format_supported;
659
660 screen->base.context_create = llvmpipe_create_context;
661 screen->base.flush_frontbuffer = llvmpipe_flush_frontbuffer;
662 screen->base.fence_reference = llvmpipe_fence_reference;
663 screen->base.fence_finish = llvmpipe_fence_finish;
664
665 screen->base.get_timestamp = llvmpipe_get_timestamp;
666
667 llvmpipe_init_screen_resource_funcs(&screen->base);
668
669 screen->num_threads = util_cpu_caps.nr_cpus > 1 ? util_cpu_caps.nr_cpus : 0;
670 #ifdef PIPE_SUBSYSTEM_EMBEDDED
671 screen->num_threads = 0;
672 #endif
673 screen->num_threads = debug_get_num_option("LP_NUM_THREADS", screen->num_threads);
674 screen->num_threads = MIN2(screen->num_threads, LP_MAX_THREADS);
675
676 screen->rast = lp_rast_create(screen->num_threads);
677 if (!screen->rast) {
678 lp_jit_screen_cleanup(screen);
679 FREE(screen);
680 return NULL;
681 }
682 (void) mtx_init(&screen->rast_mutex, mtx_plain);
683
684 return &screen->base;
685 }
686