sp_screen.c revision af69d88d 
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_video.h"
33#include "os/os_misc.h"
34#include "os/os_time.h"
35#include "pipe/p_defines.h"
36#include "pipe/p_screen.h"
37#include "draw/draw_context.h"
38
39#include "state_tracker/sw_winsys.h"
40#include "tgsi/tgsi_exec.h"
41
42#include "sp_texture.h"
43#include "sp_screen.h"
44#include "sp_context.h"
45#include "sp_fence.h"
46#include "sp_public.h"
47
48DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
49
50static const char *
51softpipe_get_vendor(struct pipe_screen *screen)
52{
53   return "VMware, Inc.";
54}
55
56
57static const char *
58softpipe_get_name(struct pipe_screen *screen)
59{
60   return "softpipe";
61}
62
63
64static int
65softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
66{
67   switch (param) {
68   case PIPE_CAP_NPOT_TEXTURES:
69   case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
70      return 1;
71   case PIPE_CAP_TWO_SIDED_STENCIL:
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      return 1;
91   case PIPE_CAP_TEXTURE_SHADOW_MAP:
92      return 1;
93   case PIPE_CAP_TEXTURE_SWIZZLE:
94      return 1;
95   case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
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_PRIMITIVE_RESTART:
127      return 1;
128   case PIPE_CAP_SHADER_STENCIL_EXPORT:
129      return 1;
130   case PIPE_CAP_TGSI_INSTANCEID:
131   case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
132      return 1;
133   case PIPE_CAP_SEAMLESS_CUBE_MAP:
134   case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
135      return 1;
136   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
137      return 256; /* for GL3 */
138   case PIPE_CAP_MIN_TEXEL_OFFSET:
139      return -8;
140   case PIPE_CAP_MAX_TEXEL_OFFSET:
141      return 7;
142   case PIPE_CAP_CONDITIONAL_RENDER:
143      return 1;
144   case PIPE_CAP_TEXTURE_BARRIER:
145      return 0;
146   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
147   case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
148   case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
149      return 1;
150   case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
151      return 0;
152   case PIPE_CAP_GLSL_FEATURE_LEVEL:
153      return 330;
154   case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
155      return 0;
156   case PIPE_CAP_COMPUTE:
157      return 0;
158   case PIPE_CAP_USER_VERTEX_BUFFERS:
159   case PIPE_CAP_USER_INDEX_BUFFERS:
160   case PIPE_CAP_USER_CONSTANT_BUFFERS:
161   case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
162   case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
163      return 1;
164   case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
165      return 16;
166   case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
167   case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
168   case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
169   case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
170   case PIPE_CAP_START_INSTANCE:
171   case PIPE_CAP_TEXTURE_MULTISAMPLE:
172      return 0;
173   case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
174      return 64;
175   case PIPE_CAP_QUERY_TIMESTAMP:
176   case PIPE_CAP_CUBE_MAP_ARRAY:
177      return 1;
178   case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
179      return 1;
180   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
181      return 65536;
182   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
183      return 0;
184   case PIPE_CAP_TGSI_TEXCOORD:
185   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
186      return 0;
187   case PIPE_CAP_MAX_VIEWPORTS:
188      return 1;
189   case PIPE_CAP_ENDIANNESS:
190      return PIPE_ENDIAN_NATIVE;
191   case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
192   case PIPE_CAP_TEXTURE_GATHER_SM5:
193   case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
194   case PIPE_CAP_TEXTURE_QUERY_LOD:
195   case PIPE_CAP_SAMPLE_SHADING:
196   case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
197   case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
198   case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
199      return 0;
200   case PIPE_CAP_FAKE_SW_MSAA:
201      return 1;
202   case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
203   case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
204      return 0;
205   case PIPE_CAP_DRAW_INDIRECT:
206      return 1;
207
208   case PIPE_CAP_VENDOR_ID:
209      return 0xFFFFFFFF;
210   case PIPE_CAP_DEVICE_ID:
211      return 0xFFFFFFFF;
212   case PIPE_CAP_ACCELERATED:
213      return 0;
214   case PIPE_CAP_VIDEO_MEMORY: {
215      /* XXX: Do we want to return the full amount fo system memory ? */
216      uint64_t system_memory;
217
218      if (!os_get_total_physical_memory(&system_memory))
219         return 0;
220
221      return (int)(system_memory >> 20);
222   }
223   case PIPE_CAP_UMA:
224      return 0;
225   case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
226      return 1;
227   }
228   /* should only get here on unhandled cases */
229   debug_printf("Unexpected PIPE_CAP %d query\n", param);
230   return 0;
231}
232
233static int
234softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
235{
236   struct softpipe_screen *sp_screen = softpipe_screen(screen);
237   switch(shader)
238   {
239   case PIPE_SHADER_FRAGMENT:
240      return tgsi_exec_get_shader_param(param);
241   case PIPE_SHADER_VERTEX:
242   case PIPE_SHADER_GEOMETRY:
243      switch (param) {
244      case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
245      case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
246         if (sp_screen->use_llvm)
247            /* Softpipe doesn't yet know how to tell draw/llvm about textures */
248            return 0;
249         else
250            return PIPE_MAX_SAMPLERS;
251      default:
252         if (sp_screen->use_llvm)
253            return draw_get_shader_param(shader, param);
254         else
255            return draw_get_shader_param_no_llvm(shader, param);
256      }
257   default:
258      return 0;
259   }
260}
261
262static float
263softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
264{
265   switch (param) {
266   case PIPE_CAPF_MAX_LINE_WIDTH:
267      /* fall-through */
268   case PIPE_CAPF_MAX_LINE_WIDTH_AA:
269      return 255.0; /* arbitrary */
270   case PIPE_CAPF_MAX_POINT_WIDTH:
271      /* fall-through */
272   case PIPE_CAPF_MAX_POINT_WIDTH_AA:
273      return 255.0; /* arbitrary */
274   case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
275      return 16.0;
276   case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
277      return 16.0; /* arbitrary */
278   case PIPE_CAPF_GUARD_BAND_LEFT:
279   case PIPE_CAPF_GUARD_BAND_TOP:
280   case PIPE_CAPF_GUARD_BAND_RIGHT:
281   case PIPE_CAPF_GUARD_BAND_BOTTOM:
282      return 0.0;
283   }
284   /* should only get here on unhandled cases */
285   debug_printf("Unexpected PIPE_CAPF %d query\n", param);
286   return 0.0;
287}
288
289/**
290 * Query format support for creating a texture, drawing surface, etc.
291 * \param format  the format to test
292 * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
293 */
294static boolean
295softpipe_is_format_supported( struct pipe_screen *screen,
296                              enum pipe_format format,
297                              enum pipe_texture_target target,
298                              unsigned sample_count,
299                              unsigned bind)
300{
301   struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
302   const struct util_format_description *format_desc;
303
304   assert(target == PIPE_BUFFER ||
305          target == PIPE_TEXTURE_1D ||
306          target == PIPE_TEXTURE_1D_ARRAY ||
307          target == PIPE_TEXTURE_2D ||
308          target == PIPE_TEXTURE_2D_ARRAY ||
309          target == PIPE_TEXTURE_RECT ||
310          target == PIPE_TEXTURE_3D ||
311          target == PIPE_TEXTURE_CUBE ||
312          target == PIPE_TEXTURE_CUBE_ARRAY);
313
314   format_desc = util_format_description(format);
315   if (!format_desc)
316      return FALSE;
317
318   if (sample_count > 1)
319      return FALSE;
320
321   if (bind & (PIPE_BIND_DISPLAY_TARGET |
322               PIPE_BIND_SCANOUT |
323               PIPE_BIND_SHARED)) {
324      if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
325         return FALSE;
326   }
327
328   if (bind & PIPE_BIND_RENDER_TARGET) {
329      if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
330         return FALSE;
331
332      /*
333       * Although possible, it is unnatural to render into compressed or YUV
334       * surfaces. So disable these here to avoid going into weird paths
335       * inside the state trackers.
336       */
337      if (format_desc->block.width != 1 ||
338          format_desc->block.height != 1)
339         return FALSE;
340   }
341
342   if (bind & PIPE_BIND_DEPTH_STENCIL) {
343      if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
344         return FALSE;
345   }
346
347   if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) {
348      /* Software decoding is not hooked up. */
349      return FALSE;
350   }
351
352   /*
353    * All other operations (sampling, transfer, etc).
354    */
355
356   if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
357      return util_format_s3tc_enabled;
358   }
359
360   /*
361    * Everything else should be supported by u_format.
362    */
363   return TRUE;
364}
365
366
367static void
368softpipe_destroy_screen( struct pipe_screen *screen )
369{
370   struct softpipe_screen *sp_screen = softpipe_screen(screen);
371   struct sw_winsys *winsys = sp_screen->winsys;
372
373   if(winsys->destroy)
374      winsys->destroy(winsys);
375
376   FREE(screen);
377}
378
379
380/* This is often overriden by the co-state tracker.
381 */
382static void
383softpipe_flush_frontbuffer(struct pipe_screen *_screen,
384                           struct pipe_resource *resource,
385                           unsigned level, unsigned layer,
386                           void *context_private,
387                           struct pipe_box *sub_box)
388{
389   struct softpipe_screen *screen = softpipe_screen(_screen);
390   struct sw_winsys *winsys = screen->winsys;
391   struct softpipe_resource *texture = softpipe_resource(resource);
392
393   assert(texture->dt);
394   if (texture->dt)
395      winsys->displaytarget_display(winsys, texture->dt, context_private, sub_box);
396}
397
398static uint64_t
399softpipe_get_timestamp(struct pipe_screen *_screen)
400{
401   return os_time_get_nano();
402}
403
404/**
405 * Create a new pipe_screen object
406 * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
407 */
408struct pipe_screen *
409softpipe_create_screen(struct sw_winsys *winsys)
410{
411   struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
412
413   if (!screen)
414      return NULL;
415
416   screen->winsys = winsys;
417
418   screen->base.destroy = softpipe_destroy_screen;
419
420   screen->base.get_name = softpipe_get_name;
421   screen->base.get_vendor = softpipe_get_vendor;
422   screen->base.get_param = softpipe_get_param;
423   screen->base.get_shader_param = softpipe_get_shader_param;
424   screen->base.get_paramf = softpipe_get_paramf;
425   screen->base.get_timestamp = softpipe_get_timestamp;
426   screen->base.is_format_supported = softpipe_is_format_supported;
427   screen->base.context_create = softpipe_create_context;
428   screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
429
430   screen->use_llvm = debug_get_option_use_llvm();
431
432   util_format_s3tc_init();
433
434   softpipe_init_screen_texture_funcs(&screen->base);
435   softpipe_init_screen_fence_funcs(&screen->base);
436
437   return &screen->base;
438}
439