src/gallium/drivers/softpipe/sp_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 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
  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_time.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_screen.h"
  36 #include "draw/draw_context.h"
  37 #include "vl/vl_decoder.h"
  38 #include "vl/vl_video_buffer.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
  49 DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
  50
  51 static const char *
  52 softpipe_get_vendor(struct pipe_screen *screen)
  53 {
  54    return "VMware, Inc.";
  55 }
  56
  57
  58 static const char *
  59 softpipe_get_name(struct pipe_screen *screen)
  60 {
  61    return "softpipe";
  62 }
  63
  64
  65 static int
  66 softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  67 {
  68    switch (param) {
  69    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  70       return 2 * PIPE_MAX_SAMPLERS;  /* VS + FS */
  71    case PIPE_CAP_NPOT_TEXTURES:
  72       return 1;
  73    case PIPE_CAP_TWO_SIDED_STENCIL:
  74       return 1;
  75    case PIPE_CAP_SM3:
  76       return 1;
  77    case PIPE_CAP_ANISOTROPIC_FILTER:
  78       return 1;
  79    case PIPE_CAP_POINT_SPRITE:
  80       return 1;
  81    case PIPE_CAP_MAX_RENDER_TARGETS:
  82       return PIPE_MAX_COLOR_BUFS;
  83    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  84       return 1;
  85    case PIPE_CAP_OCCLUSION_QUERY:
  86       return 1;
  87    case PIPE_CAP_QUERY_TIME_ELAPSED:
  88       return 1;
  89    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  90       return 1;
  91    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  92       return 1;
  93    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  94       return 1;
  95    case PIPE_CAP_TEXTURE_SWIZZLE:
  96       return 1;
  97    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  98       return 0;
  99    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 100       return SP_MAX_TEXTURE_2D_LEVELS;
 101    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 102       return SP_MAX_TEXTURE_3D_LEVELS;
 103    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 104       return SP_MAX_TEXTURE_CUBE_LEVELS;
 105    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 106       return 1;
 107    case PIPE_CAP_INDEP_BLEND_ENABLE:
 108       return 1;
 109    case PIPE_CAP_INDEP_BLEND_FUNC:
 110       return 1;
 111    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 112    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 113    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 114    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 115       return 1;
 116    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 117       return 0;
 118    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 119       return PIPE_MAX_SO_BUFFERS;
 120    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 121    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 122       return 16*4;
 123    case PIPE_CAP_PRIMITIVE_RESTART:
 124       return 1;
 125    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 126       return 1;
 127    case PIPE_CAP_TGSI_INSTANCEID:
 128    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 129       return 1;
 130    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 131    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 132       return 1;
 133    case PIPE_CAP_SCALED_RESOLVE:
 134       return 0;
 135    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 136       return 256; /* for GL3 */
 137    case PIPE_CAP_MIN_TEXEL_OFFSET:
 138       return -8;
 139    case PIPE_CAP_MAX_TEXEL_OFFSET:
 140       return 7;
 141    case PIPE_CAP_CONDITIONAL_RENDER:
 142       return 1;
 143    case PIPE_CAP_TEXTURE_BARRIER:
 144       return 0;
 145    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 146    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 147    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 148       return 1;
 149    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 150       return 0;
 151    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 152       return 140;
 153    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 154       return 0;
 155    case PIPE_CAP_COMPUTE:
 156       return 0;
 157    case PIPE_CAP_USER_VERTEX_BUFFERS:
 158    case PIPE_CAP_USER_INDEX_BUFFERS:
 159    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 160    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 161       return 1;
 162    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 163       return 16;
 164    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 165    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 166    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 167    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 168    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 169    case PIPE_CAP_START_INSTANCE:
 170    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 171    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 172       return 0;
 173    case PIPE_CAP_QUERY_TIMESTAMP:
 174    case PIPE_CAP_CUBE_MAP_ARRAY:
 175       return 1;
 176    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 177       return 1;
 178    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 179       return 0;
 180    case PIPE_CAP_TGSI_TEXCOORD:
 181    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 182       return 0;
 183    }
 184    /* should only get here on unhandled cases */
 185    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 186    return 0;
 187 }
 188
 189 static int
 190 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 191 {
 192    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 193    switch(shader)
 194    {
 195    case PIPE_SHADER_FRAGMENT:
 196       return tgsi_exec_get_shader_param(param);
 197    case PIPE_SHADER_VERTEX:
 198    case PIPE_SHADER_GEOMETRY:
 199       switch (param) {
 200       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 201          if (sp_screen->use_llvm)
 202             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 203             return 0;
 204          else
 205             return PIPE_MAX_SAMPLERS;
 206       default:
 207          if (sp_screen->use_llvm)
 208             return draw_get_shader_param(shader, param);
 209          else
 210             return draw_get_shader_param_no_llvm(shader, param);
 211       }
 212    default:
 213       return 0;
 214    }
 215 }
 216
 217 static float
 218 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 219 {
 220    switch (param) {
 221    case PIPE_CAPF_MAX_LINE_WIDTH:
 222       /* fall-through */
 223    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 224       return 255.0; /* arbitrary */
 225    case PIPE_CAPF_MAX_POINT_WIDTH:
 226       /* fall-through */
 227    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 228       return 255.0; /* arbitrary */
 229    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 230       return 16.0;
 231    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 232       return 16.0; /* arbitrary */
 233    case PIPE_CAPF_GUARD_BAND_LEFT:
 234    case PIPE_CAPF_GUARD_BAND_TOP:
 235    case PIPE_CAPF_GUARD_BAND_RIGHT:
 236    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 237       return 0.0;
 238    }
 239    /* should only get here on unhandled cases */
 240    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 241    return 0.0;
 242 }
 243
 244 static int
 245 softpipe_get_video_param(struct pipe_screen *screen,
 246                          enum pipe_video_profile profile,
 247                          enum pipe_video_cap param)
 248 {
 249    switch (param) {
 250    case PIPE_VIDEO_CAP_SUPPORTED:
 251        return vl_profile_supported(screen, profile);
 252    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 253       return 0;
 254    case PIPE_VIDEO_CAP_MAX_WIDTH:
 255    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 256       return vl_video_buffer_max_size(screen);
 257    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 258       return PIPE_FORMAT_NV12;
 259    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 260       return false;
 261    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 262       return false;
 263    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 264       return true;
 265    default:
 266       return 0;
 267    }
 268 }
 269
 270 /**
 271  * Query format support for creating a texture, drawing surface, etc.
 272  * \param format  the format to test
 273  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 274  */
 275 static boolean
 276 softpipe_is_format_supported( struct pipe_screen *screen,
 277                               enum pipe_format format,
 278                               enum pipe_texture_target target,
 279                               unsigned sample_count,
 280                               unsigned bind)
 281 {
 282    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 283    const struct util_format_description *format_desc;
 284
 285    assert(target == PIPE_BUFFER ||
 286           target == PIPE_TEXTURE_1D ||
 287           target == PIPE_TEXTURE_1D_ARRAY ||
 288           target == PIPE_TEXTURE_2D ||
 289           target == PIPE_TEXTURE_2D_ARRAY ||
 290           target == PIPE_TEXTURE_RECT ||
 291           target == PIPE_TEXTURE_3D ||
 292           target == PIPE_TEXTURE_CUBE ||
 293           target == PIPE_TEXTURE_CUBE_ARRAY);
 294
 295    format_desc = util_format_description(format);
 296    if (!format_desc)
 297       return FALSE;
 298
 299    if (sample_count > 1)
 300       return FALSE;
 301
 302    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 303                PIPE_BIND_SCANOUT |
 304                PIPE_BIND_SHARED)) {
 305       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 306          return FALSE;
 307    }
 308
 309    if (bind & PIPE_BIND_RENDER_TARGET) {
 310       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 311          return FALSE;
 312
 313       /*
 314        * Although possible, it is unnatural to render into compressed or YUV
 315        * surfaces. So disable these here to avoid going into weird paths
 316        * inside the state trackers.
 317        */
 318       if (format_desc->block.width != 1 ||
 319           format_desc->block.height != 1)
 320          return FALSE;
 321    }
 322
 323    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 324       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 325          return FALSE;
 326    }
 327
 328    /*
 329     * All other operations (sampling, transfer, etc).
 330     */
 331
 332    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 333       return util_format_s3tc_enabled;
 334    }
 335
 336    /*
 337     * Everything else should be supported by u_format.
 338     */
 339    return TRUE;
 340 }
 341
 342
 343 static void
 344 softpipe_destroy_screen( struct pipe_screen *screen )
 345 {
 346    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 347    struct sw_winsys *winsys = sp_screen->winsys;
 348
 349    if(winsys->destroy)
 350       winsys->destroy(winsys);
 351
 352    FREE(screen);
 353 }
 354
 355
 356 /* This is often overriden by the co-state tracker.
 357  */
 358 static void
 359 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 360                            struct pipe_resource *resource,
 361                            unsigned level, unsigned layer,
 362                            void *context_private)
 363 {
 364    struct softpipe_screen *screen = softpipe_screen(_screen);
 365    struct sw_winsys *winsys = screen->winsys;
 366    struct softpipe_resource *texture = softpipe_resource(resource);
 367
 368    assert(texture->dt);
 369    if (texture->dt)
 370       winsys->displaytarget_display(winsys, texture->dt, context_private);
 371 }
 372
 373 static uint64_t
 374 softpipe_get_timestamp(struct pipe_screen *_screen)
 375 {
 376    return os_time_get_nano();
 377 }
 378
 379 /**
 380  * Create a new pipe_screen object
 381  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 382  */
 383 struct pipe_screen *
 384 softpipe_create_screen(struct sw_winsys *winsys)
 385 {
 386    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 387
 388    if (!screen)
 389       return NULL;
 390
 391    screen->winsys = winsys;
 392
 393    screen->base.destroy = softpipe_destroy_screen;
 394
 395    screen->base.get_name = softpipe_get_name;
 396    screen->base.get_vendor = softpipe_get_vendor;
 397    screen->base.get_param = softpipe_get_param;
 398    screen->base.get_shader_param = softpipe_get_shader_param;
 399    screen->base.get_paramf = softpipe_get_paramf;
 400    screen->base.get_video_param = softpipe_get_video_param;
 401    screen->base.get_timestamp = softpipe_get_timestamp;
 402    screen->base.is_format_supported = softpipe_is_format_supported;
 403    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 404    screen->base.context_create = softpipe_create_context;
 405    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 406
 407    screen->use_llvm = debug_get_option_use_llvm();
 408
 409    util_format_s3tc_init();
 410
 411    softpipe_init_screen_texture_funcs(&screen->base);
 412    softpipe_init_screen_fence_funcs(&screen->base);
 413
 414    return &screen->base;
 415 }