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_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_MAX_TEXTURE_2D_LEVELS:
  96       return SP_MAX_TEXTURE_2D_LEVELS;
  97    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  98       return SP_MAX_TEXTURE_3D_LEVELS;
  99    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 100       return SP_MAX_TEXTURE_CUBE_LEVELS;
 101    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 102       return 1;
 103    case PIPE_CAP_INDEP_BLEND_ENABLE:
 104       return 1;
 105    case PIPE_CAP_INDEP_BLEND_FUNC:
 106       return 1;
 107    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 108    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 109    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 110    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 111       return 1;
 112    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 113       return 0;
 114    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 115       return PIPE_MAX_SO_BUFFERS;
 116    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 117    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 118       return 16*4;
 119    case PIPE_CAP_PRIMITIVE_RESTART:
 120       return 1;
 121    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 122       return 1;
 123    case PIPE_CAP_TGSI_INSTANCEID:
 124    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 125       return 1;
 126    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 127    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 128       return 1;
 129    case PIPE_CAP_SCALED_RESOLVE:
 130       return 0;
 131    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 132       return 256; /* for GL3 */
 133    case PIPE_CAP_MIN_TEXEL_OFFSET:
 134       return -8;
 135    case PIPE_CAP_MAX_TEXEL_OFFSET:
 136       return 7;
 137    case PIPE_CAP_CONDITIONAL_RENDER:
 138       return 1;
 139    case PIPE_CAP_TEXTURE_BARRIER:
 140       return 0;
 141    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 142    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 143    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 144       return 1;
 145    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 146       return 0;
 147    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 148       return 140;
 149    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 150       return 0;
 151    case PIPE_CAP_COMPUTE:
 152       return 0;
 153    case PIPE_CAP_USER_VERTEX_BUFFERS:
 154    case PIPE_CAP_USER_INDEX_BUFFERS:
 155    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 156    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 157       return 1;
 158    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 159       return 16;
 160    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 161    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 162    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 163    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 164    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 165    case PIPE_CAP_START_INSTANCE:
 166    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 167    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 168       return 0;
 169    case PIPE_CAP_QUERY_TIMESTAMP:
 170    case PIPE_CAP_CUBE_MAP_ARRAY:
 171       return 1;
 172    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 173       return 1;
 174    }
 175    /* should only get here on unhandled cases */
 176    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 177    return 0;
 178 }
 179
 180 static int
 181 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 182 {
 183    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 184    switch(shader)
 185    {
 186    case PIPE_SHADER_FRAGMENT:
 187       return tgsi_exec_get_shader_param(param);
 188    case PIPE_SHADER_VERTEX:
 189    case PIPE_SHADER_GEOMETRY:
 190       switch (param) {
 191       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 192          if (sp_screen->use_llvm)
 193             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 194             return 0;
 195          else
 196             return PIPE_MAX_SAMPLERS;
 197       default:
 198          if (sp_screen->use_llvm)
 199             return draw_get_shader_param(shader, param);
 200          else
 201             return draw_get_shader_param_no_llvm(shader, param);
 202       }
 203    default:
 204       return 0;
 205    }
 206 }
 207
 208 static float
 209 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 210 {
 211    switch (param) {
 212    case PIPE_CAPF_MAX_LINE_WIDTH:
 213       /* fall-through */
 214    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 215       return 255.0; /* arbitrary */
 216    case PIPE_CAPF_MAX_POINT_WIDTH:
 217       /* fall-through */
 218    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 219       return 255.0; /* arbitrary */
 220    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 221       return 16.0;
 222    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 223       return 16.0; /* arbitrary */
 224    case PIPE_CAPF_GUARD_BAND_LEFT:
 225    case PIPE_CAPF_GUARD_BAND_TOP:
 226    case PIPE_CAPF_GUARD_BAND_RIGHT:
 227    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 228       return 0.0;
 229    }
 230    /* should only get here on unhandled cases */
 231    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 232    return 0.0;
 233 }
 234
 235 static int
 236 softpipe_get_video_param(struct pipe_screen *screen,
 237                          enum pipe_video_profile profile,
 238                          enum pipe_video_cap param)
 239 {
 240    switch (param) {
 241    case PIPE_VIDEO_CAP_SUPPORTED:
 242        return vl_profile_supported(screen, profile);
 243    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 244       return 0;
 245    case PIPE_VIDEO_CAP_MAX_WIDTH:
 246    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 247       return vl_video_buffer_max_size(screen);
 248    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 249       return PIPE_FORMAT_NV12;
 250    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 251       return false;
 252    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 253       return false;
 254    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 255       return true;
 256    default:
 257       return 0;
 258    }
 259 }
 260
 261 /**
 262  * Query format support for creating a texture, drawing surface, etc.
 263  * \param format  the format to test
 264  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 265  */
 266 static boolean
 267 softpipe_is_format_supported( struct pipe_screen *screen,
 268                               enum pipe_format format,
 269                               enum pipe_texture_target target,
 270                               unsigned sample_count,
 271                               unsigned bind)
 272 {
 273    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 274    const struct util_format_description *format_desc;
 275
 276    assert(target == PIPE_BUFFER ||
 277           target == PIPE_TEXTURE_1D ||
 278           target == PIPE_TEXTURE_1D_ARRAY ||
 279           target == PIPE_TEXTURE_2D ||
 280           target == PIPE_TEXTURE_2D_ARRAY ||
 281           target == PIPE_TEXTURE_RECT ||
 282           target == PIPE_TEXTURE_3D ||
 283           target == PIPE_TEXTURE_CUBE ||
 284           target == PIPE_TEXTURE_CUBE_ARRAY);
 285
 286    format_desc = util_format_description(format);
 287    if (!format_desc)
 288       return FALSE;
 289
 290    if (sample_count > 1)
 291       return FALSE;
 292
 293    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 294                PIPE_BIND_SCANOUT |
 295                PIPE_BIND_SHARED)) {
 296       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 297          return FALSE;
 298    }
 299
 300    if (bind & PIPE_BIND_RENDER_TARGET) {
 301       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 302          return FALSE;
 303
 304       /*
 305        * Although possible, it is unnatural to render into compressed or YUV
 306        * surfaces. So disable these here to avoid going into weird paths
 307        * inside the state trackers.
 308        */
 309       if (format_desc->block.width != 1 ||
 310           format_desc->block.height != 1)
 311          return FALSE;
 312    }
 313
 314    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 315       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 316          return FALSE;
 317    }
 318
 319    /*
 320     * All other operations (sampling, transfer, etc).
 321     */
 322
 323    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 324       return util_format_s3tc_enabled;
 325    }
 326
 327    /*
 328     * Everything else should be supported by u_format.
 329     */
 330    return TRUE;
 331 }
 332
 333
 334 static void
 335 softpipe_destroy_screen( struct pipe_screen *screen )
 336 {
 337    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 338    struct sw_winsys *winsys = sp_screen->winsys;
 339
 340    if(winsys->destroy)
 341       winsys->destroy(winsys);
 342
 343    FREE(screen);
 344 }
 345
 346
 347 /* This is often overriden by the co-state tracker.
 348  */
 349 static void
 350 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 351                            struct pipe_resource *resource,
 352                            unsigned level, unsigned layer,
 353                            void *context_private)
 354 {
 355    struct softpipe_screen *screen = softpipe_screen(_screen);
 356    struct sw_winsys *winsys = screen->winsys;
 357    struct softpipe_resource *texture = softpipe_resource(resource);
 358
 359    assert(texture->dt);
 360    if (texture->dt)
 361       winsys->displaytarget_display(winsys, texture->dt, context_private);
 362 }
 363
 364 static uint64_t
 365 softpipe_get_timestamp(struct pipe_screen *_screen)
 366 {
 367    return os_time_get_nano();
 368 }
 369
 370 /**
 371  * Create a new pipe_screen object
 372  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 373  */
 374 struct pipe_screen *
 375 softpipe_create_screen(struct sw_winsys *winsys)
 376 {
 377    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 378
 379    if (!screen)
 380       return NULL;
 381
 382    screen->winsys = winsys;
 383
 384    screen->base.destroy = softpipe_destroy_screen;
 385
 386    screen->base.get_name = softpipe_get_name;
 387    screen->base.get_vendor = softpipe_get_vendor;
 388    screen->base.get_param = softpipe_get_param;
 389    screen->base.get_shader_param = softpipe_get_shader_param;
 390    screen->base.get_paramf = softpipe_get_paramf;
 391    screen->base.get_video_param = softpipe_get_video_param;
 392    screen->base.get_timestamp = softpipe_get_timestamp;
 393    screen->base.is_format_supported = softpipe_is_format_supported;
 394    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 395    screen->base.context_create = softpipe_create_context;
 396    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 397
 398    screen->use_llvm = debug_get_option_use_llvm();
 399
 400    util_format_s3tc_init();
 401
 402    softpipe_init_screen_texture_funcs(&screen->base);
 403    softpipe_init_screen_fence_funcs(&screen->base);
 404
 405    return &screen->base;
 406 }