src/gallium/drivers/softpipe/sp_screen.c

   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_time.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_screen.h"
  36 #include "draw/draw_context.h"
  37
  38 #include "state_tracker/sw_winsys.h"
  39 #include "tgsi/tgsi_exec.h"
  40
  41 #include "sp_texture.h"
  42 #include "sp_screen.h"
  43 #include "sp_context.h"
  44 #include "sp_fence.h"
  45 #include "sp_public.h"
  46
  47 DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
  48
  49 static const char *
  50 softpipe_get_vendor(struct pipe_screen *screen)
  51 {
  52    return "VMware, Inc.";
  53 }
  54
  55
  56 static const char *
  57 softpipe_get_name(struct pipe_screen *screen)
  58 {
  59    return "softpipe";
  60 }
  61
  62
  63 static int
  64 softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  65 {
  66    switch (param) {
  67    case PIPE_CAP_NPOT_TEXTURES:
  68    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  69       return 1;
  70    case PIPE_CAP_TWO_SIDED_STENCIL:
  71       return 1;
  72    case PIPE_CAP_SM3:
  73       return 1;
  74    case PIPE_CAP_ANISOTROPIC_FILTER:
  75       return 1;
  76    case PIPE_CAP_POINT_SPRITE:
  77       return 1;
  78    case PIPE_CAP_MAX_RENDER_TARGETS:
  79       return PIPE_MAX_COLOR_BUFS;
  80    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  81       return 1;
  82    case PIPE_CAP_OCCLUSION_QUERY:
  83       return 1;
  84    case PIPE_CAP_QUERY_TIME_ELAPSED:
  85       return 1;
  86    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
  87       return 1;
  88    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  89       return 1;
  90    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  91       return 1;
  92    case PIPE_CAP_TEXTURE_SWIZZLE:
  93       return 1;
  94    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
  95       return 0;
  96    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  97       return SP_MAX_TEXTURE_2D_LEVELS;
  98    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  99       return SP_MAX_TEXTURE_3D_LEVELS;
 100    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 101       return SP_MAX_TEXTURE_CUBE_LEVELS;
 102    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 103       return 1;
 104    case PIPE_CAP_INDEP_BLEND_ENABLE:
 105       return 1;
 106    case PIPE_CAP_INDEP_BLEND_FUNC:
 107       return 1;
 108    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 109    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 110    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 111    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 112       return 1;
 113    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 114       return 0;
 115    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 116       return PIPE_MAX_SO_BUFFERS;
 117    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 118    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 119       return 16*4;
 120    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 121    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 122       return 0;
 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_MAX_TEXTURE_ARRAY_LAYERS:
 134       return 256; /* for GL3 */
 135    case PIPE_CAP_MIN_TEXEL_OFFSET:
 136       return -8;
 137    case PIPE_CAP_MAX_TEXEL_OFFSET:
 138       return 7;
 139    case PIPE_CAP_CONDITIONAL_RENDER:
 140       return 1;
 141    case PIPE_CAP_TEXTURE_BARRIER:
 142       return 0;
 143    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 144    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 145    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 146       return 1;
 147    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 148       return 0;
 149    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 150       return 140;
 151    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 152       return 0;
 153    case PIPE_CAP_COMPUTE:
 154       return 0;
 155    case PIPE_CAP_USER_VERTEX_BUFFERS:
 156    case PIPE_CAP_USER_INDEX_BUFFERS:
 157    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 158    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 159       return 1;
 160    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 161       return 16;
 162    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 163    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 164    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 165    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 166    case PIPE_CAP_START_INSTANCE:
 167    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 168       return 0;
 169    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 170       return 64;
 171    case PIPE_CAP_QUERY_TIMESTAMP:
 172    case PIPE_CAP_CUBE_MAP_ARRAY:
 173       return 1;
 174    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 175       return 1;
 176    case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 177       return 65536;
 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    case PIPE_CAP_MAX_VIEWPORTS:
 184       return 1;
 185    case PIPE_CAP_ENDIANNESS:
 186       return PIPE_ENDIAN_NATIVE;
 187    case PIPE_CAP_TGSI_VS_LAYER:
 188    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 189    case PIPE_CAP_TEXTURE_GATHER_SM5:
 190    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 191    case PIPE_CAP_TEXTURE_QUERY_LOD:
 192       return 0;
 193    case PIPE_CAP_FAKE_SW_MSAA:
 194       return 1;
 195    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 196    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 197       return 0;
 198    }
 199    /* should only get here on unhandled cases */
 200    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 201    return 0;
 202 }
 203
 204 static int
 205 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 206 {
 207    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 208    switch(shader)
 209    {
 210    case PIPE_SHADER_FRAGMENT:
 211       return tgsi_exec_get_shader_param(param);
 212    case PIPE_SHADER_VERTEX:
 213    case PIPE_SHADER_GEOMETRY:
 214       switch (param) {
 215       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 216       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 217          if (sp_screen->use_llvm)
 218             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 219             return 0;
 220          else
 221             return PIPE_MAX_SAMPLERS;
 222       default:
 223          if (sp_screen->use_llvm)
 224             return draw_get_shader_param(shader, param);
 225          else
 226             return draw_get_shader_param_no_llvm(shader, param);
 227       }
 228    default:
 229       return 0;
 230    }
 231 }
 232
 233 static float
 234 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 235 {
 236    switch (param) {
 237    case PIPE_CAPF_MAX_LINE_WIDTH:
 238       /* fall-through */
 239    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 240       return 255.0; /* arbitrary */
 241    case PIPE_CAPF_MAX_POINT_WIDTH:
 242       /* fall-through */
 243    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 244       return 255.0; /* arbitrary */
 245    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 246       return 16.0;
 247    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 248       return 16.0; /* arbitrary */
 249    case PIPE_CAPF_GUARD_BAND_LEFT:
 250    case PIPE_CAPF_GUARD_BAND_TOP:
 251    case PIPE_CAPF_GUARD_BAND_RIGHT:
 252    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 253       return 0.0;
 254    }
 255    /* should only get here on unhandled cases */
 256    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 257    return 0.0;
 258 }
 259
 260 /**
 261  * Query format support for creating a texture, drawing surface, etc.
 262  * \param format  the format to test
 263  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 264  */
 265 static boolean
 266 softpipe_is_format_supported( struct pipe_screen *screen,
 267                               enum pipe_format format,
 268                               enum pipe_texture_target target,
 269                               unsigned sample_count,
 270                               unsigned bind)
 271 {
 272    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 273    const struct util_format_description *format_desc;
 274
 275    assert(target == PIPE_BUFFER ||
 276           target == PIPE_TEXTURE_1D ||
 277           target == PIPE_TEXTURE_1D_ARRAY ||
 278           target == PIPE_TEXTURE_2D ||
 279           target == PIPE_TEXTURE_2D_ARRAY ||
 280           target == PIPE_TEXTURE_RECT ||
 281           target == PIPE_TEXTURE_3D ||
 282           target == PIPE_TEXTURE_CUBE ||
 283           target == PIPE_TEXTURE_CUBE_ARRAY);
 284
 285    format_desc = util_format_description(format);
 286    if (!format_desc)
 287       return FALSE;
 288
 289    if (sample_count > 1)
 290       return FALSE;
 291
 292    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 293                PIPE_BIND_SCANOUT |
 294                PIPE_BIND_SHARED)) {
 295       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 296          return FALSE;
 297    }
 298
 299    if (bind & PIPE_BIND_RENDER_TARGET) {
 300       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 301          return FALSE;
 302
 303       /*
 304        * Although possible, it is unnatural to render into compressed or YUV
 305        * surfaces. So disable these here to avoid going into weird paths
 306        * inside the state trackers.
 307        */
 308       if (format_desc->block.width != 1 ||
 309           format_desc->block.height != 1)
 310          return FALSE;
 311    }
 312
 313    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 314       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 315          return FALSE;
 316    }
 317
 318    /*
 319     * All other operations (sampling, transfer, etc).
 320     */
 321
 322    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 323       return util_format_s3tc_enabled;
 324    }
 325
 326    /*
 327     * Everything else should be supported by u_format.
 328     */
 329    return TRUE;
 330 }
 331
 332
 333 static void
 334 softpipe_destroy_screen( struct pipe_screen *screen )
 335 {
 336    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 337    struct sw_winsys *winsys = sp_screen->winsys;
 338
 339    if(winsys->destroy)
 340       winsys->destroy(winsys);
 341
 342    FREE(screen);
 343 }
 344
 345
 346 /* This is often overriden by the co-state tracker.
 347  */
 348 static void
 349 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 350                            struct pipe_resource *resource,
 351                            unsigned level, unsigned layer,
 352                            void *context_private,
 353                            struct pipe_box *sub_box)
 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, sub_box);
 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_timestamp = softpipe_get_timestamp;
 392    screen->base.is_format_supported = softpipe_is_format_supported;
 393    screen->base.context_create = softpipe_create_context;
 394    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 395
 396    screen->use_llvm = debug_get_option_use_llvm();
 397
 398    util_format_s3tc_init();
 399
 400    softpipe_init_screen_texture_funcs(&screen->base);
 401    softpipe_init_screen_fence_funcs(&screen->base);
 402
 403    return &screen->base;
 404 }