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_TIMER_QUERY:
  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_DEPTHSTENCIL_CLEAR_SEPARATE:
 122       return 0;
 123    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 124       return 1;
 125    case PIPE_CAP_TGSI_INSTANCEID:
 126    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 127       return 1;
 128    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 129    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 130       return 0;
 131    case PIPE_CAP_SCALED_RESOLVE:
 132       return 0;
 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 130;
 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       return 1;
 159    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 160       return 16;
 161    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 162    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 163    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 164    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 165    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 166    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 167    case PIPE_CAP_START_INSTANCE:
 168       return 0;
 169    case PIPE_CAP_QUERY_TIMESTAMP:
 170       return 1;
 171    }
 172    /* should only get here on unhandled cases */
 173    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 174    return 0;
 175 }
 176
 177 static int
 178 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 179 {
 180    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 181    switch(shader)
 182    {
 183    case PIPE_SHADER_FRAGMENT:
 184       return tgsi_exec_get_shader_param(param);
 185    case PIPE_SHADER_VERTEX:
 186    case PIPE_SHADER_GEOMETRY:
 187       switch (param) {
 188       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 189          if (sp_screen->use_llvm)
 190             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 191             return 0;
 192          else
 193             return PIPE_MAX_SAMPLERS;
 194       default:
 195          if (sp_screen->use_llvm)
 196             return draw_get_shader_param(shader, param);
 197          else
 198             return draw_get_shader_param_no_llvm(shader, param);
 199       }
 200    default:
 201       return 0;
 202    }
 203 }
 204
 205 static float
 206 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 207 {
 208    switch (param) {
 209    case PIPE_CAPF_MAX_LINE_WIDTH:
 210       /* fall-through */
 211    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 212       return 255.0; /* arbitrary */
 213    case PIPE_CAPF_MAX_POINT_WIDTH:
 214       /* fall-through */
 215    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 216       return 255.0; /* arbitrary */
 217    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 218       return 16.0;
 219    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 220       return 16.0; /* arbitrary */
 221    case PIPE_CAPF_GUARD_BAND_LEFT:
 222    case PIPE_CAPF_GUARD_BAND_TOP:
 223    case PIPE_CAPF_GUARD_BAND_RIGHT:
 224    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 225       return 0.0;
 226    }
 227    /* should only get here on unhandled cases */
 228    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 229    return 0.0;
 230 }
 231
 232 static int
 233 softpipe_get_video_param(struct pipe_screen *screen,
 234                          enum pipe_video_profile profile,
 235                          enum pipe_video_cap param)
 236 {
 237    switch (param) {
 238    case PIPE_VIDEO_CAP_SUPPORTED:
 239        return vl_profile_supported(screen, profile);
 240    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 241       return 0;
 242    case PIPE_VIDEO_CAP_MAX_WIDTH:
 243    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 244       return vl_video_buffer_max_size(screen);
 245    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 246       return PIPE_FORMAT_NV12;
 247    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 248       return false;
 249    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 250       return false;
 251    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 252       return true;
 253    default:
 254       return 0;
 255    }
 256 }
 257
 258 /**
 259  * Query format support for creating a texture, drawing surface, etc.
 260  * \param format  the format to test
 261  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 262  */
 263 static boolean
 264 softpipe_is_format_supported( struct pipe_screen *screen,
 265                               enum pipe_format format,
 266                               enum pipe_texture_target target,
 267                               unsigned sample_count,
 268                               unsigned bind)
 269 {
 270    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 271    const struct util_format_description *format_desc;
 272
 273    assert(target == PIPE_BUFFER ||
 274           target == PIPE_TEXTURE_1D ||
 275           target == PIPE_TEXTURE_1D_ARRAY ||
 276           target == PIPE_TEXTURE_2D ||
 277           target == PIPE_TEXTURE_2D_ARRAY ||
 278           target == PIPE_TEXTURE_RECT ||
 279           target == PIPE_TEXTURE_3D ||
 280           target == PIPE_TEXTURE_CUBE);
 281
 282    format_desc = util_format_description(format);
 283    if (!format_desc)
 284       return FALSE;
 285
 286    if (sample_count > 1)
 287       return FALSE;
 288
 289    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 290                PIPE_BIND_SCANOUT |
 291                PIPE_BIND_SHARED)) {
 292       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 293          return FALSE;
 294    }
 295
 296    if (bind & PIPE_BIND_RENDER_TARGET) {
 297       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 298          return FALSE;
 299
 300       /*
 301        * Although possible, it is unnatural to render into compressed or YUV
 302        * surfaces. So disable these here to avoid going into weird paths
 303        * inside the state trackers.
 304        */
 305       if (format_desc->block.width != 1 ||
 306           format_desc->block.height != 1)
 307          return FALSE;
 308    }
 309
 310    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 311       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 312          return FALSE;
 313    }
 314
 315    /*
 316     * All other operations (sampling, transfer, etc).
 317     */
 318
 319    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 320       return util_format_s3tc_enabled;
 321    }
 322
 323    /*
 324     * Everything else should be supported by u_format.
 325     */
 326    return TRUE;
 327 }
 328
 329
 330 static void
 331 softpipe_destroy_screen( struct pipe_screen *screen )
 332 {
 333    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 334    struct sw_winsys *winsys = sp_screen->winsys;
 335
 336    if(winsys->destroy)
 337       winsys->destroy(winsys);
 338
 339    FREE(screen);
 340 }
 341
 342
 343 /* This is often overriden by the co-state tracker.
 344  */
 345 static void
 346 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 347                            struct pipe_resource *resource,
 348                            unsigned level, unsigned layer,
 349                            void *context_private)
 350 {
 351    struct softpipe_screen *screen = softpipe_screen(_screen);
 352    struct sw_winsys *winsys = screen->winsys;
 353    struct softpipe_resource *texture = softpipe_resource(resource);
 354
 355    assert(texture->dt);
 356    if (texture->dt)
 357       winsys->displaytarget_display(winsys, texture->dt, context_private);
 358 }
 359
 360 static uint64_t
 361 softpipe_get_timestamp(struct pipe_screen *_screen)
 362 {
 363    return os_time_get()*1000;
 364 }
 365
 366 /**
 367  * Create a new pipe_screen object
 368  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 369  */
 370 struct pipe_screen *
 371 softpipe_create_screen(struct sw_winsys *winsys)
 372 {
 373    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 374
 375    if (!screen)
 376       return NULL;
 377
 378    screen->winsys = winsys;
 379
 380    screen->base.destroy = softpipe_destroy_screen;
 381
 382    screen->base.get_name = softpipe_get_name;
 383    screen->base.get_vendor = softpipe_get_vendor;
 384    screen->base.get_param = softpipe_get_param;
 385    screen->base.get_shader_param = softpipe_get_shader_param;
 386    screen->base.get_paramf = softpipe_get_paramf;
 387    screen->base.get_video_param = softpipe_get_video_param;
 388    screen->base.get_timestamp = softpipe_get_timestamp;
 389    screen->base.is_format_supported = softpipe_is_format_supported;
 390    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 391    screen->base.context_create = softpipe_create_context;
 392    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 393
 394    screen->use_llvm = debug_get_option_use_llvm();
 395
 396    util_format_s3tc_init();
 397
 398    softpipe_init_screen_texture_funcs(&screen->base);
 399    softpipe_init_screen_fence_funcs(&screen->base);
 400
 401    return &screen->base;
 402 }