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    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 169    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 170       return 0;
 171    case PIPE_CAP_QUERY_TIMESTAMP:
 172       return 1;
 173    }
 174    /* should only get here on unhandled cases */
 175    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 176    return 0;
 177 }
 178
 179 static int
 180 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 181 {
 182    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 183    switch(shader)
 184    {
 185    case PIPE_SHADER_FRAGMENT:
 186       return tgsi_exec_get_shader_param(param);
 187    case PIPE_SHADER_VERTEX:
 188    case PIPE_SHADER_GEOMETRY:
 189       switch (param) {
 190       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 191          if (sp_screen->use_llvm)
 192             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 193             return 0;
 194          else
 195             return PIPE_MAX_SAMPLERS;
 196       default:
 197          if (sp_screen->use_llvm)
 198             return draw_get_shader_param(shader, param);
 199          else
 200             return draw_get_shader_param_no_llvm(shader, param);
 201       }
 202    default:
 203       return 0;
 204    }
 205 }
 206
 207 static float
 208 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 209 {
 210    switch (param) {
 211    case PIPE_CAPF_MAX_LINE_WIDTH:
 212       /* fall-through */
 213    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 214       return 255.0; /* arbitrary */
 215    case PIPE_CAPF_MAX_POINT_WIDTH:
 216       /* fall-through */
 217    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 218       return 255.0; /* arbitrary */
 219    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 220       return 16.0;
 221    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 222       return 16.0; /* arbitrary */
 223    case PIPE_CAPF_GUARD_BAND_LEFT:
 224    case PIPE_CAPF_GUARD_BAND_TOP:
 225    case PIPE_CAPF_GUARD_BAND_RIGHT:
 226    case PIPE_CAPF_GUARD_BAND_BOTTOM:
 227       return 0.0;
 228    }
 229    /* should only get here on unhandled cases */
 230    debug_printf("Unexpected PIPE_CAPF %d query\n", param);
 231    return 0.0;
 232 }
 233
 234 static int
 235 softpipe_get_video_param(struct pipe_screen *screen,
 236                          enum pipe_video_profile profile,
 237                          enum pipe_video_cap param)
 238 {
 239    switch (param) {
 240    case PIPE_VIDEO_CAP_SUPPORTED:
 241        return vl_profile_supported(screen, profile);
 242    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 243       return 0;
 244    case PIPE_VIDEO_CAP_MAX_WIDTH:
 245    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 246       return vl_video_buffer_max_size(screen);
 247    case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 248       return PIPE_FORMAT_NV12;
 249    case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 250       return false;
 251    case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 252       return false;
 253    case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 254       return true;
 255    default:
 256       return 0;
 257    }
 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
 284    format_desc = util_format_description(format);
 285    if (!format_desc)
 286       return FALSE;
 287
 288    if (sample_count > 1)
 289       return FALSE;
 290
 291    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 292                PIPE_BIND_SCANOUT |
 293                PIPE_BIND_SHARED)) {
 294       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 295          return FALSE;
 296    }
 297
 298    if (bind & PIPE_BIND_RENDER_TARGET) {
 299       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 300          return FALSE;
 301
 302       /*
 303        * Although possible, it is unnatural to render into compressed or YUV
 304        * surfaces. So disable these here to avoid going into weird paths
 305        * inside the state trackers.
 306        */
 307       if (format_desc->block.width != 1 ||
 308           format_desc->block.height != 1)
 309          return FALSE;
 310    }
 311
 312    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 313       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 314          return FALSE;
 315    }
 316
 317    /*
 318     * All other operations (sampling, transfer, etc).
 319     */
 320
 321    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 322       return util_format_s3tc_enabled;
 323    }
 324
 325    /*
 326     * Everything else should be supported by u_format.
 327     */
 328    return TRUE;
 329 }
 330
 331
 332 static void
 333 softpipe_destroy_screen( struct pipe_screen *screen )
 334 {
 335    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 336    struct sw_winsys *winsys = sp_screen->winsys;
 337
 338    if(winsys->destroy)
 339       winsys->destroy(winsys);
 340
 341    FREE(screen);
 342 }
 343
 344
 345 /* This is often overriden by the co-state tracker.
 346  */
 347 static void
 348 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 349                            struct pipe_resource *resource,
 350                            unsigned level, unsigned layer,
 351                            void *context_private)
 352 {
 353    struct softpipe_screen *screen = softpipe_screen(_screen);
 354    struct sw_winsys *winsys = screen->winsys;
 355    struct softpipe_resource *texture = softpipe_resource(resource);
 356
 357    assert(texture->dt);
 358    if (texture->dt)
 359       winsys->displaytarget_display(winsys, texture->dt, context_private);
 360 }
 361
 362 static uint64_t
 363 softpipe_get_timestamp(struct pipe_screen *_screen)
 364 {
 365    return os_time_get()*1000;
 366 }
 367
 368 /**
 369  * Create a new pipe_screen object
 370  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 371  */
 372 struct pipe_screen *
 373 softpipe_create_screen(struct sw_winsys *winsys)
 374 {
 375    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 376
 377    if (!screen)
 378       return NULL;
 379
 380    screen->winsys = winsys;
 381
 382    screen->base.destroy = softpipe_destroy_screen;
 383
 384    screen->base.get_name = softpipe_get_name;
 385    screen->base.get_vendor = softpipe_get_vendor;
 386    screen->base.get_param = softpipe_get_param;
 387    screen->base.get_shader_param = softpipe_get_shader_param;
 388    screen->base.get_paramf = softpipe_get_paramf;
 389    screen->base.get_video_param = softpipe_get_video_param;
 390    screen->base.get_timestamp = softpipe_get_timestamp;
 391    screen->base.is_format_supported = softpipe_is_format_supported;
 392    screen->base.is_video_format_supported = vl_video_buffer_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 }