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 "pipe/p_defines.h"
  34 #include "pipe/p_screen.h"
  35 #include "draw/draw_context.h"
  36 #include "vl/vl_decoder.h"
  37 #include "vl/vl_video_buffer.h"
  38
  39 #include "state_tracker/sw_winsys.h"
  40 #include "tgsi/tgsi_exec.h"
  41
  42 #include "sp_texture.h"
  43 #include "sp_screen.h"
  44 #include "sp_context.h"
  45 #include "sp_fence.h"
  46 #include "sp_public.h"
  47
  48 DEBUG_GET_ONCE_BOOL_OPTION(use_llvm, "SOFTPIPE_USE_LLVM", FALSE)
  49
  50 static const char *
  51 softpipe_get_vendor(struct pipe_screen *screen)
  52 {
  53    return "VMware, Inc.";
  54 }
  55
  56
  57 static const char *
  58 softpipe_get_name(struct pipe_screen *screen)
  59 {
  60    return "softpipe";
  61 }
  62
  63
  64 static int
  65 softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  66 {
  67    switch (param) {
  68    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  69       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  70    case PIPE_CAP_NPOT_TEXTURES:
  71       return 1;
  72    case PIPE_CAP_TWO_SIDED_STENCIL:
  73       return 1;
  74    case PIPE_CAP_SM3:
  75       return 1;
  76    case PIPE_CAP_ANISOTROPIC_FILTER:
  77       return 1;
  78    case PIPE_CAP_POINT_SPRITE:
  79       return 1;
  80    case PIPE_CAP_MAX_RENDER_TARGETS:
  81       return PIPE_MAX_COLOR_BUFS;
  82    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
  83       return 1;
  84    case PIPE_CAP_OCCLUSION_QUERY:
  85       return 1;
  86    case PIPE_CAP_TIMER_QUERY:
  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_MAX_TEXTURE_2D_LEVELS:
  95       return SP_MAX_TEXTURE_2D_LEVELS;
  96    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  97       return SP_MAX_TEXTURE_3D_LEVELS;
  98    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  99       return SP_MAX_TEXTURE_CUBE_LEVELS;
 100    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 101       return 1;
 102    case PIPE_CAP_INDEP_BLEND_ENABLE:
 103       return 1;
 104    case PIPE_CAP_INDEP_BLEND_FUNC:
 105       return 1;
 106    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 107    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 108    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 109    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 110       return 1;
 111    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 112       return 0;
 113    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 114       return PIPE_MAX_SO_BUFFERS;
 115    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 116    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 117       return 16*4;
 118    case PIPE_CAP_PRIMITIVE_RESTART:
 119       return 1;
 120    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 121       return 0;
 122    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 123       return 1;
 124    case PIPE_CAP_TGSI_INSTANCEID:
 125    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 126       return 1;
 127    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 128    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 129       return 0;
 130    case PIPE_CAP_SCALED_RESOLVE:
 131       return 0;
 132    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 133       return 256; /* for GL3 */
 134    case PIPE_CAP_MIN_TEXEL_OFFSET:
 135       return -8;
 136    case PIPE_CAP_MAX_TEXEL_OFFSET:
 137       return 7;
 138    case PIPE_CAP_CONDITIONAL_RENDER:
 139       return 1;
 140    case PIPE_CAP_TEXTURE_BARRIER:
 141       return 0;
 142    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 143    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: /* draw module */
 144    case PIPE_CAP_VERTEX_COLOR_CLAMPED: /* draw module */
 145       return 1;
 146    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 147       return 0;
 148    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 149       return 130;
 150    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 151       return 0;
 152    case PIPE_CAP_COMPUTE:
 153       return 0;
 154    case PIPE_CAP_USER_VERTEX_BUFFERS:
 155    case PIPE_CAP_USER_INDEX_BUFFERS:
 156    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 157       return 1;
 158    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 159       return 16;
 160    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 161    case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 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       return 0;
 168    }
 169    /* should only get here on unhandled cases */
 170    debug_printf("Unexpected PIPE_CAP %d query\n", param);
 171    return 0;
 172 }
 173
 174 static int
 175 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 176 {
 177 #ifdef HAVE_LLVM
 178    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 179 #endif
 180    switch(shader)
 181    {
 182    case PIPE_SHADER_FRAGMENT:
 183       return tgsi_exec_get_shader_param(param);
 184    case PIPE_SHADER_VERTEX:
 185    case PIPE_SHADER_GEOMETRY:
 186       switch (param) {
 187       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 188 #ifdef HAVE_LLVM
 189          if (sp_screen->use_llvm)
 190             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 191             return 0;
 192 #endif
 193          return PIPE_MAX_VERTEX_SAMPLERS;
 194       case PIPE_SHADER_CAP_INTEGERS:
 195 #ifdef HAVE_LLVM /* gallivm doesn't support integers yet */
 196          if (sp_screen->use_llvm)
 197             return 0;
 198 #endif
 199          /* fallthrough */
 200       default:
 201          return draw_get_shader_param(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
 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 {
 354    struct softpipe_screen *screen = softpipe_screen(_screen);
 355    struct sw_winsys *winsys = screen->winsys;
 356    struct softpipe_resource *texture = softpipe_resource(resource);
 357
 358    assert(texture->dt);
 359    if (texture->dt)
 360       winsys->displaytarget_display(winsys, texture->dt, context_private);
 361 }
 362
 363 /**
 364  * Create a new pipe_screen object
 365  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 366  */
 367 struct pipe_screen *
 368 softpipe_create_screen(struct sw_winsys *winsys)
 369 {
 370    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 371
 372    if (!screen)
 373       return NULL;
 374
 375    screen->winsys = winsys;
 376
 377    screen->base.destroy = softpipe_destroy_screen;
 378
 379    screen->base.get_name = softpipe_get_name;
 380    screen->base.get_vendor = softpipe_get_vendor;
 381    screen->base.get_param = softpipe_get_param;
 382    screen->base.get_shader_param = softpipe_get_shader_param;
 383    screen->base.get_paramf = softpipe_get_paramf;
 384    screen->base.get_video_param = softpipe_get_video_param;
 385    screen->base.is_format_supported = softpipe_is_format_supported;
 386    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 387    screen->base.context_create = softpipe_create_context;
 388    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 389
 390    screen->use_llvm = debug_get_option_use_llvm();
 391
 392    util_format_s3tc_init();
 393
 394    softpipe_init_screen_texture_funcs(&screen->base);
 395    softpipe_init_screen_fence_funcs(&screen->base);
 396
 397    return &screen->base;
 398 }