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