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