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_OCCLUSION_QUERY:
  83       return 1;
  84    case PIPE_CAP_TIMER_QUERY:
  85       return 1;
  86    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  87       return 1;
  88    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  89       return 1;
  90    case PIPE_CAP_TEXTURE_SWIZZLE:
  91       return 1;
  92    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  93       return SP_MAX_TEXTURE_2D_LEVELS;
  94    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  95       return SP_MAX_TEXTURE_3D_LEVELS;
  96    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  97       return SP_MAX_TEXTURE_2D_LEVELS;
  98    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  99       return 1;
 100    case PIPE_CAP_INDEP_BLEND_ENABLE:
 101       return 1;
 102    case PIPE_CAP_INDEP_BLEND_FUNC:
 103       return 1;
 104    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 105    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 106    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 107    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 108       return 1;
 109    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 110       return PIPE_MAX_SO_BUFFERS;
 111    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 112    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 113       return 16*4;
 114    case PIPE_CAP_PRIMITIVE_RESTART:
 115       return 1;
 116    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 117       return 0;
 118    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 119       return 1;
 120    case PIPE_CAP_TGSI_INSTANCEID:
 121    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 122       return 1;
 123    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 124       return 256; /* for GL3 */
 125    case PIPE_CAP_MIN_TEXEL_OFFSET:
 126       return -8;
 127    case PIPE_CAP_MAX_TEXEL_OFFSET:
 128       return 7;
 129    case PIPE_CAP_CONDITIONAL_RENDER:
 130       return 1;
 131    case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:
 132       return 1;
 133    default:
 134       return 0;
 135    }
 136 }
 137
 138 static int
 139 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 140 {
 141    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 142    switch(shader)
 143    {
 144    case PIPE_SHADER_FRAGMENT:
 145       return tgsi_exec_get_shader_param(param);
 146    case PIPE_SHADER_VERTEX:
 147    case PIPE_SHADER_GEOMETRY:
 148       switch (param) {
 149       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 150 #ifdef HAVE_LLVM
 151          if (sp_screen->use_llvm)
 152             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 153             return 0;
 154 #endif
 155          return PIPE_MAX_VERTEX_SAMPLERS;
 156       case PIPE_SHADER_CAP_INTEGERS:
 157 #ifdef HAVE_LLVM /* gallivm doesn't support integers yet */
 158          if (sp_screen->use_llvm)
 159             return 0;
 160 #endif
 161          /* fallthrough */
 162       default:
 163          return draw_get_shader_param(shader, param);
 164       }
 165    default:
 166       return 0;
 167    }
 168 }
 169
 170 static float
 171 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 172 {
 173    switch (param) {
 174    case PIPE_CAPF_MAX_LINE_WIDTH:
 175       /* fall-through */
 176    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 177       return 255.0; /* arbitrary */
 178    case PIPE_CAPF_MAX_POINT_WIDTH:
 179       /* fall-through */
 180    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 181       return 255.0; /* arbitrary */
 182    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 183       return 16.0;
 184    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 185       return 16.0; /* arbitrary */
 186    default:
 187       return 0;
 188    }
 189 }
 190
 191 static int
 192 softpipe_get_video_param(struct pipe_screen *screen,
 193                          enum pipe_video_profile profile,
 194                          enum pipe_video_cap param)
 195 {
 196    switch (param) {
 197    case PIPE_VIDEO_CAP_SUPPORTED:
 198        return vl_profile_supported(screen, profile);
 199    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 200       return 0;
 201    case PIPE_VIDEO_CAP_MAX_WIDTH:
 202    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 203       return vl_video_buffer_max_size(screen);
 204    default:
 205       return 0;
 206    }
 207 }
 208
 209 /**
 210  * Query format support for creating a texture, drawing surface, etc.
 211  * \param format  the format to test
 212  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 213  */
 214 static boolean
 215 softpipe_is_format_supported( struct pipe_screen *screen,
 216                               enum pipe_format format,
 217                               enum pipe_texture_target target,
 218                               unsigned sample_count,
 219                               unsigned bind)
 220 {
 221    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 222    const struct util_format_description *format_desc;
 223
 224    assert(target == PIPE_BUFFER ||
 225           target == PIPE_TEXTURE_1D ||
 226           target == PIPE_TEXTURE_1D_ARRAY ||
 227           target == PIPE_TEXTURE_2D ||
 228           target == PIPE_TEXTURE_2D_ARRAY ||
 229           target == PIPE_TEXTURE_RECT ||
 230           target == PIPE_TEXTURE_3D ||
 231           target == PIPE_TEXTURE_CUBE);
 232
 233    format_desc = util_format_description(format);
 234    if (!format_desc)
 235       return FALSE;
 236
 237    if (sample_count > 1)
 238       return FALSE;
 239
 240    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 241                PIPE_BIND_SCANOUT |
 242                PIPE_BIND_SHARED)) {
 243       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 244          return FALSE;
 245    }
 246
 247    if (bind & PIPE_BIND_RENDER_TARGET) {
 248       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 249          return FALSE;
 250
 251       /*
 252        * Although possible, it is unnatural to render into compressed or YUV
 253        * surfaces. So disable these here to avoid going into weird paths
 254        * inside the state trackers.
 255        */
 256       if (format_desc->block.width != 1 ||
 257           format_desc->block.height != 1)
 258          return FALSE;
 259    }
 260
 261    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 262       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 263          return FALSE;
 264    }
 265
 266    /*
 267     * All other operations (sampling, transfer, etc).
 268     */
 269
 270    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 271       return util_format_s3tc_enabled;
 272    }
 273
 274    /*
 275     * Everything else should be supported by u_format.
 276     */
 277    return TRUE;
 278 }
 279
 280
 281 static void
 282 softpipe_destroy_screen( struct pipe_screen *screen )
 283 {
 284    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 285    struct sw_winsys *winsys = sp_screen->winsys;
 286
 287    if(winsys->destroy)
 288       winsys->destroy(winsys);
 289
 290    FREE(screen);
 291 }
 292
 293
 294 /* This is often overriden by the co-state tracker.
 295  */
 296 static void
 297 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 298                            struct pipe_resource *resource,
 299                            unsigned level, unsigned layer,
 300                            void *context_private)
 301 {
 302    struct softpipe_screen *screen = softpipe_screen(_screen);
 303    struct sw_winsys *winsys = screen->winsys;
 304    struct softpipe_resource *texture = softpipe_resource(resource);
 305
 306    assert(texture->dt);
 307    if (texture->dt)
 308       winsys->displaytarget_display(winsys, texture->dt, context_private);
 309 }
 310
 311 /**
 312  * Create a new pipe_screen object
 313  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 314  */
 315 struct pipe_screen *
 316 softpipe_create_screen(struct sw_winsys *winsys)
 317 {
 318    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 319
 320    if (!screen)
 321       return NULL;
 322
 323    screen->winsys = winsys;
 324
 325    screen->base.winsys = NULL;
 326    screen->base.destroy = softpipe_destroy_screen;
 327
 328    screen->base.get_name = softpipe_get_name;
 329    screen->base.get_vendor = softpipe_get_vendor;
 330    screen->base.get_param = softpipe_get_param;
 331    screen->base.get_shader_param = softpipe_get_shader_param;
 332    screen->base.get_paramf = softpipe_get_paramf;
 333    screen->base.get_video_param = softpipe_get_video_param;
 334    screen->base.is_format_supported = softpipe_is_format_supported;
 335    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 336    screen->base.context_create = softpipe_create_context;
 337    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 338
 339    screen->use_llvm = debug_get_option_use_llvm();
 340
 341    util_format_s3tc_init();
 342
 343    softpipe_init_screen_texture_funcs(&screen->base);
 344    softpipe_init_screen_fence_funcs(&screen->base);
 345
 346    return &screen->base;
 347 }