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
  49 static const char *
  50 softpipe_get_vendor(struct pipe_screen *screen)
  51 {
  52    return "VMware, Inc.";
  53 }
  54
  55
  56 static const char *
  57 softpipe_get_name(struct pipe_screen *screen)
  58 {
  59    return "softpipe";
  60 }
  61
  62
  63 static int
  64 softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
  65 {
  66    switch (param) {
  67    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  68       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
  69    case PIPE_CAP_NPOT_TEXTURES:
  70       return 1;
  71    case PIPE_CAP_TWO_SIDED_STENCIL:
  72       return 1;
  73    case PIPE_CAP_SM3:
  74       return 1;
  75    case PIPE_CAP_ANISOTROPIC_FILTER:
  76       return 1;
  77    case PIPE_CAP_POINT_SPRITE:
  78       return 1;
  79    case PIPE_CAP_MAX_RENDER_TARGETS:
  80       return PIPE_MAX_COLOR_BUFS;
  81    case PIPE_CAP_OCCLUSION_QUERY:
  82       return 1;
  83    case PIPE_CAP_TIMER_QUERY:
  84       return 1;
  85    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  86       return 1;
  87    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  88       return 1;
  89    case PIPE_CAP_TEXTURE_SWIZZLE:
  90       return 1;
  91    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  92       return SP_MAX_TEXTURE_2D_LEVELS;
  93    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  94       return SP_MAX_TEXTURE_3D_LEVELS;
  95    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  96       return SP_MAX_TEXTURE_2D_LEVELS;
  97    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  98       return 1;
  99    case PIPE_CAP_INDEP_BLEND_ENABLE:
 100       return 1;
 101    case PIPE_CAP_INDEP_BLEND_FUNC:
 102       return 1;
 103    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 104    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 105    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 106    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 107       return 1;
 108    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 109       return PIPE_MAX_SO_BUFFERS;
 110    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 111    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 112       return 16*4;
 113    case PIPE_CAP_PRIMITIVE_RESTART:
 114       return 1;
 115    case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 116       return 0;
 117    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 118       return 1;
 119    case PIPE_CAP_TGSI_INSTANCEID:
 120    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 121       return 1;
 122    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 123       return 64; /* matches core Mesa defaults */
 124    case PIPE_CAP_MIN_TEXEL_OFFSET:
 125       return -8;
 126    case PIPE_CAP_MAX_TEXEL_OFFSET:
 127       return 7;
 128    case PIPE_CAP_CONDITIONAL_RENDER:
 129       return 1;
 130    default:
 131       return 0;
 132    }
 133 }
 134
 135 static int
 136 softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
 137 {
 138    switch(shader)
 139    {
 140    case PIPE_SHADER_FRAGMENT:
 141       return tgsi_exec_get_shader_param(param);
 142    case PIPE_SHADER_VERTEX:
 143    case PIPE_SHADER_GEOMETRY:
 144       switch (param) {
 145       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 146 #ifdef HAVE_LLVM
 147          /* Softpipe doesn't yet know how to tell draw/llvm about textures */
 148          return 0;
 149 #else
 150          return PIPE_MAX_VERTEX_SAMPLERS;
 151 #endif
 152       default:
 153          return draw_get_shader_param(shader, param);
 154       }
 155    default:
 156       return 0;
 157    }
 158 }
 159
 160 static float
 161 softpipe_get_paramf(struct pipe_screen *screen, enum pipe_capf param)
 162 {
 163    switch (param) {
 164    case PIPE_CAPF_MAX_LINE_WIDTH:
 165       /* fall-through */
 166    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 167       return 255.0; /* arbitrary */
 168    case PIPE_CAPF_MAX_POINT_WIDTH:
 169       /* fall-through */
 170    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 171       return 255.0; /* arbitrary */
 172    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 173       return 16.0;
 174    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 175       return 16.0; /* arbitrary */
 176    default:
 177       return 0;
 178    }
 179 }
 180
 181 static int
 182 softpipe_get_video_param(struct pipe_screen *screen,
 183                          enum pipe_video_profile profile,
 184                          enum pipe_video_cap param)
 185 {
 186    switch (param) {
 187    case PIPE_VIDEO_CAP_SUPPORTED:
 188        return vl_profile_supported(screen, profile);
 189    case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 190       return 0;
 191    case PIPE_VIDEO_CAP_MAX_WIDTH:
 192    case PIPE_VIDEO_CAP_MAX_HEIGHT:
 193       return vl_video_buffer_max_size(screen);
 194    default:
 195       return 0;
 196    }
 197 }
 198
 199 /**
 200  * Query format support for creating a texture, drawing surface, etc.
 201  * \param format  the format to test
 202  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 203  */
 204 static boolean
 205 softpipe_is_format_supported( struct pipe_screen *screen,
 206                               enum pipe_format format,
 207                               enum pipe_texture_target target,
 208                               unsigned sample_count,
 209                               unsigned bind)
 210 {
 211    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 212    const struct util_format_description *format_desc;
 213
 214    assert(target == PIPE_BUFFER ||
 215           target == PIPE_TEXTURE_1D ||
 216           target == PIPE_TEXTURE_1D_ARRAY ||
 217           target == PIPE_TEXTURE_2D ||
 218           target == PIPE_TEXTURE_2D_ARRAY ||
 219           target == PIPE_TEXTURE_RECT ||
 220           target == PIPE_TEXTURE_3D ||
 221           target == PIPE_TEXTURE_CUBE);
 222
 223    format_desc = util_format_description(format);
 224    if (!format_desc)
 225       return FALSE;
 226
 227    if (sample_count > 1)
 228       return FALSE;
 229
 230    if (bind & (PIPE_BIND_DISPLAY_TARGET |
 231                PIPE_BIND_SCANOUT |
 232                PIPE_BIND_SHARED)) {
 233       if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
 234          return FALSE;
 235    }
 236
 237    if (bind & PIPE_BIND_RENDER_TARGET) {
 238       if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
 239          return FALSE;
 240
 241       /*
 242        * Although possible, it is unnatural to render into compressed or YUV
 243        * surfaces. So disable these here to avoid going into weird paths
 244        * inside the state trackers.
 245        */
 246       if (format_desc->block.width != 1 ||
 247           format_desc->block.height != 1)
 248          return FALSE;
 249    }
 250
 251    if (bind & PIPE_BIND_DEPTH_STENCIL) {
 252       if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
 253          return FALSE;
 254    }
 255
 256    /*
 257     * All other operations (sampling, transfer, etc).
 258     */
 259
 260    if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 261       return util_format_s3tc_enabled;
 262    }
 263
 264    /*
 265     * Everything else should be supported by u_format.
 266     */
 267    return TRUE;
 268 }
 269
 270
 271 static void
 272 softpipe_destroy_screen( struct pipe_screen *screen )
 273 {
 274    struct softpipe_screen *sp_screen = softpipe_screen(screen);
 275    struct sw_winsys *winsys = sp_screen->winsys;
 276
 277    if(winsys->destroy)
 278       winsys->destroy(winsys);
 279
 280    FREE(screen);
 281 }
 282
 283
 284 /* This is often overriden by the co-state tracker.
 285  */
 286 static void
 287 softpipe_flush_frontbuffer(struct pipe_screen *_screen,
 288                            struct pipe_resource *resource,
 289                            unsigned level, unsigned layer,
 290                            void *context_private)
 291 {
 292    struct softpipe_screen *screen = softpipe_screen(_screen);
 293    struct sw_winsys *winsys = screen->winsys;
 294    struct softpipe_resource *texture = softpipe_resource(resource);
 295
 296    assert(texture->dt);
 297    if (texture->dt)
 298       winsys->displaytarget_display(winsys, texture->dt, context_private);
 299 }
 300
 301 /**
 302  * Create a new pipe_screen object
 303  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 304  */
 305 struct pipe_screen *
 306 softpipe_create_screen(struct sw_winsys *winsys)
 307 {
 308    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 309
 310    if (!screen)
 311       return NULL;
 312
 313    screen->winsys = winsys;
 314
 315    screen->base.winsys = NULL;
 316    screen->base.destroy = softpipe_destroy_screen;
 317
 318    screen->base.get_name = softpipe_get_name;
 319    screen->base.get_vendor = softpipe_get_vendor;
 320    screen->base.get_param = softpipe_get_param;
 321    screen->base.get_shader_param = softpipe_get_shader_param;
 322    screen->base.get_paramf = softpipe_get_paramf;
 323    screen->base.get_video_param = softpipe_get_video_param;
 324    screen->base.is_format_supported = softpipe_is_format_supported;
 325    screen->base.is_video_format_supported = vl_video_buffer_is_format_supported;
 326    screen->base.context_create = softpipe_create_context;
 327    screen->base.flush_frontbuffer = softpipe_flush_frontbuffer;
 328
 329    util_format_s3tc_init();
 330
 331    softpipe_init_screen_texture_funcs(&screen->base);
 332    softpipe_init_screen_fence_funcs(&screen->base);
 333
 334    return &screen->base;
 335 }