src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_memory.h"
  26
  27 #include "r300_context.h"
  28 #include "r300_texture.h"
  29
  30 #include "radeon_winsys.h"
  31
  32 #include "r300_screen_buffer.h"
  33
  34 /* Return the identifier behind whom the brave coders responsible for this
  35  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  36  *
  37  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  38  *
  39  * (Or egotistical. Yet.) */
  40 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  41 {
  42     return "X.Org R300 Project";
  43 }
  44
  45 static const char* chip_families[] = {
  46     "R300",
  47     "R350",
  48     "R360",
  49     "RV350",
  50     "RV370",
  51     "RV380",
  52     "R420",
  53     "R423",
  54     "R430",
  55     "R480",
  56     "R481",
  57     "RV410",
  58     "RS400",
  59     "RC410",
  60     "RS480",
  61     "RS482",
  62     "RS600",
  63     "RS690",
  64     "RS740",
  65     "RV515",
  66     "R520",
  67     "RV530",
  68     "R580",
  69     "RV560",
  70     "RV570"
  71 };
  72
  73 static const char* r300_get_name(struct pipe_screen* pscreen)
  74 {
  75     struct r300_screen* r300screen = r300_screen(pscreen);
  76
  77     return chip_families[r300screen->caps->family];
  78 }
  79
  80 static int r300_get_param(struct pipe_screen* pscreen, int param)
  81 {
  82     struct r300_screen* r300screen = r300_screen(pscreen);
  83
  84     switch (param) {
  85         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  86         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  87             /* XXX I'm told this goes up to 16 */
  88             return 8;
  89         case PIPE_CAP_NPOT_TEXTURES:
  90             /* XXX enable now to get GL2.1 API,
  91              * figure out later how to emulate this */
  92             return 1;
  93         case PIPE_CAP_TWO_SIDED_STENCIL:
  94             if (r300screen->caps->is_r500) {
  95                 return 1;
  96             } else {
  97                 return 0;
  98             }
  99         case PIPE_CAP_GLSL:
 100             /* I'll be frank. This is a lie.
 101              *
 102              * We don't truly support GLSL on any of this driver's chipsets.
 103              * To be fair, no chipset supports the full GLSL specification
 104              * to the best of our knowledge, but some of the less esoteric
 105              * features are still missing here.
 106              *
 107              * Rather than cripple ourselves intentionally, I'm going to set
 108              * this flag, and as Gallium's interface continues to change, I
 109              * hope that this single monolithic GLSL enable can slowly get
 110              * split down into many different pieces and the state tracker
 111              * will handle fallbacks transparently, like it should.
 112              *
 113              * ~ C.
 114              */
 115             return 1;
 116         case PIPE_CAP_DUAL_SOURCE_BLEND:
 117             return 0;
 118         case PIPE_CAP_ANISOTROPIC_FILTER:
 119             return 1;
 120         case PIPE_CAP_POINT_SPRITE:
 121             return 1;
 122         case PIPE_CAP_MAX_RENDER_TARGETS:
 123             return 4;
 124         case PIPE_CAP_OCCLUSION_QUERY:
 125             return 1;
 126         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 127             return 1;
 128         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 129         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 130         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 131             if (r300screen->caps->is_r500) {
 132                 /* 13 == 4096 */
 133                 return 13;
 134             } else {
 135                 /* 12 == 2048 */
 136                 return 12;
 137             }
 138         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 139             return 1;
 140         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 141             return 1;
 142         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 143             return 0;
 144         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 145             return 0;
 146         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 147             return 1;
 148         case PIPE_CAP_SM3:
 149             if (r300screen->caps->is_r500) {
 150                 return 1;
 151             } else {
 152                 return 0;
 153             }
 154         case PIPE_CAP_MAX_CONST_BUFFERS:
 155             return 1;
 156         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 157             return 256;
 158         case PIPE_CAP_INDEP_BLEND_ENABLE:
 159             return 0;
 160         case PIPE_CAP_INDEP_BLEND_FUNC:
 161             return 0;
 162         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 163         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 164             return 1;
 165         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 166         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 167             return 0;
 168         default:
 169             debug_printf("r300: Implementation error: Bad param %d\n",
 170                 param);
 171             return 0;
 172     }
 173 }
 174
 175 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 176 {
 177     struct r300_screen* r300screen = r300_screen(pscreen);
 178
 179     switch (param) {
 180         case PIPE_CAP_MAX_LINE_WIDTH:
 181         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 182         case PIPE_CAP_MAX_POINT_WIDTH:
 183         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 184             /* The maximum dimensions of the colorbuffer are our practical
 185              * rendering limits. 2048 pixels should be enough for anybody. */
 186             if (r300screen->caps->is_r500) {
 187                 return 4096.0f;
 188             } else if (r300screen->caps->is_r400) {
 189                 return 4021.0f;
 190             } else {
 191                 return 2560.0f;
 192             }
 193         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 194             return 16.0f;
 195         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 196             return 16.0f;
 197         default:
 198             debug_printf("r300: Implementation error: Bad paramf %d\n",
 199                 param);
 200             return 0.0f;
 201     }
 202 }
 203
 204 static boolean r300_is_format_supported(struct pipe_screen* screen,
 205                                         enum pipe_format format,
 206                                         enum pipe_texture_target target,
 207                                         unsigned usage,
 208                                         unsigned geom_flags)
 209 {
 210     uint32_t retval = 0;
 211     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 212     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 213                      format == PIPE_FORMAT_S8Z24_UNORM;
 214     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM;
 215
 216     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 217         debug_printf("r300: Implementation error: Received bogus texture "
 218             "target %d in %s\n", target, __FUNCTION__);
 219         return FALSE;
 220     }
 221
 222     /* Check sampler format support. */
 223     if ((usage & PIPE_TEXTURE_USAGE_SAMPLER) &&
 224         /* Z24 cannot be sampled from on non-r5xx. */
 225         (is_r500 || !is_z24) &&
 226         r300_is_sampler_format_supported(format)) {
 227         retval |= PIPE_TEXTURE_USAGE_SAMPLER;
 228     }
 229
 230     /* Check colorbuffer format support. */
 231     if ((usage & (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 232                   PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 233                   PIPE_TEXTURE_USAGE_SCANOUT |
 234                   PIPE_TEXTURE_USAGE_SHARED)) &&
 235         /* 2101010 cannot be rendered to on non-r5xx. */
 236         (is_r500 || !is_color2101010) &&
 237         r300_is_colorbuffer_format_supported(format)) {
 238         retval |= usage &
 239             (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 240              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 241              PIPE_TEXTURE_USAGE_SCANOUT |
 242              PIPE_TEXTURE_USAGE_SHARED);
 243     }
 244
 245     /* Check depth-stencil format support. */
 246     if (usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL &&
 247         r300_is_zs_format_supported(format)) {
 248         retval |= PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 249     }
 250
 251     return retval == usage;
 252 }
 253
 254 static void r300_destroy_screen(struct pipe_screen* pscreen)
 255 {
 256     struct r300_screen* r300screen = r300_screen(pscreen);
 257     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 258
 259     if (rws)
 260       rws->destroy(rws);
 261
 262     FREE(r300screen->caps);
 263     FREE(r300screen);
 264 }
 265
 266 struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 267 {
 268     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 269     struct r300_capabilities *caps = CALLOC_STRUCT(r300_capabilities);
 270
 271     if (!r300screen || !caps) {
 272         FREE(r300screen);
 273         FREE(caps);
 274         return NULL;
 275     }
 276
 277     caps->pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 278     caps->num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 279     caps->num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 280
 281     r300_init_debug(r300screen);
 282     r300_parse_chipset(caps);
 283
 284     r300screen->caps = caps;
 285     r300screen->rws = rws;
 286     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 287     r300screen->screen.destroy = r300_destroy_screen;
 288     r300screen->screen.get_name = r300_get_name;
 289     r300screen->screen.get_vendor = r300_get_vendor;
 290     r300screen->screen.get_param = r300_get_param;
 291     r300screen->screen.get_paramf = r300_get_paramf;
 292     r300screen->screen.is_format_supported = r300_is_format_supported;
 293     r300screen->screen.context_create = r300_create_context;
 294
 295     r300_init_screen_texture_functions(&r300screen->screen);
 296
 297     r300_screen_init_buffer_functions(r300screen);
 298     return &r300screen->screen;
 299 }
 300
 301 struct r300_winsys_screen *
 302 r300_winsys_screen(struct pipe_screen *screen)
 303 {
 304     return r300_screen(screen)->rws;
 305 }