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 #include "r300_screen_buffer.h"
  30 #include "r300_winsys.h"
  31
  32 /* Return the identifier behind whom the brave coders responsible for this
  33  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  34  *
  35  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  36  *
  37  * (Or egotistical. Yet.) */
  38 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  39 {
  40     return "X.Org R300 Project";
  41 }
  42
  43 static const char* chip_families[] = {
  44     "R300",
  45     "R350",
  46     "R360",
  47     "RV350",
  48     "RV370",
  49     "RV380",
  50     "R420",
  51     "R423",
  52     "R430",
  53     "R480",
  54     "R481",
  55     "RV410",
  56     "RS400",
  57     "RC410",
  58     "RS480",
  59     "RS482",
  60     "RS600",
  61     "RS690",
  62     "RS740",
  63     "RV515",
  64     "R520",
  65     "RV530",
  66     "R580",
  67     "RV560",
  68     "RV570"
  69 };
  70
  71 static const char* r300_get_name(struct pipe_screen* pscreen)
  72 {
  73     struct r300_screen* r300screen = r300_screen(pscreen);
  74
  75     return chip_families[r300screen->caps->family];
  76 }
  77
  78 static int r300_get_param(struct pipe_screen* pscreen, int param)
  79 {
  80     struct r300_screen* r300screen = r300_screen(pscreen);
  81
  82     switch (param) {
  83         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  84         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  85             /* XXX I'm told this goes up to 16 */
  86             return 8;
  87         case PIPE_CAP_NPOT_TEXTURES:
  88             /* XXX enable now to get GL2.1 API,
  89              * figure out later how to emulate this */
  90             return 1;
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92             if (r300screen->caps->is_r500) {
  93                 return 1;
  94             } else {
  95                 return 0;
  96             }
  97         case PIPE_CAP_GLSL:
  98             /* I'll be frank. This is a lie.
  99              *
 100              * We don't truly support GLSL on any of this driver's chipsets.
 101              * To be fair, no chipset supports the full GLSL specification
 102              * to the best of our knowledge, but some of the less esoteric
 103              * features are still missing here.
 104              *
 105              * Rather than cripple ourselves intentionally, I'm going to set
 106              * this flag, and as Gallium's interface continues to change, I
 107              * hope that this single monolithic GLSL enable can slowly get
 108              * split down into many different pieces and the state tracker
 109              * will handle fallbacks transparently, like it should.
 110              *
 111              * ~ C.
 112              */
 113             return 1;
 114         case PIPE_CAP_DUAL_SOURCE_BLEND:
 115             return 0;
 116         case PIPE_CAP_ANISOTROPIC_FILTER:
 117             return 1;
 118         case PIPE_CAP_POINT_SPRITE:
 119             return 1;
 120         case PIPE_CAP_MAX_RENDER_TARGETS:
 121             return 4;
 122         case PIPE_CAP_OCCLUSION_QUERY:
 123             return 1;
 124         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 125             return 1;
 126         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 127         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 128         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 129             if (r300screen->caps->is_r500) {
 130                 /* 13 == 4096 */
 131                 return 13;
 132             } else {
 133                 /* 12 == 2048 */
 134                 return 12;
 135             }
 136         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 137             return 1;
 138         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 139             return 1;
 140         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 141             return 0;
 142         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 143             return 0;
 144         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 145             return 1;
 146         case PIPE_CAP_SM3:
 147             if (r300screen->caps->is_r500) {
 148                 return 1;
 149             } else {
 150                 return 0;
 151             }
 152         case PIPE_CAP_MAX_CONST_BUFFERS:
 153             return 1;
 154         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 155             return 256;
 156         case PIPE_CAP_INDEP_BLEND_ENABLE:
 157             return 0;
 158         case PIPE_CAP_INDEP_BLEND_FUNC:
 159             return 0;
 160         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 161         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 162             return 1;
 163         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 164         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 165             return 0;
 166         default:
 167             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 168                 param);
 169             return 0;
 170     }
 171 }
 172
 173 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 174 {
 175     struct r300_screen* r300screen = r300_screen(pscreen);
 176
 177     switch (param) {
 178         case PIPE_CAP_MAX_LINE_WIDTH:
 179         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 180         case PIPE_CAP_MAX_POINT_WIDTH:
 181         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 182             /* The maximum dimensions of the colorbuffer are our practical
 183              * rendering limits. 2048 pixels should be enough for anybody. */
 184             if (r300screen->caps->is_r500) {
 185                 return 4096.0f;
 186             } else if (r300screen->caps->is_r400) {
 187                 return 4021.0f;
 188             } else {
 189                 return 2560.0f;
 190             }
 191         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 192             return 16.0f;
 193         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 194             return 16.0f;
 195         default:
 196             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 197                 param);
 198             return 0.0f;
 199     }
 200 }
 201
 202 static boolean r300_is_format_supported(struct pipe_screen* screen,
 203                                         enum pipe_format format,
 204                                         enum pipe_texture_target target,
 205                                         unsigned usage,
 206                                         unsigned geom_flags)
 207 {
 208     uint32_t retval = 0;
 209     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 210     boolean is_r400 = r300_screen(screen)->caps->is_r400;
 211     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 212                      format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 213     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM;
 214     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 215                        format == PIPE_FORMAT_RGTC1_SNORM;
 216     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 217                        format == PIPE_FORMAT_RGTC2_SNORM;
 218
 219     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 220         fprintf(stderr, "r300: Implementation error: Received bogus texture "
 221             "target %d in %s\n", target, __FUNCTION__);
 222         return FALSE;
 223     }
 224
 225     /* Check sampler format support. */
 226     if ((usage & PIPE_TEXTURE_USAGE_SAMPLER) &&
 227         /* Z24 cannot be sampled from on non-r5xx. */
 228         (is_r500 || !is_z24) &&
 229         /* ATI1N is r5xx-only. */
 230         (is_r500 || !is_ati1n) &&
 231         /* ATI2N is supported on r4xx-r5xx. */
 232         (is_r400 || is_r500 || !is_ati2n) &&
 233         r300_is_sampler_format_supported(format)) {
 234         retval |= PIPE_TEXTURE_USAGE_SAMPLER;
 235     }
 236
 237     /* Check colorbuffer format support. */
 238     if ((usage & (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 239                   PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 240                   PIPE_TEXTURE_USAGE_SCANOUT |
 241                   PIPE_TEXTURE_USAGE_SHARED)) &&
 242         /* 2101010 cannot be rendered to on non-r5xx. */
 243         (is_r500 || !is_color2101010) &&
 244         r300_is_colorbuffer_format_supported(format)) {
 245         retval |= usage &
 246             (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 247              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 248              PIPE_TEXTURE_USAGE_SCANOUT |
 249              PIPE_TEXTURE_USAGE_SHARED);
 250     }
 251
 252     /* Check depth-stencil format support. */
 253     if (usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL &&
 254         r300_is_zs_format_supported(format)) {
 255         retval |= PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 256     }
 257
 258     return retval == usage;
 259 }
 260
 261 static void r300_destroy_screen(struct pipe_screen* pscreen)
 262 {
 263     struct r300_screen* r300screen = r300_screen(pscreen);
 264     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 265
 266     if (rws)
 267       rws->destroy(rws);
 268
 269     FREE(r300screen->caps);
 270     FREE(r300screen);
 271 }
 272
 273 struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 274 {
 275     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 276     struct r300_capabilities *caps = CALLOC_STRUCT(r300_capabilities);
 277
 278     if (!r300screen || !caps) {
 279         FREE(r300screen);
 280         FREE(caps);
 281         return NULL;
 282     }
 283
 284     caps->pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 285     caps->num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 286     caps->num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 287
 288     r300_init_debug(r300screen);
 289     r300_parse_chipset(caps);
 290
 291     r300screen->caps = caps;
 292     r300screen->rws = rws;
 293     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 294     r300screen->screen.destroy = r300_destroy_screen;
 295     r300screen->screen.get_name = r300_get_name;
 296     r300screen->screen.get_vendor = r300_get_vendor;
 297     r300screen->screen.get_param = r300_get_param;
 298     r300screen->screen.get_paramf = r300_get_paramf;
 299     r300screen->screen.is_format_supported = r300_is_format_supported;
 300     r300screen->screen.context_create = r300_create_context;
 301
 302     r300_init_screen_texture_functions(&r300screen->screen);
 303
 304     r300_screen_init_buffer_functions(r300screen);
 305     return &r300screen->screen;
 306 }
 307
 308 struct r300_winsys_screen *
 309 r300_winsys_screen(struct pipe_screen *screen)
 310 {
 311     return r300_screen(screen)->rws;
 312 }