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 #include "util/u_simple_screen.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_texture.h"
  30 #include "r300_transfer.h"
  31
  32 #include "radeon_winsys.h"
  33 #include "r300_winsys.h"
  34
  35 /* Return the identifier behind whom the brave coders responsible for this
  36  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  37  *
  38  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  39  *
  40  * (Or egotistical. Yet.) */
  41 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  42 {
  43     return "X.Org R300 Project";
  44 }
  45
  46 static const char* chip_families[] = {
  47     "R300",
  48     "R350",
  49     "R360",
  50     "RV350",
  51     "RV370",
  52     "RV380",
  53     "R420",
  54     "R423",
  55     "R430",
  56     "R480",
  57     "R481",
  58     "RV410",
  59     "RS400",
  60     "RC410",
  61     "RS480",
  62     "RS482",
  63     "RS600",
  64     "RS690",
  65     "RS740",
  66     "RV515",
  67     "R520",
  68     "RV530",
  69     "R580",
  70     "RV560",
  71     "RV570"
  72 };
  73
  74 static const char* r300_get_name(struct pipe_screen* pscreen)
  75 {
  76     struct r300_screen* r300screen = r300_screen(pscreen);
  77
  78     return chip_families[r300screen->caps->family];
  79 }
  80
  81 static int r300_get_param(struct pipe_screen* pscreen, int param)
  82 {
  83     struct r300_screen* r300screen = r300_screen(pscreen);
  84
  85     switch (param) {
  86         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  87         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  88             /* XXX I'm told this goes up to 16 */
  89             return 8;
  90         case PIPE_CAP_NPOT_TEXTURES:
  91             /* XXX enable now to get GL2.1 API,
  92              * figure out later how to emulate this */
  93             return 1;
  94         case PIPE_CAP_TWO_SIDED_STENCIL:
  95             if (r300screen->caps->is_r500) {
  96                 return 1;
  97             } else {
  98                 return 0;
  99             }
 100         case PIPE_CAP_GLSL:
 101             /* I'll be frank. This is a lie.
 102              *
 103              * We don't truly support GLSL on any of this driver's chipsets.
 104              * To be fair, no chipset supports the full GLSL specification
 105              * to the best of our knowledge, but some of the less esoteric
 106              * features are still missing here.
 107              *
 108              * Rather than cripple ourselves intentionally, I'm going to set
 109              * this flag, and as Gallium's interface continues to change, I
 110              * hope that this single monolithic GLSL enable can slowly get
 111              * split down into many different pieces and the state tracker
 112              * will handle fallbacks transparently, like it should.
 113              *
 114              * ~ C.
 115              */
 116             return 1;
 117         case PIPE_CAP_DUAL_SOURCE_BLEND:
 118             return 0;
 119         case PIPE_CAP_ANISOTROPIC_FILTER:
 120             return 1;
 121         case PIPE_CAP_POINT_SPRITE:
 122             return 1;
 123         case PIPE_CAP_MAX_RENDER_TARGETS:
 124             return 4;
 125         case PIPE_CAP_OCCLUSION_QUERY:
 126             return 1;
 127         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 128             return 1;
 129         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 130         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 131         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 132             if (r300screen->caps->is_r500) {
 133                 /* 13 == 4096 */
 134                 return 13;
 135             } else {
 136                 /* 12 == 2048 */
 137                 return 12;
 138             }
 139         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 140             return 1;
 141         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 142             return 1;
 143         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 144             return 0;
 145         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 146             return 0;
 147         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 148             return 1;
 149         case PIPE_CAP_SM3:
 150             if (r300screen->caps->is_r500) {
 151                 return 1;
 152             } else {
 153                 return 0;
 154             }
 155         case PIPE_CAP_MAX_CONST_BUFFERS:
 156             return 1;
 157         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 158             return 256;
 159         case PIPE_CAP_INDEP_BLEND_ENABLE:
 160             return 0;
 161         case PIPE_CAP_INDEP_BLEND_FUNC:
 162             return 0;
 163         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 164         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 165             return 1;
 166         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 167         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 168             return 0;
 169         default:
 170             debug_printf("r300: Implementation error: Bad param %d\n",
 171                 param);
 172             return 0;
 173     }
 174 }
 175
 176 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 177 {
 178     struct r300_screen* r300screen = r300_screen(pscreen);
 179
 180     switch (param) {
 181         case PIPE_CAP_MAX_LINE_WIDTH:
 182         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 183         case PIPE_CAP_MAX_POINT_WIDTH:
 184         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 185             /* The maximum dimensions of the colorbuffer are our practical
 186              * rendering limits. 2048 pixels should be enough for anybody. */
 187             if (r300screen->caps->is_r500) {
 188                 return 4096.0f;
 189             } else if (r300screen->caps->is_r400) {
 190                 return 4021.0f;
 191             } else {
 192                 return 2560.0f;
 193             }
 194         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 195             return 16.0f;
 196         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 197             return 16.0f;
 198         default:
 199             debug_printf("r300: Implementation error: Bad paramf %d\n",
 200                 param);
 201             return 0.0f;
 202     }
 203 }
 204
 205 static boolean r300_is_format_supported(struct pipe_screen* screen,
 206                                         enum pipe_format format,
 207                                         enum pipe_texture_target target,
 208                                         unsigned usage,
 209                                         unsigned geom_flags)
 210 {
 211     uint32_t retval = 0;
 212     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 213     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 214                      format == PIPE_FORMAT_S8Z24_UNORM;
 215     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM;
 216
 217     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 218         debug_printf("r300: Implementation error: Received bogus texture "
 219             "target %d in %s\n", target, __FUNCTION__);
 220         return FALSE;
 221     }
 222
 223     /* Check sampler format support. */
 224     if ((usage & PIPE_TEXTURE_USAGE_SAMPLER) &&
 225         /* Z24 cannot be sampled from on non-r5xx. */
 226         (is_r500 || !is_z24) &&
 227         r300_is_sampler_format_supported(format)) {
 228         retval |= PIPE_TEXTURE_USAGE_SAMPLER;
 229     }
 230
 231     /* Check colorbuffer format support. */
 232     if ((usage & (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 233                   PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 234                   PIPE_TEXTURE_USAGE_SCANOUT |
 235                   PIPE_TEXTURE_USAGE_SHARED)) &&
 236         /* 2101010 cannot be rendered to on non-r5xx. */
 237         (is_r500 || !is_color2101010) &&
 238         r300_is_colorbuffer_format_supported(format)) {
 239         retval |= usage &
 240             (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 241              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 242              PIPE_TEXTURE_USAGE_SCANOUT |
 243              PIPE_TEXTURE_USAGE_SHARED);
 244     }
 245
 246     /* Check depth-stencil format support. */
 247     if (usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL &&
 248         r300_is_zs_format_supported(format)) {
 249         retval |= PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 250     }
 251
 252     return retval == usage;
 253 }
 254
 255 static void r300_destroy_screen(struct pipe_screen* pscreen)
 256 {
 257     struct r300_screen* r300screen = r300_screen(pscreen);
 258
 259     FREE(r300screen->caps);
 260     FREE(r300screen);
 261 }
 262
 263 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 264 {
 265     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 266     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 267
 268     if (!r300screen || !caps) {
 269         FREE(r300screen);
 270         FREE(caps);
 271         return NULL;
 272     }
 273
 274     caps->pci_id = radeon_winsys->pci_id;
 275     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 276     caps->num_z_pipes = radeon_winsys->z_pipes;
 277
 278     r300_init_debug(r300screen);
 279     r300_parse_chipset(caps);
 280
 281     r300screen->caps = caps;
 282     r300screen->radeon_winsys = radeon_winsys;
 283     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 284     r300screen->screen.destroy = r300_destroy_screen;
 285     r300screen->screen.get_name = r300_get_name;
 286     r300screen->screen.get_vendor = r300_get_vendor;
 287     r300screen->screen.get_param = r300_get_param;
 288     r300screen->screen.get_paramf = r300_get_paramf;
 289     r300screen->screen.is_format_supported = r300_is_format_supported;
 290     r300screen->screen.context_create = r300_create_context;
 291
 292     r300_init_screen_texture_functions(&r300screen->screen);
 293     r300_init_screen_transfer_functions(&r300screen->screen);
 294     u_simple_screen_init(&r300screen->screen);
 295
 296     return &r300screen->screen;
 297 }
 298