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