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_format_s3tc.h"
  26 #include "util/u_memory.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_texture.h"
  30 #include "r300_screen_buffer.h"
  31 #include "r300_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             return r300screen->caps.num_tex_units;
  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             return 1;
  93         case PIPE_CAP_GLSL:
  94             /* I'll be frank. This is a lie.
  95              *
  96              * We don't truly support GLSL on any of this driver's chipsets.
  97              * To be fair, no chipset supports the full GLSL specification
  98              * to the best of our knowledge, but some of the less esoteric
  99              * features are still missing here.
 100              *
 101              * Rather than cripple ourselves intentionally, I'm going to set
 102              * this flag, and as Gallium's interface continues to change, I
 103              * hope that this single monolithic GLSL enable can slowly get
 104              * split down into many different pieces and the state tracker
 105              * will handle fallbacks transparently, like it should.
 106              *
 107              * ~ C.
 108              */
 109             return 1;
 110         case PIPE_CAP_DUAL_SOURCE_BLEND:
 111             return 0;
 112         case PIPE_CAP_ANISOTROPIC_FILTER:
 113             return 1;
 114         case PIPE_CAP_POINT_SPRITE:
 115             return 1;
 116         case PIPE_CAP_MAX_RENDER_TARGETS:
 117             return 4;
 118         case PIPE_CAP_OCCLUSION_QUERY:
 119             return 1;
 120         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 121             return 1;
 122         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 123         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 124         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 125             if (r300screen->caps.is_r500) {
 126                 /* 13 == 4096 */
 127                 return 13;
 128             } else {
 129                 /* 12 == 2048 */
 130                 return 12;
 131             }
 132         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 133             return 1;
 134         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 135             return 1;
 136         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 137             return 0;
 138         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 139             return 0;
 140         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 141             return 1;
 142         case PIPE_CAP_SM3:
 143             if (r300screen->caps.is_r500) {
 144                 return 1;
 145             } else {
 146                 return 0;
 147             }
 148         case PIPE_CAP_MAX_CONST_BUFFERS:
 149             return 1;
 150         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 151             return 256;
 152         case PIPE_CAP_INDEP_BLEND_ENABLE:
 153             return 0;
 154         case PIPE_CAP_INDEP_BLEND_FUNC:
 155             return 0;
 156         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 157         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 158             return 1;
 159         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 160         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 161             return 0;
 162         default:
 163             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 164                 param);
 165             return 0;
 166     }
 167 }
 168
 169 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 170 {
 171     struct r300_screen* r300screen = r300_screen(pscreen);
 172
 173     switch (param) {
 174         case PIPE_CAP_MAX_LINE_WIDTH:
 175         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 176         case PIPE_CAP_MAX_POINT_WIDTH:
 177         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 178             /* The maximum dimensions of the colorbuffer are our practical
 179              * rendering limits. 2048 pixels should be enough for anybody. */
 180             if (r300screen->caps.is_r500) {
 181                 return 4096.0f;
 182             } else if (r300screen->caps.is_r400) {
 183                 return 4021.0f;
 184             } else {
 185                 return 2560.0f;
 186             }
 187         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 188             return 16.0f;
 189         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 190             return 16.0f;
 191         default:
 192             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 193                 param);
 194             return 0.0f;
 195     }
 196 }
 197
 198 static boolean r300_is_format_supported(struct pipe_screen* screen,
 199                                         enum pipe_format format,
 200                                         enum pipe_texture_target target,
 201                                         unsigned usage,
 202                                         unsigned geom_flags)
 203 {
 204     uint32_t retval = 0;
 205     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 206     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 207     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 208                      format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 209     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 210                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 211                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 212                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 213     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 214                        format == PIPE_FORMAT_RGTC1_SNORM;
 215     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 216                        format == PIPE_FORMAT_RGTC2_SNORM;
 217
 218     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 219         fprintf(stderr, "r300: Implementation error: Received bogus texture "
 220             "target %d in %s\n", target, __FUNCTION__);
 221         return FALSE;
 222     }
 223
 224     /* Check sampler format support. */
 225     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 226         /* Z24 cannot be sampled from on non-r5xx. */
 227         (is_r500 || !is_z24) &&
 228         /* ATI1N is r5xx-only. */
 229         (is_r500 || !is_ati1n) &&
 230         /* ATI2N is supported on r4xx-r5xx. */
 231         (is_r400 || is_r500 || !is_ati2n) &&
 232         r300_is_sampler_format_supported(format)) {
 233         retval |= PIPE_BIND_SAMPLER_VIEW;
 234     }
 235
 236     /* Check colorbuffer format support. */
 237     if ((usage & (PIPE_BIND_RENDER_TARGET |
 238                   PIPE_BIND_DISPLAY_TARGET |
 239                   PIPE_BIND_SCANOUT |
 240                   PIPE_BIND_SHARED)) &&
 241         /* 2101010 cannot be rendered to on non-r5xx. */
 242         (is_r500 || !is_color2101010) &&
 243         r300_is_colorbuffer_format_supported(format)) {
 244         retval |= usage &
 245             (PIPE_BIND_RENDER_TARGET |
 246              PIPE_BIND_DISPLAY_TARGET |
 247              PIPE_BIND_SCANOUT |
 248              PIPE_BIND_SHARED);
 249     }
 250
 251     /* Check depth-stencil format support. */
 252     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 253         r300_is_zs_format_supported(format)) {
 254         retval |= PIPE_BIND_DEPTH_STENCIL;
 255     }
 256
 257     return retval == usage;
 258 }
 259
 260 static void r300_destroy_screen(struct pipe_screen* pscreen)
 261 {
 262     struct r300_screen* r300screen = r300_screen(pscreen);
 263     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 264
 265     if (rws)
 266       rws->destroy(rws);
 267
 268     FREE(r300screen);
 269 }
 270
 271 static void r300_fence_reference(struct pipe_screen *screen,
 272                                  struct pipe_fence_handle **ptr,
 273                                  struct pipe_fence_handle *fence)
 274 {
 275 }
 276
 277 static int r300_fence_signalled(struct pipe_screen *screen,
 278                                 struct pipe_fence_handle *fence,
 279                                 unsigned flags)
 280 {
 281     return 0;
 282 }
 283
 284 static int r300_fence_finish(struct pipe_screen *screen,
 285                              struct pipe_fence_handle *fence,
 286                              unsigned flags)
 287 {
 288     return 0;
 289 }
 290
 291 struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 292 {
 293     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 294
 295     if (!r300screen) {
 296         FREE(r300screen);
 297         return NULL;
 298     }
 299
 300     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 301     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 302     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 303
 304     r300_init_debug(r300screen);
 305     r300_parse_chipset(&r300screen->caps);
 306
 307     r300screen->rws = rws;
 308     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 309     r300screen->screen.destroy = r300_destroy_screen;
 310     r300screen->screen.get_name = r300_get_name;
 311     r300screen->screen.get_vendor = r300_get_vendor;
 312     r300screen->screen.get_param = r300_get_param;
 313     r300screen->screen.get_paramf = r300_get_paramf;
 314     r300screen->screen.is_format_supported = r300_is_format_supported;
 315     r300screen->screen.context_create = r300_create_context;
 316
 317     r300screen->screen.fence_reference = r300_fence_reference;
 318     r300screen->screen.fence_signalled = r300_fence_signalled;
 319     r300screen->screen.fence_finish = r300_fence_finish;
 320
 321     r300_init_screen_resource_functions(r300screen);
 322
 323     util_format_s3tc_init();
 324
 325     return &r300screen->screen;
 326 }
 327
 328 struct r300_winsys_screen *
 329 r300_winsys_screen(struct pipe_screen *screen)
 330 {
 331     return r300_screen(screen)->rws;
 332 }