src/gallium/drivers/r300/r300_state_inlines.h

   1 /*
   2  * Copyright 2009 Joakim Sindholt <opensource@zhasha.com>
   3  *                Corbin Simpson <MostAwesomeDude@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 #ifndef R300_STATE_INLINES_H
  25 #define R300_STATE_INLINES_H
  26
  27 #include "draw/draw_vertex.h"
  28
  29 #include "pipe/p_format.h"
  30
  31 #include "util/u_format.h"
  32
  33 #include "r300_reg.h"
  34
  35 #include <stdio.h>
  36
  37 /* Some maths. These should probably find their way to u_math, if needed. */
  38
  39 static INLINE int pack_float_16_6x(float f) {
  40     return ((int)(f * 6.0) & 0xffff);
  41 }
  42
  43 /* Blend state. */
  44
  45 static INLINE uint32_t r300_translate_blend_function(int blend_func)
  46 {
  47     switch (blend_func) {
  48         case PIPE_BLEND_ADD:
  49             return R300_COMB_FCN_ADD_CLAMP;
  50         case PIPE_BLEND_SUBTRACT:
  51             return R300_COMB_FCN_SUB_CLAMP;
  52         case PIPE_BLEND_REVERSE_SUBTRACT:
  53             return R300_COMB_FCN_RSUB_CLAMP;
  54         case PIPE_BLEND_MIN:
  55             return R300_COMB_FCN_MIN;
  56         case PIPE_BLEND_MAX:
  57             return R300_COMB_FCN_MAX;
  58         default:
  59             fprintf(stderr, "r300: Unknown blend function %d\n", blend_func);
  60             assert(0);
  61             break;
  62     }
  63     return 0;
  64 }
  65
  66 /* XXX we can also offer the D3D versions of some of these... */
  67 static INLINE uint32_t r300_translate_blend_factor(int blend_fact)
  68 {
  69     switch (blend_fact) {
  70         case PIPE_BLENDFACTOR_ONE:
  71             return R300_BLEND_GL_ONE;
  72         case PIPE_BLENDFACTOR_SRC_COLOR:
  73             return R300_BLEND_GL_SRC_COLOR;
  74         case PIPE_BLENDFACTOR_SRC_ALPHA:
  75             return R300_BLEND_GL_SRC_ALPHA;
  76         case PIPE_BLENDFACTOR_DST_ALPHA:
  77             return R300_BLEND_GL_DST_ALPHA;
  78         case PIPE_BLENDFACTOR_DST_COLOR:
  79             return R300_BLEND_GL_DST_COLOR;
  80         case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
  81             return R300_BLEND_GL_SRC_ALPHA_SATURATE;
  82         case PIPE_BLENDFACTOR_CONST_COLOR:
  83             return R300_BLEND_GL_CONST_COLOR;
  84         case PIPE_BLENDFACTOR_CONST_ALPHA:
  85             return R300_BLEND_GL_CONST_ALPHA;
  86         case PIPE_BLENDFACTOR_ZERO:
  87             return R300_BLEND_GL_ZERO;
  88         case PIPE_BLENDFACTOR_INV_SRC_COLOR:
  89             return R300_BLEND_GL_ONE_MINUS_SRC_COLOR;
  90         case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
  91             return R300_BLEND_GL_ONE_MINUS_SRC_ALPHA;
  92         case PIPE_BLENDFACTOR_INV_DST_ALPHA:
  93             return R300_BLEND_GL_ONE_MINUS_DST_ALPHA;
  94         case PIPE_BLENDFACTOR_INV_DST_COLOR:
  95             return R300_BLEND_GL_ONE_MINUS_DST_COLOR;
  96         case PIPE_BLENDFACTOR_INV_CONST_COLOR:
  97             return R300_BLEND_GL_ONE_MINUS_CONST_COLOR;
  98         case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
  99             return R300_BLEND_GL_ONE_MINUS_CONST_ALPHA;
 100
 101         case PIPE_BLENDFACTOR_SRC1_COLOR:
 102         case PIPE_BLENDFACTOR_SRC1_ALPHA:
 103         case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
 104         case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
 105             fprintf(stderr, "r300: Implementation error: "
 106                 "Bad blend factor %d not supported!\n", blend_fact);
 107             assert(0);
 108             break;
 109
 110         default:
 111             fprintf(stderr, "r300: Unknown blend factor %d\n", blend_fact);
 112             assert(0);
 113             break;
 114     }
 115     return 0;
 116 }
 117
 118 /* DSA state. */
 119
 120 static INLINE uint32_t r300_translate_depth_stencil_function(int zs_func)
 121 {
 122     switch (zs_func) {
 123         case PIPE_FUNC_NEVER:
 124             return R300_ZS_NEVER;
 125         case PIPE_FUNC_LESS:
 126             return R300_ZS_LESS;
 127         case PIPE_FUNC_EQUAL:
 128             return R300_ZS_EQUAL;
 129         case PIPE_FUNC_LEQUAL:
 130             return R300_ZS_LEQUAL;
 131         case PIPE_FUNC_GREATER:
 132             return R300_ZS_GREATER;
 133         case PIPE_FUNC_NOTEQUAL:
 134             return R300_ZS_NOTEQUAL;
 135         case PIPE_FUNC_GEQUAL:
 136             return R300_ZS_GEQUAL;
 137         case PIPE_FUNC_ALWAYS:
 138             return R300_ZS_ALWAYS;
 139         default:
 140             fprintf(stderr, "r300: Unknown depth/stencil function %d\n",
 141                 zs_func);
 142             assert(0);
 143             break;
 144     }
 145     return 0;
 146 }
 147
 148 static INLINE uint32_t r300_translate_stencil_op(int s_op)
 149 {
 150     switch (s_op) {
 151         case PIPE_STENCIL_OP_KEEP:
 152             return R300_ZS_KEEP;
 153         case PIPE_STENCIL_OP_ZERO:
 154             return R300_ZS_ZERO;
 155         case PIPE_STENCIL_OP_REPLACE:
 156             return R300_ZS_REPLACE;
 157         case PIPE_STENCIL_OP_INCR:
 158             return R300_ZS_INCR;
 159         case PIPE_STENCIL_OP_DECR:
 160             return R300_ZS_DECR;
 161         case PIPE_STENCIL_OP_INCR_WRAP:
 162             return R300_ZS_INCR_WRAP;
 163         case PIPE_STENCIL_OP_DECR_WRAP:
 164             return R300_ZS_DECR_WRAP;
 165         case PIPE_STENCIL_OP_INVERT:
 166             return R300_ZS_INVERT;
 167         default:
 168             fprintf(stderr, "r300: Unknown stencil op %d", s_op);
 169             assert(0);
 170             break;
 171     }
 172     return 0;
 173 }
 174
 175 static INLINE uint32_t r300_translate_alpha_function(int alpha_func)
 176 {
 177     switch (alpha_func) {
 178         case PIPE_FUNC_NEVER:
 179             return R300_FG_ALPHA_FUNC_NEVER;
 180         case PIPE_FUNC_LESS:
 181             return R300_FG_ALPHA_FUNC_LESS;
 182         case PIPE_FUNC_EQUAL:
 183             return R300_FG_ALPHA_FUNC_EQUAL;
 184         case PIPE_FUNC_LEQUAL:
 185             return R300_FG_ALPHA_FUNC_LE;
 186         case PIPE_FUNC_GREATER:
 187             return R300_FG_ALPHA_FUNC_GREATER;
 188         case PIPE_FUNC_NOTEQUAL:
 189             return R300_FG_ALPHA_FUNC_NOTEQUAL;
 190         case PIPE_FUNC_GEQUAL:
 191             return R300_FG_ALPHA_FUNC_GE;
 192         case PIPE_FUNC_ALWAYS:
 193             return R300_FG_ALPHA_FUNC_ALWAYS;
 194         default:
 195             fprintf(stderr, "r300: Unknown alpha function %d", alpha_func);
 196             assert(0);
 197             break;
 198     }
 199     return 0;
 200 }
 201
 202 static INLINE uint32_t
 203 r300_translate_polygon_mode_front(unsigned mode) {
 204     switch (mode)
 205     {
 206         case PIPE_POLYGON_MODE_FILL:
 207             return R300_GA_POLY_MODE_FRONT_PTYPE_TRI;
 208         case PIPE_POLYGON_MODE_LINE:
 209             return R300_GA_POLY_MODE_FRONT_PTYPE_LINE;
 210         case PIPE_POLYGON_MODE_POINT:
 211             return R300_GA_POLY_MODE_FRONT_PTYPE_POINT;
 212
 213         default:
 214             fprintf(stderr, "r300: Bad polygon mode %i in %s\n", mode,
 215                 __FUNCTION__);
 216             return R300_GA_POLY_MODE_FRONT_PTYPE_TRI;
 217     }
 218 }
 219
 220 static INLINE uint32_t
 221 r300_translate_polygon_mode_back(unsigned mode) {
 222     switch (mode)
 223     {
 224         case PIPE_POLYGON_MODE_FILL:
 225             return R300_GA_POLY_MODE_BACK_PTYPE_TRI;
 226         case PIPE_POLYGON_MODE_LINE:
 227             return R300_GA_POLY_MODE_BACK_PTYPE_LINE;
 228         case PIPE_POLYGON_MODE_POINT:
 229             return R300_GA_POLY_MODE_BACK_PTYPE_POINT;
 230
 231         default:
 232             fprintf(stderr, "r300: Bad polygon mode %i in %s\n", mode,
 233                 __FUNCTION__);
 234             return R300_GA_POLY_MODE_BACK_PTYPE_TRI;
 235     }
 236 }
 237
 238 /* Texture sampler state. */
 239
 240 static INLINE uint32_t r300_translate_wrap(int wrap)
 241 {
 242     switch (wrap) {
 243         case PIPE_TEX_WRAP_REPEAT:
 244             return R300_TX_REPEAT;
 245         case PIPE_TEX_WRAP_CLAMP:
 246             return R300_TX_CLAMP;
 247         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
 248             return R300_TX_CLAMP_TO_EDGE;
 249         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
 250             return R300_TX_CLAMP_TO_BORDER;
 251         case PIPE_TEX_WRAP_MIRROR_REPEAT:
 252             return R300_TX_REPEAT | R300_TX_MIRRORED;
 253         case PIPE_TEX_WRAP_MIRROR_CLAMP:
 254             return R300_TX_CLAMP | R300_TX_MIRRORED;
 255         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
 256             return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED;
 257         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
 258             return R300_TX_CLAMP_TO_BORDER | R300_TX_MIRRORED;
 259         default:
 260             fprintf(stderr, "r300: Unknown texture wrap %d", wrap);
 261             assert(0);
 262             return 0;
 263     }
 264 }
 265
 266 static INLINE uint32_t r300_translate_tex_filters(int min, int mag, int mip,
 267                                                   int is_anisotropic)
 268 {
 269     uint32_t retval = 0;
 270     if (is_anisotropic)
 271         retval |= R300_TX_MIN_FILTER_ANISO | R300_TX_MAG_FILTER_ANISO;
 272     else {
 273         switch (min) {
 274         case PIPE_TEX_FILTER_NEAREST:
 275             retval |= R300_TX_MIN_FILTER_NEAREST;
 276             break;
 277         case PIPE_TEX_FILTER_LINEAR:
 278             retval |= R300_TX_MIN_FILTER_LINEAR;
 279             break;
 280         default:
 281             fprintf(stderr, "r300: Unknown texture filter %d\n", min);
 282             assert(0);
 283             break;
 284         }
 285         switch (mag) {
 286         case PIPE_TEX_FILTER_NEAREST:
 287             retval |= R300_TX_MAG_FILTER_NEAREST;
 288             break;
 289         case PIPE_TEX_FILTER_LINEAR:
 290             retval |= R300_TX_MAG_FILTER_LINEAR;
 291             break;
 292         default:
 293             fprintf(stderr, "r300: Unknown texture filter %d\n", mag);
 294             assert(0);
 295             break;
 296         }
 297     }
 298     switch (mip) {
 299         case PIPE_TEX_MIPFILTER_NONE:
 300             retval |= R300_TX_MIN_FILTER_MIP_NONE;
 301             break;
 302         case PIPE_TEX_MIPFILTER_NEAREST:
 303             retval |= R300_TX_MIN_FILTER_MIP_NEAREST;
 304             break;
 305         case PIPE_TEX_MIPFILTER_LINEAR:
 306             retval |= R300_TX_MIN_FILTER_MIP_LINEAR;
 307             break;
 308         default:
 309             fprintf(stderr, "r300: Unknown texture filter %d\n", mip);
 310             assert(0);
 311             break;
 312     }
 313
 314     return retval;
 315 }
 316
 317 static INLINE uint32_t r300_anisotropy(unsigned max_aniso)
 318 {
 319     if (max_aniso >= 16) {
 320         return R300_TX_MAX_ANISO_16_TO_1;
 321     } else if (max_aniso >= 8) {
 322         return R300_TX_MAX_ANISO_8_TO_1;
 323     } else if (max_aniso >= 4) {
 324         return R300_TX_MAX_ANISO_4_TO_1;
 325     } else if (max_aniso >= 2) {
 326         return R300_TX_MAX_ANISO_2_TO_1;
 327     } else {
 328         return R300_TX_MAX_ANISO_1_TO_1;
 329     }
 330 }
 331
 332 static INLINE uint32_t r500_anisotropy(unsigned max_aniso)
 333 {
 334     if (!max_aniso) {
 335         return 0;
 336     }
 337     max_aniso -= 1;
 338
 339     // Map the range [0, 15] to [0, 63].
 340     return R500_TX_MAX_ANISO(MIN2((unsigned)(max_aniso*4.2001), 63)) |
 341            R500_TX_ANISO_HIGH_QUALITY;
 342 }
 343
 344 /* Non-CSO state. (For now.) */
 345
 346 static INLINE uint32_t r300_translate_gb_pipes(int pipe_count)
 347 {
 348     switch (pipe_count) {
 349         case 1:
 350             return R300_GB_TILE_PIPE_COUNT_RV300;
 351         case 2:
 352             return R300_GB_TILE_PIPE_COUNT_R300;
 353         case 3:
 354             return R300_GB_TILE_PIPE_COUNT_R420_3P;
 355         case 4:
 356             return R300_GB_TILE_PIPE_COUNT_R420;
 357     }
 358     return 0;
 359 }
 360
 361
 362 /* Translate pipe_formats into PSC vertex types. */
 363 static INLINE uint16_t
 364 r300_translate_vertex_data_type(enum pipe_format format) {
 365     uint32_t result = 0;
 366     const struct util_format_description *desc;
 367     unsigned i;
 368
 369     desc = util_format_description(format);
 370
 371     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
 372         return R300_INVALID_FORMAT;
 373     }
 374
 375     /* Find the first non-VOID channel. */
 376     for (i = 0; i < 4; i++) {
 377         if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
 378             break;
 379         }
 380     }
 381
 382     switch (desc->channel[i].type) {
 383         /* Half-floats, floats, doubles */
 384         case UTIL_FORMAT_TYPE_FLOAT:
 385             switch (desc->channel[i].size) {
 386                 case 16:
 387                     /* Supported only on RV350 and later. */
 388                     if (desc->nr_channels > 2) {
 389                         result = R300_DATA_TYPE_FLT16_4;
 390                     } else {
 391                         result = R300_DATA_TYPE_FLT16_2;
 392                     }
 393                     break;
 394                 case 32:
 395                     result = R300_DATA_TYPE_FLOAT_1 + (desc->nr_channels - 1);
 396                     break;
 397                 default:
 398                     return R300_INVALID_FORMAT;
 399             }
 400             break;
 401         /* Unsigned ints */
 402         case UTIL_FORMAT_TYPE_UNSIGNED:
 403         /* Signed ints */
 404         case UTIL_FORMAT_TYPE_SIGNED:
 405             switch (desc->channel[i].size) {
 406                 case 8:
 407                     result = R300_DATA_TYPE_BYTE;
 408                     break;
 409                 case 16:
 410                     if (desc->nr_channels > 2) {
 411                         result = R300_DATA_TYPE_SHORT_4;
 412                     } else {
 413                         result = R300_DATA_TYPE_SHORT_2;
 414                     }
 415                     break;
 416                 default:
 417                     return R300_INVALID_FORMAT;
 418             }
 419             break;
 420         default:
 421             return R300_INVALID_FORMAT;
 422     }
 423
 424     if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
 425         result |= R300_SIGNED;
 426     }
 427     if (desc->channel[i].normalized) {
 428         result |= R300_NORMALIZE;
 429     }
 430
 431     return result;
 432 }
 433
 434 static INLINE uint16_t
 435 r300_translate_vertex_data_swizzle(enum pipe_format format) {
 436     const struct util_format_description *desc = util_format_description(format);
 437     unsigned i, swizzle = 0;
 438
 439     assert(format);
 440
 441     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
 442         fprintf(stderr, "r300: Bad format %s in %s:%d\n",
 443             util_format_short_name(format), __FUNCTION__, __LINE__);
 444         return 0;
 445     }
 446
 447     for (i = 0; i < desc->nr_channels; i++) {
 448         swizzle |=
 449             MIN2(desc->swizzle[i], R300_SWIZZLE_SELECT_FP_ONE) << (3*i);
 450     }
 451     /* Set (0,0,0,1) in unused components. */
 452     for (; i < 3; i++) {
 453         swizzle |= R300_SWIZZLE_SELECT_FP_ZERO << (3*i);
 454     }
 455     for (; i < 4; i++) {
 456         swizzle |= R300_SWIZZLE_SELECT_FP_ONE << (3*i);
 457     }
 458
 459     return swizzle | (0xf << R300_WRITE_ENA_SHIFT);
 460 }
 461
 462 #endif /* R300_STATE_INLINES_H */