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