src/gallium/drivers/freedreno/a3xx/fd3_util.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #include "pipe/p_defines.h"
  30 #include "util/u_format.h"
  31
  32 #include "fd3_util.h"
  33
  34 /* convert pipe format to vertex buffer format: */
  35 enum a3xx_vtx_fmt
  36 fd3_pipe2vtx(enum pipe_format format)
  37 {
  38         switch (format) {
  39         /* 8-bit buffers. */
  40         case PIPE_FORMAT_A8_UNORM:
  41         case PIPE_FORMAT_I8_UNORM:
  42         case PIPE_FORMAT_L8_UNORM:
  43         case PIPE_FORMAT_R8_UNORM:
  44         case PIPE_FORMAT_L8_SRGB:
  45                 return VFMT_NORM_UBYTE_8;
  46
  47         case PIPE_FORMAT_A8_SNORM:
  48         case PIPE_FORMAT_I8_SNORM:
  49         case PIPE_FORMAT_L8_SNORM:
  50         case PIPE_FORMAT_R8_SNORM:
  51                 return VFMT_NORM_BYTE_8;
  52
  53         case PIPE_FORMAT_A8_UINT:
  54         case PIPE_FORMAT_I8_UINT:
  55         case PIPE_FORMAT_L8_UINT:
  56         case PIPE_FORMAT_R8_UINT:
  57                 return VFMT_UBYTE_8;
  58
  59         case PIPE_FORMAT_A8_SINT:
  60         case PIPE_FORMAT_I8_SINT:
  61         case PIPE_FORMAT_L8_SINT:
  62         case PIPE_FORMAT_R8_SINT:
  63                 return VFMT_BYTE_8;
  64
  65         /* 16-bit buffers. */
  66         case PIPE_FORMAT_R16_UNORM:
  67         case PIPE_FORMAT_A16_UNORM:
  68         case PIPE_FORMAT_L16_UNORM:
  69         case PIPE_FORMAT_I16_UNORM:
  70         case PIPE_FORMAT_Z16_UNORM:
  71                 return VFMT_NORM_USHORT_16;
  72
  73         case PIPE_FORMAT_R16_SNORM:
  74         case PIPE_FORMAT_A16_SNORM:
  75         case PIPE_FORMAT_L16_SNORM:
  76         case PIPE_FORMAT_I16_SNORM:
  77                 return VFMT_NORM_SHORT_16;
  78
  79         case PIPE_FORMAT_R16_UINT:
  80         case PIPE_FORMAT_A16_UINT:
  81         case PIPE_FORMAT_L16_UINT:
  82         case PIPE_FORMAT_I16_UINT:
  83                 return VFMT_USHORT_16;
  84
  85         case PIPE_FORMAT_R16_SINT:
  86         case PIPE_FORMAT_A16_SINT:
  87         case PIPE_FORMAT_L16_SINT:
  88         case PIPE_FORMAT_I16_SINT:
  89                 return VFMT_SHORT_16;
  90
  91         case PIPE_FORMAT_L8A8_UNORM:
  92         case PIPE_FORMAT_R8G8_UNORM:
  93                 return VFMT_NORM_UBYTE_8_8;
  94
  95         case PIPE_FORMAT_L8A8_SNORM:
  96         case PIPE_FORMAT_R8G8_SNORM:
  97                 return VFMT_NORM_BYTE_8_8;
  98
  99         case PIPE_FORMAT_L8A8_UINT:
 100         case PIPE_FORMAT_R8G8_UINT:
 101                 return VFMT_UBYTE_8_8;
 102
 103         case PIPE_FORMAT_L8A8_SINT:
 104         case PIPE_FORMAT_R8G8_SINT:
 105                 return VFMT_BYTE_8_8;
 106
 107         /* 24-bit buffers. */
 108         case PIPE_FORMAT_R8G8B8_UNORM:
 109                 return VFMT_NORM_UBYTE_8_8_8;
 110
 111         case PIPE_FORMAT_R8G8B8_SNORM:
 112                 return VFMT_NORM_BYTE_8_8_8;
 113
 114         case PIPE_FORMAT_R8G8B8_UINT:
 115                 return VFMT_UBYTE_8_8_8;
 116
 117         case PIPE_FORMAT_R8G8B8_SINT:
 118                 return VFMT_BYTE_8_8_8;
 119
 120         /* 32-bit buffers. */
 121         case PIPE_FORMAT_A8B8G8R8_UNORM:
 122         case PIPE_FORMAT_A8R8G8B8_UNORM:
 123         case PIPE_FORMAT_B8G8R8A8_UNORM:
 124         case PIPE_FORMAT_B8G8R8X8_UNORM:
 125         case PIPE_FORMAT_R8G8B8A8_UNORM:
 126         case PIPE_FORMAT_R8G8B8X8_UNORM:
 127         case PIPE_FORMAT_X8B8G8R8_UNORM:
 128         case PIPE_FORMAT_X8R8G8B8_UNORM:
 129         case PIPE_FORMAT_A8B8G8R8_SRGB:
 130         case PIPE_FORMAT_B8G8R8A8_SRGB:
 131                 return VFMT_NORM_UBYTE_8_8_8_8;
 132
 133         case PIPE_FORMAT_R8G8B8A8_SNORM:
 134         case PIPE_FORMAT_R8G8B8X8_SNORM:
 135                 return VFMT_NORM_BYTE_8_8_8_8;
 136
 137         case PIPE_FORMAT_R8G8B8A8_UINT:
 138         case PIPE_FORMAT_R8G8B8X8_UINT:
 139                 return VFMT_UBYTE_8_8_8_8;
 140
 141         case PIPE_FORMAT_R8G8B8A8_SINT:
 142         case PIPE_FORMAT_R8G8B8X8_SINT:
 143                 return VFMT_BYTE_8_8_8_8;
 144
 145 /* TODO probably need gles3 blob drivers to find the 32bit int formats:
 146         case PIPE_FORMAT_R32_UINT:
 147         case PIPE_FORMAT_R32_SINT:
 148         case PIPE_FORMAT_A32_UINT:
 149         case PIPE_FORMAT_A32_SINT:
 150         case PIPE_FORMAT_L32_UINT:
 151         case PIPE_FORMAT_L32_SINT:
 152         case PIPE_FORMAT_I32_UINT:
 153         case PIPE_FORMAT_I32_SINT:
 154 */
 155
 156         case PIPE_FORMAT_R32_FLOAT:
 157         case PIPE_FORMAT_A32_FLOAT:
 158         case PIPE_FORMAT_L32_FLOAT:
 159         case PIPE_FORMAT_I32_FLOAT:
 160         case PIPE_FORMAT_Z32_FLOAT:
 161                 return VFMT_FLOAT_32;
 162
 163         case PIPE_FORMAT_R32_FIXED:
 164                 return VFMT_FIXED_32;
 165
 166         /* 64-bit buffers. */
 167         case PIPE_FORMAT_R16G16B16A16_UNORM:
 168                 return VFMT_NORM_USHORT_16_16_16_16;
 169
 170         case PIPE_FORMAT_R16G16B16A16_SNORM:
 171                 return VFMT_NORM_SHORT_16_16_16_16;
 172
 173         case PIPE_FORMAT_R16G16B16A16_UINT:
 174                 return VFMT_USHORT_16_16_16_16;
 175
 176         case PIPE_FORMAT_R16G16B16A16_SINT:
 177                 return VFMT_SHORT_16_16_16_16;
 178
 179         case PIPE_FORMAT_R32G32_FLOAT:
 180         case PIPE_FORMAT_L32A32_FLOAT:
 181                 return VFMT_FLOAT_32_32;
 182
 183         case PIPE_FORMAT_R32G32_FIXED:
 184                 return VFMT_FIXED_32_32;
 185
 186 /* TODO probably need gles3 blob drivers to find the 32bit int formats:
 187         case PIPE_FORMAT_R32G32_SINT:
 188         case PIPE_FORMAT_R32G32_UINT:
 189         case PIPE_FORMAT_L32A32_UINT:
 190         case PIPE_FORMAT_L32A32_SINT:
 191 */
 192
 193         /* 96-bit buffers. */
 194         case PIPE_FORMAT_R32G32B32_FLOAT:
 195                 return VFMT_FLOAT_32_32_32;
 196
 197         case PIPE_FORMAT_R32G32B32_FIXED:
 198                 return VFMT_FIXED_32_32_32;
 199
 200         /* 128-bit buffers. */
 201         case PIPE_FORMAT_R32G32B32A32_FLOAT:
 202                 return VFMT_FLOAT_32_32_32_32;
 203
 204         case PIPE_FORMAT_R32G32B32A32_FIXED:
 205                 return VFMT_FIXED_32_32_32_32;
 206
 207 /* TODO probably need gles3 blob drivers to find the 32bit int formats:
 208         case PIPE_FORMAT_R32G32B32A32_SNORM:
 209         case PIPE_FORMAT_R32G32B32A32_UNORM:
 210         case PIPE_FORMAT_R32G32B32A32_SINT:
 211         case PIPE_FORMAT_R32G32B32A32_UINT:
 212 */
 213
 214         default:
 215                 return ~0;
 216         }
 217 }
 218
 219 /* convert pipe format to texture sampler format: */
 220 enum a3xx_tex_fmt
 221 fd3_pipe2tex(enum pipe_format format)
 222 {
 223         switch (format) {
 224         case PIPE_FORMAT_L8_UNORM:
 225         case PIPE_FORMAT_A8_UNORM:
 226         case PIPE_FORMAT_I8_UNORM:
 227                 return TFMT_NORM_UINT_8;
 228
 229         case PIPE_FORMAT_B8G8R8A8_UNORM:
 230         case PIPE_FORMAT_B8G8R8X8_UNORM:
 231         case PIPE_FORMAT_R8G8B8A8_UNORM:
 232                 return TFMT_NORM_UINT_8_8_8_8;
 233
 234         case PIPE_FORMAT_Z24X8_UNORM:
 235                 return TFMT_NORM_UINT_X8Z24;
 236
 237         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 238                 return TFMT_NORM_UINT_8_8_8_8;
 239
 240         case PIPE_FORMAT_Z16_UNORM:
 241                 return TFMT_NORM_UINT_8_8;
 242
 243         // TODO add more..
 244
 245         default:
 246                 return ~0;
 247         }
 248 }
 249
 250 enum a3xx_tex_fetchsize
 251 fd3_pipe2fetchsize(enum pipe_format format)
 252 {
 253         switch (format) {
 254         case PIPE_FORMAT_L8_UNORM:
 255         case PIPE_FORMAT_A8_UNORM:
 256         case PIPE_FORMAT_I8_UNORM:
 257                 return TFETCH_1_BYTE;
 258
 259         case PIPE_FORMAT_Z16_UNORM:
 260                 return TFETCH_2_BYTE;
 261
 262         case PIPE_FORMAT_B8G8R8A8_UNORM:
 263         case PIPE_FORMAT_B8G8R8X8_UNORM:
 264         case PIPE_FORMAT_Z24X8_UNORM:
 265         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 266                 return TFETCH_4_BYTE;
 267
 268         // TODO add more..
 269
 270         default:
 271                 return TFETCH_DISABLE;  /* safe default */
 272         }
 273 }
 274
 275 /* convert pipe format to MRT / copydest format used for render-target: */
 276 enum a3xx_color_fmt
 277 fd3_pipe2color(enum pipe_format format)
 278 {
 279         switch (format) {
 280         case PIPE_FORMAT_B8G8R8A8_UNORM:
 281         case PIPE_FORMAT_B8G8R8X8_UNORM:
 282         case PIPE_FORMAT_R8G8B8A8_UNORM:
 283                 return RB_R8G8B8A8_UNORM;
 284
 285         case PIPE_FORMAT_Z16_UNORM:
 286                 return RB_Z16_UNORM;
 287
 288         case PIPE_FORMAT_Z24X8_UNORM:
 289         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 290                 /* for DEPTHX_24_8, blob driver also seems to use R8G8B8A8 fmt.. */
 291                 return RB_R8G8B8A8_UNORM;
 292
 293         case PIPE_FORMAT_R8_UNORM:
 294         case PIPE_FORMAT_L8_UNORM:
 295         case PIPE_FORMAT_A8_UNORM:
 296                 return RB_A8_UNORM;
 297
 298         // TODO add more..
 299
 300         default:
 301                 return ~0;
 302         }
 303 }
 304
 305 /* we need to special case a bit the depth/stencil restore, because we are
 306  * using the texture sampler to blit into the depth/stencil buffer, *not*
 307  * into a color buffer.  Otherwise fd3_tex_swiz() will do the wrong thing,
 308  * as it is assuming that you are sampling into normal render target..
 309  */
 310 enum pipe_format
 311 fd3_gmem_restore_format(enum pipe_format format)
 312 {
 313         switch (format) {
 314         case PIPE_FORMAT_Z24X8_UNORM:
 315         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 316         case PIPE_FORMAT_Z16_UNORM:
 317                 return PIPE_FORMAT_B8G8R8A8_UNORM;
 318         default:
 319                 return format;
 320         }
 321 }
 322
 323 enum a3xx_color_swap
 324 fd3_pipe2swap(enum pipe_format format)
 325 {
 326         switch (format) {
 327         case PIPE_FORMAT_B8G8R8A8_UNORM:
 328         case PIPE_FORMAT_B8G8R8X8_UNORM:
 329                 return WXYZ;
 330
 331         case PIPE_FORMAT_R8G8B8A8_UNORM:
 332         case PIPE_FORMAT_R8G8B8X8_UNORM:
 333         case PIPE_FORMAT_Z24X8_UNORM:
 334         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 335         default:
 336                 return WZYX;
 337         }
 338 }
 339
 340 static inline enum a3xx_tex_swiz
 341 tex_swiz(unsigned swiz)
 342 {
 343         switch (swiz) {
 344         default:
 345         case PIPE_SWIZZLE_RED:   return A3XX_TEX_X;
 346         case PIPE_SWIZZLE_GREEN: return A3XX_TEX_Y;
 347         case PIPE_SWIZZLE_BLUE:  return A3XX_TEX_Z;
 348         case PIPE_SWIZZLE_ALPHA: return A3XX_TEX_W;
 349         case PIPE_SWIZZLE_ZERO:  return A3XX_TEX_ZERO;
 350         case PIPE_SWIZZLE_ONE:   return A3XX_TEX_ONE;
 351         }
 352 }
 353
 354 uint32_t
 355 fd3_tex_swiz(enum pipe_format format, unsigned swizzle_r, unsigned swizzle_g,
 356                 unsigned swizzle_b, unsigned swizzle_a)
 357 {
 358         const struct util_format_description *desc =
 359                         util_format_description(format);
 360         uint8_t swiz[] = {
 361                         swizzle_r, swizzle_g, swizzle_b, swizzle_a,
 362                         PIPE_SWIZZLE_ZERO, PIPE_SWIZZLE_ONE,
 363                         PIPE_SWIZZLE_ONE, PIPE_SWIZZLE_ONE,
 364         };
 365
 366         return A3XX_TEX_CONST_0_SWIZ_X(tex_swiz(swiz[desc->swizzle[0]])) |
 367                         A3XX_TEX_CONST_0_SWIZ_Y(tex_swiz(swiz[desc->swizzle[1]])) |
 368                         A3XX_TEX_CONST_0_SWIZ_Z(tex_swiz(swiz[desc->swizzle[2]])) |
 369                         A3XX_TEX_CONST_0_SWIZ_W(tex_swiz(swiz[desc->swizzle[3]]));
 370 }