src/gallium/drivers/freedreno/a4xx/fd4_format.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2014 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 "fd4_format.h"
  33
  34
  35 /* Specifies the table of all the formats and their features. Also supplies
  36  * the helpers that look up various data in those tables.
  37  */
  38
  39 struct fd4_format {
  40         enum a4xx_vtx_fmt vtx;
  41         enum a4xx_tex_fmt tex;
  42         enum a4xx_color_fmt rb;
  43         enum a3xx_color_swap swap;
  44         boolean present;
  45 };
  46
  47 #define RB4_NONE ~0
  48
  49 /* vertex + texture */
  50 #define VT(pipe, fmt, rbfmt, swapfmt) \
  51         [PIPE_FORMAT_ ## pipe] = { \
  52                 .present = 1, \
  53                 .vtx = VFMT4_ ## fmt, \
  54                 .tex = TFMT4_ ## fmt, \
  55                 .rb = RB4_ ## rbfmt, \
  56                 .swap = swapfmt \
  57         }
  58
  59 /* texture-only */
  60 #define _T(pipe, fmt, rbfmt, swapfmt) \
  61         [PIPE_FORMAT_ ## pipe] = { \
  62                 .present = 1, \
  63                 .vtx = ~0, \
  64                 .tex = TFMT4_ ## fmt, \
  65                 .rb = RB4_ ## rbfmt, \
  66                 .swap = swapfmt \
  67         }
  68
  69 /* vertex-only */
  70 #define V_(pipe, fmt, rbfmt, swapfmt) \
  71         [PIPE_FORMAT_ ## pipe] = { \
  72                 .present = 1, \
  73                 .vtx = VFMT4_ ## fmt, \
  74                 .tex = ~0, \
  75                 .rb = RB4_ ## rbfmt, \
  76                 .swap = swapfmt \
  77         }
  78
  79 static struct fd4_format formats[PIPE_FORMAT_COUNT] = {
  80         /* 8-bit */
  81         VT(R8_UNORM,   8_UNORM, NONE,     WZYX),
  82         V_(R8_SNORM,   8_SNORM, NONE,     WZYX),
  83         V_(R8_UINT,    8_UINT,  NONE,     WZYX),
  84         V_(R8_SINT,    8_SINT,  NONE,     WZYX),
  85         V_(R8_USCALED, 8_UINT,  NONE,     WZYX),
  86         V_(R8_SSCALED, 8_UINT,  NONE,     WZYX),
  87
  88         _T(A8_UNORM,   8_UNORM, A8_UNORM, WZYX),
  89         _T(L8_UNORM,   8_UNORM, NONE,     WZYX),
  90         _T(I8_UNORM,   8_UNORM, NONE,     WZYX),
  91
  92         /* 16-bit */
  93         V_(R16_UNORM,   16_UNORM, NONE,     WZYX),
  94         V_(R16_SNORM,   16_SNORM, NONE,     WZYX),
  95         V_(R16_UINT,    16_UINT,  NONE,     WZYX),
  96         V_(R16_SINT,    16_SINT,  NONE,     WZYX),
  97         V_(R16_USCALED, 16_UINT,  NONE,     WZYX),
  98         V_(R16_SSCALED, 16_UINT,  NONE,     WZYX),
  99         VT(R16_FLOAT,   16_FLOAT, NONE,     WZYX),
 100
 101         VT(R8G8_UNORM,   8_8_UNORM, NONE,       WZYX),
 102         V_(R8G8_SNORM,   8_8_SNORM, NONE,       WZYX),
 103         V_(R8G8_UINT,    8_8_UINT,  NONE,       WZYX),
 104         V_(R8G8_SINT,    8_8_SINT,  NONE,       WZYX),
 105         V_(R8G8_USCALED, 8_8_UINT,  NONE,       WZYX),
 106         V_(R8G8_SSCALED, 8_8_SINT,  NONE,       WZYX),
 107
 108         /*_T(B5G6R5_UNORM,   5_6_5_UNORM,   R5G6B5_UNORM,   WXYZ),*/
 109         _T(B5G5R5A1_UNORM, 5_5_5_1_UNORM, NONE, WXYZ),
 110         _T(B5G5R5X1_UNORM, 5_5_5_1_UNORM, NONE, WXYZ),
 111         _T(B4G4R4A4_UNORM, 4_4_4_4_UNORM, NONE, WXYZ),
 112
 113         /* 24-bit */
 114         V_(R8G8B8_UNORM,   8_8_8_UNORM, NONE, WZYX),
 115         V_(R8G8B8_SNORM,   8_8_8_SNORM, NONE, WZYX),
 116         V_(R8G8B8_UINT,    8_8_8_UINT,  NONE, WZYX),
 117         V_(R8G8B8_SINT,    8_8_8_SINT,  NONE, WZYX),
 118         V_(R8G8B8_USCALED, 8_8_8_UINT,  NONE, WZYX),
 119         V_(R8G8B8_SSCALED, 8_8_8_SINT,  NONE, WZYX),
 120
 121         /* 32-bit */
 122         VT(R32_FLOAT,   32_FLOAT, NONE,     WZYX),
 123         V_(R32_FIXED,   32_FIXED, NONE,     WZYX),
 124
 125         V_(R16G16_UNORM,   16_16_UNORM, NONE,        WZYX),
 126         V_(R16G16_SNORM,   16_16_SNORM, NONE,        WZYX),
 127         V_(R16G16_UINT,    16_16_UINT,  NONE,        WZYX),
 128         V_(R16G16_SINT,    16_16_SINT,  NONE,        WZYX),
 129         V_(R16G16_USCALED, 16_16_UINT,  NONE,        WZYX),
 130         V_(R16G16_SSCALED, 16_16_SINT,  NONE,        WZYX),
 131         VT(R16G16_FLOAT,   16_16_FLOAT, NONE,        WZYX),
 132
 133         VT(R8G8B8A8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, WZYX),
 134         _T(R8G8B8X8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, WZYX),
 135         _T(R8G8B8A8_SRGB,    8_8_8_8_UNORM, NONE,           WZYX),
 136         _T(R8G8B8X8_SRGB,    8_8_8_8_UNORM, NONE,           WZYX),
 137         V_(R8G8B8A8_SNORM,   8_8_8_8_SNORM, NONE,           WZYX),
 138         V_(R8G8B8A8_UINT,    8_8_8_8_UINT,  NONE,           WZYX),
 139         V_(R8G8B8A8_SINT,    8_8_8_8_SINT,  NONE,           WZYX),
 140         V_(R8G8B8A8_USCALED, 8_8_8_8_UINT,  NONE,           WZYX),
 141         V_(R8G8B8A8_SSCALED, 8_8_8_8_SINT,  NONE,           WZYX),
 142
 143         VT(B8G8R8A8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, WXYZ),
 144         _T(B8G8R8X8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, WXYZ),
 145         VT(B8G8R8A8_SRGB,    8_8_8_8_UNORM, NONE,           WXYZ),
 146         _T(B8G8R8X8_SRGB,    8_8_8_8_UNORM, NONE,           WXYZ),
 147
 148         VT(A8B8G8R8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, XYZW),
 149         _T(X8B8G8R8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, XYZW),
 150         _T(A8B8G8R8_SRGB,    8_8_8_8_UNORM, NONE,           XYZW),
 151         _T(X8B8G8R8_SRGB,    8_8_8_8_UNORM, NONE,           XYZW),
 152
 153         VT(A8R8G8B8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, ZYXW),
 154         _T(X8R8G8B8_UNORM,   8_8_8_8_UNORM, R8G8B8A8_UNORM, ZYXW),
 155         _T(A8R8G8B8_SRGB,    8_8_8_8_UNORM, NONE,           ZYXW),
 156         _T(X8R8G8B8_SRGB,    8_8_8_8_UNORM, NONE,           ZYXW),
 157
 158         V_(R10G10B10A2_UNORM,   10_10_10_2_UNORM, NONE/*R10G10B10A2_UNORM*/, WZYX),
 159         V_(R10G10B10A2_SNORM,   10_10_10_2_SNORM, NONE,              WZYX),
 160         V_(R10G10B10A2_UINT,    10_10_10_2_UINT,  NONE,              WZYX),
 161         V_(R10G10B10A2_USCALED, 10_10_10_2_UINT,  NONE,              WZYX),
 162         V_(R10G10B10A2_SSCALED, 10_10_10_2_SINT,  NONE,              WZYX),
 163
 164         _T(Z24X8_UNORM,       X8Z24_UNORM, R8G8B8A8_UNORM, WZYX),
 165         _T(Z24_UNORM_S8_UINT, X8Z24_UNORM, R8G8B8A8_UNORM, WZYX),
 166         /*_T(Z32_FLOAT,         Z32_FLOAT,   R8G8B8A8_UNORM, WZYX),*/
 167
 168         /* 48-bit */
 169         V_(R16G16B16_UNORM,   16_16_16_UNORM, NONE, WZYX),
 170         V_(R16G16B16_SNORM,   16_16_16_SNORM, NONE, WZYX),
 171         V_(R16G16B16_UINT,    16_16_16_UINT,  NONE, WZYX),
 172         V_(R16G16B16_SINT,    16_16_16_SINT,  NONE, WZYX),
 173         V_(R16G16B16_USCALED, 16_16_16_UINT,  NONE, WZYX),
 174         V_(R16G16B16_SSCALED, 16_16_16_SINT,  NONE, WZYX),
 175         V_(R16G16B16_FLOAT,   16_16_16_FLOAT, NONE, WZYX),
 176
 177         /* 64-bit */
 178         V_(R16G16B16A16_UNORM,   16_16_16_16_UNORM, NONE,               WZYX),
 179         V_(R16G16B16A16_SNORM,   16_16_16_16_SNORM, NONE,               WZYX),
 180         V_(R16G16B16A16_UINT,    16_16_16_16_UINT,  NONE,               WZYX),
 181         V_(R16G16B16A16_SINT,    16_16_16_16_SINT,  NONE,               WZYX),
 182         V_(R16G16B16A16_USCALED, 16_16_16_16_UINT,  NONE,               WZYX),
 183         V_(R16G16B16A16_SSCALED, 16_16_16_16_SINT,  NONE,               WZYX),
 184         VT(R16G16B16A16_FLOAT,   16_16_16_16_FLOAT, NONE,               WZYX),
 185         _T(R16G16B16X16_FLOAT,   16_16_16_16_FLOAT, NONE,               WZYX),
 186
 187         VT(R32G32_FLOAT,   32_32_FLOAT, NONE,        WZYX),
 188         V_(R32G32_FIXED,   32_32_FIXED, NONE,        WZYX),
 189
 190         /* 96-bit */
 191         V_(R32G32B32_FLOAT,   32_32_32_FLOAT, NONE, WZYX),
 192         V_(R32G32B32_FIXED,   32_32_32_FIXED, NONE, WZYX),
 193
 194         /* 128-bit */
 195         VT(R32G32B32A32_FLOAT,   32_32_32_32_FLOAT, NONE,               WZYX),
 196         _T(R32G32B32X32_FLOAT,   32_32_32_32_FLOAT, NONE,               WZYX),
 197         V_(R32G32B32A32_FIXED,   32_32_32_32_FIXED, NONE,               WZYX),
 198 };
 199
 200 /* convert pipe format to vertex buffer format: */
 201 enum a4xx_vtx_fmt
 202 fd4_pipe2vtx(enum pipe_format format)
 203 {
 204         if (!formats[format].present)
 205                 return ~0;
 206         return formats[format].vtx;
 207 }
 208
 209 /* convert pipe format to texture sampler format: */
 210 enum a4xx_tex_fmt
 211 fd4_pipe2tex(enum pipe_format format)
 212 {
 213         if (!formats[format].present)
 214                 return ~0;
 215         return formats[format].tex;
 216 }
 217
 218 /* convert pipe format to MRT / copydest format used for render-target: */
 219 enum a4xx_color_fmt
 220 fd4_pipe2color(enum pipe_format format)
 221 {
 222         if (!formats[format].present)
 223                 return ~0;
 224         return formats[format].rb;
 225 }
 226
 227 enum a3xx_color_swap
 228 fd4_pipe2swap(enum pipe_format format)
 229 {
 230         if (!formats[format].present)
 231                 return WZYX;
 232         return formats[format].swap;
 233 }
 234
 235 /* we need to special case a bit the depth/stencil restore, because we are
 236  * using the texture sampler to blit into the depth/stencil buffer, *not*
 237  * into a color buffer.  Otherwise fd4_tex_swiz() will do the wrong thing,
 238  * as it is assuming that you are sampling into normal render target..
 239  *
 240  * TODO looks like we can probably share w/ a3xx..
 241  */
 242 enum pipe_format
 243 fd4_gmem_restore_format(enum pipe_format format)
 244 {
 245         switch (format) {
 246         case PIPE_FORMAT_Z24X8_UNORM:
 247         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 248                 return PIPE_FORMAT_R8G8B8A8_UNORM;
 249         case PIPE_FORMAT_Z16_UNORM:
 250                 return PIPE_FORMAT_R8G8_UNORM;
 251         default:
 252                 return format;
 253         }
 254 }
 255
 256 enum a4xx_depth_format
 257 fd4_pipe2depth(enum pipe_format format)
 258 {
 259         switch (format) {
 260         case PIPE_FORMAT_Z16_UNORM:
 261                 return DEPTH4_16;
 262         case PIPE_FORMAT_Z24X8_UNORM:
 263         case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 264         case PIPE_FORMAT_X8Z24_UNORM:
 265         case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 266                 return DEPTH4_24_8;
 267         default:
 268                 return ~0;
 269         }
 270 }
 271
 272 static inline enum a4xx_tex_swiz
 273 tex_swiz(unsigned swiz)
 274 {
 275         switch (swiz) {
 276         default:
 277         case PIPE_SWIZZLE_RED:   return A4XX_TEX_X;
 278         case PIPE_SWIZZLE_GREEN: return A4XX_TEX_Y;
 279         case PIPE_SWIZZLE_BLUE:  return A4XX_TEX_Z;
 280         case PIPE_SWIZZLE_ALPHA: return A4XX_TEX_W;
 281         case PIPE_SWIZZLE_ZERO:  return A4XX_TEX_ZERO;
 282         case PIPE_SWIZZLE_ONE:   return A4XX_TEX_ONE;
 283         }
 284 }
 285
 286 uint32_t
 287 fd4_tex_swiz(enum pipe_format format, unsigned swizzle_r, unsigned swizzle_g,
 288                 unsigned swizzle_b, unsigned swizzle_a)
 289 {
 290         const struct util_format_description *desc =
 291                         util_format_description(format);
 292         unsigned char swiz[4] = {
 293                         swizzle_r, swizzle_g, swizzle_b, swizzle_a,
 294         }, rswiz[4];
 295
 296         util_format_compose_swizzles(desc->swizzle, swiz, rswiz);
 297
 298         return A4XX_TEX_CONST_0_SWIZ_X(tex_swiz(rswiz[0])) |
 299                         A4XX_TEX_CONST_0_SWIZ_Y(tex_swiz(rswiz[1])) |
 300                         A4XX_TEX_CONST_0_SWIZ_Z(tex_swiz(rswiz[2])) |
 301                         A4XX_TEX_CONST_0_SWIZ_W(tex_swiz(rswiz[3]));
 302 }