src/gallium/drivers/freedreno/a4xx/fd4_texture.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_state.h"
  30 #include "util/u_string.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_format.h"
  34
  35 #include "fd4_texture.h"
  36 #include "fd4_format.h"
  37
  38 static enum a4xx_tex_clamp
  39 tex_clamp(unsigned wrap, bool clamp_to_edge)
  40 {
  41         /* Hardware does not support _CLAMP, but we emulate it: */
  42         if (wrap == PIPE_TEX_WRAP_CLAMP) {
  43                 wrap = (clamp_to_edge) ?
  44                         PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
  45         }
  46
  47         switch (wrap) {
  48         case PIPE_TEX_WRAP_REPEAT:
  49                 return A4XX_TEX_REPEAT;
  50         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  51                 return A4XX_TEX_CLAMP_TO_EDGE;
  52         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  53                 return A4XX_TEX_CLAMP_TO_BORDER;
  54         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  55                 /* only works for PoT.. need to emulate otherwise! */
  56                 return A4XX_TEX_MIRROR_CLAMP;
  57         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  58                 return A4XX_TEX_MIRROR_REPEAT;
  59         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  60         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  61                 /* these two we could perhaps emulate, but we currently
  62                  * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
  63                  */
  64         default:
  65                 DBG("invalid wrap: %u", wrap);
  66                 return 0;
  67         }
  68 }
  69
  70 static enum a4xx_tex_filter
  71 tex_filter(unsigned filter, bool aniso)
  72 {
  73         switch (filter) {
  74         case PIPE_TEX_FILTER_NEAREST:
  75                 return A4XX_TEX_NEAREST;
  76         case PIPE_TEX_FILTER_LINEAR:
  77                 return aniso ? A4XX_TEX_ANISO : A4XX_TEX_LINEAR;
  78         default:
  79                 DBG("invalid filter: %u", filter);
  80                 return 0;
  81         }
  82 }
  83
  84 static void *
  85 fd4_sampler_state_create(struct pipe_context *pctx,
  86                 const struct pipe_sampler_state *cso)
  87 {
  88         struct fd4_sampler_stateobj *so = CALLOC_STRUCT(fd4_sampler_stateobj);
  89         unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
  90         bool miplinear = false;
  91         bool clamp_to_edge;
  92
  93         if (!so)
  94                 return NULL;
  95
  96         if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  97                 miplinear = true;
  98
  99         so->base = *cso;
 100
 101         /*
 102          * For nearest filtering, _CLAMP means _CLAMP_TO_EDGE;  for linear
 103          * filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
 104          * clamping the texture coordinates to [0.0, 1.0].
 105          *
 106          * The clamping will be taken care of in the shaders.  There are two
 107          * filters here, but let the minification one has a say.
 108          */
 109         clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
 110         if (!clamp_to_edge) {
 111                 so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
 112                 so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
 113                 so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
 114         }
 115
 116         so->texsamp0 =
 117                 COND(miplinear, A4XX_TEX_SAMP_0_MIPFILTER_LINEAR_NEAR) |
 118                 A4XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
 119                 A4XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
 120                 A4XX_TEX_SAMP_0_ANISO(aniso) |
 121                 A4XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge)) |
 122                 A4XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge)) |
 123                 A4XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge));
 124
 125         so->texsamp1 =
 126 //              COND(miplinear, A4XX_TEX_SAMP_1_MIPFILTER_LINEAR_FAR) |
 127                 COND(!cso->seamless_cube_map, A4XX_TEX_SAMP_1_CUBEMAPSEAMLESSFILTOFF) |
 128                 COND(!cso->normalized_coords, A4XX_TEX_SAMP_1_UNNORM_COORDS);
 129
 130         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 131                 so->texsamp0 |= A4XX_TEX_SAMP_0_LOD_BIAS(cso->lod_bias);
 132                 so->texsamp1 |=
 133                         A4XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 134                         A4XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 135         }
 136
 137         if (cso->compare_mode)
 138                 so->texsamp1 |= A4XX_TEX_SAMP_1_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 139
 140         return so;
 141 }
 142
 143 static void
 144 fd4_sampler_states_bind(struct pipe_context *pctx,
 145                 unsigned shader, unsigned start,
 146                 unsigned nr, void **hwcso)
 147 {
 148         struct fd_context *ctx = fd_context(pctx);
 149         struct fd4_context *fd4_ctx = fd4_context(ctx);
 150         uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
 151         unsigned i;
 152
 153         if (!hwcso)
 154                 nr = 0;
 155
 156         for (i = 0; i < nr; i++) {
 157                 if (hwcso[i]) {
 158                         struct fd4_sampler_stateobj *sampler =
 159                                         fd4_sampler_stateobj(hwcso[i]);
 160                         if (sampler->saturate_s)
 161                                 saturate_s |= (1 << i);
 162                         if (sampler->saturate_t)
 163                                 saturate_t |= (1 << i);
 164                         if (sampler->saturate_r)
 165                                 saturate_r |= (1 << i);
 166                 }
 167         }
 168
 169         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
 170
 171         if (shader == PIPE_SHADER_FRAGMENT) {
 172                 fd4_ctx->fsaturate =
 173                         (saturate_s != 0) ||
 174                         (saturate_t != 0) ||
 175                         (saturate_r != 0);
 176                 fd4_ctx->fsaturate_s = saturate_s;
 177                 fd4_ctx->fsaturate_t = saturate_t;
 178                 fd4_ctx->fsaturate_r = saturate_r;
 179         } else if (shader == PIPE_SHADER_VERTEX) {
 180                 fd4_ctx->vsaturate =
 181                         (saturate_s != 0) ||
 182                         (saturate_t != 0) ||
 183                         (saturate_r != 0);
 184                 fd4_ctx->vsaturate_s = saturate_s;
 185                 fd4_ctx->vsaturate_t = saturate_t;
 186                 fd4_ctx->vsaturate_r = saturate_r;
 187         }
 188 }
 189
 190 static enum a4xx_tex_type
 191 tex_type(unsigned target)
 192 {
 193         switch (target) {
 194         default:
 195                 assert(0);
 196         case PIPE_BUFFER:
 197         case PIPE_TEXTURE_1D:
 198         case PIPE_TEXTURE_1D_ARRAY:
 199                 return A4XX_TEX_1D;
 200         case PIPE_TEXTURE_RECT:
 201         case PIPE_TEXTURE_2D:
 202         case PIPE_TEXTURE_2D_ARRAY:
 203                 return A4XX_TEX_2D;
 204         case PIPE_TEXTURE_3D:
 205                 return A4XX_TEX_3D;
 206         case PIPE_TEXTURE_CUBE:
 207         case PIPE_TEXTURE_CUBE_ARRAY:
 208                 return A4XX_TEX_CUBE;
 209         }
 210 }
 211
 212 static struct pipe_sampler_view *
 213 fd4_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 214                 const struct pipe_sampler_view *cso)
 215 {
 216         struct fd4_pipe_sampler_view *so = CALLOC_STRUCT(fd4_pipe_sampler_view);
 217         struct fd_resource *rsc = fd_resource(prsc);
 218         unsigned lvl, layers;
 219         uint32_t sz2 = 0;
 220
 221         if (!so)
 222                 return NULL;
 223
 224         so->base = *cso;
 225         pipe_reference(NULL, &prsc->reference);
 226         so->base.texture = prsc;
 227         so->base.reference.count = 1;
 228         so->base.context = pctx;
 229
 230         so->texconst0 =
 231                 A4XX_TEX_CONST_0_TYPE(tex_type(cso->target)) |
 232                 A4XX_TEX_CONST_0_FMT(fd4_pipe2tex(cso->format)) |
 233                 fd4_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 234                                 cso->swizzle_b, cso->swizzle_a);
 235
 236         if (util_format_is_srgb(cso->format))
 237                 so->texconst0 |= A4XX_TEX_CONST_0_SRGB;
 238
 239         if (cso->target == PIPE_BUFFER) {
 240                 unsigned elements = cso->u.buf.last_element -
 241                         cso->u.buf.first_element + 1;
 242                 lvl = 0;
 243                 so->texconst1 =
 244                         A4XX_TEX_CONST_1_WIDTH(elements) |
 245                         A4XX_TEX_CONST_1_HEIGHT(1);
 246                 so->texconst2 =
 247                         A4XX_TEX_CONST_2_FETCHSIZE(fd4_pipe2fetchsize(cso->format)) |
 248                         A4XX_TEX_CONST_2_PITCH(elements * rsc->cpp);
 249                 so->offset = cso->u.buf.first_element *
 250                         util_format_get_blocksize(cso->format);
 251         } else {
 252                 unsigned miplevels;
 253
 254                 lvl = fd_sampler_first_level(cso);
 255                 miplevels = fd_sampler_last_level(cso) - lvl;
 256                 layers = cso->u.tex.last_layer - cso->u.tex.first_layer + 1;
 257
 258                 so->texconst0 |= A4XX_TEX_CONST_0_MIPLVLS(miplevels);
 259                 so->texconst1 =
 260                         A4XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 261                         A4XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 262                 so->texconst2 =
 263                         A4XX_TEX_CONST_2_FETCHSIZE(fd4_pipe2fetchsize(cso->format)) |
 264                         A4XX_TEX_CONST_2_PITCH(
 265                                         util_format_get_nblocksx(
 266                                                         cso->format, rsc->slices[lvl].pitch) * rsc->cpp);
 267                 so->offset = fd_resource_offset(rsc, lvl, cso->u.tex.first_layer);
 268         }
 269
 270         switch (cso->target) {
 271         case PIPE_TEXTURE_1D_ARRAY:
 272         case PIPE_TEXTURE_2D_ARRAY:
 273                 so->texconst3 =
 274                         A4XX_TEX_CONST_3_DEPTH(layers) |
 275                         A4XX_TEX_CONST_3_LAYERSZ(rsc->layer_size);
 276                 break;
 277         case PIPE_TEXTURE_CUBE:
 278         case PIPE_TEXTURE_CUBE_ARRAY:
 279                 so->texconst3 =
 280                         A4XX_TEX_CONST_3_DEPTH(layers / 6) |
 281                         A4XX_TEX_CONST_3_LAYERSZ(rsc->layer_size);
 282                 break;
 283         case PIPE_TEXTURE_3D:
 284                 so->texconst3 =
 285                         A4XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
 286                         A4XX_TEX_CONST_3_LAYERSZ(rsc->slices[lvl].size0);
 287                 while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
 288                         sz2 = rsc->slices[++lvl].size0;
 289                 so->texconst4 = A4XX_TEX_CONST_4_LAYERSZ(sz2);
 290                 break;
 291         default:
 292                 so->texconst3 = 0x00000000;
 293                 break;
 294         }
 295
 296         return &so->base;
 297 }
 298
 299 void
 300 fd4_texture_init(struct pipe_context *pctx)
 301 {
 302         pctx->create_sampler_state = fd4_sampler_state_create;
 303         pctx->bind_sampler_states = fd4_sampler_states_bind;
 304         pctx->create_sampler_view = fd4_sampler_view_create;
 305         pctx->set_sampler_views = fd_set_sampler_views;
 306 }