src/gallium/drivers/freedreno/a3xx/fd3_texture.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_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 "fd3_texture.h"
  36 #include "fd3_format.h"
  37
  38 static enum a3xx_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 A3XX_TEX_REPEAT;
  50         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  51                 return A3XX_TEX_CLAMP_TO_EDGE;
  52         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  53                 return A3XX_TEX_CLAMP_TO_BORDER;
  54         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  55                 /* only works for PoT.. need to emulate otherwise! */
  56                 return A3XX_TEX_MIRROR_CLAMP;
  57         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  58                 return A3XX_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 a3xx_tex_filter
  71 tex_filter(unsigned filter, bool aniso)
  72 {
  73         switch (filter) {
  74         case PIPE_TEX_FILTER_NEAREST:
  75                 return A3XX_TEX_NEAREST;
  76         case PIPE_TEX_FILTER_LINEAR:
  77                 return aniso ? A3XX_TEX_ANISO : A3XX_TEX_LINEAR;
  78         default:
  79                 DBG("invalid filter: %u", filter);
  80                 return 0;
  81         }
  82 }
  83
  84 static void *
  85 fd3_sampler_state_create(struct pipe_context *pctx,
  86                 const struct pipe_sampler_state *cso)
  87 {
  88         struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_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(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
 118                         COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
 119                         A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
 120                         A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
 121                         A3XX_TEX_SAMP_0_ANISO(aniso) |
 122                         A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge)) |
 123                         A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge)) |
 124                         A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge));
 125
 126         if (cso->compare_mode)
 127                 so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 128
 129         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 130                 so->texsamp1 =
 131                                 A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias) |
 132                                 A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 133                                 A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 134         } else {
 135                 so->texsamp1 = 0x00000000;
 136         }
 137
 138         return so;
 139 }
 140
 141 static void
 142 fd3_sampler_states_bind(struct pipe_context *pctx,
 143                 unsigned shader, unsigned start,
 144                 unsigned nr, void **hwcso)
 145 {
 146         struct fd_context *ctx = fd_context(pctx);
 147         struct fd3_context *fd3_ctx = fd3_context(ctx);
 148         uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
 149         unsigned i;
 150
 151         for (i = 0; i < nr; i++) {
 152                 if (hwcso[i]) {
 153                         struct fd3_sampler_stateobj *sampler =
 154                                         fd3_sampler_stateobj(hwcso[i]);
 155                         if (sampler->saturate_s)
 156                                 saturate_s |= (1 << i);
 157                         if (sampler->saturate_t)
 158                                 saturate_t |= (1 << i);
 159                         if (sampler->saturate_r)
 160                                 saturate_r |= (1 << i);
 161                 }
 162         }
 163
 164         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
 165
 166         if (shader == PIPE_SHADER_FRAGMENT) {
 167                 fd3_ctx->fsaturate =
 168                         (saturate_s != 0) ||
 169                         (saturate_t != 0) ||
 170                         (saturate_r != 0);
 171                 fd3_ctx->fsaturate_s = saturate_s;
 172                 fd3_ctx->fsaturate_t = saturate_t;
 173                 fd3_ctx->fsaturate_r = saturate_r;
 174         } else if (shader == PIPE_SHADER_VERTEX) {
 175                 fd3_ctx->vsaturate =
 176                         (saturate_s != 0) ||
 177                         (saturate_t != 0) ||
 178                         (saturate_r != 0);
 179                 fd3_ctx->vsaturate_s = saturate_s;
 180                 fd3_ctx->vsaturate_t = saturate_t;
 181                 fd3_ctx->vsaturate_r = saturate_r;
 182         }
 183 }
 184
 185 static enum a3xx_tex_type
 186 tex_type(unsigned target)
 187 {
 188         switch (target) {
 189         default:
 190                 assert(0);
 191         case PIPE_BUFFER:
 192         case PIPE_TEXTURE_1D:
 193         case PIPE_TEXTURE_1D_ARRAY:
 194                 return A3XX_TEX_1D;
 195         case PIPE_TEXTURE_RECT:
 196         case PIPE_TEXTURE_2D:
 197         case PIPE_TEXTURE_2D_ARRAY:
 198                 return A3XX_TEX_2D;
 199         case PIPE_TEXTURE_3D:
 200                 return A3XX_TEX_3D;
 201         case PIPE_TEXTURE_CUBE:
 202         case PIPE_TEXTURE_CUBE_ARRAY:
 203                 return A3XX_TEX_CUBE;
 204         }
 205 }
 206
 207 static struct pipe_sampler_view *
 208 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 209                 const struct pipe_sampler_view *cso)
 210 {
 211         struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
 212         struct fd_resource *rsc = fd_resource(prsc);
 213         unsigned lvl = cso->u.tex.first_level;
 214         unsigned miplevels = cso->u.tex.last_level - lvl;
 215         uint32_t sz2 = 0;
 216
 217         if (!so)
 218                 return NULL;
 219
 220         so->base = *cso;
 221         pipe_reference(NULL, &prsc->reference);
 222         so->base.texture = prsc;
 223         so->base.reference.count = 1;
 224         so->base.context = pctx;
 225
 226         so->texconst0 =
 227                         A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 228                         A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
 229                         A3XX_TEX_CONST_0_MIPLVLS(miplevels) |
 230                         fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 231                                                 cso->swizzle_b, cso->swizzle_a);
 232
 233         if (util_format_is_srgb(cso->format))
 234                 so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
 235
 236         so->texconst1 =
 237                         A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 238                         A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 239                         A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 240         /* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
 241         so->texconst2 =
 242                         A3XX_TEX_CONST_2_PITCH(rsc->slices[lvl].pitch * rsc->cpp);
 243         switch (prsc->target) {
 244         case PIPE_TEXTURE_1D_ARRAY:
 245         case PIPE_TEXTURE_2D_ARRAY:
 246                 so->texconst3 =
 247                                 A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) |
 248                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0);
 249                 break;
 250         case PIPE_TEXTURE_3D:
 251                 so->texconst3 =
 252                                 A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
 253                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[lvl].size0);
 254                 while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
 255                         sz2 = rsc->slices[++lvl].size0;
 256                 so->texconst3 |= A3XX_TEX_CONST_3_LAYERSZ2(sz2);
 257                 break;
 258         default:
 259                 so->texconst3 = 0x00000000;
 260                 break;
 261         }
 262
 263         return &so->base;
 264 }
 265
 266 static void
 267 fd3_set_sampler_views(struct pipe_context *pctx, unsigned shader,
 268                                           unsigned start, unsigned nr,
 269                                           struct pipe_sampler_view **views)
 270 {
 271         struct fd_context *ctx = fd_context(pctx);
 272         struct fd3_context *fd3_ctx = fd3_context(ctx);
 273         struct fd_texture_stateobj *tex;
 274         uint16_t integer_s = 0, *ptr;
 275         int i;
 276
 277         fd_set_sampler_views(pctx, shader, start, nr, views);
 278
 279         switch (shader) {
 280         case PIPE_SHADER_FRAGMENT:
 281                 tex = &ctx->fragtex;
 282                 ptr = &fd3_ctx->finteger_s;
 283                 break;
 284         case PIPE_SHADER_VERTEX:
 285                 tex = &ctx->verttex;
 286                 ptr = &fd3_ctx->vinteger_s;
 287                 break;
 288         default:
 289                 return;
 290         }
 291
 292         for (i = 0; i < tex->num_textures; i++)
 293                 if (util_format_is_pure_integer(tex->textures[i]->format))
 294                         integer_s |= 1 << i;
 295         *ptr = integer_s;
 296 }
 297
 298
 299 void
 300 fd3_texture_init(struct pipe_context *pctx)
 301 {
 302         pctx->create_sampler_state = fd3_sampler_state_create;
 303         pctx->bind_sampler_states = fd3_sampler_states_bind;
 304         pctx->create_sampler_view = fd3_sampler_view_create;
 305         pctx->set_sampler_views = fd3_set_sampler_views;
 306 }