src/gallium/drivers/freedreno/a3xx/fd3_texture.c

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "pipe/p_state.h"
  28 #include "util/u_string.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_format.h"
  32
  33 #include "fd3_texture.h"
  34 #include "fd3_format.h"
  35
  36 static enum a3xx_tex_clamp
  37 tex_clamp(unsigned wrap, bool clamp_to_edge, bool *needs_border)
  38 {
  39         /* Hardware does not support _CLAMP, but we emulate it: */
  40         if (wrap == PIPE_TEX_WRAP_CLAMP) {
  41                 wrap = (clamp_to_edge) ?
  42                         PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
  43         }
  44
  45         switch (wrap) {
  46         case PIPE_TEX_WRAP_REPEAT:
  47                 return A3XX_TEX_REPEAT;
  48         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  49                 return A3XX_TEX_CLAMP_TO_EDGE;
  50         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  51                 *needs_border = true;
  52                 return A3XX_TEX_CLAMP_TO_BORDER;
  53         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  54                 /* only works for PoT.. need to emulate otherwise! */
  55                 return A3XX_TEX_MIRROR_CLAMP;
  56         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  57                 return A3XX_TEX_MIRROR_REPEAT;
  58         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  59         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  60                 /* these two we could perhaps emulate, but we currently
  61                  * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
  62                  */
  63         default:
  64                 DBG("invalid wrap: %u", wrap);
  65                 return 0;
  66         }
  67 }
  68
  69 static enum a3xx_tex_filter
  70 tex_filter(unsigned filter, bool aniso)
  71 {
  72         switch (filter) {
  73         case PIPE_TEX_FILTER_NEAREST:
  74                 return A3XX_TEX_NEAREST;
  75         case PIPE_TEX_FILTER_LINEAR:
  76                 return aniso ? A3XX_TEX_ANISO : A3XX_TEX_LINEAR;
  77         default:
  78                 DBG("invalid filter: %u", filter);
  79                 return 0;
  80         }
  81 }
  82
  83 static void *
  84 fd3_sampler_state_create(struct pipe_context *pctx,
  85                 const struct pipe_sampler_state *cso)
  86 {
  87         struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
  88         unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
  89         bool miplinear = false;
  90         bool clamp_to_edge;
  91
  92         if (!so)
  93                 return NULL;
  94
  95         if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  96                 miplinear = true;
  97
  98         so->base = *cso;
  99
 100         /*
 101          * For nearest filtering, _CLAMP means _CLAMP_TO_EDGE;  for linear
 102          * filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
 103          * clamping the texture coordinates to [0.0, 1.0].
 104          *
 105          * The clamping will be taken care of in the shaders.  There are two
 106          * filters here, but let the minification one has a say.
 107          */
 108         clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
 109         if (!clamp_to_edge) {
 110                 so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
 111                 so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
 112                 so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
 113         }
 114
 115         so->needs_border = false;
 116         so->texsamp0 =
 117                         COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
 118                         COND(!cso->seamless_cube_map, A3XX_TEX_SAMP_0_CUBEMAPSEAMLESSFILTOFF) |
 119                         COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
 120                         A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
 121                         A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
 122                         A3XX_TEX_SAMP_0_ANISO(aniso) |
 123                         A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) |
 124                         A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) |
 125                         A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));
 126
 127         if (cso->compare_mode)
 128                 so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 129
 130         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 131                 so->texsamp1 =
 132                                 A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias) |
 133                                 A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 134                                 A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 135         } else {
 136                 so->texsamp1 = 0x00000000;
 137         }
 138
 139         return so;
 140 }
 141
 142 static void
 143 fd3_sampler_states_bind(struct pipe_context *pctx,
 144                 enum pipe_shader_type shader, unsigned start,
 145                 unsigned nr, void **hwcso)
 146 {
 147         struct fd_context *ctx = fd_context(pctx);
 148         struct fd3_context *fd3_ctx = fd3_context(ctx);
 149         uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
 150         unsigned i;
 151
 152         if (!hwcso)
 153                 nr = 0;
 154
 155         for (i = 0; i < nr; i++) {
 156                 if (hwcso[i]) {
 157                         struct fd3_sampler_stateobj *sampler =
 158                                         fd3_sampler_stateobj(hwcso[i]);
 159                         if (sampler->saturate_s)
 160                                 saturate_s |= (1 << i);
 161                         if (sampler->saturate_t)
 162                                 saturate_t |= (1 << i);
 163                         if (sampler->saturate_r)
 164                                 saturate_r |= (1 << i);
 165                 }
 166         }
 167
 168         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
 169
 170         if (shader == PIPE_SHADER_FRAGMENT) {
 171                 fd3_ctx->fsaturate =
 172                         (saturate_s != 0) ||
 173                         (saturate_t != 0) ||
 174                         (saturate_r != 0);
 175                 fd3_ctx->fsaturate_s = saturate_s;
 176                 fd3_ctx->fsaturate_t = saturate_t;
 177                 fd3_ctx->fsaturate_r = saturate_r;
 178         } else if (shader == PIPE_SHADER_VERTEX) {
 179                 fd3_ctx->vsaturate =
 180                         (saturate_s != 0) ||
 181                         (saturate_t != 0) ||
 182                         (saturate_r != 0);
 183                 fd3_ctx->vsaturate_s = saturate_s;
 184                 fd3_ctx->vsaturate_t = saturate_t;
 185                 fd3_ctx->vsaturate_r = saturate_r;
 186         }
 187 }
 188
 189 static enum a3xx_tex_type
 190 tex_type(unsigned target)
 191 {
 192         switch (target) {
 193         default:
 194                 assert(0);
 195         case PIPE_BUFFER:
 196         case PIPE_TEXTURE_1D:
 197         case PIPE_TEXTURE_1D_ARRAY:
 198                 return A3XX_TEX_1D;
 199         case PIPE_TEXTURE_RECT:
 200         case PIPE_TEXTURE_2D:
 201         case PIPE_TEXTURE_2D_ARRAY:
 202                 return A3XX_TEX_2D;
 203         case PIPE_TEXTURE_3D:
 204                 return A3XX_TEX_3D;
 205         case PIPE_TEXTURE_CUBE:
 206         case PIPE_TEXTURE_CUBE_ARRAY:
 207                 return A3XX_TEX_CUBE;
 208         }
 209 }
 210
 211 static struct pipe_sampler_view *
 212 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 213                 const struct pipe_sampler_view *cso)
 214 {
 215         struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
 216         struct fd_resource *rsc = fd_resource(prsc);
 217         unsigned lvl;
 218         uint32_t sz2 = 0;
 219
 220         if (!so)
 221                 return NULL;
 222
 223         so->base = *cso;
 224         pipe_reference(NULL, &prsc->reference);
 225         so->base.texture = prsc;
 226         so->base.reference.count = 1;
 227         so->base.context = pctx;
 228
 229         so->texconst0 =
 230                         A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 231                         A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
 232                         fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 233                                                 cso->swizzle_b, cso->swizzle_a);
 234
 235         if (prsc->target == PIPE_BUFFER || util_format_is_pure_integer(cso->format))
 236                 so->texconst0 |= A3XX_TEX_CONST_0_NOCONVERT;
 237         if (util_format_is_srgb(cso->format))
 238                 so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
 239
 240         if (prsc->target == PIPE_BUFFER) {
 241                 lvl = 0;
 242                 so->texconst1 =
 243                         A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 244                         A3XX_TEX_CONST_1_WIDTH(cso->u.buf.size / util_format_get_blocksize(cso->format)) |
 245                         A3XX_TEX_CONST_1_HEIGHT(1);
 246         } else {
 247                 unsigned miplevels;
 248
 249                 lvl = fd_sampler_first_level(cso);
 250                 miplevels = fd_sampler_last_level(cso) - lvl;
 251
 252                 so->texconst0 |= A3XX_TEX_CONST_0_MIPLVLS(miplevels);
 253                 so->texconst1 =
 254                         A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 255                         A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 256                         A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 257         }
 258         /* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
 259         so->texconst2 =
 260                         A3XX_TEX_CONST_2_PITCH(fd3_pipe2nblocksx(cso->format, rsc->slices[lvl].pitch) * rsc->cpp);
 261         switch (prsc->target) {
 262         case PIPE_TEXTURE_1D_ARRAY:
 263         case PIPE_TEXTURE_2D_ARRAY:
 264                 so->texconst3 =
 265                                 A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) |
 266                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0);
 267                 break;
 268         case PIPE_TEXTURE_3D:
 269                 so->texconst3 =
 270                                 A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
 271                                 A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[lvl].size0);
 272                 while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
 273                         sz2 = rsc->slices[++lvl].size0;
 274                 so->texconst3 |= A3XX_TEX_CONST_3_LAYERSZ2(sz2);
 275                 break;
 276         default:
 277                 so->texconst3 = 0x00000000;
 278                 break;
 279         }
 280
 281         return &so->base;
 282 }
 283
 284 void
 285 fd3_texture_init(struct pipe_context *pctx)
 286 {
 287         pctx->create_sampler_state = fd3_sampler_state_create;
 288         pctx->bind_sampler_states = fd3_sampler_states_bind;
 289         pctx->create_sampler_view = fd3_sampler_view_create;
 290         pctx->set_sampler_views = fd_set_sampler_views;
 291 }