src/gallium/drivers/nv30/nv30_texture.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  *
  24  */
  25
  26 #include "util/u_inlines.h"
  27 #include "util/u_format.h"
  28
  29 #include "nouveau/nv_object.xml.h"
  30 #include "nv30-40_3d.xml.h"
  31 #include "nv30_context.h"
  32 #include "nv30_format.h"
  33
  34 #define NV30_3D_TEX_WRAP_S_MIRROR_REPEAT NV30_3D_TEX_WRAP_S_MIRRORED_REPEAT
  35 #define NV30_WRAP(n) \
  36    case PIPE_TEX_WRAP_##n: ret = NV30_3D_TEX_WRAP_S_##n; break
  37 #define NV40_WRAP(n) \
  38    case PIPE_TEX_WRAP_##n: ret = NV40_3D_TEX_WRAP_S_##n; break
  39
  40 static INLINE unsigned
  41 wrap_mode(unsigned pipe)
  42 {
  43    unsigned ret = NV30_3D_TEX_WRAP_S_REPEAT;
  44
  45    switch (pipe) {
  46    NV30_WRAP(REPEAT);
  47    NV30_WRAP(MIRROR_REPEAT);
  48    NV30_WRAP(CLAMP_TO_EDGE);
  49    NV30_WRAP(CLAMP_TO_BORDER);
  50    NV30_WRAP(CLAMP);
  51    NV40_WRAP(MIRROR_CLAMP_TO_EDGE);
  52    NV40_WRAP(MIRROR_CLAMP_TO_BORDER);
  53    NV40_WRAP(MIRROR_CLAMP);
  54    default:
  55       break;
  56    }
  57
  58    return ret >> NV30_3D_TEX_WRAP_S__SHIFT;
  59 }
  60
  61 static INLINE unsigned
  62 filter_mode(const struct pipe_sampler_state *cso)
  63 {
  64    unsigned filter;
  65
  66    switch (cso->mag_img_filter) {
  67    case PIPE_TEX_FILTER_LINEAR:
  68       filter = NV30_3D_TEX_FILTER_MAG_LINEAR;
  69       break;
  70    default:
  71       filter = NV30_3D_TEX_FILTER_MAG_NEAREST;
  72       break;
  73    }
  74
  75    switch (cso->min_img_filter) {
  76    case PIPE_TEX_FILTER_LINEAR:
  77       switch (cso->min_mip_filter) {
  78       case PIPE_TEX_MIPFILTER_NEAREST:
  79          filter |= NV30_3D_TEX_FILTER_MIN_LINEAR_MIPMAP_NEAREST;
  80          break;
  81       case PIPE_TEX_MIPFILTER_LINEAR:
  82          filter |= NV30_3D_TEX_FILTER_MIN_LINEAR_MIPMAP_LINEAR;
  83          break;
  84       default:
  85          filter |= NV30_3D_TEX_FILTER_MIN_LINEAR;
  86          break;
  87       }
  88       break;
  89    default:
  90       switch (cso->min_mip_filter) {
  91       case PIPE_TEX_MIPFILTER_NEAREST:
  92          filter |= NV30_3D_TEX_FILTER_MIN_NEAREST_MIPMAP_NEAREST;
  93          break;
  94       case PIPE_TEX_MIPFILTER_LINEAR:
  95          filter |= NV30_3D_TEX_FILTER_MIN_NEAREST_MIPMAP_LINEAR;
  96          break;
  97       default:
  98          filter |= NV30_3D_TEX_FILTER_MIN_NEAREST;
  99          break;
 100       }
 101       break;
 102    }
 103
 104    return filter;
 105 }
 106
 107 static INLINE unsigned
 108 compare_mode(const struct pipe_sampler_state *cso)
 109 {
 110    if (cso->compare_mode != PIPE_TEX_COMPARE_R_TO_TEXTURE)
 111       return 0;
 112
 113    switch (cso->compare_func) {
 114    case PIPE_FUNC_NEVER   : return NV30_3D_TEX_WRAP_RCOMP_NEVER;
 115    case PIPE_FUNC_GREATER : return NV30_3D_TEX_WRAP_RCOMP_GREATER;
 116    case PIPE_FUNC_EQUAL   : return NV30_3D_TEX_WRAP_RCOMP_EQUAL;
 117    case PIPE_FUNC_GEQUAL  : return NV30_3D_TEX_WRAP_RCOMP_GEQUAL;
 118    case PIPE_FUNC_LESS    : return NV30_3D_TEX_WRAP_RCOMP_LESS;
 119    case PIPE_FUNC_NOTEQUAL: return NV30_3D_TEX_WRAP_RCOMP_NOTEQUAL;
 120    case PIPE_FUNC_LEQUAL  : return NV30_3D_TEX_WRAP_RCOMP_LEQUAL;
 121    case PIPE_FUNC_ALWAYS  : return NV30_3D_TEX_WRAP_RCOMP_ALWAYS;
 122    default:
 123       return 0;
 124    }
 125 }
 126
 127 static void *
 128 nv30_sampler_state_create(struct pipe_context *pipe,
 129                           const struct pipe_sampler_state *cso)
 130 {
 131    struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;
 132    struct nv30_sampler_state *so;
 133    const float max_lod = 15.0 + (255.0 / 256.0);
 134
 135    so = MALLOC_STRUCT(nv30_sampler_state);
 136    if (!so)
 137       return NULL;
 138
 139    so->pipe  = *cso;
 140    so->fmt   = 0;
 141    so->wrap  = (wrap_mode(cso->wrap_s) << NV30_3D_TEX_WRAP_S__SHIFT) |
 142                (wrap_mode(cso->wrap_t) << NV30_3D_TEX_WRAP_T__SHIFT) |
 143                (wrap_mode(cso->wrap_r) << NV30_3D_TEX_WRAP_R__SHIFT);
 144    so->en    = 0;
 145    so->wrap |= compare_mode(cso);
 146    so->filt  = filter_mode(cso) | 0x00002000;
 147    so->bcol  = (float_to_ubyte(cso->border_color.f[3]) << 24) |
 148                (float_to_ubyte(cso->border_color.f[0]) << 16) |
 149                (float_to_ubyte(cso->border_color.f[1]) <<  8) |
 150                (float_to_ubyte(cso->border_color.f[2]) <<  0);
 151
 152    if (eng3d->oclass >= NV40_3D_CLASS) {
 153       unsigned aniso = cso->max_anisotropy;
 154
 155       if (!cso->normalized_coords)
 156          so->fmt |= NV40_3D_TEX_FORMAT_RECT;
 157
 158       if (aniso > 1) {
 159          if      (aniso >= 16) so->en |= NV40_3D_TEX_ENABLE_ANISO_16X;
 160          else if (aniso >= 12) so->en |= NV40_3D_TEX_ENABLE_ANISO_12X;
 161          else if (aniso >= 10) so->en |= NV40_3D_TEX_ENABLE_ANISO_10X;
 162          else if (aniso >=  8) so->en |= NV40_3D_TEX_ENABLE_ANISO_8X;
 163          else if (aniso >=  6) so->en |= NV40_3D_TEX_ENABLE_ANISO_6X;
 164          else if (aniso >=  4) so->en |= NV40_3D_TEX_ENABLE_ANISO_4X;
 165          else                  so->en |= NV40_3D_TEX_ENABLE_ANISO_2X;
 166
 167          so->wrap |= nv30_context(pipe)->config.aniso;
 168       }
 169    } else {
 170       so->en |= NV30_3D_TEX_ENABLE_ENABLE;
 171
 172       if      (cso->max_anisotropy >= 8) so->en |= NV30_3D_TEX_ENABLE_ANISO_8X;
 173       else if (cso->max_anisotropy >= 4) so->en |= NV30_3D_TEX_ENABLE_ANISO_4X;
 174       else if (cso->max_anisotropy >= 2) so->en |= NV30_3D_TEX_ENABLE_ANISO_2X;
 175    }
 176
 177    so->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
 178    so->max_lod = (int)(CLAMP(cso->max_lod, 0.0, max_lod) * 256.0);
 179    so->min_lod = (int)(CLAMP(cso->min_lod, 0.0, max_lod) * 256.0);
 180    return so;
 181 }
 182
 183 static void
 184 nv30_sampler_state_delete(struct pipe_context *pipe, void *hwcso)
 185 {
 186    FREE(hwcso);
 187 }
 188
 189 static INLINE uint32_t
 190 swizzle(const struct nv30_texfmt *fmt, unsigned cmp, unsigned swz)
 191 {
 192    uint32_t data = fmt->swz[swz].src << 8;
 193    if (swz <= PIPE_SWIZZLE_ALPHA)
 194       data |= fmt->swz[swz].cmp;
 195    else
 196       data |= fmt->swz[cmp].cmp;
 197    return data;
 198 }
 199
 200 static struct pipe_sampler_view *
 201 nv30_sampler_view_create(struct pipe_context *pipe, struct pipe_resource *pt,
 202                          const struct pipe_sampler_view *tmpl)
 203 {
 204    const struct nv30_texfmt *fmt = nv30_texfmt(pipe->screen, tmpl->format);
 205    struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;
 206    struct nv30_miptree *mt = nv30_miptree(pt);
 207    struct nv30_sampler_view *so;
 208
 209    so = MALLOC_STRUCT(nv30_sampler_view);
 210    if (!so)
 211       return NULL;
 212    so->pipe = *tmpl;
 213    so->pipe.reference.count = 1;
 214    so->pipe.texture = NULL;
 215    so->pipe.context = pipe;
 216    pipe_resource_reference(&so->pipe.texture, pt);
 217
 218    so->fmt = NV30_3D_TEX_FORMAT_NO_BORDER;
 219    switch (pt->target) {
 220    case PIPE_TEXTURE_1D:
 221       so->fmt |= NV30_3D_TEX_FORMAT_DIMS_1D;
 222       break;
 223    case PIPE_TEXTURE_CUBE:
 224       so->fmt |= NV30_3D_TEX_FORMAT_CUBIC;
 225    case PIPE_TEXTURE_2D:
 226    case PIPE_TEXTURE_RECT:
 227       so->fmt |= NV30_3D_TEX_FORMAT_DIMS_2D;
 228       break;
 229    case PIPE_TEXTURE_3D:
 230       so->fmt |= NV30_3D_TEX_FORMAT_DIMS_3D;
 231       break;
 232    default:
 233       assert(0);
 234       so->fmt |= NV30_3D_TEX_FORMAT_DIMS_1D;
 235       break;
 236    }
 237
 238    so->filt = fmt->filter;
 239    so->wrap = fmt->wrap;
 240    so->swz  = fmt->swizzle;
 241    so->swz |= swizzle(fmt, 3, tmpl->swizzle_a);
 242    so->swz |= swizzle(fmt, 0, tmpl->swizzle_r) << 2;
 243    so->swz |= swizzle(fmt, 1, tmpl->swizzle_g) << 4;
 244    so->swz |= swizzle(fmt, 2, tmpl->swizzle_b) << 6;
 245
 246    /* apparently, we need to ignore the t coordinate for 1D textures to
 247     * fix piglit tex1d-2dborder
 248     */
 249    so->wrap_mask = ~0;
 250    if (pt->target == PIPE_TEXTURE_1D) {
 251       so->wrap_mask &= ~NV30_3D_TEX_WRAP_T__MASK;
 252       so->wrap      |=  NV30_3D_TEX_WRAP_T_REPEAT;
 253    }
 254
 255    /* yet more hardware suckage, can't filter 32-bit float formats */
 256    switch (tmpl->format) {
 257    case PIPE_FORMAT_R32_FLOAT:
 258    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 259       so->filt_mask = ~(NV30_3D_TEX_FILTER_MIN__MASK |
 260                         NV30_3D_TEX_FILTER_MAG__MASK);
 261       so->filt     |= NV30_3D_TEX_FILTER_MIN_NEAREST |
 262                       NV30_3D_TEX_FILTER_MAG_NEAREST;
 263       break;
 264    default:
 265       so->filt_mask = ~0;
 266       break;
 267    }
 268
 269    so->npot_size0 = (pt->width0 << 16) | pt->height0;
 270    if (eng3d->oclass >= NV40_3D_CLASS) {
 271       so->npot_size1 = (pt->depth0 << 20) | mt->uniform_pitch;
 272       if (!mt->swizzled)
 273          so->fmt |= NV40_3D_TEX_FORMAT_LINEAR;
 274       so->fmt |= 0x00008000;
 275       so->fmt |= (pt->last_level + 1) << NV40_3D_TEX_FORMAT_MIPMAP_COUNT__SHIFT;
 276    } else {
 277       so->swz |= mt->uniform_pitch << NV30_3D_TEX_SWIZZLE_RECT_PITCH__SHIFT;
 278       if (pt->last_level)
 279          so->fmt |= NV30_3D_TEX_FORMAT_MIPMAP;
 280       so->fmt |= util_logbase2(pt->width0)  << 20;
 281       so->fmt |= util_logbase2(pt->height0) << 24;
 282       so->fmt |= util_logbase2(pt->depth0)  << 28;
 283       so->fmt |= 0x00010000;
 284    }
 285
 286    so->base_lod = so->pipe.u.tex.first_level << 8;
 287    so->high_lod = MIN2(pt->last_level, so->pipe.u.tex.last_level) << 8;
 288    return &so->pipe;
 289 }
 290
 291 static void
 292 nv30_sampler_view_destroy(struct pipe_context *pipe,
 293                           struct pipe_sampler_view *view)
 294 {
 295    pipe_resource_reference(&view->texture, NULL);
 296    FREE(view);
 297 }
 298
 299 void
 300 nv30_texture_init(struct pipe_context *pipe)
 301 {
 302    pipe->create_sampler_state = nv30_sampler_state_create;
 303    pipe->delete_sampler_state = nv30_sampler_state_delete;
 304    pipe->create_sampler_view = nv30_sampler_view_create;
 305    pipe->sampler_view_destroy = nv30_sampler_view_destroy;
 306 }