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  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 OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20.  * OTHER DEALINGS IN THE 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. }
  307.