src/gallium/drivers/svga/svga_pipe_sampler.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "util/u_inlines.h"
  27 #include "pipe/p_defines.h"
  28 #include "util/u_format.h"
  29 #include "util/u_math.h"
  30 #include "util/u_memory.h"
  31 #include "tgsi/tgsi_parse.h"
  32
  33 #include "svga_context.h"
  34 #include "svga_resource_texture.h"
  35
  36 #include "svga_debug.h"
  37
  38 static INLINE unsigned
  39 translate_wrap_mode(unsigned wrap)
  40 {
  41    switch (wrap) {
  42    case PIPE_TEX_WRAP_REPEAT:
  43       return SVGA3D_TEX_ADDRESS_WRAP;
  44
  45    case PIPE_TEX_WRAP_CLAMP:
  46       return SVGA3D_TEX_ADDRESS_CLAMP;
  47
  48    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  49       /* Unfortunately SVGA3D_TEX_ADDRESS_EDGE not respected by
  50        * hardware.
  51        */
  52       return SVGA3D_TEX_ADDRESS_CLAMP;
  53
  54    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  55       return SVGA3D_TEX_ADDRESS_BORDER;
  56
  57    case PIPE_TEX_WRAP_MIRROR_REPEAT:
  58       return SVGA3D_TEX_ADDRESS_MIRROR;
  59
  60    case PIPE_TEX_WRAP_MIRROR_CLAMP:
  61    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  62    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  63       return SVGA3D_TEX_ADDRESS_MIRRORONCE;
  64
  65    default:
  66       assert(0);
  67       return SVGA3D_TEX_ADDRESS_WRAP;
  68    }
  69 }
  70
  71 static INLINE unsigned translate_img_filter( unsigned filter )
  72 {
  73    switch (filter) {
  74    case PIPE_TEX_FILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
  75    case PIPE_TEX_FILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
  76    default:
  77       assert(0);
  78       return SVGA3D_TEX_FILTER_NEAREST;
  79    }
  80 }
  81
  82 static INLINE unsigned translate_mip_filter( unsigned filter )
  83 {
  84    switch (filter) {
  85    case PIPE_TEX_MIPFILTER_NONE:    return SVGA3D_TEX_FILTER_NONE;
  86    case PIPE_TEX_MIPFILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
  87    case PIPE_TEX_MIPFILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
  88    default:
  89       assert(0);
  90       return SVGA3D_TEX_FILTER_NONE;
  91    }
  92 }
  93
  94 static void *
  95 svga_create_sampler_state(struct pipe_context *pipe,
  96                           const struct pipe_sampler_state *sampler)
  97 {
  98    struct svga_context *svga = svga_context(pipe);
  99    struct svga_sampler_state *cso = CALLOC_STRUCT( svga_sampler_state );
 100
 101    cso->mipfilter = translate_mip_filter(sampler->min_mip_filter);
 102    cso->magfilter = translate_img_filter( sampler->mag_img_filter );
 103    cso->minfilter = translate_img_filter( sampler->min_img_filter );
 104    cso->aniso_level = MAX2( sampler->max_anisotropy, 1 );
 105    if(sampler->max_anisotropy)
 106       cso->magfilter = cso->minfilter = SVGA3D_TEX_FILTER_ANISOTROPIC;
 107    cso->lod_bias = sampler->lod_bias;
 108    cso->addressu = translate_wrap_mode(sampler->wrap_s);
 109    cso->addressv = translate_wrap_mode(sampler->wrap_t);
 110    cso->addressw = translate_wrap_mode(sampler->wrap_r);
 111    cso->normalized_coords = sampler->normalized_coords;
 112    cso->compare_mode = sampler->compare_mode;
 113    cso->compare_func = sampler->compare_func;
 114
 115    {
 116       uint32 r = float_to_ubyte(sampler->border_color.f[0]);
 117       uint32 g = float_to_ubyte(sampler->border_color.f[1]);
 118       uint32 b = float_to_ubyte(sampler->border_color.f[2]);
 119       uint32 a = float_to_ubyte(sampler->border_color.f[3]);
 120
 121       cso->bordercolor = (a << 24) | (r << 16) | (g << 8) | b;
 122    }
 123
 124    /* No SVGA3D support for:
 125     *    - min/max LOD clamping
 126     */
 127    cso->min_lod = 0;
 128    cso->view_min_lod = MAX2((int) (sampler->min_lod + 0.5), 0);
 129    cso->view_max_lod = MAX2((int) (sampler->max_lod + 0.5), 0);
 130
 131    /* Use min_mipmap */
 132    if (svga->debug.use_min_mipmap) {
 133       if (cso->view_min_lod == cso->view_max_lod) {
 134          cso->min_lod = cso->view_min_lod;
 135          cso->view_min_lod = 0;
 136          cso->view_max_lod = 1000; /* Just a high number */
 137          cso->mipfilter = SVGA3D_TEX_FILTER_NONE;
 138       }
 139    }
 140
 141    SVGA_DBG(DEBUG_VIEWS, "min %u, view(min %u, max %u) lod, mipfilter %s\n",
 142             cso->min_lod, cso->view_min_lod, cso->view_max_lod,
 143             cso->mipfilter == SVGA3D_TEX_FILTER_NONE ? "SVGA3D_TEX_FILTER_NONE" : "SOMETHING");
 144
 145    return cso;
 146 }
 147
 148 static void
 149 svga_bind_fragment_sampler_states(struct pipe_context *pipe,
 150                                   unsigned num, void **sampler)
 151 {
 152    struct svga_context *svga = svga_context(pipe);
 153    unsigned i;
 154
 155    assert(num <= PIPE_MAX_SAMPLERS);
 156
 157    /* Check for no-op */
 158    if (num == svga->curr.num_samplers &&
 159        !memcmp(svga->curr.sampler, sampler, num * sizeof(void *))) {
 160       if (0) debug_printf("sampler noop\n");
 161       return;
 162    }
 163
 164    for (i = 0; i < num; i++)
 165       svga->curr.sampler[i] = sampler[i];
 166
 167    for (i = num; i < svga->curr.num_samplers; i++)
 168       svga->curr.sampler[i] = NULL;
 169
 170    svga->curr.num_samplers = num;
 171    svga->dirty |= SVGA_NEW_SAMPLER;
 172 }
 173
 174 static void svga_delete_sampler_state(struct pipe_context *pipe,
 175                                       void *sampler)
 176 {
 177    FREE(sampler);
 178 }
 179
 180
 181 static struct pipe_sampler_view *
 182 svga_create_sampler_view(struct pipe_context *pipe,
 183                          struct pipe_resource *texture,
 184                          const struct pipe_sampler_view *templ)
 185 {
 186    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 187
 188    if (view) {
 189       *view = *templ;
 190       view->reference.count = 1;
 191       view->texture = NULL;
 192       pipe_resource_reference(&view->texture, texture);
 193       view->context = pipe;
 194    }
 195
 196    return view;
 197 }
 198
 199
 200 static void
 201 svga_sampler_view_destroy(struct pipe_context *pipe,
 202                           struct pipe_sampler_view *view)
 203 {
 204    pipe_resource_reference(&view->texture, NULL);
 205    FREE(view);
 206 }
 207
 208 static void
 209 svga_set_fragment_sampler_views(struct pipe_context *pipe,
 210                                 unsigned num,
 211                                 struct pipe_sampler_view **views)
 212 {
 213    struct svga_context *svga = svga_context(pipe);
 214    unsigned flag_1d = 0;
 215    unsigned flag_srgb = 0;
 216    uint i;
 217
 218    assert(num <= PIPE_MAX_SAMPLERS);
 219
 220    /* Check for no-op */
 221    if (num == svga->curr.num_sampler_views &&
 222        !memcmp(svga->curr.sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 223       if (0) debug_printf("texture noop\n");
 224       return;
 225    }
 226
 227    for (i = 0; i < num; i++) {
 228       pipe_sampler_view_reference(&svga->curr.sampler_views[i],
 229                                   views[i]);
 230
 231       if (!views[i])
 232          continue;
 233
 234       if (util_format_is_srgb(views[i]->format))
 235          flag_srgb |= 1 << i;
 236
 237       if (views[i]->texture->target == PIPE_TEXTURE_1D)
 238          flag_1d |= 1 << i;
 239    }
 240
 241    for (i = num; i < svga->curr.num_sampler_views; i++)
 242       pipe_sampler_view_reference(&svga->curr.sampler_views[i],
 243                                   NULL);
 244
 245    svga->curr.num_sampler_views = num;
 246    svga->dirty |= SVGA_NEW_TEXTURE_BINDING;
 247
 248    if (flag_srgb != svga->curr.tex_flags.flag_srgb ||
 249        flag_1d != svga->curr.tex_flags.flag_1d)
 250    {
 251       svga->dirty |= SVGA_NEW_TEXTURE_FLAGS;
 252       svga->curr.tex_flags.flag_1d = flag_1d;
 253       svga->curr.tex_flags.flag_srgb = flag_srgb;
 254    }
 255 }
 256
 257
 258
 259 void svga_init_sampler_functions( struct svga_context *svga )
 260 {
 261    svga->pipe.create_sampler_state = svga_create_sampler_state;
 262    svga->pipe.bind_fragment_sampler_states = svga_bind_fragment_sampler_states;
 263    svga->pipe.delete_sampler_state = svga_delete_sampler_state;
 264    svga->pipe.set_fragment_sampler_views = svga_set_fragment_sampler_views;
 265    svga->pipe.create_sampler_view = svga_create_sampler_view;
 266    svga->pipe.sampler_view_destroy = svga_sampler_view_destroy;
 267 }
 268
 269
 270