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_math.h"
  29 #include "util/u_memory.h"
  30 #include "tgsi/tgsi_parse.h"
  31
  32 #include "svga_context.h"
  33 #include "svga_resource_texture.h"
  34
  35 #include "svga_debug.h"
  36
  37 static INLINE unsigned
  38 translate_wrap_mode(unsigned wrap)
  39 {
  40    switch (wrap) {
  41    case PIPE_TEX_WRAP_REPEAT:
  42       return SVGA3D_TEX_ADDRESS_WRAP;
  43
  44    case PIPE_TEX_WRAP_CLAMP:
  45       return SVGA3D_TEX_ADDRESS_CLAMP;
  46
  47    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  48       /* Unfortunately SVGA3D_TEX_ADDRESS_EDGE not respected by
  49        * hardware.
  50        */
  51       return SVGA3D_TEX_ADDRESS_CLAMP;
  52
  53    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  54       return SVGA3D_TEX_ADDRESS_BORDER;
  55
  56    case PIPE_TEX_WRAP_MIRROR_REPEAT:
  57       return SVGA3D_TEX_ADDRESS_MIRROR;
  58
  59    case PIPE_TEX_WRAP_MIRROR_CLAMP:
  60    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  61    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  62       return SVGA3D_TEX_ADDRESS_MIRRORONCE;
  63
  64    default:
  65       assert(0);
  66       return SVGA3D_TEX_ADDRESS_WRAP;
  67    }
  68 }
  69
  70 static INLINE unsigned translate_img_filter( unsigned filter )
  71 {
  72    switch (filter) {
  73    case PIPE_TEX_FILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
  74    case PIPE_TEX_FILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
  75    default:
  76       assert(0);
  77       return SVGA3D_TEX_FILTER_NEAREST;
  78    }
  79 }
  80
  81 static INLINE unsigned translate_mip_filter( unsigned filter )
  82 {
  83    switch (filter) {
  84    case PIPE_TEX_MIPFILTER_NONE:    return SVGA3D_TEX_FILTER_NONE;
  85    case PIPE_TEX_MIPFILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
  86    case PIPE_TEX_MIPFILTER_LINEAR:  return SVGA3D_TEX_FILTER_LINEAR;
  87    default:
  88       assert(0);
  89       return SVGA3D_TEX_FILTER_NONE;
  90    }
  91 }
  92
  93 static void *
  94 svga_create_sampler_state(struct pipe_context *pipe,
  95                           const struct pipe_sampler_state *sampler)
  96 {
  97    struct svga_context *svga = svga_context(pipe);
  98    struct svga_sampler_state *cso = CALLOC_STRUCT( svga_sampler_state );
  99
 100    cso->mipfilter = translate_mip_filter(sampler->min_mip_filter);
 101    cso->magfilter = translate_img_filter( sampler->mag_img_filter );
 102    cso->minfilter = translate_img_filter( sampler->min_img_filter );
 103    cso->aniso_level = MAX2( sampler->max_anisotropy, 1 );
 104    if(sampler->max_anisotropy)
 105       cso->magfilter = cso->minfilter = SVGA3D_TEX_FILTER_ANISOTROPIC;
 106    cso->lod_bias = sampler->lod_bias;
 107    cso->addressu = translate_wrap_mode(sampler->wrap_s);
 108    cso->addressv = translate_wrap_mode(sampler->wrap_t);
 109    cso->addressw = translate_wrap_mode(sampler->wrap_r);
 110    cso->normalized_coords = sampler->normalized_coords;
 111    cso->compare_mode = sampler->compare_mode;
 112    cso->compare_func = sampler->compare_func;
 113
 114    {
 115       uint32 r = float_to_ubyte(sampler->border_color[0]);
 116       uint32 g = float_to_ubyte(sampler->border_color[1]);
 117       uint32 b = float_to_ubyte(sampler->border_color[2]);
 118       uint32 a = float_to_ubyte(sampler->border_color[3]);
 119
 120       cso->bordercolor = (a << 24) | (r << 16) | (g << 8) | b;
 121    }
 122
 123    /* No SVGA3D support for:
 124     *    - min/max LOD clamping
 125     */
 126    cso->min_lod = 0;
 127    cso->view_min_lod = MAX2(sampler->min_lod, 0);
 128    cso->view_max_lod = MAX2(sampler->max_lod, 0);
 129
 130    /* Use min_mipmap */
 131    if (svga->debug.use_min_mipmap) {
 132       if (cso->view_min_lod == cso->view_max_lod) {
 133          cso->min_lod = cso->view_min_lod;
 134          cso->view_min_lod = 0;
 135          cso->view_max_lod = 1000; /* Just a high number */
 136          cso->mipfilter = SVGA3D_TEX_FILTER_NONE;
 137       }
 138    }
 139
 140    SVGA_DBG(DEBUG_VIEWS, "min %u, view(min %u, max %u) lod, mipfilter %s\n",
 141             cso->min_lod, cso->view_min_lod, cso->view_max_lod,
 142             cso->mipfilter == SVGA3D_TEX_FILTER_NONE ? "SVGA3D_TEX_FILTER_NONE" : "SOMETHING");
 143
 144    return cso;
 145 }
 146
 147 static void svga_bind_sampler_states(struct pipe_context *pipe,
 148                                      unsigned num, void **sampler)
 149 {
 150    struct svga_context *svga = svga_context(pipe);
 151    unsigned i;
 152
 153    assert(num <= PIPE_MAX_SAMPLERS);
 154
 155    /* Check for no-op */
 156    if (num == svga->curr.num_samplers &&
 157        !memcmp(svga->curr.sampler, sampler, num * sizeof(void *))) {
 158       if (0) debug_printf("sampler noop\n");
 159       return;
 160    }
 161
 162    for (i = 0; i < num; i++)
 163       svga->curr.sampler[i] = sampler[i];
 164
 165    for (i = num; i < svga->curr.num_samplers; i++)
 166       svga->curr.sampler[i] = NULL;
 167
 168    svga->curr.num_samplers = num;
 169    svga->dirty |= SVGA_NEW_SAMPLER;
 170 }
 171
 172 static void svga_delete_sampler_state(struct pipe_context *pipe,
 173                                       void *sampler)
 174 {
 175    FREE(sampler);
 176 }
 177
 178
 179 static struct pipe_sampler_view *
 180 svga_create_sampler_view(struct pipe_context *pipe,
 181                          struct pipe_resource *texture,
 182                          const struct pipe_sampler_view *templ)
 183 {
 184    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 185
 186    if (view) {
 187       *view = *templ;
 188       view->reference.count = 1;
 189       view->texture = NULL;
 190       pipe_resource_reference(&view->texture, texture);
 191       view->context = pipe;
 192    }
 193
 194    return view;
 195 }
 196
 197
 198 static void
 199 svga_sampler_view_destroy(struct pipe_context *pipe,
 200                           struct pipe_sampler_view *view)
 201 {
 202    pipe_resource_reference(&view->texture, NULL);
 203    FREE(view);
 204 }
 205
 206 static void svga_set_sampler_views(struct pipe_context *pipe,
 207                                    unsigned num,
 208                                    struct pipe_sampler_view **views)
 209 {
 210    struct svga_context *svga = svga_context(pipe);
 211    unsigned flag_1d = 0;
 212    unsigned flag_srgb = 0;
 213    uint i;
 214
 215    assert(num <= PIPE_MAX_SAMPLERS);
 216
 217    /* Check for no-op */
 218    if (num == svga->curr.num_sampler_views &&
 219        !memcmp(svga->curr.sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 220       if (0) debug_printf("texture noop\n");
 221       return;
 222    }
 223
 224    for (i = 0; i < num; i++) {
 225       pipe_sampler_view_reference(&svga->curr.sampler_views[i],
 226                                   views[i]);
 227
 228       if (!views[i])
 229          continue;
 230
 231       if (views[i]->texture->format == PIPE_FORMAT_B8G8R8A8_SRGB)
 232          flag_srgb |= 1 << i;
 233
 234       if (views[i]->texture->target == PIPE_TEXTURE_1D)
 235          flag_1d |= 1 << i;
 236    }
 237
 238    for (i = num; i < svga->curr.num_sampler_views; i++)
 239       pipe_sampler_view_reference(&svga->curr.sampler_views[i],
 240                                   NULL);
 241
 242    svga->curr.num_sampler_views = num;
 243    svga->dirty |= SVGA_NEW_TEXTURE_BINDING;
 244
 245    if (flag_srgb != svga->curr.tex_flags.flag_srgb ||
 246        flag_1d != svga->curr.tex_flags.flag_1d)
 247    {
 248       svga->dirty |= SVGA_NEW_TEXTURE_FLAGS;
 249       svga->curr.tex_flags.flag_1d = flag_1d;
 250       svga->curr.tex_flags.flag_srgb = flag_srgb;
 251    }
 252 }
 253
 254
 255
 256 void svga_init_sampler_functions( struct svga_context *svga )
 257 {
 258    svga->pipe.create_sampler_state = svga_create_sampler_state;
 259    svga->pipe.bind_fragment_sampler_states = svga_bind_sampler_states;
 260    svga->pipe.delete_sampler_state = svga_delete_sampler_state;
 261    svga->pipe.set_fragment_sampler_views = svga_set_sampler_views;
 262    svga->pipe.create_sampler_view = svga_create_sampler_view;
 263    svga->pipe.sampler_view_destroy = svga_sampler_view_destroy;
 264 }
 265
 266
 267