src/gallium/drivers/softpipe/sp_state_sampler.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Authors:
  29  *  Brian Paul
  30  */
  31
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34 #include "util/format/u_format.h"
  35
  36 #include "draw/draw_context.h"
  37
  38 #include "sp_context.h"
  39 #include "sp_state.h"
  40 #include "sp_texture.h"
  41 #include "sp_tex_sample.h"
  42 #include "sp_tex_tile_cache.h"
  43 #include "sp_screen.h"
  44 #include "state_tracker/sw_winsys.h"
  45
  46
  47 /**
  48  * Bind a range [start, start+num-1] of samplers for a shader stage.
  49  */
  50 static void
  51 softpipe_bind_sampler_states(struct pipe_context *pipe,
  52                              enum pipe_shader_type shader,
  53                              unsigned start,
  54                              unsigned num,
  55                              void **samplers)
  56 {
  57    struct softpipe_context *softpipe = softpipe_context(pipe);
  58    unsigned i;
  59
  60    assert(shader < PIPE_SHADER_TYPES);
  61    assert(start + num <= ARRAY_SIZE(softpipe->samplers[shader]));
  62
  63    draw_flush(softpipe->draw);
  64
  65    /* set the new samplers */
  66    for (i = 0; i < num; i++) {
  67       softpipe->samplers[shader][start + i] = samplers[i];
  68    }
  69
  70    /* find highest non-null samplers[] entry */
  71    {
  72       unsigned j = MAX2(softpipe->num_samplers[shader], start + num);
  73       while (j > 0 && softpipe->samplers[shader][j - 1] == NULL)
  74          j--;
  75       softpipe->num_samplers[shader] = j;
  76    }
  77
  78    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
  79       draw_set_samplers(softpipe->draw,
  80                         shader,
  81                         softpipe->samplers[shader],
  82                         softpipe->num_samplers[shader]);
  83    }
  84
  85    softpipe->dirty |= SP_NEW_SAMPLER;
  86 }
  87
  88
  89 static void
  90 softpipe_sampler_view_destroy(struct pipe_context *pipe,
  91                               struct pipe_sampler_view *view)
  92 {
  93    pipe_resource_reference(&view->texture, NULL);
  94    FREE(view);
  95 }
  96
  97
  98 void
  99 softpipe_set_sampler_views(struct pipe_context *pipe,
 100                            enum pipe_shader_type shader,
 101                            unsigned start,
 102                            unsigned num,
 103                            struct pipe_sampler_view **views)
 104 {
 105    struct softpipe_context *softpipe = softpipe_context(pipe);
 106    uint i;
 107
 108    assert(shader < PIPE_SHADER_TYPES);
 109    assert(start + num <= ARRAY_SIZE(softpipe->sampler_views[shader]));
 110
 111    draw_flush(softpipe->draw);
 112
 113    /* set the new sampler views */
 114    for (i = 0; i < num; i++) {
 115       struct sp_sampler_view *sp_sviewsrc;
 116       struct sp_sampler_view *sp_sviewdst =
 117          &softpipe->tgsi.sampler[shader]->sp_sview[start + i];
 118       struct pipe_sampler_view **pview = &softpipe->sampler_views[shader][start + i];
 119       pipe_sampler_view_reference(pview, views[i]);
 120       sp_tex_tile_cache_set_sampler_view(softpipe->tex_cache[shader][start + i],
 121                                          views[i]);
 122       /*
 123        * We don't really have variants, however some bits are different per shader,
 124        * so just copy?
 125        */
 126       sp_sviewsrc = (struct sp_sampler_view *)*pview;
 127       if (sp_sviewsrc) {
 128          memcpy(sp_sviewdst, sp_sviewsrc, sizeof(*sp_sviewsrc));
 129          sp_sviewdst->compute_lambda = softpipe_get_lambda_func(&sp_sviewdst->base, shader);
 130          sp_sviewdst->compute_lambda_from_grad = softpipe_get_lambda_from_grad_func(&sp_sviewdst->base, shader);
 131          sp_sviewdst->cache = softpipe->tex_cache[shader][start + i];
 132       }
 133       else {
 134          memset(sp_sviewdst, 0,  sizeof(*sp_sviewsrc));
 135       }
 136    }
 137
 138
 139    /* find highest non-null sampler_views[] entry */
 140    {
 141       unsigned j = MAX2(softpipe->num_sampler_views[shader], start + num);
 142       while (j > 0 && softpipe->sampler_views[shader][j - 1] == NULL)
 143          j--;
 144       softpipe->num_sampler_views[shader] = j;
 145    }
 146
 147    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
 148       draw_set_sampler_views(softpipe->draw,
 149                              shader,
 150                              softpipe->sampler_views[shader],
 151                              softpipe->num_sampler_views[shader]);
 152    }
 153
 154    softpipe->dirty |= SP_NEW_TEXTURE;
 155 }
 156
 157
 158 static void
 159 softpipe_delete_sampler_state(struct pipe_context *pipe,
 160                               void *sampler)
 161 {
 162    FREE( sampler );
 163 }
 164
 165
 166 static void
 167 prepare_shader_sampling(
 168    struct softpipe_context *sp,
 169    unsigned num,
 170    struct pipe_sampler_view **views,
 171    enum pipe_shader_type shader_type,
 172    struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
 173 {
 174
 175    unsigned i;
 176    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 177    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 178    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 179    const void *addr;
 180
 181    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 182    if (!num)
 183       return;
 184
 185    for (i = 0; i < num; i++) {
 186       struct pipe_sampler_view *view = views[i];
 187
 188       if (view) {
 189          struct pipe_resource *tex = view->texture;
 190          struct softpipe_resource *sp_tex = softpipe_resource(tex);
 191          unsigned width0 = tex->width0;
 192          unsigned num_layers = tex->depth0;
 193          unsigned first_level = 0;
 194          unsigned last_level = 0;
 195
 196          /* We're referencing the texture's internal data, so save a
 197           * reference to it.
 198           */
 199          pipe_resource_reference(&mapped_tex[i], tex);
 200
 201          if (!sp_tex->dt) {
 202             /* regular texture - setup array of mipmap level offsets */
 203             ASSERTED struct pipe_resource *res = view->texture;
 204             int j;
 205
 206             if (view->target != PIPE_BUFFER) {
 207                first_level = view->u.tex.first_level;
 208                last_level = view->u.tex.last_level;
 209                assert(first_level <= last_level);
 210                assert(last_level <= res->last_level);
 211                addr = sp_tex->data;
 212
 213                for (j = first_level; j <= last_level; j++) {
 214                   mip_offsets[j] = sp_tex->level_offset[j];
 215                   row_stride[j] = sp_tex->stride[j];
 216                   img_stride[j] = sp_tex->img_stride[j];
 217                }
 218                if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
 219                    tex->target == PIPE_TEXTURE_2D_ARRAY ||
 220                    tex->target == PIPE_TEXTURE_CUBE ||
 221                    tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
 222                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 223                   for (j = first_level; j <= last_level; j++) {
 224                      mip_offsets[j] += view->u.tex.first_layer *
 225                                        sp_tex->img_stride[j];
 226                   }
 227                   if (view->target == PIPE_TEXTURE_CUBE ||
 228                       view->target == PIPE_TEXTURE_CUBE_ARRAY) {
 229                      assert(num_layers % 6 == 0);
 230                   }
 231                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 232                   assert(view->u.tex.last_layer < res->array_size);
 233                }
 234             }
 235             else {
 236                unsigned view_blocksize = util_format_get_blocksize(view->format);
 237                addr = sp_tex->data;
 238                /* probably don't really need to fill that out */
 239                mip_offsets[0] = 0;
 240                row_stride[0] = 0;
 241                img_stride[0] = 0;
 242
 243                /* everything specified in number of elements here. */
 244                width0 = view->u.buf.size / view_blocksize;
 245                addr = (uint8_t *)addr + view->u.buf.offset;
 246                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 247             }
 248          }
 249          else {
 250             /* display target texture/surface */
 251             /*
 252              * XXX: Where should this be unmapped?
 253              */
 254             struct softpipe_screen *screen = softpipe_screen(tex->screen);
 255             struct sw_winsys *winsys = screen->winsys;
 256             addr = winsys->displaytarget_map(winsys, sp_tex->dt,
 257                                              PIPE_TRANSFER_READ);
 258             row_stride[0] = sp_tex->stride[0];
 259             img_stride[0] = sp_tex->img_stride[0];
 260             mip_offsets[0] = 0;
 261             assert(addr);
 262          }
 263          draw_set_mapped_texture(sp->draw,
 264                                  shader_type,
 265                                  i,
 266                                  width0, tex->height0, num_layers,
 267                                  first_level, last_level,
 268                                  addr,
 269                                  row_stride, img_stride, mip_offsets);
 270       }
 271    }
 272 }
 273
 274
 275 /**
 276  * Called during state validation when SP_NEW_TEXTURE is set.
 277  */
 278 void
 279 softpipe_prepare_vertex_sampling(struct softpipe_context *sp,
 280                                  unsigned num,
 281                                  struct pipe_sampler_view **views)
 282 {
 283    prepare_shader_sampling(sp, num, views, PIPE_SHADER_VERTEX,
 284                            sp->mapped_vs_tex);
 285 }
 286
 287 void
 288 softpipe_cleanup_vertex_sampling(struct softpipe_context *ctx)
 289 {
 290    unsigned i;
 291    for (i = 0; i < ARRAY_SIZE(ctx->mapped_vs_tex); i++) {
 292       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 293    }
 294 }
 295
 296
 297 /**
 298  * Called during state validation when SP_NEW_TEXTURE is set.
 299  */
 300 void
 301 softpipe_prepare_geometry_sampling(struct softpipe_context *sp,
 302                                    unsigned num,
 303                                    struct pipe_sampler_view **views)
 304 {
 305    prepare_shader_sampling(sp, num, views, PIPE_SHADER_GEOMETRY,
 306                            sp->mapped_gs_tex);
 307 }
 308
 309 void
 310 softpipe_cleanup_geometry_sampling(struct softpipe_context *ctx)
 311 {
 312    unsigned i;
 313    for (i = 0; i < ARRAY_SIZE(ctx->mapped_gs_tex); i++) {
 314       pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
 315    }
 316 }
 317
 318
 319 void
 320 softpipe_init_sampler_funcs(struct pipe_context *pipe)
 321 {
 322    pipe->create_sampler_state = softpipe_create_sampler_state;
 323    pipe->bind_sampler_states = softpipe_bind_sampler_states;
 324    pipe->delete_sampler_state = softpipe_delete_sampler_state;
 325
 326    pipe->create_sampler_view = softpipe_create_sampler_view;
 327    pipe->set_sampler_views = softpipe_set_sampler_views;
 328    pipe->sampler_view_destroy = softpipe_sampler_view_destroy;
 329 }
 330