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/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 */
50static void
51softpipe_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
89static void
90softpipe_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
98void
99softpipe_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->cache = softpipe->tex_cache[shader][start + i];
131      }
132      else {
133         memset(sp_sviewdst, 0,  sizeof(*sp_sviewsrc));
134      }
135   }
136
137
138   /* find highest non-null sampler_views[] entry */
139   {
140      unsigned j = MAX2(softpipe->num_sampler_views[shader], start + num);
141      while (j > 0 && softpipe->sampler_views[shader][j - 1] == NULL)
142         j--;
143      softpipe->num_sampler_views[shader] = j;
144   }
145
146   if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
147      draw_set_sampler_views(softpipe->draw,
148                             shader,
149                             softpipe->sampler_views[shader],
150                             softpipe->num_sampler_views[shader]);
151   }
152
153   softpipe->dirty |= SP_NEW_TEXTURE;
154}
155
156
157static void
158softpipe_delete_sampler_state(struct pipe_context *pipe,
159                              void *sampler)
160{
161   FREE( sampler );
162}
163
164
165static void
166prepare_shader_sampling(
167   struct softpipe_context *sp,
168   unsigned num,
169   struct pipe_sampler_view **views,
170   unsigned shader_type,
171   struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
172{
173
174   unsigned i;
175   uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
176   uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
177   uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
178   const void *addr;
179
180   assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
181   if (!num)
182      return;
183
184   for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
185      struct pipe_sampler_view *view = i < num ? views[i] : NULL;
186
187      if (view) {
188         struct pipe_resource *tex = view->texture;
189         struct softpipe_resource *sp_tex = softpipe_resource(tex);
190         unsigned width0 = tex->width0;
191         unsigned num_layers = tex->depth0;
192         unsigned first_level = 0;
193         unsigned last_level = 0;
194
195         /* We're referencing the texture's internal data, so save a
196          * reference to it.
197          */
198         pipe_resource_reference(&mapped_tex[i], tex);
199
200         if (!sp_tex->dt) {
201            /* regular texture - setup array of mipmap level offsets */
202            MAYBE_UNUSED struct pipe_resource *res = view->texture;
203            int j;
204
205            if (view->target != PIPE_BUFFER) {
206               first_level = view->u.tex.first_level;
207               last_level = view->u.tex.last_level;
208               assert(first_level <= last_level);
209               assert(last_level <= res->last_level);
210               addr = sp_tex->data;
211
212               for (j = first_level; j <= last_level; j++) {
213                  mip_offsets[j] = sp_tex->level_offset[j];
214                  row_stride[j] = sp_tex->stride[j];
215                  img_stride[j] = sp_tex->img_stride[j];
216               }
217               if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
218                   tex->target == PIPE_TEXTURE_2D_ARRAY ||
219                   tex->target == PIPE_TEXTURE_CUBE ||
220                   tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
221                  num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
222                  for (j = first_level; j <= last_level; j++) {
223                     mip_offsets[j] += view->u.tex.first_layer *
224                                       sp_tex->img_stride[j];
225                  }
226                  if (view->target == PIPE_TEXTURE_CUBE ||
227                      view->target == PIPE_TEXTURE_CUBE_ARRAY) {
228                     assert(num_layers % 6 == 0);
229                  }
230                  assert(view->u.tex.first_layer <= view->u.tex.last_layer);
231                  assert(view->u.tex.last_layer < res->array_size);
232               }
233            }
234            else {
235               unsigned view_blocksize = util_format_get_blocksize(view->format);
236               addr = sp_tex->data;
237               /* probably don't really need to fill that out */
238               mip_offsets[0] = 0;
239               row_stride[0] = 0;
240               img_stride[0] = 0;
241
242               /* everything specified in number of elements here. */
243               width0 = view->u.buf.size / view_blocksize;
244               addr = (uint8_t *)addr + view->u.buf.offset;
245               assert(view->u.buf.offset + view->u.buf.size <= res->width0);
246            }
247         }
248         else {
249            /* display target texture/surface */
250            /*
251             * XXX: Where should this be unmapped?
252             */
253            struct softpipe_screen *screen = softpipe_screen(tex->screen);
254            struct sw_winsys *winsys = screen->winsys;
255            addr = winsys->displaytarget_map(winsys, sp_tex->dt,
256                                             PIPE_TRANSFER_READ);
257            row_stride[0] = sp_tex->stride[0];
258            img_stride[0] = sp_tex->img_stride[0];
259            mip_offsets[0] = 0;
260            assert(addr);
261         }
262         draw_set_mapped_texture(sp->draw,
263                                 shader_type,
264                                 i,
265                                 width0, tex->height0, num_layers,
266                                 first_level, last_level,
267                                 addr,
268                                 row_stride, img_stride, mip_offsets);
269      }
270   }
271}
272
273
274/**
275 * Called during state validation when SP_NEW_TEXTURE is set.
276 */
277void
278softpipe_prepare_vertex_sampling(struct softpipe_context *sp,
279                                 unsigned num,
280                                 struct pipe_sampler_view **views)
281{
282   prepare_shader_sampling(sp, num, views, PIPE_SHADER_VERTEX,
283                           sp->mapped_vs_tex);
284}
285
286void
287softpipe_cleanup_vertex_sampling(struct softpipe_context *ctx)
288{
289   unsigned i;
290   for (i = 0; i < ARRAY_SIZE(ctx->mapped_vs_tex); i++) {
291      pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
292   }
293}
294
295
296/**
297 * Called during state validation when SP_NEW_TEXTURE is set.
298 */
299void
300softpipe_prepare_geometry_sampling(struct softpipe_context *sp,
301                                   unsigned num,
302                                   struct pipe_sampler_view **views)
303{
304   prepare_shader_sampling(sp, num, views, PIPE_SHADER_GEOMETRY,
305                           sp->mapped_gs_tex);
306}
307
308void
309softpipe_cleanup_geometry_sampling(struct softpipe_context *ctx)
310{
311   unsigned i;
312   for (i = 0; i < ARRAY_SIZE(ctx->mapped_gs_tex); i++) {
313      pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
314   }
315}
316
317
318void
319softpipe_init_sampler_funcs(struct pipe_context *pipe)
320{
321   pipe->create_sampler_state = softpipe_create_sampler_state;
322   pipe->bind_sampler_states = softpipe_bind_sampler_states;
323   pipe->delete_sampler_state = softpipe_delete_sampler_state;
324
325   pipe->create_sampler_view = softpipe_create_sampler_view;
326   pipe->set_sampler_views = softpipe_set_sampler_views;
327   pipe->sampler_view_destroy = softpipe_sampler_view_destroy;
328}
329
330