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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  */
50 static void
softpipe_bind_sampler_states(struct pipe_context * pipe,enum pipe_shader_type shader,unsigned start,unsigned num,void ** samplers)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
softpipe_sampler_view_destroy(struct pipe_context * pipe,struct pipe_sampler_view * view)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
softpipe_set_sampler_views(struct pipe_context * pipe,enum pipe_shader_type shader,unsigned start,unsigned num,struct pipe_sampler_view ** views)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->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 
157 static void
softpipe_delete_sampler_state(struct pipe_context * pipe,void * sampler)158 softpipe_delete_sampler_state(struct pipe_context *pipe,
159                               void *sampler)
160 {
161    FREE( sampler );
162 }
163 
164 
165 static void
prepare_shader_sampling(struct softpipe_context * sp,unsigned num,struct pipe_sampler_view ** views,unsigned shader_type,struct pipe_resource * mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])166 prepare_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  */
277 void
softpipe_prepare_vertex_sampling(struct softpipe_context * sp,unsigned num,struct pipe_sampler_view ** views)278 softpipe_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 
286 void
softpipe_cleanup_vertex_sampling(struct softpipe_context * ctx)287 softpipe_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  */
299 void
softpipe_prepare_geometry_sampling(struct softpipe_context * sp,unsigned num,struct pipe_sampler_view ** views)300 softpipe_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 
308 void
softpipe_cleanup_geometry_sampling(struct softpipe_context * ctx)309 softpipe_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 
318 void
softpipe_init_sampler_funcs(struct pipe_context * pipe)319 softpipe_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