1/**************************************************************************
2 *
3 * Copyright 2008 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#include "util/u_memory.h"
29#include "util/u_math.h"
30#include "util/u_format.h"
31#include "draw/draw_context.h"
32#include "draw/draw_private.h"
33#include "draw/draw_pt.h"
34#include "translate/translate.h"
35#include "translate/translate_cache.h"
36
37
38struct pt_fetch {
39   struct draw_context *draw;
40
41   struct translate *translate;
42
43   unsigned vertex_size;
44
45   struct translate_cache *cache;
46};
47
48
49/**
50 * Perform the fetch from API vertex elements & vertex buffers, to a
51 * contiguous set of float[4] attributes as required for the
52 * vertex_shader->run_linear() method.
53 *
54 * This is used in all cases except pure passthrough
55 * (draw_pt_fetch_emit.c) which has its own version to translate
56 * directly to hw vertices.
57 *
58 */
59void
60draw_pt_fetch_prepare(struct pt_fetch *fetch,
61                      unsigned vs_input_count,
62                      unsigned vertex_size,
63                      unsigned instance_id_index)
64{
65   struct draw_context *draw = fetch->draw;
66   unsigned nr_inputs;
67   unsigned i, nr = 0, ei = 0;
68   unsigned dst_offset = 0;
69   unsigned num_extra_inputs = 0;
70   struct translate_key key;
71
72   fetch->vertex_size = vertex_size;
73
74   /* Leave the clipmask/edgeflags/pad/vertex_id,
75    * clip[] and whatever else in the header untouched.
76    */
77   dst_offset = offsetof(struct vertex_header, data);
78
79   if (instance_id_index != ~0) {
80      num_extra_inputs++;
81   }
82
83   assert(draw->pt.nr_vertex_elements + num_extra_inputs >= vs_input_count);
84
85   nr_inputs = MIN2(vs_input_count, draw->pt.nr_vertex_elements + num_extra_inputs);
86
87   for (i = 0; i < nr_inputs; i++) {
88      if (i == instance_id_index) {
89         key.element[nr].type = TRANSLATE_ELEMENT_INSTANCE_ID;
90         key.element[nr].input_format = PIPE_FORMAT_R32_USCALED;
91         key.element[nr].output_format = PIPE_FORMAT_R32_USCALED;
92         key.element[nr].output_offset = dst_offset;
93
94         dst_offset += sizeof(uint);
95      } else if (util_format_is_pure_sint(draw->pt.vertex_element[i].src_format)) {
96         key.element[nr].type = TRANSLATE_ELEMENT_NORMAL;
97         key.element[nr].input_format = draw->pt.vertex_element[ei].src_format;
98         key.element[nr].input_buffer = draw->pt.vertex_element[ei].vertex_buffer_index;
99         key.element[nr].input_offset = draw->pt.vertex_element[ei].src_offset;
100         key.element[nr].instance_divisor = draw->pt.vertex_element[ei].instance_divisor;
101         key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_SINT;
102         key.element[nr].output_offset = dst_offset;
103
104         ei++;
105         dst_offset += 4 * sizeof(int);
106      } else if (util_format_is_pure_uint(draw->pt.vertex_element[i].src_format)) {
107         key.element[nr].type = TRANSLATE_ELEMENT_NORMAL;
108         key.element[nr].input_format = draw->pt.vertex_element[ei].src_format;
109         key.element[nr].input_buffer = draw->pt.vertex_element[ei].vertex_buffer_index;
110         key.element[nr].input_offset = draw->pt.vertex_element[ei].src_offset;
111         key.element[nr].instance_divisor = draw->pt.vertex_element[ei].instance_divisor;
112         key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_UINT;
113         key.element[nr].output_offset = dst_offset;
114
115         ei++;
116         dst_offset += 4 * sizeof(unsigned);
117      } else {
118         key.element[nr].type = TRANSLATE_ELEMENT_NORMAL;
119         key.element[nr].input_format = draw->pt.vertex_element[ei].src_format;
120         key.element[nr].input_buffer = draw->pt.vertex_element[ei].vertex_buffer_index;
121         key.element[nr].input_offset = draw->pt.vertex_element[ei].src_offset;
122         key.element[nr].instance_divisor = draw->pt.vertex_element[ei].instance_divisor;
123         key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
124         key.element[nr].output_offset = dst_offset;
125
126         ei++;
127         dst_offset += 4 * sizeof(float);
128      }
129
130      nr++;
131   }
132
133   assert(dst_offset <= vertex_size);
134
135   key.nr_elements = nr;
136   key.output_stride = vertex_size;
137
138   if (!fetch->translate ||
139       translate_key_compare(&fetch->translate->key, &key) != 0)
140   {
141      translate_key_sanitize(&key);
142      fetch->translate = translate_cache_find(fetch->cache, &key);
143   }
144}
145
146
147void
148draw_pt_fetch_run(struct pt_fetch *fetch,
149                  const unsigned *elts,
150                  unsigned count,
151                  char *verts)
152{
153   struct draw_context *draw = fetch->draw;
154   struct translate *translate = fetch->translate;
155   unsigned i;
156
157   for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
158      translate->set_buffer(translate,
159			    i,
160			    ((char *)draw->pt.user.vbuffer[i].map +
161			     draw->pt.vertex_buffer[i].buffer_offset),
162			    draw->pt.vertex_buffer[i].stride,
163			    draw->pt.max_index);
164   }
165
166   translate->run_elts( translate,
167			elts,
168			count,
169                        draw->start_instance,
170                        draw->instance_id,
171			verts );
172}
173
174
175void
176draw_pt_fetch_run_linear(struct pt_fetch *fetch,
177                         unsigned start,
178                         unsigned count,
179                         char *verts)
180{
181   struct draw_context *draw = fetch->draw;
182   struct translate *translate = fetch->translate;
183   unsigned i;
184
185   for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
186      translate->set_buffer(translate,
187			    i,
188			    ((char *)draw->pt.user.vbuffer[i].map +
189			     draw->pt.vertex_buffer[i].buffer_offset),
190			    draw->pt.vertex_buffer[i].stride,
191			    draw->pt.max_index);
192   }
193
194   translate->run( translate,
195                   start,
196                   count,
197                   draw->start_instance,
198                   draw->instance_id,
199                   verts );
200}
201
202
203struct pt_fetch *
204draw_pt_fetch_create(struct draw_context *draw)
205{
206   struct pt_fetch *fetch = CALLOC_STRUCT(pt_fetch);
207   if (!fetch)
208      return NULL;
209
210   fetch->draw = draw;
211   fetch->cache = translate_cache_create();
212   if (!fetch->cache) {
213      FREE(fetch);
214      return NULL;
215   }
216
217   return fetch;
218}
219
220
221void
222draw_pt_fetch_destroy(struct pt_fetch *fetch)
223{
224   if (fetch->cache)
225      translate_cache_destroy(fetch->cache);
226
227   FREE(fetch);
228}
229