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 "draw/draw_context.h"
30 #include "draw/draw_private.h"
31 #include "draw/draw_vbuf.h"
32 #include "draw/draw_vertex.h"
33 #include "draw/draw_pt.h"
34 #include "translate/translate.h"
35 #include "translate/translate_cache.h"
36 #include "util/u_prim.h"
37
38 struct pt_emit {
39 struct draw_context *draw;
40
41 struct translate *translate;
42
43 struct translate_cache *cache;
44 unsigned prim;
45
46 const struct vertex_info *vinfo;
47
48 float zero4[4];
49 };
50
51
52 void
draw_pt_emit_prepare(struct pt_emit * emit,enum mesa_prim prim,unsigned * max_vertices)53 draw_pt_emit_prepare(struct pt_emit *emit,
54 enum mesa_prim prim,
55 unsigned *max_vertices)
56 {
57 struct draw_context *draw = emit->draw;
58 const struct vertex_info *vinfo;
59 struct translate_key hw_key;
60
61 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
62 */
63 draw_do_flush(draw, DRAW_FLUSH_BACKEND);
64
65 /* XXX: may need to defensively reset this later on as clipping can
66 * clobber this state in the render backend.
67 */
68 emit->prim = prim;
69
70 draw->render->set_primitive(draw->render, emit->prim);
71 if (draw->render->set_view_index)
72 draw->render->set_view_index(draw->render, draw->pt.user.viewid);
73
74 /* Must do this after set_primitive() above:
75 */
76 emit->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
77
78 /* Translate from pipeline vertices to hw vertices.
79 */
80 unsigned dst_offset = 0;
81 for (unsigned i = 0; i < vinfo->num_attribs; i++) {
82 unsigned emit_sz = 0;
83 unsigned src_buffer = 0;
84 unsigned output_format;
85 unsigned src_offset = vinfo->attrib[i].src_index * 4 * sizeof(float);
86
87 output_format = draw_translate_vinfo_format(vinfo->attrib[i].emit);
88 emit_sz = draw_translate_vinfo_size(vinfo->attrib[i].emit);
89
90 /* doesn't handle EMIT_OMIT */
91 assert(emit_sz != 0);
92
93 if (vinfo->attrib[i].emit == EMIT_1F_PSIZE) {
94 src_buffer = 1;
95 src_offset = 0;
96 } else if (vinfo->attrib[i].src_index == DRAW_ATTR_NONEXIST) {
97 /* elements which don't exist will get assigned zeros */
98 src_buffer = 2;
99 src_offset = 0;
100 }
101
102 hw_key.element[i].type = TRANSLATE_ELEMENT_NORMAL;
103 hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
104 hw_key.element[i].input_buffer = src_buffer;
105 hw_key.element[i].input_offset = src_offset;
106 hw_key.element[i].instance_divisor = 0;
107 hw_key.element[i].output_format = output_format;
108 hw_key.element[i].output_offset = dst_offset;
109
110 dst_offset += emit_sz;
111 }
112
113 hw_key.nr_elements = vinfo->num_attribs;
114 hw_key.output_stride = vinfo->size * 4;
115
116 if (!emit->translate ||
117 translate_key_compare(&emit->translate->key, &hw_key) != 0) {
118 translate_key_sanitize(&hw_key);
119 emit->translate = translate_cache_find(emit->cache, &hw_key);
120
121 emit->translate->set_buffer(emit->translate, 2, &emit->zero4[0], 0, ~0);
122 }
123
124 if (!vinfo->size)
125 *max_vertices = 0;
126 else
127 *max_vertices = (draw->render->max_vertex_buffer_bytes /
128 (vinfo->size * 4));
129 }
130
131
132 void
draw_pt_emit(struct pt_emit * emit,const struct draw_vertex_info * vert_info,const struct draw_prim_info * prim_info)133 draw_pt_emit(struct pt_emit *emit,
134 const struct draw_vertex_info *vert_info,
135 const struct draw_prim_info *prim_info)
136 {
137 const float (*vertex_data)[4] = (const float (*)[4])vert_info->verts->data;
138 unsigned vertex_count = vert_info->count;
139 unsigned stride = vert_info->stride;
140 const uint16_t *elts = prim_info->elts;
141 struct draw_context *draw = emit->draw;
142 struct translate *translate = emit->translate;
143 struct vbuf_render *render = draw->render;
144 unsigned start, i;
145 void *hw_verts;
146
147 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
148 */
149 draw_do_flush(draw, DRAW_FLUSH_BACKEND);
150
151 if (vertex_count == 0)
152 return;
153
154 /* XXX: and work out some way to coordinate the render primitive
155 * between vbuf.c and here...
156 */
157 render->set_primitive(draw->render, prim_info->prim);
158 if (draw->render->set_view_index)
159 draw->render->set_view_index(draw->render, draw->pt.user.viewid);
160
161 assert(vertex_count <= 65535);
162 render->allocate_vertices(render,
163 (uint16_t)translate->key.output_stride,
164 (uint16_t)vertex_count);
165
166 hw_verts = render->map_vertices(render);
167 if (!hw_verts) {
168 debug_warn_once("map of vertex buffer failed (out of memory?)");
169 return;
170 }
171
172 translate->set_buffer(translate,
173 0,
174 vertex_data,
175 stride,
176 ~0);
177
178 translate->set_buffer(translate,
179 1,
180 &draw->rasterizer->point_size,
181 0,
182 ~0);
183
184 /* fetch/translate vertex attribs to fill hw_verts[] */
185 translate->run(translate,
186 0,
187 vertex_count,
188 0,
189 0,
190 hw_verts);
191
192 if (0) {
193 for (unsigned i = 0; i < vertex_count; i++) {
194 debug_printf("\n\n%s vertex %d:\n", __func__, i);
195 draw_dump_emitted_vertex(emit->vinfo,
196 (const uint8_t *)hw_verts +
197 translate->key.output_stride * i);
198 }
199 }
200
201 render->unmap_vertices(render, 0, vertex_count - 1);
202
203 for (start = i = 0;
204 i < prim_info->primitive_count;
205 start += prim_info->primitive_lengths[i], i++) {
206 render->draw_elements(render,
207 elts + start,
208 prim_info->primitive_lengths[i]);
209 }
210
211 render->release_vertices(render);
212 }
213
214
215 void
draw_pt_emit_linear(struct pt_emit * emit,const struct draw_vertex_info * vert_info,const struct draw_prim_info * prim_info)216 draw_pt_emit_linear(struct pt_emit *emit,
217 const struct draw_vertex_info *vert_info,
218 const struct draw_prim_info *prim_info)
219 {
220 const float (*vertex_data)[4] = (const float (*)[4])vert_info->verts->data;
221 unsigned stride = vert_info->stride;
222 unsigned count = vert_info->count;
223 struct draw_context *draw = emit->draw;
224 struct translate *translate = emit->translate;
225 struct vbuf_render *render = draw->render;
226 void *hw_verts;
227 unsigned start, i;
228
229 #if 0
230 debug_printf("Linear emit\n");
231 #endif
232 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
233 */
234 draw_do_flush(draw, DRAW_FLUSH_BACKEND);
235
236 /* XXX: and work out some way to coordinate the render primitive
237 * between vbuf.c and here...
238 */
239 render->set_primitive(draw->render, prim_info->prim);
240 if (draw->render->set_view_index)
241 draw->render->set_view_index(draw->render, draw->pt.user.viewid);
242
243 assert(count <= 65535);
244 if (!render->allocate_vertices(render,
245 (uint16_t)translate->key.output_stride,
246 (uint16_t)count))
247 goto fail;
248
249 hw_verts = render->map_vertices(render);
250 if (!hw_verts)
251 goto fail;
252
253 translate->set_buffer(translate, 0,
254 vertex_data, stride, count - 1);
255
256 translate->set_buffer(translate, 1,
257 &draw->rasterizer->point_size,
258 0, ~0);
259
260 translate->run(translate,
261 0,
262 count,
263 0,
264 0,
265 hw_verts);
266
267 if (0) {
268 for (unsigned i = 0; i < count; i++) {
269 debug_printf("\n\n%s vertex %d:\n", __func__, i);
270 draw_dump_emitted_vertex(emit->vinfo,
271 (const uint8_t *)hw_verts +
272 translate->key.output_stride * i);
273 }
274 }
275
276 render->unmap_vertices(render, 0, count - 1);
277
278 for (start = i = 0;
279 i < prim_info->primitive_count;
280 start += prim_info->primitive_lengths[i], i++) {
281 render->draw_arrays(render,
282 start,
283 prim_info->primitive_lengths[i]);
284 }
285
286 render->release_vertices(render);
287
288 return;
289
290 fail:
291 debug_warn_once("allocate or map of vertex buffer failed (out of memory?)");
292 return;
293 }
294
295
296 struct pt_emit *
draw_pt_emit_create(struct draw_context * draw)297 draw_pt_emit_create(struct draw_context *draw)
298 {
299 struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
300 if (!emit)
301 return NULL;
302
303 emit->draw = draw;
304 emit->cache = translate_cache_create();
305 if (!emit->cache) {
306 FREE(emit);
307 return NULL;
308 }
309
310 emit->zero4[0] = emit->zero4[1] = emit->zero4[2] = emit->zero4[3] = 0.0f;
311
312 return emit;
313 }
314
315
316 void
draw_pt_emit_destroy(struct pt_emit * emit)317 draw_pt_emit_destroy(struct pt_emit *emit)
318 {
319 if (emit->cache)
320 translate_cache_destroy(emit->cache);
321
322 FREE(emit);
323 }
324