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