draw_pt_emit.c revision 93bfc94c351a2eafd43ac7a20b362d969f98d86a 
1/**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 "pipe/p_util.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
37struct pt_emit {
38   struct draw_context *draw;
39
40   struct translate *translate;
41
42   struct translate_cache *cache;
43   unsigned prim;
44};
45
46void draw_pt_emit_prepare( struct pt_emit *emit,
47			   unsigned prim )
48{
49   struct draw_context *draw = emit->draw;
50   const struct vertex_info *vinfo;
51   unsigned dst_offset;
52   struct translate_key hw_key;
53   unsigned i;
54   boolean ok;
55
56
57   /* XXX: may need to defensively reset this later on as clipping can
58    * clobber this state in the render backend.
59    */
60   emit->prim = prim;
61
62   ok = draw->render->set_primitive(draw->render, emit->prim);
63   if (!ok) {
64      assert(0);
65      return;
66   }
67
68   /* Must do this after set_primitive() above:
69    */
70   vinfo = draw->render->get_vertex_info(draw->render);
71
72
73   /* Translate from pipeline vertices to hw vertices.
74    */
75   dst_offset = 0;
76   for (i = 0; i < vinfo->num_attribs; i++) {
77      unsigned emit_sz = 0;
78      unsigned src_buffer = 0;
79      unsigned output_format;
80      unsigned src_offset = (vinfo->src_index[i] * 4 * sizeof(float) );
81
82
83
84      switch (vinfo->emit[i]) {
85      case EMIT_4F:
86	 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
87	 emit_sz = 4 * sizeof(float);
88	 break;
89      case EMIT_3F:
90	 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
91	 emit_sz = 3 * sizeof(float);
92	 break;
93      case EMIT_2F:
94	 output_format = PIPE_FORMAT_R32G32_FLOAT;
95	 emit_sz = 2 * sizeof(float);
96	 break;
97      case EMIT_1F:
98	 output_format = PIPE_FORMAT_R32_FLOAT;
99	 emit_sz = 1 * sizeof(float);
100	 break;
101      case EMIT_1F_PSIZE:
102	 output_format = PIPE_FORMAT_R32_FLOAT;
103	 emit_sz = 1 * sizeof(float);
104	 src_buffer = 1;
105	 src_offset = 0;
106	 break;
107      case EMIT_4UB:
108	 output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
109	 emit_sz = 4 * sizeof(ubyte);
110         break;
111      default:
112	 assert(0);
113	 output_format = PIPE_FORMAT_NONE;
114	 emit_sz = 0;
115	 break;
116      }
117
118      hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
119      hw_key.element[i].input_buffer = src_buffer;
120      hw_key.element[i].input_offset = src_offset;
121      hw_key.element[i].output_format = output_format;
122      hw_key.element[i].output_offset = dst_offset;
123
124      dst_offset += emit_sz;
125   }
126
127   hw_key.nr_elements = vinfo->num_attribs;
128   hw_key.output_stride = vinfo->size * 4;
129
130   if (!emit->translate ||
131       translate_key_compare(&emit->translate->key, &hw_key) != 0)
132   {
133      translate_key_sanitize(&hw_key);
134      emit->translate = translate_cache_find(emit->cache, &hw_key);
135   }
136}
137
138
139void draw_pt_emit( struct pt_emit *emit,
140		   const float (*vertex_data)[4],
141		   unsigned vertex_count,
142		   unsigned stride,
143		   const ushort *elts,
144		   unsigned count )
145{
146   struct draw_context *draw = emit->draw;
147   struct translate *translate = emit->translate;
148   struct vbuf_render *render = draw->render;
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   /* XXX: and work out some way to coordinate the render primitive
156    * between vbuf.c and here...
157    */
158   if (!draw->render->set_primitive(draw->render, emit->prim)) {
159      assert(0);
160      return;
161   }
162
163   hw_verts = render->allocate_vertices(render,
164					(ushort)translate->key.output_stride,
165					(ushort)vertex_count);
166   if (!hw_verts) {
167      assert(0);
168      return;
169   }
170
171   translate->set_buffer(translate,
172			 0,
173			 vertex_data,
174			 stride );
175
176   translate->set_buffer(translate,
177			 1,
178			 &draw->rasterizer->point_size,
179			 0);
180
181   translate->run( translate,
182		   0,
183		   vertex_count,
184		   hw_verts );
185
186   render->draw(render,
187		elts,
188		count);
189
190   render->release_vertices(render,
191			    hw_verts,
192			    translate->key.output_stride,
193			    vertex_count);
194}
195
196
197void draw_pt_emit_linear(struct pt_emit *emit,
198                         const float (*vertex_data)[4],
199                         unsigned vertex_count,
200                         unsigned stride,
201                         unsigned start,
202                         unsigned count)
203{
204   struct draw_context *draw = emit->draw;
205   struct translate *translate = emit->translate;
206   struct vbuf_render *render = draw->render;
207   void *hw_verts;
208
209#if 0
210   debug_printf("Linear emit\n");
211#endif
212   /* XXX: need to flush to get prim_vbuf.c to release its allocation??
213    */
214   draw_do_flush( draw, DRAW_FLUSH_BACKEND );
215
216   /* XXX: and work out some way to coordinate the render primitive
217    * between vbuf.c and here...
218    */
219   if (!draw->render->set_primitive(draw->render, emit->prim)) {
220      assert(0);
221      return;
222   }
223
224   hw_verts = render->allocate_vertices(render,
225					(ushort)translate->key.output_stride,
226					(ushort)count);
227   if (!hw_verts) {
228      assert(0);
229      return;
230   }
231
232   translate->set_buffer(translate, 0,
233			 vertex_data, stride);
234
235   translate->set_buffer(translate, 1,
236			 &draw->rasterizer->point_size,
237			 0);
238
239   translate->run(translate,
240                  0,
241                  vertex_count,
242                  hw_verts);
243
244   render->draw_arrays(render, start, count);
245
246   render->release_vertices(render,
247			    hw_verts,
248			    translate->key.output_stride,
249			    vertex_count);
250}
251
252struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
253{
254   struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
255   if (!emit)
256      return NULL;
257
258   emit->draw = draw;
259   emit->cache = translate_cache_create();
260   if (!emit->cache) {
261      FREE(emit);
262      return NULL;
263   }
264
265   return emit;
266}
267
268void draw_pt_emit_destroy( struct pt_emit *emit )
269{
270   if (emit->cache)
271      translate_cache_destroy(emit->cache);
272
273   FREE(emit);
274}
275