draw_pt_emit.c revision cec016271ccf38d2f32e426f96e7d5d1fdf962f7 
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};
44
45void draw_pt_emit_prepare( struct pt_emit *emit,
46			   unsigned prim )
47{
48   struct draw_context *draw = emit->draw;
49   const struct vertex_info *vinfo;
50   unsigned dst_offset;
51   struct translate_key hw_key;
52   unsigned keysize;
53   unsigned i;
54   boolean ok;
55
56   ok = draw->render->set_primitive(draw->render, prim);
57   if (!ok) {
58      assert(0);
59      return;
60   }
61
62   /* Must do this after set_primitive() above:
63    */
64   vinfo = draw->render->get_vertex_info(draw->render);
65   keysize = 2*4 + vinfo->num_attribs * sizeof(hw_key.element[0]);
66
67   /* Translate from pipeline vertices to hw vertices.
68    */
69   dst_offset = 0;
70   for (i = 0; i < vinfo->num_attribs; i++) {
71      unsigned emit_sz = 0;
72      unsigned src_buffer = 0;
73      unsigned output_format;
74      unsigned src_offset = (vinfo->src_index[i] * 4 * sizeof(float) );
75
76
77
78      switch (vinfo->emit[i]) {
79      case EMIT_4F:
80	 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
81	 emit_sz = 4 * sizeof(float);
82	 break;
83      case EMIT_3F:
84	 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
85	 emit_sz = 3 * sizeof(float);
86	 break;
87      case EMIT_2F:
88	 output_format = PIPE_FORMAT_R32G32_FLOAT;
89	 emit_sz = 2 * sizeof(float);
90	 break;
91      case EMIT_1F:
92	 output_format = PIPE_FORMAT_R32_FLOAT;
93	 emit_sz = 1 * sizeof(float);
94	 break;
95      case EMIT_1F_PSIZE:
96	 output_format = PIPE_FORMAT_R32_FLOAT;
97	 emit_sz = 1 * sizeof(float);
98	 src_buffer = 1;
99	 src_offset = 0;
100	 break;
101      case EMIT_4UB:
102	 output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
103	 emit_sz = 4 * sizeof(ubyte);
104      default:
105	 assert(0);
106	 output_format = PIPE_FORMAT_NONE;
107	 emit_sz = 0;
108	 break;
109      }
110
111      hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
112      hw_key.element[i].input_buffer = src_buffer;
113      hw_key.element[i].input_offset = src_offset;
114      hw_key.element[i].output_format = output_format;
115      hw_key.element[i].output_offset = dst_offset;
116
117      dst_offset += emit_sz;
118   }
119
120   hw_key.nr_elements = vinfo->num_attribs;
121   hw_key.output_stride = vinfo->size * 4;
122
123   if (!emit->translate ||
124       memcmp(&emit->translate->key, &hw_key, keysize) != 0)
125   {
126      memset((char *)&hw_key + keysize, 0, sizeof(hw_key) - keysize);
127      emit->translate = translate_cache_find(emit->cache, &hw_key);
128   }
129}
130
131
132void draw_pt_emit( struct pt_emit *emit,
133		   const float (*vertex_data)[4],
134		   unsigned vertex_count,
135		   unsigned stride,
136		   const ushort *elts,
137		   unsigned count )
138{
139   struct draw_context *draw = emit->draw;
140   struct translate *translate = emit->translate;
141   struct vbuf_render *render = draw->render;
142   void *hw_verts;
143
144   /* XXX: need to flush to get prim_vbuf.c to release its allocation??
145    */
146   draw_do_flush( draw, DRAW_FLUSH_BACKEND );
147
148   hw_verts = render->allocate_vertices(render,
149					(ushort)translate->key.output_stride,
150					(ushort)count);
151   if (!hw_verts) {
152      assert(0);
153      return;
154   }
155
156   translate->set_buffer(translate,
157			 0,
158			 vertex_data,
159			 stride );
160
161   translate->set_buffer(translate,
162			 1,
163			 &draw->rasterizer->point_size,
164			 0);
165
166   translate->run( translate,
167		   0,
168		   vertex_count,
169		   hw_verts );
170
171   render->draw(render,
172		elts,
173		count);
174
175   render->release_vertices(render,
176			    hw_verts,
177			    translate->key.output_stride,
178			    vertex_count);
179}
180
181
182void draw_pt_emit_linear(struct pt_emit *emit,
183                         const float (*vertex_data)[4],
184                         unsigned vertex_count,
185                         unsigned stride,
186                         unsigned start,
187                         unsigned count)
188{
189   struct draw_context *draw = emit->draw;
190   struct translate *translate = emit->translate;
191   struct vbuf_render *render = draw->render;
192   void *hw_verts;
193
194#if 0
195   debug_printf("Linear emit\n");
196#endif
197   /* XXX: need to flush to get prim_vbuf.c to release its allocation??
198    */
199   draw_do_flush( draw, DRAW_FLUSH_BACKEND );
200
201   hw_verts = render->allocate_vertices(render,
202					(ushort)translate->key.output_stride,
203					(ushort)count);
204   if (!hw_verts) {
205      assert(0);
206      return;
207   }
208
209   translate->set_buffer(translate, 0,
210			 vertex_data, stride);
211
212   translate->set_buffer(translate, 1,
213			 &draw->rasterizer->point_size,
214			 0);
215
216   translate->run(translate,
217                  0,
218                  vertex_count,
219                  hw_verts);
220
221   render->draw_arrays(render, start, count);
222
223   render->release_vertices(render,
224			    hw_verts,
225			    translate->key.output_stride,
226			    vertex_count);
227}
228
229struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
230{
231   struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
232   if (!emit)
233      return NULL;
234
235   emit->draw = draw;
236   emit->cache = translate_cache_create();
237   if (!emit->cache) {
238      FREE(emit);
239      return NULL;
240   }
241
242   return emit;
243}
244
245void draw_pt_emit_destroy( struct pt_emit *emit )
246{
247   translate_cache_destroy(emit->cache);
248
249   FREE(emit);
250}
251