draw_pt_emit.c revision 7462f0557f9cce73ff2d32e62ef110b5d8622f87 
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 i;
53   boolean ok;
54
55   ok = draw->render->set_primitive(draw->render, prim);
56   if (!ok) {
57      assert(0);
58      return;
59   }
60
61   /* Must do this after set_primitive() above:
62    */
63   vinfo = draw->render->get_vertex_info(draw->render);
64
65
66   /* Translate from pipeline vertices to hw vertices.
67    */
68   dst_offset = 0;
69   for (i = 0; i < vinfo->num_attribs; i++) {
70      unsigned emit_sz = 0;
71      unsigned src_buffer = 0;
72      unsigned output_format;
73      unsigned src_offset = (vinfo->src_index[i] * 4 * sizeof(float) );
74
75
76
77      switch (vinfo->emit[i]) {
78      case EMIT_4F:
79	 output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
80	 emit_sz = 4 * sizeof(float);
81	 break;
82      case EMIT_3F:
83	 output_format = PIPE_FORMAT_R32G32B32_FLOAT;
84	 emit_sz = 3 * sizeof(float);
85	 break;
86      case EMIT_2F:
87	 output_format = PIPE_FORMAT_R32G32_FLOAT;
88	 emit_sz = 2 * sizeof(float);
89	 break;
90      case EMIT_1F:
91	 output_format = PIPE_FORMAT_R32_FLOAT;
92	 emit_sz = 1 * sizeof(float);
93	 break;
94      case EMIT_1F_PSIZE:
95	 output_format = PIPE_FORMAT_R32_FLOAT;
96	 emit_sz = 1 * sizeof(float);
97	 src_buffer = 1;
98	 src_offset = 0;
99	 break;
100      case EMIT_4UB:
101	 output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
102	 emit_sz = 4 * sizeof(ubyte);
103      default:
104	 assert(0);
105	 output_format = PIPE_FORMAT_NONE;
106	 emit_sz = 0;
107	 break;
108      }
109
110      hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
111      hw_key.element[i].input_buffer = src_buffer;
112      hw_key.element[i].input_offset = src_offset;
113      hw_key.element[i].output_format = output_format;
114      hw_key.element[i].output_offset = dst_offset;
115
116      dst_offset += emit_sz;
117   }
118
119   hw_key.nr_elements = vinfo->num_attribs;
120   hw_key.output_stride = vinfo->size * 4;
121
122   if (!emit->translate ||
123       translate_key_compare(&emit->translate->key, &hw_key) != 0)
124   {
125      translate_key_sanitize(&hw_key);
126      emit->translate = translate_cache_find(emit->cache, &hw_key);
127   }
128}
129
130
131void draw_pt_emit( struct pt_emit *emit,
132		   const float (*vertex_data)[4],
133		   unsigned vertex_count,
134		   unsigned stride,
135		   const ushort *elts,
136		   unsigned count )
137{
138   struct draw_context *draw = emit->draw;
139   struct translate *translate = emit->translate;
140   struct vbuf_render *render = draw->render;
141   void *hw_verts;
142
143   /* XXX: need to flush to get prim_vbuf.c to release its allocation??
144    */
145   draw_do_flush( draw, DRAW_FLUSH_BACKEND );
146
147   hw_verts = render->allocate_vertices(render,
148					(ushort)translate->key.output_stride,
149					(ushort)vertex_count);
150   if (!hw_verts) {
151      assert(0);
152      return;
153   }
154
155   translate->set_buffer(translate,
156			 0,
157			 vertex_data,
158			 stride );
159
160   translate->set_buffer(translate,
161			 1,
162			 &draw->rasterizer->point_size,
163			 0);
164
165   translate->run( translate,
166		   0,
167		   vertex_count,
168		   hw_verts );
169
170   render->draw(render,
171		elts,
172		count);
173
174   render->release_vertices(render,
175			    hw_verts,
176			    translate->key.output_stride,
177			    vertex_count);
178}
179
180
181struct pt_emit *draw_pt_emit_create( struct draw_context *draw )
182{
183   struct pt_emit *emit = CALLOC_STRUCT(pt_emit);
184   if (!emit)
185      return NULL;
186
187   emit->draw = draw;
188   emit->cache = translate_cache_create();
189   if (!emit->cache) {
190      FREE(emit);
191      return NULL;
192   }
193
194   return emit;
195}
196
197void draw_pt_emit_destroy( struct pt_emit *emit )
198{
199   if (emit->cache)
200      translate_cache_destroy(emit->cache);
201
202   FREE(emit);
203}
204