1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "draw/draw_private.h"
#include "draw/draw_pipe.h"
#include "util/u_debug.h"
boolean draw_pipeline_init( struct draw_context *draw )
{
/* create pipeline stages */
draw->pipeline.wide_line = draw_wide_line_stage( draw );
draw->pipeline.wide_point = draw_wide_point_stage( draw );
draw->pipeline.stipple = draw_stipple_stage( draw );
draw->pipeline.unfilled = draw_unfilled_stage( draw );
draw->pipeline.twoside = draw_twoside_stage( draw );
draw->pipeline.offset = draw_offset_stage( draw );
draw->pipeline.clip = draw_clip_stage( draw );
draw->pipeline.flatshade = draw_flatshade_stage( draw );
draw->pipeline.cull = draw_cull_stage( draw );
draw->pipeline.validate = draw_validate_stage( draw );
draw->pipeline.first = draw->pipeline.validate;
if (!draw->pipeline.wide_line ||
!draw->pipeline.wide_point ||
!draw->pipeline.stipple ||
!draw->pipeline.unfilled ||
!draw->pipeline.twoside ||
!draw->pipeline.offset ||
!draw->pipeline.clip ||
!draw->pipeline.flatshade ||
!draw->pipeline.cull ||
!draw->pipeline.validate)
return FALSE;
/* these defaults are oriented toward the needs of softpipe */
draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */
draw->pipeline.wide_line_threshold = 1.0;
draw->pipeline.wide_point_sprites = FALSE;
draw->pipeline.line_stipple = TRUE;
draw->pipeline.point_sprite = TRUE;
return TRUE;
}
void draw_pipeline_destroy( struct draw_context *draw )
{
if (draw->pipeline.wide_line)
draw->pipeline.wide_line->destroy( draw->pipeline.wide_line );
if (draw->pipeline.wide_point)
draw->pipeline.wide_point->destroy( draw->pipeline.wide_point );
if (draw->pipeline.stipple)
draw->pipeline.stipple->destroy( draw->pipeline.stipple );
if (draw->pipeline.unfilled)
draw->pipeline.unfilled->destroy( draw->pipeline.unfilled );
if (draw->pipeline.twoside)
draw->pipeline.twoside->destroy( draw->pipeline.twoside );
if (draw->pipeline.offset)
draw->pipeline.offset->destroy( draw->pipeline.offset );
if (draw->pipeline.clip)
draw->pipeline.clip->destroy( draw->pipeline.clip );
if (draw->pipeline.flatshade)
draw->pipeline.flatshade->destroy( draw->pipeline.flatshade );
if (draw->pipeline.cull)
draw->pipeline.cull->destroy( draw->pipeline.cull );
if (draw->pipeline.validate)
draw->pipeline.validate->destroy( draw->pipeline.validate );
if (draw->pipeline.aaline)
draw->pipeline.aaline->destroy( draw->pipeline.aaline );
if (draw->pipeline.aapoint)
draw->pipeline.aapoint->destroy( draw->pipeline.aapoint );
if (draw->pipeline.pstipple)
draw->pipeline.pstipple->destroy( draw->pipeline.pstipple );
if (draw->pipeline.rasterize)
draw->pipeline.rasterize->destroy( draw->pipeline.rasterize );
}
/**
* Build primitive to render a point with vertex at v0.
*/
static void do_point( struct draw_context *draw,
const char *v0 )
{
struct prim_header prim;
prim.flags = 0;
prim.pad = 0;
prim.v[0] = (struct vertex_header *)v0;
draw->pipeline.first->point( draw->pipeline.first, &prim );
}
/**
* Build primitive to render a line with vertices at v0, v1.
* \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
*/
static void do_line( struct draw_context *draw,
ushort flags,
const char *v0,
const char *v1 )
{
struct prim_header prim;
prim.flags = flags;
prim.pad = 0;
prim.v[0] = (struct vertex_header *)v0;
prim.v[1] = (struct vertex_header *)v1;
draw->pipeline.first->line( draw->pipeline.first, &prim );
}
/**
* Build primitive to render a triangle with vertices at v0, v1, v2.
* \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE
*/
static void do_triangle( struct draw_context *draw,
ushort flags,
char *v0,
char *v1,
char *v2 )
{
struct prim_header prim;
prim.v[0] = (struct vertex_header *)v0;
prim.v[1] = (struct vertex_header *)v1;
prim.v[2] = (struct vertex_header *)v2;
prim.flags = flags;
prim.pad = 0;
draw->pipeline.first->tri( draw->pipeline.first, &prim );
}
/*
* Set up macros for draw_pt_decompose.h template code.
* This code uses vertex indexes / elements.
*/
/* emit first quad vertex as first vertex in triangles */
#define QUAD_FIRST_PV(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * elts[i0], \
verts + stride * elts[i1], \
verts + stride * elts[i2]); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_1 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * elts[i0], \
verts + stride * elts[i2], \
verts + stride * elts[i3])
/* emit last quad vertex as last vertex in triangles */
#define QUAD_LAST_PV(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * elts[i0], \
verts + stride * elts[i1], \
verts + stride * elts[i3]); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * elts[i1], \
verts + stride * elts[i2], \
verts + stride * elts[i3])
#define TRIANGLE(flags,i0,i1,i2) \
do_triangle( draw, \
elts[i0], /* flags */ \
verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK) );
#define LINE(flags,i0,i1) \
do_line( draw, \
elts[i0], \
verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK) );
#define POINT(i0) \
do_point( draw, \
verts + stride * elts[i0] )
#define FUNC pipe_run
#define ARGS \
struct draw_context *draw, \
unsigned prim, \
struct vertex_header *vertices, \
unsigned stride, \
const ushort *elts
#define LOCAL_VARS \
char *verts = (char *)vertices; \
boolean flatfirst = (draw->rasterizer->flatshade && \
draw->rasterizer->flatshade_first); \
unsigned i; \
ushort flags
#define FLUSH
#include "draw_pt_decompose.h"
#undef ARGS
#undef LOCAL_VARS
/**
* Code to run the pipeline on a fairly arbitrary collection of vertices.
* For drawing indexed primitives.
*
* Vertex headers must be pre-initialized with the
* UNDEFINED_VERTEX_ID, this code will cause that id to become
* overwritten, so it may have to be reset if there is the intention
* to reuse the vertices.
*
* This code provides a callback to reset the vertex id's which the
* draw_vbuf.c code uses when it has to perform a flush.
*/
void draw_pipeline_run( struct draw_context *draw,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
unsigned i, start;
draw->pipeline.verts = (char *)vert_info->verts;
draw->pipeline.vertex_stride = vert_info->stride;
draw->pipeline.vertex_count = vert_info->count;
for (start = i = 0;
i < prim_info->primitive_count;
start += prim_info->primitive_lengths[i], i++)
{
unsigned count = prim_info->primitive_lengths[i];
pipe_run(draw,
prim_info->prim,
vert_info->verts,
vert_info->stride,
prim_info->elts + start,
count);
}
draw->pipeline.verts = NULL;
draw->pipeline.vertex_count = 0;
}
/*
* Set up macros for draw_pt_decompose.h template code.
* This code is for non-indexed (aka linear) rendering (no elts).
*/
/* emit first quad vertex as first vertex in triangles */
#define QUAD_FIRST_PV(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1), \
verts + stride * (i2)); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_1 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i2), \
verts + stride * (i3))
/* emit last quad vertex as last vertex in triangles */
#define QUAD_LAST_PV(i0,i1,i2,i3) \
do_triangle( draw, \
( DRAW_PIPE_RESET_STIPPLE | \
DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_2 ), \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1), \
verts + stride * (i3)); \
do_triangle( draw, \
( DRAW_PIPE_EDGE_FLAG_0 | \
DRAW_PIPE_EDGE_FLAG_1 ), \
verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i2), \
verts + stride * (i3))
#define TRIANGLE(flags,i0,i1,i2) \
do_triangle( draw, \
flags, /* flags */ \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1), \
verts + stride * (i2))
#define LINE(flags,i0,i1) \
do_line( draw, \
flags, \
verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \
verts + stride * (i1))
#define POINT(i0) \
do_point( draw, \
verts + stride * i0 )
#define FUNC pipe_run_linear
#define ARGS \
struct draw_context *draw, \
unsigned prim, \
struct vertex_header *vertices, \
unsigned stride
#define LOCAL_VARS \
char *verts = (char *)vertices; \
boolean flatfirst = (draw->rasterizer->flatshade && \
draw->rasterizer->flatshade_first); \
unsigned i; \
ushort flags
#define FLUSH
#include "draw_pt_decompose.h"
/*
* For drawing non-indexed primitives.
*/
void draw_pipeline_run_linear( struct draw_context *draw,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
unsigned i, start;
for (start = i = 0;
i < prim_info->primitive_count;
start += prim_info->primitive_lengths[i], i++)
{
unsigned count = prim_info->primitive_lengths[i];
char *verts = ((char*)vert_info->verts) +
(start * vert_info->stride);
draw->pipeline.verts = verts;
draw->pipeline.vertex_stride = vert_info->stride;
draw->pipeline.vertex_count = count;
pipe_run_linear(draw,
prim_info->prim,
(struct vertex_header*)verts,
vert_info->stride,
vert_info->count);
}
draw->pipeline.verts = NULL;
draw->pipeline.vertex_count = 0;
}
void draw_pipeline_flush( struct draw_context *draw,
unsigned flags )
{
draw->pipeline.first->flush( draw->pipeline.first, flags );
draw->pipeline.first = draw->pipeline.validate;
}
|
