1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "pipe/p_util.h"
29 #include "draw/draw_context.h"
30 #include "draw/draw_private.h"
31 #include "draw/draw_pt.h"
34 #define DRAW_MAX (16*FETCH_MAX)
36 struct varray_frontend
{
37 struct draw_pt_front_end base
;
38 struct draw_context
*draw
;
40 ushort draw_elts
[DRAW_MAX
];
41 unsigned fetch_elts
[FETCH_MAX
];
48 struct draw_pt_middle_end
*middle
;
54 static void varray_flush(struct varray_frontend
*varray
)
56 if (varray
->draw_count
) {
58 debug_printf("FLUSH fc = %d, dc = %d\n",
61 debug_printf("\telt0 = %d, eltx = %d, draw0 = %d, drawx = %d\n",
62 varray
->fetch_elts
[0],
63 varray
->fetch_elts
[varray
->fetch_count
-1],
65 varray
->draw_elts
[varray
->draw_count
-1]);
67 varray
->middle
->run(varray
->middle
,
74 varray
->fetch_count
= 0;
75 varray
->draw_count
= 0;
78 static void varray_flush_linear(struct varray_frontend
*varray
,
79 unsigned start
, unsigned count
)
83 debug_printf("FLUSH LINEAR start = %d, count = %d\n",
87 assert(varray
->middle
->run_linear
);
88 varray
->middle
->run_linear(varray
->middle
, start
, count
);
92 static INLINE
void fetch_init(struct varray_frontend
*varray
,
97 debug_printf("FETCH INIT c = %d, fs = %d\n",
101 for (idx
= 0; idx
< count
; ++idx
) {
102 varray
->fetch_elts
[idx
] = varray
->fetch_start
+ idx
;
104 varray
->fetch_start
+= idx
;
105 varray
->fetch_count
= idx
;
109 static boolean
split_prim_inplace(unsigned prim
, unsigned *first
, unsigned *incr
)
112 case PIPE_PRIM_POINTS
:
116 case PIPE_PRIM_LINES
:
120 case PIPE_PRIM_LINE_STRIP
:
124 case PIPE_PRIM_TRIANGLES
:
128 case PIPE_PRIM_TRIANGLE_STRIP
:
132 case PIPE_PRIM_TRIANGLE_FAN
:
136 case PIPE_PRIM_QUADS
:
140 case PIPE_PRIM_QUAD_STRIP
:
144 case PIPE_PRIM_POLYGON
:
150 *incr
= 1; /* set to one so that count % incr works */
156 static INLINE
void add_draw_el(struct varray_frontend
*varray
,
159 varray
->draw_elts
[varray
->draw_count
++] = idx
;
163 static INLINE
void varray_triangle( struct varray_frontend
*varray
,
168 add_draw_el(varray
, i0
);
169 add_draw_el(varray
, i1
);
170 add_draw_el(varray
, i2
);
173 static INLINE
void varray_line( struct varray_frontend
*varray
,
177 add_draw_el(varray
, i0
);
178 add_draw_el(varray
, i1
);
182 static INLINE
void varray_point( struct varray_frontend
*varray
,
185 add_draw_el(varray
, i0
);
190 #define TRIANGLE(vc,i0,i1,i2) varray_triangle(vc,i0,i1,i2)
191 #define LINE(vc,i0,i1) varray_line(vc,i0,i1)
192 #define POINT(vc,i0) varray_point(vc,i0)
193 #define FUNC varray_run
194 #include "draw_pt_varray_tmp_linear.h"
198 static unsigned decompose_prim
[PIPE_PRIM_POLYGON
+ 1] = {
201 PIPE_PRIM_LINE_STRIP
,
202 PIPE_PRIM_LINES
, /* decomposed */
204 PIPE_PRIM_TRIANGLE_STRIP
,
205 PIPE_PRIM_TRIANGLES
, /* decomposed */
207 PIPE_PRIM_QUAD_STRIP
,
208 PIPE_PRIM_TRIANGLES
/* decomposed */
213 static void varray_prepare(struct draw_pt_front_end
*frontend
,
215 struct draw_pt_middle_end
*middle
,
218 struct varray_frontend
*varray
= (struct varray_frontend
*)frontend
;
220 varray
->base
.run
= varray_run
;
222 varray
->input_prim
= prim
;
223 varray
->output_prim
= decompose_prim
[prim
];
225 varray
->middle
= middle
;
226 middle
->prepare(middle
, varray
->output_prim
, opt
);
232 static void varray_finish(struct draw_pt_front_end
*frontend
)
234 struct varray_frontend
*varray
= (struct varray_frontend
*)frontend
;
235 varray
->middle
->finish(varray
->middle
);
236 varray
->middle
= NULL
;
239 static void varray_destroy(struct draw_pt_front_end
*frontend
)
245 struct draw_pt_front_end
*draw_pt_varray(struct draw_context
*draw
)
247 struct varray_frontend
*varray
= CALLOC_STRUCT(varray_frontend
);
251 varray
->base
.prepare
= varray_prepare
;
252 varray
->base
.run
= NULL
;
253 varray
->base
.finish
= varray_finish
;
254 varray
->base
.destroy
= varray_destroy
;
257 return &varray
->base
;