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-rw-r--r--src/gallium/drivers/i965/brw_clip.h197
1 files changed, 0 insertions, 197 deletions
diff --git a/src/gallium/drivers/i965/brw_clip.h b/src/gallium/drivers/i965/brw_clip.h
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--- a/src/gallium/drivers/i965/brw_clip.h
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1/*
2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
5
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25
26 **********************************************************************/
27 /*
28 * Authors:
29 * Keith Whitwell <keith@tungstengraphics.com>
30 */
31
32#ifndef BRW_CLIP_H
33#define BRW_CLIP_H
34
35#include "pipe/p_state.h"
36#include "brw_reg.h"
37#include "brw_eu.h"
38
39#define MAX_VERTS (3+6+6)
40
41/* Note that if unfilled primitives are being emitted, we have to fix
42 * up polygon offset and flatshading at this point:
43 */
44struct brw_clip_prog_key {
45 GLuint nr_attrs:6;
46 GLuint primitive:4;
47 GLuint nr_userclip:3;
48 GLuint do_flat_shading:1;
49 GLuint do_unfilled:1;
50 GLuint fill_cw:2; /* includes cull information */
51 GLuint fill_ccw:2; /* includes cull information */
52 GLuint offset_cw:1;
53 GLuint offset_ccw:1;
54 GLuint copy_bfc_cw:1;
55 GLuint copy_bfc_ccw:1;
56 GLuint clip_mode:3;
57 GLuint output_hpos:6; /* not always zero? */
58
59 GLuint output_color0:6;
60 GLuint output_color1:6;
61 GLuint output_bfc0:6;
62 GLuint output_bfc1:6;
63 GLuint output_edgeflag:6;
64 GLuint pad1:2;
65
66 GLfloat offset_factor;
67 GLfloat offset_units;
68};
69
70struct brw_clip_prog_data {
71 GLuint curb_read_length; /* user planes? */
72 GLuint clip_mode;
73 GLuint urb_read_length;
74 GLuint total_grf;
75};
76
77#define CLIP_LINE 0
78#define CLIP_POINT 1
79#define CLIP_FILL 2
80#define CLIP_CULL 3
81
82
83#define PRIM_MASK (0x1f)
84
85struct brw_clip_compile {
86 struct brw_compile func;
87 struct brw_clip_prog_key key;
88 struct brw_clip_prog_data prog_data;
89
90 struct {
91 struct brw_reg R0;
92 struct brw_reg vertex[MAX_VERTS];
93
94 struct brw_reg t;
95 struct brw_reg t0, t1;
96 struct brw_reg dp0, dp1;
97
98 struct brw_reg dpPrev;
99 struct brw_reg dp;
100 struct brw_reg loopcount;
101 struct brw_reg nr_verts;
102 struct brw_reg planemask;
103
104 struct brw_reg inlist;
105 struct brw_reg outlist;
106 struct brw_reg freelist;
107
108 struct brw_reg dir;
109 struct brw_reg tmp0, tmp1;
110 struct brw_reg offset;
111
112 struct brw_reg fixed_planes;
113 struct brw_reg plane_equation;
114
115 struct brw_reg ff_sync;
116 } reg;
117
118 /* 3 different ways of expressing vertex size, including
119 * key.nr_attrs.
120 */
121 GLuint nr_regs;
122 GLuint nr_bytes;
123
124 GLuint first_tmp;
125 GLuint last_tmp;
126
127 GLboolean need_direction;
128
129 GLuint last_mrf;
130
131 GLuint header_position_offset;
132
133 GLuint nr_color_attrs;
134 GLuint offset_color0;
135 GLuint offset_color1;
136 GLuint offset_bfc0;
137 GLuint offset_bfc1;
138
139 GLuint offset_hpos;
140 GLuint offset_edgeflag;
141};
142
143#define ATTR_SIZE (4*4)
144
145/* Points are only culled, so no need for a clip routine, however it
146 * works out easier to have a dummy one.
147 */
148void brw_emit_unfilled_clip( struct brw_clip_compile *c );
149void brw_emit_tri_clip( struct brw_clip_compile *c );
150void brw_emit_line_clip( struct brw_clip_compile *c );
151void brw_emit_point_clip( struct brw_clip_compile *c );
152
153/* brw_clip_tri.c, for use by the unfilled clip routine:
154 */
155void brw_clip_tri_init_vertices( struct brw_clip_compile *c );
156void brw_clip_tri_flat_shade( struct brw_clip_compile *c );
157void brw_clip_tri( struct brw_clip_compile *c );
158void brw_clip_tri_emit_polygon( struct brw_clip_compile *c );
159void brw_clip_tri_alloc_regs( struct brw_clip_compile *c,
160 GLuint nr_verts );
161
162
163/* Utils:
164 */
165
166void brw_clip_interp_vertex( struct brw_clip_compile *c,
167 struct brw_indirect dest_ptr,
168 struct brw_indirect v0_ptr, /* from */
169 struct brw_indirect v1_ptr, /* to */
170 struct brw_reg t0,
171 GLboolean force_edgeflag );
172
173void brw_clip_init_planes( struct brw_clip_compile *c );
174
175void brw_clip_emit_vue(struct brw_clip_compile *c,
176 struct brw_indirect vert,
177 GLboolean allocate,
178 GLboolean eot,
179 GLuint header);
180
181void brw_clip_kill_thread(struct brw_clip_compile *c);
182
183struct brw_reg brw_clip_plane_stride( struct brw_clip_compile *c );
184struct brw_reg brw_clip_plane0_address( struct brw_clip_compile *c );
185
186void brw_clip_copy_colors( struct brw_clip_compile *c,
187 GLuint to, GLuint from );
188
189void brw_clip_init_clipmask( struct brw_clip_compile *c );
190
191struct brw_reg get_tmp( struct brw_clip_compile *c );
192
193void brw_clip_project_position(struct brw_clip_compile *c,
194 struct brw_reg pos );
195void brw_clip_ff_sync(struct brw_clip_compile *c);
196void brw_clip_init_ff_sync(struct brw_clip_compile *c);
197#endif
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