2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
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:
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.
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.
26 **********************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
35 #include "pipe/p_state.h"
39 #define MAX_VERTS (3+6+6)
41 /* Note that if unfilled primitives are being emitted, we have to fix
42 * up polygon offset and flatshading at this point:
44 struct brw_clip_prog_key
{
48 GLuint do_flat_shading
:1;
50 GLuint fill_cw
:2; /* includes cull information */
51 GLuint fill_ccw
:2; /* includes cull information */
55 GLuint copy_bfc_ccw
:1;
57 GLuint output_hpos
:6; /* not always zero? */
59 GLuint output_color0
:6;
60 GLuint output_color1
:6;
63 GLuint output_edgeflag
:6;
66 GLfloat offset_factor
;
70 struct brw_clip_prog_data
{
71 GLuint curb_read_length
; /* user planes? */
73 GLuint urb_read_length
;
83 #define PRIM_MASK (0x1f)
85 struct brw_clip_compile
{
86 struct brw_compile func
;
87 struct brw_clip_prog_key key
;
88 struct brw_clip_prog_data prog_data
;
92 struct brw_reg vertex
[MAX_VERTS
];
95 struct brw_reg t0
, t1
;
96 struct brw_reg dp0
, dp1
;
98 struct brw_reg dpPrev
;
100 struct brw_reg loopcount
;
101 struct brw_reg nr_verts
;
102 struct brw_reg planemask
;
104 struct brw_reg inlist
;
105 struct brw_reg outlist
;
106 struct brw_reg freelist
;
109 struct brw_reg tmp0
, tmp1
;
110 struct brw_reg offset
;
112 struct brw_reg fixed_planes
;
113 struct brw_reg plane_equation
;
115 struct brw_reg ff_sync
;
118 /* 3 different ways of expressing vertex size, including
127 GLboolean need_direction
;
131 GLuint header_position_offset
;
133 GLuint nr_color_attrs
;
134 GLuint offset_color0
;
135 GLuint offset_color1
;
140 GLuint offset_edgeflag
;
143 #define ATTR_SIZE (4*4)
145 /* Points are only culled, so no need for a clip routine, however it
146 * works out easier to have a dummy one.
148 void brw_emit_unfilled_clip( struct brw_clip_compile
*c
);
149 void brw_emit_tri_clip( struct brw_clip_compile
*c
);
150 void brw_emit_line_clip( struct brw_clip_compile
*c
);
151 void brw_emit_point_clip( struct brw_clip_compile
*c
);
153 /* brw_clip_tri.c, for use by the unfilled clip routine:
155 void brw_clip_tri_init_vertices( struct brw_clip_compile
*c
);
156 void brw_clip_tri_flat_shade( struct brw_clip_compile
*c
);
157 void brw_clip_tri( struct brw_clip_compile
*c
);
158 void brw_clip_tri_emit_polygon( struct brw_clip_compile
*c
);
159 void brw_clip_tri_alloc_regs( struct brw_clip_compile
*c
,
166 void 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 */
171 GLboolean force_edgeflag
);
173 void brw_clip_init_planes( struct brw_clip_compile
*c
);
175 void brw_clip_emit_vue(struct brw_clip_compile
*c
,
176 struct brw_indirect vert
,
181 void brw_clip_kill_thread(struct brw_clip_compile
*c
);
183 struct brw_reg
brw_clip_plane_stride( struct brw_clip_compile
*c
);
184 struct brw_reg
brw_clip_plane0_address( struct brw_clip_compile
*c
);
186 void brw_clip_copy_colors( struct brw_clip_compile
*c
,
187 GLuint to
, GLuint from
);
189 void brw_clip_init_clipmask( struct brw_clip_compile
*c
);
191 struct brw_reg
get_tmp( struct brw_clip_compile
*c
);
193 void brw_clip_project_position(struct brw_clip_compile
*c
,
194 struct brw_reg pos
);
195 void brw_clip_ff_sync(struct brw_clip_compile
*c
);
196 void brw_clip_init_ff_sync(struct brw_clip_compile
*c
);