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>
37 #include "intel_batchbuffer.h"
39 #include "brw_defines.h"
40 #include "brw_context.h"
44 #include "brw_state.h"
46 static void compile_sf_prog( struct brw_context
*brw
,
47 struct brw_sf_prog_key
*key
)
49 struct brw_sf_compile c
;
50 const GLuint
*program
;
54 memset(&c
, 0, sizeof(c
));
56 /* Begin the compilation:
58 brw_init_compile(brw
, &c
.func
);
61 c
.nr_attrs
= brw_count_bits(c
.key
.attrs
);
62 c
.nr_attr_regs
= (c
.nr_attrs
+1)/2;
63 c
.nr_setup_attrs
= brw_count_bits(c
.key
.attrs
& DO_SETUP_BITS
);
64 c
.nr_setup_regs
= (c
.nr_setup_attrs
+1)/2;
66 c
.prog_data
.urb_read_length
= c
.nr_attr_regs
;
67 c
.prog_data
.urb_entry_size
= c
.nr_setup_regs
* 2;
69 /* Construct map from attribute number to position in the vertex.
71 for (i
= idx
= 0; i
< VERT_RESULT_MAX
; i
++)
72 if (c
.key
.attrs
& (1<<i
)) {
73 c
.attr_to_idx
[i
] = idx
;
74 c
.idx_to_attr
[idx
] = i
;
75 if (i
>= VERT_RESULT_TEX0
&& i
<= VERT_RESULT_TEX7
) {
76 c
.point_attrs
[i
].CoordReplace
=
77 brw
->attribs
.Point
->CoordReplace
[i
- VERT_RESULT_TEX0
];
79 c
.point_attrs
[i
].CoordReplace
= GL_FALSE
;
83 /* Which primitive? Or all three?
85 switch (key
->primitive
) {
88 brw_emit_tri_setup( &c
, GL_TRUE
);
92 brw_emit_line_setup( &c
, GL_TRUE
);
96 if (key
->do_point_sprite
)
97 brw_emit_point_sprite_setup( &c
, GL_TRUE
);
99 brw_emit_point_setup( &c
, GL_TRUE
);
101 case SF_UNFILLED_TRIS
:
103 brw_emit_anyprim_setup( &c
);
113 program
= brw_get_program(&c
.func
, &program_size
);
117 dri_bo_unreference(brw
->sf
.prog_bo
);
118 brw
->sf
.prog_bo
= brw_upload_cache( &brw
->cache
, BRW_SF_PROG
,
119 &c
.key
, sizeof(c
.key
),
121 program
, program_size
,
123 &brw
->sf
.prog_data
);
126 /* Calculate interpolants for triangle and line rasterization.
128 static void upload_sf_prog(struct brw_context
*brw
)
130 struct brw_sf_prog_key key
;
132 memset(&key
, 0, sizeof(key
));
134 /* Populate the key, noting state dependencies:
136 /* CACHE_NEW_VS_PROG */
137 key
.attrs
= brw
->vs
.prog_data
->outputs_written
;
139 /* BRW_NEW_REDUCED_PRIMITIVE */
140 switch (brw
->intel
.reduced_primitive
) {
142 /* NOTE: We just use the edgeflag attribute as an indicator that
143 * unfilled triangles are active. We don't actually do the
144 * edgeflag testing here, it is already done in the clip
147 if (key
.attrs
& (1<<VERT_RESULT_EDGE
))
148 key
.primitive
= SF_UNFILLED_TRIS
;
150 key
.primitive
= SF_TRIANGLES
;
153 key
.primitive
= SF_LINES
;
156 key
.primitive
= SF_POINTS
;
160 key
.do_point_sprite
= brw
->attribs
.Point
->PointSprite
;
161 key
.SpriteOrigin
= brw
->attribs
.Point
->SpriteOrigin
;
163 key
.do_flat_shading
= (brw
->attribs
.Light
->ShadeModel
== GL_FLAT
);
164 key
.do_twoside_color
= (brw
->attribs
.Light
->Enabled
&& brw
->attribs
.Light
->Model
.TwoSide
);
167 if (key
.do_twoside_color
)
168 key
.frontface_ccw
= (brw
->attribs
.Polygon
->FrontFace
== GL_CCW
);
170 dri_bo_unreference(brw
->sf
.prog_bo
);
171 brw
->sf
.prog_bo
= brw_search_cache(&brw
->cache
, BRW_SF_PROG
,
175 if (brw
->sf
.prog_bo
== NULL
)
176 compile_sf_prog( brw
, &key
);
180 const struct brw_tracked_state brw_sf_prog
= {
182 .mesa
= (_NEW_LIGHT
|_NEW_POLYGON
|_NEW_POINT
),
183 .brw
= (BRW_NEW_REDUCED_PRIMITIVE
),
184 .cache
= CACHE_NEW_VS_PROG
186 .prepare
= upload_sf_prog