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>
33 #include "main/glheader.h"
34 #include "main/macros.h"
35 #include "main/enums.h"
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 intel_context
*intel
= &brw
->intel
;
50 struct brw_sf_compile c
;
51 const GLuint
*program
;
55 memset(&c
, 0, sizeof(c
));
57 /* Begin the compilation:
59 brw_init_compile(brw
, &c
.func
);
62 c
.nr_attrs
= brw_count_bits(c
.key
.attrs
);
63 c
.nr_attr_regs
= (c
.nr_attrs
+1)/2;
64 c
.nr_setup_attrs
= brw_count_bits(c
.key
.attrs
);
65 c
.nr_setup_regs
= (c
.nr_setup_attrs
+1)/2;
67 c
.prog_data
.urb_read_length
= c
.nr_attr_regs
;
68 c
.prog_data
.urb_entry_size
= c
.nr_setup_regs
* 2;
70 /* Construct map from attribute number to position in the vertex.
72 for (i
= idx
= 0; i
< VERT_RESULT_MAX
; i
++) {
73 if (c
.key
.attrs
& BITFIELD64_BIT(i
)) {
74 c
.attr_to_idx
[i
] = idx
;
75 c
.idx_to_attr
[idx
] = i
;
80 /* Which primitive? Or all three?
82 switch (key
->primitive
) {
85 brw_emit_tri_setup( &c
, GL_TRUE
);
89 brw_emit_line_setup( &c
, GL_TRUE
);
93 if (key
->do_point_sprite
)
94 brw_emit_point_sprite_setup( &c
, GL_TRUE
);
96 brw_emit_point_setup( &c
, GL_TRUE
);
98 case SF_UNFILLED_TRIS
:
100 brw_emit_anyprim_setup( &c
);
109 program
= brw_get_program(&c
.func
, &program_size
);
111 if (unlikely(INTEL_DEBUG
& DEBUG_SF
)) {
113 for (i
= 0; i
< program_size
/ sizeof(struct brw_instruction
); i
++)
114 brw_disasm(stdout
, &((struct brw_instruction
*)program
)[i
],
121 drm_intel_bo_unreference(brw
->sf
.prog_bo
);
122 brw
->sf
.prog_bo
= brw_upload_cache(&brw
->cache
, BRW_SF_PROG
,
123 &c
.key
, sizeof(c
.key
),
124 program
, program_size
,
125 &c
.prog_data
, sizeof(c
.prog_data
),
129 /* Calculate interpolants for triangle and line rasterization.
131 static void upload_sf_prog(struct brw_context
*brw
)
133 struct gl_context
*ctx
= &brw
->intel
.ctx
;
134 struct brw_sf_prog_key key
;
136 memset(&key
, 0, sizeof(key
));
138 /* Populate the key, noting state dependencies:
140 /* CACHE_NEW_VS_PROG */
141 key
.attrs
= brw
->vs
.prog_data
->outputs_written
;
143 /* BRW_NEW_REDUCED_PRIMITIVE */
144 switch (brw
->intel
.reduced_primitive
) {
146 /* NOTE: We just use the edgeflag attribute as an indicator that
147 * unfilled triangles are active. We don't actually do the
148 * edgeflag testing here, it is already done in the clip
151 if (key
.attrs
& BITFIELD64_BIT(VERT_RESULT_EDGE
))
152 key
.primitive
= SF_UNFILLED_TRIS
;
154 key
.primitive
= SF_TRIANGLES
;
157 key
.primitive
= SF_LINES
;
160 key
.primitive
= SF_POINTS
;
165 key
.do_point_sprite
= ctx
->Point
.PointSprite
;
166 if (key
.do_point_sprite
) {
169 for (i
= 0; i
< 8; i
++) {
170 if (ctx
->Point
.CoordReplace
[i
])
171 key
.point_sprite_coord_replace
|= (1 << i
);
174 key
.sprite_origin_lower_left
= (ctx
->Point
.SpriteOrigin
== GL_LOWER_LEFT
);
176 key
.do_flat_shading
= (ctx
->Light
.ShadeModel
== GL_FLAT
);
177 key
.do_twoside_color
= (ctx
->Light
.Enabled
&& ctx
->Light
.Model
.TwoSide
);
180 key
.linear_color
= (ctx
->Hint
.PerspectiveCorrection
== GL_FASTEST
);
183 if (key
.do_twoside_color
) {
184 /* If we're rendering to a FBO, we have to invert the polygon
185 * face orientation, just as we invert the viewport in
186 * sf_unit_create_from_key(). ctx->DrawBuffer->Name will be
187 * nonzero if we're rendering to such an FBO.
189 key
.frontface_ccw
= (ctx
->Polygon
.FrontFace
== GL_CCW
) ^ (ctx
->DrawBuffer
->Name
!= 0);
192 drm_intel_bo_unreference(brw
->sf
.prog_bo
);
193 brw
->sf
.prog_bo
= brw_search_cache(&brw
->cache
, BRW_SF_PROG
,
196 if (brw
->sf
.prog_bo
== NULL
)
197 compile_sf_prog( brw
, &key
);
201 const struct brw_tracked_state brw_sf_prog
= {
203 .mesa
= (_NEW_HINT
| _NEW_LIGHT
| _NEW_POLYGON
| _NEW_POINT
),
204 .brw
= (BRW_NEW_REDUCED_PRIMITIVE
),
205 .cache
= CACHE_NEW_VS_PROG
207 .prepare
= upload_sf_prog