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 #include "../glsl/ralloc.h"
48 static void compile_sf_prog( struct brw_context
*brw
,
49 struct brw_sf_prog_key
*key
)
51 struct intel_context
*intel
= &brw
->intel
;
52 struct brw_sf_compile c
;
53 const GLuint
*program
;
58 memset(&c
, 0, sizeof(c
));
60 mem_ctx
= ralloc_context(NULL
);
61 /* Begin the compilation:
63 brw_init_compile(brw
, &c
.func
, mem_ctx
);
66 c
.nr_attrs
= brw_count_bits(c
.key
.attrs
);
67 c
.nr_attr_regs
= (c
.nr_attrs
+1)/2;
68 c
.nr_setup_attrs
= brw_count_bits(c
.key
.attrs
);
69 c
.nr_setup_regs
= (c
.nr_setup_attrs
+1)/2;
71 c
.prog_data
.urb_read_length
= c
.nr_attr_regs
;
72 c
.prog_data
.urb_entry_size
= c
.nr_setup_regs
* 2;
74 /* Construct map from attribute number to position in the vertex.
76 for (i
= idx
= 0; i
< VERT_RESULT_MAX
; i
++) {
77 if (c
.key
.attrs
& BITFIELD64_BIT(i
)) {
78 c
.attr_to_idx
[i
] = idx
;
79 c
.idx_to_attr
[idx
] = i
;
84 /* Which primitive? Or all three?
86 switch (key
->primitive
) {
89 brw_emit_tri_setup( &c
, GL_TRUE
);
93 brw_emit_line_setup( &c
, GL_TRUE
);
97 if (key
->do_point_sprite
)
98 brw_emit_point_sprite_setup( &c
, GL_TRUE
);
100 brw_emit_point_setup( &c
, GL_TRUE
);
102 case SF_UNFILLED_TRIS
:
104 brw_emit_anyprim_setup( &c
);
113 program
= brw_get_program(&c
.func
, &program_size
);
115 if (unlikely(INTEL_DEBUG
& DEBUG_SF
)) {
117 for (i
= 0; i
< program_size
/ sizeof(struct brw_instruction
); i
++)
118 brw_disasm(stdout
, &((struct brw_instruction
*)program
)[i
],
125 drm_intel_bo_unreference(brw
->sf
.prog_bo
);
126 brw
->sf
.prog_bo
= brw_upload_cache(&brw
->cache
, BRW_SF_PROG
,
127 &c
.key
, sizeof(c
.key
),
128 program
, program_size
,
129 &c
.prog_data
, sizeof(c
.prog_data
),
131 ralloc_free(mem_ctx
);
134 /* Calculate interpolants for triangle and line rasterization.
136 static void upload_sf_prog(struct brw_context
*brw
)
138 struct gl_context
*ctx
= &brw
->intel
.ctx
;
139 struct brw_sf_prog_key key
;
141 memset(&key
, 0, sizeof(key
));
143 /* Populate the key, noting state dependencies:
145 /* CACHE_NEW_VS_PROG */
146 key
.attrs
= brw
->vs
.prog_data
->outputs_written
;
148 /* BRW_NEW_REDUCED_PRIMITIVE */
149 switch (brw
->intel
.reduced_primitive
) {
151 /* NOTE: We just use the edgeflag attribute as an indicator that
152 * unfilled triangles are active. We don't actually do the
153 * edgeflag testing here, it is already done in the clip
156 if (key
.attrs
& BITFIELD64_BIT(VERT_RESULT_EDGE
))
157 key
.primitive
= SF_UNFILLED_TRIS
;
159 key
.primitive
= SF_TRIANGLES
;
162 key
.primitive
= SF_LINES
;
165 key
.primitive
= SF_POINTS
;
170 key
.do_point_sprite
= ctx
->Point
.PointSprite
;
171 if (key
.do_point_sprite
) {
174 for (i
= 0; i
< 8; i
++) {
175 if (ctx
->Point
.CoordReplace
[i
])
176 key
.point_sprite_coord_replace
|= (1 << i
);
179 key
.sprite_origin_lower_left
= (ctx
->Point
.SpriteOrigin
== GL_LOWER_LEFT
);
181 key
.do_flat_shading
= (ctx
->Light
.ShadeModel
== GL_FLAT
);
182 key
.do_twoside_color
= (ctx
->Light
.Enabled
&& ctx
->Light
.Model
.TwoSide
);
185 if (key
.do_twoside_color
) {
186 /* If we're rendering to a FBO, we have to invert the polygon
187 * face orientation, just as we invert the viewport in
188 * sf_unit_create_from_key(). ctx->DrawBuffer->Name will be
189 * nonzero if we're rendering to such an FBO.
191 key
.frontface_ccw
= (ctx
->Polygon
.FrontFace
== GL_CCW
) ^ (ctx
->DrawBuffer
->Name
!= 0);
194 drm_intel_bo_unreference(brw
->sf
.prog_bo
);
195 brw
->sf
.prog_bo
= brw_search_cache(&brw
->cache
, BRW_SF_PROG
,
198 if (brw
->sf
.prog_bo
== NULL
)
199 compile_sf_prog( brw
, &key
);
203 const struct brw_tracked_state brw_sf_prog
= {
205 .mesa
= (_NEW_HINT
| _NEW_LIGHT
| _NEW_POLYGON
| _NEW_POINT
),
206 .brw
= (BRW_NEW_REDUCED_PRIMITIVE
),
207 .cache
= CACHE_NEW_VS_PROG
209 .prepare
= upload_sf_prog