2 * Copyright © 2009 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Eric Anholt <eric@anholt.net>
28 #include "brw_context.h"
29 #include "brw_state.h"
30 #include "brw_defines.h"
32 #include "main/macros.h"
33 #include "intel_batchbuffer.h"
36 get_attr_override(struct brw_context
*brw
, int attr
)
38 uint32_t attr_override
;
39 int attr_index
= 0, i
;
41 /* Find the source index (0 = first attribute after the 4D position)
42 * for this output attribute. attr is currently a VERT_RESULT_* but should
45 for (i
= 0; i
< attr
; i
++) {
46 if (brw
->vs
.prog_data
->outputs_written
& BITFIELD64_BIT(i
))
49 attr_override
= attr_index
;
55 upload_sf_state(struct brw_context
*brw
)
57 struct intel_context
*intel
= &brw
->intel
;
58 GLcontext
*ctx
= &intel
->ctx
;
59 /* CACHE_NEW_VS_PROG */
60 uint32_t num_inputs
= brw_count_bits(brw
->vs
.prog_data
->outputs_written
);
61 /* This should probably be FS inputs read */
62 uint32_t num_outputs
= brw_count_bits(brw
->vs
.prog_data
->outputs_written
);
63 uint32_t dw1
, dw2
, dw3
, dw4
;
66 GLboolean render_to_fbo
= brw
->intel
.ctx
.DrawBuffer
->Name
!= 0;
70 num_outputs
<< GEN6_SF_NUM_OUTPUTS_SHIFT
|
71 (num_inputs
+ 1) / 2 << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT
|
72 1 << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT
;
73 dw2
= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE
|
74 GEN6_SF_STATISTICS_ENABLE
;
79 if ((ctx
->Polygon
.FrontFace
== GL_CCW
) ^ render_to_fbo
)
80 dw2
|= GEN6_SF_WINDING_CCW
;
83 if (ctx
->Scissor
.Enabled
)
84 dw3
|= GEN6_SF_SCISSOR_ENABLE
;
87 if (ctx
->Polygon
.CullFlag
) {
88 switch (ctx
->Polygon
.CullFaceMode
) {
90 dw3
|= GEN6_SF_CULL_FRONT
;
93 dw3
|= GEN6_SF_CULL_BACK
;
95 case GL_FRONT_AND_BACK
:
96 dw3
|= GEN6_SF_CULL_BOTH
;
103 dw3
|= GEN6_SF_CULL_NONE
;
107 dw3
|= U_FIXED(CLAMP(ctx
->Line
.Width
, 0.0, 7.99), 7) <<
108 GEN6_SF_LINE_WIDTH_SHIFT
;
109 if (ctx
->Line
.SmoothFlag
) {
110 dw3
|= GEN6_SF_LINE_AA_ENABLE
;
111 dw3
|= GEN6_SF_LINE_AA_MODE_TRUE
;
112 dw3
|= GEN6_SF_LINE_END_CAP_WIDTH_1_0
;
116 if (ctx
->Point
._Attenuated
)
117 dw4
|= GEN6_SF_USE_STATE_POINT_WIDTH
;
119 dw4
|= U_FIXED(CLAMP(ctx
->Point
.Size
, 0.125, 225.875), 3) <<
120 GEN6_SF_POINT_WIDTH_SHIFT
;
122 dw1
|= GEN6_SF_POINT_SPRITE_LOWERLEFT
;
125 if (ctx
->Light
.ProvokingVertex
!= GL_FIRST_VERTEX_CONVENTION
) {
127 (2 << GEN6_SF_TRI_PROVOKE_SHIFT
) |
128 (2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT
) |
129 (1 << GEN6_SF_LINE_PROVOKE_SHIFT
);
132 (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT
);
136 OUT_BATCH(CMD_3D_SF_STATE
<< 16 | (20 - 2));
141 OUT_BATCH_F(ctx
->Polygon
.OffsetUnits
* 2); /* constant. copied from gen4 */
142 OUT_BATCH_F(ctx
->Polygon
.OffsetFactor
); /* scale */
143 OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */
144 for (i
= 0; i
< 8; i
++) {
145 uint32_t attr_overrides
= 0;
147 /* These should be generating FS inputs read instead of VS
150 for (; attr
< 64; attr
++) {
151 if (brw
->vs
.prog_data
->outputs_written
& BITFIELD64_BIT(attr
)) {
152 attr_overrides
|= get_attr_override(brw
, attr
);
158 for (; attr
< 64; attr
++) {
159 if (brw
->vs
.prog_data
->outputs_written
& BITFIELD64_BIT(attr
)) {
160 attr_overrides
|= get_attr_override(brw
, attr
) << 16;
165 OUT_BATCH(attr_overrides
);
167 OUT_BATCH(0); /* point sprite texcoord bitmask */
168 OUT_BATCH(0); /* constant interp bitmask */
169 OUT_BATCH(0); /* wrapshortest enables 0-7 */
170 OUT_BATCH(0); /* wrapshortest enables 8-15 */
173 intel_batchbuffer_emit_mi_flush(intel
->batch
);
176 const struct brw_tracked_state gen6_sf_state
= {
178 .mesa
= (_NEW_LIGHT
|
183 .brw
= BRW_NEW_CONTEXT
,
184 .cache
= CACHE_NEW_VS_PROG
186 .emit
= upload_sf_state
,