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/macros.h"
34 #include "brw_context.h"
37 /* Component is active if it may diverge from [0,0,0,1]. Undef values
38 * are promoted to [0,0,0,1] for the purposes of this analysis.
42 GLubyte active
[PROGRAM_OUTPUT
+1][128];
47 static void set_active_component( struct tracker
*t
,
53 case PROGRAM_TEMPORARY
:
56 t
->active
[file
][index
] |= active
;
63 static void set_active( struct tracker
*t
,
64 struct prog_dst_register dst
,
67 set_active_component( t
, dst
.File
, dst
.Index
, active
& dst
.WriteMask
);
71 static GLubyte
get_active_component( struct tracker
*t
,
79 return component
< 3 ? 0 : (1<<component
);
81 return component
== 3 ? 0 : (1<<component
);
84 case PROGRAM_TEMPORARY
:
87 return t
->active
[file
][index
] & (1<<component
);
89 return 1 << component
;
95 static GLubyte
get_active( struct tracker
*t
,
96 struct prog_src_register src
)
99 GLubyte active
= src
.NegateBase
; /* NOTE! */
104 for (i
= 0; i
< 4; i
++)
105 active
|= get_active_component(t
, src
.File
, src
.Index
, i
,
106 GET_SWZ(src
.Swizzle
, i
));
111 static GLubyte
get_output_size( struct tracker
*t
,
114 GLubyte active
= t
->active
[PROGRAM_OUTPUT
][idx
];
115 if (active
& (1<<3)) return 4;
116 if (active
& (1<<2)) return 3;
117 if (active
& (1<<1)) return 2;
118 if (active
& (1<<0)) return 1;
122 /* Note the potential copying that occurs in the setup program:
124 static void calc_sizes( struct tracker
*t
)
129 t
->active
[PROGRAM_OUTPUT
][VERT_RESULT_COL0
] |=
130 t
->active
[PROGRAM_OUTPUT
][VERT_RESULT_BFC0
];
132 t
->active
[PROGRAM_OUTPUT
][VERT_RESULT_COL1
] |=
133 t
->active
[PROGRAM_OUTPUT
][VERT_RESULT_BFC1
];
136 for (i
= 0; i
< FRAG_ATTRIB_MAX
; i
++) {
137 switch (get_output_size(t
, i
)) {
138 case 4: t
->size_masks
[4-1] |= 1<<i
;
139 case 3: t
->size_masks
[3-1] |= 1<<i
;
140 case 2: t
->size_masks
[2-1] |= 1<<i
;
141 case 1: t
->size_masks
[1-1] |= 1<<i
;
147 static GLubyte szflag
[4+1] = {
155 /* Pull a size out of the packed array:
157 static GLuint
get_input_size(struct brw_context
*brw
,
160 GLuint sizes_dword
= brw
->vb
.info
.sizes
[attr
/16];
161 GLuint sizes_bits
= (sizes_dword
>>((attr
%16)*2)) & 0x3;
162 return sizes_bits
+ 1;
163 /* return brw->vb.inputs[attr].glarray->Size; */
166 /* Calculate sizes of vertex program outputs. Size is the largest
167 * component index which might vary from [0,0,0,1]
169 static void calc_wm_input_sizes( struct brw_context
*brw
)
171 /* BRW_NEW_VERTEX_PROGRAM */
172 struct brw_vertex_program
*vp
=
173 (struct brw_vertex_program
*)brw
->vertex_program
;
174 /* BRW_NEW_INPUT_DIMENSIONS */
179 memset(&t
, 0, sizeof(t
));
182 if (brw
->attribs
.Light
->Model
.TwoSide
)
185 for (i
= 0; i
< VERT_ATTRIB_MAX
; i
++)
186 if (vp
->program
.Base
.InputsRead
& (1<<i
))
187 set_active_component(&t
, PROGRAM_INPUT
, i
,
188 szflag
[get_input_size(brw
, i
)]);
190 for (insn
= 0; insn
< vp
->program
.Base
.NumInstructions
; insn
++) {
191 struct prog_instruction
*inst
= &vp
->program
.Base
.Instructions
[insn
];
193 switch (inst
->Opcode
) {
198 set_active(&t
, inst
->DstReg
, get_active(&t
, inst
->SrcReg
[0]));
202 set_active(&t
, inst
->DstReg
, 0xf);
209 if (memcmp(brw
->wm
.input_size_masks
, t
.size_masks
, sizeof(t
.size_masks
)) != 0) {
210 memcpy(brw
->wm
.input_size_masks
, t
.size_masks
, sizeof(t
.size_masks
));
211 brw
->state
.dirty
.brw
|= BRW_NEW_WM_INPUT_DIMENSIONS
;
215 const struct brw_tracked_state brw_wm_input_sizes
= {
218 .brw
= BRW_NEW_VERTEX_PROGRAM
| BRW_NEW_INPUT_DIMENSIONS
,
221 .prepare
= calc_wm_input_sizes