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/*
Copyright (C) Intel Corp. 2006. All Rights Reserved.
Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
develop this 3D driver.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice (including the
next paragraph) shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**********************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "brw_context.h"
#include "brw_vs.h"
#if 0
/* Component is active if it may diverge from [0,0,0,1]. Undef values
* are promoted to [0,0,0,1] for the purposes of this analysis.
*/
struct tracker {
boolean twoside;
ubyte active[PROGRAM_OUTPUT+1][128];
unsigned size_masks[4];
};
static void set_active_component( struct tracker *t,
unsigned file,
unsigned index,
ubyte active )
{
switch (file) {
case PROGRAM_TEMPORARY:
case PROGRAM_INPUT:
case PROGRAM_OUTPUT:
t->active[file][index] |= active;
default:
break;
}
}
static void set_active( struct tracker *t,
struct prog_dst_register dst,
unsigned active )
{
set_active_component( t, dst.File, dst.Index, active & dst.WriteMask );
}
static ubyte get_active_component( struct tracker *t,
unsigned file,
unsigned index,
unsigned component,
ubyte swz )
{
switch (swz) {
case SWIZZLE_ZERO:
return component < 3 ? 0 : (1<<component);
case SWIZZLE_ONE:
return component == 3 ? 0 : (1<<component);
default:
switch (file) {
case PROGRAM_TEMPORARY:
case PROGRAM_INPUT:
case PROGRAM_OUTPUT:
return t->active[file][index] & (1<<component);
default:
return 1 << component;
}
}
}
static ubyte get_active( struct tracker *t,
struct prog_src_register src )
{
unsigned i;
ubyte active = src.NegateBase; /* NOTE! */
if (src.RelAddr)
return 0xf;
for (i = 0; i < 4; i++)
active |= get_active_component(t, src.File, src.Index, i,
GET_SWZ(src.Swizzle, i));
return active;
}
static ubyte get_output_size( struct tracker *t,
unsigned idx )
{
ubyte active = t->active[PROGRAM_OUTPUT][idx];
if (active & (1<<3)) return 4;
if (active & (1<<2)) return 3;
if (active & (1<<1)) return 2;
if (active & (1<<0)) return 1;
return 0;
}
/* Note the potential copying that occurs in the setup program:
*/
static void calc_sizes( struct tracker *t )
{
unsigned i;
if (t->twoside) {
t->active[PROGRAM_OUTPUT][VERT_RESULT_COL0] |=
t->active[PROGRAM_OUTPUT][VERT_RESULT_BFC0];
t->active[PROGRAM_OUTPUT][VERT_RESULT_COL1] |=
t->active[PROGRAM_OUTPUT][VERT_RESULT_BFC1];
}
for (i = 0; i < FRAG_ATTRIB_MAX; i++) {
switch (get_output_size(t, i)) {
case 4: t->size_masks[4-1] |= 1<<i;
case 3: t->size_masks[3-1] |= 1<<i;
case 2: t->size_masks[2-1] |= 1<<i;
case 1: t->size_masks[1-1] |= 1<<i;
break;
}
}
}
static ubyte szflag[4+1] = {
0,
0x1,
0x3,
0x7,
0xf
};
/* Pull a size out of the packed array:
*/
static unsigned get_input_size(struct brw_context *brw,
unsigned attr)
{
unsigned sizes_dword = brw->vb.info.sizes[attr/16];
unsigned sizes_bits = (sizes_dword>>((attr%16)*2)) & 0x3;
return sizes_bits + 1;
/* return brw->vb.inputs[attr].glarray->Size; */
}
/* Calculate sizes of vertex program outputs. Size is the largest
* component index which might vary from [0,0,0,1]
*/
static void calc_wm_input_sizes( struct brw_context *brw )
{
/* BRW_NEW_VERTEX_PROGRAM */
struct brw_vertex_program *vp =
(struct brw_vertex_program *)brw->vertex_program;
/* BRW_NEW_INPUT_DIMENSIONS */
struct tracker t;
unsigned insn;
unsigned i;
memset(&t, 0, sizeof(t));
/* _NEW_LIGHT */
if (brw->attribs.Light->Model.TwoSide)
t.twoside = 1;
for (i = 0; i < PIPE_ATTRIB_MAX; i++)
if (vp->program.Base.InputsRead & (1<<i))
set_active_component(&t, PROGRAM_INPUT, i,
szflag[get_input_size(brw, i)]);
for (insn = 0; insn < vp->program.Base.NumInstructions; insn++) {
struct prog_instruction *inst = &vp->program.Base.Instructions[insn];
switch (inst->Opcode) {
case OPCODE_ARL:
break;
case OPCODE_MOV:
set_active(&t, inst->DstReg, get_active(&t, inst->SrcReg[0]));
break;
default:
set_active(&t, inst->DstReg, 0xf);
break;
}
}
calc_sizes(&t);
if (memcmp(brw->wm.input_size_masks, t.size_masks, sizeof(t.size_masks)) != 0) {
memcpy(brw->wm.input_size_masks, t.size_masks, sizeof(t.size_masks));
brw->state.dirty.brw |= BRW_NEW_WM_INPUT_DIMENSIONS;
}
}
const struct brw_tracked_state brw_wm_input_sizes = {
.dirty = {
.mesa = _NEW_LIGHT,
.brw = BRW_NEW_VERTEX_PROGRAM | BRW_NEW_INPUT_DIMENSIONS,
.cache = 0
},
.update = calc_wm_input_sizes
};
#endif
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