fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-02 01:28:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

mesa: further degenerate the special case lit substitute

Browse source
This commit is contained in:
Keith Whitwell 2008-05-23 20:05:36 +01:00
parent 333d377bbd
commit e841b92d9c
1 changed files with 12 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
src/mesa/main/ffvertex_prog.c
View file

@ -953,19 +953,19 @@ static void emit_degenerate_lit( struct tnl_program *p,
{
struct ureg id = get_identity_param(p);
/* 1, 0, 0, 1
/* Note that result.x & result.w will not be examined. Note also that
* dots.xyzw == dots.xxxx.
*/
emit_op1(p, OPCODE_MOV, lit, 0, swizzle(id, Z, X, X, Z));
/* 1, MAX2(in[0], 0), 0, 1
/* result[1] = MAX2(in, 0)
*/
emit_op2(p, OPCODE_MAX, lit, WRITEMASK_Y, lit, swizzle1(dots, X));
emit_op2(p, OPCODE_MAX, lit, 0, id, dots);
/* 1, MAX2(in[0], 0), (in[0] > 0 ? 1 : 0), 1
/* result[2] = (in > 0 ? 1 : 0)
*/
emit_op2(p, OPCODE_SLT, lit, WRITEMASK_Z,
lit, /* 0 */
swizzle1(dots, X)); /* in[0] */
dots); /* in[0] */
}
@ -1122,10 +1122,13 @@ static void build_lighting( struct tnl_program *p )
/* Calculate dot products:
*/
emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli);
if (!p->state->material_shininess_is_zero)
if (p->state->material_shininess_is_zero) {
emit_op2(p, OPCODE_DP3, dots, 0, normal, VPpli);
}
else {
emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli);
emit_op2(p, OPCODE_DP3, dots, WRITEMASK_Y, normal, half);
}
/* Front face lighting:
*/