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Add sin instruction to fragment program.

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There is a bug somewhere in fragment program.
tri-cos and tri-sin show the bug. Also we
should not emit multiple time the same constant.
for sin,cos,lit have to fix that.
This commit is contained in:
Jerome Glisse 2006-11-05 00:47:27 +00:00
parent 0056ea5417
commit e330a69ee5
1 changed files with 64 additions and 2 deletions
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66
src/mesa/drivers/dri/r300/r300_fragprog.c
View file

@ -1063,7 +1063,6 @@ static GLboolean parse_program(struct r300_fragment_program *rp)
* cos using taylor serie:
* cos(x) = 1 - x^2/2! + x^4/4! - x^6/6!
*/
// printf("swz %d\n", src[0].v_swz);
temp = get_temp_reg(rp);
cnstv[0] = 0.5;
cnstv[1] = 0.041666667;
@ -1374,7 +1373,70 @@ static GLboolean parse_program(struct r300_fragment_program *rp)
free_temp(rp, temp);
break;
case OPCODE_SIN:
ERROR("SIN not implemented\n");
/*
* sin using taylor serie:
* sin(x) = x - x^3/3! + x^5/5! - x^7/7!
*/
temp = get_temp_reg(rp);
cnstv[0] = 0.333333333;
cnstv[1] = 0.008333333;
cnstv[2] = 0.000198413;
cnstv[4] = 0.0;
cnst = emit_const4fv(rp, cnstv);
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
src[0],
src[0],
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Y | WRITEMASK_Z,
temp, temp,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Z,
temp,
swizzle(temp, X, X, X, W),
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
src[0],
temp,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
temp, cnst,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
src[0],
pfs_one,
negate(temp),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
swizzle(temp, Y, Y, Y, W),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
negate(swizzle(temp, Z, Z, Z, W)),
flags);
emit_arith(rp, PFS_OP_MAD, dest, mask,
swizzle(temp, X, X, X, X),
pfs_one,
pfs_zero,
flags);
free_temp(rp, temp);
break;
case OPCODE_SLT:
src[0] = t_src(rp, fpi->SrcReg[0]);