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r300: improve precission of linear interpolation

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13554>
This commit is contained in:
Filip Gawin 2021-10-27 18:45:00 +02:00 • committed by Marge Bot
parent aa264ded94
commit 021ec93273
1 changed files with 3 additions and 3 deletions
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6
src/gallium/drivers/r300/compiler/radeon_program_alu.c
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@ -427,12 +427,12 @@ static void transform_LRP(struct radeon_compiler* c,
{
struct rc_dst_register dst = try_to_reuse_dst(c, inst);
emit2(c, inst->Prev, RC_OPCODE_ADD, 0,
emit3(c, inst->Prev, RC_OPCODE_MAD, 0,
dst,
inst->U.I.SrcReg[1], negate(inst->U.I.SrcReg[2]));
negate(inst->U.I.SrcReg[0]), inst->U.I.SrcReg[2], inst->U.I.SrcReg[2]);
emit3(c, inst->Prev, RC_OPCODE_MAD, &inst->U.I,
inst->U.I.DstReg,
inst->U.I.SrcReg[0], srcreg(RC_FILE_TEMPORARY, dst.Index), inst->U.I.SrcReg[2]);
inst->U.I.SrcReg[0], inst->U.I.SrcReg[1], srcreg(RC_FILE_TEMPORARY, dst.Index));
rc_remove_instruction(inst);
}