From c2bf23b8372607a5507a44ea3654c8af1083529a Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Fri, 14 Mar 2008 17:47:11 -0600 Subject: mesa: clamp point size in vertex program when computing attenuated size --- src/mesa/main/ffvertex_prog.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/main/ffvertex_prog.c b/src/mesa/main/ffvertex_prog.c index 04ece4cda8..f648d081c0 100644 --- a/src/mesa/main/ffvertex_prog.c +++ b/src/mesa/main/ffvertex_prog.c @@ -1398,12 +1398,13 @@ static void build_pointsize( struct tnl_program *p ) /* 1 / sqrt(factor) */ emit_op1(p, OPCODE_RSQ, ut, WRITEMASK_X, ut ); -#if 1 +#if 0 /* out = pointSize / sqrt(factor) */ emit_op2(p, OPCODE_MUL, out, WRITEMASK_X, ut, state_size); #else - /* not sure, might make sense to do clamping here, - but it's not done in t_vb_points neither */ + /* this is a good place to clamp the point size since there's likely + * no hardware registers to clamp point size at rasterization time. + */ emit_op2(p, OPCODE_MUL, ut, WRITEMASK_X, ut, state_size); emit_op2(p, OPCODE_MAX, ut, WRITEMASK_X, ut, swizzle1(state_size, Y)); emit_op2(p, OPCODE_MIN, out, WRITEMASK_X, ut, swizzle1(state_size, Z)); -- cgit v1.2.3