diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-03-14 17:47:11 -0600 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-03-14 17:47:11 -0600 |
| commit | c2bf23b8372607a5507a44ea3654c8af1083529a (patch) | |
| tree | 408a016aedabd1a31fea302854ab6ed1aebcebdc /src/mesa | |
| parent | cbf42c45a15d6a132c7f7d4946c422ee3de35e6c (diff) | |
mesa: clamp point size in vertex program when computing attenuated size
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/ffvertex_prog.c | 7 |
1 files changed, 4 insertions, 3 deletions
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)); |