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authorRoland Scheidegger <sroland@tungstengraphics.com>2007-03-13 19:04:28 +0100
committerRoland Scheidegger <sroland@tungstengraphics.com>2007-03-13 19:04:28 +0100
commita6cc9ab493a2efa9a0ea91cddba0e85c8c8c83f1 (patch)
tree159d709b3354a19fd9885842d0565398edc44d59 /src/mesa/tnl
parent37e6f760fde506728077c6e8b48bb8c34d53dfd3 (diff)
sync up t_vp_build.c brw_vs_tnl.c a bit
Bring over the optimizations for fog and normalized spot dir from t_vp_build.c to brw_vs_tnl.c. Likewise, port a fix for point size calc from brw_vs_tnl.c to t_vp_build.c (use ABS(eyez) instead of -eyez). Leave the now differing point size calcs alone though, not sure what's better (it's basically MOV, ABS, MUL, DP3 vs. ABS, MAD, MAD).
Diffstat (limited to 'src/mesa/tnl')
-rw-r--r--src/mesa/tnl/t_vp_build.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/src/mesa/tnl/t_vp_build.c b/src/mesa/tnl/t_vp_build.c
index 2a97a1c8c7..2663d99304 100644
--- a/src/mesa/tnl/t_vp_build.c
+++ b/src/mesa/tnl/t_vp_build.c
@@ -1329,14 +1329,16 @@ static void build_pointsize( struct tnl_program *p )
struct ureg out = register_output(p, VERT_RESULT_PSIZ);
struct ureg ut = get_temp(p);
+ /* dist = |eyez| */
+ emit_op1(p, OPCODE_ABS, ut, WRITEMASK_Y, swizzle1(eye, Z));
/* p1 + dist * (p2 + dist * p3); */
- emit_op3(p, OPCODE_MAD, ut, 0, negate(swizzle1(eye, Z)),
+ emit_op3(p, OPCODE_MAD, ut, WRITEMASK_X, swizzle1(ut, Y),
swizzle1(state_attenuation, Z), swizzle1(state_attenuation, Y));
- emit_op3(p, OPCODE_MAD, ut, 0, negate(swizzle1(eye, Z)),
+ emit_op3(p, OPCODE_MAD, ut, WRITEMASK_X, swizzle1(ut, Y),
ut, swizzle1(state_attenuation, X));
/* 1 / sqrt(factor) */
- emit_op1(p, OPCODE_RSQ, ut, 0, ut );
+ emit_op1(p, OPCODE_RSQ, ut, WRITEMASK_X, ut );
#if 1
/* out = pointSize / sqrt(factor) */
@@ -1344,8 +1346,8 @@ static void build_pointsize( struct tnl_program *p )
#else
/* not sure, might make sense to do clamping here,
but it's not done in t_vb_points neither */
- emit_op2(p, OPCODE_MUL, ut, 0, ut, state_size);
- emit_op2(p, OPCODE_MAX, ut, 0, ut, swizzle1(state_size, Y));
+ 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));
#endif