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authorRoland Scheidegger <[email protected]>2007-03-13 19:04:28 +0100
committerRoland Scheidegger <[email protected]>2007-03-13 19:04:28 +0100
commita6cc9ab493a2efa9a0ea91cddba0e85c8c8c83f1 (patch)
tree159d709b3354a19fd9885842d0565398edc44d59 /src/mesa/drivers
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/drivers')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vs_tnl.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_tnl.c b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
index c05a9b5ea10..e22a26b2917 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_tnl.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
@@ -850,14 +850,13 @@ static struct ureg calculate_light_attenuation( struct tnl_program *p,
/* Calculate spot attenuation:
*/
if (!p->state->unit[i].light_spotcutoff_is_180) {
- struct ureg spot_dir = register_param3(p, STATE_LIGHT, i,
- STATE_SPOT_DIRECTION);
+ struct ureg spot_dir_norm = register_param3(p, STATE_INTERNAL,
+ STATE_SPOT_DIR_NORMALIZED, i);
struct ureg spot = get_temp(p);
struct ureg slt = get_temp(p);
-
- emit_normalize_vec3( p, spot, spot_dir ); /* XXX: precompute! */
- emit_op2(p, OPCODE_DP3, spot, 0, ureg_negate(VPpli), spot);
- emit_op2(p, OPCODE_SLT, slt, 0, swizzle1(spot_dir,W), spot);
+
+ emit_op2(p, OPCODE_DP3, spot, 0, ureg_negate(VPpli), spot_dir_norm);
+ emit_op2(p, OPCODE_SLT, slt, 0, swizzle1(spot_dir_norm,W), spot);
emit_op2(p, OPCODE_POW, spot, 0, spot, swizzle1(attenuation, W));
emit_op2(p, OPCODE_MUL, att, 0, slt, spot);
@@ -1166,7 +1165,8 @@ static void build_fog( struct tnl_program *p )
if (p->state->fog_option &&
p->state->tnl_do_vertex_fog) {
- struct ureg params = register_param1(p, STATE_FOG_PARAMS);
+ struct ureg params = register_param2(p, STATE_INTERNAL,
+ STATE_FOG_PARAMS_OPTIMIZED);
struct ureg tmp = get_temp(p);
struct ureg id = get_identity_param(p);
@@ -1174,8 +1174,7 @@ static void build_fog( struct tnl_program *p )
switch (p->state->fog_option) {
case FOG_LINEAR: {
- emit_op1(p, OPCODE_ABS, tmp, 0, input);
- emit_op2(p, OPCODE_SUB, tmp, 0, swizzle1(params,Z), tmp);
+ emit_op3(p, OPCODE_MAD, tmp, 0, input, swizzle1(params,X), swizzle1(params,Y));
emit_op2(p, OPCODE_MUL, tmp, 0, tmp, swizzle1(params,W));
emit_op2(p, OPCODE_MAX, tmp, 0, tmp, swizzle1(id,X)); /* saturate */
emit_op2(p, OPCODE_MIN, fog, WRITEMASK_X, tmp, swizzle1(id,W));
@@ -1183,15 +1182,13 @@ static void build_fog( struct tnl_program *p )
}
case FOG_EXP:
emit_op1(p, OPCODE_ABS, tmp, 0, input);
- emit_op2(p, OPCODE_MUL, tmp, 0, tmp, swizzle1(params,X));
- emit_op2(p, OPCODE_POW, fog, WRITEMASK_X,
- register_const1f(p, M_E), ureg_negate(tmp));
+ emit_op2(p, OPCODE_MUL, tmp, 0, tmp, swizzle1(params,Z));
+ emit_op1(p, OPCODE_EX2, fog, WRITEMASK_X, ureg_negate(tmp));
break;
case FOG_EXP2:
- emit_op2(p, OPCODE_MUL, tmp, 0, input, swizzle1(params,X));
+ emit_op2(p, OPCODE_MUL, tmp, 0, input, swizzle1(params,W));
emit_op2(p, OPCODE_MUL, tmp, 0, tmp, tmp);
- emit_op2(p, OPCODE_POW, fog, WRITEMASK_X,
- register_const1f(p, M_E), ureg_negate(tmp));
+ emit_op1(p, OPCODE_EX2, fog, WRITEMASK_X, ureg_negate(tmp));
break;
}