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authorXiang, Haihao <haihao.xiang@intel.com>2007-03-11 22:41:26 +0800
committerXiang, Haihao <haihao.xiang@intel.com>2007-03-11 22:41:26 +0800
commit61ec23cc63a040a2edf1bc466917e85362514c89 (patch)
treeca11ecd261acbc4375145c118dd18a6898f6378f /src/mesa/drivers
parent69e57cf6ae0af823e903926bafa8daa46b11352c (diff)
fix for bug#10196
Compute half if LOCAL_VIEWER is enabled and the light is a directional source.
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vs_tnl.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_tnl.c b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
index 0d61092247..c05a9b5ea1 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_tnl.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
@@ -988,7 +988,14 @@ static void build_lighting( struct tnl_program *p )
*/
VPpli = register_param3(p, STATE_LIGHT, i,
STATE_POSITION_NORMALIZED);
- half = register_param3(p, STATE_LIGHT, i, STATE_HALF);
+ if (p->state->light_local_viewer) {
+ struct ureg eye_hat = get_eye_position_normalized(p);
+ half = get_temp(p);
+ emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
+ emit_normalize_vec3(p, half, half);
+ } else {
+ half = register_param3(p, STATE_LIGHT, i, STATE_HALF);
+ }
}
else {
struct ureg Ppli = register_param3(p, STATE_LIGHT, i,