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* Do not use control flow in GLSL version 1.0 in Lighting.frag

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8170 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
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sha..rd 2011-09-04 06:08:48 +00:00
parent f6322b28ec
commit dd7495185c
1 changed files with 17 additions and 9 deletions
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10
engine/src/core-data/Common/MatDefs/Light/Lighting.frag
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@ -174,16 +174,21 @@ void main(){
#ifndef VERTEX_LIGHTING #ifndef VERTEX_LIGHTING
float spotFallOff = 1.0; float spotFallOff = 1.0;
#if __VERSION__ >= 110
// allow use of control flow
if(g_LightDirection.w != 0.0){ if(g_LightDirection.w != 0.0){
#endif
vec3 L = normalize(lightVec.xyz); vec3 L = normalize(lightVec.xyz);
vec3 spotdir = normalize(g_LightDirection.xyz); vec3 spotdir = normalize(g_LightDirection.xyz);
float curAngleCos = dot(-L, spotdir); float curAngleCos = dot(-L, spotdir);
float innerAngleCos = floor(g_LightDirection.w) * 0.001; float innerAngleCos = floor(g_LightDirection.w) * 0.001;
float outerAngleCos = fract(g_LightDirection.w); float outerAngleCos = fract(g_LightDirection.w);
float innerMinusOuter = innerAngleCos - outerAngleCos; float innerMinusOuter = innerAngleCos - outerAngleCos;
spotFallOff = (curAngleCos - outerAngleCos) / innerMinusOuter; spotFallOff = (curAngleCos - outerAngleCos) / innerMinusOuter;
#if __VERSION__ >= 110
if(spotFallOff <= 0.0){ if(spotFallOff <= 0.0){
gl_FragColor.rgb = AmbientSum * diffuseColor.rgb; gl_FragColor.rgb = AmbientSum * diffuseColor.rgb;
gl_FragColor.a = alpha; gl_FragColor.a = alpha;
@ -192,6 +197,9 @@ void main(){
spotFallOff = clamp(spotFallOff, 0.0, 1.0); spotFallOff = clamp(spotFallOff, 0.0, 1.0);
} }
} }
#else
spotFallOff = clamp(spotFallOff, step(g_LightDirection.w, 0.001), 1.0);
#endif
#endif #endif
// *********************** // ***********************