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Fix specular.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4058 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2012-07-05 13:09:44 +00:00
parent a88b2274c7
commit 180432523d
1 changed files with 16 additions and 9 deletions
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25
engine/shaders/glsl/rtlight.glsl
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@ -36,13 +36,13 @@ void main ()
gl_Position = skeletaltransform_wnst(w,n,s,t); gl_Position = skeletaltransform_wnst(w,n,s,t);
tcbase = v_texcoord; //pass the texture coords straight through tcbase = v_texcoord; //pass the texture coords straight through
vec3 lightminusvertex = l_lightposition - w.xyz; vec3 lightminusvertex = l_lightposition - w.xyz;
lightvector.x = dot(lightminusvertex, s.xyz); lightvector.x = -dot(lightminusvertex, s.xyz);
lightvector.y = dot(lightminusvertex, t.xyz); lightvector.y = dot(lightminusvertex, t.xyz);
lightvector.z = dot(lightminusvertex, n.xyz); lightvector.z = dot(lightminusvertex, n.xyz);
#if defined(SPECULAR)||defined(OFFSETMAPPING) #if defined(SPECULAR)||defined(OFFSETMAPPING)
vec3 eyeminusvertex = e_eyepos - w.xyz; vec3 eyeminusvertex = e_eyepos - w.xyz;
eyevector.x = dot(eyeminusvertex, s.xyz); eyevector.x = -dot(eyeminusvertex, s.xyz);
eyevector.y = -dot(eyeminusvertex, t.xyz); eyevector.y = dot(eyeminusvertex, t.xyz);
eyevector.z = dot(eyeminusvertex, n.xyz); eyevector.z = dot(eyeminusvertex, n.xyz);
#endif #endif
#if defined(PCF) || defined(SPOT) || defined(PROJECTION) || defined(CUBE) #if defined(PCF) || defined(SPOT) || defined(PROJECTION) || defined(CUBE)
@ -77,30 +77,37 @@ uniform vec3 l_lightcolourscale;
#endif #endif
void main () void main ()
{ {
//read raw texture samples (offsetmapping munges the tex coords first)
#ifdef OFFSETMAPPING #ifdef OFFSETMAPPING
vec2 tcoffsetmap = offsetmap(s_t1, tcbase, eyevector); vec2 tcoffsetmap = offsetmap(s_t1, tcbase, eyevector);
#define tcbase tcoffsetmap #define tcbase tcoffsetmap
#endif #endif
vec3 bases = vec3(texture2D(s_t0, tcbase)); vec3 bases = vec3(texture2D(s_t0, tcbase));
#if defined(BUMP) || defined(SPECULAR) #if defined(BUMP) || defined(SPECULAR)
vec3 bumps = vec3(texture2D(s_t1, tcbase)) - 0.5; vec3 bumps = normalize(vec3(texture2D(s_t1, tcbase)) - 0.5);
#endif #endif
#ifdef SPECULAR #ifdef SPECULAR
vec4 specs = texture2D(s_t2, tcbase); vec4 specs = texture2D(s_t2, tcbase);
#endif #endif
vec3 nl = normalize(lightvector); vec3 nl = normalize(lightvector);
float colorscale = max(1.0 - dot(lightvector, lightvector)/(l_lightradius*l_lightradius), 0.0); float colorscale = max(1.0 - (dot(lightvector, lightvector)/(l_lightradius*l_lightradius)), 0.0);
vec3 diff; vec3 diff;
#ifdef BUMP #ifdef BUMP
diff = bases * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(2.0*bumps, nl), 0.0)); diff = bases * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(bumps, nl), 0.0));
#else #else
diff = bases * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(vec3(0.0, 0.0, 1.0), nl), 0.0)); diff = bases * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(vec3(0.0, 0.0, 1.0), nl), 0.0));
#endif #endif
#ifdef SPECULAR #ifdef SPECULAR
vec3 halfdir = normalize(lightvector - normalize(eyevector)); vec3 halfdir = normalize(normalize(eyevector) + nl);
float spec = pow(max(dot(halfdir, bumps), 0.0), 1.0 + 32.0 * specs.a); float spec = pow(max(dot(halfdir, bumps), 0.0), 32.0 * specs.a);
diff += spec * specs.rgb * l_lightcolourscale.z; diff += l_lightcolourscale.z * spec * specs.rgb;
#endif #endif
#ifdef CUBE #ifdef CUBE
diff *= textureCube(s_t3, vshadowcoord.xyz).rgb; diff *= textureCube(s_t3, vshadowcoord.xyz).rgb;
#endif #endif