ilikecats/stk-code_catmod
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Use Blinn Phong model.

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vlj 2014-04-06 21:23:09 +02:00 committed by Vincent Lejeune
parent 0b318b9c7e
commit cafc07680a
3 changed files with 41 additions and 37 deletions
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24
data/shaders/pointlight.frag
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@ -14,17 +14,17 @@ out vec4 Specular;
vec3 DecodeNormal(vec2 n); vec3 DecodeNormal(vec2 n);
void main() { void main()
{
vec2 texc = gl_FragCoord.xy / screen; vec2 texc = gl_FragCoord.xy / screen;
float z = texture(dtex, texc).x; float z = texture(dtex, texc).x;
vec3 norm = normalize(DecodeNormal(2. * texture(ntex, texc).xy - 1.)); vec3 norm = normalize(DecodeNormal(2. * texture(ntex, texc).xy - 1.));
//float roughness = texture(ntex, texc).z;
vec4 xpos = 2.0 * vec4(texc, z, 1.0) - 1.0f; vec4 xpos = 2.0 * vec4(texc, z, 1.0) - 1.0f;
xpos = invproj * xpos; xpos = invproj * xpos;
xpos /= xpos.w; xpos /= xpos.w;
vec3 eyedir = normalize(xpos.xyz); vec3 eyedir = -normalize(xpos.xyz);
vec3 diffuse = vec3(0.), specular = vec3(0.);
vec4 pseudocenter = ViewMatrix * vec4(center.xyz, 1.0); vec4 pseudocenter = ViewMatrix * vec4(center.xyz, 1.0);
pseudocenter /= pseudocenter.w; pseudocenter /= pseudocenter.w;
@ -35,15 +35,13 @@ void main() {
float spec_att = (energy + 10.) * 200. / (4. * 3.14 * d * d); float spec_att = (energy + 10.) * 200. / (4. * 3.14 * d * d);
// Light Direction // Light Direction
vec3 L = normalize(xpos.xyz - light_pos); vec3 L = -normalize(xpos.xyz - light_pos);
// Half Light View direction
vec3 H = normalize(eyedir + L);
float NdotL = max(0.0, dot(norm, -L)); float NdotL = max(0., dot(norm, L));
diffuse += NdotL * light_col * att; float NdotH = max(0., dot(norm, H));
// Reflected light dir
vec3 R = reflect(-L, norm);
float RdotE = max(0.0, dot(R, eyedir));
specular += pow(RdotE, spec) * light_col * spec_att;
Diffuse = vec4(diffuse, 1.); Diffuse = vec4(NdotL * light_col * att, 1.);
Specular = vec4(specular , 1.); Specular = vec4(pow(NdotH, spec) * light_col * NdotL * spec_att, 1.);
} }

11
data/shaders/sunlight.frag
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@ -36,14 +36,17 @@ void main() {
} }
vec3 norm = normalize(DecodeNormal(2. * texture(ntex, uv).xy - 1.)); vec3 norm = normalize(DecodeNormal(2. * texture(ntex, uv).xy - 1.));
vec3 eyedir = -normalize(xpos.xyz);
// Normalized on the cpu // Normalized on the cpu
vec3 L = direction; vec3 L = direction;
// Half Light View direction
vec3 H = normalize(eyedir + L);
float NdotL = max(0.0, dot(norm, L)); float NdotL = max(0., dot(norm, L));
vec3 R = reflect(L, norm); float NdotH = max(0., dot(norm, H));
float RdotE = max(0.0, dot(R, normalize(xpos.xyz)));
float Specular = pow(RdotE, 200); float Specular = pow(NdotH, 200) * NdotL;
vec3 outcol = NdotL * col; vec3 outcol = NdotL * col;

11
data/shaders/sunlightshadow.frag
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@ -64,14 +64,17 @@ void main() {
xpos.xyz /= xpos.w; xpos.xyz /= xpos.w;
vec3 norm = normalize(DecodeNormal(2. * texture(ntex, uv).xy - 1.)); vec3 norm = normalize(DecodeNormal(2. * texture(ntex, uv).xy - 1.));
vec3 eyedir = -normalize(xpos.xyz);
// Normalized on the cpu // Normalized on the cpu
vec3 L = direction; vec3 L = direction;
// Half Light View direction
vec3 H = normalize(eyedir + L);
float NdotL = max(0.0, dot(norm, L)); float NdotL = max(0., dot(norm, L));
vec3 R = reflect(L, norm); float NdotH = max(0., dot(norm, H));
float RdotE = max(0.0, dot(R, normalize(xpos.xyz)));
float Specular = pow(RdotE, 200); float Specular = pow(NdotH, 200) * NdotL;
vec3 outcol = NdotL * col; vec3 outcol = NdotL * col;