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#import "Common/ShaderLib/Optics.glsllib"
uniform float m_Shininess;
varying vec2 texCoord;
varying vec4 AmbientSum;
varying vec4 DiffuseSum;
varying vec4 SpecularSum;
varying float vDepth;
varying vec3 vNormal;
#ifdef DIFFUSEMAP
uniform sampler2D m_DiffuseMap;
#endif
#ifdef SPECULARMAP
uniform sampler2D m_SpecularMap;
#endif
#ifdef PARALLAXMAP
uniform sampler2D m_ParallaxMap;
#endif
#ifdef NORMALMAP
uniform sampler2D m_NormalMap;
varying mat3 tbnMat;
#endif
vec2 encodeNormal(in vec3 n){
vec2 enc = normalize(n.xy) * (sqrt(-n.z*0.5+0.5));
enc = enc*vec2(0.5)+vec2(0.5);
return enc;
}
void main(){
vec2 newTexCoord = texCoord;
float height = 0.0;
#if defined(PARALLAXMAP) || defined(NORMALMAP_PARALLAX)
#ifdef PARALLAXMAP
height = texture2D(m_ParallaxMap, texCoord).r;
#else
height = texture2D(m_NormalMap, texCoord).a;
#endif
float heightScale = 0.05;
float heightBias = heightScale * -0.5;
height = (height * heightScale + heightBias);
#endif
// ***********************
// Read from textures
// ***********************
#if defined(NORMALMAP) && !defined(VERTEX_LIGHTING)
vec4 normalHeight = texture2D(m_NormalMap, newTexCoord);
vec3 normal = (normalHeight.xyz * vec3(2.0) - vec3(1.0));
normal.y = -normal.y;
normal = tbnMat * normal;
#else
vec3 normal = vNormal;
#if !defined(LOW_QUALITY) && !defined(V_TANGENT)
normal = normalize(normal);
#endif
#endif
#ifdef DIFFUSEMAP
vec4 diffuseColor = texture2D(m_DiffuseMap, newTexCoord);
#else
vec4 diffuseColor = vec4(1.0);
#endif
#ifdef SPECULARMAP
vec4 specularColor = texture2D(m_SpecularMap, newTexCoord);
#else
vec4 specularColor = vec4(1.0);
#endif
diffuseColor.rgb *= DiffuseSum.rgb;
specularColor.rgb *= SpecularSum.rgb;
gl_FragData[0] = vec4(diffuseColor.rgb, 1.0);
gl_FragData[1] = vec4(encodeNormal(normal), 0.0, 0.0);
/*encodeNormal(vNormal));*/
gl_FragData[2] = vec4(specularColor.rgb, m_Shininess / 128.0);
}
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