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attribute vec4 attr_TexCoord0;
#if defined(USE_LIGHTMAP) || defined(USE_TCGEN)
attribute vec4 attr_TexCoord1;
#endif
attribute vec4 attr_Color;
attribute vec3 attr_Position;
attribute vec3 attr_Normal;
attribute vec3 attr_Tangent;
attribute vec3 attr_Bitangent;
#if defined(USE_VERTEX_ANIMATION)
attribute vec3 attr_Position2;
attribute vec3 attr_Normal2;
attribute vec3 attr_Tangent2;
attribute vec3 attr_Bitangent2;
#endif
#if defined(USE_LIGHT) && !defined(USE_LIGHT_VECTOR)
attribute vec3 attr_LightDirection;
#endif
#if defined(USE_TCGEN) || defined(USE_NORMALMAP) || defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
uniform vec3 u_ViewOrigin;
#endif
#if defined(USE_TCGEN)
uniform int u_TCGen0;
uniform vec3 u_TCGen0Vector0;
uniform vec3 u_TCGen0Vector1;
#endif
#if defined(USE_TCMOD)
uniform vec4 u_DiffuseTexMatrix;
uniform vec4 u_DiffuseTexOffTurb;
#endif
uniform mat4 u_ModelViewProjectionMatrix;
uniform vec4 u_BaseColor;
uniform vec4 u_VertColor;
#if defined(USE_MODELMATRIX)
uniform mat4 u_ModelMatrix;
#endif
#if defined(USE_VERTEX_ANIMATION)
uniform float u_VertexLerp;
#endif
#if defined(USE_LIGHT_VECTOR)
uniform vec4 u_LightOrigin;
uniform float u_LightRadius;
uniform vec3 u_DirectedLight;
#if defined(USE_FAST_LIGHT)
uniform vec3 u_AmbientLight;
#endif
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
uniform vec4 u_PrimaryLightOrigin;
uniform float u_PrimaryLightRadius;
#endif
varying vec4 var_TexCoords;
varying vec4 var_Color;
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)) || defined(USE_PARALLAXMAP)
varying vec4 var_Normal;
varying vec4 var_Tangent;
varying vec4 var_Bitangent;
#endif
#if defined(USE_LIGHT_VERTEX) && !defined(USE_FAST_LIGHT)
varying vec3 var_LightColor;
#endif
#if defined(USE_LIGHT) && !defined(USE_DELUXEMAP) && !defined(USE_FAST_LIGHT)
varying vec4 var_LightDir;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
varying vec4 var_PrimaryLightDir;
#endif
#if defined(USE_TCGEN)
vec2 GenTexCoords(int TCGen, vec3 position, vec3 normal, vec3 TCGenVector0, vec3 TCGenVector1)
{
vec2 tex = attr_TexCoord0.st;
if (TCGen == TCGEN_LIGHTMAP)
{
tex = attr_TexCoord1.st;
}
else if (TCGen == TCGEN_ENVIRONMENT_MAPPED)
{
vec3 viewer = normalize(u_ViewOrigin - position);
tex = -reflect(viewer, normal).yz * vec2(0.5, -0.5) + 0.5;
}
else if (TCGen == TCGEN_VECTOR)
{
tex = vec2(dot(position, TCGenVector0), dot(position, TCGenVector1));
}
return tex;
}
#endif
#if defined(USE_TCMOD)
vec2 ModTexCoords(vec2 st, vec3 position, vec4 texMatrix, vec4 offTurb)
{
float amplitude = offTurb.z;
float phase = offTurb.w;
vec2 st2 = vec2(dot(st, texMatrix.xz), dot(st, texMatrix.yw)) + offTurb.xy;
vec3 offsetPos = position * 0.0009765625;
offsetPos.x += offsetPos.z;
vec2 texOffset = sin((offsetPos.xy + vec2(phase)) * 2.0 * M_PI);
return st2 + texOffset * amplitude;
}
#endif
float CalcLightAttenuation(vec3 dir, float sqrRadius)
{
// point light at >0 radius, directional otherwise
float point = float(sqrRadius > 0.0);
// inverse square light
float attenuation = sqrRadius / dot(dir, dir);
// zero light at radius, approximating q3 style
// also don't attenuate directional light
attenuation = (0.5 * attenuation - 1.5) * point + 1.0;
// clamp attenuation
#if defined(NO_LIGHT_CLAMP)
attenuation = max(attenuation, 0.0);
#else
attenuation = clamp(attenuation, 0.0, 1.0);
#endif
return attenuation;
}
void main()
{
#if defined(USE_VERTEX_ANIMATION)
vec3 position = mix(attr_Position, attr_Position2, u_VertexLerp);
vec3 normal = normalize(mix(attr_Normal, attr_Normal2, u_VertexLerp));
vec3 tangent = normalize(mix(attr_Tangent, attr_Tangent2, u_VertexLerp));
vec3 bitangent = normalize(mix(attr_Bitangent, attr_Bitangent2, u_VertexLerp));
#else
vec3 position = attr_Position;
vec3 normal = attr_Normal;
vec3 tangent = attr_Tangent;
vec3 bitangent = attr_Bitangent;
#endif
#if defined(USE_TCGEN)
vec2 texCoords = GenTexCoords(u_TCGen0, position, normal, u_TCGen0Vector0, u_TCGen0Vector1);
#else
vec2 texCoords = attr_TexCoord0.st;
#endif
#if defined(USE_TCMOD)
var_TexCoords.xy = ModTexCoords(texCoords, position, u_DiffuseTexMatrix, u_DiffuseTexOffTurb);
#else
var_TexCoords.xy = texCoords;
#endif
gl_Position = u_ModelViewProjectionMatrix * vec4(position, 1.0);
#if defined(USE_MODELMATRIX)
position = (u_ModelMatrix * vec4(position, 1.0)).xyz;
normal = (u_ModelMatrix * vec4(normal, 0.0)).xyz;
tangent = (u_ModelMatrix * vec4(tangent, 0.0)).xyz;
bitangent = (u_ModelMatrix * vec4(bitangent, 0.0)).xyz;
#endif
#if defined(USE_LIGHT_VECTOR)
vec3 L = u_LightOrigin.xyz - (position * u_LightOrigin.w);
#elif defined(USE_LIGHT) && !defined(USE_LIGHT_VECTOR)
vec3 L = attr_LightDirection;
#if defined(USE_MODELMATRIX)
L = (u_ModelMatrix * vec4(L, 0.0)).xyz;
#endif
#endif
#if defined(USE_LIGHTMAP)
var_TexCoords.zw = attr_TexCoord1.st;
#endif
#if defined(USE_LIGHT_VERTEX) && !defined(USE_FAST_LIGHT)
var_LightColor = u_VertColor.rgb * attr_Color.rgb;
var_Color.rgb = vec3(1.0);
var_Color.a = u_VertColor.a * attr_Color.a + u_BaseColor.a;
#else
var_Color = u_VertColor * attr_Color + u_BaseColor;
#endif
#if defined(USE_LIGHT_VECTOR) && defined(USE_FAST_LIGHT)
float attenuation = CalcLightAttenuation(L, u_LightRadius * u_LightRadius);
float NL = clamp(dot(normal, normalize(L)), 0.0, 1.0);
var_Color.rgb *= u_DirectedLight * attenuation * NL + u_AmbientLight;
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)) || defined(USE_PARALLAXMAP)
var_Normal.xyz = normal;
var_Tangent.xyz = tangent;
var_Bitangent.xyz = bitangent;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
var_PrimaryLightDir.xyz = (u_PrimaryLightOrigin.xyz - (position * u_PrimaryLightOrigin.w));
var_PrimaryLightDir.w = u_PrimaryLightRadius * u_PrimaryLightRadius;
#endif
#if defined(USE_LIGHT) && !defined(USE_DELUXEMAP) && !defined(USE_FAST_LIGHT)
#if defined(USE_LIGHT_VECTOR)
var_LightDir = vec4(L, u_LightRadius * u_LightRadius);
#else
var_LightDir = vec4(L, 0.0);
#endif
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)) || defined(USE_PARALLAXMAP)
vec3 viewDir = (u_ViewOrigin - position);
#endif
#if defined(USE_TANGENT_SPACE_LIGHT)
mat3 tangentToWorld = mat3(tangent, bitangent, normal);
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
var_PrimaryLightDir.xyz = var_PrimaryLightDir.xyz * tangentToWorld;
#endif
#if defined(USE_LIGHT) && !defined(USE_DELUXEMAP) && !defined(USE_FAST_LIGHT)
var_LightDir.xyz = var_LightDir.xyz * tangentToWorld;
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)) || defined(USE_PARALLAXMAP)
viewDir = viewDir * tangentToWorld;
#endif
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)) || defined(USE_PARALLAXMAP)
// store view direction in tangent space to save on varyings
var_Normal.w = viewDir.x;
var_Tangent.w = viewDir.y;
var_Bitangent.w = viewDir.z;
#endif
}
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