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#version 120
// note: gl_ModelViewMatrix actually only contains the
// model matrix, view matrix is on the projection stack
// #define use_normalmapping
// #define flip_normalmap
//uniform mat4 cameraMat;
//uniform mat4 cameraInv;
uniform vec3 cameraPos;
varying vec4 vertexWorldPos;
varying vec3 cameraDir;
varying float fogFactor;
#ifdef use_normalmapping
varying mat3 tbnMatrix;
#else
varying vec3 normalv;
#endif
uniform int numModelDynLights;
void main(void)
{
#ifdef use_normalmapping
vec3 tangent = gl_MultiTexCoord5.xyz;
vec3 bitangent = gl_MultiTexCoord6.xyz;
tbnMatrix = gl_NormalMatrix * mat3(tangent, bitangent, gl_Normal);
#else
normalv = gl_NormalMatrix * gl_Normal;
#endif
gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex; // M (!)
gl_Position = gl_ProjectionMatrix * gl_ClipVertex;
vertexWorldPos = gl_ClipVertex;
cameraDir = vertexWorldPos.xyz - cameraPos;
gl_TexCoord[0].st = gl_MultiTexCoord0.st;
#if (DEFERRED_MODE == 0)
float fogCoord = length(cameraDir.xyz);
fogFactor = (gl_Fog.end - fogCoord) * gl_Fog.scale; //gl_Fog.scale := 1.0 / (gl_Fog.end - gl_Fog.start)
fogFactor = clamp(fogFactor, 0.0, 1.0);
#endif
}
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