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** Copyright (C) 2014 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
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#ifndef TESSELLATION_NPATCH_CM_GLSLLIB
#define TESSELLATION_NPATCH_CM_GLSLLIB GLSLLIB


#include "tessellationNPatch.glsllib"


#if TESSELLATION_CONTROL_SHADER

uniform float tessLevelOuter;
uniform float tessLevelInner;

attribute vec3 varNormal[];
attribute vec3 varObjPos[];

varying vec3 varNormalTC[];
varying vec3 varObjPosTC[];

#if QT3DS_ENABLE_UV0
attribute vec3 varTexCoord0[];
varying vec3 varTexCoord0TC[];
#endif

#if QT3DS_ENABLE_TEXTAN
attribute vec3 varTangent[];
attribute vec3 varObjTangent[];
varying vec3 varTangentTC[];
varying vec3 varObjTangentTC[];
#endif

#if QT3DS_ENABLE_BINORMAL
attribute vec3 varBinormal[];
attribute vec3 varObjBinormal[];
varying vec3 varBinormalTC[];
varying vec3 varObjBinormalTC[];
#endif

#if QT3DS_ENABLE_WORLD_POSITION
attribute vec3 varWorldPos[];
varying vec3 varWorldPosTC[];
#endif

void main() {

    ctNorm[0] = varNormal[0];
    ctNorm[1] = varNormal[1];
    ctNorm[2] = varNormal[2];
#if QT3DS_ENABLE_TEXTAN
    ctTangent[0] = varObjTangent[0];
    ctTangent[1] = varObjTangent[1];
    ctTangent[2] = varObjTangent[2];
#endif
#if QT3DS_ENABLE_WORLD_POSITION
    ctWorldPos[0] = varWorldPos[0];
    ctWorldPos[1] = varWorldPos[1];
    ctWorldPos[2] = varWorldPos[2];
#endif

    gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
    tessShader( tessLevelOuter, tessLevelInner);

    varObjPosTC[gl_InvocationID] = varObjPos[gl_InvocationID];
    varNormalTC[gl_InvocationID] = varNormal[gl_InvocationID];

#if QT3DS_ENABLE_UV0
    varTexCoord0TC[gl_InvocationID] = varTexCoord0[gl_InvocationID];
#endif
#if QT3DS_ENABLE_TEXTAN
    varTangentTC[gl_InvocationID] = varTangent[gl_InvocationID];
    varObjTangentTC[gl_InvocationID] = varObjTangent[gl_InvocationID];
#endif
#if QT3DS_ENABLE_BINORMAL
    varBinormalTC[gl_InvocationID] = varBinormal[gl_InvocationID];
    varObjBinormalTC[gl_InvocationID] = varObjBinormal[gl_InvocationID];
#endif
#if QT3DS_ENABLE_WORLD_POSITION
    varWorldPosTC[gl_InvocationID] = varWorldPos[gl_InvocationID];
#endif
}

#endif


#if TESSELLATION_EVALUATION_SHADER

#if (GEOMETRY_SHADER == 1)
#define VARYING_NAME(varyingName) varyingName##TE
#else
#define VARYING_NAME(varyingName) varyingName
#endif

uniform mat3 normal_matrix;
uniform mat4 model_view_projection_matrix;

attribute vec3 varNormalTC[];
attribute vec3 varObjPosTC[];

varying vec3 VARYING_NAME(varNormal);
varying vec3 VARYING_NAME(varObjPos);

#if QT3DS_ENABLE_UV0
attribute vec3 varTexCoord0TC[];
varying vec3 VARYING_NAME(varTexCoord0);
#endif

#if QT3DS_ENABLE_TEXTAN
attribute vec3 varTangentTC[];
attribute vec3 varObjTangentTC[];
varying vec3 VARYING_NAME(varTangent);
varying vec3 VARYING_NAME(varObjTangent);
#endif

#if QT3DS_ENABLE_BINORMAL
attribute vec3 varBinormalTC[];
attribute vec3 varObjBinormalTC[];
varying vec3 VARYING_NAME(varBinormal);
varying vec3 VARYING_NAME(varObjBinormal);
#endif

#if QT3DS_ENABLE_WORLD_POSITION
attribute vec3 varWorldPosTC[];
varying vec3 VARYING_NAME(varWorldPos);
#endif

void main() {

    ctNorm[0] = varNormalTC[0];
    ctNorm[1] = varNormalTC[1];
    ctNorm[2] = varNormalTC[2];
#if QT3DS_ENABLE_TEXTAN
    ctTangent[0] = varObjTangentTC[0];
    ctTangent[1] = varObjTangentTC[1];
    ctTangent[2] = varObjTangentTC[2];
#endif

    vec4 pos = tessShader( );

    gl_Position = model_view_projection_matrix * pos;

    VARYING_NAME(varObjPos) = gl_TessCoord.z * varObjPosTC[0] + gl_TessCoord.x * varObjPosTC[1] + gl_TessCoord.y * varObjPosTC[2];

#if QT3DS_ENABLE_UV0
    VARYING_NAME(varTexCoord0) = gl_TessCoord.z * varTexCoord0TC[0] + gl_TessCoord.x * varTexCoord0TC[1] + gl_TessCoord.y * varTexCoord0TC[2];
#endif
#if QT3DS_ENABLE_WORLD_POSITION
    VARYING_NAME(varWorldPos) = gl_TessCoord.z * varWorldPosTC[0] + gl_TessCoord.x * varWorldPosTC[1] + gl_TessCoord.y * varWorldPosTC[2];
#endif

    VARYING_NAME(varNormal) = normalize(normal_matrix * teNorm);

#if QT3DS_ENABLE_TEXTAN
    VARYING_NAME(varTangent) = normalize(normal_matrix * teTangent);
    VARYING_NAME(varObjTangent) = gl_TessCoord.z * varObjTangentTC[0] + gl_TessCoord.x * varObjTangentTC[1] + gl_TessCoord.y * varObjTangentTC[2];
#endif
#if QT3DS_ENABLE_BINORMAL
    VARYING_NAME(varBinormal) = normalize(normal_matrix * teBinormal);
    VARYING_NAME(varObjBinormal) = gl_TessCoord.z * varObjBinormalTC[0] + gl_TessCoord.x * varObjBinormalTC[1] + gl_TessCoord.y * varObjBinormalTC[2];
#endif
}

#endif

#endif