[require]
GLSL >= 1.10

[vertex shader]
#version 130
#extension GL_ARB_draw_instanced : enable
#define QF_GLSL_VERSION 130
#define VERTEX_SHADER
#if !defined(myhalf)
//#if !defined(__GLSL_CG_DATA_TYPES)
#define myhalf float
#define myhalf2 vec2
#define myhalf3 vec3
#define myhalf4 vec4
//#else
//#define myhalf half
//#define myhalf2 half2
//#define myhalf3 half3
//#define myhalf4 half4
//#endif
#endif

#if QF_GLSL_VERSION >= 130
  precision highp float;

# ifdef VERTEX_SHADER
   out myhalf4 qf_FrontColor;
#  define qf_varying out
#  define qf_attribute in
# endif
# ifdef FRAGMENT_SHADER
   in myhalf4 qf_FrontColor;
   out myhalf4	qf_FragColor;
#  define qf_varying in
#  define qf_attribute in
# endif

# define qf_texture texture
# define qf_textureCube texture
# define qf_textureLod textureLod
# define qf_textureOffset(a,b,c,d) textureOffset(a,b,ivec2(c,d))
# define qf_shadow texture
#else
# ifdef VERTEX_SHADER
#  define qf_FrontColor gl_FrontColor
#  define qf_varying varying
#  define qf_attribute attribute
# endif

# ifdef FRAGMENT_SHADER
#  define qf_FrontColor gl_Color
#  define qf_FragColor gl_FragColor
#  define qf_varying varying
#  define qf_attribute attribute
# endif
# define qf_texture texture2D
# define qf_textureLod texture2DLod
# define qf_textureCube textureCube
# define qf_textureOffset(a,b,c,d) texture2DOffset(a,b,ivec2(c,d))
# define qf_shadow shadow2D
#endif

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_TWOPI
#define M_TWOPI 6.28318530717958647692
#endif

#ifndef MAX_UNIFORM_BONES
#define MAX_UNIFORM_BONES 100
#endif

#ifndef MAX_UNIFORM_INSTANCES
#define MAX_UNIFORM_INSTANCES 40
#endif
uniform vec3 u_QF_ViewOrigin;
uniform mat3 u_QF_ViewAxis;
uniform float u_QF_MirrorSide;
uniform vec3 u_QF_EntityOrigin;
uniform float u_QF_ShaderTime;

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_TWOPI
#define M_TWOPI 6.28318530717958647692
#endif

#ifndef WAVE_SIN
float QF_WaveFunc_Sin(float x)
{
x -= floor(x);
return sin(x * M_TWOPI);
}
float QF_WaveFunc_Triangle(float x)
{
x -= floor(x);
return step(x, 0.25) * x * 4.0 + (2.0 - 4.0 * step(0.25, x) * step(x, 0.75) * x) + ((step(0.75, x) * x - 0.75) * 4.0 - 1.0);
}
float QF_WaveFunc_Square(float x)
{
x -= floor(x);
return step(x, 0.5) * 2.0 - 1.0;
}
float QF_WaveFunc_Sawtooth(float x)
{
x -= floor(x);
return x;
}
float QF_QF_WaveFunc_InverseSawtooth(float x)
{
x -= floor(x);
return 1.0 - x;
}

#define WAVE_SIN(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Sin((phase)+(time)*(freq))))
#define WAVE_TRIANGLE(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Triangle((phase)+(time)*(freq))))
#define WAVE_SQUARE(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Square((phase)+(time)*(freq))))
#define WAVE_SAWTOOTH(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Sawtooth((phase)+(time)*(freq))))
#define WAVE_INVERSESAWTOOTH(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_QF_WaveFunc_InverseSawtooth((phase)+(time)*(freq))))
#endif

#ifdef VERTEX_SHADER
attribute vec4 a_BonesIndices;
attribute vec4 a_BonesWeights;

uniform vec4 u_QF_DualQuats[MAX_UNIFORM_BONES*2];

#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

// use defines to overload the transform function

#define DUAL_QUAT_TRANSFORM_NORMALS
#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

#define DUAL_QUAT_TRANSFORM_TANGENT
#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

#endif
#ifdef VERTEX_SHADER
#ifdef APPLY_INSTANCED_ATTRIB_TRASNFORMS
attribute vec4 a_InstanceQuat;
attribute vec4 a_InstancePosAndScale;
#elif defined(GL_ARB_draw_instanced)

uniform vec4 u_QF_InstancePoints[MAX_UNIFORM_INSTANCES*2];

#define a_InstanceQuat u_QF_InstancePoints[gl_InstanceID*2]
#define a_InstancePosAndScale u_QF_InstancePoints[gl_InstanceID*2+1]
#else
uniform vec4 u_QF_InstancePoints[2];
#define a_InstanceQuat u_QF_InstancePoints[0]
#define a_InstancePosAndScale u_QF_InstancePoints[1]
#endif

void QF_InstancedTransform(inout vec4 Position, inout vec3 Normal)
{
Position.xyz = (cross(a_InstanceQuat.xyz, cross(a_InstanceQuat.xyz, Position.xyz) + Position.xyz*a_InstanceQuat.w)*2.0 + Position.xyz) *
 a_InstancePosAndScale.w + a_InstancePosAndScale.xyz;
Normal = cross(a_InstanceQuat.xyz, cross(a_InstanceQuat.xyz, Normal) + Normal*a_InstanceQuat.w)*2.0 + Normal;
}

#endif
#define QF_LatLong2Norm(ll) vec3(cos((ll).y) * sin((ll).x), sin((ll).y) * sin((ll).x), cos((ll).x))

#define APPLY_RGB_CONST
#define APPLY_ALPHA_CONST
#define NUM_DLIGHTS 8
#define NUM_LIGHTMAPS 1
#define APPLY_SPECULAR
#define APPLY_RELIEFMAPPING

#define DRAWFLAT_NORMAL_STEP	0.5		// floor or ceiling if < abs(normal.z)
uniform mat4 u_ModelViewMatrix;
uniform mat4 u_ModelViewProjectionMatrix;

uniform float u_ShaderTime;

uniform vec3 u_ViewOrigin;
uniform mat3 u_ViewAxis;

uniform vec3 u_EntityDist;
uniform vec3 u_EntityOrigin;
uniform myhalf4 u_EntityColor;

uniform myhalf4 u_ConstColor;
uniform myhalf4 u_RGBGenFuncArgs, u_AlphaGenFuncArgs;
uniform myhalf3 u_LightstyleColor[4]; // lightstyle colors

uniform myhalf3 u_LightAmbient;
uniform myhalf3 u_LightDiffuse;
uniform vec3 u_LightDir;

uniform myhalf2 u_BlendMix;

uniform vec2 u_TextureMatrix[3];
#define TextureMatrix2x3Mul(m2x3,tc) vec2(dot((m2x3)[0],(tc)) + (m2x3)[2][0], dot((m2x3)[1],(tc)) + (m2x3)[2][1])

uniform float u_MirrorSide;

uniform float u_ZNear, u_ZFar;

uniform ivec4 u_Viewport; // x, y, width, height

uniform vec4 u_TextureParams;

uniform myhalf u_SoftParticlesScale;


#if defined(NUM_DLIGHTS)
#if defined(FRAGMENT_SHADER)
#if defined(NUM_DLIGHTS)

struct DynamicLight
{
	myhalf Radius;
	vec3 Position;
	myhalf3 Diffuse;
};

uniform DynamicLight u_DynamicLights[NUM_DLIGHTS];
uniform int u_NumDynamicLights;
#ifdef DLIGHTS_SURFACE_NORMAL_IN
myhalf3 DynamicLightsSummaryColor(in vec3 Position, in myhalf3 surfaceNormalModelspace)
#else
myhalf3 DynamicLightsSummaryColor(in vec3 Position)
#endif
{
	myhalf3 Color = myhalf3(0.0);

#if QF_GLSL_VERSION >= 330
	for (int i = 0; i < u_NumDynamicLights; i++)
#else
	for (int i = 0; i < NUM_DLIGHTS; i++)
#endif
	{
		myhalf3 STR = myhalf3(u_DynamicLights[i].Position - Position);
		myhalf distance = length(STR);
		myhalf falloff = clamp(1.0 - distance / u_DynamicLights[i].Radius, 0.0, 1.0);

		falloff *= falloff;

		#ifdef DLIGHTS_SURFACE_NORMAL_IN
		falloff *= myhalf(max(dot(normalize(STR), surfaceNormalModelspace), 0.0));
		#endif

		Color += falloff * u_DynamicLights[i].Diffuse;
	}

	return Color;
}


#define DLIGHTS_SURFACE_NORMAL_IN
#ifdef DLIGHTS_SURFACE_NORMAL_IN
myhalf3 DynamicLightsSummaryColor(in vec3 Position, in myhalf3 surfaceNormalModelspace)
#else
myhalf3 DynamicLightsSummaryColor(in vec3 Position)
#endif
{
	myhalf3 Color = myhalf3(0.0);

#if QF_GLSL_VERSION >= 330
	for (int i = 0; i < u_NumDynamicLights; i++)
#else
	for (int i = 0; i < NUM_DLIGHTS; i++)
#endif
	{
		myhalf3 STR = myhalf3(u_DynamicLights[i].Position - Position);
		myhalf distance = length(STR);
		myhalf falloff = clamp(1.0 - distance / u_DynamicLights[i].Radius, 0.0, 1.0);

		falloff *= falloff;

		#ifdef DLIGHTS_SURFACE_NORMAL_IN
		falloff *= myhalf(max(dot(normalize(STR), surfaceNormalModelspace), 0.0));
		#endif

		Color += falloff * u_DynamicLights[i].Diffuse;
	}

	return Color;
}


#endif

#endif
#endif

#ifdef APPLY_FOG
struct Fog
{
	float EyeDist;
	vec4 EyePlane, Plane;
	myhalf3 Color;
	float Scale;
};

uniform Fog u_Fog;

#define FOG_TEXCOORD_STEP 1.0/256.0

#define FogDensity(coord) sqrt(clamp((coord)[0],0.0,1.0))*step(FOG_TEXCOORD_STEP,(coord)[1])

#define FOG_GEN_OUTPUT_COLOR
#if defined(FOG_GEN_OUTPUT_COLOR)
void FogGen(in vec4 Position, inout myhalf4 outColor, in myhalf2 blendMix)
#elif defined(FOG_GEN_OUTPUT_TEXCOORDS)
void FogGen(in vec4 Position, inout vec2 outTexCoord)
#endif
{
	// side = vec2(inside, outside)
	myhalf2 side = myhalf2(step(u_Fog.EyeDist, 0.0), step(0.0, u_Fog.EyeDist));
	myhalf FDist = dot(Position.xyz, u_Fog.EyePlane.xyz) - u_Fog.EyePlane.w;
	myhalf FVdist = dot(Position.xyz, u_Fog.Plane.xyz) - u_Fog.Plane.w;
	myhalf FogDistScale = FVdist / (FVdist - u_Fog.EyeDist);

#if defined(FOG_GEN_OUTPUT_COLOR)
	myhalf FogDist = FDist * dot(side, myhalf2(1.0, FogDistScale));
	myhalf FogScale = myhalf(clamp(1.0 - FogDist * u_Fog.Scale, 0.0, 1.0));
	outColor *= mix(myhalf4(1.0), myhalf4(FogScale), blendMix.xxxy);
#endif

#if defined(FOG_GEN_OUTPUT_TEXCOORDS)
	myhalf FogS = FDist * dot(side, myhalf2(1.0, step(FVdist, 0.0) * FogDistScale));
	myhalf FogT = -FVdist;
	outTexCoord = vec2(FogS * u_Fog.Scale, FogT * u_Fog.Scale + 1.5*FOG_TEXCOORD_STEP);
#endif
}


#undef FOG_GEN_OUTPUT_COLOR
#define FOG_GEN_OUTPUT_TEXCOORDS
#if defined(FOG_GEN_OUTPUT_COLOR)
void FogGen(in vec4 Position, inout myhalf4 outColor, in myhalf2 blendMix)
#elif defined(FOG_GEN_OUTPUT_TEXCOORDS)
void FogGen(in vec4 Position, inout vec2 outTexCoord)
#endif
{
	// side = vec2(inside, outside)
	myhalf2 side = myhalf2(step(u_Fog.EyeDist, 0.0), step(0.0, u_Fog.EyeDist));
	myhalf FDist = dot(Position.xyz, u_Fog.EyePlane.xyz) - u_Fog.EyePlane.w;
	myhalf FVdist = dot(Position.xyz, u_Fog.Plane.xyz) - u_Fog.Plane.w;
	myhalf FogDistScale = FVdist / (FVdist - u_Fog.EyeDist);

#if defined(FOG_GEN_OUTPUT_COLOR)
	myhalf FogDist = FDist * dot(side, myhalf2(1.0, FogDistScale));
	myhalf FogScale = myhalf(clamp(1.0 - FogDist * u_Fog.Scale, 0.0, 1.0));
	outColor *= mix(myhalf4(1.0), myhalf4(FogScale), blendMix.xxxy);
#endif

#if defined(FOG_GEN_OUTPUT_TEXCOORDS)
	myhalf FogS = FDist * dot(side, myhalf2(1.0, step(FVdist, 0.0) * FogDistScale));
	myhalf FogT = -FVdist;
	outTexCoord = vec2(FogS * u_Fog.Scale, FogT * u_Fog.Scale + 1.5*FOG_TEXCOORD_STEP);
#endif
}

#endif
#ifdef APPLY_GREYSCALE
myhalf3 Greyscale(myhalf3 color)
{
	return myhalf3(dot(color, myhalf3(0.299, 0.587, 0.114)));
}

#endif

qf_varying vec2 v_TexCoord;
#ifdef NUM_LIGHTMAPS
qf_varying vec2 v_LightmapTexCoord[NUM_LIGHTMAPS];
#endif

qf_varying vec3 v_Position;

#if defined(APPLY_SPECULAR) || defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
qf_varying vec3 v_EyeVector;
#endif

qf_varying mat3 v_StrMatrix; // directions of S/T/R texcoords (tangent, binormal, normal)

#if defined(APPLY_FOG) && !defined(APPLY_FOG_COLOR)
qf_varying vec2 v_FogCoord;
#endif

#ifdef VERTEX_SHADER
#ifdef VERTEX_SHADER
qf_attribute vec4 a_Position;
qf_attribute vec4 a_SVector;
qf_attribute vec4 a_Normal;
qf_attribute vec4 a_Color;
qf_attribute vec2 a_TexCoord;
qf_attribute vec2 a_LightmapCoord0, a_LightmapCoord1, a_LightmapCoord2, a_LightmapCoord3;
#endif
void TransformVerts(inout vec4 Position, inout vec3 Normal, inout vec2 TexCoord)
{
#ifdef NUM_BONE_INFLUENCES
	QF_VertexDualQuatsTransform(NUM_BONE_INFLUENCES, Position, Normal);
#endif

#ifdef APPLY_DEFORMVERTS
	QF_DeformVerts(Position, Normal, TexCoord);
#endif

#ifdef APPLY_INSTANCED_TRANSFORMS
	QF_InstancedTransform(Position, Normal);
#endif
}

void TransformVerts(inout vec4 Position, inout vec3 Normal, inout vec3 Tangent, inout vec2 TexCoord)
{
#ifdef NUM_BONE_INFLUENCES
	QF_VertexDualQuatsTransform(NUM_BONE_INFLUENCES, Position, Normal, Tangent);
#endif

#ifdef APPLY_DEFORMVERTS
	QF_DeformVerts(Position, Normal, TexCoord);
#endif

#ifdef APPLY_INSTANCED_TRANSFORMS
	QF_InstancedTransform(Position, Normal);
#endif
}
myhalf4 VertexRGBGen(in vec4 Position, in vec3 Normal, in myhalf4 VertexColor)
{
#if defined(APPLY_RGB_DISTANCERAMP) || defined(APPLY_ALPHA_DISTANCERAMP)
#define DISTANCERAMP(x1,x2,y1,y2) ((y2 - y1) / (x2 - x1) * (clamp(myhalf(dot(u_EntityDist - Position.xyz, Normal)),0.0,x2) - x1) + y1)
#endif

#if defined(APPLY_RGB_CONST) && defined(APPLY_ALPHA_CONST)
	myhalf4 Color = u_ConstColor;
#else
	myhalf4 Color = myhalf4(1.0);

#if defined(APPLY_RGB_CONST)
	Color.rgb = u_ConstColor.rgb;
#elif defined(APPLY_RGB_VERTEX)
	Color.rgb = VertexColor.rgb;
#elif defined(APPLY_RGB_ONE_MINUS_VERTEX)
	Color.rgb = myhalf3(1.0) - VertexColor.rgb;
#elif defined(APPLY_RGB_GEN_DIFFUSELIGHT)
	Color.rgb = myhalf3(u_LightAmbient + max(dot(u_LightDir, Normal), 0.0) * u_LightDiffuse);
#endif

#if defined(APPLY_ALPHA_CONST)
	Color.a = u_ConstColor.a;
#elif defined(APPLY_ALPHA_VERTEX)
	Color.a = VertexColor.a;
#elif defined(APPLY_ALPHA_ONE_MINUS_VERTEX)
	Color.a = 1.0 - VertexColor.a;
#endif

#endif

#ifdef APPLY_RGB_DISTANCERAMP
	Color.rgb *= DISTANCERAMP(u_RGBGenFuncArgs[2], u_RGBGenFuncArgs[3], u_RGBGenFuncArgs[0], u_RGBGenFuncArgs[1]);
#endif

#ifdef APPLY_ALPHA_DISTANCERAMP
	Color.a *= DISTANCERAMP(u_AlphaGenFuncArgs[2], u_AlphaGenFuncArgs[3], u_AlphaGenFuncArgs[0], u_AlphaGenFuncArgs[1]);
#endif

	return Color;
#if defined(APPLY_RGB_DISTANCERAMP) || defined(APPLY_ALPHA_DISTANCERAMP)
#undef DISTANCERAMP
#endif
}


void main()
{
	vec4 Position = a_Position;
	vec3 Normal = a_Normal.xyz;
	myhalf4 inColor = myhalf4(a_Color);
	vec2 TexCoord = a_TexCoord;
	vec3 Tangent = a_SVector.xyz;
	float TangentDir = a_SVector.w;

	TransformVerts(Position, Normal, Tangent, TexCoord);

	myhalf4 outColor = VertexRGBGen(Position, Normal, inColor);

#ifdef APPLY_FOG
#if defined(APPLY_FOG_COLOR)
	FogGen(Position, outColor, u_BlendMix);
#else
	FogGen(Position, v_FogCoord);
#endif
#endif // APPLY_FOG

	qf_FrontColor = vec4(outColor);

	v_TexCoord = TextureMatrix2x3Mul(u_TextureMatrix, TexCoord);

#ifdef NUM_LIGHTMAPS
	v_LightmapTexCoord[0] = a_LightmapCoord0;
#if NUM_LIGHTMAPS >= 2
	v_LightmapTexCoord[1] = a_LightmapCoord1;
#if NUM_LIGHTMAPS >= 3
	v_LightmapTexCoord[2] = a_LightmapCoord2;
#if NUM_LIGHTMAPS >= 4
	v_LightmapTexCoord[3] = a_LightmapCoord3;
#endif // NUM_LIGHTMAPS >= 4
#endif // NUM_LIGHTMAPS >= 3
#endif // NUM_LIGHTMAPS >= 2
#endif // NUM_LIGHTMAPS

	v_StrMatrix[0] = Tangent;
	v_StrMatrix[2] = Normal;
	v_StrMatrix[1] = TangentDir * cross(Normal, Tangent);

#if defined(APPLY_SPECULAR) || defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
	vec3 EyeVectorWorld = u_ViewOrigin - Position.xyz;
	v_EyeVector = EyeVectorWorld * v_StrMatrix;
#endif

	v_Position = Position.xyz;
	gl_Position = u_ModelViewProjectionMatrix * Position;
}

#endif // VERTEX_SHADER

#ifdef FRAGMENT_SHADER
// Fragment shader

#ifdef NUM_LIGHTMAPS
uniform float u_DeluxemapOffset[NUM_LIGHTMAPS]; // s-offset for v_LightmapTexCoord
uniform sampler2D u_LightmapTexture[NUM_LIGHTMAPS];
#endif

uniform sampler2D u_BaseTexture;
uniform sampler2D u_NormalmapTexture;
uniform sampler2D u_GlossTexture;
#ifdef APPLY_DECAL
uniform sampler2D u_DecalTexture;
#endif

#ifdef APPLY_ENTITY_DECAL
uniform sampler2D u_EntityDecalTexture;
#endif

#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
uniform float u_OffsetMappingScale;
#endif

#ifdef APPLY_DRAWFLAT
uniform myhalf3 u_WallColor;
uniform myhalf3 u_FloorColor;
#endif

uniform myhalf u_GlossIntensity; // gloss scaling factor
uniform myhalf u_GlossExponent; // gloss exponent factor

#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
// The following reliefmapping and offsetmapping routine was taken from DarkPlaces
// The credit goes to LordHavoc (as always)
vec2 OffsetMapping(vec2 TexCoord)
{
#ifdef APPLY_RELIEFMAPPING
	// 14 sample relief mapping: linear search and then binary search
	// this basically steps forward a small amount repeatedly until it finds
	// itself inside solid, then jitters forward and back using decreasing
	// amounts to find the impact
	//vec3 OffsetVector = vec3(v_EyeVector.xy * ((1.0 / v_EyeVector.z) * u_OffsetMappingScale) * vec2(-1, 1), -1);
	//vec3 OffsetVector = vec3(normalize(v_EyeVector.xy) * u_OffsetMappingScale * vec2(-1, 1), -1);
	vec3 OffsetVector = vec3(normalize(v_EyeVector).xy * u_OffsetMappingScale * vec2(-1, 1), -1);
	vec3 RT = vec3(TexCoord, 1);
	OffsetVector *= 0.1;
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z)          - 0.5);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.5    - 0.25);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.25   - 0.125);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.125  - 0.0625);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.0625 - 0.03125);
	return RT.xy;
#else
	// 2 sample offset mapping (only 2 samples because of ATI Radeon 9500-9800/X300 limits)
	// this basically moves forward the full distance, and then backs up based
	// on height of samples
	//vec2 OffsetVector = vec2(v_EyeVector.xy * ((1.0 / v_EyeVector.z) * u_OffsetMappingScale) * vec2(-1, 1));
	//vec2 OffsetVector = vec2(normalize(v_EyeVector.xy) * u_OffsetMappingScale * vec2(-1, 1));
	vec2 OffsetVector = vec2(normalize(v_EyeVector).xy * u_OffsetMappingScale * vec2(-1, 1));
	TexCoord += OffsetVector;
	OffsetVector *= 0.5;
	TexCoord -= OffsetVector * qf_texture(u_NormalmapTexture, TexCoord).a;
	TexCoord -= OffsetVector * qf_texture(u_NormalmapTexture, TexCoord).a;
	return TexCoord;
#endif // APPLY_RELIEFMAPPING
}
#endif // defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)

void main()
{
#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
	// apply offsetmapping
	vec2 TexCoordOffset = OffsetMapping(v_TexCoord);
#define v_TexCoord TexCoordOffset
#endif

	myhalf3 surfaceNormal;
	myhalf3 surfaceNormalModelspace;
	myhalf3 diffuseNormalModelspace;
	float diffuseProduct;

#ifdef APPLY_CELSHADING
	int lightcell;
	float diffuseProductPositive;
	float diffuseProductNegative;
	float hardShadow;
#endif

	myhalf3 weightedDiffuseNormalModelspace;

#if !defined(APPLY_DIRECTIONAL_LIGHT) && !defined(NUM_LIGHTMAPS)
	myhalf4 color = myhalf4 (1.0, 1.0, 1.0, 1.0);
#else
	myhalf4 color = myhalf4 (0.0, 0.0, 0.0, 1.0);
#endif

	myhalf4 decal = myhalf4 (0.0, 0.0, 0.0, 1.0);

	// get the surface normal
	surfaceNormal = normalize(myhalf3(qf_texture (u_NormalmapTexture, v_TexCoord)) - myhalf3 (0.5));
	surfaceNormalModelspace = normalize(v_StrMatrix * surfaceNormal);

#ifdef APPLY_DIRECTIONAL_LIGHT

#ifdef APPLY_DIRECTIONAL_LIGHT_FROM_NORMAL
	diffuseNormalModelspace = v_StrMatrix[2];
#else
	diffuseNormalModelspace = u_LightDir;
#endif // APPLY_DIRECTIONAL_LIGHT_FROM_NORMAL

	weightedDiffuseNormalModelspace = diffuseNormalModelspace;

#ifdef APPLY_CELSHADING
	hardShadow = 0.0;
#ifdef APPLY_HALFLAMBERT
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	diffuseProductPositive = float ( clamp(diffuseProduct, 0.0, 1.0) * 0.5 + 0.5 );
	diffuseProductPositive *= diffuseProductPositive;
	diffuseProductNegative = float ( clamp(diffuseProduct, -1.0, 0.0) * 0.5 - 0.5 );
	diffuseProductNegative *= diffuseProductNegative;
	diffuseProductNegative -= 0.25;
	diffuseProduct = diffuseProductPositive;
#else
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	diffuseProductPositive = max (diffuseProduct, 0.0);
	diffuseProductNegative = (-min (diffuseProduct, 0.0) - 0.3);
#endif // APPLY_HALFLAMBERT

	// smooth the hard shadow edge
	lightcell = int(max(diffuseProduct + 0.1, 0.0) * 2.0);
	hardShadow += float(lightcell);

	lightcell = int(max(diffuseProduct + 0.055, 0.0) * 2.0);
	hardShadow += float(lightcell);

	lightcell = int(diffuseProductPositive * 2.0);
	hardShadow += float(lightcell);

	color.rgb += myhalf(0.6 + hardShadow * 0.3333333333 * 0.27 + diffuseProductPositive * 0.14);

	// backlight
	lightcell = int (diffuseProductNegative * 2.0);
	color.rgb += myhalf (float(lightcell) * 0.085 + diffuseProductNegative * 0.085);
#else

#ifdef APPLY_HALFLAMBERT
	diffuseProduct = float ( clamp(dot (surfaceNormalModelspace, diffuseNormalModelspace), 0.0, 1.0) * 0.5 + 0.5 );
	diffuseProduct *= diffuseProduct;
#else
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
#endif // APPLY_HALFLAMBERT

#ifdef APPLY_DIRECTIONAL_LIGHT_MIX
	color.rgb += qf_FrontColor.rgb;
#else
	color.rgb += u_LightDiffuse.rgb * myhalf(max (diffuseProduct, 0.0)) + u_LightAmbient;
#endif

#endif // APPLY_CELSHADING

#endif // APPLY_DIRECTIONAL_LIGHT

	// deluxemapping using light vectors in modelspace

#ifdef NUM_LIGHTMAPS
	// get light normal
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture(u_LightmapTexture[0], vec2(v_LightmapTexCoord[0].s+u_DeluxemapOffset[0],v_LightmapTexCoord[0].t))) - myhalf3 (0.5));
	// calculate directional shading
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));

#ifdef APPLY_FBLIGHTMAP
	weightedDiffuseNormalModelspace = diffuseNormalModelspace;
	// apply lightmap color
	color.rgb += myhalf3 (max (diffuseProduct, 0.0) * myhalf3 (qf_texture (u_LightmapTexture[0], v_LightmapTexCoord[0])));
#else
#define NORMALIZE_DIFFUSE_NORMAL
	weightedDiffuseNormalModelspace = u_LightstyleColor[0] * diffuseNormalModelspace;
	// apply lightmap color
	color.rgb += u_LightstyleColor[0] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[0], v_LightmapTexCoord[0]));
#endif // APPLY_FBLIGHTMAP

#ifdef APPLY_AMBIENT_COMPENSATION
	// compensate for ambient lighting
	color.rgb += myhalf((1.0 - max (diffuseProduct, 0.0))) * u_LightAmbient;
#endif

#if NUM_LIGHTMAPS >= 2
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[1], vec2(v_LightmapTexCoord[1].s+u_DeluxemapOffset[1],v_LightmapTexCoord[1].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[1] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[1] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[1], v_LightmapTexCoord[1]));
#if NUM_LIGHTMAPS >= 3
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[2], vec2(v_LightmapTexCoord[2].s+u_DeluxemapOffset[2],v_LightmapTexCoord[2].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[2] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[2] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[2], v_LightmapTexCoord[2]));
#if NUM_LIGHTMAPS >= 4
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[3], vec2(v_LightmapTexCoord[3].s+u_DeluxemapOffset[3],v_LightmapTexCoord[3].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[3] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[3] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[3], v_LightmapTexCoord[3]));
#endif // NUM_LIGHTMAPS >= 4
#endif // NUM_LIGHTMAPS >= 3
#endif // NUM_LIGHTMAPS >= 2
#endif // NUM_LIGHTMAPS

#if defined(NUM_DLIGHTS)
	color.rgb += DynamicLightsSummaryColor(v_Position, surfaceNormalModelspace);
#endif

#ifdef APPLY_SPECULAR

#ifdef NORMALIZE_DIFFUSE_NORMAL
	myhalf3 specularNormal = normalize (myhalf3 (normalize (weightedDiffuseNormalModelspace)) + myhalf3 (normalize (u_EntityDist - v_Position)));
#else
	myhalf3 specularNormal = normalize (weightedDiffuseNormalModelspace + myhalf3 (normalize (u_EntityDist - v_Position)));
#endif

	myhalf specularProduct = myhalf(dot (surfaceNormalModelspace, specularNormal));
	color.rgb += (myhalf3(qf_texture(u_GlossTexture, v_TexCoord)) * u_GlossIntensity) * pow(myhalf(max(specularProduct, 0.0)), u_GlossExponent);
#endif // APPLY_SPECULAR

#if defined(APPLY_BASETEX_ALPHA_ONLY) && !defined(APPLY_DRAWFLAT)
	color = min(color, myhalf4(qf_texture(u_BaseTexture, v_TexCoord).a));
#else
	myhalf4 diffuse;

#ifdef APPLY_DRAWFLAT
	myhalf n = myhalf(step(DRAWFLAT_NORMAL_STEP, abs(v_StrMatrix[2].z)));
	diffuse = myhalf4(mix(u_WallColor, u_FloorColor, n), myhalf(qf_texture(u_BaseTexture, v_TexCoord).a));
#else
	diffuse = myhalf4(qf_texture(u_BaseTexture, v_TexCoord));
#endif

#ifdef APPLY_ENTITY_DECAL

#ifdef APPLY_ENTITY_DECAL_ADD
	decal.rgb = myhalf3(qf_texture(u_EntityDecalTexture, v_TexCoord));
	diffuse.rgb += u_EntityColor.rgb * decal.rgb;
#else
	decal = myhalf4(u_EntityColor.rgb, 1.0) * myhalf4(qf_texture(u_EntityDecalTexture, v_TexCoord));
	diffuse.rgb = mix(diffuse.rgb, decal.rgb, decal.a);
#endif // APPLY_ENTITY_DECAL_ADD

#endif // APPLY_ENTITY_DECAL

color = color * diffuse;
#endif // defined(APPLY_BASETEX_ALPHA_ONLY) && !defined(APPLY_DRAWFLAT)

#ifdef APPLY_DECAL

#ifdef APPLY_DECAL_ADD
	decal.rgb = myhalf3(qf_FrontColor.rgb) * myhalf3(qf_texture(u_DecalTexture, v_TexCoord));
	color.rgb = decal.rgb + color.rgb;
	color.a = color.a * myhalf(qf_FrontColor.a);
#else
	decal = myhalf4(qf_FrontColor) * myhalf4(qf_texture(u_DecalTexture, v_TexCoord));
	color.rgb = mix(color.rgb, decal.rgb, decal.a);
#endif // APPLY_DECAL_ADD

#else

#if defined (APPLY_DIRECTIONAL_LIGHT) && defined(APPLY_DIRECTIONAL_LIGHT_MIX)
	color = color;
#else
	color = color * myhalf4(qf_FrontColor);
#endif

#endif // APPLY_DECAL

#ifdef APPLY_GREYSCALE
	color.rgb = Greyscale(color.rgb);
#endif

#if defined(APPLY_FOG) && !defined(APPLY_FOG_COLOR)
	myhalf fogDensity = FogDensity(v_FogCoord);
	color.rgb = mix(color.rgb, u_Fog.Color, fogDensity);
#endif

	qf_FragColor = vec4(color);
}

#endif // FRAGMENT_SHADER

[fragment shader]
#version 130

#define QF_GLSL_VERSION 130
#define FRAGMENT_SHADER
#if !defined(myhalf)
//#if !defined(__GLSL_CG_DATA_TYPES)
#define myhalf float
#define myhalf2 vec2
#define myhalf3 vec3
#define myhalf4 vec4
//#else
//#define myhalf half
//#define myhalf2 half2
//#define myhalf3 half3
//#define myhalf4 half4
//#endif
#endif

#if QF_GLSL_VERSION >= 130
  precision highp float;

# ifdef VERTEX_SHADER
   out myhalf4 qf_FrontColor;
#  define qf_varying out
#  define qf_attribute in
# endif
# ifdef FRAGMENT_SHADER
   in myhalf4 qf_FrontColor;
   out myhalf4	qf_FragColor;
#  define qf_varying in
#  define qf_attribute in
# endif

# define qf_texture texture
# define qf_textureCube texture
# define qf_textureLod textureLod
# define qf_textureOffset(a,b,c,d) textureOffset(a,b,ivec2(c,d))
# define qf_shadow texture
#else
# ifdef VERTEX_SHADER
#  define qf_FrontColor gl_FrontColor
#  define qf_varying varying
#  define qf_attribute attribute
# endif

# ifdef FRAGMENT_SHADER
#  define qf_FrontColor gl_Color
#  define qf_FragColor gl_FragColor
#  define qf_varying varying
#  define qf_attribute attribute
# endif
# define qf_texture texture2D
# define qf_textureLod texture2DLod
# define qf_textureCube textureCube
# define qf_textureOffset(a,b,c,d) texture2DOffset(a,b,ivec2(c,d))
# define qf_shadow shadow2D
#endif

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_TWOPI
#define M_TWOPI 6.28318530717958647692
#endif

#ifndef MAX_UNIFORM_BONES
#define MAX_UNIFORM_BONES 100
#endif

#ifndef MAX_UNIFORM_INSTANCES
#define MAX_UNIFORM_INSTANCES 40
#endif
uniform vec3 u_QF_ViewOrigin;
uniform mat3 u_QF_ViewAxis;
uniform float u_QF_MirrorSide;
uniform vec3 u_QF_EntityOrigin;
uniform float u_QF_ShaderTime;

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_TWOPI
#define M_TWOPI 6.28318530717958647692
#endif

#ifndef WAVE_SIN
float QF_WaveFunc_Sin(float x)
{
x -= floor(x);
return sin(x * M_TWOPI);
}
float QF_WaveFunc_Triangle(float x)
{
x -= floor(x);
return step(x, 0.25) * x * 4.0 + (2.0 - 4.0 * step(0.25, x) * step(x, 0.75) * x) + ((step(0.75, x) * x - 0.75) * 4.0 - 1.0);
}
float QF_WaveFunc_Square(float x)
{
x -= floor(x);
return step(x, 0.5) * 2.0 - 1.0;
}
float QF_WaveFunc_Sawtooth(float x)
{
x -= floor(x);
return x;
}
float QF_QF_WaveFunc_InverseSawtooth(float x)
{
x -= floor(x);
return 1.0 - x;
}

#define WAVE_SIN(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Sin((phase)+(time)*(freq))))
#define WAVE_TRIANGLE(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Triangle((phase)+(time)*(freq))))
#define WAVE_SQUARE(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Square((phase)+(time)*(freq))))
#define WAVE_SAWTOOTH(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_WaveFunc_Sawtooth((phase)+(time)*(freq))))
#define WAVE_INVERSESAWTOOTH(time,base,amplitude,phase,freq) (((base)+(amplitude)*QF_QF_WaveFunc_InverseSawtooth((phase)+(time)*(freq))))
#endif

#ifdef VERTEX_SHADER
attribute vec4 a_BonesIndices;
attribute vec4 a_BonesWeights;

uniform vec4 u_QF_DualQuats[MAX_UNIFORM_BONES*2];

#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

// use defines to overload the transform function

#define DUAL_QUAT_TRANSFORM_NORMALS
#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

#define DUAL_QUAT_TRANSFORM_TANGENT
#if defined(DUAL_QUAT_TRANSFORM_NORMALS)
#if defined(DUAL_QUAT_TRANSFORM_TANGENT)
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal, inout vec3 Tangent)
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position, inout vec3 Normal)
#endif
#else
void QF_VertexDualQuatsTransform(const int numWeights, inout vec4 Position)
#endif
{
int index;
vec4 Indices = a_BonesIndices;
vec4 Weights = a_BonesWeights;
vec4 Indices_2 = Indices * 2.0;
vec4 DQReal, DQDual;

index = int(Indices_2.x);
DQReal = u_QF_DualQuats[index+0];
DQDual = u_QF_DualQuats[index+1];

if (numWeights > 1)
{
DQReal *= Weights.x;
DQDual *= Weights.x;

vec4 DQReal1, DQDual1;
float scale;

index = int(Indices_2.y);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.y;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 2)
{
index = int(Indices_2.z);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.z;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;

if (numWeights > 3)
{
index = int(Indices_2.w);
DQReal1 = u_QF_DualQuats[index+0];
DQDual1 = u_QF_DualQuats[index+1];
// antipodality handling
scale = (dot(DQReal1, DQReal) < 0.0 ? -1.0 : 1.0) * Weights.w;
DQReal += DQReal1 * scale;
DQDual += DQDual1 * scale;
}
}
}

float len = length(DQReal);
DQReal /= len;
DQDual /= len;

Position.xyz = (cross(DQReal.xyz, cross(DQReal.xyz, Position.xyz) + Position.xyz*DQReal.w + DQDual.xyz) + DQDual.xyz*DQReal.w - DQReal.xyz*DQDual.w)*2.0 + Position.xyz;

#ifdef DUAL_QUAT_TRANSFORM_NORMALS
Normal = cross(DQReal.xyz, cross(DQReal.xyz, Normal) + Normal*DQReal.w)*2.0 + Normal;
#endif

#ifdef DUAL_QUAT_TRANSFORM_TANGENT
Tangent = cross(DQReal.xyz, cross(DQReal.xyz, Tangent) + Tangent*DQReal.w)*2.0 + Tangent;
#endif
}

#endif
#ifdef VERTEX_SHADER
#ifdef APPLY_INSTANCED_ATTRIB_TRASNFORMS
attribute vec4 a_InstanceQuat;
attribute vec4 a_InstancePosAndScale;
#elif defined(GL_ARB_draw_instanced)

uniform vec4 u_QF_InstancePoints[MAX_UNIFORM_INSTANCES*2];

#define a_InstanceQuat u_QF_InstancePoints[gl_InstanceID*2]
#define a_InstancePosAndScale u_QF_InstancePoints[gl_InstanceID*2+1]
#else
uniform vec4 u_QF_InstancePoints[2];
#define a_InstanceQuat u_QF_InstancePoints[0]
#define a_InstancePosAndScale u_QF_InstancePoints[1]
#endif

void QF_InstancedTransform(inout vec4 Position, inout vec3 Normal)
{
Position.xyz = (cross(a_InstanceQuat.xyz, cross(a_InstanceQuat.xyz, Position.xyz) + Position.xyz*a_InstanceQuat.w)*2.0 + Position.xyz) *
 a_InstancePosAndScale.w + a_InstancePosAndScale.xyz;
Normal = cross(a_InstanceQuat.xyz, cross(a_InstanceQuat.xyz, Normal) + Normal*a_InstanceQuat.w)*2.0 + Normal;
}

#endif
#define QF_LatLong2Norm(ll) vec3(cos((ll).y) * sin((ll).x), sin((ll).y) * sin((ll).x), cos((ll).x))

#define APPLY_RGB_CONST
#define APPLY_ALPHA_CONST
#define NUM_DLIGHTS 8
#define NUM_LIGHTMAPS 1
#define APPLY_SPECULAR
#define APPLY_RELIEFMAPPING

#define DRAWFLAT_NORMAL_STEP	0.5		// floor or ceiling if < abs(normal.z)
uniform mat4 u_ModelViewMatrix;
uniform mat4 u_ModelViewProjectionMatrix;

uniform float u_ShaderTime;

uniform vec3 u_ViewOrigin;
uniform mat3 u_ViewAxis;

uniform vec3 u_EntityDist;
uniform vec3 u_EntityOrigin;
uniform myhalf4 u_EntityColor;

uniform myhalf4 u_ConstColor;
uniform myhalf4 u_RGBGenFuncArgs, u_AlphaGenFuncArgs;
uniform myhalf3 u_LightstyleColor[4]; // lightstyle colors

uniform myhalf3 u_LightAmbient;
uniform myhalf3 u_LightDiffuse;
uniform vec3 u_LightDir;

uniform myhalf2 u_BlendMix;

uniform vec2 u_TextureMatrix[3];
#define TextureMatrix2x3Mul(m2x3,tc) vec2(dot((m2x3)[0],(tc)) + (m2x3)[2][0], dot((m2x3)[1],(tc)) + (m2x3)[2][1])

uniform float u_MirrorSide;

uniform float u_ZNear, u_ZFar;

uniform ivec4 u_Viewport; // x, y, width, height

uniform vec4 u_TextureParams;

uniform myhalf u_SoftParticlesScale;


#if defined(NUM_DLIGHTS)
#if defined(FRAGMENT_SHADER)
#if defined(NUM_DLIGHTS)

struct DynamicLight
{
	myhalf Radius;
	vec3 Position;
	myhalf3 Diffuse;
};

uniform DynamicLight u_DynamicLights[NUM_DLIGHTS];
uniform int u_NumDynamicLights;
#ifdef DLIGHTS_SURFACE_NORMAL_IN
myhalf3 DynamicLightsSummaryColor(in vec3 Position, in myhalf3 surfaceNormalModelspace)
#else
myhalf3 DynamicLightsSummaryColor(in vec3 Position)
#endif
{
	myhalf3 Color = myhalf3(0.0);

#if QF_GLSL_VERSION >= 330
	for (int i = 0; i < u_NumDynamicLights; i++)
#else
	for (int i = 0; i < NUM_DLIGHTS; i++)
#endif
	{
		myhalf3 STR = myhalf3(u_DynamicLights[i].Position - Position);
		myhalf distance = length(STR);
		myhalf falloff = clamp(1.0 - distance / u_DynamicLights[i].Radius, 0.0, 1.0);

		falloff *= falloff;

		#ifdef DLIGHTS_SURFACE_NORMAL_IN
		falloff *= myhalf(max(dot(normalize(STR), surfaceNormalModelspace), 0.0));
		#endif

		Color += falloff * u_DynamicLights[i].Diffuse;
	}

	return Color;
}


#define DLIGHTS_SURFACE_NORMAL_IN
#ifdef DLIGHTS_SURFACE_NORMAL_IN
myhalf3 DynamicLightsSummaryColor(in vec3 Position, in myhalf3 surfaceNormalModelspace)
#else
myhalf3 DynamicLightsSummaryColor(in vec3 Position)
#endif
{
	myhalf3 Color = myhalf3(0.0);

#if QF_GLSL_VERSION >= 330
	for (int i = 0; i < u_NumDynamicLights; i++)
#else
	for (int i = 0; i < NUM_DLIGHTS; i++)
#endif
	{
		myhalf3 STR = myhalf3(u_DynamicLights[i].Position - Position);
		myhalf distance = length(STR);
		myhalf falloff = clamp(1.0 - distance / u_DynamicLights[i].Radius, 0.0, 1.0);

		falloff *= falloff;

		#ifdef DLIGHTS_SURFACE_NORMAL_IN
		falloff *= myhalf(max(dot(normalize(STR), surfaceNormalModelspace), 0.0));
		#endif

		Color += falloff * u_DynamicLights[i].Diffuse;
	}

	return Color;
}


#endif

#endif
#endif

#ifdef APPLY_FOG
struct Fog
{
	float EyeDist;
	vec4 EyePlane, Plane;
	myhalf3 Color;
	float Scale;
};

uniform Fog u_Fog;

#define FOG_TEXCOORD_STEP 1.0/256.0

#define FogDensity(coord) sqrt(clamp((coord)[0],0.0,1.0))*step(FOG_TEXCOORD_STEP,(coord)[1])

#define FOG_GEN_OUTPUT_COLOR
#if defined(FOG_GEN_OUTPUT_COLOR)
void FogGen(in vec4 Position, inout myhalf4 outColor, in myhalf2 blendMix)
#elif defined(FOG_GEN_OUTPUT_TEXCOORDS)
void FogGen(in vec4 Position, inout vec2 outTexCoord)
#endif
{
	// side = vec2(inside, outside)
	myhalf2 side = myhalf2(step(u_Fog.EyeDist, 0.0), step(0.0, u_Fog.EyeDist));
	myhalf FDist = dot(Position.xyz, u_Fog.EyePlane.xyz) - u_Fog.EyePlane.w;
	myhalf FVdist = dot(Position.xyz, u_Fog.Plane.xyz) - u_Fog.Plane.w;
	myhalf FogDistScale = FVdist / (FVdist - u_Fog.EyeDist);

#if defined(FOG_GEN_OUTPUT_COLOR)
	myhalf FogDist = FDist * dot(side, myhalf2(1.0, FogDistScale));
	myhalf FogScale = myhalf(clamp(1.0 - FogDist * u_Fog.Scale, 0.0, 1.0));
	outColor *= mix(myhalf4(1.0), myhalf4(FogScale), blendMix.xxxy);
#endif

#if defined(FOG_GEN_OUTPUT_TEXCOORDS)
	myhalf FogS = FDist * dot(side, myhalf2(1.0, step(FVdist, 0.0) * FogDistScale));
	myhalf FogT = -FVdist;
	outTexCoord = vec2(FogS * u_Fog.Scale, FogT * u_Fog.Scale + 1.5*FOG_TEXCOORD_STEP);
#endif
}


#undef FOG_GEN_OUTPUT_COLOR
#define FOG_GEN_OUTPUT_TEXCOORDS
#if defined(FOG_GEN_OUTPUT_COLOR)
void FogGen(in vec4 Position, inout myhalf4 outColor, in myhalf2 blendMix)
#elif defined(FOG_GEN_OUTPUT_TEXCOORDS)
void FogGen(in vec4 Position, inout vec2 outTexCoord)
#endif
{
	// side = vec2(inside, outside)
	myhalf2 side = myhalf2(step(u_Fog.EyeDist, 0.0), step(0.0, u_Fog.EyeDist));
	myhalf FDist = dot(Position.xyz, u_Fog.EyePlane.xyz) - u_Fog.EyePlane.w;
	myhalf FVdist = dot(Position.xyz, u_Fog.Plane.xyz) - u_Fog.Plane.w;
	myhalf FogDistScale = FVdist / (FVdist - u_Fog.EyeDist);

#if defined(FOG_GEN_OUTPUT_COLOR)
	myhalf FogDist = FDist * dot(side, myhalf2(1.0, FogDistScale));
	myhalf FogScale = myhalf(clamp(1.0 - FogDist * u_Fog.Scale, 0.0, 1.0));
	outColor *= mix(myhalf4(1.0), myhalf4(FogScale), blendMix.xxxy);
#endif

#if defined(FOG_GEN_OUTPUT_TEXCOORDS)
	myhalf FogS = FDist * dot(side, myhalf2(1.0, step(FVdist, 0.0) * FogDistScale));
	myhalf FogT = -FVdist;
	outTexCoord = vec2(FogS * u_Fog.Scale, FogT * u_Fog.Scale + 1.5*FOG_TEXCOORD_STEP);
#endif
}

#endif
#ifdef APPLY_GREYSCALE
myhalf3 Greyscale(myhalf3 color)
{
	return myhalf3(dot(color, myhalf3(0.299, 0.587, 0.114)));
}

#endif

qf_varying vec2 v_TexCoord;
#ifdef NUM_LIGHTMAPS
qf_varying vec2 v_LightmapTexCoord[NUM_LIGHTMAPS];
#endif

qf_varying vec3 v_Position;

#if defined(APPLY_SPECULAR) || defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
qf_varying vec3 v_EyeVector;
#endif

qf_varying mat3 v_StrMatrix; // directions of S/T/R texcoords (tangent, binormal, normal)

#if defined(APPLY_FOG) && !defined(APPLY_FOG_COLOR)
qf_varying vec2 v_FogCoord;
#endif

#ifdef VERTEX_SHADER
#ifdef VERTEX_SHADER
qf_attribute vec4 a_Position;
qf_attribute vec4 a_SVector;
qf_attribute vec4 a_Normal;
qf_attribute vec4 a_Color;
qf_attribute vec2 a_TexCoord;
qf_attribute vec2 a_LightmapCoord0, a_LightmapCoord1, a_LightmapCoord2, a_LightmapCoord3;
#endif
void TransformVerts(inout vec4 Position, inout vec3 Normal, inout vec2 TexCoord)
{
#ifdef NUM_BONE_INFLUENCES
	QF_VertexDualQuatsTransform(NUM_BONE_INFLUENCES, Position, Normal);
#endif

#ifdef APPLY_DEFORMVERTS
	QF_DeformVerts(Position, Normal, TexCoord);
#endif

#ifdef APPLY_INSTANCED_TRANSFORMS
	QF_InstancedTransform(Position, Normal);
#endif
}

void TransformVerts(inout vec4 Position, inout vec3 Normal, inout vec3 Tangent, inout vec2 TexCoord)
{
#ifdef NUM_BONE_INFLUENCES
	QF_VertexDualQuatsTransform(NUM_BONE_INFLUENCES, Position, Normal, Tangent);
#endif

#ifdef APPLY_DEFORMVERTS
	QF_DeformVerts(Position, Normal, TexCoord);
#endif

#ifdef APPLY_INSTANCED_TRANSFORMS
	QF_InstancedTransform(Position, Normal);
#endif
}
myhalf4 VertexRGBGen(in vec4 Position, in vec3 Normal, in myhalf4 VertexColor)
{
#if defined(APPLY_RGB_DISTANCERAMP) || defined(APPLY_ALPHA_DISTANCERAMP)
#define DISTANCERAMP(x1,x2,y1,y2) ((y2 - y1) / (x2 - x1) * (clamp(myhalf(dot(u_EntityDist - Position.xyz, Normal)),0.0,x2) - x1) + y1)
#endif

#if defined(APPLY_RGB_CONST) && defined(APPLY_ALPHA_CONST)
	myhalf4 Color = u_ConstColor;
#else
	myhalf4 Color = myhalf4(1.0);

#if defined(APPLY_RGB_CONST)
	Color.rgb = u_ConstColor.rgb;
#elif defined(APPLY_RGB_VERTEX)
	Color.rgb = VertexColor.rgb;
#elif defined(APPLY_RGB_ONE_MINUS_VERTEX)
	Color.rgb = myhalf3(1.0) - VertexColor.rgb;
#elif defined(APPLY_RGB_GEN_DIFFUSELIGHT)
	Color.rgb = myhalf3(u_LightAmbient + max(dot(u_LightDir, Normal), 0.0) * u_LightDiffuse);
#endif

#if defined(APPLY_ALPHA_CONST)
	Color.a = u_ConstColor.a;
#elif defined(APPLY_ALPHA_VERTEX)
	Color.a = VertexColor.a;
#elif defined(APPLY_ALPHA_ONE_MINUS_VERTEX)
	Color.a = 1.0 - VertexColor.a;
#endif

#endif

#ifdef APPLY_RGB_DISTANCERAMP
	Color.rgb *= DISTANCERAMP(u_RGBGenFuncArgs[2], u_RGBGenFuncArgs[3], u_RGBGenFuncArgs[0], u_RGBGenFuncArgs[1]);
#endif

#ifdef APPLY_ALPHA_DISTANCERAMP
	Color.a *= DISTANCERAMP(u_AlphaGenFuncArgs[2], u_AlphaGenFuncArgs[3], u_AlphaGenFuncArgs[0], u_AlphaGenFuncArgs[1]);
#endif

	return Color;
#if defined(APPLY_RGB_DISTANCERAMP) || defined(APPLY_ALPHA_DISTANCERAMP)
#undef DISTANCERAMP
#endif
}


void main()
{
	vec4 Position = a_Position;
	vec3 Normal = a_Normal.xyz;
	myhalf4 inColor = myhalf4(a_Color);
	vec2 TexCoord = a_TexCoord;
	vec3 Tangent = a_SVector.xyz;
	float TangentDir = a_SVector.w;

	TransformVerts(Position, Normal, Tangent, TexCoord);

	myhalf4 outColor = VertexRGBGen(Position, Normal, inColor);

#ifdef APPLY_FOG
#if defined(APPLY_FOG_COLOR)
	FogGen(Position, outColor, u_BlendMix);
#else
	FogGen(Position, v_FogCoord);
#endif
#endif // APPLY_FOG

	qf_FrontColor = vec4(outColor);

	v_TexCoord = TextureMatrix2x3Mul(u_TextureMatrix, TexCoord);

#ifdef NUM_LIGHTMAPS
	v_LightmapTexCoord[0] = a_LightmapCoord0;
#if NUM_LIGHTMAPS >= 2
	v_LightmapTexCoord[1] = a_LightmapCoord1;
#if NUM_LIGHTMAPS >= 3
	v_LightmapTexCoord[2] = a_LightmapCoord2;
#if NUM_LIGHTMAPS >= 4
	v_LightmapTexCoord[3] = a_LightmapCoord3;
#endif // NUM_LIGHTMAPS >= 4
#endif // NUM_LIGHTMAPS >= 3
#endif // NUM_LIGHTMAPS >= 2
#endif // NUM_LIGHTMAPS

	v_StrMatrix[0] = Tangent;
	v_StrMatrix[2] = Normal;
	v_StrMatrix[1] = TangentDir * cross(Normal, Tangent);

#if defined(APPLY_SPECULAR) || defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
	vec3 EyeVectorWorld = u_ViewOrigin - Position.xyz;
	v_EyeVector = EyeVectorWorld * v_StrMatrix;
#endif

	v_Position = Position.xyz;
	gl_Position = u_ModelViewProjectionMatrix * Position;
}

#endif // VERTEX_SHADER

#ifdef FRAGMENT_SHADER
// Fragment shader

#ifdef NUM_LIGHTMAPS
uniform float u_DeluxemapOffset[NUM_LIGHTMAPS]; // s-offset for v_LightmapTexCoord
uniform sampler2D u_LightmapTexture[NUM_LIGHTMAPS];
#endif

uniform sampler2D u_BaseTexture;
uniform sampler2D u_NormalmapTexture;
uniform sampler2D u_GlossTexture;
#ifdef APPLY_DECAL
uniform sampler2D u_DecalTexture;
#endif

#ifdef APPLY_ENTITY_DECAL
uniform sampler2D u_EntityDecalTexture;
#endif

#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
uniform float u_OffsetMappingScale;
#endif

#ifdef APPLY_DRAWFLAT
uniform myhalf3 u_WallColor;
uniform myhalf3 u_FloorColor;
#endif

uniform myhalf u_GlossIntensity; // gloss scaling factor
uniform myhalf u_GlossExponent; // gloss exponent factor

#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
// The following reliefmapping and offsetmapping routine was taken from DarkPlaces
// The credit goes to LordHavoc (as always)
vec2 OffsetMapping(vec2 TexCoord)
{
#ifdef APPLY_RELIEFMAPPING
	// 14 sample relief mapping: linear search and then binary search
	// this basically steps forward a small amount repeatedly until it finds
	// itself inside solid, then jitters forward and back using decreasing
	// amounts to find the impact
	//vec3 OffsetVector = vec3(v_EyeVector.xy * ((1.0 / v_EyeVector.z) * u_OffsetMappingScale) * vec2(-1, 1), -1);
	//vec3 OffsetVector = vec3(normalize(v_EyeVector.xy) * u_OffsetMappingScale * vec2(-1, 1), -1);
	vec3 OffsetVector = vec3(normalize(v_EyeVector).xy * u_OffsetMappingScale * vec2(-1, 1), -1);
	vec3 RT = vec3(TexCoord, 1);
	OffsetVector *= 0.1;
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector *  step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z)          - 0.5);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.5    - 0.25);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.25   - 0.125);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.125  - 0.0625);
	RT += OffsetVector * (step(qf_texture(u_NormalmapTexture, RT.xy).a, RT.z) * 0.0625 - 0.03125);
	return RT.xy;
#else
	// 2 sample offset mapping (only 2 samples because of ATI Radeon 9500-9800/X300 limits)
	// this basically moves forward the full distance, and then backs up based
	// on height of samples
	//vec2 OffsetVector = vec2(v_EyeVector.xy * ((1.0 / v_EyeVector.z) * u_OffsetMappingScale) * vec2(-1, 1));
	//vec2 OffsetVector = vec2(normalize(v_EyeVector.xy) * u_OffsetMappingScale * vec2(-1, 1));
	vec2 OffsetVector = vec2(normalize(v_EyeVector).xy * u_OffsetMappingScale * vec2(-1, 1));
	TexCoord += OffsetVector;
	OffsetVector *= 0.5;
	TexCoord -= OffsetVector * qf_texture(u_NormalmapTexture, TexCoord).a;
	TexCoord -= OffsetVector * qf_texture(u_NormalmapTexture, TexCoord).a;
	return TexCoord;
#endif // APPLY_RELIEFMAPPING
}
#endif // defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)

void main()
{
#if defined(APPLY_OFFSETMAPPING) || defined(APPLY_RELIEFMAPPING)
	// apply offsetmapping
	vec2 TexCoordOffset = OffsetMapping(v_TexCoord);
#define v_TexCoord TexCoordOffset
#endif

	myhalf3 surfaceNormal;
	myhalf3 surfaceNormalModelspace;
	myhalf3 diffuseNormalModelspace;
	float diffuseProduct;

#ifdef APPLY_CELSHADING
	int lightcell;
	float diffuseProductPositive;
	float diffuseProductNegative;
	float hardShadow;
#endif

	myhalf3 weightedDiffuseNormalModelspace;

#if !defined(APPLY_DIRECTIONAL_LIGHT) && !defined(NUM_LIGHTMAPS)
	myhalf4 color = myhalf4 (1.0, 1.0, 1.0, 1.0);
#else
	myhalf4 color = myhalf4 (0.0, 0.0, 0.0, 1.0);
#endif

	myhalf4 decal = myhalf4 (0.0, 0.0, 0.0, 1.0);

	// get the surface normal
	surfaceNormal = normalize(myhalf3(qf_texture (u_NormalmapTexture, v_TexCoord)) - myhalf3 (0.5));
	surfaceNormalModelspace = normalize(v_StrMatrix * surfaceNormal);

#ifdef APPLY_DIRECTIONAL_LIGHT

#ifdef APPLY_DIRECTIONAL_LIGHT_FROM_NORMAL
	diffuseNormalModelspace = v_StrMatrix[2];
#else
	diffuseNormalModelspace = u_LightDir;
#endif // APPLY_DIRECTIONAL_LIGHT_FROM_NORMAL

	weightedDiffuseNormalModelspace = diffuseNormalModelspace;

#ifdef APPLY_CELSHADING
	hardShadow = 0.0;
#ifdef APPLY_HALFLAMBERT
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	diffuseProductPositive = float ( clamp(diffuseProduct, 0.0, 1.0) * 0.5 + 0.5 );
	diffuseProductPositive *= diffuseProductPositive;
	diffuseProductNegative = float ( clamp(diffuseProduct, -1.0, 0.0) * 0.5 - 0.5 );
	diffuseProductNegative *= diffuseProductNegative;
	diffuseProductNegative -= 0.25;
	diffuseProduct = diffuseProductPositive;
#else
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	diffuseProductPositive = max (diffuseProduct, 0.0);
	diffuseProductNegative = (-min (diffuseProduct, 0.0) - 0.3);
#endif // APPLY_HALFLAMBERT

	// smooth the hard shadow edge
	lightcell = int(max(diffuseProduct + 0.1, 0.0) * 2.0);
	hardShadow += float(lightcell);

	lightcell = int(max(diffuseProduct + 0.055, 0.0) * 2.0);
	hardShadow += float(lightcell);

	lightcell = int(diffuseProductPositive * 2.0);
	hardShadow += float(lightcell);

	color.rgb += myhalf(0.6 + hardShadow * 0.3333333333 * 0.27 + diffuseProductPositive * 0.14);

	// backlight
	lightcell = int (diffuseProductNegative * 2.0);
	color.rgb += myhalf (float(lightcell) * 0.085 + diffuseProductNegative * 0.085);
#else

#ifdef APPLY_HALFLAMBERT
	diffuseProduct = float ( clamp(dot (surfaceNormalModelspace, diffuseNormalModelspace), 0.0, 1.0) * 0.5 + 0.5 );
	diffuseProduct *= diffuseProduct;
#else
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
#endif // APPLY_HALFLAMBERT

#ifdef APPLY_DIRECTIONAL_LIGHT_MIX
	color.rgb += qf_FrontColor.rgb;
#else
	color.rgb += u_LightDiffuse.rgb * myhalf(max (diffuseProduct, 0.0)) + u_LightAmbient;
#endif

#endif // APPLY_CELSHADING

#endif // APPLY_DIRECTIONAL_LIGHT

	// deluxemapping using light vectors in modelspace

#ifdef NUM_LIGHTMAPS
	// get light normal
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture(u_LightmapTexture[0], vec2(v_LightmapTexCoord[0].s+u_DeluxemapOffset[0],v_LightmapTexCoord[0].t))) - myhalf3 (0.5));
	// calculate directional shading
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));

#ifdef APPLY_FBLIGHTMAP
	weightedDiffuseNormalModelspace = diffuseNormalModelspace;
	// apply lightmap color
	color.rgb += myhalf3 (max (diffuseProduct, 0.0) * myhalf3 (qf_texture (u_LightmapTexture[0], v_LightmapTexCoord[0])));
#else
#define NORMALIZE_DIFFUSE_NORMAL
	weightedDiffuseNormalModelspace = u_LightstyleColor[0] * diffuseNormalModelspace;
	// apply lightmap color
	color.rgb += u_LightstyleColor[0] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[0], v_LightmapTexCoord[0]));
#endif // APPLY_FBLIGHTMAP

#ifdef APPLY_AMBIENT_COMPENSATION
	// compensate for ambient lighting
	color.rgb += myhalf((1.0 - max (diffuseProduct, 0.0))) * u_LightAmbient;
#endif

#if NUM_LIGHTMAPS >= 2
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[1], vec2(v_LightmapTexCoord[1].s+u_DeluxemapOffset[1],v_LightmapTexCoord[1].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[1] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[1] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[1], v_LightmapTexCoord[1]));
#if NUM_LIGHTMAPS >= 3
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[2], vec2(v_LightmapTexCoord[2].s+u_DeluxemapOffset[2],v_LightmapTexCoord[2].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[2] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[2] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[2], v_LightmapTexCoord[2]));
#if NUM_LIGHTMAPS >= 4
	diffuseNormalModelspace = normalize(myhalf3 (qf_texture (u_LightmapTexture[3], vec2(v_LightmapTexCoord[3].s+u_DeluxemapOffset[3],v_LightmapTexCoord[3].t))) - myhalf3 (0.5));
	diffuseProduct = float (dot (surfaceNormalModelspace, diffuseNormalModelspace));
	weightedDiffuseNormalModelspace += u_LightstyleColor[3] * diffuseNormalModelspace;
	color.rgb += u_LightstyleColor[3] * myhalf(max (diffuseProduct, 0.0)) * myhalf3 (qf_texture(u_LightmapTexture[3], v_LightmapTexCoord[3]));
#endif // NUM_LIGHTMAPS >= 4
#endif // NUM_LIGHTMAPS >= 3
#endif // NUM_LIGHTMAPS >= 2
#endif // NUM_LIGHTMAPS

#if defined(NUM_DLIGHTS)
	color.rgb += DynamicLightsSummaryColor(v_Position, surfaceNormalModelspace);
#endif

#ifdef APPLY_SPECULAR

#ifdef NORMALIZE_DIFFUSE_NORMAL
	myhalf3 specularNormal = normalize (myhalf3 (normalize (weightedDiffuseNormalModelspace)) + myhalf3 (normalize (u_EntityDist - v_Position)));
#else
	myhalf3 specularNormal = normalize (weightedDiffuseNormalModelspace + myhalf3 (normalize (u_EntityDist - v_Position)));
#endif

	myhalf specularProduct = myhalf(dot (surfaceNormalModelspace, specularNormal));
	color.rgb += (myhalf3(qf_texture(u_GlossTexture, v_TexCoord)) * u_GlossIntensity) * pow(myhalf(max(specularProduct, 0.0)), u_GlossExponent);
#endif // APPLY_SPECULAR

#if defined(APPLY_BASETEX_ALPHA_ONLY) && !defined(APPLY_DRAWFLAT)
	color = min(color, myhalf4(qf_texture(u_BaseTexture, v_TexCoord).a));
#else
	myhalf4 diffuse;

#ifdef APPLY_DRAWFLAT
	myhalf n = myhalf(step(DRAWFLAT_NORMAL_STEP, abs(v_StrMatrix[2].z)));
	diffuse = myhalf4(mix(u_WallColor, u_FloorColor, n), myhalf(qf_texture(u_BaseTexture, v_TexCoord).a));
#else
	diffuse = myhalf4(qf_texture(u_BaseTexture, v_TexCoord));
#endif

#ifdef APPLY_ENTITY_DECAL

#ifdef APPLY_ENTITY_DECAL_ADD
	decal.rgb = myhalf3(qf_texture(u_EntityDecalTexture, v_TexCoord));
	diffuse.rgb += u_EntityColor.rgb * decal.rgb;
#else
	decal = myhalf4(u_EntityColor.rgb, 1.0) * myhalf4(qf_texture(u_EntityDecalTexture, v_TexCoord));
	diffuse.rgb = mix(diffuse.rgb, decal.rgb, decal.a);
#endif // APPLY_ENTITY_DECAL_ADD

#endif // APPLY_ENTITY_DECAL

color = color * diffuse;
#endif // defined(APPLY_BASETEX_ALPHA_ONLY) && !defined(APPLY_DRAWFLAT)

#ifdef APPLY_DECAL

#ifdef APPLY_DECAL_ADD
	decal.rgb = myhalf3(qf_FrontColor.rgb) * myhalf3(qf_texture(u_DecalTexture, v_TexCoord));
	color.rgb = decal.rgb + color.rgb;
	color.a = color.a * myhalf(qf_FrontColor.a);
#else
	decal = myhalf4(qf_FrontColor) * myhalf4(qf_texture(u_DecalTexture, v_TexCoord));
	color.rgb = mix(color.rgb, decal.rgb, decal.a);
#endif // APPLY_DECAL_ADD

#else

#if defined (APPLY_DIRECTIONAL_LIGHT) && defined(APPLY_DIRECTIONAL_LIGHT_MIX)
	color = color;
#else
	color = color * myhalf4(qf_FrontColor);
#endif

#endif // APPLY_DECAL

#ifdef APPLY_GREYSCALE
	color.rgb = Greyscale(color.rgb);
#endif

#if defined(APPLY_FOG) && !defined(APPLY_FOG_COLOR)
	myhalf fogDensity = FogDensity(v_FogCoord);
	color.rgb = mix(color.rgb, u_Fog.Color, fogDensity);
#endif

	qf_FragColor = vec4(color);
}

#endif // FRAGMENT_SHADER