///////////////////////////////////////////////////////////////////////////////
//
//      ##  ######
//       ######  ###
//  ## ###############        Shark 3D Engine (www.shark3d.com)
//   ########## # # #
//    ########                Copyright (c) 1996-2006 Spinor GmbH.
//   ######### # # #          All rights reserved.
//  ##   ##########
//      ##
//
///////////////////////////////////////////////////////////////////////////////

@include "levelutil/shader/prog/ogl_glsl/" \
    "include_stddef_ogl_glsl_vs1x0.s3d_shadercode_run"

///////////////////////////////////////////////////////////////////////////////

S3D_BONE_DECL_STD(boneWgh, boneSubscr)
S3D_MATBONE_DECL_STD(matBone)

uniform vec4 lightCenRange;
@ifdef S3D_LIGHT_BRIGHT
uniform mat4 lightBrightMat;
@endif
@ifdef S3D_LIGHT_PROJ
uniform mat4 lightProjMat;
@endif
@ifdef S3D_LIGHT_SHMAP
uniform mat4 lightShmapMat;
@endif

///////////////////////////////////////////////////////////////////////////////

@define S3D_NORMALIZE(v) normalize(v)
//@define S3D_NORMALIZE(v) (v)

///////////////////////////////////////////////////////////////////////////////

void main(void)
{
    S3D_BONE_TRANSF_STD(matBoneFinal, matBone, boneWgh, boneSubscr);

    vec4 posView = matBoneFinal * gl_Vertex;
    vec3 normalView = (matBoneFinal * vec4(gl_Normal, 0.0)).xyz;
    vec3 tangentUObj = S3D_NORMALIZE(gl_MultiTexCoord1.xyz);
    vec3 tangentVObj = S3D_NORMALIZE(gl_MultiTexCoord2.xyz);
    vec3 tangentUView = (matBoneFinal * vec4(tangentUObj, 0)).xyz;
    vec3 tangentVView = (matBoneFinal * vec4(tangentVObj, 0)).xyz;

    gl_Position = gl_ProjectionMatrix * posView;
    gl_TexCoord[0] = gl_MultiTexCoord0;

    gl_FogFragCoord = posView.z / posView.w;

    vec3 camToVertView = posView.xyz;
    vec3 vertToLightView = lightCenRange.xyz - camToVertView;    
    vec3 vertToLightDirView = S3D_NORMALIZE(vertToLightView);
    vec3 halfDirView = S3D_NORMALIZE(vertToLightDirView - camToVertView);
    // ATI workaround: Don't use x component of gl_TexCoord[2]:
    s3d_calcBump(
            gl_TexCoord[1].xyz, gl_TexCoord[2].yzw,
            normalView, vertToLightDirView, halfDirView,
            tangentUView, tangentVView);
    // Lightrange-factor: 1 - (lightpos - surfacepos)^2 / range^2
    gl_TexCoord[3].xyz = vertToLightView / lightCenRange.w;

@ifdef S3D_PARALLAX_MAPPING
    gl_TexCoord[4].x = dot(tangentUView, camToVertView);
    gl_TexCoord[4].y = dot(tangentVView, camToVertView);
    gl_TexCoord[4].z = dot(normalView, camToVertView);
@endif

@ifdef S3D_LIGHT_BRIGHT
    gl_TexCoord[5] = lightBrightMat * posView;
    gl_TexCoord[6] = gl_Position;
@endif

@ifdef S3D_LIGHT_PROJ
    gl_TexCoord[5] = lightProjMat * posView;
@endif    
@ifdef S3D_LIGHT_SHMAP
    gl_TexCoord[6] = lightShmapMat * posView;
@endif
}

///////////////////////////////////////////////////////////////////////////////