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// Copyright 2010-2024 JogAmp Community. All rights reserved.
#ifdef USE_FRUSTUM_CLIPPING
if( isOutsideMvFrustum(gcv_ClipCoord) ) {
#if USE_DISCARD
discard; // discard freezes NV tegra2 compiler
#else
mgl_FragColor = vec4(0);
#endif
} else
#endif
if( gcv_CurveParam.x == 0.0 && gcv_CurveParam.y == 0.0 ) {
// pass-1: Lines
#if defined(USE_COLOR_TEXTURE) && defined(USE_COLOR_CHANNEL)
vec4 t = clip_coord(gcuTexture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st), gcu_ColorTexClearCol, gcv_ColorTexCoord, vec2(0), gcu_ColorTexBBox[2]);
mgl_FragColor = vec4( mix( t.rgb * gcu_ColorStatic.rgb, gcv_Color.rgb, gcv_Color.a ),
mix( t.a * gcu_ColorStatic.a, 1, gcv_Color.a) );
#elif defined(USE_COLOR_TEXTURE)
mgl_FragColor = clip_coord(gcuTexture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st), gcu_ColorTexClearCol, gcv_ColorTexCoord, vec2(0), gcu_ColorTexBBox[2])
* gcu_ColorStatic;
#elif defined(USE_COLOR_CHANNEL)
mgl_FragColor = gcv_Color * gcu_ColorStatic;
#else
mgl_FragColor = gcu_ColorStatic;
#endif
} else {
// pass-1: curves
vec2 rtex = vec2( abs(gcv_CurveParam.x), abs(gcv_CurveParam.y) - 0.1 );
vec2 dtx = dFdx(rtex);
vec2 dty = dFdy(rtex);
vec2 f = vec2((dtx.y - dtx.x + 2.0*rtex.x*dtx.x), (dty.y - dty.x + 2.0*rtex.x*dty.x));
float position = rtex.y - (rtex.x * (1.0 - rtex.x));
float a = clamp(0.5 - ( position/length(f) ) * sign(gcv_CurveParam.y), 0.0, 1.0);
#if defined(USE_COLOR_TEXTURE) && defined(USE_COLOR_CHANNEL)
vec4 t = clip_coord(gcuTexture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st), gcu_ColorTexClearCol, gcv_ColorTexCoord, vec2(0), gcu_ColorTexBBox[2]);
mgl_FragColor = vec4( mix( t.rgb * gcu_ColorStatic.rgb, gcv_Color.rgb, gcv_Color.a ),
a * mix( t.a * gcu_ColorStatic.a, 1, gcv_Color.a) );
#elif defined(USE_COLOR_TEXTURE)
vec4 t = clip_coord(gcuTexture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st), gcu_ColorTexClearCol, gcv_ColorTexCoord, vec2(0), gcu_ColorTexBBox[2]);
mgl_FragColor = vec4(t.rgb * gcu_ColorStatic.rgb, t.a * gcu_ColorStatic.a * a);
#elif defined(USE_COLOR_CHANNEL)
mgl_FragColor = vec4(gcv_Color.rgb * gcu_ColorStatic.rgb, gcv_Color.a * gcu_ColorStatic.a * a);
#else
mgl_FragColor = vec4(gcu_ColorStatic.rgb, gcu_ColorStatic.a * a);
#endif
}
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