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in vec2 uv_interp;
#ifdef TEXTURE_PAINT_MASK
in vec2 masking_uv_interp;
#endif
out vec4 fragColor;
uniform sampler2D image;
uniform float alpha = 1.0;
uniform bool nearestInterp;
#ifdef TEXTURE_PAINT_MASK
uniform sampler2D maskingImage;
uniform vec3 maskingColor;
uniform bool maskingInvertStencil;
#endif
void main()
{
vec2 uv = uv_interp;
if (nearestInterp) {
vec2 tex_size = vec2(textureSize(image, 0).xy);
uv = (floor(uv_interp * tex_size) + 0.5) / tex_size;
}
vec4 color = texture(image, uv);
color.a *= alpha;
#ifdef TEXTURE_PAINT_MASK
vec4 mask = vec4(texture(maskingImage, masking_uv_interp).rgb, 1.0);
if (maskingInvertStencil) {
mask.rgb = 1.0 - mask.rgb;
}
float mask_step = smoothstep(0, 3.0, mask.r + mask.g + mask.b);
mask.rgb *= maskingColor;
color = mix(color, mask, mask_step);
#endif
fragColor = color;
}
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