#version 300 es
precision mediump float;

in vec2 vertTexCoord;
in vec4 vertColor;
in float vertTextureIndex;

uniform sampler2D colorTextures[8];

out vec4 fragColor;

void main() {
	fragColor = vec4(0, 0, 0, 0);
	fragColor += texture(colorTextures[0], vertTexCoord) * (step(-0.5, vertTextureIndex) - step(0.5, vertTextureIndex));
	fragColor += texture(colorTextures[1], vertTexCoord) * (step( 0.5, vertTextureIndex) - step(1.5, vertTextureIndex));
	fragColor += texture(colorTextures[2], vertTexCoord) * (step( 1.5, vertTextureIndex) - step(2.5, vertTextureIndex));
	fragColor += texture(colorTextures[3], vertTexCoord) * (step( 2.5, vertTextureIndex) - step(3.5, vertTextureIndex));
	fragColor += texture(colorTextures[4], vertTexCoord) * (step( 3.5, vertTextureIndex) - step(4.5, vertTextureIndex));
	fragColor += texture(colorTextures[5], vertTexCoord) * (step( 4.5, vertTextureIndex) - step(5.5, vertTextureIndex));
	fragColor += texture(colorTextures[6], vertTexCoord) * (step( 5.5, vertTextureIndex) - step(6.5, vertTextureIndex));
	fragColor += texture(colorTextures[7], vertTexCoord) * (step( 6.5, vertTextureIndex) - step(7.5, vertTextureIndex));
	fragColor *= vertColor;
}