#version 150

in vec2 inPosition;
in vec2 inTexCoord;
in vec4 inColor;
in float inTextureIndex;

uniform mat4 projectionTransform;
uniform float tintStrength;

out vec4 color;
out vec3 tint;
out vec2 texCoord;
out float textureIndex;
out float alpha;
out float rgb;
out float rawColor;

void main() {
	texCoord = inTexCoord;
	color = inColor;
	float inverseTintStrength = 1.0 - tintStrength;
	vec3 redTint = vec3(1.0, inverseTintStrength, inverseTintStrength);
	vec3 greenTint = vec3(inverseTintStrength, 1.0, inverseTintStrength);
	vec3 blueTint = vec3(inverseTintStrength, inverseTintStrength, 1.0);
	rgb = 0.0;
	if (color.r > 0.0 && color.g > 0.0 && color.b > 0.0) {
		rgb = 1.0;
		color = vec4(0.0, 0.0, 0.0, 0.0);
	} else if (color.r + color.g + color.b > 0.0 && color.a > 0.0) {
		alpha = 0.0;
		color.a = 0.0;
	} else {
		alpha = 1.0;
	}
	tint = redTint * ceil(color.r) + greenTint * ceil(color.g) + blueTint * ceil(color.b) + vec3(ceil(color.a));
	rawColor = 0.0;
	if (inTextureIndex == 0) {
		tint = vec3(0.0, 0.0, 0.0);
		rgb = 0.0;
		rawColor = 1.0;
		color = inColor;
	}
	textureIndex = inTextureIndex;
	gl_Position = projectionTransform * vec4(inPosition, 0.0, 1.0);
}