#version 330 core
// for snow rendering
layout (location = 0) in vec3 aPos;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;

void main()
{
    gl_Position = projection * view * model * vec4(aPos, 1.0);
}

#version 330
out vec4 FragColor;

uniform sampler3D volumeData;

void main()
{
    ivec3 size = textureSize(volumeData, 0);
    float c = texture3D(volumeData, vec3(0)).x;
    if (size.x == 1)
        FragColor = vec4(1.0, 0.0, c, 1.0);
    else if (size.x > 2)
        FragColor = vec4(0.0, 1.0, 0.0, 1.0);
    else if (size.x == 0)
        FragColor = vec4(0.0, 0.0, 1.0, 1.0);
    else
        FragColor = vec4(1.0, 1.0, 1.0, 1.0);
}