Animation fragment shader

Animate.fs

#version 330 core

uniform sampler2D   texture;

// Individual sprite dimensions expressed in the proper texcoord range.
// For example, a 32x32 sprite would be <0.03125, 0.03125>
// This would then be interpolated from [0, 0.03125], properly rendering
// all of the texels in the desired sprite.
uniform vec2        tc_offset;

// Starting offset within the sprite sheet. For example, if you wanted the
// 2nd sprite of the 3rd row of a sprite sheet with 16x16 sprites, you'd
// pass <2 * 1/16, 3 * 1/16>
uniform vec2        tc_start;

smooth  in  vec2 fs_texc;
smooth  in  vec4 fs_color;
        out vec4 out_color;

void main()
{
    out_color = texture2D(texture, tc_start + (fs_texc * tc_offset)) * fs_color;
}