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Terrarum/assets/18BitColour.frag

14 lines
367 B
GLSL

varying vec4 v_color;
varying vec2 v_texCoords;
uniform sampler2D u_texture;
void main(void) {
vec4 color = texture2D(u_texture, v_texCoords).rgba;
color.r = floor(63.0 * color.r + 0.5) / 63.0;
color.g = floor(63.0 * color.g + 0.5) / 63.0;
color.b = floor(63.0 * color.b + 0.5) / 63.0;
// a: passthrough
gl_FragColor = vec4(color.rgb, 1);
}