DevilsDagger's LUTs

#version 330
uniform float seed;
uniform float vhs_scale;
uniform float lut_scale;
uniform float lut2_scale;
uniform float exposure;
uniform vec3 cam_position;
uniform vec3 light_dir;
uniform mat3 aspect_view_proj;
uniform mat4 view_proj_matrix;
uniform sampler2D tex_diffuse;
uniform sampler2D tex_diffuse2;
uniform sampler2D tex_lut;
uniform sampler2D tex_lut2;
varying vec2 vert_uv0;
varying vec2 vert_view_pos;
varying vec3 vert_view_dir;
void main( )
{
	vec2 vuv = vert_uv0.xy + vhs_scale * 0.003 * vec2( pow( 1.0 - ( abs( seed - vert_uv0.y )), seed * 144.0 ), 0.0 );
	vec4 result0 = texture( tex_diffuse, vuv ) * vec4( 1.0, 0.0, 0.0, 1.0 );
	result0 += texture( tex_diffuse, vuv + vhs_scale * vec2( 0.002, 0.0 )) * vec4( 0.0, 1.0, 0.0, 1.0 );
	result0 += texture( tex_diffuse, vuv + vhs_scale * vec2(-0.002, 0.0 ) ) * vec4( 0.0, 0.0, 1.0, 1.0 );
	//result0 *= result0;

//	result0.rgb *= 1.0 - clamp(( length( wpos - cam_position )) * 0.02, 0.0, 1.0 );

//	result0.rgb *= mix( vec3( 1.0 ), vec3( 0.0, 0.0, 0.4 ), min( 1.0, length( wpos - cam_position ) * 0.1 ));

	float r = sin( seed * 63.3 + dot(vert_uv0.xy ,vec2(12.9898,78.233))) * 43758.5453;
	vec3 noise = vec3( fract( r * 0.111 ), fract( r * 12.0 ), fract( r * 0.01 ));

	// result0 = texture( tex_diffuse, vert_uv0.xy );
	result0.rgb += vhs_scale * ( noise * 0.02 - 0.01 );

	result0 *= 2.0;
	result0.a = 1.0;
	

	float quantpow = 1.1;
	float sat = 1.0 - min( result0.r, min( result0.g, result0.b )) / max( 0.001, max( result0.r, max( result0.g, result0.b )));
	quantpow -= sat * 0.9;
	result0.rgb = pow( result0.rgb, vec3( quantpow ));
	vec3 quant = vec3( 19.0 );
	result0.rgb = floor( result0.rgb * quant ) / quant;
	result0.rgb = pow( result0.rgb, vec3( 1.0 / quantpow ));

	// LUT TEST
	vec3 lut_in = clamp( result0.rgb, vec3( 0.0 ), vec3( 1.0 ));
	float lut_tex_size = textureSize( tex_lut, 0 ).x;
	float lut_b = lut_in.b * 15.0;
	float lut_b_sub = fract( lut_b );
	lut_b -= lut_b_sub;
	vec2 lut_rg = lut_in.rg * 15.0 / vec2( lut_tex_size, 256.0 );
	//lut_rg.g = 0.0;
	lut_rg.g += lut_b * 16.0 / 256.0;
	lut_rg += vec2( 0.5 / lut_tex_size, 0.5 / 256.0 );
	lut_rg.g = 1.0 - lut_rg.g;
	vec3 lut_rgb = mix( textureLod( tex_lut, lut_rg, 0 ), textureLod( tex_lut, lut_rg - vec2( 0.0, 16.0 / 256.0 ), 0 ), lut_b_sub ).rgb;
	vec3 lut2_rgb = mix( textureLod( tex_lut2, lut_rg, 0 ), textureLod( tex_lut2, lut_rg - vec2( 0.0, 16.0 / 256.0 ), 0 ), lut_b_sub ).rgb;
	result0.rgb = mix( mix( result0.rgb, lut_rgb, lut_scale ), lut2_rgb, lut2_scale );

	result0.a = 1.0;

//	result0.rgb = wpos;

//	result0 = 1.0 * texture( tex_diffuse, vuv );

//	result0.rgb = qpos / 16.0;

	gl_FragColor = result0 * exposure;
}