stk-code_catmod/data/shaders/degraded_ibl.frag

uniform sampler2D ntex;

#ifdef GL_ES
layout (location = 0) out vec4 Diff;
layout (location = 1) out vec4 Spec;
#else
out vec4 Diff;
out vec4 Spec;
#endif

#stk_include "utils/decodeNormal.frag"
#stk_include "utils/getPosFromUVDepth.frag"
#stk_include "utils/DiffuseIBL.frag"
#stk_include "utils/SpecularIBL.frag"

void main(void)
{
    vec2 uv = gl_FragCoord.xy / u_screen;
    vec3 normal = normalize(DecodeNormal(2. * texture(ntex, uv).xy - 1.));

    Diff = vec4(0.25 * DiffuseIBL(normal), 1.);
    Spec = vec4(0., 0., 0., 1.);
}