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shader/rectangle_frag.glsl@c3ae2b2e8ff6

shader/rectangle_frag.glsl

Sun, 15 Jun 2025 19:46:12 +0200

author

Mike Becker <universe@uap-core.de>

date

Sun, 15 Jun 2025 19:46:12 +0200

changeset 152

c3ae2b2e8ff6

parent 151

42960d0c879b

permissions

-rw-r--r--

fix that some drivers fail to compile a shader when a code line is NULL with length zero

layout(location = 0) out vec4 diffuse;
in vec2 uvcoord;

uniform vec4 color;
uniform vec2 size;
#ifndef FILL
uniform float thickness;
#endif

void main(void) {
#ifdef FILL
    diffuse = color;
#else
    if (uvcoord.x < thickness || uvcoord.x >= size.x - thickness || uvcoord.y < thickness || uvcoord.y >= size.y-thickness) {
        diffuse = color;
    } else {
        discard;
    }
#endif
}