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Remove unnecessary branch in trail shader

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Branches have an outsize penalty in shaders as does discard. We don't
need the check that the fragment is in the region anyway ans the
rendering pipeline takes care of that for us, I think. At least I can
see no visual difference with it removed.

@jinhwanlazy please review
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Kovid Goyal 2024-12-11 21:14:57 +05:30
parent 29040d719c
commit 4b12bffcb1
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1 changed files with 1 additions and 6 deletions
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7
kitty/trail_fragment.glsl
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@ -7,10 +7,5 @@ in vec2 frag_pos;
out vec4 final_color;
void main() {
if (cursor_edge_x[0] <= frag_pos.x && frag_pos.x <= cursor_edge_x[1] &&
cursor_edge_y[1] <= frag_pos.y && frag_pos.y <= cursor_edge_y[0]) {
discard;
} else {
final_color = vec4(trail_color, trail_opacity);
}
final_color = vec4(trail_color, trail_opacity);
}