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Merge branch 'imbris/fix-ui-edge-case' into 'master'

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Ensure in-world UI elements are snapped to pixel borders.

See merge request veloren/veloren!3866
This commit is contained in:
Imbris 2023-04-13 04:42:47 +00:00
commit bbe7ca57a8
1 changed files with 6 additions and 2 deletions
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8
assets/voxygen/shaders/ui-vert.glsl
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@ -38,8 +38,12 @@ void main() {
if (w_pos.w == 1.0) {
f_uv = v_uv;
// Fixed scale In-game element
vec4 projected_pos = /*proj_mat * view_mat*/all_mat * vec4(w_pos.xyz - focus_off.xyz, 1.0);
gl_Position = vec4(projected_pos.xy / projected_pos.w + v_pos/* * projected_pos.w*/, 0.5, /*projected_pos.w*/1.0);
vec4 projected_pos = all_mat * vec4(w_pos.xyz - focus_off.xyz, 1.0);
// Note, if screen_res is odd this won't actually be snapped to a
// pixel, but we are using it as an offset so we just need to ensure
// that it is a multiple of a whole pixel.
vec2 snapped_pos = round((projected_pos.xy / projected_pos.w) * screen_res.xy / 2.0) * 2.0 / screen_res.xy;
gl_Position = vec4(snapped_pos + v_pos, 0.5, 1.0);
} else if (v_mode == uint(3)) {
// HACK: North facing source rectangle.
gl_Position = vec4(v_pos, 0.5, 1.0);