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v0.4.12: single-sided anchor quad (drop back face)
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The anchor sits flush against a wall by design, so the back face never
gets a viewer. Drawing it cost an extra 4 vertices and doubled the
fragment shader work for the video texture per anchor for no visible
benefit. Removing it also fixes the mirrored-texture artifact a player
would see if they clipped behind the wall (e.g. spectator mode).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
tkrmagid
2026-05-16 03:29:03 +09:00
parent 9b99283b70
commit 6896870186
3 changed files with 15 additions and 17 deletions
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10
src/main/java/com/ejclaw/videoplayer/client/render/VideoAnchorRenderer.java
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@@ -76,16 +76,14 @@ public class VideoAnchorRenderer implements BlockEntityRenderer<VideoAnchorBlock
final Matrix4f mat = new Matrix4f(pose.last().pose());
RenderType rt = RenderTypes.entityCutout(tex);
collector.submitCustomGeometry(pose, rt, (poseUnused, vc) -> {
// Front face (visible from outside, looking back at the wall)
// Single-sided: the back of the anchor is by design pressed against the wall the
// player clicked, so a back face is pure GPU waste. Halves the fragment shader work
// per anchor and removes the mirrored-texture artifact a player would see if they
// somehow clipped behind the wall.
emit(vc, mat, 0F, 0F, 0F, 0F, 1F, light);
emit(vc, mat, w, 0F, 0F, 1F, 1F, light);
emit(vc, mat, w, h, 0F, 1F, 0F, light);
emit(vc, mat, 0F, h, 0F, 0F, 0F, light);
// Back face (in case the player ends up on the other side, e.g. clipping into the wall)
emit(vc, mat, 0F, h, 0F, 0F, 0F, light);
emit(vc, mat, w, h, 0F, 1F, 0F, light);
emit(vc, mat, w, 0F, 0F, 1F, 1F, light);
emit(vc, mat, 0F, 0F, 0F, 0F, 1F, light);
});
pose.popPose();