diff options
| author | David Thompson <dthompson2@worcester.edu> | 2021-04-13 10:59:20 -0400 |
|---|---|---|
| committer | David Thompson <dthompson2@worcester.edu> | 2021-04-13 10:59:20 -0400 |
| commit | 9805b1c02e50ce59ae1321ca9e368a6873a246ec (patch) | |
| tree | e654bf9f8eaf49a2f23fe3b9028cb0a69932385e | |
| parent | 9ee21dc696680be5ca2760eeba172a222eeaeef2 (diff) | |
graphics: tile-map: Hack to prevent one situation that causes artifacts.
| -rw-r--r-- | chickadee/graphics/tile-map.scm | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/chickadee/graphics/tile-map.scm b/chickadee/graphics/tile-map.scm index 1453407..083d61e 100644 --- a/chickadee/graphics/tile-map.scm +++ b/chickadee/graphics/tile-map.scm @@ -912,6 +912,15 @@ argument may be used to specify a list of layers to draw, instead." (vec2-copy! camera *position*) (vec2-mult! *position* -1.0) (vec2-add! *position* position) + ;; XXX: Round position to nearest pixel to maybe avoid texture + ;; artifacts caused by texels not aligning perfectly with the + ;; viewport pixels. Of course, if the projection matrix isn't pixel + ;; perfect, or if the map is scaled, or if there is rotation, then + ;; this issue can happen anyway. Sigh... much to learn about how to + ;; improve this. + (set-vec2! *position* + (round (vec2-x *position*)) + (round (vec2-y *position*))) (matrix4-2d-transform! *matrix* #:origin origin #:position *position* |