Mercurial > games > semicongine

diff semiconginev2/core/matrix.nim @ 1257:e9b8d87b9883

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fix: super stupid bug in perspective matrix X(
author sam <sam@basx.dev>
date Sun, 28 Jul 2024 18:55:46 +0700
parents b0f4c8ccd49a
children
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line diff
--- a/semiconginev2/core/matrix.nim	Sun Jul 28 17:33:41 2024 +0700
+++ b/semiconginev2/core/matrix.nim	Sun Jul 28 18:55:46 2024 +0700
@@ -444,12 +444,12 @@
 makeRandomMatrixInit(TMat4)
 
 func Perspective*(fovy, aspect, zNear, zFar: float32): Mat4 =
-  let tanHalfFovy = tan(fovy / 2)
+  let tanHalfFovy = 1 / tan(fovy / 2)
   return Mat4(data: [
-    1 / (aspect * tanHalfFovy), 0, 0, 0,
-    0, 1 / tanHalfFovy, 0, 0,
+    tanHalfFovy / aspect, 0, 0, 0,
+    0, tanHalfFovy, 0, 0,
     0, 0, zFar / (zFar - zNear), -(zFar * zNear) / (zFar - zNear),
-    0, 0, 1, 1,
+    0, 0, 1, 0,
   ])
 
 func Ortho*(left, right, top, bottom, zNear, zFar: float32): Mat4 =