From f64535671df886168edfeae68dcaba43098d73d6 Mon Sep 17 00:00:00 2001 From: Brett Date: Sat, 11 Feb 2023 12:09:15 -0500 Subject: [PATCH] fix perspective matrix --- include/blt/std/math.h | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/include/blt/std/math.h b/include/blt/std/math.h index 005768e..267f7e4 100644 --- a/include/blt/std/math.h +++ b/include/blt/std/math.h @@ -511,17 +511,22 @@ namespace blt { // https://www.scratchapixel.com/lessons/3d-basic-rendering/perspective-and-orthographic-projection-matrix/building-basic-perspective-projection-matrix.html // https://ogldev.org/www/tutorial12/tutorial12.html static inline mat4x4 perspective(float fov, float aspect_ratio, float near, float far){ - mat4x4 perspectiveMat4x4; + mat4x4 perspectiveMat4x4 {emptyMatrix}; float oneOverNearMFar = 1.0f / (near - far); float halfTan = tanf(fov * 0.5f * (float)M_PI / 180.0f); - perspectiveMat4x4.m00(1.0f/(aspect_ratio*halfTan)); - perspectiveMat4x4.m11(1.0f/halfTan); - perspectiveMat4x4.m22((far + near) * oneOverNearMFar); - perspectiveMat4x4.m32(2 * far * near * oneOverNearMFar); - perspectiveMat4x4.m23(-1); - perspectiveMat4x4.m33(0); +// perspectiveMat4x4.m00(1.0f/(aspect_ratio*halfTan)); +// perspectiveMat4x4.m11(1.0f/halfTan); +// perspectiveMat4x4.m22((far + near) * oneOverNearMFar); +// perspectiveMat4x4.m32(2 * far * near * oneOverNearMFar); +// perspectiveMat4x4.m23(-1); +// perspectiveMat4x4.m33(0); + perspectiveMat4x4.m00(float(1.0 / (aspect_ratio * halfTan))); + perspectiveMat4x4.m11(float(1.0 / halfTan)); + perspectiveMat4x4.m22(float(-((far + near) / (far - near)))); + perspectiveMat4x4.m32(-1); + perspectiveMat4x4.m23(float(-((2 * near * far) / (far - near)))); return perspectiveMat4x4; }