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LibGL: Only normalize in glRotate* if possible

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Vectors of length 0 cannot be normalized, so prevent dividing by zero
in the `glRotate*` API. This fixes the skybox rendering of Quake2.
This commit is contained in:
Jelle Raaijmakers 2022-03-10 10:22:32 +01:00 • committed by Andreas Kling
commit 5d0a64bfde
Notes: sideshowbarker 2024-07-17 17:36:52 +09:00
2 changed files with 6 additions and 5 deletions
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2
Userland/Libraries/LibGL/GLContext.h
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@ -70,7 +70,7 @@ public:
void gl_push_matrix();
void gl_pop_matrix();
void gl_mult_matrix(FloatMatrix4x4 const& matrix);
void gl_rotate(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
void gl_rotate(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
void gl_scale(GLdouble x, GLdouble y, GLdouble z);
void gl_translate(GLdouble x, GLdouble y, GLdouble z);
void gl_vertex(GLdouble x, GLdouble y, GLdouble z, GLdouble w);