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Diffstat (limited to 'video/out/opengl/utils.h')
| -rw-r--r-- | video/out/opengl/utils.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/video/out/opengl/utils.h b/video/out/opengl/utils.h index a4a6cac302..170e24d71a 100644 --- a/video/out/opengl/utils.h +++ b/video/out/opengl/utils.h @@ -87,6 +87,9 @@ void fbotex_set_filter(struct fbotex *fbo, GLenum gl_filter); // A 3x2 matrix, with the translation part separate. struct gl_transform { + // row-major, e.g. in mathematical notation: + // | m[0][0] m[0][1] | + // | m[1][0] m[1][1] | float m[2][2]; float t[2]; }; @@ -104,8 +107,8 @@ void gl_transform_ortho(struct gl_transform *t, float x0, float x1, static inline void gl_transform_vec(struct gl_transform t, float *x, float *y) { float vx = *x, vy = *y; - *x = vx * t.m[0][0] + vy * t.m[1][0] + t.t[0]; - *y = vx * t.m[0][1] + vy * t.m[1][1] + t.t[1]; + *x = vx * t.m[0][0] + vy * t.m[0][1] + t.t[0]; + *y = vx * t.m[1][0] + vy * t.m[1][1] + t.t[1]; } struct mp_rect_f { |