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c/util: Compute eye and world inverse view matrix

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Co-authored-by: Charlton Rodda <charlton.rodda@collabora.com>
Co-authored-by: Jakob Bornecrantz <jakob@collabora.com>
This commit is contained in:
Simon Zeni 2023-10-20 14:10:04 -04:00 committed by Jakob Bornecrantz
parent 2c2cacc8f1
commit 38f1b35ac0
1 changed files with 8 additions and 0 deletions
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8
src/xrt/compositor/util/comp_render_gfx.c
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@ -49,6 +49,12 @@ struct gfx_view_state
struct xrt_matrix_4x4 world_vp_full;
// Full rotation and translation VP matrix, in view space.
struct xrt_matrix_4x4 eye_vp_full;
// Full rotation and translation inverse V matrix, in world space.
struct xrt_matrix_4x4 world_v_inv_full;
// Full rotation and translation inverse V matrix, in view space.
struct xrt_matrix_4x4 eye_v_inv_full;
// Only rotation and translation VP matrix, in world space.
struct xrt_matrix_4x4 world_vp_rot_only;
// Only rotation and translation VP matrix, in view space.
@ -275,6 +281,7 @@ do_layers(struct render_gfx *rr,
// World
math_matrix_4x4_view_from_pose(&world_poses[view], &v);
math_matrix_4x4_multiply(&p, &v, &views[view].world_vp_full);
math_matrix_4x4_inverse(&v, &views[view].world_v_inv_full);
struct xrt_pose world_rot_only = {world_poses[view].orientation, XRT_VEC3_ZERO};
math_matrix_4x4_view_from_pose(&world_rot_only, &v);
@ -283,6 +290,7 @@ do_layers(struct render_gfx *rr,
// Eye
math_matrix_4x4_view_from_pose(&eye_poses[view], &v);
math_matrix_4x4_multiply(&p, &v, &views[view].eye_vp_full);
math_matrix_4x4_inverse(&v, &views[view].eye_v_inv_full);
struct xrt_pose eye_rot_only = {eye_poses[view].orientation, XRT_VEC3_ZERO};
math_matrix_4x4_view_from_pose(&eye_rot_only, &v);