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c/util: Add calc_mv_inv_full function

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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 14:10:32 -04:00 committed by Jakob Bornecrantz
parent 38f1b35ac0
commit 0d0addca82
1 changed files with 23 additions and 0 deletions
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23
src/xrt/compositor/util/comp_render_gfx.c
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@ -100,6 +100,29 @@ calc_mvp_full(struct gfx_view_state *state,
}
}
static inline void
calc_mv_inv_full(struct gfx_view_state *state,
const struct xrt_layer_data *layer_data,
const struct xrt_pose *pose,
const struct xrt_vec3 *scale,
struct xrt_matrix_4x4 *result)
{
struct xrt_matrix_4x4 model;
math_matrix_4x4_model(pose, scale, &model);
struct xrt_matrix_4x4 model_inv;
math_matrix_4x4_inverse(&model, &model_inv);
struct xrt_matrix_4x4 *v;
if (is_layer_view_space(layer_data)) {
v = &state->eye_v_inv_full;
} else {
v = &state->world_v_inv_full;
}
math_matrix_4x4_multiply(&model_inv, v, result);
}
static inline void
calc_mvp_rot_only(struct gfx_view_state *state,
const struct xrt_layer_data *data,