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vulkan: Support non-axis aligned rotations

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We really just need to set the clipper up with the existing function
to get this to work.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
(cherry picked from commit fcb0d75d44)
This commit is contained in:
Derek Foreman 2026-03-30 13:08:48 -05:00 • committed by Marius Vlad
parent 71191cd127
commit 5eba5ca43c
1 changed files with 7 additions and 11 deletions
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18
libweston/renderer-vulkan/vulkan-renderer.c
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@ -1554,9 +1554,10 @@ vulkan_pipeline_config_init_for_paint_node(struct vulkan_pipeline_config *pconf,
static void
rect_to_quad(pixman_box32_t *rect,
struct weston_view *ev,
struct weston_paint_node *pnode,
struct clipper_quad *quad)
{
struct clipper_vertex polygon[4];
struct weston_coord_global rect_g[4] = {
{ .c = weston_coord(rect->x1, rect->y1) },
{ .c = weston_coord(rect->x2, rect->y1) },
@ -1567,16 +1568,12 @@ rect_to_quad(pixman_box32_t *rect,
/* Transform rect to surface space. */
for (int i = 0; i < 4; i++) {
rect_s = weston_coord_global_to_surface(ev, rect_g[i]).c;
quad->polygon[i].x = (float)rect_s.x;
quad->polygon[i].y = (float)rect_s.y;
rect_s = weston_coord_global_to_surface(pnode->view, rect_g[i]).c;
polygon[i].x = (float)rect_s.x;
polygon[i].y = (float)rect_s.y;
}
quad->axis_aligned = !ev->transform.enabled ||
(ev->transform.matrix.type < WESTON_MATRIX_TRANSFORM_ROTATE);
// TODO handle !axis_aligned ?
assert(quad->axis_aligned);
clipper_quad_init(quad, polygon, pnode->valid_transform);
}
static uint32_t
@ -1586,7 +1583,6 @@ generate_fans(struct weston_paint_node *pnode,
struct wl_array *vertices,
struct wl_array *vtxcnt)
{
struct weston_view *ev = pnode->view;
struct clipper_vertex *v;
uint32_t *cnt;
uint32_t nvtx = 0;
@ -1605,7 +1601,7 @@ generate_fans(struct weston_paint_node *pnode,
cnt = wl_array_add(vtxcnt, nrects * nsurf * sizeof(uint32_t));
for (int i = 0; i < nrects; i++) {
rect_to_quad(&rects[i], ev, &quad);
rect_to_quad(&rects[i], pnode, &quad);
for (int j = 0; j < nsurf; j++) {
uint32_t n;