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[client] egl: use eglSwapBuffersWithDamageKHR for cursor-only updates

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Instead of damaging the entire surface when rendering a cursor move,
we can use the EGL_KHR_swap_buffers_with_damage extension to only
damage the part of the window covered by the cursor. This should
reduce the cursor movement latency on Wayland.
This commit is contained in:
Quantum
2021-05-11 16:49:39 -04:00
committed by Geoffrey McRae
parent f9a9953071
commit e70cfd84fb
14 changed files with 140 additions and 15 deletions
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10
client/renderers/EGL/cursor.c
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@@ -215,6 +215,16 @@ void egl_cursor_set_state(EGL_Cursor * cursor, const bool visible, const float x
cursor->y = y;
}
struct CursorState egl_cursor_get_state(EGL_Cursor * cursor, int width, int height) {
return (struct CursorState) {
.visible = cursor->visible,
.rect.x = (cursor->x * width + width) / 2,
.rect.y = (-cursor->y * height + height) / 2 - cursor->h * height,
.rect.w = cursor->w * width + 2,
.rect.h = cursor->h * height + 2,
};
}
void egl_cursor_render(EGL_Cursor * cursor, LG_RendererRotate rotate)
{
if (!cursor->visible)