Commit d29bd94c authored Oct 18, 2024 by Austin Zheng Committed by Alex Deucher Nov 04, 2024

drm/amd/display: Do Not Fallback To SW Cursor If HW Cursor Required



[Why/How]
Tearing can occur if there is a flip immediate plane and SW cursor.
check_subvp_sw_cursor_fallback_req falls back to SW cursor if the
stream has the potential to use subVP.
Check for fallback not needed if HW cursor is required.
e.g. Fullscreen gaming

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Austin Zheng <Austin.Zheng@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent b95264cf

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -292,7 +292,9 @@ bool dc_stream_set_cursor_attributes(
		* 2. If not subvp high refresh, for single display cases, if resolution is >= 5K and refresh rate < 120hz
		* 3. If not subvp high refresh, for multi display cases, if resolution is >= 4K and refresh rate < 120hz
		*/
		if (dc->debug.allow_sw_cursor_fallback && attributes->height * attributes->width * 4 > 16384) {
		if (dc->debug.allow_sw_cursor_fallback &&
		attributes->height * attributes->width * 4 > 16384 &&
		!stream->hw_cursor_req) {
		if (check_subvp_sw_cursor_fallback_req(dc, stream))
		return false;
		}