From: Dmytro Laktyushkin <[email protected]>

[ Upstream commit 84aef2ab0977199784671295a07043191233d7c7 ]

Recout calculation does not corrrectly handle plane
clip rect that extends beyond the left most border
of stream source rect. This change adds handling by
truncating the invisible clip rect.

Signed-off-by: Dmytro Laktyushkin <[email protected]>
Reviewed-by: Hersen Wu <[email protected]>
Acked-by: Qingqing Zhuo <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 59d48cf819ea8..6d606cc32b09e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -796,6 +796,8 @@ static void calculate_recout(struct pipe_ctx *pipe_ctx)
        } else
                data->recout.x = 0;
 
+       if (stream->src.x > surf_clip.x)
+               surf_clip.width -= stream->src.x - surf_clip.x;
        data->recout.width = surf_clip.width * stream->dst.width / 
stream->src.width;
        if (data->recout.width + data->recout.x > stream->dst.x + 
stream->dst.width)
                data->recout.width = stream->dst.x + stream->dst.width - 
data->recout.x;
@@ -804,6 +806,8 @@ static void calculate_recout(struct pipe_ctx *pipe_ctx)
        if (stream->src.y < surf_clip.y)
                data->recout.y += (surf_clip.y - stream->src.y) * 
stream->dst.height
                                                / stream->src.height;
+       else if (stream->src.y > surf_clip.y)
+               surf_clip.height -= stream->src.y - surf_clip.y;
 
        data->recout.height = surf_clip.height * stream->dst.height / 
stream->src.height;
        if (data->recout.height + data->recout.y > stream->dst.y + 
stream->dst.height)
-- 
2.27.0

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