[PATCH xf86-video-amdgpu 2/4] Fix amdgpu_scanout_extents_intersect for GPU screens

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

Fixes incorrect screen updates with TearFree enabled on PRIME slave
outputs which are not located at (0, 0).

(Ported from radeon commit a995f5830916a0fee5126263d1bfe48632be3a15)

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/amdgpu_kms.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/amdgpu_kms.c b/src/amdgpu_kms.c
index 48e65a1..8a2fd30 100644
--- a/src/amdgpu_kms.c
+++ b/src/amdgpu_kms.c
@@ -300,11 +300,21 @@ static Bool AMDGPUCreateScreenResources_KMS(ScreenPtr pScreen)
 static Bool
 amdgpu_scanout_extents_intersect(xf86CrtcPtr xf86_crtc, BoxPtr extents)
 {
-	extents->x1 -= xf86_crtc->filter_width >> 1;
-	extents->x2 += xf86_crtc->filter_width >> 1;
-	extents->y1 -= xf86_crtc->filter_height >> 1;
-	extents->y2 += xf86_crtc->filter_height >> 1;
-	pixman_f_transform_bounds(&xf86_crtc->f_framebuffer_to_crtc, extents);
+#ifdef AMDGPU_PIXMAP_SHARING
+	if (xf86_crtc->scrn->is_gpu) {
+		extents->x1 -= xf86_crtc->x;
+		extents->y1 -= xf86_crtc->y;
+		extents->x2 -= xf86_crtc->x;
+		extents->y2 -= xf86_crtc->y;
+	} else
+#endif
+	{
+		extents->x1 -= xf86_crtc->filter_width >> 1;
+		extents->x2 += xf86_crtc->filter_width >> 1;
+		extents->y1 -= xf86_crtc->filter_height >> 1;
+		extents->y2 += xf86_crtc->filter_height >> 1;
+		pixman_f_transform_bounds(&xf86_crtc->f_framebuffer_to_crtc, extents);
+	}
 
 	extents->x1 = max(extents->x1, 0);
 	extents->y1 = max(extents->y1, 0);
-- 
2.10.2