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Implement output transforms

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* output.c (ComputeTransform): Handle all combinations of
rotation and X axis reflection.
This commit is contained in:
hujianwei 2022-11-17 02:11:15 +00:00
parent 7128095c18
commit d4df421f8b
1 changed files with 30 additions and 2 deletions
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32
output.c
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@ -375,8 +375,36 @@ ComputeSubpixel (XRROutputInfo *info)
static uint32_t
ComputeTransform (XRRCrtcInfo *info)
{
/* TODO: support surface transforms. */
return WL_OUTPUT_TRANSFORM_NORMAL;
switch (info->rotation)
{
case RR_Rotate_0:
return WL_OUTPUT_TRANSFORM_NORMAL;
case RR_Rotate_90:
return WL_OUTPUT_TRANSFORM_90;
case RR_Rotate_180:
return WL_OUTPUT_TRANSFORM_180;
case RR_Rotate_270:
return WL_OUTPUT_TRANSFORM_270;
case RR_Reflect_X | RR_Rotate_0:
return WL_OUTPUT_TRANSFORM_FLIPPED;
case RR_Reflect_X | RR_Rotate_90:
return WL_OUTPUT_TRANSFORM_FLIPPED_90;
case RR_Reflect_X | RR_Rotate_180:
return WL_OUTPUT_TRANSFORM_FLIPPED_180;
case RR_Reflect_X | RR_Rotate_270:
return WL_OUTPUT_TRANSFORM_FLIPPED_270;
/* How should Y axis reflection be handled here? */
default:
return WL_OUTPUT_TRANSFORM_NORMAL;
}
}
static XLList *