[PATCH xf86-video-amdgpu] Check Xorg version at runtime instead of build time in two places

[Deucher, Alexander]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Michel Dänzer
> Sent: Tuesday, November 01, 2016 11:44 PM
> To: amd-gfx at lists.freedesktop.org
> Subject: [PATCH xf86-video-amdgpu] Check Xorg version at runtime instead
> of build time in two places
> 
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> This means that all possible paths can be handled as intended, no matter
> which Xorg version the driver happened to be compiled against.
> 
> (Ported from radeon commit 350a2645a1b127227ff294c0b62d20000d0fd48a)
> 
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  man/amdgpu.man        | 2 +-
>  src/amdgpu_kms.c      | 6 +-----
>  src/drmmode_display.c | 8 ++++----
>  3 files changed, 6 insertions(+), 10 deletions(-)
> 
> diff --git a/man/amdgpu.man b/man/amdgpu.man
> index 93244a4..948cd70 100644
> --- a/man/amdgpu.man
> +++ b/man/amdgpu.man
> @@ -65,7 +65,7 @@ will assign xrandr outputs LVDS and VGA-0 to this
> instance of the driver.
>  Define the maximum level of DRI to enable. Valid values are 2 for DRI2 or 3
> for DRI3.
>  The default is
>  .B 3 for DRI3
> -if the driver was compiled for Xorg >= 1.18.3, otherwise
> +if the Xorg version is >= 1.18.3, otherwise
>  .B 2 for DRI2.
>  .TP
>  .BI "Option \*qEnablePageFlip\*q \*q" boolean \*q
> diff --git a/src/amdgpu_kms.c b/src/amdgpu_kms.c
> index acf3a7d..b21cd37 100644
> --- a/src/amdgpu_kms.c
> +++ b/src/amdgpu_kms.c
> @@ -1713,11 +1713,7 @@ Bool
> AMDGPUScreenInit_KMS(SCREEN_INIT_ARGS_DECL)
>  	}
>  #endif
> 
> -#if XORG_VERSION_CURRENT >= XORG_VERSION_NUMERIC(1,18,3,0,0)
> -	value = TRUE;
> -#else
> -	value = FALSE;
> -#endif
> +	value = xorgGetVersion() >= XORG_VERSION_NUMERIC(1,18,3,0,0);
>  	from = X_DEFAULT;
> 
>  	if (info->use_glamor) {
> diff --git a/src/drmmode_display.c b/src/drmmode_display.c
> index f514866..2d36881 100644
> --- a/src/drmmode_display.c
> +++ b/src/drmmode_display.c
> @@ -607,10 +607,10 @@ drmmode_can_use_hw_cursor(xf86CrtcPtr crtc)
>  		return FALSE;
>  #endif
> 
> -#if defined(AMDGPU_PIXMAP_SHARING) && \
> -	XORG_VERSION_CURRENT <=
> XORG_VERSION_NUMERIC(1,18,99,901,0)
> -	/* HW cursor not supported with RandR 1.4 multihead */
> -	if (!xorg_list_is_empty(&crtc->scrn->pScreen->pixmap_dirty_list))
> +#if defined(AMDGPU_PIXMAP_SHARING)
> +	/* HW cursor not supported with RandR 1.4 multihead up to
> 1.18.99.901 */
> +	if (xorgGetVersion() <= XORG_VERSION_NUMERIC(1,18,99,901,0)
> &&
> +	    !xorg_list_is_empty(&crtc->scrn->pScreen->pixmap_dirty_list))
>  		return FALSE;
>  #endif
> 
> --
> 2.10.2
> 
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