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[PATCH] drm/vkms: Add support for ABGR8888 pixel format

Paz Zcharya posted 1 patch 1 month, 3 weeks ago 
drivers/gpu/drm/vkms/vkms_formats.c   | 20 ++++++++++++++++++++
drivers/gpu/drm/vkms/vkms_plane.c     |  1 +
drivers/gpu/drm/vkms/vkms_writeback.c |  1 +
3 files changed, 22 insertions(+)
[PATCH] drm/vkms: Add support for ABGR8888 pixel format
Posted by Paz Zcharya 1 month, 3 weeks ago 
Add support for pixel format ABGR8888, which is the default format
on Android devices. This will allow us to use VKMS as the default
display driver in Android Emulator (Cuttlefish) and increase VKMS
adoption.

Signed-off-by: Paz Zcharya <pazz@chromium.org>
---

 drivers/gpu/drm/vkms/vkms_formats.c   | 20 ++++++++++++++++++++
 drivers/gpu/drm/vkms/vkms_plane.c     |  1 +
 drivers/gpu/drm/vkms/vkms_writeback.c |  1 +
 3 files changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index 040b7f113a3b..9e9d7290388e 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -73,6 +73,14 @@ static void XRGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixe
 	out_pixel->b = (u16)src_pixels[0] * 257;
 }
 
+static void ABGR8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
+{
+	out_pixel->a = (u16)src_pixels[3] * 257;
+	out_pixel->b = (u16)src_pixels[2] * 257;
+	out_pixel->g = (u16)src_pixels[1] * 257;
+	out_pixel->r = (u16)src_pixels[0] * 257;
+}
+
 static void ARGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
 {
 	__le16 *pixels = (__force __le16 *)src_pixels;
@@ -176,6 +184,14 @@ static void argb_u16_to_XRGB8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel
 	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
 }
 
+static void argb_u16_to_ABGR8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
+{
+	dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixel->a, 257);
+	dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
+	dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixel->g, 257);
+	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->r, 257);
+}
+
 static void argb_u16_to_ARGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
 {
 	__le16 *pixels = (__force __le16 *)dst_pixels;
@@ -234,6 +250,8 @@ void *get_pixel_conversion_function(u32 format)
 		return &ARGB8888_to_argb_u16;
 	case DRM_FORMAT_XRGB8888:
 		return &XRGB8888_to_argb_u16;
+	case DRM_FORMAT_ABGR8888:
+		return &ABGR8888_to_argb_u16;
 	case DRM_FORMAT_ARGB16161616:
 		return &ARGB16161616_to_argb_u16;
 	case DRM_FORMAT_XRGB16161616:
@@ -252,6 +270,8 @@ void *get_pixel_write_function(u32 format)
 		return &argb_u16_to_ARGB8888;
 	case DRM_FORMAT_XRGB8888:
 		return &argb_u16_to_XRGB8888;
+	case DRM_FORMAT_ABGR8888:
+		return &argb_u16_to_ABGR8888;
 	case DRM_FORMAT_ARGB16161616:
 		return &argb_u16_to_ARGB16161616;
 	case DRM_FORMAT_XRGB16161616:
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index e5c625ab8e3e..8efd585fc34c 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -15,6 +15,7 @@
 static const u32 vkms_formats[] = {
 	DRM_FORMAT_ARGB8888,
 	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ABGR8888,
 	DRM_FORMAT_XRGB16161616,
 	DRM_FORMAT_ARGB16161616,
 	DRM_FORMAT_RGB565
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index bc724cbd5e3a..04cb9c58e7ad 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -17,6 +17,7 @@
 static const u32 vkms_wb_formats[] = {
 	DRM_FORMAT_ARGB8888,
 	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ABGR8888,
 	DRM_FORMAT_XRGB16161616,
 	DRM_FORMAT_ARGB16161616,
 	DRM_FORMAT_RGB565
-- 
2.47.0.rc0.187.ge670bccf7e-goog
Re: [PATCH] drm/vkms: Add support for ABGR8888 pixel format
Posted by Louis Chauvet 1 month, 3 weeks ago 
On 07/10/24 - 14:27, Paz Zcharya wrote:
> Add support for pixel format ABGR8888, which is the default format
> on Android devices. This will allow us to use VKMS as the default
> display driver in Android Emulator (Cuttlefish) and increase VKMS
> adoption.

Hi Paz,

Thank you for your contribution!

I am very happy to see new users for VKMS, and I will be glad to add new 
formats to VKMS!

However, as you can see [1], there is a significant rework of the VKMS 
formats and composition that should be merged soon.

This series introduces two key improvements: performance enhancements and 
YUV support. These changes involve substantial modifications to the 
vkms_format.c file, which may conflict with your work.

Additionally, I wrote a few patches [2] and [3] a few months ago to 
practice with VKMS, and they did not receive any comments, so I believe I 
will be able to merge them quickly after [1].

In [2], I added many new formats: ABGR, BGRA, RGBA, XBGR, RGBX, BGRX, 
BGR565, P010, P012, P016. 
Would you mind testing this version to see if it meets your needs?

In [3], I did similar work for writeback, but it is not as complete, so I 
need to add a patch, almost identical to your code:

	static void argb_u16_to_ABGR8888(u8 *out_pixel, const struct pixel_argb_u16 *in_pixel)
		[...]

Added:	WRITE_LINE(XBGR8888_write_line, argb_u16_to_XBGR8888)

I need to send a v2 of [3] anyway because of conflicts, do you mind if I 
take your argb_u16_to_ABGR8888 to integrate it (with your signed-off-by 
obviously)?

In any case, if you have time to test, or even better review [1], [2] or 
[3], it could be amazing!

Thank you,
Louis Chauvet

[1]:https://lore.kernel.org/all/20241007-yuv-v12-0-01c1ada6fec8@bootlin.com/
[2]:https://lore.kernel.org/all/20241007-b4-new-color-formats-v2-0-d47da50d4674@bootlin.com/
[3]:https://lore.kernel.org/all/20240814-writeback_line_by_line-v2-0-36541c717569@bootlin.com/

> Signed-off-by: Paz Zcharya <pazz@chromium.org>
> ---
> 
>  drivers/gpu/drm/vkms/vkms_formats.c   | 20 ++++++++++++++++++++
>  drivers/gpu/drm/vkms/vkms_plane.c     |  1 +
>  drivers/gpu/drm/vkms/vkms_writeback.c |  1 +
>  3 files changed, 22 insertions(+)
> 
> diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
> index 040b7f113a3b..9e9d7290388e 100644
> --- a/drivers/gpu/drm/vkms/vkms_formats.c
> +++ b/drivers/gpu/drm/vkms/vkms_formats.c
> @@ -73,6 +73,14 @@ static void XRGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixe
>  	out_pixel->b = (u16)src_pixels[0] * 257;
>  }
>  
> +static void ABGR8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
> +{
> +	out_pixel->a = (u16)src_pixels[3] * 257;
> +	out_pixel->b = (u16)src_pixels[2] * 257;
> +	out_pixel->g = (u16)src_pixels[1] * 257;
> +	out_pixel->r = (u16)src_pixels[0] * 257;
> +}
> +
>  static void ARGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
>  {
>  	__le16 *pixels = (__force __le16 *)src_pixels;
> @@ -176,6 +184,14 @@ static void argb_u16_to_XRGB8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel
>  	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
>  }
>  
> +static void argb_u16_to_ABGR8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
> +{
> +	dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixel->a, 257);
> +	dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
> +	dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixel->g, 257);
> +	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->r, 257);
> +}
> +
>  static void argb_u16_to_ARGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
>  {
>  	__le16 *pixels = (__force __le16 *)dst_pixels;
> @@ -234,6 +250,8 @@ void *get_pixel_conversion_function(u32 format)
>  		return &ARGB8888_to_argb_u16;
>  	case DRM_FORMAT_XRGB8888:
>  		return &XRGB8888_to_argb_u16;
> +	case DRM_FORMAT_ABGR8888:
> +		return &ABGR8888_to_argb_u16;
>  	case DRM_FORMAT_ARGB16161616:
>  		return &ARGB16161616_to_argb_u16;
>  	case DRM_FORMAT_XRGB16161616:
> @@ -252,6 +270,8 @@ void *get_pixel_write_function(u32 format)
>  		return &argb_u16_to_ARGB8888;
>  	case DRM_FORMAT_XRGB8888:
>  		return &argb_u16_to_XRGB8888;
> +	case DRM_FORMAT_ABGR8888:
> +		return &argb_u16_to_ABGR8888;
>  	case DRM_FORMAT_ARGB16161616:
>  		return &argb_u16_to_ARGB16161616;
>  	case DRM_FORMAT_XRGB16161616:
> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> index e5c625ab8e3e..8efd585fc34c 100644
> --- a/drivers/gpu/drm/vkms/vkms_plane.c
> +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> @@ -15,6 +15,7 @@
>  static const u32 vkms_formats[] = {
>  	DRM_FORMAT_ARGB8888,
>  	DRM_FORMAT_XRGB8888,
> +	DRM_FORMAT_ABGR8888,
>  	DRM_FORMAT_XRGB16161616,
>  	DRM_FORMAT_ARGB16161616,
>  	DRM_FORMAT_RGB565
> diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
> index bc724cbd5e3a..04cb9c58e7ad 100644
> --- a/drivers/gpu/drm/vkms/vkms_writeback.c
> +++ b/drivers/gpu/drm/vkms/vkms_writeback.c
> @@ -17,6 +17,7 @@
>  static const u32 vkms_wb_formats[] = {
>  	DRM_FORMAT_ARGB8888,
>  	DRM_FORMAT_XRGB8888,
> +	DRM_FORMAT_ABGR8888,
>  	DRM_FORMAT_XRGB16161616,
>  	DRM_FORMAT_ARGB16161616,
>  	DRM_FORMAT_RGB565
> -- 
> 2.47.0.rc0.187.ge670bccf7e-goog
>
Re: [PATCH] drm/vkms: Add support for ABGR8888 pixel format
Posted by Paz Zcharya 1 month, 2 weeks ago 
On Mon, Oct 07, 2024 at 06:51:16PM +0200, Louis Chauvet wrote:
> On 07/10/24 - 14:27, Paz Zcharya wrote:
> > Add support for pixel format ABGR8888, which is the default format
> > on Android devices. This will allow us to use VKMS as the default
> > display driver in Android Emulator (Cuttlefish) and increase VKMS
> > adoption.
> 
> Hi Paz,
> 
> Thank you for your contribution!
> 
> I am very happy to see new users for VKMS, and I will be glad to add new 
> formats to VKMS!
> 
> However, as you can see [1], there is a significant rework of the VKMS 
> formats and composition that should be merged soon.
> 
Thank you for highlighting this. Great work!

> This series introduces two key improvements: performance enhancements and 
> YUV support. These changes involve substantial modifications to the 
> vkms_format.c file, which may conflict with your work.
> 
> Additionally, I wrote a few patches [2] and [3] a few months ago to 
> practice with VKMS, and they did not receive any comments, so I believe I 
> will be able to merge them quickly after [1].
> 
> In [2], I added many new formats: ABGR, BGRA, RGBA, XBGR, RGBX, BGRX, 
> BGR565, P010, P012, P016. 
> Would you mind testing this version to see if it meets your needs?
> 
Yep, this is perfect!

> In [3], I did similar work for writeback, but it is not as complete, so I 
> need to add a patch, almost identical to your code:
> 
> 	static void argb_u16_to_ABGR8888(u8 *out_pixel, const struct pixel_argb_u16 *in_pixel)
> 		[...]
> 
> Added:	WRITE_LINE(XBGR8888_write_line, argb_u16_to_XBGR8888)
> 
> I need to send a v2 of [3] anyway because of conflicts, do you mind if I 
> take your argb_u16_to_ABGR8888 to integrate it (with your signed-off-by 
> obviously)?
> 
Yeah, that would be very helpful. Thank you so much!

> In any case, if you have time to test, or even better review [1], [2] or 
> [3], it could be amazing!
> 
Patches look great. I tested them locally after adding ABGR8888
support, and things seem to be working.

Let me know if I can assist you with anything else.

Thanks,
Paz Zcharya
> Thank you,
> Louis Chauvet
> 
> [1]:https://lore.kernel.org/all/20241007-yuv-v12-0-01c1ada6fec8@bootlin.com/
> [2]:https://lore.kernel.org/all/20241007-b4-new-color-formats-v2-0-d47da50d4674@bootlin.com/
> [3]:https://lore.kernel.org/all/20240814-writeback_line_by_line-v2-0-36541c717569@bootlin.com/
> 
> > Signed-off-by: Paz Zcharya <pazz@chromium.org>
> > ---
> > 
> >  drivers/gpu/drm/vkms/vkms_formats.c   | 20 ++++++++++++++++++++
> >  drivers/gpu/drm/vkms/vkms_plane.c     |  1 +
> >  drivers/gpu/drm/vkms/vkms_writeback.c |  1 +
> >  3 files changed, 22 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
> > index 040b7f113a3b..9e9d7290388e 100644
> > --- a/drivers/gpu/drm/vkms/vkms_formats.c
> > +++ b/drivers/gpu/drm/vkms/vkms_formats.c
> > @@ -73,6 +73,14 @@ static void XRGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixe
> >  	out_pixel->b = (u16)src_pixels[0] * 257;
> >  }
> >  
> > +static void ABGR8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
> > +{
> > +	out_pixel->a = (u16)src_pixels[3] * 257;
> > +	out_pixel->b = (u16)src_pixels[2] * 257;
> > +	out_pixel->g = (u16)src_pixels[1] * 257;
> > +	out_pixel->r = (u16)src_pixels[0] * 257;
> > +}
> > +
> >  static void ARGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel)
> >  {
> >  	__le16 *pixels = (__force __le16 *)src_pixels;
> > @@ -176,6 +184,14 @@ static void argb_u16_to_XRGB8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel
> >  	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
> >  }
> >  
> > +static void argb_u16_to_ABGR8888(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
> > +{
> > +	dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixel->a, 257);
> > +	dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixel->b, 257);
> > +	dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixel->g, 257);
> > +	dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixel->r, 257);
> > +}
> > +
> >  static void argb_u16_to_ARGB16161616(u8 *dst_pixels, struct pixel_argb_u16 *in_pixel)
> >  {
> >  	__le16 *pixels = (__force __le16 *)dst_pixels;
> > @@ -234,6 +250,8 @@ void *get_pixel_conversion_function(u32 format)
> >  		return &ARGB8888_to_argb_u16;
> >  	case DRM_FORMAT_XRGB8888:
> >  		return &XRGB8888_to_argb_u16;
> > +	case DRM_FORMAT_ABGR8888:
> > +		return &ABGR8888_to_argb_u16;
> >  	case DRM_FORMAT_ARGB16161616:
> >  		return &ARGB16161616_to_argb_u16;
> >  	case DRM_FORMAT_XRGB16161616:
> > @@ -252,6 +270,8 @@ void *get_pixel_write_function(u32 format)
> >  		return &argb_u16_to_ARGB8888;
> >  	case DRM_FORMAT_XRGB8888:
> >  		return &argb_u16_to_XRGB8888;
> > +	case DRM_FORMAT_ABGR8888:
> > +		return &argb_u16_to_ABGR8888;
> >  	case DRM_FORMAT_ARGB16161616:
> >  		return &argb_u16_to_ARGB16161616;
> >  	case DRM_FORMAT_XRGB16161616:
> > diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> > index e5c625ab8e3e..8efd585fc34c 100644
> > --- a/drivers/gpu/drm/vkms/vkms_plane.c
> > +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> > @@ -15,6 +15,7 @@
> >  static const u32 vkms_formats[] = {
> >  	DRM_FORMAT_ARGB8888,
> >  	DRM_FORMAT_XRGB8888,
> > +	DRM_FORMAT_ABGR8888,
> >  	DRM_FORMAT_XRGB16161616,
> >  	DRM_FORMAT_ARGB16161616,
> >  	DRM_FORMAT_RGB565
> > diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
> > index bc724cbd5e3a..04cb9c58e7ad 100644
> > --- a/drivers/gpu/drm/vkms/vkms_writeback.c
> > +++ b/drivers/gpu/drm/vkms/vkms_writeback.c
> > @@ -17,6 +17,7 @@
> >  static const u32 vkms_wb_formats[] = {
> >  	DRM_FORMAT_ARGB8888,
> >  	DRM_FORMAT_XRGB8888,
> > +	DRM_FORMAT_ABGR8888,
> >  	DRM_FORMAT_XRGB16161616,
> >  	DRM_FORMAT_ARGB16161616,
> >  	DRM_FORMAT_RGB565
> > -- 
> > 2.47.0.rc0.187.ge670bccf7e-goog
> >

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