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SubjectRe: [PATCH] [RFC] drm_hwcomposer: Add support for Arm Framebuffer Compression (AFBC) modifiers.
On Tue, Jan 15, 2019 at 01:05:47PM +0100, Daniel Vetter wrote:
> On Mon, Jan 14, 2019 at 03:28:27PM +0000, Ayan Halder wrote:
> > One needs to translate the Gralloc buffer flags for AFBC (eg
> > MALI_GRALLOC_INTFMT_AFBC_BASIC) to the corresponding linux kernel drm modifiers.
> > This gets passed to libdrm via drmModeAddFB2WithModifiers.
> >
> > Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com>
> >
> > /-- Note for reviewer
> > I was able to get this working for Android P on Juno with Mali DP650 and Mali
> > T860 gpu(with some additional hacks). I have not yet validated this hikey960.
> >
> > I have used the following components:-
> > 1. Gralloc (from https://android.googlesource.com/device/linaro/hikey/+/master/gralloc960)
> > - Built with MALI_MMSS=1
> > 2. Libdrm (from git://anongit.freedesktop.org/mesa/drm)
> > - You would need drm_fourcc.h and gralloc_handle.h
> > --/
>
> I thought drm_hwcomposer has switched over to gitlab merge requests?
> README at least says so:
>
> https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer

So are we to send pull requests for RFCs as well?

Best regards,
Liviu

>
> Cheers, Daniel
>
> > ---
> > platformdrmgeneric.cpp | 42 ++++++++++++++++++++++++++++++++++++++++++
> > platformdrmgeneric.h | 2 ++
> > platformhisi.cpp | 14 ++++++++++++--
> > 3 files changed, 56 insertions(+), 2 deletions(-)
> >
> > diff --git a/platformdrmgeneric.cpp b/platformdrmgeneric.cpp
> > index 503c04a..a520224 100644
> > --- a/platformdrmgeneric.cpp
> > +++ b/platformdrmgeneric.cpp
> > @@ -18,6 +18,7 @@
> >
> > #include "platformdrmgeneric.h"
> > #include "drmdevice.h"
> > +#include "mali_gralloc_formats.h"
> > #include "platform.h"
> >
> > #include <drm/drm_fourcc.h>
> > @@ -83,6 +84,31 @@ uint32_t DrmGenericImporter::ConvertHalFormatToDrm(uint32_t hal_format) {
> > }
> > }
> >
> > +uint64_t DrmGenericImporter::ConvertGrallocFormatToDrmModifiers(uint64_t flags,
> > + bool is_rgb) {
> > + uint64_t features = 0;
> > +
> > + if (flags & MALI_GRALLOC_INTFMT_AFBC_BASIC)
> > + features |= AFBC_FORMAT_MOD_BLOCK_SIZE_16x16;
> > +
> > + if (is_rgb)
> > + features |= AFBC_FORMAT_MOD_YTR;
> > +
> > + if (flags & MALI_GRALLOC_INTFMT_AFBC_SPLITBLK)
> > + features |= (AFBC_FORMAT_MOD_SPLIT | AFBC_FORMAT_MOD_SPARSE);
> > +
> > + if (flags & MALI_GRALLOC_INTFMT_AFBC_WIDEBLK)
> > + features |= AFBC_FORMAT_MOD_BLOCK_SIZE_32x8;
> > +
> > + if (flags & MALI_GRALLOC_INTFMT_AFBC_TILED_HEADERS)
> > + features |= AFBC_FORMAT_MOD_TILED;
> > +
> > + if (features)
> > + return DRM_FORMAT_MOD_ARM_AFBC(features);
> > + else
> > + return 0;
> > +}
> > +
> > uint32_t DrmGenericImporter::DrmFormatToBitsPerPixel(uint32_t drm_format) {
> > switch (drm_format) {
> > case DRM_FORMAT_ARGB8888:
> > @@ -101,6 +127,22 @@ uint32_t DrmGenericImporter::DrmFormatToBitsPerPixel(uint32_t drm_format) {
> > }
> > }
> >
> > +bool DrmGenericImporter::IsDrmFormatRgb(uint32_t drm_format) {
> > + switch (drm_format) {
> > + case DRM_FORMAT_ARGB8888:
> > + case DRM_FORMAT_XBGR8888:
> > + case DRM_FORMAT_ABGR8888:
> > + case DRM_FORMAT_BGR888:
> > + case DRM_FORMAT_BGR565:
> > + return true;
> > + case DRM_FORMAT_YVU420:
> > + return false;
> > + default:
> > + ALOGE("Unsupported format %u assuming rgb?", drm_format);
> > + return true;
> > + }
> > +}
> > +
> > int DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > gralloc_handle_t *gr_handle = gralloc_handle(handle);
> > if (!gr_handle)
> > diff --git a/platformdrmgeneric.h b/platformdrmgeneric.h
> > index 233ba55..43cb618 100644
> > --- a/platformdrmgeneric.h
> > +++ b/platformdrmgeneric.h
> > @@ -36,6 +36,8 @@ class DrmGenericImporter : public Importer {
> > bool CanImportBuffer(buffer_handle_t handle) override;
> >
> > uint32_t ConvertHalFormatToDrm(uint32_t hal_format);
> > + uint64_t ConvertGrallocFormatToDrmModifiers(uint64_t flags, bool is_rgb);
> > + bool IsDrmFormatRgb(uint32_t drm_format);
> > uint32_t DrmFormatToBitsPerPixel(uint32_t drm_format);
> >
> > private:
> > diff --git a/platformhisi.cpp b/platformhisi.cpp
> > index 76fe1e7..1cb7e2c 100644
> > --- a/platformhisi.cpp
> > +++ b/platformhisi.cpp
> > @@ -71,6 +71,9 @@ int HisiImporter::Init() {
> > }
> >
> > int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > + bool is_rgb;
> > + uint64_t modifiers[4] = {0};
> > +
> > memset(bo, 0, sizeof(hwc_drm_bo_t));
> >
> > private_handle_t const *hnd = reinterpret_cast<private_handle_t const *>(
> > @@ -94,6 +97,10 @@ int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > if (fmt < 0)
> > return fmt;
> >
> > + is_rgb = IsDrmFormatRgb(fmt);
> > + modifiers[0] = ConvertGrallocFormatToDrmModifiers(hnd->internal_format,
> > + is_rgb);
> > +
> > bo->width = hnd->width;
> > bo->height = hnd->height;
> > bo->hal_format = hnd->req_format;
> > @@ -129,8 +136,11 @@ int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > break;
> > }
> >
> > - ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
> > - bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
> > + ret = drmModeAddFB2WithModifiers(drm_->fd(), bo->width, bo->height,
> > + bo->format, bo->gem_handles, bo->pitches,
> > + bo->offsets, modifiers, &bo->fb_id,
> > + modifiers[0] ? DRM_MODE_FB_MODIFIERS : 0);
> > +
> > if (ret) {
> > ALOGE("could not create drm fb %d", ret);
> > return ret;
> > --
> > 2.7.4
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch

--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯

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