[Mesa-dev] [PATCH 3/3] gbm: Export a get modifiers
Jason Ekstrand
jason at jlekstrand.net
Fri Mar 10 02:53:39 UTC 2017
Fairly straightforward and nothing seems amiss.
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
On Thu, Mar 9, 2017 at 5:49 PM, Ben Widawsky <ben at bwidawsk.net> wrote:
> This patch originally had i965 specific code and was named:
> commit 61cd3c52b868cf8cb90b06e53a382a921eb42754
> Author: Ben Widawsky <ben at bwidawsk.net>
> Date: Thu Oct 20 18:21:24 2016 -0700
>
> gbm: Get modifiers from DRI
>
> To accomplish this, two new query tokens are added to the extension:
> __DRI_IMAGE_ATTRIB_MODIFIER_UPPER
> __DRI_IMAGE_ATTRIB_MODIFIER_LOWER
>
> The query extension only supported 32b queries, and modifiers are 64b,
> so we needed two of them.
>
> NOTE: The extension version is still set to 13, so none of this will
> actually be called.
>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> ---
> src/gbm/backends/dri/gbm_dri.c | 36 ++++++++++++++++++++++++++++++++++++
> src/gbm/gbm-symbols-check | 1 +
> src/gbm/main/gbm.c | 19 +++++++++++++++++++
> src/gbm/main/gbm.h | 3 +++
> src/gbm/main/gbmint.h | 1 +
> 5 files changed, 60 insertions(+)
>
> diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_
> dri.c
> index d45ba94080..2c467127c2 100644
> --- a/src/gbm/backends/dri/gbm_dri.c
> +++ b/src/gbm/backends/dri/gbm_dri.c
> @@ -39,6 +39,7 @@
> #include <unistd.h>
> #include <dlfcn.h>
> #include <xf86drm.h>
> +#include <drm_fourcc.h>
>
> #include <GL/gl.h> /* dri_interface needs GL types */
> #include <GL/internal/dri_interface.h>
> @@ -53,6 +54,14 @@
> #include "../../../egl/wayland/wayland-drm/wayland-drm.h"
> #endif
>
> +#ifndef DRM_FORMAT_MOD_INVALID
> +#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
> +#endif
> +
> +#ifndef DRM_FORMAT_MOD_LINEAR
> +#define DRM_FORMAT_MOD_LINEAR 0
> +#endif
> +
> static __DRIimage *
> dri_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
> {
> @@ -735,6 +744,32 @@ gbm_dri_bo_get_offset(struct gbm_bo *_bo, int plane)
> return (uint32_t)offset;
> }
>
> +static uint64_t
> +gbm_dri_bo_get_modifier(struct gbm_bo *_bo)
> +{
> + struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
> + struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
> +
> + if (!dri->image || dri->image->base.version < 14) {
> + errno = ENOSYS;
> + return DRM_FORMAT_MOD_INVALID;
> + }
> +
> + /* Dumb buffers have no modifiers */
> + if (!bo->image)
> + return DRM_FORMAT_MOD_LINEAR;
> +
> + uint64_t ret = 0;
> + int mod;
> + dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
> &mod);
> + ret = (uint64_t)mod << 32;
> +
> + dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
> &mod);
> + ret |= mod;
> +
> + return ret;
> +}
> +
> static void
> gbm_dri_bo_destroy(struct gbm_bo *_bo)
> {
> @@ -1259,6 +1294,7 @@ dri_device_create(int fd)
> dri->base.base.bo_get_handle = gbm_dri_bo_get_handle_for_plane;
> dri->base.base.bo_get_stride = gbm_dri_bo_get_stride;
> dri->base.base.bo_get_offset = gbm_dri_bo_get_offset;
> + dri->base.base.bo_get_modifier = gbm_dri_bo_get_modifier;
> dri->base.base.bo_destroy = gbm_dri_bo_destroy;
> dri->base.base.destroy = dri_destroy;
> dri->base.base.surface_create = gbm_dri_surface_create;
> diff --git a/src/gbm/gbm-symbols-check b/src/gbm/gbm-symbols-check
> index c137c6cd93..c72fb66b03 100755
> --- a/src/gbm/gbm-symbols-check
> +++ b/src/gbm/gbm-symbols-check
> @@ -23,6 +23,7 @@ gbm_bo_get_handle
> gbm_bo_get_fd
> gbm_bo_get_plane_count
> gbm_bo_get_handle_for_plane
> +gbm_bo_get_modifier
> gbm_bo_write
> gbm_bo_set_user_data
> gbm_bo_get_user_data
> diff --git a/src/gbm/main/gbm.c b/src/gbm/main/gbm.c
> index 0fb62657ed..7ceaccdc21 100644
> --- a/src/gbm/main/gbm.c
> +++ b/src/gbm/main/gbm.c
> @@ -280,6 +280,25 @@ gbm_bo_get_handle_for_plane(struct gbm_bo *bo, int
> plane)
> return bo->gbm->bo_get_handle(bo, plane);
> }
>
> +/**
> + * Get the chosen modifier for the buffer object
> + *
> + * This function returns the modifier that was chosen for the object.
> These
> + * properties may be generic, or platform/implementation dependent.
> + *
> + * \param bo The buffer object
> + * \return Returns the selected modifier (chosen by the implementation)
> for the
> + * BO.
> + * \sa gbm_bo_create_with_modifiers() where possible modifiers are set
> + * \sa gbm_surface_create_with_modifiers() where possible modifiers are
> set
> + * \sa define DRM_FORMAT_MOD_* in drm_fourcc.h for possible modifiers
> + */
> +GBM_EXPORT uint64_t
> +gbm_bo_get_modifier(struct gbm_bo *bo)
> +{
> + return bo->gbm->bo_get_modifier(bo);
> +}
> +
> /** Write data into the buffer object
> *
> * If the buffer object was created with the GBM_BO_USE_WRITE flag,
> diff --git a/src/gbm/main/gbm.h b/src/gbm/main/gbm.h
> index 5f588dab58..a774b50951 100644
> --- a/src/gbm/main/gbm.h
> +++ b/src/gbm/main/gbm.h
> @@ -327,6 +327,9 @@ gbm_bo_get_handle(struct gbm_bo *bo);
> int
> gbm_bo_get_fd(struct gbm_bo *bo);
>
> +uint64_t
> +gbm_bo_get_modifier(struct gbm_bo *bo);
> +
> int
> gbm_bo_get_plane_count(struct gbm_bo *bo);
>
> diff --git a/src/gbm/main/gbmint.h b/src/gbm/main/gbmint.h
> index d8c9f6e5d7..5ad85cc80f 100644
> --- a/src/gbm/main/gbmint.h
> +++ b/src/gbm/main/gbmint.h
> @@ -82,6 +82,7 @@ struct gbm_device {
> union gbm_bo_handle (*bo_get_handle)(struct gbm_bo *bo, int plane);
> uint32_t (*bo_get_stride)(struct gbm_bo *bo, int plane);
> int64_t (*bo_get_offset)(struct gbm_bo *bo, int plane);
> + uint64_t (*bo_get_modifier)(struct gbm_bo *bo);
> void (*bo_destroy)(struct gbm_bo *bo);
>
> struct gbm_surface *(*surface_create)(struct gbm_device *gbm,
> --
> 2.12.0
>
>
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