frontend/dri: Implement mapping individual planes.
It is kinda surprising that image2 = fromPlanar(image, 2, NULL) mapImage(..., image2, ...) does not map the third plane. This implements that behavior in the case where the DRI frontend lowers the multi-planar textures. In the case it doesn't this would need driver support. AFAIU at least etnaviv is impacted, and while it looks possible, I don't have the etnaviv knowledge to implement it. Instead of silently returning weird results (either always plane 0 or possibly something interleaved) this adds an error return on mapping multi-planar textures otherwise. Reviewed-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Eric Anholt <eric@anholt.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5200>
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@ -801,6 +801,7 @@ dri2_create_image_from_winsys(__DRIscreen *_screen,
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img->layer = 0;
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img->use = 0;
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img->loader_private = loaderPrivate;
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img->lowered_yuv = use_lowered;
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return img;
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}
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@ -1010,6 +1011,7 @@ dri2_create_image_common(__DRIscreen *_screen,
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img->dri_fourcc = map->dri_fourcc;
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img->dri_components = 0;
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img->use = use;
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img->lowered_yuv = false;
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img->loader_private = loaderPrivate;
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return img;
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@ -1260,6 +1262,7 @@ dri2_dup_image(__DRIimage *image, void *loaderPrivate)
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/* This should be 0 for sub images, but dup is also used for base images. */
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img->dri_components = image->dri_components;
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img->loader_private = loaderPrivate;
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img->lowered_yuv = image->lowered_yuv;
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return img;
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}
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@ -1542,20 +1545,30 @@ dri2_map_image(__DRIcontext *context, __DRIimage *image,
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struct dri_context *ctx = dri_context(context);
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struct pipe_context *pipe = ctx->st->pipe;
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enum pipe_transfer_usage pipe_access = 0;
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struct pipe_resource *resource = image->texture;
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struct pipe_transfer *trans;
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void *map;
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if (!image || !data || *data)
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return NULL;
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if (image->lowered_yuv) {
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unsigned plane = image->plane;
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if (plane >= dri2_get_mapping_by_format(image->dri_format)->nplanes)
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return NULL;
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while (plane--)
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resource = resource->next;
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} else if (dri2_get_mapping_by_format(image->dri_format)->nplanes > 1)
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return NULL;
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if (flags & __DRI_IMAGE_TRANSFER_READ)
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pipe_access |= PIPE_TRANSFER_READ;
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if (flags & __DRI_IMAGE_TRANSFER_WRITE)
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pipe_access |= PIPE_TRANSFER_WRITE;
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map = pipe_transfer_map(pipe, image->texture,
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0, 0, pipe_access, x0, y0, width, height,
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&trans);
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map = pipe_transfer_map(pipe, resource, 0, 0, pipe_access, x0, y0,
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width, height, &trans);
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if (map) {
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*data = trans;
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*stride = trans->stride;
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@ -106,6 +106,7 @@ struct __DRIimageRec {
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uint32_t dri_components;
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unsigned use;
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unsigned plane;
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bool lowered_yuv;
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void *loader_private;
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