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hwcontext_vulkan: correctly download and upload flipped images

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We derive the destination buffer stride from the input stride,
which meant if the image was flipped with a negative stride,
we'd be FFALIGNING a negative number which ends up being huge,
thus making the Vulkan buffer allocation fail and the whole
image transfer fail.

Only found out about this as OpenGL compositors can copy an entire
image with a single call if its flipped, rather than iterate over
each line.
This commit is contained in:
Lynne 2020-04-21 18:55:24 +01:00
parent 8a4fda029a
commit e3c7b22451
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GPG Key ID: A2FEA5F03F034464
1 changed files with 2 additions and 2 deletions
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libavutil/hwcontext_vulkan.c
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@ -2638,7 +2638,7 @@ static int vulkan_transfer_data_from_mem(AVHWFramesContext *hwfc, AVFrame *dst,
int h = src->height;
int p_height = i > 0 ? AV_CEIL_RSHIFT(h, log2_chroma) : h;
tmp.linesize[i] = src->linesize[i];
tmp.linesize[i] = FFABS(src->linesize[i]);
err = create_buf(dev_ctx, &buf[i], p_height,
&tmp.linesize[i], VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, NULL, NULL);
@ -2793,7 +2793,7 @@ static int vulkan_transfer_data_to_mem(AVHWFramesContext *hwfc, AVFrame *dst,
int h = dst->height;
int p_height = i > 0 ? AV_CEIL_RSHIFT(h, log2_chroma) : h;
tmp.linesize[i] = dst->linesize[i];
tmp.linesize[i] = FFABS(dst->linesize[i]);
err = create_buf(dev_ctx, &buf[i], p_height,
&tmp.linesize[i], VK_BUFFER_USAGE_TRANSFER_DST_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, NULL, NULL);