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ffv1enc_vulkan: allocate a device-only output buffer if possible

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This avoids needing to map HUGE 4GiB chunks of memory.
This commit is contained in:
Lynne
2026-02-14 16:37:25 +01:00
parent 4b6396a49b
commit b19707103e
1 changed files with 12 additions and 5 deletions
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17
libavcodec/ffv1enc_vulkan.c
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@@ -237,16 +237,23 @@ static int vulkan_encode_ffv1_submit_frame(AVCodecContext *avctx,
maxsize = FFMIN(maxsize, fv->s.props_11.maxMemoryAllocationSize);
/* Allocate output buffer */
VkMemoryPropertyFlagBits out_buf_flags;
if (maxsize < fv->max_heap_size) {
out_buf_flags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
/* If we can't map host memory, we can't let the GPU copy its buffer. */
if (!fv->s.extensions & FF_VK_EXT_EXTERNAL_HOST_MEMORY)
out_buf_flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
} else {
out_buf_flags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
fv->s.host_cached_flag;
}
RET(ff_vk_get_pooled_buffer(&fv->s, &fv->out_data_pool,
&fd->out_data_ref,
VK_BUFFER_USAGE_TRANSFER_SRC_BIT |
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT |
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT,
NULL, maxsize,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
(maxsize < fv->max_heap_size ?
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT :
fv->s.host_cached_flag)));
NULL, maxsize, out_buf_flags));
out_data_buf = (FFVkBuffer *)fd->out_data_ref->data;
/* Image views */