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vulkan: download buffer to MemPtr

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This commit is contained in:
columbarius 2023-08-10 03:15:11 +02:00 • committed by Wim Taymans
parent 73d6c20225
commit 00c475e646
3 changed files with 64 additions and 1 deletions
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28
spa/plugins/vulkan/vulkan-utils.c
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@ -338,6 +338,34 @@ static void destroyFormatInfo(struct vulkan_base *s)
s->formatInfoCount = 0;
}
int vulkan_read_pixels(struct vulkan_base *s, struct vulkan_read_pixels_info *info, struct vulkan_buffer *vk_buf)
{
VkImageSubresource img_sub_res = {
.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
.arrayLayer = 0,
.mipLevel = 0,
};
VkSubresourceLayout img_sub_layout;
vkGetImageSubresourceLayout(s->device, vk_buf->image, &img_sub_res, &img_sub_layout);
void *v;
VK_CHECK_RESULT(vkMapMemory(s->device, vk_buf->memory, 0, VK_WHOLE_SIZE, 0, &v));
const char *d = (const char *)v + img_sub_layout.offset;
unsigned char *p = (unsigned char *)info->data + info->offset;
uint32_t bytes_per_pixel = 16;
uint32_t pack_stride = img_sub_layout.rowPitch;
if (pack_stride == info->stride) {
memcpy(p, d, info->stride * info->size.height);
} else {
for (uint32_t i = 0; i < info->size.height; i++) {
memcpy(p + i * info->stride, d + i * pack_stride, info->size.width * bytes_per_pixel);
}
}
vkUnmapMemory(s->device, vk_buf->memory);
return 0;
}
int vulkan_sync_foreign_dmabuf(struct vulkan_base *s, struct vulkan_buffer *vk_buf)
{
VULKAN_INSTANCE_FUNCTION(vkImportSemaphoreFdKHR);