avfilter: add a blend_vulkan filter

This commit adds a blend_vulkan filter and a normal blend mode, and
reserves support for introducing the blend modes in the future.

Use the commands below to test: (href: https://trac.ffmpeg.org/wiki/Blend)
I. make an image for test
ffmpeg -f lavfi -i color=s=256x256,geq=r='H-1-Y':g='H-1-Y':b='H-1-Y' -frames 1 \
-y -pix_fmt yuv420p test.jpg

II. blend in sw
ffmpeg -i test.jpg -vf "split[a][b];[b]transpose[b];[a][b]blend=all_mode=normal,\
pseudocolor=preset=turbo" -y normal_sw.jpg

III. blend in vulkan
ffmpeg -init_hw_device vulkan -i test.jpg -vf "split[a][b];[b]transpose[b];\
[a]hwupload[a];[b]hwupload[b];[a][b]blend_vulkan=all_mode=normal,hwdownload,\
format=yuv420p,pseudocolor=preset=turbo" -y normal_vulkan.jpg

Signed-off-by: Wu Jianhua <jianhua.wu@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index 8392c26015..f113f8f4ec 100755
--- a/configure
+++ b/configure
@@ -3616,6 +3616,7 @@ avgblur_opencl_filter_deps="opencl"
 avgblur_vulkan_filter_deps="vulkan spirv_compiler"
 azmq_filter_deps="libzmq"
 blackframe_filter_deps="gpl"
+blend_vulkan_filter_deps="vulkan spirv_compiler"
 bm3d_filter_deps="avcodec"
 bm3d_filter_select="dct"
 boxblur_filter_deps="gpl"