On 17/12/2024 12:04, Lynne via ffmpeg-devel wrote:
On 17/12/2024 11:42, Zhao Zhili wrote:


On Dec 17, 2024, at 09:12, Lynne via ffmpeg-devel <ffmpeg- de...@ffmpeg.org> wrote:

On 16/12/2024 20:55, Zhao Zhili wrote:
From: Zhao Zhili <zhiliz...@tencent.com>
compile_only was added since glslang 13.1.0.
---
  libavutil/vulkan_glslang.c | 2 ++
  1 file changed, 2 insertions(+)
diff --git a/libavutil/vulkan_glslang.c b/libavutil/vulkan_glslang.c
index 9e1b8f4d8d..9e7a33223b 100644
--- a/libavutil/vulkan_glslang.c
+++ b/libavutil/vulkan_glslang.c
@@ -192,7 +192,9 @@ static int glslc_shader_compile(FFVulkanContext *s, FFVkSPIRVCompiler *ctx,
          .optimize_size = 0,
          .disassemble = 0,
          .validate = 1,
+#if ((GLSLANG_VERSION_MAJOR) >= 14)
          .compile_only = 0,
+#endif
      };
  #endif


The changelog reads:

Release 13.1.1
    Initialize compile_only field in C interface

That’s for a variable inside the implementation of glslang_program_SPIRV_generate()

https://github.com/KhronosGroup/glslang/commit/ fd1f96d2020496760290e5cef5d68ae83e5dd5c4

While we are using glslang_program_SPIRV_generate_with_options().

We can’t just check less than 13.1.1, as the compile_only was added since 13.1.0. But we can just remove “.compile_only = 0”, and let default initialization kick in. Keep the explicit initialize of compile_only is for clarity. I can remove it if you prefer clean and less conditional compile.


It's initialized to 0 in the new version.
https://github.com/KhronosGroup/glslang/commit/ fd1f96d2020496760290e5cef5d68ae83e5dd5c4

Shouldn't this check for the version being **less than** 13.1.1?
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Ah, I see.
We should just keep it as-is. We'll never be using compile-only without linking.

Besides, the plan is to switch to Slang as soon as its viable and rm -rf all glslang/shaderc compilation code.

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*by that I mean just omitting the setting and using default 0-initialization.
Could you send a patch to comment the line out, something like:
/* .compile_only = 0, */

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