Very long compile times through the API

[cyanreg]

Hi,

For the two attached compute shaders, using the API to compile takes about a full minute.

    const glslang_input_t glslc_input = {
        .language                          = GLSLANG_SOURCE_GLSL,
        .stage                             = glslc_stage[shd->stage],
        .client                            = GLSLANG_CLIENT_VULKAN,
        .client_version                    = GLSLANG_TARGET_VULKAN_1_3,
        .target_language_version           = GLSLANG_TARGET_SPV_1_6,
        .target_language                   = GLSLANG_TARGET_SPV,
        .code                              = shd->src.str,
        .default_version                   = 460,
        .default_profile                   = GLSLANG_NO_PROFILE,
        .force_default_version_and_profile = false,
        .forward_compatible                = false,
        .messages                          = GLSLANG_MSG_DEFAULT_BIT,
        .resource                          = &glslc_resource_limits,
    };

    glslang_spv_options_t glslc_opts = {
        .generate_debug_info = 1,
        .emit_nonsemantic_shader_debug_info = 1,
        .emit_nonsemantic_shader_debug_source = 1,
        .disable_optimizer = 0,
        .strip_debug_info = 0,
        .optimize_size = 0,
        .disassemble = 0,
        .validate = 1,
        .compile_only = 0,
    };

    glslang_shader_create()

    glslang_shader_preprocess()

    glslang_shader_parse()

    glslang_program_create()

    glslang_program_add_shader()

    glslang_program_link()

    glslang_program_SPIRV_generate_with_options()

slow.txt
slow2.txt

Using the compile time is much faster. But we build and compile our shaders during runtime. Hence a minute is unacceptable.