create_from_spirv_asm()

bool MayaFlux::Core::VKShaderModule::create_from_spirv_asm	(	vk::Device	device,
		const std::string &	spirv_asm,
		vk::ShaderStageFlagBits	stage,
		const std::string &	entry_point = "main",
		bool	enable_reflection = true
	)

Create shader module from SPIR-V assembly text.

Assembles human-readable SPIR-V opcodes to binary via spvTextToBinary targeting Vulkan 1.3, then delegates to create_from_spirv(). Does not require shaderc or any GLSL toolchain.

Parameters

device	Logical device.
spirv_asm	SPIR-V assembly text.
stage	Shader stage.
entry_point	Entry point function name (default: "main").
enable_reflection	Extract descriptor bindings and resources.

Returns

true if assembly and module creation succeeded.

Definition at line 289 of file VKShaderModule.cpp.

{
    spv_context ctx = spvContextCreate(SPV_ENV_VULKAN_1_3);
    spv_binary binary = nullptr;
    spv_diagnostic diag = nullptr;
 
    const spv_result_t result = spvTextToBinary(
        ctx,
        spirv_asm.c_str(),
        spirv_asm.size(),
        &binary,
        &diag);
 
    if (result != SPV_SUCCESS) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "SPIR-V assembly failed: {}",
            (diag && diag->error) ? diag->error : "unknown error");
        spvDiagnosticDestroy(diag);
        spvContextDestroy(ctx);
        return false;
    }
 
    std::vector<uint32_t> words(binary->code, binary->code + binary->wordCount);
 
    spvBinaryDestroy(binary);
    spvDiagnosticDestroy(diag);
 
    spv_const_binary_t bin { .code = words.data(), .wordCount = words.size() };
    spv_diagnostic val_diag = nullptr;
    const spv_result_t val = spvValidate(ctx, &bin, &val_diag);
    if (val != SPV_SUCCESS) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "SPIR-V validation failed: {}",
            (val_diag && val_diag->error) ? val_diag->error : "unknown");
        spvDiagnosticDestroy(val_diag);
        spvContextDestroy(ctx);
        return false;
    }
    spvDiagnosticDestroy(val_diag);
    spvContextDestroy(ctx);
 
    MF_DEBUG(Journal::Component::Core, Journal::Context::GraphicsBackend,
        "Assembled and validated SPIR-V ({} words)", words.size());
 
    return create_from_spirv(device, words, stage, entry_point, enable_reflection);
}

References MayaFlux::Journal::Core, create_from_spirv(), MayaFlux::Journal::GraphicsBackend, MF_DEBUG, and MF_ERROR.

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