Method Compile

Source/Engine/ShadersCompilation/ShaderCompiler.cpp:32–91

}

bool ShaderCompiler::Compile(ShaderCompilationContext* context)
{
    // Clear cache
    _globalMacros.Clear();
    _macros.Clear();
    _constantBuffers.Clear();
    _globalMacros.EnsureCapacity(32);
    _macros.EnsureCapacity(32);
    _context = context;

    // Prepare
    auto output = context->Output;
    auto meta = context->Meta;
    const int32 shadersCount = meta->GetShadersCount();
    if (OnCompileBegin())
        return true;
    _globalMacros.Add({ nullptr, nullptr });

    // Setup constant buffers cache
    _constantBuffers.EnsureCapacity(meta->CB.Count(), false);
    for (int32 i = 0; i < meta->CB.Count(); i++)
        _constantBuffers.Add({ meta->CB[i].Slot, false, 0 });

    // [Output] Version number
    output->WriteInt32(GPU_SHADER_CACHE_VERSION);

    // [Output] Additional data start
    const int32 additionalDataStartPos = output->GetPosition();
    output->WriteInt32(-1);

    // [Output] Amount of shaders
    output->WriteInt32(shadersCount);

    // Compile all shaders
    if (CompileShaders())
        return true;

    // [Output] Constant Buffers
    output->Write((byte)_constantBuffers.Count());
    for (const ShaderResourceBuffer& cb : _constantBuffers)
    {
        output->Write((byte)cb.Slot);
        output->Write((uint32)cb.Size);
    }

    // Additional Data Start
    *(int32*)(output->GetHandle() + additionalDataStartPos) = output->GetPosition();

    // [Output] Includes
    output->WriteInt32(context->Includes.Count());
    for (auto& include : context->Includes)
    {
        String compactPath = ShadersCompilation::CompactShaderPath(include.Item);
        output->Write(compactPath, 11);
        const auto date = FileSystem::GetFileLastEditTime(include.Item);
        output->Write(date);
    }