Method DefineMacros

PBR/src/PBR_Renderer.cpp:1095–1329

}

ShaderMacroHelper PBR_Renderer::DefineMacros(const PSOKey& Key) const
{
    const PSO_FLAGS PSOFlags = Key.GetFlags();

    ShaderMacroHelper Macros;
    Macros.Add("MAX_JOINT_COUNT", static_cast<int>(m_Settings.MaxJointCount));
    Macros.Add("TONE_MAPPING_MODE", "TONE_MAPPING_MODE_UNCHARTED2");

    Macros.Add("PRIMITIVE_ARRAY_SIZE", static_cast<int>(m_Settings.PrimitiveArraySize));
    if (m_Settings.PrimitiveArraySize > 0)
    {
        const char* PrimitiveID = nullptr;
        if (m_Device.GetDeviceInfo().Features.NativeMultiDraw)
        {
            if (m_Device.GetDeviceInfo().IsGLDevice())
            {
#if PLATFORM_EMSCRIPTEN
                PrimitiveID = "gl_DrawID";
#else
                PrimitiveID = "gl_DrawIDARB";
#endif
            }
            else if (m_Device.GetDeviceInfo().IsVulkanDevice())
            {
#ifdef HLSL2GLSL_CONVERTER_SUPPORTED
                PrimitiveID = "gl_DrawID";
#else
                UNSUPPORTED("Primitive ID on Vulkan requires HLSL2GLSL converter");
                PrimitiveID = "0";
#endif
            }
            else
            {
                UNEXPECTED("Native multi-draw is only expected in GL and Vulkan");
                PrimitiveID = "0";
            }
        }
        else
        {
            // Use instance ID as primitive ID
            PrimitiveID = "int(VSIn.InstanceID)";
        }
        Macros.Add("PRIMITIVE_ID", PrimitiveID);
    }

    Macros.Add("PBR_WORKFLOW_METALLIC_ROUGHNESS", static_cast<int>(PBR_WORKFLOW_METALL_ROUGH));
    Macros.Add("PBR_WORKFLOW_SPECULAR_GLOSINESS", static_cast<int>(PBR_WORKFLOW_SPEC_GLOSS));
    Macros.Add("PBR_WORKFLOW_UNLIT", static_cast<int>(PBR_WORKFLOW_UNLIT));

    Macros.Add("PBR_ALPHA_MODE_OPAQUE", static_cast<int>(ALPHA_MODE_OPAQUE));
    Macros.Add("PBR_ALPHA_MODE_MASK", static_cast<int>(ALPHA_MODE_MASK));
    Macros.Add("PBR_ALPHA_MODE_BLEND", static_cast<int>(ALPHA_MODE_BLEND));
    Macros.Add("PBR_ALPHA_MODE", static_cast<int>(Key.GetAlphaMode()));

    Macros.Add("PBR_MAX_LIGHTS", (PSOFlags & PSO_FLAG_USE_LIGHTS) != 0 ? static_cast<int>(m_Settings.MaxLightCount) : 0);
    Macros.Add("PBR_LIGHT_TYPE_DIRECTIONAL", static_cast<int>(LIGHT_TYPE_DIRECTIONAL));
    Macros.Add("PBR_LIGHT_TYPE_POINT", static_cast<int>(LIGHT_TYPE_POINT));
    Macros.Add("PBR_LIGHT_TYPE_SPOT", static_cast<int>(LIGHT_TYPE_SPOT));