How to check input/output data for shaders in Renderdoc?

How can I check whether my vertex and pixel shaders' input and output have data in Renderdoc?

I have a problem with my pixel shader when I try to include input color. I get a black screen. When I include 1.0f instead, it kind of works (it draws the shape in white)

Texture2D texture1;
//Texture2D texture2 : register(t1);
//Texture2D texture3 : register(t2);
//Texture2D texture4 : register(t3);

SamplerState Sampler;

struct PixelShaderInput
{
    float4 position : SV_POSITION;
    float3 normal : normal;
    float2 UV : UV;
    float4 WorldPosition : WorldPosition;
};


struct PixelShadeOutput
{
    float4 Color : SV_TARGET0; //Diffuse
    float4 normal : SV_TARGET1;
    float4 position : SV_TARGET2;
    //float4 WorldPosition : SV_TARGET3;
};

PixelShadeOutput main(PixelShaderInput input) : SV_TARGET
{
    PixelShadeOutput output;
    float4 TextureColor = texture1.Sample(Sampler, input.UV);
    output.Color = 1.0f;
    output.normal = float4(input.normal, 1.0f);
    output.position = input.WorldPosition;
    
    return output;
}