PureBasic Forums - English

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material BlackBorderMaterial
{
    technique
    {
        pass
        {
            ambient 1 0 0
            diffuse 1 0 0
            specular 1.0 1.0 0.0
            vertex_program_ref BlackBorderVertexShader
            {
                param_named_auto worldViewProj worldviewproj_matrix
            }

            fragment_program_ref BlackBorderFragmentShader
            {
            }
        }
    }
}

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float4x4 worldViewProj : WORLDVIEWPROJ;

struct VS_INPUT
{
    float4 position : POSITION;
};

struct PS_INPUT
{
    float4 position : POSITION;
};

VS_INPUT vs_main(VS_INPUT input)
{
    VS_INPUT output = (VS_INPUT)0;
    output.position = mul(worldViewProj, input.position);
    return output;
}

float4 ps_main(PS_INPUT input) : COLOR
{
    float2 screenPos = input.position.xy / input.position.w;
    float thickness = 10.0 / 800.0; // Grosor del borde en píxeles, ajustado por la resolución de la pantalla
    float border = step(thickness, length(screenPos - 0.5));
    return float4(0, 0, 0, 1) * border; // Color del borde (negro)
}

technique BlackBorder
{
    pass P0
    {
        VertexShader = compile vs_2_0 vs_main();
        PixelShader = compile ps_2_0 ps_main();
    }
}

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cbuffer cbPerFrame : register(b0)
{
	float4x4 matVP;
	float4x4 matGeo;
};

struct VSInput
{
	float3 Position : POSITION;
	float3 Normal : NORMAL;
};

struct VSOutput
{
	float4 Position : SV_POSITION;
	float4 Color : COLOR;
	float3 Normal : NORMAL;
};
		
VSOutput main(VSInput vin)
{
	VSOutput vout = (VSOutput)0;
	
	vout.Position = mul(mul(float4(vin.Position, 1), matGeo), matVP);
	vout.Color = float4(1,0,0, 1);
	vout.Normal = vin.Normal;
	
	return vout;
}

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struct PSInput
{
	float4 Position : SV_POSITION;
	float4 Color : COLOR;
	float3 Normal : NORMAL;
};

struct PSOutput
{
	float4 Color : SV_TARGET0;
	float4 Normal : SV_TARGET1;
};

PSOutput main(PSInput pin)
{
	PSOutput pout;
	
	pout.Color = pin.Color;
	pout.Normal = float4(pin.Normal,1);
	
	return pout;
}