[tirarex]

Мой семпл BPCM (Box Projected Cube Map)


Автогенератор нормалей (Приятная мелочь)

float3 AutoNormalGen(sampler2D sample,float2 texCoord) {
float off = 1.0 / 512;
float4 lightness = float4(0.2,0.59,0.11,0);
// Take all neighbor samples
float4 s00 = tex2D(sample, texCoord + float2(-off, -off));
float4 s01 = tex2D(sample, texCoord + float2( 0, -off));
float4 s02 = tex2D(sample, texCoord + float2( off, -off));

float4 s10 = tex2D(sample, texCoord + float2(-off, 0));
float4 s12 = tex2D(sample, texCoord + float2( off, 0));

float4 s20 = tex2D(sample, texCoord + float2(-off, off));
float4 s21 = tex2D(sample, texCoord + float2( 0, off));
float4 s22 = tex2D(sample, texCoord + float2( off, off));

// Slope in X direction
float4 sobelX = s00 + 2 * s10 + s20 - s02 - 2 * s12 - s22;
// Slope in Y direction
float4 sobelY = s00 + 2 * s01 + s02 - s20 - 2 * s21 - s22;

// Weight the slope in all channels, we use grayscale as height
float sx = dot(sobelX, lightness);
float sy = dot(sobelY, lightness);

// Compose the normal
float3 normal = normalize(float3(sx, sy, 1));

// Pack [-1, 1] into [0, 1]
return normal * 0.5 + 0.5;
}