public abstract void Render(MatCapSnapshot matCapSnapshot, LightingRig lightingRig, CameraRuntimeRef cameraRef);
private Vector3 GetRayDirection(float width, float col, float height, float row, CameraRuntimeRef cameraRef)
{
return(new Vector3(col / width - 0.5f, row / height - 0.5f, _distanceToSphere).normalized);
}
public override void Render(MatCapSnapshot matCapSnapshot, LightingRig lightingRig, CameraRuntimeRef cameraRef)
{
// #TODO Implement compute shader version
}
// TODO: implement split texture rendering for Diffuse, Alpha & Specular (now supported only Combined)
// TODO: implement viriable view position (now supported only along Z axis)
public override void Render(MatCapSnapshot matCapSnapshot, LightingRig lightingRig, CameraRuntimeRef cameraRef)
{
Texture2D combined = matCapSnapshot.Combined;
Color[] pixels = combined.GetPixels();
// Min distance to sphere caluclated according to texel size
float epsilon = GetEpsilon(combined.width, combined.height);
// Pixels layed out left to right, bottom to top
for (int row = combined.height - 1; row >= 0; row--)
{
for (int col = 0; col < combined.width; col++)
{
var rayData = new RayData();
rayData.RayDirection = GetRayDirection(combined.width, col, combined.height, row, cameraRef);
rayData.LightingRig = lightingRig;
rayData.EyePosition = new Vector3(0, 0, -_distanceToSphere);
rayData.Epsilon = epsilon;
// TODO: use new Unity data oriented desing with ECS and Burst
// This task could be parallelized
int index = row * combined.width + col;
pixels[index] = RenderRay(rayData);
}
}
combined.SetPixels(pixels);
combined.Apply();
}
