public Texture Apply(Texture2D fogtexture, Vector2i resolution, int amount, int iterations, FogOfWarBlurType type)
{
if (amount <= 0 || iterations <= 0)
{
return(fogtexture);
}
if (_blurMaterial == null)
{
_blurMaterial = new Material(Shader.Find("Hidden/FogOfWarBlurShader"));
}
_blurMaterial.SetFloat("_BlurAmount", amount);
_blurMaterial.SetKeywordEnabled("GAUSSIAN3", type == FogOfWarBlurType.Gaussian3);
_blurMaterial.SetKeywordEnabled("GAUSSIAN5", type == FogOfWarBlurType.Gaussian5);
_blurMaterial.SetKeywordEnabled("ANTIALIAS", type == FogOfWarBlurType.Antialias);
SetupRenderTarget(resolution, ref _target);
if (iterations > 1)
{
SetupRenderTarget(resolution, ref _source);
}
RenderTexture lastrt = RenderTexture.active;
RenderTexture.active = _target;
Graphics.Blit(fogtexture, _blurMaterial);
for (int i = 1; i < iterations; ++i)
{
FogOfWarUtils.Swap(ref _target, ref _source);
RenderTexture.active = _target;
Graphics.Blit(_source, _blurMaterial);
}
RenderTexture.active = lastrt;
return(_target);
}
