private void GaussianBlur(POSTFX_GAUSSIAN_BLUR_DIRECTION dir, POSTFX_GUASSIAN_BLUR_MODE mode, RenderTexture src, RenderTexture dst, float sigma, float ramp = 1.0f)
{
_GaussianBlurMaterial.SetVector("_BlurKernel", GenerateGaussianBlurKernel(mode, sigma));
if (dir == POSTFX_GAUSSIAN_BLUR_DIRECTION.HORIZONTAL)
{
_GaussianBlurMaterial.SetVector("_StepSize", new Vector2(_GBlurModifier / src.width, 0.0f));
}
else
{
_GaussianBlurMaterial.SetVector("_StepSize", new Vector2(0.0f, _GBlurModifier / src.height));
}
if (mode == POSTFX_GUASSIAN_BLUR_MODE.TAP_7_RAMP || mode == POSTFX_GUASSIAN_BLUR_MODE.TAP_3_RAMP)
{
_GaussianBlurMaterial.SetFloat("_Ramp", ramp);
}
Graphics.Blit(src, dst, _GaussianBlurMaterial, (int)mode);
}
private static Vector4 GenerateGaussianBlurKernel(POSTFX_GUASSIAN_BLUR_MODE mode, float sigma)
{
float lowEndFake = 1.0f;
if (GameFlowControlManager.Instance == null || GameFlowControlManager.Instance.m_StateMachine == null)
{
}
else
{
PerformanceInfo.ePOSTFX_QUALITY fxquality = PerformanceManager.Instance.PerformanceInfo.EnvironmentInfoForScene(GameFlowControlManager.Instance.m_StateMachine.ActiveStateName).postFXQuality;
if (fxquality == PerformanceInfo.ePOSTFX_QUALITY.Medium)
{
lowEndFake *= 1.8f;
}
}
sigma *= lowEndFake;
// any questions about the fake values in rendersettings,find hank.
Vector4 res = Vector4.zero;
if (mode == POSTFX_GUASSIAN_BLUR_MODE.TAP_3 || mode == POSTFX_GUASSIAN_BLUR_MODE.TAP_3_RAMP)
{
res.x = Mathf.Exp(-0.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
res.y = Mathf.Exp(-1.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
float t = res.y + res.x + res.y;
res /= t;
}
else
{
res.x = Mathf.Exp(-0.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
res.y = Mathf.Exp(-1.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
res.z = Mathf.Exp(-4.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
res.w = Mathf.Exp(-9.0f / (2.0f * sigma * sigma)) / (2.0f * Mathf.PI * sigma * sigma);
float t = res.w + res.z + res.y + res.x + res.y + res.z + res.w;
res /= t;
}
return(res);
}
