public void Init(PostProcessChain parent, string shader_name)
{
if (_inited)
{
return;
}
_parent = parent;
_shader = PostProcessChain.GetShader(shader_name);
if (_shader != null)
{
_material = new Material(_shader);
}
if (_material == null)
{
Common.HobaDebuger.LogErrorFormat("PostProcessItem Init Failed: {0}", shader_name);
}
OnInit();
//enabled = false;
_inited = true;
}
void Render(RenderTexture src, RenderTexture dest)
{
if (_material == null)
{
Shader shader = PostProcessChain.GetShader("Hidden/PostProcessing/BloomHD");
if (shader == null)
{
Graphics.Blit(src, dest);
return;
}
_material = new Material(shader);
}
var threshold = Mathf.GammaToLinearSpace(Threshold);
_material.SetFloat(_ThresholdId, threshold);
float SoftKnee = SoftKneeA;
var knee = threshold * SoftKnee + 1e-5f;
var curve = new Vector3(threshold - knee, knee * 2, 0.25f / knee);
_material.SetVector(_CurveId, curve);
float sampleRadius = Radius;
_material.SetFloat(_UpSampleScaleId, sampleRadius);
_material.SetFloat(_IntensityId, Intensity);
RenderTextureFormat rtFormat = RenderTextureFormat.DefaultHDR;
int filterTexWidth = Screen.width >> _Level;
int filterTexHeight = Screen.height >> _Level;
RenderTexture filter_texture = RenderTexture.GetTemporary(filterTexWidth, filterTexHeight, 0, rtFormat);
filter_texture.name = "filter_texture";
RenderTexture blend_texture = RenderTexture.GetTemporary(filterTexWidth, filterTexHeight, 0, rtFormat);
blend_texture.name = "blend_texture";
// 注意：WithFlicker 字面意思与实际作用正好相反
Graphics.Blit(src, filter_texture, _material, WithFlicker ? (int)BloomHDPass.Bright : (int)BloomHDPass.BrightWithFlicker);
int levelWidth = filterTexWidth >> 1;
int levelHeight = filterTexHeight >> 1;
for (int i = 0; i < 16; ++i)
{
rtCache[i] = null;
rtCache1[i] = null;
}
RenderTexture last = filter_texture;
// down sample
int it = 0;
for (; it < _Iteration && levelWidth >= 4 && levelHeight >= 4; ++it)
{
rtCache[it] = RenderTexture.GetTemporary(levelWidth, levelHeight, 0, rtFormat);
rtCache[it].name = "rtCache";
// 注意：WithFlicker 字面意思与实际作用正好相反
Graphics.Blit(last, rtCache[it], _material, WithFlicker ? (int)BloomHDPass.Downsample : (int)BloomHDPass.DownsampleWithFlicker);
levelWidth = levelWidth >> 1;
levelHeight = levelHeight >> 1;
last = rtCache[it];
}
// up sampler
for (int i = it - 2; i >= 0; i--)
{
rtCache1[i] = RenderTexture.GetTemporary(rtCache[i].width, rtCache[i].height, 0, rtFormat);
rtCache1[i].name = "rtCache1";
_material.SetTexture(_BloomTexId, rtCache[i]);
Graphics.Blit(last, rtCache1[i], _material, (int)BloomHDPass.Upsample);
last = rtCache1[i];
}
_material.SetTexture(_BloomTexId, filter_texture);
// blend
RenderTexture rt = rtCache1[0] == null ? last : rtCache1[0];
Graphics.Blit(rt, blend_texture, _material, (int)BloomHDPass.Blend);
//_material.
_material.SetTexture(_BloomTexId, blend_texture);
Graphics.Blit(src, dest, _material, (int)BloomHDPass.Final);
RenderTexture.ReleaseTemporary(blend_texture);
RenderTexture.ReleaseTemporary(filter_texture);
for (int i = 0; i < 16; ++i)
{
if (rtCache[i] != null)
{
RenderTexture.ReleaseTemporary(rtCache[i]);
}
if (rtCache1[i] != null)
{
RenderTexture.ReleaseTemporary(rtCache1[i]);
}
}
}