public override void Render(CommandBuffer cmd, ref RenderingData renderingData, PostProcessingRenderContext context)
{
if (!_shader)
{
return;
}
if (_material == null)
{
_material = new Material(_shader);
}
this.UpdateMaterialProperties();
var projMatrix = renderingData.cameraData.GetGPUProjectionMatrix();
_material.SetMatrix("CustomProjMatrix", projMatrix);
_material.SetMatrix("CustomInvProjMatrix", projMatrix.inverse);
if (_blur)
{
_material.EnableKeyword("_Blur");
}
else
{
_material.DisableKeyword("_Blur");
}
if (_blur)
{
var temp1 = context.GetTemporaryRT(cmd);
var temp2 = context.GetTemporaryRT(cmd);
_blitter.Prepare(temp1, temp2);
//first pass, calculate AO
_blitter.BlitAndSwap(cmd, _material, 0);
//second pass, blur horizantal
_blitter.BlitAndSwap(cmd, _material, 1);
//third pass, blur vertical
_blitter.BlitAndSwap(cmd, _material, 2);
cmd.SetGlobalTexture("_AOTex", _blitter.pingRT);
context.BlitAndSwap(cmd, _material, 3);
context.ReleaseTemporaryRT(cmd, temp1);
context.ReleaseTemporaryRT(cmd, temp2);
}
else
{
context.BlitAndSwap(cmd, _material);
}
}
public override void Render(CommandBuffer cmd, ref RenderingData renderingData, PostProcessingRenderContext context)
{
if (!_shader)
{
return;
}
if (!_material)
{
_material = new Material(_shader);
}
if (_debug)
{
_material.EnableKeyword("_BloomDebug");
}
else
{
_material.DisableKeyword("_BloomDebug");
}
_material.SetFloat("_Threshold", _threshold);
var descriptor = context.sourceRenderTextureDescriptor;
var temp1 = context.GetTemporaryRT(cmd, descriptor, FilterMode.Bilinear);
//first pass，提取光亮部分
cmd.Blit(context.activeRenderTarget, temp1, _material, 0);
//模糊处理
_blurBlitter.SetSource(temp1, descriptor);
_blurBlitter.downSample = downSample;
_blurBlitter.iteratorCount = _blurIteratorCount;
_blurBlitter.blurType = BlurType.Box;
_blurBlitter.Render(cmd);
cmd.SetGlobalTexture("_BloomTex", temp1);
//combine
context.BlitAndSwap(cmd, _material, 3);
context.ReleaseTemporaryRT(cmd, temp1);
}
