private void RenderSSAO(AOHistoryData historyData, PipelineCamera cam, ref PipelineCommandData data)
{
CommandBuffer buffer = data.buffer;
int2 renderResolution = int2(cam.cam.pixelWidth, cam.cam.pixelHeight);
buffer.GetTemporaryRT(_GTAO_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Bilinear, RenderTextureFormat.RGHalf, RenderTextureReadWrite.Linear);
buffer.GetTemporaryRT(_BentNormal_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Bilinear, RenderTextureFormat.ARGBHalf, RenderTextureReadWrite.Linear);
AO_BentNormal_ID[0] = _GTAO_Texture_ID;
AO_BentNormal_ID[1] = _BentNormal_Texture_ID;
//Resolve GTAO
buffer.BlitMRT(AO_BentNormal_ID, cam.targets.renderTargetIdentifier, GTAOMaterial, 0);
//Spatial filter
//------//XBlur
buffer.GetTemporaryRT(_GTAO_Spatial_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Point, RenderTextureFormat.RGHalf);
buffer.BlitSRTWithDepth(_GTAO_Spatial_Texture_ID, cam.targets.depthBuffer, GTAOMaterial, 1);
//------//YBlur
buffer.CopyTexture(_GTAO_Spatial_Texture_ID, AO_BentNormal_ID[0]);
buffer.BlitSRTWithDepth(_GTAO_Spatial_Texture_ID, cam.targets.depthBuffer, GTAOMaterial, 2);
//Temporal filter
buffer.SetGlobalTexture(_PrevRT_ID, historyData.prev_Texture);
buffer.GetTemporaryRT(_CurrRT_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Point, RenderTextureFormat.RGHalf);
buffer.BlitSRTWithDepth(_CurrRT_ID, cam.targets.depthBuffer, GTAOMaterial, 3);
buffer.CopyTexture(_CurrRT_ID, historyData.prev_Texture);
buffer.ReleaseTemporaryRT(_GTAO_Spatial_Texture_ID);
buffer.ReleaseTemporaryRT(_CurrRT_ID);
buffer.ReleaseTemporaryRT(_Combien_AO_RT_ID);
buffer.ReleaseTemporaryRT(_GTAO_Texture_ID);
buffer.ReleaseTemporaryRT(_BentNormal_Texture_ID);
buffer.SetGlobalTexture(ShaderIDs._AOROTexture, historyData.prev_Texture);
}
public override void FrameUpdate(PipelineCamera cam, ref PipelineCommandData data)
{
AOHistoryData historyData = IPerCameraData.GetProperty(cam, (c) => new AOHistoryData(c.cam.pixelWidth, c.cam.pixelHeight), this);
UpdateVariable_SSAO(historyData, cam, ref data);
RenderSSAO(historyData, cam, ref data);
}
private void RenderSSAO(AOHistoryData historyData, PipelineCamera cam, ref PipelineCommandData data, int2 renderResolution, int2 originResolution)
{
CommandBuffer buffer = data.buffer;
buffer.GetTemporaryRT(_GTAO_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Bilinear, RenderTextureFormat.RGHalf, RenderTextureReadWrite.Linear);
buffer.GetTemporaryRT(_BentNormal_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Bilinear, RenderTextureFormat.ARGBHalf, RenderTextureReadWrite.Linear);
AO_BentNormal_ID[0] = _GTAO_Texture_ID;
AO_BentNormal_ID[1] = _BentNormal_Texture_ID;
//Resolve GTAO
buffer.BlitMRT(AO_BentNormal_ID, _GTAO_Texture_ID, GTAOMaterial, 0);
//Spatial filter
//------//XBlur
buffer.GetTemporaryRT(_GTAO_Spatial_Texture_ID, renderResolution.x, renderResolution.y, 0, FilterMode.Point, RenderTextureFormat.RGHalf);
buffer.BlitSRT(_GTAO_Spatial_Texture_ID, GTAOMaterial, 1);
//------//YBlur
buffer.CopyTexture(_GTAO_Spatial_Texture_ID, AO_BentNormal_ID[0]);
buffer.BlitSRT(_GTAO_Spatial_Texture_ID, GTAOMaterial, 2);
buffer.GetTemporaryRT(_UpSampleRT, renderResolution.x, renderResolution.y, 0, FilterMode.Point, RenderTextureFormat.RGHalf);
buffer.BlitSRT(_UpSampleRT, GTAOMaterial, 4);
//Temporal filter
buffer.SetGlobalTexture(_PrevRT_ID, historyData.prev_Texture);
buffer.GetTemporaryRT(_CurrRT_ID, originResolution.x, originResolution.y, 0, FilterMode.Point, RenderTextureFormat.RGHalf);
buffer.BlitSRT(_CurrRT_ID, GTAOMaterial, 3);
buffer.CopyTexture(_CurrRT_ID, historyData.prev_Texture);
buffer.ReleaseTemporaryRT(_GTAO_Spatial_Texture_ID);
buffer.ReleaseTemporaryRT(_CurrRT_ID);
buffer.ReleaseTemporaryRT(_UpSampleRT);
buffer.ReleaseTemporaryRT(_GTAO_Texture_ID);
buffer.ReleaseTemporaryRT(_BentNormal_Texture_ID);
buffer.SetGlobalTexture(ShaderIDs._AOROTexture, historyData.prev_Texture);
// buffer.Blit(historyData.prev_Texture, BuiltinRenderTextureType.CameraTarget, debugMat, 0);
}
////////////////////////SSAO Function////////////////////////
private void UpdateVariable_SSAO(AOHistoryData historyData, PipelineCamera cam, ref PipelineCommandData data)
{
CommandBuffer buffer = data.buffer;
int2 renderResolution = int2(cam.cam.pixelWidth, cam.cam.pixelHeight);
buffer.SetGlobalMatrix(ShaderIDs._VP, data.vp);
buffer.SetGlobalMatrix(_WorldToCameraMatrix_ID, cam.cam.worldToCameraMatrix);
buffer.SetGlobalMatrix(_CameraToWorldMatrix_ID, cam.cam.cameraToWorldMatrix);
buffer.SetGlobalMatrix(_ProjectionMatrix_ID, GL.GetGPUProjectionMatrix(cam.cam.projectionMatrix, false));;
buffer.SetGlobalMatrix(_View_ProjectionMatrix_ID, data.vp);
buffer.SetGlobalMatrix(_Inverse_View_ProjectionMatrix_ID, data.inverseVP);
buffer.SetGlobalMatrix(_LastFrameViewProjectionMatrix_ID, propertySetEvent.lastViewProjection);
//----------------------------------------------------------------------------------
buffer.SetGlobalFloat(_AO_DirSampler_ID, DirSampler);
buffer.SetGlobalFloat(_AO_SliceSampler_ID, SliceSampler);
buffer.SetGlobalFloat(_AO_Intensity_ID, Intensity);
buffer.SetGlobalFloat(_AO_Radius_ID, Radius);
buffer.SetGlobalFloat(_AO_Power_ID, Power);
buffer.SetGlobalFloat(_AO_Sharpeness_ID, Sharpeness);
buffer.SetGlobalFloat(_AO_TemporalScale_ID, TemporalScale);
buffer.SetGlobalFloat(_AO_TemporalResponse_ID, TemporalResponse);
buffer.SetGlobalInt(_AO_MultiBounce_ID, MultiBounce ? 1 : 0);
//----------------------------------------------------------------------------------
float fovRad = cam.cam.fieldOfView * Mathf.Deg2Rad;
float invHalfTanFov = 1 / Mathf.Tan(fovRad * 0.5f);
Vector2 focalLen = new Vector2(invHalfTanFov * ((float)renderResolution.y / (float)renderResolution.x), invHalfTanFov);
Vector2 invFocalLen = new Vector2(1 / focalLen.x, 1 / focalLen.y);
buffer.SetGlobalVector(_AO_UVToView_ID, new Vector4(2 * invFocalLen.x, 2 * invFocalLen.y, -1 * invFocalLen.x, -1 * invFocalLen.y));
//----------------------------------------------------------------------------------
float projScale;
projScale = renderResolution.y / (Mathf.Tan(fovRad * 0.5f) * 2) * 0.5f;
buffer.SetGlobalFloat(_AO_HalfProjScale_ID, projScale);
//----------------------------------------------------------------------------------
oneOverSize_Size = new Vector4(1 / (float)renderResolution.x, 1 / (float)renderResolution.y, (float)renderResolution.x, (float)renderResolution.y);
buffer.SetGlobalVector(_AO_RT_TexelSize_ID, oneOverSize_Size);
//----------------------------------------------------------------------------------
float temporalRotation = m_temporalRotations[m_sampleStep % 6];
float temporalOffset = m_spatialOffsets[(m_sampleStep / 6) % 4];
buffer.SetGlobalFloat(_AO_TemporalDirections_ID, temporalRotation / 360);
buffer.SetGlobalFloat(_AO_TemporalOffsets_ID, temporalOffset);
m_sampleStep++;
//----------------------------------------------------------------------------------
//TODO
//Resize
historyData.UpdateSize(renderResolution.x, renderResolution.y);
}
public override void FrameUpdate(PipelineCamera cam, ref PipelineCommandData data)
{
int2 res = int2(cam.cam.pixelWidth, cam.cam.pixelHeight);
int2 originRes = int2(cam.cam.pixelWidth, cam.cam.pixelHeight);
GetDataEvent evt = new GetDataEvent
{
res = res
};
AOHistoryData historyData = IPerCameraData.GetProperty <AOHistoryData, GetDataEvent>(cam, evt);
UpdateVariable_SSAO(historyData, cam, ref data, res, originRes);
RenderSSAO(historyData, cam, ref data, res, originRes);
}
////////////////////////SSAO Function////////////////////////
private void UpdateVariable_SSAO(AOHistoryData historyData, PipelineCamera cam, ref PipelineCommandData data, int2 renderResolution, int2 originResolution)
{
CommandBuffer buffer = data.buffer;
Vector4 oneOverSize_Size;
//----------------------------------------------------------------------------------
float fovRad = cam.cam.fieldOfView * Mathf.Deg2Rad;
float invHalfTanFov = 1 / Mathf.Tan(fovRad * 0.5f);
Vector2 focalLen = new Vector2(invHalfTanFov * ((float)renderResolution.y / (float)renderResolution.x), invHalfTanFov);
Vector2 invFocalLen = new Vector2(1 / focalLen.x, 1 / focalLen.y);
//----------------------------------------------------------------------------------
float projScale;
projScale = renderResolution.y / (Mathf.Tan(fovRad * 0.5f) * 2) * 0.5f;
//----------------------------------------------------------------------------------
oneOverSize_Size = new Vector4(1 / (float)renderResolution.x, 1 / (float)renderResolution.y, (float)renderResolution.x, (float)renderResolution.y);
//----------------------------------------------------------------------------------
float temporalRotation = m_temporalRotations[m_sampleStep % 6];
float temporalOffset = m_spatialOffsets[(m_sampleStep / 6) % 4];
m_sampleStep++;
NativeArray <AOData> datas = new NativeArray <AOData>(1, Allocator.Temp);
AOData *dataPtr = datas.Ptr();
dataPtr->worldToCamera = cam.cam.worldToCameraMatrix;
dataPtr->cameraToWorld = cam.cam.cameraToWorldMatrix;
dataPtr->inverseVP = proper.inverseVP;
dataPtr->dirSampler = DirSampler;
dataPtr->sliceSampler = SliceSampler;
dataPtr->intensity = Intensity;
dataPtr->radius = Radius;
dataPtr->power = Power;
dataPtr->sharpness = Sharpeness;
dataPtr->temporalScale = TemporalScale;
dataPtr->temporalResponse = TemporalResponse;
dataPtr->uvToView = new Vector4(2 * invFocalLen.x, 2 * invFocalLen.y, -1 * invFocalLen.x, -1 * invFocalLen.y);
dataPtr->halfProjScale = projScale;
dataPtr->texelSize = oneOverSize_Size;
dataPtr->temporalDirection = temporalRotation / 360;
dataPtr->temporalOffset = temporalOffset;
dataBuffer.SetData(datas);
datas.Dispose();
buffer.SetGlobalConstantBuffer(dataBuffer, _AOData, 0, dataBuffer.stride);
//----------------------------------------------------------------------------------
//TODO
//Resize
historyData.UpdateSize(originResolution.x, originResolution.y);
}
