private void OnDisable()
{
ReleaseComputeResources();
if (m_FilmicDepthOfFieldMaterial != null)
{
DestroyImmediate(m_FilmicDepthOfFieldMaterial);
}
if (m_TextureBokehMaterial != null)
{
DestroyImmediate(m_TextureBokehMaterial);
}
if (m_MedianFilterMaterial != null)
{
DestroyImmediate(m_MedianFilterMaterial);
}
m_FilmicDepthOfFieldMaterial = null;
m_TextureBokehMaterial = null;
m_MedianFilterMaterial = null;
m_RTU.ReleaseAllTemporaryRenderTextures();
}
private void OnDisable()
{
if (m_Material != null)
{
DestroyImmediate(m_Material);
}
m_Material = null;
m_RTU.ReleaseAllTemporaryRenderTextures();
}
public void OnRenderImage(RenderTexture source, RenderTexture destination)
{
if (material == null)
{
Graphics.Blit(source, destination);
return;
}
if (m_HasInformationFromPreviousFrame)
{
m_HasInformationFromPreviousFrame = (m_PreviousDepthBuffer != null) &&
(source.width == m_PreviousDepthBuffer.width) &&
(source.height == m_PreviousDepthBuffer.height);
}
bool doTemporalFilterThisFrame = m_HasInformationFromPreviousFrame && settings.advancedSettings.temporalFilterStrength > 0.0;
m_HasInformationFromPreviousFrame = false;
// Not using deferred shading? Just blit source to destination.
if (Camera.current.actualRenderingPath != RenderingPath.DeferredShading)
{
Graphics.Blit(source, destination);
return;
}
var rtW = source.width;
var rtH = source.height;
// RGB: Normals, A: Roughness.
// Has the nice benefit of allowing us to control the filtering mode as well.
RenderTexture bilateralKeyTexture = m_RTU.GetTemporaryRenderTexture(rtW, rtH, 0, RenderTextureFormat.ARGB32);
bilateralKeyTexture.filterMode = FilterMode.Point;
Graphics.Blit(source, bilateralKeyTexture, material, (int)PassIndex.BilateralKeyPack);
material.SetTexture("_NormalAndRoughnessTexture", bilateralKeyTexture);
float sWidth = source.width;
float sHeight = source.height;
Vector2 sourceToTempUV = new Vector2(sWidth / rtW, sHeight / rtH);
int downsampleAmount = (settings.advancedSettings.resolution == SSRResolution.FullResolution) ? 1 : 2;
rtW = rtW / downsampleAmount;
rtH = rtH / downsampleAmount;
material.SetVector("_SourceToTempUV", new Vector4(sourceToTempUV.x, sourceToTempUV.y, 1.0f / sourceToTempUV.x, 1.0f / sourceToTempUV.y));
Matrix4x4 P = GetComponent <Camera>().projectionMatrix;
Vector4 projInfo = new Vector4
((-2.0f / (sWidth * P[0])),
(-2.0f / (sHeight * P[5])),
((1.0f - P[2]) / P[0]),
((1.0f + P[6]) / P[5]));
/** The height in pixels of a 1m object if viewed from 1m away. */
float pixelsPerMeterAtOneMeter = sWidth / (-2.0f * (float)(Math.Tan(GetComponent <Camera>().fieldOfView / 180.0 * Math.PI * 0.5)));
material.SetFloat("_PixelsPerMeterAtOneMeter", pixelsPerMeterAtOneMeter);
float sx = sWidth / 2.0f;
float sy = sHeight / 2.0f;
Matrix4x4 warpToScreenSpaceMatrix = new Matrix4x4();
warpToScreenSpaceMatrix.SetRow(0, new Vector4(sx, 0.0f, 0.0f, sx));
warpToScreenSpaceMatrix.SetRow(1, new Vector4(0.0f, sy, 0.0f, sy));
warpToScreenSpaceMatrix.SetRow(2, new Vector4(0.0f, 0.0f, 1.0f, 0.0f));
warpToScreenSpaceMatrix.SetRow(3, new Vector4(0.0f, 0.0f, 0.0f, 1.0f));
Matrix4x4 projectToPixelMatrix = warpToScreenSpaceMatrix * P;
material.SetVector("_ScreenSize", new Vector2(sWidth, sHeight));
material.SetVector("_ReflectionBufferSize", new Vector2(rtW, rtH));
Vector2 invScreenSize = new Vector2((float)(1.0 / sWidth), (float)(1.0 / sHeight));
Matrix4x4 worldToCameraMatrix = GetComponent <Camera>().worldToCameraMatrix;
Matrix4x4 cameraToWorldMatrix = GetComponent <Camera>().worldToCameraMatrix.inverse;
material.SetVector("_InvScreenSize", invScreenSize);
material.SetVector("_ProjInfo", projInfo); // used for unprojection
material.SetMatrix("_ProjectToPixelMatrix", projectToPixelMatrix);
material.SetMatrix("_WorldToCameraMatrix", worldToCameraMatrix);
material.SetMatrix("_CameraToWorldMatrix", cameraToWorldMatrix);
material.SetInt("_EnableRefine", settings.advancedSettings.reduceBanding ? 1 : 0);
material.SetInt("_AdditiveReflection", settings.basicSettings.additiveReflection ? 1 : 0);
material.SetInt("_ImproveCorners", settings.advancedSettings.improveCorners ? 1 : 0);
material.SetFloat("_ScreenEdgeFading", settings.basicSettings.screenEdgeFading);
material.SetFloat("_MipBias", mipBias);
material.SetInt("_UseOcclusion", useOcclusion ? 1 : 0);
material.SetInt("_BilateralUpsampling", settings.advancedSettings.bilateralUpsample ? 1 : 0);
material.SetInt("_FallbackToSky", fallbackToSky ? 1 : 0);
material.SetInt("_TreatBackfaceHitAsMiss", settings.advancedSettings.treatBackfaceHitAsMiss ? 1 : 0);
material.SetInt("_AllowBackwardsRays", settings.advancedSettings.allowBackwardsRays ? 1 : 0);
material.SetInt("_TraceEverywhere", settings.advancedSettings.traceEverywhere ? 1 : 0);
float z_f = GetComponent <Camera>().farClipPlane;
float z_n = GetComponent <Camera>().nearClipPlane;
Vector3 cameraClipInfo = (float.IsPositiveInfinity(z_f)) ?
new Vector3(z_n, -1.0f, 1.0f) :
new Vector3(z_n * z_f, z_n - z_f, z_f);
material.SetVector("_CameraClipInfo", cameraClipInfo);
material.SetFloat("_MaxRayTraceDistance", settings.basicSettings.maxDistance);
material.SetFloat("_FadeDistance", settings.basicSettings.fadeDistance);
material.SetFloat("_LayerThickness", settings.reflectionSettings.widthModifier);
const int maxMip = 5;
RenderTexture[] reflectionBuffers;
RenderTextureFormat intermediateFormat = settings.basicSettings.enableHDR ? RenderTextureFormat.ARGBHalf : RenderTextureFormat.ARGB32;
reflectionBuffers = new RenderTexture[maxMip];
for (int i = 0; i < maxMip; ++i)
{
if (fullResolutionFiltering)
{
reflectionBuffers[i] = m_RTU.GetTemporaryRenderTexture(rtW, rtH, 0, intermediateFormat);
}
else
{
reflectionBuffers[i] = m_RTU.GetTemporaryRenderTexture(rtW >> i, rtH >> i, 0, intermediateFormat);
}
// We explicitly interpolate during bilateral upsampling.
reflectionBuffers[i].filterMode = settings.advancedSettings.bilateralUpsample ? FilterMode.Point : FilterMode.Bilinear;
}
material.SetInt("_EnableSSR", 1);
material.SetInt("_DebugMode", (int)settings.debugSettings.debugMode);
material.SetInt("_TraceBehindObjects", settings.advancedSettings.traceBehindObjects ? 1 : 0);
material.SetInt("_MaxSteps", settings.reflectionSettings.maxSteps);
RenderTexture rayHitTexture = m_RTU.GetTemporaryRenderTexture(rtW, rtH);
// We have 5 passes for different step sizes
int tracePass = Mathf.Clamp(settings.reflectionSettings.rayStepSize, 0, 4);
Graphics.Blit(source, rayHitTexture, material, tracePass);
material.SetTexture("_HitPointTexture", rayHitTexture);
// Resolve the hitpoints into the mirror reflection buffer
Graphics.Blit(source, reflectionBuffers[0], material, (int)PassIndex.HitPointToReflections);
material.SetTexture("_ReflectionTexture0", reflectionBuffers[0]);
material.SetInt("_FullResolutionFiltering", fullResolutionFiltering ? 1 : 0);
material.SetFloat("_MaxRoughness", 1.0f - settings.reflectionSettings.smoothFallbackThreshold);
material.SetFloat("_RoughnessFalloffRange", settings.reflectionSettings.smoothFallbackDistance);
material.SetFloat("_SSRMultiplier", settings.basicSettings.reflectionMultiplier);
RenderTexture[] edgeTextures = new RenderTexture[maxMip];
if (settings.advancedSettings.bilateralUpsample && useEdgeDetector)
{
edgeTextures[0] = m_RTU.GetTemporaryRenderTexture(rtW, rtH);
Graphics.Blit(source, edgeTextures[0], material, (int)PassIndex.EdgeGeneration);
for (int i = 1; i < maxMip; ++i)
{
edgeTextures[i] = m_RTU.GetTemporaryRenderTexture(rtW >> i, rtH >> i);
material.SetInt("_LastMip", i - 1);
Graphics.Blit(edgeTextures[i - 1], edgeTextures[i], material, (int)PassIndex.MinMipGeneration);
}
}
if (settings.advancedSettings.highQualitySharpReflections)
{
RenderTexture filteredReflections = m_RTU.GetTemporaryRenderTexture(reflectionBuffers[0].width, reflectionBuffers[0].height, 0, reflectionBuffers[0].format);
filteredReflections.filterMode = reflectionBuffers[0].filterMode;
reflectionBuffers[0].filterMode = FilterMode.Bilinear;
Graphics.Blit(reflectionBuffers[0], filteredReflections, material, (int)PassIndex.PoissonBlur);
// Replace the unfiltered buffer with the newly filtered one.
m_RTU.ReleaseTemporaryRenderTexture(reflectionBuffers[0]);
reflectionBuffers[0] = filteredReflections;
material.SetTexture("_ReflectionTexture0", reflectionBuffers[0]);
}
// Generate the blurred low-resolution buffers
for (int i = 1; i < maxMip; ++i)
{
RenderTexture inputTex = reflectionBuffers[i - 1];
RenderTexture hBlur;
if (fullResolutionFiltering)
{
hBlur = m_RTU.GetTemporaryRenderTexture(rtW, rtH, 0, intermediateFormat);
}
else
{
int lowMip = i;
hBlur = m_RTU.GetTemporaryRenderTexture(rtW >> lowMip, rtH >> (i - 1), 0, intermediateFormat);
}
for (int j = 0; j < (fullResolutionFiltering ? (i * i) : 1); ++j)
{
// Currently we blur at the resolution of the previous mip level, we could save bandwidth by blurring directly to the lower resolution.
material.SetVector("_Axis", new Vector4(1.0f, 0.0f, 0.0f, 0.0f));
material.SetFloat("_CurrentMipLevel", i - 1.0f);
Graphics.Blit(inputTex, hBlur, material, (int)PassIndex.Blur);
material.SetVector("_Axis", new Vector4(0.0f, 1.0f, 0.0f, 0.0f));
inputTex = reflectionBuffers[i];
Graphics.Blit(hBlur, inputTex, material, (int)PassIndex.Blur);
}
material.SetTexture("_ReflectionTexture" + i, reflectionBuffers[i]);
m_RTU.ReleaseTemporaryRenderTexture(hBlur);
}
if (settings.advancedSettings.bilateralUpsample && useEdgeDetector)
{
for (int i = 0; i < maxMip; ++i)
{
material.SetTexture("_EdgeTexture" + i, edgeTextures[i]);
}
}
material.SetInt("_UseEdgeDetector", useEdgeDetector ? 1 : 0);
RenderTexture averageRayDistanceBuffer = m_RTU.GetTemporaryRenderTexture(source.width, source.height, 0, RenderTextureFormat.RHalf);
if (computeAverageRayDistance)
{
Graphics.Blit(source, averageRayDistanceBuffer, material, (int)PassIndex.AverageRayDistanceGeneration);
}
material.SetInt("_UseAverageRayDistance", computeAverageRayDistance ? 1 : 0);
material.SetTexture("_AverageRayDistanceBuffer", averageRayDistanceBuffer);
bool resolveDiffersFromTraceRes = (settings.advancedSettings.resolution == SSRResolution.HalfTraceFullResolve);
RenderTexture finalReflectionBuffer = m_RTU.GetTemporaryRenderTexture(resolveDiffersFromTraceRes ? source.width : rtW, resolveDiffersFromTraceRes ? source.height : rtH, 0, intermediateFormat);
material.SetFloat("_FresnelFade", settings.reflectionSettings.fresnelFade);
material.SetFloat("_FresnelFadePower", settings.reflectionSettings.fresnelFadePower);
material.SetFloat("_DistanceBlur", settings.reflectionSettings.distanceBlur);
material.SetInt("_HalfResolution", (settings.advancedSettings.resolution != SSRResolution.FullResolution) ? 1 : 0);
material.SetInt("_HighlightSuppression", settings.advancedSettings.highlightSuppression ? 1 : 0);
Graphics.Blit(reflectionBuffers[0], finalReflectionBuffer, material, (int)PassIndex.CompositeSSR);
material.SetTexture("_FinalReflectionTexture", finalReflectionBuffer);
RenderTexture temporallyFilteredBuffer = m_RTU.GetTemporaryRenderTexture(resolveDiffersFromTraceRes ? source.width : rtW, resolveDiffersFromTraceRes ? source.height : rtH, 0, intermediateFormat);
if (doTemporalFilterThisFrame)
{
material.SetInt("_UseTemporalConfidence", settings.advancedSettings.useTemporalConfidence ? 1 : 0);
material.SetFloat("_TemporalAlpha", settings.advancedSettings.temporalFilterStrength);
material.SetMatrix("_CurrentCameraToPreviousCamera", m_PreviousWorldToCameraMatrix * cameraToWorldMatrix);
material.SetTexture("_PreviousReflectionTexture", m_PreviousReflectionBuffer);
material.SetTexture("_PreviousCSZBuffer", m_PreviousDepthBuffer);
Graphics.Blit(source, temporallyFilteredBuffer, material, (int)PassIndex.TemporalFilter);
material.SetTexture("_FinalReflectionTexture", temporallyFilteredBuffer);
}
if (settings.advancedSettings.temporalFilterStrength > 0.0)
{
m_PreviousWorldToCameraMatrix = worldToCameraMatrix;
PreparePreviousBuffers(source.width, source.height);
Graphics.Blit(source, m_PreviousDepthBuffer, material, (int)PassIndex.BlitDepthAsCSZ);
Graphics.Blit(rayHitTexture, m_PreviousHitBuffer);
Graphics.Blit(doTemporalFilterThisFrame ? temporallyFilteredBuffer : finalReflectionBuffer, m_PreviousReflectionBuffer);
m_HasInformationFromPreviousFrame = true;
}
Graphics.Blit(source, destination, material, (int)PassIndex.CompositeFinal);
m_RTU.ReleaseAllTemporaryRenderTextures();
}