public void Render(ScreenSpaceAmbientOcclusionSettings.Settings settings, HDRenderPipeline hdRP, HDCamera hdCamera, ScriptableRenderContext renderContext, CommandBuffer cmd, bool isForward)
{
const RenderTextureFormat kTempFormat = RenderTextureFormat.ARGB32;
const RenderTextureReadWrite kRWMode = RenderTextureReadWrite.Linear;
const FilterMode kFilter = FilterMode.Bilinear;
// Note: Currently there is no SSAO in forward as we don't have normal buffer
// If SSAO is disable, simply put a white 1x1 texture
if (settings.enable == false || isForward)
{
cmd.SetGlobalTexture(HDShaderIDs._AmbientOcclusionTexture, UnityEngine.Rendering.PostProcessing.RuntimeUtilities.blackTexture); // Neutral is black, see the comment in the shaders
cmd.SetGlobalFloat(HDShaderIDs._AmbientOcclusionDirectLightStrenght, 0.0f);
return;
}
var width = hdCamera.camera.pixelWidth;
var height = hdCamera.camera.pixelHeight;
var downsize = settings.downsampling ? 2 : 1;
// Provide the settings via uniforms.
m_Material.SetFloat(Uniforms._Intensity, settings.intensity);
m_Material.SetFloat(Uniforms._Radius, settings.radius);
m_Material.SetFloat(Uniforms._Downsample, 1.0f / downsize);
m_Material.SetFloat(Uniforms._SampleCount, settings.sampleCount);
using (new Utilities.ProfilingSample("Screenspace ambient occlusion", cmd))
{
// AO estimation.
cmd.GetTemporaryRT(Uniforms._TempTex1, width / downsize, height / downsize, 0, kFilter, kTempFormat, kRWMode);
Utilities.DrawFullScreen(cmd, m_Material, Uniforms._TempTex1, null, 0);
hdRP.PushFullScreenDebugTexture(cmd, Uniforms._TempTex1, hdCamera.camera, renderContext, FullScreenDebugMode.SSAOBeforeFiltering);
// Denoising (horizontal pass).
cmd.GetTemporaryRT(Uniforms._TempTex2, width, height, 0, kFilter, kTempFormat, kRWMode);
cmd.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex1);
Utilities.DrawFullScreen(cmd, m_Material, Uniforms._TempTex2, null, 1);
cmd.ReleaseTemporaryRT(Uniforms._TempTex1);
// Denoising (vertical pass).
cmd.GetTemporaryRT(Uniforms._TempTex1, width, height, 0, kFilter, kTempFormat, kRWMode);
cmd.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex2);
Utilities.DrawFullScreen(cmd, m_Material, Uniforms._TempTex1, null, 2);
cmd.ReleaseTemporaryRT(Uniforms._TempTex2);
// Final filtering
cmd.GetTemporaryRT(Uniforms._AOBuffer, width, height, 0, kFilter, GetAOBufferFormat(), kRWMode);
cmd.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex1);
Utilities.DrawFullScreen(cmd, m_Material, Uniforms._AOBuffer, null, 3);
cmd.ReleaseTemporaryRT(Uniforms._TempTex1);
// Setup texture for lighting pass (automatic of unity)
cmd.SetGlobalTexture(HDShaderIDs._AmbientOcclusionTexture, Uniforms._AOBuffer);
cmd.SetGlobalFloat(HDShaderIDs._AmbientOcclusionDirectLightStrenght, settings.affectDirectLigthingStrenght);
hdRP.PushFullScreenDebugTexture(cmd, Uniforms._AOBuffer, hdCamera.camera, renderContext, FullScreenDebugMode.SSAO);
}
}
public void Render(ScreenSpaceAmbientOcclusionSettings.Settings settings, HDRenderPipelineAsset hdRP, Camera hdCamera, ScriptableRenderContext renderContext, bool isForward)
{
const RenderTextureFormat kTempFormat = RenderTextureFormat.ARGB32;
const RenderTextureReadWrite kRWMode = RenderTextureReadWrite.Linear;
const FilterMode kFilter = FilterMode.Bilinear;
if (m_Command == null)
{
m_Command = new CommandBuffer {
name = "Ambient Occlusion"
};
}
else
{
m_Command.Clear();
}
// Note: Currently there is no SSAO in forward as we don't have normal buffer
// If SSAO is disable, simply put a white 1x1 texture
if (settings.enable == false || isForward)
{
m_Command.SetGlobalTexture(Uniforms._AOBuffer, PostProcessing.RuntimeUtilities.blackTexture); // Neutral is black, see the comment in the shaders
renderContext.ExecuteCommandBuffer(m_Command);
return;
}
//var width = hdCamera.camera.pixelWidth;
//var height = hdCamera.camera.pixelHeight;
var downsize = settings.downsampling ? 2 : 1;
// Provide the settings via uniforms.
m_Material.SetFloat(Uniforms._Intensity, settings.intensity);
m_Material.SetFloat(Uniforms._Radius, settings.radius);
m_Material.SetFloat(Uniforms._Downsample, 1.0f / downsize);
m_Material.SetFloat(Uniforms._SampleCount, settings.sampleCount);
/*
* // AO estimation.
* m_Command.GetTemporaryRT(Uniforms._TempTex1, width / downsize, height / downsize, 0, kFilter, kTempFormat, kRWMode);
* //Utilities.DrawFullScreen(m_Command, m_Material, hdCamera, Uniforms._TempTex1, null, 0);
* hdRP.PushFullScreenDebugTexture(m_Command, Uniforms._TempTex1, hdCamera.camera, renderContext, FullScreenDebugMode.SSAOBeforeFiltering);
*
* // Denoising (horizontal pass).
* m_Command.GetTemporaryRT(Uniforms._TempTex2, width, height, 0, kFilter, kTempFormat, kRWMode);
* m_Command.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex1);
* //Utilities.DrawFullScreen(m_Command, m_Material, hdCamera, Uniforms._TempTex2, null, 1);
* m_Command.ReleaseTemporaryRT(Uniforms._TempTex1);
*
* // Denoising (vertical pass).
* m_Command.GetTemporaryRT(Uniforms._TempTex1, width, height, 0, kFilter, kTempFormat, kRWMode);
* m_Command.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex2);
* // Utilities.DrawFullScreen(m_Command, m_Material, hdCamera, Uniforms._TempTex1, null, 2);
* m_Command.ReleaseTemporaryRT(Uniforms._TempTex2);
*
* // Final filtering
* m_Command.GetTemporaryRT(Uniforms._AOBuffer, width, height, 0, kFilter, GetAOBufferFormat(), kRWMode);
* m_Command.SetGlobalTexture(Uniforms._MainTex, Uniforms._TempTex1);
* //Utilities.DrawFullScreen(m_Command, m_Material, hdCamera, Uniforms._AOBuffer, null, 3);
* m_Command.ReleaseTemporaryRT(Uniforms._TempTex1);
*
* // Setup texture for lighting pass (automagic of unity)
* m_Command.SetGlobalTexture("_AmbientOcclusionTexture", Uniforms._AOBuffer);
* hdRP.PushFullScreenDebugTexture(m_Command, Uniforms._AOBuffer, hdCamera.camera, renderContext, FullScreenDebugMode.SSAO);
*/
// Register the command buffer and release it.
renderContext.ExecuteCommandBuffer(m_Command);
}