public override void Render(CommandBuffer cmd, HDCamera camera, RTHandle source, RTHandle destination)
{
Debug.Assert(m_Material != null);
AdditionalCompositorData layerData = null;
camera.camera.gameObject.TryGetComponent <AdditionalCompositorData>(out layerData);
if (layerData == null || layerData.layerFilters == null)
{
HDUtils.BlitCameraTexture(cmd, source, destination);
return;
}
int index = layerData.layerFilters.FindIndex(x => x.filterType == CompositionFilter.FilterType.ALPHA_MASK);
if (index < 0)
{
HDUtils.BlitCameraTexture(cmd, source, destination);
return;
}
var filter = layerData.layerFilters[index];
m_Material.SetTexture(ShaderIDs.k_InputTexture, source);
m_Material.SetTexture(ShaderIDs.k_AlphaTexture, filter.alphaMask);
HDUtils.DrawFullScreen(cmd, m_Material, destination);
}
public override void Render(CommandBuffer cmd, HDCamera camera, RTHandle source, RTHandle destination)
{
Debug.Assert(m_Material != null);
AdditionalCompositorData layerData = null;
camera.camera.gameObject.TryGetComponent <AdditionalCompositorData>(out layerData);
if (activate.value == false || layerData == null || layerData.layerFilters == null)
{
HDUtils.BlitCameraTexture(cmd, source, destination);
return;
}
int index = layerData.layerFilters.FindIndex(x => x.filterType == CompositionFilter.FilterType.CHROMA_KEYING);
if (index < 0)
{
HDUtils.BlitCameraTexture(cmd, source, destination);
return;
}
var filter = layerData.layerFilters[index];
Vector4 keyParams;
keyParams.x = filter.keyThreshold;
keyParams.y = filter.keyTolerance;
keyParams.z = filter.spillRemoval;
keyParams.w = 1.0f;
m_Material.SetVector(ShaderIDs.k_KeyColor, filter.maskColor);
m_Material.SetVector(ShaderIDs.k_KeyParams, keyParams);
m_Material.SetTexture(ShaderIDs.k_InputTexture, source);
HDUtils.DrawFullScreen(cmd, m_Material, destination);
}
protected override void Execute(CustomPassContext ctx)
{
// Executed every frame for all the camera inside the pass volume
AdditionalCompositorData layerData = null;
ctx.hdCamera.camera.gameObject.TryGetComponent <AdditionalCompositorData>(out layerData);
if (layerData == null || layerData.clearColorTexture == null)
{
return;
}
else
{
float cameraAspectRatio = (float)ctx.hdCamera.actualWidth / ctx.hdCamera.actualHeight;
float imageAspectRatio = (float)layerData.clearColorTexture.width / layerData.clearColorTexture.height;
var scaleBiasRt = new Vector4(1.0f, 1.0f, 0.0f, 0.0f);
if (layerData.imageFitMode == BackgroundFitMode.FitHorizontally)
{
scaleBiasRt.y = cameraAspectRatio / imageAspectRatio;
scaleBiasRt.w = (1 - scaleBiasRt.y) / 2.0f;
}
else if (layerData.imageFitMode == BackgroundFitMode.FitVertically)
{
scaleBiasRt.x = imageAspectRatio / cameraAspectRatio;
scaleBiasRt.z = (1 - scaleBiasRt.x) / 2.0f;
}
//else stretch (nothing to do)
// The texture might not cover the entire screen (letter boxing), so in this case clear first to the background color (and stencil)
if (scaleBiasRt.x < 1.0f || scaleBiasRt.y < 1.0f)
{
m_FullscreenPassMaterial.SetVector(ShaderIDs.k_BlitScaleBiasRt, new Vector4(1.0f, 1.0f, 0.0f, 0.0f));
m_FullscreenPassMaterial.SetVector(ShaderIDs.k_BlitScaleBias, new Vector4(1.0f, 1.0f, 0.0f, 0.0f));
ctx.cmd.DrawProcedural(Matrix4x4.identity, m_FullscreenPassMaterial, (int)PassType.ClearColorAndStencil, MeshTopology.Quads, 4, 1);
}
m_FullscreenPassMaterial.SetTexture(ShaderIDs.k_BlitTexture, layerData.clearColorTexture);
m_FullscreenPassMaterial.SetVector(ShaderIDs.k_BlitScaleBiasRt, scaleBiasRt);
m_FullscreenPassMaterial.SetVector(ShaderIDs.k_BlitScaleBias, new Vector4(1.0f, 1.0f, 0.0f, 0.0f));
m_FullscreenPassMaterial.SetInt(ShaderIDs.k_ClearAlpha, layerData.clearAlpha ? 1 : 0);
// draw a quad (not Triangle), to support letter boxing and stretching
ctx.cmd.DrawProcedural(Matrix4x4.identity, m_FullscreenPassMaterial, (int)PassType.DrawTextureAndClearStencil, MeshTopology.Quads, 4, 1);
}
}
