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#if UNITY_EDITOR
using System.IO;
using UnityEditor;
using UnityEngine.Rendering;
#endif
namespace UnityEngine.Experimental.Rendering.HDPipeline
{
public class HDUtils
{
#if UNITY_EDITOR
public static string GetHDRenderPipelinePath()
{
// User can create their own directory for SRP, so we need to find the current path that they use.
// We know that DefaultHDMaterial exist and we know where it is, let's use that to find the current directory.
var guid = AssetDatabase.FindAssets("DefaultHDMaterial t:material");
string path = AssetDatabase.GUIDToAssetPath(guid[0]);
path = Path.GetDirectoryName(path); // Asset is in HDRenderPipeline/RenderPipelineResources/DefaultHDMaterial.mat
path = path.Replace("RenderPipelineResources", ""); // Keep only path with HDRenderPipeline
return path;
}
public static string GetPostProcessingPath()
{
var hdrpPath = GetHDRenderPipelinePath();
var fullPath = Path.GetFullPath(hdrpPath + "../../PostProcessing/PostProcessing");
var relativePath = fullPath.Substring(fullPath.IndexOf("Assets"));
return relativePath.Replace("\\", "/") + "/";
}
#endif
public const RendererConfiguration k_RendererConfigurationBakedLighting = RendererConfiguration.PerObjectLightProbe | RendererConfiguration.PerObjectLightmaps | RendererConfiguration.PerObjectLightProbeProxyVolume;
public static Matrix4x4 GetViewProjectionMatrix(Matrix4x4 worldToViewMatrix, Matrix4x4 projectionMatrix)
{
// The actual projection matrix used in shaders is actually massaged a bit to work across all platforms
// (different Z value ranges etc.)
var gpuProj = GL.GetGPUProjectionMatrix(projectionMatrix, false);
var gpuVP = gpuProj * worldToViewMatrix * Matrix4x4.Scale(new Vector3(1.0f, 1.0f, -1.0f)); // Need to scale -1.0 on Z to match what is being done in the camera.wolrdToCameraMatrix API.
return gpuVP;
}
// Helper to help to display debug info on screen
static float s_OverlayLineHeight = -1.0f;
public static void NextOverlayCoord(ref float x, ref float y, float overlayWidth, float overlayHeight, float width)
{
x += overlayWidth;
s_OverlayLineHeight = Mathf.Max(overlayHeight, s_OverlayLineHeight);
// Go to next line if it goes outside the screen.
if (x + overlayWidth > width)
{
x = 0;
y -= s_OverlayLineHeight;
s_OverlayLineHeight = -1.0f;
}
}
public static void SampleCopyChannel_xyzw2x(CommandBuffer cmd, RenderTargetIdentifier source, RenderTargetIdentifier target, Vector2 size, RenderPipelineResources resources)
{
var s = new Vector4(size.x, size.y, 1f / size.x, 1f / size.y);
cmd.SetComputeVectorParam(resources.copyChannelCS, HDShaderIDs._Size, s);
cmd.SetComputeTextureParam(resources.copyChannelCS, resources.copyChannelKernel_xyzw2x, HDShaderIDs._Source4, source);
cmd.SetComputeTextureParam(resources.copyChannelCS, resources.copyChannelKernel_xyzw2x, HDShaderIDs._Result1, target);
cmd.DispatchCompute(resources.copyChannelCS, resources.copyChannelKernel_xyzw2x, (int)(size.x) / 8, (int)(size.y) / 8, 1);
}
}
}