|
|
- using UnityEditorInternal;
- using UnityEngine;
- using UnityEngine.PostProcessing;
-
- namespace UnityEditor.PostProcessing
- {
- using HistogramMode = PostProcessingProfile.MonitorSettings.HistogramMode;
-
- public class HistogramMonitor : PostProcessingMonitor
- {
- static GUIContent s_MonitorTitle = new GUIContent("Histogram");
-
- ComputeShader m_ComputeShader;
- ComputeBuffer m_Buffer;
- Material m_Material;
- RenderTexture m_HistogramTexture;
- Rect m_MonitorAreaRect;
-
- public HistogramMonitor()
- {
- m_ComputeShader = EditorResources.Load<ComputeShader>("Monitors/HistogramCompute.compute");
- }
-
- public override void Dispose()
- {
- GraphicsUtils.Destroy(m_Material);
- GraphicsUtils.Destroy(m_HistogramTexture);
-
- if (m_Buffer != null)
- m_Buffer.Release();
-
- m_Material = null;
- m_HistogramTexture = null;
- m_Buffer = null;
- }
-
- public override bool IsSupported()
- {
- return m_ComputeShader != null && GraphicsUtils.supportsDX11;
- }
-
- public override GUIContent GetMonitorTitle()
- {
- return s_MonitorTitle;
- }
-
- public override void OnMonitorSettings()
- {
- EditorGUI.BeginChangeCheck();
-
- bool refreshOnPlay = m_MonitorSettings.refreshOnPlay;
- var mode = m_MonitorSettings.histogramMode;
-
- refreshOnPlay = GUILayout.Toggle(refreshOnPlay, new GUIContent(FxStyles.playIcon, "Keep refreshing the histogram in play mode; this may impact performances."), FxStyles.preButton);
- mode = (HistogramMode)EditorGUILayout.EnumPopup(mode, FxStyles.preDropdown, GUILayout.MaxWidth(100f));
-
- if (EditorGUI.EndChangeCheck())
- {
- Undo.RecordObject(m_BaseEditor.serializedObject.targetObject, "Histogram Settings Changed");
- m_MonitorSettings.refreshOnPlay = refreshOnPlay;
- m_MonitorSettings.histogramMode = mode;
- InternalEditorUtility.RepaintAllViews();
- }
- }
-
- public override void OnMonitorGUI(Rect r)
- {
- if (Event.current.type == EventType.Repaint)
- {
- // If m_MonitorAreaRect isn't set the preview was just opened so refresh the render to get the histogram data
- if (Mathf.Approximately(m_MonitorAreaRect.width, 0) && Mathf.Approximately(m_MonitorAreaRect.height, 0))
- InternalEditorUtility.RepaintAllViews();
-
- // Sizing
- float width = m_HistogramTexture != null
- ? Mathf.Min(m_HistogramTexture.width, r.width - 65f)
- : r.width;
- float height = m_HistogramTexture != null
- ? Mathf.Min(m_HistogramTexture.height, r.height - 45f)
- : r.height;
-
- m_MonitorAreaRect = new Rect(
- Mathf.Floor(r.x + r.width / 2f - width / 2f),
- Mathf.Floor(r.y + r.height / 2f - height / 2f - 5f),
- width, height
- );
-
- if (m_HistogramTexture != null)
- {
- Graphics.DrawTexture(m_MonitorAreaRect, m_HistogramTexture);
-
- var color = Color.white;
- const float kTickSize = 5f;
-
- // Rect, lines & ticks points
- if (m_MonitorSettings.histogramMode == HistogramMode.RGBSplit)
- {
- // A B C D E
- // N F
- // M G
- // L K J I H
-
- var A = new Vector3(m_MonitorAreaRect.x - 1f, m_MonitorAreaRect.y - 1f);
- var E = new Vector3(A.x + m_MonitorAreaRect.width + 2f, m_MonitorAreaRect.y - 1f);
- var H = new Vector3(E.x, E.y + m_MonitorAreaRect.height + 2f);
- var L = new Vector3(A.x, H.y);
-
- var N = new Vector3(A.x, A.y + (L.y - A.y) / 3f);
- var M = new Vector3(A.x, A.y + (L.y - A.y) * 2f / 3f);
- var F = new Vector3(E.x, E.y + (H.y - E.y) / 3f);
- var G = new Vector3(E.x, E.y + (H.y - E.y) * 2f / 3f);
-
- var C = new Vector3(A.x + (E.x - A.x) / 2f, A.y);
- var J = new Vector3(L.x + (H.x - L.x) / 2f, L.y);
-
- var B = new Vector3(A.x + (C.x - A.x) / 2f, A.y);
- var D = new Vector3(C.x + (E.x - C.x) / 2f, C.y);
- var I = new Vector3(J.x + (H.x - J.x) / 2f, J.y);
- var K = new Vector3(L.x + (J.x - L.x) / 2f, L.y);
-
- // Borders
- Handles.color = color;
- Handles.DrawLine(A, E);
- Handles.DrawLine(E, H);
- Handles.DrawLine(H, L);
- Handles.DrawLine(L, new Vector3(A.x, A.y - 1f));
-
- // Vertical ticks
- Handles.DrawLine(A, new Vector3(A.x - kTickSize, A.y));
- Handles.DrawLine(N, new Vector3(N.x - kTickSize, N.y));
- Handles.DrawLine(M, new Vector3(M.x - kTickSize, M.y));
- Handles.DrawLine(L, new Vector3(L.x - kTickSize, L.y));
-
- Handles.DrawLine(E, new Vector3(E.x + kTickSize, E.y));
- Handles.DrawLine(F, new Vector3(F.x + kTickSize, F.y));
- Handles.DrawLine(G, new Vector3(G.x + kTickSize, G.y));
- Handles.DrawLine(H, new Vector3(H.x + kTickSize, H.y));
-
- // Horizontal ticks
- Handles.DrawLine(A, new Vector3(A.x, A.y - kTickSize));
- Handles.DrawLine(B, new Vector3(B.x, B.y - kTickSize));
- Handles.DrawLine(C, new Vector3(C.x, C.y - kTickSize));
- Handles.DrawLine(D, new Vector3(D.x, D.y - kTickSize));
- Handles.DrawLine(E, new Vector3(E.x, E.y - kTickSize));
-
- Handles.DrawLine(L, new Vector3(L.x, L.y + kTickSize));
- Handles.DrawLine(K, new Vector3(K.x, K.y + kTickSize));
- Handles.DrawLine(J, new Vector3(J.x, J.y + kTickSize));
- Handles.DrawLine(I, new Vector3(I.x, I.y + kTickSize));
- Handles.DrawLine(H, new Vector3(H.x, H.y + kTickSize));
-
- // Separators
- Handles.DrawLine(N, F);
- Handles.DrawLine(M, G);
-
- // Labels
- GUI.color = color;
- GUI.Label(new Rect(L.x - 15f, L.y + kTickSize - 4f, 30f, 30f), "0.0", FxStyles.tickStyleCenter);
- GUI.Label(new Rect(J.x - 15f, J.y + kTickSize - 4f, 30f, 30f), "0.5", FxStyles.tickStyleCenter);
- GUI.Label(new Rect(H.x - 15f, H.y + kTickSize - 4f, 30f, 30f), "1.0", FxStyles.tickStyleCenter);
- }
- else
- {
- // A B C D E
- // P F
- // O G
- // N H
- // M L K J I
-
- var A = new Vector3(m_MonitorAreaRect.x, m_MonitorAreaRect.y);
- var E = new Vector3(A.x + m_MonitorAreaRect.width + 1f, m_MonitorAreaRect.y);
- var I = new Vector3(E.x, E.y + m_MonitorAreaRect.height + 1f);
- var M = new Vector3(A.x, I.y);
-
- var C = new Vector3(A.x + (E.x - A.x) / 2f, A.y);
- var G = new Vector3(E.x, E.y + (I.y - E.y) / 2f);
- var K = new Vector3(M.x + (I.x - M.x) / 2f, M.y);
- var O = new Vector3(A.x, A.y + (M.y - A.y) / 2f);
-
- var P = new Vector3(A.x, A.y + (O.y - A.y) / 2f);
- var F = new Vector3(E.x, E.y + (G.y - E.y) / 2f);
- var N = new Vector3(A.x, O.y + (M.y - O.y) / 2f);
- var H = new Vector3(E.x, G.y + (I.y - G.y) / 2f);
-
- var B = new Vector3(A.x + (C.x - A.x) / 2f, A.y);
- var L = new Vector3(M.x + (K.x - M.x) / 2f, M.y);
- var D = new Vector3(C.x + (E.x - C.x) / 2f, A.y);
- var J = new Vector3(K.x + (I.x - K.x) / 2f, M.y);
-
- // Borders
- Handles.color = color;
- Handles.DrawLine(A, E);
- Handles.DrawLine(E, I);
- Handles.DrawLine(I, M);
- Handles.DrawLine(M, new Vector3(A.x, A.y - 1f));
-
- // Vertical ticks
- Handles.DrawLine(A, new Vector3(A.x - kTickSize, A.y));
- Handles.DrawLine(P, new Vector3(P.x - kTickSize, P.y));
- Handles.DrawLine(O, new Vector3(O.x - kTickSize, O.y));
- Handles.DrawLine(N, new Vector3(N.x - kTickSize, N.y));
- Handles.DrawLine(M, new Vector3(M.x - kTickSize, M.y));
-
- Handles.DrawLine(E, new Vector3(E.x + kTickSize, E.y));
- Handles.DrawLine(F, new Vector3(F.x + kTickSize, F.y));
- Handles.DrawLine(G, new Vector3(G.x + kTickSize, G.y));
- Handles.DrawLine(H, new Vector3(H.x + kTickSize, H.y));
- Handles.DrawLine(I, new Vector3(I.x + kTickSize, I.y));
-
- // Horizontal ticks
- Handles.DrawLine(A, new Vector3(A.x, A.y - kTickSize));
- Handles.DrawLine(B, new Vector3(B.x, B.y - kTickSize));
- Handles.DrawLine(C, new Vector3(C.x, C.y - kTickSize));
- Handles.DrawLine(D, new Vector3(D.x, D.y - kTickSize));
- Handles.DrawLine(E, new Vector3(E.x, E.y - kTickSize));
-
- Handles.DrawLine(M, new Vector3(M.x, M.y + kTickSize));
- Handles.DrawLine(L, new Vector3(L.x, L.y + kTickSize));
- Handles.DrawLine(K, new Vector3(K.x, K.y + kTickSize));
- Handles.DrawLine(J, new Vector3(J.x, J.y + kTickSize));
- Handles.DrawLine(I, new Vector3(I.x, I.y + kTickSize));
-
- // Labels
- GUI.color = color;
- GUI.Label(new Rect(A.x - kTickSize - 34f, A.y - 15f, 30f, 30f), "1.0", FxStyles.tickStyleRight);
- GUI.Label(new Rect(O.x - kTickSize - 34f, O.y - 15f, 30f, 30f), "0.5", FxStyles.tickStyleRight);
- GUI.Label(new Rect(M.x - kTickSize - 34f, M.y - 15f, 30f, 30f), "0.0", FxStyles.tickStyleRight);
-
- GUI.Label(new Rect(E.x + kTickSize + 4f, E.y - 15f, 30f, 30f), "1.0", FxStyles.tickStyleLeft);
- GUI.Label(new Rect(G.x + kTickSize + 4f, G.y - 15f, 30f, 30f), "0.5", FxStyles.tickStyleLeft);
- GUI.Label(new Rect(I.x + kTickSize + 4f, I.y - 15f, 30f, 30f), "0.0", FxStyles.tickStyleLeft);
-
- GUI.Label(new Rect(M.x - 15f, M.y + kTickSize - 4f, 30f, 30f), "0.0", FxStyles.tickStyleCenter);
- GUI.Label(new Rect(K.x - 15f, K.y + kTickSize - 4f, 30f, 30f), "0.5", FxStyles.tickStyleCenter);
- GUI.Label(new Rect(I.x - 15f, I.y + kTickSize - 4f, 30f, 30f), "1.0", FxStyles.tickStyleCenter);
- }
- }
- }
- }
-
- public override void OnFrameData(RenderTexture source)
- {
- if (Application.isPlaying && !m_MonitorSettings.refreshOnPlay)
- return;
-
- if (Mathf.Approximately(m_MonitorAreaRect.width, 0) || Mathf.Approximately(m_MonitorAreaRect.height, 0))
- return;
-
- float ratio = (float)source.width / (float)source.height;
- int h = 512;
- int w = Mathf.FloorToInt(h * ratio);
-
- var rt = RenderTexture.GetTemporary(w, h, 0, source.format);
- Graphics.Blit(source, rt);
- ComputeHistogram(rt);
- m_BaseEditor.Repaint();
- RenderTexture.ReleaseTemporary(rt);
- }
-
- void CreateBuffer(int width, int height)
- {
- m_Buffer = new ComputeBuffer(width * height, sizeof(uint) << 2);
- }
-
- void ComputeHistogram(RenderTexture source)
- {
- if (m_Buffer == null)
- {
- CreateBuffer(256, 1);
- }
- else if (m_Buffer.count != 256)
- {
- m_Buffer.Release();
- CreateBuffer(256, 1);
- }
-
- if (m_Material == null)
- {
- m_Material = new Material(Shader.Find("Hidden/Post FX/Monitors/Histogram Render")) { hideFlags = HideFlags.DontSave };
- }
-
- var channels = Vector4.zero;
- switch (m_MonitorSettings.histogramMode)
- {
- case HistogramMode.Red: channels.x = 1f; break;
- case HistogramMode.Green: channels.y = 1f; break;
- case HistogramMode.Blue: channels.z = 1f; break;
- case HistogramMode.Luminance: channels.w = 1f; break;
- default: channels = new Vector4(1f, 1f, 1f, 0f); break;
- }
-
- var cs = m_ComputeShader;
-
- int kernel = cs.FindKernel("KHistogramClear");
- cs.SetBuffer(kernel, "_Histogram", m_Buffer);
- cs.Dispatch(kernel, 1, 1, 1);
-
- kernel = cs.FindKernel("KHistogramGather");
- cs.SetBuffer(kernel, "_Histogram", m_Buffer);
- cs.SetTexture(kernel, "_Source", source);
- cs.SetInt("_IsLinear", GraphicsUtils.isLinearColorSpace ? 1 : 0);
- cs.SetVector("_Res", new Vector4(source.width, source.height, 0f, 0f));
- cs.SetVector("_Channels", channels);
- cs.Dispatch(kernel, Mathf.CeilToInt(source.width / 16f), Mathf.CeilToInt(source.height / 16f), 1);
-
- kernel = cs.FindKernel("KHistogramScale");
- cs.SetBuffer(kernel, "_Histogram", m_Buffer);
- cs.Dispatch(kernel, 1, 1, 1);
-
- if (m_HistogramTexture == null || m_HistogramTexture.width != source.width || m_HistogramTexture.height != source.height)
- {
- GraphicsUtils.Destroy(m_HistogramTexture);
- m_HistogramTexture = new RenderTexture(source.width, source.height, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear)
- {
- hideFlags = HideFlags.DontSave,
- wrapMode = TextureWrapMode.Clamp,
- filterMode = FilterMode.Bilinear
- };
- }
-
- m_Material.SetBuffer("_Histogram", m_Buffer);
- m_Material.SetVector("_Size", new Vector2(m_HistogramTexture.width, m_HistogramTexture.height));
- m_Material.SetColor("_ColorR", new Color(1f, 0f, 0f, 1f));
- m_Material.SetColor("_ColorG", new Color(0f, 1f, 0f, 1f));
- m_Material.SetColor("_ColorB", new Color(0f, 0f, 1f, 1f));
- m_Material.SetColor("_ColorL", new Color(1f, 1f, 1f, 1f));
- m_Material.SetInt("_Channel", (int)m_MonitorSettings.histogramMode);
-
- int pass = 0;
- if (m_MonitorSettings.histogramMode == HistogramMode.RGBMerged)
- pass = 1;
- else if (m_MonitorSettings.histogramMode == HistogramMode.RGBSplit)
- pass = 2;
-
- Graphics.Blit(null, m_HistogramTexture, m_Material, pass);
- }
- }
- }
|