public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
    {
        if (colorTintMat == null)
        {
            UnityEngine.Debug.LogError("Material is null");
            return;
        }
        if (!renderingData.cameraData.postProcessEnabled)
        {
            return;
        }
        //判读后效模块是否开启
        var stack = VolumeManager.instance.stack;

        colorTint = stack.GetComponent <ColorTint>();
        if (colorTint == null)
        {
            return;
        }
        if (!colorTint.IsActive())
        {
            return;
        }

        var cmd = CommandBufferPool.Get(m_ProfilerTag);

        context.ExecuteCommandBuffer(cmd);
        CommandBufferPool.Release(cmd);
    }
        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            EditorGUI.BeginProperty(position, label, property);

            if (untintedStyle == null)
            {
                untintedStyle = new CompiledStyleDefinition(new StyleDefinition()
                {
                    MaxSize = 64
                });

                tintedStyle = new CompiledStyleDefinition(new StyleDefinition()
                {
                    MaxSize = 64
                });
            }

            var sliderRect  = new Rect(position.x, position.y + 12, position.width, EditorGUIUtility.singleLineHeight);
            var previewArea = new Rect(position.x, sliderRect.yMax + 12, position.width, position.yMax - 24 - sliderRect.yMax);

            var untintedRect = new Rect(previewArea.x, previewArea.y, (previewArea.width * 0.5f) - 3.0f, previewArea.height);
            var tintedRect   = new Rect(untintedRect.xMax + 6.0f, previewArea.y, untintedRect.width, previewArea.height);

            var tintStrengthProperty = property.FindPropertyRelative("tintStrength");

            tintStrengthProperty.floatValue = EditorGUI.Slider(sliderRect, label,
                                                               tintStrengthProperty.floatValue, 0.0f, 1.0f);

            if (Event.current.type == EventType.Repaint)
            {
                var tint = new ColorTint(tintStrengthProperty.floatValue * 1.0f);
                tintedStyle.Tint = tint.Apply(Color.white);

                AssetIconDrawer.DrawSprite(untintedRect, AssetIconResources.CurrentTheme.SampleImage, untintedStyle, false);
                AssetIconDrawer.DrawSprite(tintedRect, AssetIconResources.CurrentTheme.SampleImage, tintedStyle, false);
            }

            EditorGUI.EndProperty();
        }