public void Editor_DrawLivePreview(GStylizedTerrain terrain, GTexturePainterArgs args, Camera cam) { #if UNITY_EDITOR Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length]; for (int i = 0; i < uvCorners.Length; ++i) { uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]); } Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners); if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1))) { return; } Texture2D bg = terrain.TerrainData.Mask.MaskMap; int maskResolution = terrain.TerrainData.Mask.MaskMapResolution; RenderTexture rt = GTerrainTexturePainter.Internal_GetRenderTexture(terrain, maskResolution); GCommon.CopyToRT(bg, rt); Material mat = GInternalMaterials.MaskPainterMaterial; mat.SetTexture("_MainTex", bg); SetupTextureGrid(terrain, mat); mat.SetTexture("_Mask", args.BrushMask); mat.SetFloat("_Opacity", args.Opacity); GMaskPainterParams param = GTexturePainterCustomParams.Instance.Mask; Vector4 channel; if (param.Channel == GTextureChannel.R) { channel = new Vector4(1, 0, 0, 0); } else if (param.Channel == GTextureChannel.G) { channel = new Vector4(0, 1, 0, 0); } else if (param.Channel == GTextureChannel.B) { channel = new Vector4(0, 0, 1, 0); } else { channel = new Vector4(0, 0, 0, 1); } mat.SetVector("_Channel", channel); int pass = args.ActionType == GPainterActionType.Normal ? 0 : args.ActionType == GPainterActionType.Negative ? 1 : args.ActionType == GPainterActionType.Alternative ? 2 : 0; GCommon.DrawQuad(rt, uvCorners, mat, pass); GLivePreviewDrawer.DrawMask4ChannelsLivePreview( terrain, cam, rt, GCommon.UnitRect); #endif }
private void DrawMask(Camera cam) { GCommon.ForEachTerrain(painter.GroupId, (t) => { if (t.TerrainData == null) { return; } if (painter.ActivePainter is GMaskPainter) { GLivePreviewDrawer.DrawMask4ChannelsLivePreview(t, cam, t.TerrainData.Mask.MaskMap, GCommon.UnitRect); } else { GLivePreviewDrawer.DrawTerrainMask(t, cam); } }); }