public PaintContext AcquireNormalmap(bool writable, Terrain terrain, Rect boundsInTerrainSpace, int extraBorderPixels = 0)
{
m_NormalmapContext = TerrainPaintUtility.CollectNormals(terrain, boundsInTerrainSpace, extraBorderPixels);
if (m_NormalmapContext == null)
{
return(null);
}
m_NormalmapContext.sourceRenderTexture.name = $"{m_Name}::NormalContext::SourceRT";
m_NormalmapContext.destinationRenderTexture.name = $"{m_Name}::NormalContext::DestRT";
return(m_NormalmapContext);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
MaterialManager mgr = terrain.GetComponent <MaterialManager>();
if (mgr != null)
{
// IndexMap indexMap = mgr.GetIndexMap();
// RenderTexture rt= indexMap.GetTempRenderTexture(true);
paintInProgress = true;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext indexCtx = PaintContext.CreateFromBounds(terrain, brushXform.GetBrushXYBounds(), 64, 64, 1);
indexCtx.CreateRenderTargets(RenderTextureFormat.ARGB32);
PaintContext normalCtx = TerrainPaintUtility.CollectNormals(terrain, brushXform.GetBrushXYBounds(), 2);
Material blitMaterial = TerrainPaintUtility.GetBlitMaterial();
indexCtx.Gather(
TerrainToIndexMapTexture,
new Color(0.0f, 0.0f, 0.0f, 0.0f),
blitMaterial, 0,
null, // before
null); // after
// render source -> dest here
// RenderTexture.active = ctx.oldRenderTexture;
Material paintMaterial = GetPaintMaterial();
float brushStrength = Event.current.shift ? -editContext.brushStrength : editContext.brushStrength;
Vector4 brushParams = new Vector4(
brushStrength,
0.0f,
0.0f, 0.0f);
paintMaterial.SetTexture("_BrushTex", editContext.brushTexture);
paintMaterial.SetVector("_BrushParams", brushParams);
paintMaterial.SetFloat("materialIndex", materialIndex);
paintMaterial.SetTexture("_NormalMap", normalCtx.sourceRenderTexture);
Vector4 indexToNormalXform;
TerrainPaintUtility.BuildTransformPaintContextUVToPaintContextUV(
indexCtx,
normalCtx,
out indexToNormalXform);
paintMaterial.SetVector("_indexToNormalXform", indexToNormalXform);
Vector4 xformParams = new Vector4();
xformParams.x = (randomRotation ? minRotation : fixedRotation) / 360.0f;
xformParams.y = (randomRotation ? maxRotation : fixedRotation) / 360.0f;
paintMaterial.SetVector("_xformParams", xformParams);
Vector4 randoms = new Vector4(
UnityEngine.Random.Range(0.0f, 1.0f),
UnityEngine.Random.Range(0.0f, 1.0f),
UnityEngine.Random.Range(0.0f, 1.0f),
UnityEngine.Random.Range(0.0f, 1.0f));
paintMaterial.SetVector("_randoms", randoms);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(indexCtx, brushXform, paintMaterial);
Graphics.Blit(indexCtx.sourceRenderTexture, indexCtx.destinationRenderTexture, paintMaterial, 0);
// ctx.ScatterToTexture() // we should do this ... less temp render textures
// and users don't have to store render textures at all...
indexCtx.Scatter(
TerrainToIndexMapRenderTexture,
blitMaterial, 0,
null,
null);
normalCtx.Cleanup();
indexCtx.Cleanup();
}
/*
* BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
* PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), m_SelectedTerrainLayer);
* if (paintContext == null)
* return false;
*
* Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
*
* // apply brush
* float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
* Vector4 brushParams = new Vector4(editContext.brushStrength, targetAlpha, 0.0f, 0.0f);
* mat.SetTexture("_BrushTex", editContext.brushTexture);
* mat.SetVector("_BrushParams", brushParams);
*
* TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
*
* Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintTexture);
*
* TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
*/
return(true);
}
public PaintContext AcquireNormalmap(bool writable, Terrain terrain, Rect boundsInTerrainSpace, int extraBorderPixels = 0)
{
m_NormalmapContext = TerrainPaintUtility.CollectNormals(terrain, boundsInTerrainSpace, extraBorderPixels);
return(m_NormalmapContext);
}
public static PaintContext CollectNormals(Terrain terrain)
{
return(TerrainPaintUtility.CollectNormals(terrain, GetTerrainBounds(terrain)));
}
private bool DoPaint(Terrain terrain, float brushStrength, Texture brushTexture, Rect rect, BrushTransform brushXform)
{
if (disablePaint)
{
return(false);
}
m_SelectedTerrainLayer = terrain.terrainData.terrainLayers[m_textureIndex];
PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, m_SelectedTerrainLayer);
if (paintContext == null)
{
return(false);
}
PaintContext heightContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, rect, 1);
if (heightContext == null)
{
return(false);
}
if (terrain.normalmapTexture == null)
{
Debug.Log("Please check the Draw Instanced option under terrain settings to use this tool");
return(false);
}
PaintContext normalContext = TerrainPaintUtility.CollectNormals(terrain, rect, 0);
Material mat = GetPaintMaterial();
float extent = textureParams[m_textureIndex].heightExtent;
float blend = textureParams[m_textureIndex].heightBlend;
float height = textureParams[m_textureIndex].heightMaxPoint;
if (textureParams[m_textureIndex].heightRelative)
{
extent /= relativeHeightMult;
height /= relativeHeightMult;
}
else
{
extent /= terrain.terrainData.size.y;
height /= terrain.terrainData.size.y;
}
Vector4 brushParams = new Vector4(brushStrength, height,
textureParams[m_textureIndex].heightMask ? extent * (1.0f - blend) : 10000.0f, extent * blend);
extent = textureParams[m_textureIndex].slopeExtent;
blend = textureParams[m_textureIndex].slopeBlend;
Vector4 slopeParams = new Vector4(textureParams[m_textureIndex].slopeMaxPoint,
textureParams[m_textureIndex].slopeMask ? extent * (1.0f - blend) : 1.0f, extent * blend, textureParams[m_textureIndex].maxValue);
PaintContext maskContext = null;
if (textureParams[m_textureIndex].textureMask || textureParams[m_textureIndex].textureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[textureParams[m_textureIndex].textureMask ? textureParams[m_textureIndex].maskIndex : textureParams[m_textureIndex].stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", textureParams[m_textureIndex].textureMask ? 1 : (textureParams[m_textureIndex].textureStencil ? 2 : 0));
mat.SetTexture("_BrushTex", brushTexture);
mat.SetTexture("_HeightTex", heightContext.sourceRenderTexture);
mat.SetTexture("_NormalTex", normalContext.sourceRenderTexture);
mat.SetVector("_BrushParams", brushParams);
mat.SetVector("_SlopeParams", slopeParams);
mat.SetFloat("_FeatureSize", textureParams[m_textureIndex].heightRelative?textureParams[m_textureIndex].heightFeatureSize:0.0f);
if (brushTexture == null)
{
mat.SetFloat("_AspectRatio", terrain.terrainData.size.x / terrain.terrainData.size.z);
}
else
{
mat.SetFloat("_AspectRatio", (float)paintContext.sourceRenderTexture.height / (float)paintContext.sourceRenderTexture.width);
}
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Masked Texture");
TerrainPaintUtility.ReleaseContextResources(heightContext);
TerrainPaintUtility.ReleaseContextResources(normalContext);
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
return(true);
}