private void PaintAlphamap(Rect writeBrushRect, Terrain terrain, Material mat)
{
// paint each layer from the sample to the clone location (adds layer if not present already)
for (int i = 0; i < m_Sample.m_Terrain.terrainData.terrainLayers.Length; ++i)
{
TerrainPaintUtility.PaintContext write = TerrainPaintUtility.BeginPaintTexture(terrain,
writeBrushRect,
m_Sample.m_Terrain.terrainData.terrainLayers[i]);
if (write == null)
{
continue;
}
// read created manually to force read to not add the layer if it wasnt already on the terrain, and to use write's rect with offset
TerrainPaintUtility.PaintContext read = new TerrainPaintUtility.PaintContext();
read.brushRect = new RectInt(write.brushRect.position + m_CloneRectPixelOffsetFromStampRect, write.brushRect.size);
// TODO(wyatt): Uncomment this once Andrew's API changes make it to trunk
read.CreateTerrainTiles(m_Sample.m_Terrain,
m_Sample.m_Terrain.terrainData.alphamapWidth,
m_Sample.m_Terrain.terrainData.alphamapHeight);
read.CreateRenderTargets(RenderTextureFormat.R8);
read.GatherAlphamap(m_Sample.m_Terrain, m_Sample.m_Terrain.terrainData.terrainLayers[i], false);
// render mix of clone and stamp areas
StampRender(read, write, mat, (int)ShaderPasses.CloneAlphamap);
TerrainPaintUtility.ReleaseContextResources(read);
TerrainPaintUtility.EndPaintTexture(write, "Terrain Paint - Clone Stamp Tool (Alphamap layer " + i + ")");
}
}
private bool PaintTexture(Terrain terrain, IOnPaint editContext, Vector2 currUV)
{
// the brush size is relative to the main brush size
float brushSize = editContext.brushSize * paintBrushSize / 100f;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, currUV, brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), m_SelectedInnerTerrainLayer);
if (paintContext == null)
{
return(false);
}
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
float brushStrength = paintBrushStrength / 100f; // editContext.brushStrength
// apply brush
Vector4 brushParams = new Vector4(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);
}
/// <summary>
/// Executes the modifiers in order and generates the necessary splatmaps
/// </summary>
/// <param name="layer"></param>
/// <param name="modifiers"></param>
/// <param name="output"></param>
public static void Execute(Terrain terrain, TerrainLayer layer, List <Modifier> modifiers)
{
Graphics.ClearRandomWriteTargets();
Graphics.SetRenderTarget(alphaMap);
//Start with a full white base
Graphics.Blit(Texture2D.whiteTexture, alphaMap);
//Reverse order
for (int i = modifiers.Count - 1; i >= 0; i--)
{
modifiers[i].Configure(filterMat);
modifiers[i].Execute(alphaMap);
}
//Scale splatmap to fit in terrain
Vector2 scaledSplatmapSize = new Vector2((terrain.terrainData.size.x / m_resolution) * m_resolution, (terrain.terrainData.size.z / m_resolution) * m_resolution);
//PaintContext handles creation of splatmaps. Subtracting the weights of a splatmap, from the ones before it.
//A single pixels of all combined alpha maps must not exceed a value of one. The 2nd pass of Hidden/TerrainEngine/TerrainLayerUtils is used internally to do this
//Note: Paintcontext must use a serialized terrain reference, otherwise breaks when executing "ApplyDelayedActions" when the project is saved!
PaintContext c = TerrainPaintUtility.BeginPaintTexture(terrain, new Rect(0, 0, scaledSplatmapSize.x, scaledSplatmapSize.y), layer);
Graphics.Blit(alphaMap, c.destinationRenderTexture);
TerrainPaintUtility.EndPaintTexture(c, "Painted terrain");
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (splatPaintRules == null)
{
return(false);
}
Material mat = GetPaintMaterial();
mat.SetTexture("_BrushTex", editContext.brushTexture);
// gathering heightmap
BrushTransform brushXformForGatheringHeightmap = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContextForGatheringHeightmap = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXformForGatheringHeightmap.GetBrushXYBounds(), 1);
if (paintContextForGatheringHeightmap == null)
{
return(false);
}
RenderTexture gatheredHeightmap = RenderTexture.GetTemporary(terrain.terrainData.heightmapTexture.descriptor);
Graphics.Blit(paintContextForGatheringHeightmap.sourceRenderTexture, gatheredHeightmap); //, TerrainPaintUtility.GetBlitMaterial(), 0);
TerrainPaintUtility.ReleaseContextResources(paintContextForGatheringHeightmap);
// painting alphamap
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);
}
float targetAlpha = 1.0f; // always 1.0 now -- no subtractive painting (we assume this in the ScatterAlphaMap)
Vector4 brushParams = new Vector4(editContext.brushStrength, targetAlpha, splatPaintRules.useHeightTransition ? 1f : 0f, splatPaintRules.useAngleTransition ? 1f : 0f);
Vector4 paintRulesParametersHeight = new Vector4(splatPaintRules.minHeightStart, splatPaintRules.minHeightEnd, splatPaintRules.maxHeightStart, splatPaintRules.maxHeightEnd);
Vector4 paintRulesParametersAngle = new Vector4(splatPaintRules.minAngleStart, splatPaintRules.minAngleEnd, splatPaintRules.maxAngleStart, splatPaintRules.maxAngleEnd);
Vector4 paintRulesInversionAndUsage = new Vector4(splatPaintRules.inverseHeightRule ? 1f : 0f, splatPaintRules.inverseAngleRule ? 1f : 0f, splatPaintRules.applyHeightRule ? 1f : 0f, splatPaintRules.applyAngleRule ? 1f : 0f);
mat.SetVector("_BrushParams", brushParams);
mat.SetVector("_TerrainSize", (Vector4)terrain.terrainData.size);
mat.SetVector("_PaintRulesParametersHeight", paintRulesParametersHeight);
mat.SetVector("_PaintRulesParametersAngle", paintRulesParametersAngle);
mat.SetVector("_PaintRulesInversionAndUsage", paintRulesInversionAndUsage);
mat.SetTexture("_Heightmap", gatheredHeightmap);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
RenderTexture.ReleaseTemporary(gatheredHeightmap);
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
Rect rect = brushXform.GetBrushXYBounds();
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, rect);
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
ApplyBrushInternal(paintContext, editContext.brushStrength, editContext.brushTexture, brushXform, mat);
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Masked Terrace Erosion");
return(false);
}
/// <summary>
/// Executes the modifiers in order and generates the necessary splatmaps
/// </summary>
/// <param name="layer"></param>
/// <param name="modifiers"></param>
/// <param name="output"></param>
public static void ProcessSingleLayer(Terrain terrain, LayerSettings settings)
{
//Disable or with no settings (result in a fill with black)
if (settings.enabled == false)
{
return;
}
Graphics.SetRenderTarget(alphaMap);
//Start with a full white base
Graphics.Blit(Texture2D.whiteTexture, alphaMap);
//Reverse order
for (int i = settings.modifierStack.Count - 1; i >= 0; i--)
{
settings.modifierStack[i].Configure(filterMat);
settings.modifierStack[i].Execute(alphaMap);
}
//Scale splatmap to fit in terrain
Vector2 scaledSplatmapSize = new Vector2((terrain.terrainData.size.x / m_resolution) * m_resolution, (terrain.terrainData.size.z / m_resolution) * m_resolution);
//PaintContext handles creation of splatmaps. Subtracting the weights of a splatmap, from the ones before it.
//A single pixels of all combined alpha maps must not exceed a value of one. The 2nd pass of Hidden/TerrainEngine/TerrainLayerUtils is used internally to do this
//Note: Paintcontext must use a serialized terrain reference, otherwise breaks when executing "ApplyDelayedActions" when the project is saved!
PaintContext c = TerrainPaintUtility.BeginPaintTexture(terrain, new Rect(0, 0, scaledSplatmapSize.x, scaledSplatmapSize.y), settings.layer);
Graphics.Blit(alphaMap, c.destinationRenderTexture);
TerrainPaintUtility.EndPaintTexture(c, UndoActionName);
}
private void PaintAlphamap(Terrain sampleTerrain, Terrain targetTerrain, BrushTransform sampleXform, BrushTransform targetXform, Material mat)
{
Rect sampleRect = sampleXform.GetBrushXYBounds();
Rect targetRect = targetXform.GetBrushXYBounds();
int numSampleTerrainLayers = sampleTerrain.terrainData.terrainLayers.Length;
for (int i = 0; i < numSampleTerrainLayers; ++i)
{
TerrainLayer layer = sampleTerrain.terrainData.terrainLayers[i];
if (layer == null)
{
continue; // nothing to paint if the layer is NULL
}
PaintContext sampleContext = TerrainPaintUtility.BeginPaintTexture(sampleTerrain, sampleRect, layer);
// manually create target context since we are possibly applying another terrain's layers and not its own
int layerIndex = TerrainPaintUtility.FindTerrainLayerIndex(sampleTerrain, layer);
Texture2D layerTexture = TerrainPaintUtility.GetTerrainAlphaMapChecked(sampleTerrain, layerIndex >> 2);
PaintContext targetContext = PaintContext.CreateFromBounds(targetTerrain, targetRect, layerTexture.width, layerTexture.height);
targetContext.CreateRenderTargets(RenderTextureFormat.R8);
targetContext.GatherAlphamap(layer, true);
sampleContext.sourceRenderTexture.filterMode = FilterMode.Point;
mat.SetTexture("_CloneTex", sampleContext.sourceRenderTexture);
Graphics.Blit(targetContext.sourceRenderTexture, targetContext.destinationRenderTexture, mat, (int)ShaderPasses.CloneAlphamap);
// apply texture modifications and perform cleanup. same thing as calling TerrainPaintUtility.EndPaintTexture
targetContext.ScatterAlphamap("Terrain Paint - Clone Brush (Texture)");
targetContext.Cleanup();
}
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
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 AcquireTexture(bool writable, Terrain terrain, Rect boundsInTerrainSpace, TerrainLayer layer, int extraBorderPixels = 0)
{
m_WriteToTexture = writable;
m_TextureContext = TerrainPaintUtility.BeginPaintTexture(terrain, boundsInTerrainSpace, layer, extraBorderPixels);
if (m_TextureContext == null)
{
return(null);
}
m_TextureContext.sourceRenderTexture.name = $"{m_Name}::TextureContext::SourceRT";
m_TextureContext.destinationRenderTexture.name = $"{m_Name}::TextureContext::DestRT";
return(m_TextureContext);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (Event.current.type == EventType.MouseDown)
{
m_PrevBrushPos = editContext.uv;
return(false);
}
if (Event.current.type == EventType.MouseDrag && m_PreviousEvent == EventType.MouseDrag)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
Vector2 smudgeDir = editContext.uv - m_PrevBrushPos;
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
Vector4 brushParams = new Vector4(editContext.brushStrength, smudgeDir.x, smudgeDir.y, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Masked Smudge");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
m_PrevBrushPos = editContext.uv;
}
m_PreviousEvent = Event.current.type;
return(false);
}
private bool DoPaint(Terrain terrain, float brushStrength, Texture brushTexture, BrushTransform brushXform)
{
Rect rect = brushXform.GetBrushXYBounds();
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
if (paintContext == null)
{
return(false);
}
paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
Vector4 brushParams = new Vector4(brushStrength, 0.0f, m_FeatureSize, 0);
mat.SetTexture("_BrushTex", brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Masked Smooth Sharpen");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
return(true);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, 0.0f);
Rect rect = brushXform.GetBrushXYBounds();
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, rect, 1);
Material mat = GetPaintMaterial();
PaintContext maskContext = null;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
mat.SetTexture("_MaskTex", maskContext.sourceRenderTexture);
}
mat.SetInt("_MaskStencil", m_TextureMask ? 1 : (m_TextureStencil ? 2 : 0));
// apply brush
Vector4 brushParams = new Vector4(
editContext.brushStrength,
m_ErosionStrength,
m_MixStrength,
0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Masked Ridge Erode");
if (maskContext != null)
{
TerrainPaintUtility.ReleaseContextResources(maskContext);
}
return(false);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
Rect brushRect = TerrainPaintUtility.CalculateBrushRectInTerrainUnits(terrain, editContext.uv, editContext.brushSize);
TerrainPaintUtility.PaintContext paintContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushRect, m_SelectedTerrainLayer);
if (paintContext == null)
{
return(false);
}
Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
// apply brush
Vector4 brushParams = new Vector4(editContext.brushStrength, m_SplatAlpha, 0.0f, 0.0f);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintTexture);
TerrainPaintUtility.EndPaintTexture(paintContext, "Terrain Paint - Texture");
return(true);
}
private void PaintAlphamap(Terrain sampleTerrain, Terrain targetTerrain, BrushTransform sampleXform, BrushTransform targetXform, Material mat)
{
Rect sampleRect = sampleXform.GetBrushXYBounds();
Rect targetRect = targetXform.GetBrushXYBounds();
int numSampleTerrainLayers = sampleTerrain.terrainData.terrainLayers.Length;
for (int i = 0; i < numSampleTerrainLayers; ++i)
{
TerrainLayer layer = sampleTerrain.terrainData.terrainLayers[i];
if (layer == null)
{
continue; // nothing to paint if the layer is NULL
}
PaintContext sampleContext = TerrainPaintUtility.BeginPaintTexture(sampleTerrain, sampleRect, layer);
int layerIndex = TerrainPaintUtility.FindTerrainLayerIndex(sampleTerrain, layer);
Texture2D layerTexture = TerrainPaintUtility.GetTerrainAlphaMapChecked(sampleTerrain, layerIndex >> 2);
PaintContext targetContext = PaintContext.CreateFromBounds(targetTerrain, targetRect, layerTexture.width, layerTexture.height);
targetContext.CreateRenderTargets(RenderTextureFormat.R8);
targetContext.GatherAlphamap(layer, true);
sampleContext.sourceRenderTexture.filterMode = FilterMode.Point;
mat.SetTexture("_CloneTex", sampleContext.sourceRenderTexture);
mat.SetVector("_SampleUVScaleOffset", ComputeSampleUVScaleOffset(sampleContext, targetContext));
var brushMask = RTUtils.GetTempHandle(targetContext.sourceRenderTexture.width, targetContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, targetContext.sourceRenderTexture, brushMask, mat);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(targetContext, targetXform, mat);
Graphics.Blit(targetContext.sourceRenderTexture, targetContext.destinationRenderTexture, mat, (int)ShaderPasses.CloneAlphamap);
// apply texture modifications and perform cleanup. same thing as calling TerrainPaintUtility.EndPaintTexture
targetContext.ScatterAlphamap("Terrain Paint - Clone Brush (Texture)");
// Restores RenderTexture.active
targetContext.Cleanup();
RTUtils.Release(brushMask);
}
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
if (Event.current.type == EventType.MouseDown)
{
m_PrevBrushPos = editContext.uv;
}
float min = Mathf.Min(terrain.terrainData.size.x, terrain.terrainData.size.z);
float extent = editContext.brushSize * Mathf.Lerp(1.2f, 1.0f, 1.0f - m_Extent) + min * Mathf.Lerp(0.1f, 1.0f, m_Extent);
m_brushStrength = editContext.brushStrength;
Vector2 waterVel = (editContext.uv - m_PrevBrushPos) * m_BrushVel * -10000.0f;
m_PrevBrushPos = editContext.uv;
GetPaintMaterials();
m_Material.SetVector("_WaterVel", waterVel);
if (continuing && editContext.brushSize == oldBrushSize && terrain == oldTerrain)
{
Vector2 shift = BrushUVDelta(editContext.uv, terrain, soilWater[0].width, soilWater[0].height);
if (Mathf.Max(Mathf.Abs(shift.x), Mathf.Abs(shift.y)) < 0.5f)
{
m_Material.SetVector("_WaterShift", shift);
return(true);
}
}
oldTerrain = terrain;
oldBrushSize = editContext.brushSize;
continuing = true;
m_Material.SetFloat("_HeightScale", terrain.terrainData.size.y);
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, extent, 0.0f);
Rect rect = brushXform.GetBrushXYBounds();
Vector2 oldUV = rect.center;
oldUV.x *= 0.5f / terrain.terrainData.bounds.extents.x;
oldUV.y *= 0.5f / terrain.terrainData.bounds.extents.z;
if (terrain.leftNeighbor == null)
{
rect.x = Mathf.Max(0.0f, rect.x);
}
if (terrain.bottomNeighbor == null)
{
rect.y = Mathf.Max(0.0f, rect.y);
}
if (terrain.leftNeighbor == null && terrain.rightNeighbor == null)
{
rect.width = Mathf.Min(rect.width, terrain.terrainData.bounds.extents.x * 2.0f);
}
if (terrain.topNeighbor == null && terrain.bottomNeighbor == null)
{
rect.height = Mathf.Min(rect.height, terrain.terrainData.bounds.extents.z * 2.0f);
}
if (terrain.rightNeighbor == null)
{
rect.x = Mathf.Min(rect.x, terrain.terrainData.bounds.extents.x * 2.0f - rect.width);
}
if (terrain.topNeighbor == null)
{
rect.y = Mathf.Min(rect.y, terrain.terrainData.bounds.extents.z * 2.0f - rect.height);
}
Vector2 uv = rect.center;
uv.x *= 0.5f / terrain.terrainData.bounds.extents.x;
uv.y *= 0.5f / terrain.terrainData.bounds.extents.z;
if (m_TextureMask || m_TextureStencil)
{
TerrainLayer maskTerrainLayer = terrain.terrainData.terrainLayers[m_TextureMask ? m_maskIndex : m_stencilIndex];
maskContext = TerrainPaintUtility.BeginPaintTexture(terrain, rect, maskTerrainLayer);
if (maskContext == null)
{
return(false);
}
}
SetMaterial(m_Material, editContext);
src = 0;
InitHeightTextures(terrain, rect);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(heightContext, brushXform, m_Material);
InitWaterSim(heightContext.sourceRenderTexture.width, heightContext.sourceRenderTexture.height);
InitDisplay(terrain, new Vector2(rect.width, rect.height), uv);
float interp = editContext.brushSize / extent;
uvBase = uv * (1.0f - interp) + oldUV * interp;
Vector2 shiftStart = BrushUVDelta(editContext.uv, terrain, soilWater[0].width, soilWater[0].height);
m_Material.SetVector("_WaterShift", shiftStart);
m_Material.SetFloat("_Extent", extent / editContext.brushSize);
return(false);
}
public PaintContext AcquireTexture(bool writable, Terrain terrain, Rect boundsInTerrainSpace, TerrainLayer layer, int extraBorderPixels = 0)
{
m_WriteToTexture = writable;
m_TextureContext = TerrainPaintUtility.BeginPaintTexture(terrain, boundsInTerrainSpace, layer, extraBorderPixels);
return(m_TextureContext);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
commonUI.OnPaint(terrain, editContext);
if (!commonUI.allowPaint)
{
return(true);
}
if (Event.current.type == EventType.MouseDown)
{
m_PrevBrushPos = editContext.uv;
return(false);
}
if (Event.current.type == EventType.MouseDrag && m_PreviousEvent == EventType.MouseDrag)
{
Vector2 uv = editContext.uv;
if (commonUI.ScatterBrushStamp(ref terrain, ref uv))
{
Material mat = GetPaintMaterial();
Vector2 smudgeDir = uv - m_PrevBrushPos;
BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, uv, commonUI.brushSize, commonUI.brushRotation);
Vector4 brushParams = new Vector4(commonUI.brushStrength, smudgeDir.x, smudgeDir.y, 0);
mat.SetTexture("_BrushTex", editContext.brushTexture);
mat.SetVector("_BrushParams", brushParams);
//smudge splat map
if (m_AffectMaterials)
{
for (int i = 0; i < terrain.terrainData.terrainLayers.Length; i++)
{
TerrainLayer layer = terrain.terrainData.terrainLayers[i];
if (layer == null)
{
continue; // nothing to paint if the layer is NULL
}
PaintContext sampleContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), layer);
Graphics.Blit(sampleContext.sourceRenderTexture, sampleContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintTexture(sampleContext, "Terrain Paint - Twist Brush (Texture)");
}
}
//smudge the height map
if (m_AffectHeight)
{
PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Twist Brush (Height)");
}
m_PrevBrushPos = uv;
}
}
m_PreviousEvent = Event.current.type;
return(false);
}
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);
}
public static PaintContext BeginFillTexture(Terrain terrain, TerrainLayer inputLayer)
{
return(TerrainPaintUtility.BeginPaintTexture(terrain, GetTerrainBounds(terrain), inputLayer));
}