public static void Render(
RenderTexture rt,
GConditionalStampLayer layer,
GStylizedTerrain terrain,
Matrix4x4 stamperTransform,
Texture mask,
Texture falloffTexture,
Vector2[] uvPoints,
bool useTerrainMask)
{
GCommon.ClearRT(rt);
if (layer.Ignore)
{
return;
}
Material brushMat = GInternalMaterials.TextureStamperBrushMaterial;
int resolution = Mathf.Max(rt.width, rt.height);
//no need to release these maps
RenderTexture heightMap = terrain.GetHeightMap(resolution);
RenderTexture normalMap =
layer.NormalMapMode == GNormalMapMode.Sharp ? terrain.GetSharpNormalMap(resolution) :
layer.NormalMapMode == GNormalMapMode.Interpolated ? terrain.GetInterpolatedNormalMap(resolution) :
layer.NormalMapMode == GNormalMapMode.PerPixel ? terrain.GetPerPixelNormalMap(resolution) : null;
brushMat.SetTexture("_HeightMap", heightMap);
Vector3 position = stamperTransform.MultiplyPoint(Vector3.zero);
Vector3 scale = stamperTransform.lossyScale;
float stamperMinHeight = terrain.WorldPointToNormalized(position).y;
float stamperMaxHeight = terrain.WorldPointToNormalized(position + Vector3.up * scale.y).y;
brushMat.SetFloat("_StamperMinHeight", stamperMinHeight);
brushMat.SetFloat("_StamperMaxHeight", stamperMaxHeight);
Vector3 terrainSize = new Vector3(
terrain.TerrainData.Geometry.Width,
terrain.TerrainData.Geometry.Height,
terrain.TerrainData.Geometry.Length);
brushMat.SetTexture("_Mask", mask);
brushMat.SetTexture("_Falloff", falloffTexture);
brushMat.SetFloat("_MinHeight", GUtilities.InverseLerpUnclamped(0, terrainSize.y, layer.MinHeight));
brushMat.SetFloat("_MaxHeight", GUtilities.InverseLerpUnclamped(0, terrainSize.y, layer.MaxHeight));
brushMat.SetTexture("_HeightTransition", layer.heightTransitionTexture);
brushMat.SetFloat("_MinSlope", layer.MinSlope * Mathf.Deg2Rad);
brushMat.SetFloat("_MaxSlope", layer.MaxSlope * Mathf.Deg2Rad);
brushMat.SetTexture("_SlopeTransition", layer.slopeTransitionTexture);
brushMat.SetVector("_NoiseOrigin", layer.NoiseOrigin);
brushMat.SetFloat("_NoiseFrequency", layer.NoiseFrequency);
brushMat.SetInt("_NoiseOctaves", layer.NoiseOctaves);
brushMat.SetFloat("_NoiseLacunarity", layer.NoiseLacunarity);
brushMat.SetFloat("_NoisePersistence", layer.NoisePersistence);
brushMat.SetTexture("_NoiseRemap", layer.noiseRemapTexture);
brushMat.SetTexture("_NormalMap", normalMap);
if (useTerrainMask)
{
brushMat.SetTexture("_TerrainMask", terrain.TerrainData.Mask.MaskMap);
}
else
{
brushMat.SetTexture("_TerrainMask", Texture2D.blackTexture);
}
GCommon.SetMaterialKeywordActive(brushMat, BLEND_HEIGHT_KW, layer.BlendHeight);
GCommon.SetMaterialKeywordActive(brushMat, BLEND_SLOPE_KW, layer.BlendSlope);
GCommon.SetMaterialKeywordActive(brushMat, BLEND_NOISE_KW, layer.BlendNoise);
DrawOnBrushTexture(rt, uvPoints, brushMat, 0);
}