private void ResampleGrassPatches()
{
List <GGrassInstance> grassInstances = new List <GGrassInstance>();
for (int i = 0; i < grassPatches.Length; ++i)
{
grassInstances.AddRange(grassPatches[i].Instances);
}
grassPatches = new GGrassPatch[PatchGridSize * PatchGridSize];
for (int x = 0; x < PatchGridSize; ++x)
{
for (int z = 0; z < patchGridSize; ++z)
{
int index = GUtilities.To1DIndex(x, z, PatchGridSize);
GGrassPatch patch = new GGrassPatch(this, x, z);
grassPatches[index] = patch;
}
}
AddGrassInstances(grassInstances);
}
private static void RenderGrass(GStylizedTerrain t, Camera cam)
{
if (t.TerrainData.Foliage.Grasses == null ||
t.TerrainData.Foliage.Grasses.Prototypes.Count == 0)
{
return;
}
List <GGrassPrototype> prototypes = t.TerrainData.Foliage.Grasses.Prototypes;
GGrassPatch[] patches = t.TerrainData.Foliage.GrassPatches;
if (patches == null)
{
return;
}
float grassDistance = t.TerrainData.Rendering.GrassDistance;
Vector3 dimension = new Vector3(
t.TerrainData.Geometry.Width,
t.TerrainData.Geometry.Height,
t.TerrainData.Geometry.Length);
float patchWorldRadius = dimension.x * 0.5f / t.TerrainData.Foliage.PatchGridSize;
Vector3 boundLocalPos = Vector3.zero;
Vector3 boundWorldPos = Vector3.zero;
int FLAG_CULLED = 0;
int FLAG_DIRTY = 1;
int FLAG_BATCHED = 2;
int[] flags = new int[patches.Length];
Rect[] dirtyRect = t.TerrainData.Foliage.GetGrassDirtyRegions();
for (int i = 0; i < patches.Length; ++i)
{
Rect uvRect = patches[i].GetUvRange();
boundLocalPos.Set(
uvRect.center.x * dimension.x,
0,
uvRect.center.y * dimension.z);
boundWorldPos = t.transform.TransformPoint(boundLocalPos);
boundWorldPos.y = cam.transform.position.y;
if (Vector3.Distance(boundWorldPos, cam.transform.position) - patchWorldRadius > grassDistance)
{
flags[i] = FLAG_CULLED;
continue;
}
for (int r = 0; r < dirtyRect.Length; ++r)
{
if (dirtyRect[r].Overlaps(uvRect))
{
flags[i] = FLAG_DIRTY;
break;
}
}
if (flags[i] == FLAG_DIRTY)
{
continue;
}
flags[i] = FLAG_BATCHED;
}
Vector3 meshLocalPos = Vector3.zero;
Vector3 meshWorldPos = Vector3.zero;
grassMaterialPropertyBlock.Clear();
if (t.TerrainData.Foliage.EnableInteractiveGrass)
{
grassMaterialPropertyBlock.SetTexture(VECTOR_FIELD_PROPERTY, t.GetGrassVectorFieldRenderTexture());
grassMaterialPropertyBlock.SetMatrix(WORLD_TO_NORMALIZED_PROPERTY, t.GetWorldToNormalizedMatrix());
}
grassMaterialPropertyBlock.SetTexture(NOISETEX_PROPERTY, GGriffinSettings.Instance.DefaultNoiseTexture);
IEnumerator <GWindZone> windZone = GWindZone.ActiveWindZones.GetEnumerator();
if (windZone.MoveNext())
{
GWindZone w = windZone.Current;
grassMaterialPropertyBlock.SetVector(WIND_PROPERTY, w.GetWindParams());
}
//draw batched
//Material grassMat = GCommon.CurrentRenderPipeline == GRenderPipelineType.Lightweight ?
// GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassMaterialLW :
// GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassMaterial;
Material grassMat = null;
if (GCommon.CurrentRenderPipeline == GRenderPipelineType.Builtin)
{
grassMat = t.TerrainData.Foliage.EnableInteractiveGrass ?
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassInteractiveMaterial :
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassMaterial;
if (grassMat == null)
{
Debug.Log("Grass material missing. Try re-installing the Polaris V2 package.");
}
}
else if (GCommon.CurrentRenderPipeline == GRenderPipelineType.Lightweight)
{
grassMat = t.TerrainData.Foliage.EnableInteractiveGrass ?
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassInteractiveMaterialLWRP :
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassMaterialLWRP;
if (grassMat == null)
{
Debug.Log("Grass material missing. Try installing the 'Lightweight Render Pipeline Support' extension from the Extension Window (Window>Griffin>Tools>Extension)");
}
}
else if (GCommon.CurrentRenderPipeline == GRenderPipelineType.Universal)
{
grassMat = t.TerrainData.Foliage.EnableInteractiveGrass ?
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassInteractiveMaterialURP :
GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassMaterialURP;
if (grassMat == null)
{
Debug.Log("Grass material missing. Try installing the 'Universal Render Pipeline Support' extension from the Extension Window (Window>Griffin>Tools>Extension)");
}
}
if (grassMat == null)
{
return;
}
for (int i = 0; i < patches.Length; ++i)
{
if (flags[i] != FLAG_BATCHED)
{
continue;
}
for (int p = 0; p < prototypes.Count; ++p)
{
grassMaterialPropertyBlock.SetColor(COLOR_PROPERTY, prototypes[p].Color);
grassMaterialPropertyBlock.SetFloat(BEND_FACTOR_PROPERTY, prototypes[p].BendFactor);
if (prototypes[p].Shape != GGrassShape.DetailObject && prototypes[p].Texture != null)
{
grassMaterialPropertyBlock.SetTexture(MAINTEX_PROPERTY, prototypes[p].Texture);
}
Mesh mesh = patches[i].GetMesh(p);
if (mesh != null)
{
meshLocalPos = mesh.bounds.center;
meshWorldPos = t.transform.TransformPoint(meshLocalPos);
if (Vector3.Distance(meshWorldPos, cam.transform.position) - patchWorldRadius > grassDistance)
{
continue;
}
Graphics.DrawMesh(
mesh,
Matrix4x4.TRS(t.transform.position, Quaternion.identity, Vector3.one),
prototypes[p].Shape == GGrassShape.DetailObject ? prototypes[p].DetailMaterial : grassMat,
prototypes[p].Layer,
cam,
0,
prototypes[p].Shape == GGrassShape.DetailObject ? null : grassMaterialPropertyBlock,
prototypes[p].Shape == GGrassShape.DetailObject ? prototypes[p].ShadowCastingMode : ShadowCastingMode.On,
prototypes[p].Shape == GGrassShape.DetailObject ? prototypes[p].ReceiveShadow : true,
null,
LightProbeUsage.BlendProbes,
null);
}
}
}
if (GCommon.CurrentRenderPipeline == GRenderPipelineType.Builtin)
{
return;
}
Vector3 localPos = Vector3.zero;
Vector3 worldPos = Vector3.zero;
Vector3 scale = Vector3.zero;
Material previewMat = GGriffinSettings.Instance.TerrainDataDefault.Foliage.GrassPreviewMaterial;
for (int pIndex = 0; pIndex < prototypes.Count; ++pIndex)
{
GGrassPrototype proto = prototypes[pIndex];
//grassMaterialPropertyBlock.Clear();
//grassMaterialPropertyBlock.SetTexture(MAINTEX_PROPERTY, proto.Texture);
for (int i = 0; i < patches.Length; ++i)
{
if (flags[i] != FLAG_DIRTY)
{
continue;
}
GGrassPatch patch = patches[i];
int instanceCount = patch.Instances.Count;
for (int j = 0; j < instanceCount; ++j)
{
GGrassInstance grass = patch.Instances[j];
if (grass.PrototypeIndex != pIndex)
{
continue;
}
localPos.Set(
dimension.x * grass.Position.x,
dimension.y * grass.Position.y,
dimension.z * grass.Position.z);
worldPos = t.transform.TransformPoint(localPos);
scale.Set(
prototypes[grass.PrototypeIndex].Size.x * grass.Scale.x,
prototypes[grass.PrototypeIndex].Size.y * grass.Scale.y,
prototypes[grass.PrototypeIndex].Size.z * grass.Scale.z);
Mesh mesh = prototypes[grass.PrototypeIndex].GetBaseMesh();
Graphics.DrawMesh(
mesh,
Matrix4x4.TRS(worldPos, grass.Rotation, scale),
previewMat,
prototypes[grass.PrototypeIndex].Layer,
cam,
0,
null, //grassMaterialPropertyBlock
ShadowCastingMode.On,
true,
null,
LightProbeUsage.BlendProbes,
null);
}
}
}
}
