private void DrawInstanced(int prototypeIndex)
{
GTreePrototype proto = prototypes[prototypeIndex];
Mesh mesh = proto.sharedMesh;
Material[] materials = proto.sharedMaterials;
int submeshCount = prototypeCache[prototypeIndex].subMeshCount;
int drawCount = Mathf.Min(submeshCount, materials.Length);
Mesh billboardMesh = null;
Material billboardMaterial = null;
BillboardAsset billboard = proto.billboard;
if (billboard != null)
{
billboardMesh = GBillboardUtilities.GetMesh(billboard);
billboardMaterial = billboard.material;
}
bool canDrawInstanced = prototypeCache[prototypeIndex].canDrawInstanced;
bool canDrawBillboardInstanced = prototypeCache[prototypeIndex].canDrawBillboardInstanced;
batchInstanceCount = 0;
billboardBatchInstanceCount = 0;
int count = instancePrototypeIndices.Length;
for (int i = 0; i <= count; ++i)
{
if (i == count || batchInstanceCount == BATCH_MAX_INSTANCE_COUNT)
{
if (canDrawInstanced)
{
for (int d = 0; d < drawCount; ++d)
{
Graphics.DrawMeshInstanced(
mesh, d, materials[d],
batchContainer, batchInstanceCount, null,
proto.shadowCastingMode, proto.receiveShadow, proto.layer,
camera, LightProbeUsage.BlendProbes);
}
batchInstanceCount = 0;
}
}
if (i == count || billboardBatchInstanceCount == BATCH_MAX_INSTANCE_COUNT)
{
if (billboard != null && canDrawBillboardInstanced)
{
Graphics.DrawMeshInstanced(
billboardMesh, 0, billboardMaterial,
billboardBatchContainer, billboardBatchInstanceCount, null,
proto.billboardShadowCastingMode, proto.BillboardReceiveShadow, proto.layer,
camera, LightProbeUsage.BlendProbes);
billboardBatchInstanceCount = 0;
}
}
if (i == count)
{
break;
}
if (instanceCullResults[i] == CULLED)
{
continue;
}
if (instancePrototypeIndices[i] != prototypeIndex)
{
continue;
}
if (instanceCullResults[i] == VISIBLE)
{
if (canDrawInstanced)
{
batchContainer[batchInstanceCount] = instanceTransforms[i];
batchInstanceCount += 1;
}
else
{
for (int d = 0; d < drawCount; ++d)
{
Graphics.DrawMesh(
mesh, instanceTransforms[i], materials[d],
proto.layer, camera, d, null,
proto.shadowCastingMode, proto.receiveShadow,
null, LightProbeUsage.BlendProbes, null);
}
}
}
else if (instanceCullResults[i] == BILLBOARD && billboard != null)
{
if (canDrawBillboardInstanced)
{
billboardBatchContainer[billboardBatchInstanceCount] = instanceTransforms[i];
billboardBatchInstanceCount += 1;
}
else
{
Graphics.DrawMesh(
billboardMesh, instanceTransforms[i], billboardMaterial,
proto.layer, camera, 0, null,
proto.billboardShadowCastingMode, proto.BillboardReceiveShadow,
null, LightProbeUsage.BlendProbes, null);
}
}
}
}
private void InitFrame(Camera cam)
{
foliage = terrain.TerrainData.Foliage;
terrainPosition = terrain.transform.position;
terrainSize = terrain.TerrainData.Geometry.Size;
treeDistance = terrain.TerrainData.Rendering.TreeDistance;
billboardStart = terrain.TerrainData.Rendering.BillboardStart;
cullVolumeBias = GRuntimeSettings.Instance.renderingDefault.cullVolumeBias;
if (terrain.TerrainData.Foliage.Trees != null)
{
prototypes = terrain.TerrainData.Foliage.Trees.Prototypes;
}
else
{
prototypes = new List <GTreePrototype>();
}
if (prototypeCache == null || prototypeCache.Length != prototypes.Count)
{
prototypeCache = new PrototypeCache[prototypes.Count];
}
for (int i = 0; i < prototypes.Count; ++i)
{
GTreePrototype p = prototypes[i];
PrototypeCache cache = prototypeCache[i];
bool valid = prototypes[i].IsValid;
cache.validation = valid;
if (valid)
{
cache.subMeshCount = p.sharedMesh.subMeshCount;
cache.canDrawInstanced = IsInstancingEnabledForAllMaterials(p);
cache.canDrawBillboardInstanced =
p.billboard != null &&
p.billboard.material != null &&
p.billboard.material.enableInstancing;
}
if (p.billboard != null)
{
cache.billboardMesh = GBillboardUtilities.GetMesh(p.billboard);
}
if (p.billboard != null && p.billboard.material != null)
{
if (cache.billboardImageTexcoords == null ||
cache.billboardImageTexcoords.Length != p.billboard.imageCount)
{
cache.billboardImageTexcoords = p.billboard.GetImageTexCoords();
}
Material mat = p.billboard.material;
mat.SetVectorArray(BILLBOARD_IMAGE_TEXCOORDS, cache.billboardImageTexcoords);
mat.SetInt(BILLBOARD_IMAGE_COUNT, p.billboard.imageCount);
}
prototypeCache[i] = cache;
}
enableInstancing = terrain.TerrainData.Rendering.EnableInstancing && SystemInfo.supportsInstancing;
normalizedToLocalMatrix = Matrix4x4.Scale(terrainSize);
localToWorldMatrix = terrain.transform.localToWorldMatrix;
normalizedToWorldMatrix = localToWorldMatrix * normalizedToLocalMatrix;
camera = cam;
if (frustum == null)
{
frustum = new Plane[6];
}
GFrustumUtilities.Calculate(camera, frustum, treeDistance);
if (nearFrustumCorners == null)
{
nearFrustumCorners = new Vector3[4];
}
if (farFrustumCorners == null)
{
farFrustumCorners = new Vector3[4];
}
if (batchContainer == null)
{
batchContainer = new Matrix4x4[BATCH_MAX_INSTANCE_COUNT];
}
if (billboardBatchContainer == null)
{
billboardBatchContainer = new Matrix4x4[BATCH_MAX_INSTANCE_COUNT];
}
if (!isWarningLogged)
{
for (int i = 0; i < prototypes.Count; ++i)
{
if (!prototypes[i].IsValid)
{
string msg = string.Format(
"Tree prototye {0}: " +
"The prototype is not valid, make sure you've assigned a prefab with correct mesh and materials setup.",
i);
Debug.LogWarning(msg);
}
if (enableInstancing && prototypes[i].IsValid)
{
if (!IsInstancingEnabledForAllMaterials(prototypes[i]))
{
string msg = string.Format(
"Tree prototype {0} ({1}): " +
"Instancing need to be enabled for all materials for the renderer to work at its best. " +
"Otherwise it will fallback to non-instanced for this prototype.",
i, prototypes[i].Prefab.name);
Debug.LogWarning(msg);
}
if (prototypes[i].billboard != null &&
prototypes[i].billboard.material != null &&
prototypes[i].billboard.material.enableInstancing == false)
{
string msg = string.Format(
"Tree prototype {0} ({1}): " +
"Instancing need to be enabled for billboard material for the renderer to work at its best. " +
"Otherwise it will fallback to non-instanced for this prototype when render billboards.",
i, prototypes[i].Prefab.name);
Debug.LogWarning(msg);
}
}
}
isWarningLogged = true;
}
}