//----------------------------------------------------------------------------
private static bool ResizeParticleMeshBuffer(Mesh mesh,
SMeshDesc renderer,
uint usedVertexCount,
uint usedIndexCount,
uint reservedVertexCount,
uint reservedIndexCount,
bool useLargeIdx)
{
bool hasBeenResized = false;
if (mesh.vertexCount < usedVertexCount)
{
// We only do the transition from uint16 to uint32 because the transition clear the index buffer...
if (useLargeIdx == true && mesh.indexFormat == IndexFormat.UInt16)
{
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
}
else if (useLargeIdx == false && mesh.indexFormat == IndexFormat.UInt32)
{
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt16;
}
mesh.Clear();
mesh.vertices = new Vector3[reservedVertexCount]; // positions
if (renderer.HasMaterialFlag(EMaterialFlags.Has_Color))
{
mesh.colors = new Color[reservedVertexCount]; // color
}
if (renderer.HasMaterialFlag(EMaterialFlags.Has_Lighting))
{
mesh.normals = new Vector3[reservedVertexCount]; // normal
}
if (renderer.HasMaterialFlag(EMaterialFlags.Has_RibbonComplex))
{
mesh.uv = new Vector2[reservedVertexCount]; // uvFactors
mesh.uv2 = new Vector2[reservedVertexCount]; // uvScale
mesh.uv3 = new Vector2[reservedVertexCount]; // uvOffset
if (renderer.HasMaterialFlag(EMaterialFlags.Has_AlphaRemap))
{
mesh.uv4 = new Vector2[reservedVertexCount]; // alpha cursor
}
}
else if (renderer.HasMaterialFlag(EMaterialFlags.Has_AnimBlend))
{
mesh.uv = new Vector2[reservedVertexCount]; // uv0
mesh.uv2 = new Vector2[reservedVertexCount]; // uv1
mesh.uv3 = new Vector2[reservedVertexCount]; // atlas id and if Has_AlphaRemap, alpha cursor
}
else
{
if (renderer.HasMaterialFlag(EMaterialFlags.Has_Diffuse))
{
mesh.uv = new Vector2[reservedVertexCount]; // uv0
}
if (renderer.HasMaterialFlag(EMaterialFlags.Has_AlphaRemap))
{
mesh.uv2 = new Vector2[reservedVertexCount]; // alpha cursor
}
}
hasBeenResized = true;
}
if (mesh.GetIndexCount(0) < usedIndexCount)
{
int[] triangles = new int[reservedIndexCount]; // index
//fix to set the right vertex buffer size on PS4 : fill the index buffer with vertex ids
if (Application.platform == RuntimePlatform.PS4)
{
for (int i = 0; i < mesh.vertexCount; ++i)
{
triangles[i] = i;
}
}
mesh.triangles = triangles;
hasBeenResized = true;
}
return(hasBeenResized);
}
