public void DrawSprites(GroupedElementVertexArray vertexData, int numVertices)
{
Array.Copy(vertexData.positions, Vertices, numVertices);
Array.Copy(vertexData.texcoords, UVs, numVertices);
Array.Copy(vertexData.colors, Colors, numVertices);
Array.Clear(Vertices, numVertices, Vertices.Length - numVertices);
DrawFunction(this);
}
internal void DrawSpritePrimitives(GroupedElementVertexArray vertexData, int numVertices)
{
Material mat = activeEffect.Material;
mat.mainTexture = Textures[0].UnityTexture;
activeEffect.OnApplyPostTexture();
mat.SetPass(0);
SpriteMeshHolder mesh = spriteMeshPool.Get(numVertices / 4);
mesh.DrawSprites(vertexData, numVertices);
}
/// <summary>
/// Resize and recreate the missing indices for the index and vertex position color buffers.
/// </summary>
/// <param name="numBatchItems"></param>
private void EnsureArrayCapacity(int numBatchItems)
{
//int neededCapacity = 6 * numBatchItems;
//if (_index != null && neededCapacity <= _index.Length)
//{
// // Short circuit out of here because we have enough capacity.
// return;
//}
//short[] newIndex = new short[6 * numBatchItems];
//int start = 0;
//if (_index != null)
//{
// _index.CopyTo(newIndex, 0);
// start = _index.Length / 6;
//}
//for (var i = start; i < numBatchItems; i++)
//{
// /*
// * TL TR
// * 0----1 0,1,2,3 = index offsets for vertex indices
// * | /| TL,TR,BL,BR are vertex references in SpriteBatchItem.
// * | / |
// * | / |
// * |/ |
// * 2----3
// * BL BR
// */
// // Triangle 1
// newIndex[i * 6 + 0] = (short)(i * 4);
// newIndex[i * 6 + 1] = (short)(i * 4 + 1);
// newIndex[i * 6 + 2] = (short)(i * 4 + 2);
// // Triangle 2
// newIndex[i * 6 + 3] = (short)(i * 4 + 1);
// newIndex[i * 6 + 4] = (short)(i * 4 + 3);
// newIndex[i * 6 + 5] = (short)(i * 4 + 2);
//}
//_index = newIndex;
//_vertexArray = new VertexPositionColorTexture[4 * numBatchItems];
int requiredSize = 4 * numBatchItems;
if (_vertexArray.Size < requiredSize)
{
_vertexArray = new GroupedElementVertexArray(requiredSize);
}
}
