public static bool NotEqual(ref DrawTextures left, ref DrawTextures right)
{
return(left.Texture0 != right.Texture0);
}
private void FlushBatch()
{
ElementInfo[] spriteQueueForBatch;
// If Deferred, then sprites are displayed in the same order they arrived
if (SortMode == SpriteSortMode.Deferred)
{
spriteQueueForBatch = drawsQueue;
}
else
{
// Else Sort all sprites according to their sprite order mode.
SortSprites();
spriteQueueForBatch = sortedDraws;
}
// Iterate on all sprites and group batch per texture.
int offset = 0;
var previousTexture = new DrawTextures();
for (int i = 0; i < drawsQueueCount; i++)
{
DrawTextures texture;
if (SortMode == SpriteSortMode.Deferred)
{
texture = drawTextures[i];
}
else
{
// Copy ordered sprites to the queue to batch
int index = sortIndices[i];
spriteQueueForBatch[i] = drawsQueue[index];
// Get the texture indirectly
texture = drawTextures[index];
}
if (DrawTextures.NotEqual(ref texture, ref previousTexture))
{
if (i > offset)
{
DrawBatchPerTexture(previousTexture.Texture0, previousTexture.Texture1, spriteQueueForBatch, offset, i - offset);
}
offset = i;
previousTexture = texture;
}
}
// Draw the last batch
DrawBatchPerTexture(previousTexture.Texture0, previousTexture.Texture1, spriteQueueForBatch, offset, drawsQueueCount - offset);
// Reset the queue.
Array.Clear(drawTextures, 0, drawsQueueCount);
drawsQueueCount = 0;
// When sorting is disabled, we persist mSortedSprites data from one batch to the next, to avoid
// unnecessary work in GrowSortedSprites. But we never reuse these when sorting, because re-sorting
// previously sorted items gives unstable ordering if some sprites have identical sort keys.
if (SortMode != SpriteSortMode.Deferred)
{
Array.Clear(sortedDraws, 0, sortedDraws.Length);
}
}
