public void SampleCopyChannel_xyzw2x(CommandBuffer cmd, RTHandle source, RTHandle target, Rendering.RectInt rect)
{
Debug.Assert(source.rt.volumeDepth == target.rt.volumeDepth);
SampleCopyChannel(cmd, rect, _Source4, source, _Result1, target, source.rt.volumeDepth, k_SampleKernel_xyzw2x_8, k_SampleKernel_xyzw2x_1);
}
void SampleCopyChannel(
CommandBuffer cmd,
Rendering.RectInt rect,
int _source,
RenderTargetIdentifier source,
int _target,
RenderTargetIdentifier target,
int slices,
int kernel8,
int kernel1)
{
Rendering.RectInt main, topRow, rightCol, topRight;
unsafe
{
Rendering.RectInt *dispatch1Rects = stackalloc Rendering.RectInt[3];
int dispatch1RectCount = 0;
Rendering.RectInt dispatch8Rect = Rendering.RectInt.zero;
if (TileLayoutUtils.TryLayoutByTiles(
rect,
8,
out main,
out topRow,
out rightCol,
out topRight))
{
if (topRow.width > 0 && topRow.height > 0)
{
dispatch1Rects[dispatch1RectCount] = topRow;
++dispatch1RectCount;
}
if (rightCol.width > 0 && rightCol.height > 0)
{
dispatch1Rects[dispatch1RectCount] = rightCol;
++dispatch1RectCount;
}
if (topRight.width > 0 && topRight.height > 0)
{
dispatch1Rects[dispatch1RectCount] = topRight;
++dispatch1RectCount;
}
dispatch8Rect = main;
}
else if (rect.width > 0 && rect.height > 0)
{
dispatch1Rects[dispatch1RectCount] = rect;
++dispatch1RectCount;
}
cmd.SetComputeTextureParam(m_Shader, kernel8, _source, source);
cmd.SetComputeTextureParam(m_Shader, kernel1, _source, source);
cmd.SetComputeTextureParam(m_Shader, kernel8, _target, target);
cmd.SetComputeTextureParam(m_Shader, kernel1, _target, target);
if (dispatch8Rect.width > 0 && dispatch8Rect.height > 0)
{
var r = dispatch8Rect;
// Use intermediate array to avoid garbage
_IntParams[0] = r.x;
_IntParams[1] = r.y;
cmd.SetComputeIntParams(m_Shader, _RectOffset, _IntParams);
cmd.DispatchCompute(m_Shader, kernel8, (int)Mathf.Max(r.width / 8, 1), (int)Mathf.Max(r.height / 8, 1), slices);
}
for (int i = 0, c = dispatch1RectCount; i < c; ++i)
{
var r = dispatch1Rects[i];
// Use intermediate array to avoid garbage
_IntParams[0] = r.x;
_IntParams[1] = r.y;
cmd.SetComputeIntParams(m_Shader, _RectOffset, _IntParams);
cmd.DispatchCompute(m_Shader, kernel1, (int)Mathf.Max(r.width, 1), (int)Mathf.Max(r.height, 1), slices);
}
}
}
