private void BindUniformBlock(OpenGLESShaderSet shaderSet, int slot, int blockLocation, OpenGLESConstantBuffer cb)
{
if (slot > _maxConstantBufferSlots)
{
throw new VeldridException($"Too many constant buffers used. Limit is {_maxConstantBufferSlots}.");
}
// Bind Constant Buffer to slot
if (_constantBuffersBySlot[slot] == cb)
{
if (_newConstantBuffersBySlot[slot] != null)
{
_newConstantBuffersCount -= 1;
}
_newConstantBuffersBySlot[slot] = null;
}
else
{
if (_newConstantBuffersBySlot[slot] == null)
{
_newConstantBuffersCount += 1;
}
_newConstantBuffersBySlot[slot] = cb;
}
// Bind slot to uniform block location. Performs internal caching to avoid GL calls.
shaderSet.BindConstantBuffer(slot, blockLocation, cb);
}
private unsafe void SetUniformLocationDataSlow(OpenGLESConstantBuffer cb, OpenGLESUniformStorageAdapter storageAdapter)
{
// NOTE: This is slow -- avoid using uniform locations in shader code. Prefer uniform blocks.
int dataSizeInBytes = cb.BufferSize;
byte *data = stackalloc byte[dataSizeInBytes];
cb.GetData((IntPtr)data, dataSizeInBytes);
storageAdapter.SetData((IntPtr)data, dataSizeInBytes);
}
public bool BindConstantBuffer(int slot, int blockLocation, OpenGLESConstantBuffer cb)
{
// NOTE: slot == uniformBlockIndex
if (_boundConstantBuffers.TryGetValue(slot, out OpenGLESConstantBuffer boundCB) && boundCB == cb)
{
return(false);
}
GL.UniformBlockBinding(ProgramID, blockLocation, slot);
Utilities.CheckLastGLES3Error();
_boundConstantBuffers[slot] = cb;
return(true);
}
private void CommitNewConstantBufferBindings_SingleBind()
{
int remainingBindings = _newConstantBuffersCount;
for (int slot = 0; slot < _maxConstantBufferSlots; slot++)
{
if (remainingBindings == 0)
{
return;
}
OpenGLESConstantBuffer cb = _newConstantBuffersBySlot[slot];
if (cb != null)
{
GL.BindBufferRange(BufferRangeTarget.UniformBuffer, slot, cb.BufferID, IntPtr.Zero, cb.BufferSize);
Utilities.CheckLastGLES3Error();
remainingBindings -= 1;
}
}
}
public abstract void Bind(OpenGLESConstantBuffer cb);
public override void Bind(OpenGLESConstantBuffer cb)
{
throw new NotImplementedException();
}
public override void Bind(OpenGLESConstantBuffer cb)
{
cb.BindToBlock(ProgramID, BlockIndex, _dataSizeInBytes, BindingIndex);
}