/// <summary>
/// Upload a floatingpoint texture from the graphics hardware.
/// This method is only valid for resources of type R32_Floatfloat.
/// </summary>
public unsafe MemoryMappedTextureFloat UploadToFloatBuffer()
{
MemoryMappedTextureFloat result = new MemoryMappedTextureFloat(
new Size2(m_width, m_height));
UploadToFloatBuffer(result);
return(result);
}
/// <summary>
/// Upload a floatingpoint texture from the graphics hardware.
/// This method is only valid for resources of type R32_Floatfloat.
/// </summary>
/// <param name="floatBuffer">The target float buffer to which to copy all ObjectIDs.</param>
public unsafe void UploadToFloatBuffer(MemoryMappedTextureFloat floatBuffer)
{
// Check current format
if (m_format != GraphicsHelper.DEFAULT_TEXTURE_FORMAT_OBJECT_ID)
{
throw new SeeingSharpGraphicsException("Invalid format for texture uploading to gdi bitmap (" + m_format + ")!");
}
if (floatBuffer.Width != m_width)
{
throw new SeeingSharpGraphicsException("The width of the textures during texture upload does not match!");
}
if (floatBuffer.Height != m_height)
{
throw new SeeingSharpGraphicsException("The height of the textures during texture upload does not match!");
}
// Upload the texture
CopyTextureToStagingResource();
// Read the data into the .Net data block
SharpDX.DataBox dataBox = m_device.DeviceImmediateContextD3D11.MapSubresource(
m_copyHelperTextureStaging, 0, D3D11.MapMode.Read, D3D11.MapFlags.None);
try
{
int rowPitchSource = dataBox.RowPitch;
int rowPitchDestination = floatBuffer.Width * 4;
if ((rowPitchSource > 0) && (rowPitchSource < 20000) &&
(rowPitchDestination > 0) && (rowPitchDestination < 20000))
{
for (int loopY = 0; loopY < m_height; loopY++)
{
CommonTools.CopyMemory(
dataBox.DataPointer + loopY * rowPitchSource,
floatBuffer.Pointer + loopY * rowPitchDestination,
(ulong)rowPitchDestination);
}
}
}
finally
{
m_device.DeviceImmediateContextD3D11.UnmapSubresource(m_copyHelperTextureStaging, 0);
}
}