Add CompositeGeometryManager

This handles FP and BP operations on multiple data objects at once,
splitting them to fit in GPU memory where necessary.

1 files changed, 99 insertions, 0 deletions

diff --git a/cuda/3d/mem3d.h b/cuda/3d/mem3d.h
new file mode 100644
index 0000000..82bad19
--- /dev/null
+++ b/cuda/3d/mem3d.h
@@ -0,0 +1,99 @@
+/*
+-----------------------------------------------------------------------
+Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
+           2014-2015, CWI, Amsterdam
+
+Contact: astra@uantwerpen.be
+Website: http://sf.net/projects/astra-toolbox
+
+This file is part of the ASTRA Toolbox.
+
+
+The ASTRA Toolbox is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+The ASTRA Toolbox is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------
+*/
+
+#ifndef _CUDA_MEM3D_H
+#define _CUDA_MEM3D_H
+
+#include <boost/shared_ptr.hpp>
+
+#include "astra3d.h"
+
+namespace astra {
+class CVolumeGeometry3D;
+class CProjectionGeometry3D;	
+}
+
+namespace astraCUDA3d {
+
+// TODO: Make it possible to delete these handles when they're no longer
+// necessary inside the FP/BP
+//
+// TODO: Add functions for querying capacity
+
+struct SMemHandle3D_internal;
+
+struct MemHandle3D {
+	boost::shared_ptr<SMemHandle3D_internal> d;
+	operator bool() const { return (bool)d; }
+};
+
+struct SSubDimensions3D {
+	unsigned int nx;
+	unsigned int ny;
+	unsigned int nz;
+	unsigned int pitch;
+	unsigned int subnx;
+	unsigned int subny;
+	unsigned int subnz;
+	unsigned int subx;
+	unsigned int suby;
+	unsigned int subz;
+};
+
+/*
+// Useful or not?
+enum Mem3DCopyMode {
+	MODE_SET,
+	MODE_ADD
+};
+*/
+
+enum Mem3DZeroMode {
+	INIT_NO,
+	INIT_ZERO
+};
+
+size_t availableGPUMemory();
+
+MemHandle3D allocateGPUMemory(unsigned int x, unsigned int y, unsigned int z, Mem3DZeroMode zero);
+
+bool copyToGPUMemory(const float *src, MemHandle3D dst, const SSubDimensions3D &pos);
+
+bool copyFromGPUMemory(float *dst, MemHandle3D src, const SSubDimensions3D &pos);
+
+bool freeGPUMemory(MemHandle3D handle);
+
+
+bool FP(const astra::CProjectionGeometry3D* pProjGeom, MemHandle3D projData, const astra::CVolumeGeometry3D* pVolGeom, MemHandle3D volData, int iDetectorSuperSampling, astra::Cuda3DProjectionKernel projKernel);
+
+bool BP(const astra::CProjectionGeometry3D* pProjGeom, MemHandle3D projData, const astra::CVolumeGeometry3D* pVolGeom, MemHandle3D volData, int iVoxelSuperSampling);
+
+
+
+}
+
+#endif