Add gpu program params storage structure

This commit is contained in:
kaetemi 2013-09-08 01:36:01 +02:00
parent dbcf366a57
commit c47fc285f1
3 changed files with 268 additions and 1 deletions

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@ -0,0 +1,100 @@
/**
* \file gpu_program_params.h
* \brief CGPUProgramParams
* \date 2013-09-07 22:17GMT
* \author Jan Boon (Kaetemi)
* CGPUProgramParams
*/
/*
* Copyright (C) 2013 by authors
*
* This file is part of NL3D.
* NL3D is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* NL3D 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 Affero General
* Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with NL3D. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef NL3D_GPU_PROGRAM_PARAMS_H
#define NL3D_GPU_PROGRAM_PARAMS_H
#include <nel/misc/types_nl.h>
// STL includes
#include <map>
#include <vector>
// NeL includes
// Project includes
namespace NL3D {
/**
* \brief CGPUProgramParams
* \date 2013-09-07 22:17GMT
* \author Jan Boon (Kaetemi)
* A storage for user-provided parameters for GPU programs.
* Allows for fast updating and iteration of parameters.
* NOTE TO DRIVER IMPLEMENTORS: DO NOT USE FOR STORING COPIES
* OF HARDCODED MATERIAL PARAMETERS OR DRIVER PARAMETERS!!!
*/
class CGPUProgramParams
{
public:
enum TType { Float, Int };
struct CMeta { uint Index, Count; TType Type; size_t Next, Prev; };
private:
union CVec { float F[4]; sint32 I[4]; };
public:
CGPUProgramParams();
virtual ~CGPUProgramParams();
void set(uint index, float f0, float f1, float f2, float f3);
void set(uint index, int i0, int i1, int i2, int i3);
// Internal
/// Allocate specified number of components if necessary
size_t allocOffset(uint index, uint count, TType type);
/// Return offset for specified index
size_t getOffset(uint index) const;
/// Remove by offset
void freeOffset(size_t offset);
// Iteration
size_t getBegin() const { return m_Meta.size() ? m_First : s_End; }
size_t getNext(size_t offset) const { return m_Meta[offset].Next; }
size_t getEnd() const { return s_End; }
// Data access
uint getCountByOffset(size_t offset) { return m_Meta[offset].Count; }
float *getPtrFByOffset(size_t offset) { return m_Vec[offset].F; }
int *getPtrIByOffset(size_t offset) { return m_Vec[offset].I; }
TType getTypeByOffset(size_t offset) { return m_Meta[offset].Type; }
private:
std::vector<CVec> m_Vec;
std::vector<CMeta> m_Meta;
std::vector<size_t> m_Map; // map from index to buffer index
size_t m_First;
size_t m_Last;
static const size_t s_End = -1;
}; /* class CGPUProgramParams */
} /* namespace NL3D */
#endif /* #ifndef NL3D_GPU_PROGRAM_PARAMS_H */
/* end of file */

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@ -170,7 +170,9 @@ SOURCE_GROUP(Driver FILES
gpu_program.cpp gpu_program.cpp
../../include/nel/3d/gpu_program.h ../../include/nel/3d/gpu_program.h
gpu_program_source.cpp gpu_program_source.cpp
../../include/nel/3d/gpu_program_source.h) ../../include/nel/3d/gpu_program_source.h
gpu_program_params.cpp
../../include/nel/3d/gpu_program_params.h)
SOURCE_GROUP(Font FILES SOURCE_GROUP(Font FILES
computed_string.cpp computed_string.cpp

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/**
* \file gpu_program_params.cpp
* \brief CGPUProgramParams
* \date 2013-09-07 22:17GMT
* \author Jan Boon (Kaetemi)
* CGPUProgramParams
*/
/*
* Copyright (C) 2013 by authors
*
* This file is part of NL3D.
* NL3D is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* NL3D 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 Affero General
* Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with NL3D. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <nel/misc/types_nl.h>
#include <nel/3d/gpu_program_params.h>
// STL includes
// NeL includes
// #include <nel/misc/debug.h>
// Project includes
using namespace std;
// using namespace NLMISC;
namespace NL3D {
CGPUProgramParams::CGPUProgramParams() : m_First(s_End), m_Last(s_End)
{
}
CGPUProgramParams::~CGPUProgramParams()
{
}
void CGPUProgramParams::set(uint index, float f0, float f1, float f2, float f3)
{
float *f = getPtrFByOffset(allocOffset(index, 4, Float));
f[0] = f0;
f[1] = f1;
f[2] = f2;
f[3] = f3;
}
void CGPUProgramParams::set(uint index, int i0, int i1, int i2, int i3)
{
int *i = getPtrIByOffset(allocOffset(index, 4, Int));
i[0] = i0;
i[1] = i1;
i[2] = i2;
i[3] = i3;
}
/// Allocate specified number of components if necessary
size_t CGPUProgramParams::allocOffset(uint index, uint count, TType type)
{
nlassert(count > 0); // this code will not properly handle 0
nlassert(index < 0xFFFF); // sanity check
size_t offset = getOffset(index);
if (offset != s_End)
{
if (getCountByOffset(offset) == count)
{
m_Meta[offset].Type = type;
return offset;
}
if (getCountByOffset(offset) > count)
{
m_Meta[offset].Type = type;
m_Meta[offset].Count = count; // reduce count
return offset;
}
if (getCountByOffset(offset) < count)
{
freeOffset(offset);
}
}
// Allocate space
offset = m_Meta.size();
uint blocks = (count + 3) >> 2; // per 4 components
m_Meta.resize(offset + blocks);
m_Vec.resize(offset + blocks);
// Store offset in map
if (index >= m_Map.size())
m_Map.resize(index + 1, s_End);
m_Map[index] = offset;
// Fill
m_Meta[offset].Index = index;
m_Meta[offset].Count = count;
m_Meta[offset].Type = type;
m_Meta[offset].Prev = m_Last;
m_Meta[offset].Next = s_End;
// Link
if (m_Last == s_End)
{
m_First = m_Last = offset;
}
else
{
nlassert(m_Meta[m_Last].Next == s_End); // code error otherwise
m_Meta[m_Last].Next = offset;
m_Last = offset;
}
return offset;
}
/// Return offset for specified index
size_t CGPUProgramParams::getOffset(uint index) const
{
if (index >= m_Map.size())
return s_End;
return m_Map[index];
}
/// Remove by offset
void CGPUProgramParams::freeOffset(size_t offset)
{
if (offset == m_Last)
{
nlassert(m_Meta[offset].Next == s_End);
m_Last = m_Meta[offset].Prev;
}
else
{
nlassert(m_Meta[offset].Next != s_End);
m_Meta[m_Meta[offset].Next].Prev = m_Meta[offset].Prev;
}
if (offset == m_First)
{
nlassert(m_Meta[offset].Prev == s_End);
m_First = m_Meta[offset].Next;
}
else
{
nlassert(m_Meta[offset].Prev != s_End);
m_Meta[m_Meta[offset].Prev].Next = m_Meta[offset].Next;
}
}
} /* namespace NL3D */
/* end of file */