drewcassidy/nvidia-texture-tools
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seamless cubemap filtering.

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This commit is contained in:
castano
2011-10-11 06:40:40 +00:00
parent 2ec37026be
commit d11d7a5f38
12 changed files with 981 additions and 385 deletions
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42
src/nvtt/CubeSurface.h
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@ -38,21 +38,15 @@
namespace nvtt
{
struct SolidAngleTable {
SolidAngleTable(uint edgeLength);
float lookup(uint x, uint y) const;
struct TexelTable {
TexelTable(uint edgeLength, bool seamless);
float solidAngle(uint f, uint x, uint y) const;
const nv::Vector3 & direction(uint f, uint x, uint y) const;
uint size;
nv::Array<float> data;
};
struct VectorTable {
VectorTable(uint edgeLength);
const nv::Vector3 & lookup(uint f, uint x, uint y) const;
uint size;
nv::Array<nv::Vector3> data;
nv::Array<float> solidAngleArray;
nv::Array<nv::Vector3> directionArray;
};
@ -65,24 +59,23 @@ namespace nvtt
nvDebugCheck( refCount() == 0 );
edgeLength = 0;
solidAngleTable = NULL;
vectorTable = NULL;
seamless = false;
texelTable = NULL;
}
Private(const Private & p) : RefCounted() // Copy ctor. inits refcount to 0.
{
nvDebugCheck( refCount() == 0 );
edgeLength = p.edgeLength;
seamless = p.seamless;
for (uint i = 0; i < 6; i++) {
face[i] = p.face[i];
}
solidAngleTable = NULL; // @@ Transfer tables. Needs refcounting?
vectorTable = NULL;
texelTable = NULL; // @@ Transfer tables. Needs refcounting?
}
~Private()
{
delete solidAngleTable;
delete vectorTable;
delete texelTable;
}
void allocate(uint edgeLength)
@ -95,13 +88,20 @@ namespace nvtt
}
}
void allocateTexelTable()
{
if (texelTable == NULL) {
texelTable = new TexelTable(edgeLength, seamless);
}
}
// Filtering helpers:
nv::Vector3 applyCosinePowerFilter(const nv::Vector3 & dir, float coneAngle, float cosinePower);
uint edgeLength;
bool seamless;
Surface face[6];
SolidAngleTable * solidAngleTable;
VectorTable * vectorTable;
TexelTable * texelTable;
};
} // nvtt namespace