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Ptex
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Pixel resolution of a given texture. More...
#include <Ptexture.h>
Public Member Functions | |
| Res () | |
| Default constructor, sets res to 0 (1x1 texel). More... | |
| Res (int8_t ulog2_, int8_t vlog2_) | |
| Constructor. More... | |
| Res (uint16_t value) | |
| Constructor. More... | |
| int | u () const |
| U resolution in texels. More... | |
| int | v () const |
| V resolution in texels. More... | |
| uint16_t | val () const |
| Resolution as a single 16-bit integer value. More... | |
| int | size () const |
| Total size of specified texture in texels (u * v). More... | |
| bool | operator== (const Res &r) const |
| Comparison operator. More... | |
| bool | operator!= (const Res &r) const |
| Comparison operator. More... | |
| bool | operator>= (const Res &r) const |
| True if res is >= given res in both u and v directions. More... | |
| Res | swappeduv () const |
| Get value of resolution with u and v swapped. More... | |
| void | swapuv () |
| Swap the u and v resolution values in place. More... | |
| void | clamp (const Res &r) |
| Clamp the resolution value against the given value. More... | |
| int | ntilesu (Res tileres) const |
| Determine the number of tiles in the u direction for the given tile res. More... | |
| int | ntilesv (Res tileres) const |
| Determine the number of tiles in the v direction for the given tile res. More... | |
| int | ntiles (Res tileres) const |
| Determine the total number of tiles for the given tile res. More... | |
Public Attributes | |
| int8_t | ulog2 |
| log base 2 of u resolution, in texels More... | |
| int8_t | vlog2 |
| log base 2 of v resolution, in texels More... | |
Pixel resolution of a given texture.
The resolution is stored in log form: ulog2 = log2(ures), vlog2 = log2(vres)). Note: negative ulog2 or vlog2 values are reserved for internal use.
Definition at line 159 of file Ptexture.h.
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Default constructor, sets res to 0 (1x1 texel).
Definition at line 164 of file Ptexture.h.
Referenced by swappeduv().
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Constructor.
Definition at line 167 of file Ptexture.h.
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Constructor.
Definition at line 170 of file Ptexture.h.
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Clamp the resolution value against the given value.
Definition at line 200 of file Ptexture.h.
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Determine the total number of tiles for the given tile res.
Definition at line 212 of file Ptexture.h.
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Determine the number of tiles in the u direction for the given tile res.
Definition at line 206 of file Ptexture.h.
References ulog2.
Referenced by ntiles().
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Determine the number of tiles in the v direction for the given tile res.
Definition at line 209 of file Ptexture.h.
References vlog2.
Referenced by ntiles().
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Comparison operator.
Definition at line 188 of file Ptexture.h.
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True if res is >= given res in both u and v directions.
Definition at line 191 of file Ptexture.h.
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Total size of specified texture in texels (u * v).
Definition at line 182 of file Ptexture.h.
Referenced by PtexMainWriter::finish(), and PtexWriterBase::writeReduction().
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Swap the u and v resolution values in place.
Definition at line 197 of file Ptexture.h.
References swappeduv().
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U resolution in texels.
Definition at line 173 of file Ptexture.h.
References ulog2.
Referenced by PtexSeparableFilter::apply(), PtexTriangleFilter::applyIter(), PtexPointFilter::eval(), PtexPointFilterTri::eval(), size(), and PtexWriterBase::writeReduction().
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V resolution in texels.
Definition at line 176 of file Ptexture.h.
References vlog2.
Referenced by PtexSeparableFilter::apply(), PtexTriangleFilter::applyIter(), and size().
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Resolution as a single 16-bit integer value.
Definition at line 179 of file Ptexture.h.
| int8_t Ptex::Res::ulog2 |
log base 2 of u resolution, in texels
Definition at line 160 of file Ptexture.h.
Referenced by clamp(), ntilesu(), operator==(), operator>=(), swappeduv(), u(), and val().
| int8_t Ptex::Res::vlog2 |
log base 2 of v resolution, in texels
Definition at line 161 of file Ptexture.h.
Referenced by clamp(), ntilesv(), operator==(), operator>=(), swappeduv(), v(), and val().