drewcassidy/nvidia-texture-tools
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Minor optimizations.

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Fix DXT1a support.
This commit is contained in:
castano
2008-02-04 10:01:43 +00:00
parent 42da2d63ce
commit 7b433f08f3
6 changed files with 56 additions and 29 deletions
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26
src/nvtt/squish/fastclusterfit.cpp
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@ -104,8 +104,8 @@ struct Precomp {
float factor;
};
static Precomp s_threeElement[153];
static Precomp s_fourElement[969];
static SQUISH_ALIGN_16 Precomp s_threeElement[153];
static SQUISH_ALIGN_16 Precomp s_fourElement[969];
void FastClusterFit::DoPrecomputation()
{
@ -229,11 +229,12 @@ void FastClusterFit::Compress3( void* block )
x1 = zero;
for( int c1 = 0; c1 <= 16-c0; c1++)
{
Vec4 const alpha2_sum = VEC4_CONST(s_threeElement[i].alpha2_sum);
Vec4 const beta2_sum = VEC4_CONST(s_threeElement[i].beta2_sum);
Vec4 const alphabeta_sum = VEC4_CONST(s_threeElement[i].alphabeta_sum);
Vec4 const factor = VEC4_CONST(s_threeElement[i].factor);
{
Vec4 const constants = Vec4((const float *)&s_threeElement[i]);
Vec4 const alpha2_sum = constants.SplatX();
Vec4 const beta2_sum = constants.SplatY();
Vec4 const alphabeta_sum = constants.SplatZ();
Vec4 const factor = constants.SplatW();
i++;
Vec4 const alphax_sum = MultiplyAdd(half, x1, x0);
@ -310,6 +311,8 @@ void FastClusterFit::Compress3( void* block )
for( int i = 0; i < 16; ++i )
ordered[m_order[i]] = bestindices[i];
m_colours->RemapIndices( ordered, bestindices ); // Set alpha indices.
// save the block
WriteColourBlock3( beststart.GetVec3(), bestend.GetVec3(), ordered, block );
@ -347,10 +350,11 @@ void FastClusterFit::Compress4( void* block )
for( int c2 = 0; c2 <= 16-c0-c1; c2++)
{
Vec4 const alpha2_sum = VEC4_CONST(s_fourElement[i].alpha2_sum);
Vec4 const beta2_sum = VEC4_CONST(s_fourElement[i].beta2_sum);
Vec4 const alphabeta_sum = VEC4_CONST(s_fourElement[i].alphabeta_sum);
Vec4 const factor = VEC4_CONST(s_fourElement[i].factor);
Vec4 const constants = Vec4((const float *)&s_fourElement[i]);
Vec4 const alpha2_sum = constants.SplatX();
Vec4 const beta2_sum = constants.SplatY();
Vec4 const alphabeta_sum = constants.SplatZ();
Vec4 const factor = constants.SplatW();
i++;
Vec4 const alphax_sum = x0 + MultiplyAdd(x1, twothirds, x2 * onethird);