drewcassidy/nvidia-texture-tools
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Fix z reconstruction.

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This commit is contained in:
castano 2007-10-15 10:50:29 +00:00
parent 6cee7e2892
commit fff7b3cf56
1 changed files with 2 additions and 2 deletions
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4
src/nvimage/DirectDrawSurface.cpp
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@ -835,7 +835,7 @@ void DirectDrawSurface::readBlockImage(Image * img)
static Color32 buildNormal(uint8 x, uint8 y)
{
float nx = 2 * (x / 255.0f) - 1;
float ny = 2 * (x / 255.0f) - 1;
float ny = 2 * (y / 255.0f) - 1;
float nz = sqrtf(1 - nx*nx - ny*ny);
uint8 z = clamp(int(255.0f * (nz + 1) / 2.0f), 0, 255);
@ -910,7 +910,7 @@ void DirectDrawSurface::readBlock(ColorBlock * rgba)
for (int i = 0; i < 16; i++)
{
Color32 & c = rgba->color(i);
c = buildNormal(c.g, c.a);
c = buildNormal(c.a, c.g);
}
}
}