drewcassidy/nvidia-texture-tools
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Fix loading of dds normal maps.

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Fix computation of angular deviation.
This commit is contained in:
castano
2007-10-15 10:36:49 +00:00
parent fbfc9c2bc1
commit 6cee7e2892
2 changed files with 17 additions and 11 deletions
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6
src/nvimage/DirectDrawSurface.cpp
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@ -834,10 +834,10 @@ void DirectDrawSurface::readBlockImage(Image * img)
static Color32 buildNormal(uint8 x, uint8 y)
{
float nx = 2 * (x / 255) - 1;
float ny = 2 * (x / 255) - 1;
float nx = 2 * (x / 255.0f) - 1;
float ny = 2 * (x / 255.0f) - 1;
float nz = sqrtf(1 - nx*nx - ny*ny);
uint8 z = clamp(int(255 * (nz + 1) / 2), 0, 255);
uint8 z = clamp(int(255.0f * (nz + 1) / 2.0f), 0, 255);
return Color32(x, y, z);
}