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recontruct normal more correctly...

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castano
2007-10-30 09:30:37 +00:00
parent 8847151022
commit 7fcda1fb41
1 changed files with 2 additions and 1 deletions
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3
src/nvimage/DirectDrawSurface.cpp
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@ -836,7 +836,8 @@ static Color32 buildNormal(uint8 x, uint8 y)
{ {
float nx = 2 * (x / 255.0f) - 1; float nx = 2 * (x / 255.0f) - 1;
float ny = 2 * (y / 255.0f) - 1; float ny = 2 * (y / 255.0f) - 1;
float nz = sqrtf(1 - nx*nx - ny*ny); float nz = 0.0f;
if (1 - nx*nx - ny*ny > 0) nz = sqrtf(1 - nx*nx - ny*ny);
uint8 z = clamp(int(255.0f * (nz + 1) / 2.0f), 0, 255); uint8 z = clamp(int(255.0f * (nz + 1) / 2.0f), 0, 255);
return Color32(x, y, z); return Color32(x, y, z);