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Small tweaks.

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This commit is contained in:
siavash 2013-07-04 23:42:18 +04:30
parent dcb4d8ee32
commit b2fa10ae5b
1 changed files with 7 additions and 7 deletions
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14
src/gamma.c
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@ -81,18 +81,18 @@ GLFWAPI void glfwSetGamma(GLFWmonitor* handle, float gamma)
for (i = 0; i < 256; i++)
{
float value;
float inv255, value;
// Calculate intensity
value = i / 255.f;
inv255 = 1.f / 255.f;
value = i * inv255;
// Apply gamma curve
value = (float) pow(value, 1.f / gamma) * 65535.f + 0.5f;
value = powf(value, 1.f / gamma) * 65535.f + 0.5f;
// Clamp to value range
if (value < 0.f)
value = 0.f;
else if (value > 65535.f)
value = 65535.f;
// There isn't any need to check for values smaller than zero.
// It is always positive and bigger than 0.5f.
value = value < 65535.f ? value : 65535.f;
values[i] = (unsigned short) value;
}