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This commit is contained in:
Camilla Berglund 2012-09-12 21:34:23 +02:00
parent 1d6d6bc3c6
commit 18392837ac
1 changed files with 6 additions and 9 deletions
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15
src/gamma.c
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@ -61,18 +61,15 @@ GLFWAPI void glfwSetGamma(float gamma)
for (i = 0; i < size; i++) for (i = 0; i < size; i++)
{ {
float value = (float) i / ((float) (size - 1)); float value;
// Apply gamma // Calculate intensity
value = (float) i / (float) (size - 1);
// Apply gamma curve
value = (float) pow(value, 1.f / gamma) * 65535.f + 0.5f; value = (float) pow(value, 1.f / gamma) * 65535.f + 0.5f;
// Clamp to value range
value = (float) fmax(fmin(value, 65535.f), 0.f);
// Clamp values
if (value < 0.f)
value = 0.f;
else if (value > 65535.f)
value = 65535.f;
// Set the gamma ramp values
ramp.red[i] = (unsigned short) value; ramp.red[i] = (unsigned short) value;
ramp.green[i] = (unsigned short) value; ramp.green[i] = (unsigned short) value;
ramp.blue[i] = (unsigned short) value; ramp.blue[i] = (unsigned short) value;