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Fix abs bug.

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Was using integer abs instead of FP abs in Lanczos LUT ...
abs() was likely pulled in from MSVC macro version.
This broke on GCC which used stdlib abs, which is integer by default ...
This commit is contained in:
Hans-Kristian Arntzen 2022-07-01 20:12:02 +02:00
parent 2e6d42ad0a
commit 057c3d5c35
1 changed files with 2 additions and 1 deletions
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3
src/ffx-fsr2-api/ffx_fsr2.cpp
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@ -29,6 +29,7 @@
#include "shaders/ffx_fsr1.h"
#include "shaders/ffx_spd.h"
#include "shaders/ffx_fsr2_callbacks_hlsl.h"
#include <cmath>
#include "ffx_fsr2_maximum_bias.h"
@ -157,7 +158,7 @@ FfxConstantBuffer globalFsr2ConstantBuffers[3] = {
// Lanczos
static float lanczos2(float value)
{
return abs(value) < FFX_EPSILON ? 1.f : (sinf(FFX_PI * value) / (FFX_PI * value)) * (sinf(0.5f * FFX_PI * value) / (0.5f * FFX_PI * value));
return std::abs(value) < FFX_EPSILON ? 1.f : (sinf(FFX_PI * value) / (FFX_PI * value)) * (sinf(0.5f * FFX_PI * value) / (0.5f * FFX_PI * value));
}
// Calculate halton number for index and base.