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Fix abs() bug on GCC #28

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Fix abs() bug on GCC #28

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3 changes: 2 additions & 1 deletion src/ffx-fsr2-api/ffx_fsr2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -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"

Expand Down Expand Up @@ -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.
Expand Down