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ryujinx-final/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl

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ivec2 Helper_TexelFetchScale(ivec2 inputVec, int samplerIndex)
{
float scale = s_render_scale[1 + samplerIndex];
if (scale == 1.0)
{
return inputVec;
}
if (scale < 0.0) // If less than 0, try interpolate between texels by using the screen position.
{
return ivec2(vec2(inputVec) * (-scale) + mod(gl_FragCoord.xy, -scale));
}
else
{
return ivec2(vec2(inputVec) * scale);
}
}
int Helper_TextureSizeUnscale(int size, int samplerIndex)
{
float scale = abs(s_render_scale[1 + samplerIndex]);
if (scale == 1.0)
{
return size;
}
return int(float(size) / scale);
}