Ryujinx/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl

26 lines
657 B
Plaintext
Raw Normal View History

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, 0.0 - 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);
}