2 files changed, 21 insertions, 1 deletions
diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl
index 5def1390..6c670f91 100644
--- a/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_fp.glsl
@@ -7,7 +7,7 @@
     }
     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));
+        return ivec2(vec2(inputVec) * (-scale) + mod(gl_FragCoord.xy, 0.0 - scale));
     }
     else
     {
diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_vp.glsl b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_vp.glsl
new file mode 100644
index 00000000..19eb119d
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_vp.glsl
@@ -0,0 +1,20 @@
+ivec2 Helper_TexelFetchScale(ivec2 inputVec, int samplerIndex)
+{
+    float scale = abs(s_render_scale[1 + samplerIndex + s_frag_scale_count]);
+    if (scale == 1.0)
+    {
+        return inputVec;
+    }
+
+    return ivec2(vec2(inputVec) * scale);
+}
+
+int Helper_TextureSizeUnscale(int size, int samplerIndex)
+{
+    float scale = abs(s_render_scale[1 + samplerIndex + s_frag_scale_count]);
+    if (scale == 1.0)
+    {
+        return size;
+    }
+    return int(float(size) / scale);
+}
+\ No newline at end of file