From cde17e97101c93ffad7d9e6797fe386e656a7721 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Wed, 18 Dec 2019 15:28:19 +0000
Subject: [PATCH] Set NEAREST sampling for textures in GL texture zoo

* This is needed particularly for integer textures which are incomplete if
  sampled (even with a non-sampling instruction) with the default LINEAR
  filtering.
---
 util/test/demos/gl/gl_texture_zoo.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/util/test/demos/gl/gl_texture_zoo.cpp b/util/test/demos/gl/gl_texture_zoo.cpp
index 2156f5bb8..0398ca153 100644
--- a/util/test/demos/gl/gl_texture_zoo.cpp
+++ b/util/test/demos/gl/gl_texture_zoo.cpp
@@ -374,6 +374,15 @@ void main()
     test.tex = MakeTexture();
     glBindTexture(test.target, test.tex);
 
+    // MSAA textures don't have sampler state at all
+    if(!test.isMSAA)
+    {
+      // rectangle textures can't have mipmap minification
+      glTexParameteri(test.target, GL_TEXTURE_MIN_FILTER,
+                      test.isRect ? GL_NEAREST : GL_NEAREST_MIPMAP_NEAREST);
+      glTexParameteri(test.target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    }
+
     if(test.dim == 1)
     {
       if(test.isArray)