From db11611d7d8d997fa34c3903ed28402654d6654a Mon Sep 17 00:00:00 2001
From: Tom <tmpearce@gmail.com>
Date: Wed, 17 Jan 2024 16:13:34 -0500
Subject: [PATCH] add logging of gl max_texture_image_units errors to
 multi-image test

---
 src/webgldrawer.js          | 5 +++++
 test/modules/multi-image.js | 6 +++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/webgldrawer.js b/src/webgldrawer.js
index 8fbd3bed..cf051ad3 100644
--- a/src/webgldrawer.js
+++ b/src/webgldrawer.js
@@ -89,6 +89,10 @@
            this._setupRenderer();
 
            this.context = this._outputContext; // API required by tests
+
+            // for use with qunit tests
+            this._numGlMaxTextureErrors = 0;
+
        }
 
         // Public API required by all Drawer implementations
@@ -274,6 +278,7 @@
 
                 let maxTextures = this._gl.getParameter(this._gl.MAX_TEXTURE_IMAGE_UNITS);
                 if(maxTextures <= 0){
+                    this._numGlMaxTextureErrors += 1;
                     $.console.error(`There was a WebGL problem: bad value for MAX_TEXTURE_IMAGE_UNITS (${maxTextures})`);
                     return;
                 }
diff --git a/test/modules/multi-image.js b/test/modules/multi-image.js
index 7edf894f..25fa5528 100644
--- a/test/modules/multi-image.js
+++ b/test/modules/multi-image.js
@@ -7,7 +7,7 @@
 
     function runDrawerTests(drawerType){
 
-        QUnit.module( 'Multi-Image-'+drawerType, {
+        QUnit.module.only( 'Multi-Image-'+drawerType, {
             beforeEach: function() {
                 $( '<div id="example"></div>' ).appendTo( "#qunit-fixture" );
 
@@ -22,6 +22,10 @@
             },
             afterEach: function() {
                 if (viewer){
+                    let errors = viewer.drawer._numGlMaxTextureErrors;
+                    if(errors > 0){
+                        console.log('Number of times MAX_TEXTURE_IMAGE_UNITS had a bad value:', errors);
+                    }
                     viewer.destroy();
                 }