index_t needs to be same size as GL_UNSIGNED_INT

src/core/include/pw/core/mesh.hpp

@@ -43,7 +43,7 @@ public:
         points
     };
 
-    using index_t = size_t;
+    using index_t = uint32_t;
 
 	using valuearray_t = std::vector<real_t> ;
 	using indexarray_t = std::vector<index_t> ;

src/visual/src/pipeline.cpp

@@ -54,7 +54,7 @@ struct triangle_renderer
 		const float s = 1.0f;
 
 
-#if 1
+#if 0
         geometry::vertex3array_t vertices = {
 			{ 0.0f,  0.5f,  z_val} // 0
 			,{ 0.5f,  0.0f,  z_val} // 1