- check for HTMLUnknownElement when checking if bound image is valid for texture creation

Author: JonnoRobson

scripts/Builders/yyVBufferBuilder.js

@@ -385,7 +385,7 @@ function yyVBufferBuilder(_size) {
                 // Check whether the webgl texture has been initialised yet and do so if not
                 if (_texture && !_texture.WebGLTexture.webgl_textureid) {
                     WebGL_BindTexture(_texture.TPE);
-                    if(_texture.WebGLTexture.webgl_textureid.Image == undefined || _texture.WebGLTexture.webgl_textureid.Image == null) {
+                    if(WebGL_IsTextureImageValid(_texture.WebGLTexture.webgl_textureid)) {
                         yyError("vertex_submit: trying to use an invalid texture");
 						return;
 					}
@@ -401,10 +401,11 @@ function yyVBufferBuilder(_size) {
                 // Check whether the webgl texture has been initialised yet and do so if not
                 if (_texture && !_texture.WebGLTexture.webgl_textureid) {
                     WebGL_BindTexture(_texture.TPE);
-                    if(_texture.WebGLTexture.webgl_textureid.Image == undefined|| _texture.WebGLTexture.webgl_textureid.Image == null) {
+                    if(WebGL_IsTextureImageValid(_texture.WebGLTexture.webgl_textureid)) {
                         yyError("vertex_submit: trying to use an invalid texture");
 						return;
 					}
+					
                 }
                 pBuff = g_webGL.AllocVerts(_primType, _texture.WebGLTexture.webgl_textureid, m_FVF, vertexCount);
             }

scripts/yyWebGL.js

@@ -5046,6 +5046,19 @@ function WebGL_IsTextureValid(_tex, _mipoptions)
     }
 }
 
+function WebGL_IsTextureImageValid(_tex)
+{
+	// check if bound image is a valid object that a texture can be created from	
+	if(_tex.Image == undefined
+		|| _tex.Image == null
+		|| typeof(_tex.Image) == "HTMLUnknownElement"
+	)
+	{
+		return false;
+	}
+	return true;
+}
+