diff options
Diffstat (limited to 'js/shader.js')
| -rw-r--r-- | js/shader.js | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/js/shader.js b/js/shader.js index 4a6e950..7773b89 100644 --- a/js/shader.js +++ b/js/shader.js @@ -1,3 +1,5 @@ +function shader (x,y,t,d) {} + var shader_build = function(){ var fn_str = document.getElementById('shader').value if (!fn_str.length) fn_str = "" @@ -46,7 +48,7 @@ var firefox_stack_regexp = /:([0-9]+)$/; function shade_error_handling(frame, t){ if (! t || isNaN(t)) throw Error ("No time specified") - if (! frame) throw Error ("No frame specified") + if (! frame || ! frame.ctx || ! frame.cloneData) throw Error ("No frame specified") var imgData = frame.ctx.getImageData(0,0,w,h) var data = imgData.data @@ -77,7 +79,7 @@ function shade_error_handling(frame, t){ } else if (lines.length > 1) { // attempt chrome match var matches = lines[1].match(chrome_stack_regexp) - if (matches.length > 1) + if (matches && matches.length > 1) error_highlight.on(parseInt(matches[1]) - 3) } |