diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/script/dom/webglrenderingcontext.rs | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/components/script/dom/webglrenderingcontext.rs b/components/script/dom/webglrenderingcontext.rs index 6529e94de6b..ce09fda8943 100644 --- a/components/script/dom/webglrenderingcontext.rs +++ b/components/script/dom/webglrenderingcontext.rs @@ -2183,19 +2183,21 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext { return self.webgl_error(InvalidOperation); } - if let Some(array_buffer) = self.bound_buffer_element_array.get() { - // WebGL Spec: check buffer overflows, must be a valid multiple of the size. - let val = offset as u64 + (count as u64 * type_size as u64); - if val > array_buffer.capacity() as u64 { + if count > 0 { + if let Some(array_buffer) = self.bound_buffer_element_array.get() { + // WebGL Spec: check buffer overflows, must be a valid multiple of the size. + let val = offset as u64 + (count as u64 * type_size as u64); + if val > array_buffer.capacity() as u64 { + return self.webgl_error(InvalidOperation); + } + } else { + // From the WebGL spec + // + // a non-null WebGLBuffer must be bound to the ELEMENT_ARRAY_BUFFER binding point + // or an INVALID_OPERATION error will be generated. + // return self.webgl_error(InvalidOperation); } - } else { - // From the WebGL spec - // - // a non-null WebGLBuffer must be bound to the ELEMENT_ARRAY_BUFFER binding point - // or an INVALID_OPERATION error will be generated. - // - return self.webgl_error(InvalidOperation); } if !self.validate_framebuffer_complete() { |