diff options
Diffstat (limited to 'mesalib/src/mesa/main/dlist.c')
| -rw-r--r-- | mesalib/src/mesa/main/dlist.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/mesalib/src/mesa/main/dlist.c b/mesalib/src/mesa/main/dlist.c index 6e075b4e5..2b2ff9015 100644 --- a/mesalib/src/mesa/main/dlist.c +++ b/mesalib/src/mesa/main/dlist.c @@ -871,7 +871,11 @@ translate_id(GLsizei n, GLenum type, const GLvoid * list) /** * Wrapper for _mesa_unpack_image() that handles pixel buffer objects. - * If we run out of memory, GL_OUT_OF_MEMORY will be recorded. + * If width < 0 or height < 0 or format or type are invalid we'll just + * return NULL. We will not generate an error since OpenGL command + * arguments aren't error-checked until the command is actually executed + * (not when they're compiled). + * But if we run out of memory, GL_OUT_OF_MEMORY will be recorded. */ static GLvoid * unpack_image(struct gl_context *ctx, GLuint dimensions, @@ -879,6 +883,15 @@ unpack_image(struct gl_context *ctx, GLuint dimensions, GLenum format, GLenum type, const GLvoid * pixels, const struct gl_pixelstore_attrib *unpack) { + if (width <= 0 || height <= 0) { + return NULL; + } + + if (_mesa_bytes_per_pixel(format, type) <= 0) { + /* bad format and/or type */ + return NULL; + } + if (!_mesa_is_bufferobj(unpack->BufferObj)) { /* no PBO */ GLvoid *image = _mesa_unpack_image(dimensions, width, height, depth, |