From 33257803d9083643ea9709c127933d5a2c4f1960 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Mon, 16 Jan 2012 10:54:53 -0700 Subject: [PATCH] swrast: new assertions in _swrast_pixel_address() --- src/mesa/swrast/s_context.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h index 3391600..36ab86a 100644 --- a/src/mesa/swrast/s_context.h +++ b/src/mesa/swrast/s_context.h @@ -430,6 +430,14 @@ _swrast_pixel_address(struct gl_renderbuffer *rb, GLint x, GLint y) { const GLint bpp = _mesa_get_format_bytes(rb->Format); const GLint rowStride = rb->RowStride * bpp; + assert(x >= 0); + assert(y >= 0); + /* NOTE: using <= only because of s_tritemp.h which gets a pixel + * address but doesn't necessarily access it. + */ + assert(x <= (GLint) rb->Width); + assert(y <= (GLint) rb->Height); + assert(rb->Data); return (GLubyte *) rb->Data + y * rowStride + x * bpp; } -- 2.7.4