From 7f9c17aaa82f5a8a1d5f077eba4d5889d3c3b298 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Tue, 7 Jun 2011 12:27:04 -0700 Subject: mesa: Don't try to clear a NULL renderbuffer In an ES2 context (or if GL_ARB_ES2_compatibility) is supported, the framebuffer can be complete with some attachments be missing. In this case the _ColorDrawBuffers pointer will be NULL. Fixes the crash in piglit test fbo-missing-attachment-clear. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=37739 Reviewed-by: Brian Paul Reviewed-by: Eric Anholt NOTE: This is a candidate for the stable branches. --- src/mesa/swrast/s_clear.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/mesa') diff --git a/src/mesa/swrast/s_clear.c b/src/mesa/swrast/s_clear.c index 75805f9605d..9e9b5311684 100644 --- a/src/mesa/swrast/s_clear.c +++ b/src/mesa/swrast/s_clear.c @@ -165,6 +165,14 @@ clear_color_buffers(struct gl_context *ctx) for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf]; + + /* If this is an ES2 context or GL_ARB_ES2_compatibility is supported, + * the framebuffer can be complete with some attachments be missing. In + * this case the _ColorDrawBuffers pointer will be NULL. + */ + if (rb == NULL) + continue; + if (ctx->Color.ColorMask[buf][0] == 0 || ctx->Color.ColorMask[buf][1] == 0 || ctx->Color.ColorMask[buf][2] == 0 || -- cgit v1.2.3