From: Michel Dänzer <michel@tungstengraphics.com>
Date: Wed, 28 Feb 2007 16:42:54 +0000 (+0100)
Subject: i915tex: Check that intel_rb is valid before trying to add it to an fbo.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3c578455e103664e6f93a7792999da7c06dd9a3f;p=mesa.git

i915tex: Check that intel_rb is valid before trying to add it to an fbo.
---

diff --git a/src/mesa/drivers/dri/i915tex/intel_fbo.c b/src/mesa/drivers/dri/i915tex/intel_fbo.c
index ad078451bf2..8d430553822 100644
--- a/src/mesa/drivers/dri/i915tex/intel_fbo.c
+++ b/src/mesa/drivers/dri/i915tex/intel_fbo.c
@@ -81,14 +81,16 @@ intel_flip_renderbuffers(struct intel_framebuffer *intel_fb)
    int current_page = intel_fb->pf_current_page;
    int next_page = (current_page + 1) % intel_fb->pf_num_pages;
 
-   if (intel_fb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer !=
+   if (intel_fb->color_rb[current_page] &&
+       intel_fb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer !=
        &intel_fb->color_rb[current_page]->Base) {
       _mesa_remove_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT);
       _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 			     &intel_fb->color_rb[current_page]->Base);
    }
 
-   if (intel_fb->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer !=
+   if (intel_fb->color_rb[next_page] &&
+       intel_fb->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer !=
        &intel_fb->color_rb[next_page]->Base) {
       _mesa_remove_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT);
       _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,