From e5070bc3ca75dee31034cc543f3d2ee04e5dc032 Mon Sep 17 00:00:00 2001 From: Brian Date: Fri, 16 Mar 2007 11:00:07 -0600 Subject: Assorted fixes for dealing with zero-size frame/renderbuffers. In xmesa_check_and_update_buffer_size() handle xmctx==NULL correctly: still call _mesa_resize_framebufer(). If we don't we can wind up in a situation where the framebuffer size is non-zero but an attached renderbuffer size is still initialized to zero. This inconsistancy can later cause problems. Check for zero-size renderbuffers in update_color_draw_buffers() and update_color_read_buffer(). See bug 7205. --- src/mesa/main/framebuffer.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'src/mesa/main/framebuffer.c') diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c index 3136a950e0..cd4f594aa2 100644 --- a/src/mesa/main/framebuffer.c +++ b/src/mesa/main/framebuffer.c @@ -647,7 +647,7 @@ update_color_draw_buffers(GLcontext *ctx, struct gl_framebuffer *fb) const GLuint bufferBit = 1 << i; if (bufferBit & bufferMask) { struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer; - if (rb) { + if (rb && rb->Width > 0 && rb->Height > 0) { fb->_ColorDrawBuffers[output][count] = rb; count++; } @@ -673,7 +673,10 @@ static void update_color_read_buffer(GLcontext *ctx, struct gl_framebuffer *fb) { (void) ctx; - if (fb->_ColorReadBufferIndex == -1 || fb->DeletePending) { + if (fb->_ColorReadBufferIndex == -1 || + fb->DeletePending || + fb->Width == 0 || + fb->Height == 0) { fb->_ColorReadBuffer = NULL; /* legal! */ } else { -- cgit v1.2.3