From d75963d2581f139de9a7fcbe95e3fb6a38231fe8 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 7 Mar 2006 02:57:04 +0000
Subject: [PATCH] disable double-buffer test in check_compatible(), fixes
 pbuffer/visual problem

---
 src/mesa/main/context.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 725386a3c27..05b8c57d11c 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1508,8 +1508,11 @@ check_compatible(const GLcontext *ctx, const GLframebuffer *buffer)
 
    if (ctxvis->rgbMode != bufvis->rgbMode)
       return GL_FALSE;
+#if 0
+   /* disabling this fixes the fgl_glxgears pbuffer demo */
    if (ctxvis->doubleBufferMode && !bufvis->doubleBufferMode)
       return GL_FALSE;
+#endif
    if (ctxvis->stereoMode && !bufvis->stereoMode)
       return GL_FALSE;
    if (ctxvis->haveAccumBuffer && !bufvis->haveAccumBuffer)
@@ -1575,12 +1578,18 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
    /* Check that the context's and framebuffer's visuals are compatible.
     */
    if (newCtx && drawBuffer && newCtx->DrawBuffer != drawBuffer) {
-      if (!check_compatible(newCtx, drawBuffer))
+      if (!check_compatible(newCtx, drawBuffer)) {
+         _mesa_warning(newCtx,
+              "MakeCurrent: incompatible visuals for context and drawbuffer");
          return;
+      }
    }
    if (newCtx && readBuffer && newCtx->ReadBuffer != readBuffer) {
-      if (!check_compatible(newCtx, readBuffer))
+      if (!check_compatible(newCtx, readBuffer)) {
+         _mesa_warning(newCtx,
+              "MakeCurrent: incompatible visuals for context and readbuffer");
          return;
+      }
    }
 
 #if !defined(IN_DRI_DRIVER)
-- 
2.30.2