From 98eef52c41bba9a4c521acd76596ab3cedcf9003 Mon Sep 17 00:00:00 2001
From: Elias Naur <elias.naur@gmail.com>
Date: Mon, 26 Jul 2004 14:42:13 +0000
Subject: [PATCH] Linux part of letting Pbuffer fallback to double buffered
 formats

---
 src/native/linux/org_lwjgl_opengl_Pbuffer.cpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/native/linux/org_lwjgl_opengl_Pbuffer.cpp b/src/native/linux/org_lwjgl_opengl_Pbuffer.cpp
index f36d2965..051e9dc5 100644
--- a/src/native/linux/org_lwjgl_opengl_Pbuffer.cpp
+++ b/src/native/linux/org_lwjgl_opengl_Pbuffer.cpp
@@ -101,8 +101,11 @@ static bool checkPbufferCaps(JNIEnv *env, GLXFBConfig config, int width, int hei
 static bool createPbufferUsingUniqueContext(JNIEnv *env, PbufferInfo *pbuffer_info, jobject pixel_format, int width, int height, const int *buffer_attribs) {
 	GLXFBConfig *configs = chooseVisualGLX13(env, pixel_format, false, GLX_PBUFFER_BIT, false);
 	if (configs == NULL) {
-		throwException(env, "No matching pixel format");
-		return false;
+		GLXFBConfig *configs = chooseVisualGLX13(env, pixel_format, false, GLX_PBUFFER_BIT, true);
+		if (configs == NULL) {
+			throwException(env, "No matching pixel format");
+			return false;
+		}
 	}
 	if (!checkPbufferCaps(env, configs[0], width, height)) {
 		XFree(configs);
@@ -186,10 +189,8 @@ static bool createPbufferUsingDisplayContext(JNIEnv *env, PbufferInfo *buffer_in
 		return false;
 	}
 	GLXFBConfig config = chooseSingleBufferedConfigFromConfig(getCurrentGLXFBConfig());
-	if (config == NULL) {
-		throwException(env, "Could not find a suitable GLXFBConfig");
-		return false;
-	}
+	if (config == NULL)
+		config = getCurrentGLXFBConfig();
 	GLXPbuffer buffer = glXCreatePbuffer(getDisplay(), config, buffer_attribs);
 	buffer_info->buffer = buffer;
 	buffer_info->context = getCurrentGLXContext();