From c374bc5b9f070e72e7e568c2822dcdf930d7e6b7 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Thu, 22 Nov 2001 06:34:25 +0000
Subject: [PATCH] Fixed testgl so that SDL_GL_Enter2DMode() allows alpha
 blending

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40244
---
 test/testgl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/testgl.c b/test/testgl.c
index 4dcb26f61..d046e22c8 100644
--- a/test/testgl.c
+++ b/test/testgl.c
@@ -118,6 +118,10 @@ void SDL_GL_Enter2DMode()
 	glDisable(GL_CULL_FACE);
 	glEnable(GL_TEXTURE_2D);
 
+	/* This allows alpha blending of 2D textures with the scene */
+	glEnable(GL_BLEND);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
 	glViewport(0, 0, screen->w, screen->h);
 
 	glMatrixMode(GL_PROJECTION);