From c0120cd58608da068d1218796a02f2f3468608b0 Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Thu, 4 Jul 2019 13:44:23 -0700
Subject: [PATCH] OpenGL: Fix 1.x interframe blending

---
 src/platform/opengl/gl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/platform/opengl/gl.c b/src/platform/opengl/gl.c
index bb7afbc6f..8ac36ae91 100644
--- a/src/platform/opengl/gl.c
+++ b/src/platform/opengl/gl.c
@@ -117,7 +117,6 @@ void mGLContextDrawFrame(struct VideoBackend* v) {
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 	if (v->interframeBlending) {
-		glEnable(GL_BLEND);
 		glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA);
 		glBlendColor(1, 1, 1, 0.5);
 		glBindTexture(GL_TEXTURE_2D, context->tex[context->activeTex ^ 1]);
@@ -129,6 +128,7 @@ void mGLContextDrawFrame(struct VideoBackend* v) {
 			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		}
 		glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+		glEnable(GL_BLEND);
 	}
 	glBindTexture(GL_TEXTURE_2D, context->tex[context->activeTex]);
 	if (v->filter) {