From a827734e033ccc9114c03d16813bd2e88186dcf1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C5=82a=C5=BCej=20Szczygie=C5=82?= <spaz16@wp.pl>
Date: Sun, 25 Sep 2016 13:09:21 +0200
Subject: [PATCH] Don't crash in "_process_hdr()" if "framebuffer.luminance" is
 empty

If "glFramebufferTexture2D()" fails on old drivers the Vector is empty.
Don't allow to read from empty Vector (NULL pointer).

(cherry picked from commit 7b8fe97888dc1d9586d443498281df532ec1db3a)
---
 drivers/gles2/rasterizer_gles2.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gles2/rasterizer_gles2.cpp b/drivers/gles2/rasterizer_gles2.cpp
index 37155619da..5c2171b4ec 100644
--- a/drivers/gles2/rasterizer_gles2.cpp
+++ b/drivers/gles2/rasterizer_gles2.cpp
@@ -7005,6 +7005,10 @@ void RasterizerGLES2::_process_glow_bloom() {
 
 void RasterizerGLES2::_process_hdr() {
 
+	if (framebuffer.luminance.empty()) {
+		return;
+	}
+
 	glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.luminance[0].fbo);
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_2D, framebuffer.color );