From 698ad50c2a740a7fcaf95d957af5d4ea158459d4 Mon Sep 17 00:00:00 2001
From: omigamedev <omarator@gmail.com>
Date: Tue, 5 Nov 2019 19:17:53 +0100
Subject: [PATCH] replace with ES compatible glMapBufferRange

---
 src/rtt.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rtt.cpp b/src/rtt.cpp
index 4c1d1ba..6aec616 100644
--- a/src/rtt.cpp
+++ b/src/rtt.cpp
@@ -508,7 +508,7 @@ glm::uint8_t* PBO::map() noexcept
 {
     App::I->render_task([this] {
         glBindBuffer(GL_PIXEL_PACK_BUFFER, buffer_id);
-        mapped_ptr = (GLubyte*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
+        mapped_ptr = (GLubyte*)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, width * height * 4, GL_MAP_READ_BIT);
         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
     });
     return mapped_ptr;