From 1a03cd537ffdaf99ad8294f95322dffc43ef9de4 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Thu, 27 Jul 2017 16:43:21 +0300
Subject: [PATCH] Add missing max. number of samples (MSAA) check

---
 drivers/gles3/rasterizer_storage_gles3.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gles3/rasterizer_storage_gles3.cpp b/drivers/gles3/rasterizer_storage_gles3.cpp
index 2a9f078d8c3e..89bea1e8cce4 100644
--- a/drivers/gles3/rasterizer_storage_gles3.cpp
+++ b/drivers/gles3/rasterizer_storage_gles3.cpp
@@ -5999,6 +5999,13 @@ void RasterizerStorageGLES3::_render_target_allocate(RenderTarget *rt) {
 		static const int msaa_value[] = { 0, 2, 4, 8, 16 };
 		int msaa = msaa_value[rt->msaa];
 
+		int max_samples = 0;
+		glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
+		if (msaa > max_samples) {
+			WARN_PRINTS("MSAA must be <= GL_MAX_SAMPLES, falling-back to GL_MAX_SAMPLES = " + itos(max_samples));
+			msaa = max_samples;
+		}
+
 		//regular fbo
 		glGenFramebuffers(1, &rt->buffers.fbo);
 		glBindFramebuffer(GL_FRAMEBUFFER, rt->buffers.fbo);