From 49e97857c7f3bc4b8563ce5118a9384024f0fc56 Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Thu, 10 Aug 2017 08:36:33 -0400
Subject: enable gl blending

This makes transparency work correctly.

fixes #56
---
 render/gles2/renderer.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'render/gles2')

diff --git a/render/gles2/renderer.c b/render/gles2/renderer.c
index 7d0db8b3..703edd46 100644
--- a/render/gles2/renderer.c
+++ b/render/gles2/renderer.c
@@ -83,6 +83,11 @@ static void wlr_gles2_begin(struct wlr_renderer_state *state,
 	int32_t width = output->width;
 	int32_t height = output->height;
 	GL_CALL(glViewport(0, 0, width, height));
+
+	// enable transparency
+	GL_CALL(glEnable(GL_BLEND));
+	GL_CALL(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
+
 	// Note: maybe we should save output projection and remove some of the need
 	// for users to sling matricies themselves
 }
-- 
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