From f9f98f9f2e44ce596f38308745e323fb85063080 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
Date: Sat, 18 Jul 2015 14:19:31 -0300
Subject: [PATCH] (gl_raster_font) Enable GL_R8 atlas for GL >= 3

---
 gfx/drivers_font/gl_raster_font.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/gfx/drivers_font/gl_raster_font.c b/gfx/drivers_font/gl_raster_font.c
index 0a65530f7b..39d6926449 100644
--- a/gfx/drivers_font/gl_raster_font.c
+++ b/gfx/drivers_font/gl_raster_font.c
@@ -60,7 +60,12 @@ static bool gl_raster_font_upload_atlas(gl_raster_t *font,
    uint8_t       *tmp = NULL;
 
 #ifndef HAVE_OPENGLES
-   if (font->gl->core_context)
+   struct retro_hw_render_callback *cb = video_driver_callback();
+   bool modern = font->gl->core_context ||
+         (cb->context_type == RETRO_HW_CONTEXT_OPENGL &&
+          cb->version_major >= 3);
+
+   if (modern)
    {
       GLint swizzle[] = { GL_ONE, GL_ONE, GL_ONE, GL_RED };
       glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzle);