From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Thu, 20 Mar 2014 23:01:48 +0000 (+0100)
Subject: Check for GLES in init_movit().
X-Git-Tag: 1.1~12^2~8
X-Git-Url: https://git.sesse.net/?p=movit;a=commitdiff_plain;h=70f86335e039280a182119c3055aabeae01713bc;hp=b554dd7bac7b37962d1ee15db4e0fb2e79fe8a57

Check for GLES in init_movit().

This sort of worked by accident already, since 30 was interpreted
as desktop OpenGL 3.0, but this is more proper.
---

diff --git a/init.cpp b/init.cpp
index c5e8113..f6f45a0 100644
--- a/init.cpp
+++ b/init.cpp
@@ -277,6 +277,21 @@ void measure_roundoff_problems()
 
 bool check_extensions()
 {
+	// GLES generally doesn't use extensions as actively as desktop OpenGL.
+	// For now, we say that for GLES, we require GLES 3, which has everything
+	// we need.
+	//
+	// Since we use implicit #version 100, we don't have round(). We will
+	// fix this at some later stage.
+	if (!epoxy_is_desktop_gl()) {
+		if (epoxy_gl_version() >= 30) {
+			movit_srgb_textures_supported = true;
+			movit_shader_rounding_supported = false;
+		} else {
+			return false;
+		}
+	}
+
 	// We fundamentally need FBOs and floating-point textures.
 	// FBOs are covered by OpenGL 1.5, and are not an extension there.
 	// Floating-point textures are part of OpenGL 3.0 and newer.