OpenGL ES: Fix GLSL version number for 1.00 (#5582)

gohai · gohai · commit 2e08fae6955d · 2018-07-20T11:41:47.000-07:00
Wikipedia had it wrong: the spec for the OpenGL ES Shading Language Version 1.00 defines the version preprocessor directive as "#version 100", and _not_ "#version 100 es", like version 3.00+ of the language wants it. This made the Raspberry Pi with the legacy driver unhappy. Thanks @DangusTaargus for reporting. see https://www.khronos.org/files/opengles_shading_language.pdf
diff --git a/core/src/processing/opengl/PJOGL.java b/core/src/processing/opengl/PJOGL.java
@@ -513,7 +513,8 @@ protected int getGLSLVersion() {
 
   @Override
   protected String getGLSLVersionSuffix() {
-    if (context.isGLESProfile()) {
+    VersionNumber vn = context.getGLSLVersionNumber();
+    if (context.isGLESProfile() && 1 < vn.getMajor()) {
       return " es";
     } else {
       return "";
