collada2gltf: Force GLSL version

Change-Id: Ia5e29cff04c3a38d992a78b956a93103ad1042a3

external/collada2gltf/UnpackedTarball_collada2gltf.mk

@@ -20,6 +20,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,collada2gltf,\
 	external/collada2gltf/patches/collada2gltf.fix-memory-leak2.patch.1 \
 	external/collada2gltf/patches/shader_compatibility.patch.1 \
 	external/collada2gltf/patches/drop_tr1_support.patch.1 \
+	external/collada2gltf/patches/collada2gltf.add-glsl-version.patch.1 \
 ))
 
 # vim: set noet sw=4 ts=4:

external/collada2gltf/patches/collada2gltf.add-glsl-version.patch.1

+diff -ur collada2gltf.org/shaders/commonProfileShaders.cpp collada2gltf/shaders/commonProfileShaders.cpp
+--- collada2gltf.org/shaders/commonProfileShaders.cpp	2014-11-26 22:05:07.445842977 +0100
++++ collada2gltf/shaders/commonProfileShaders.cpp	2014-11-26 22:07:24.313844588 +0100
+@@ -367,7 +367,8 @@
+     public:
+         
+         GLSLShader(shared_ptr <GLTFProfile> profile) {
+-            this->_declarations = "#ifdef GL_ES_VERSION_2_0\n";
++            this->_declarations = "#version 130\n";
++            this->_declarations += "#ifdef GL_ES_VERSION_2_0\n";
+             this->_declarations += "precision highp float;\n";
+             this->_declarations += "#endif\n";
+             this->_body = "void main(void) {\n";