SDL/OGL platform improvements

IDE/dist/shaders/Std_font_es.vert

@@ -0,0 +1,17 @@
+precision mediump float;
+uniform mat4 screenMatrix;
+
+attribute vec4 position;
+attribute vec2 texCoord0;
+attribute vec4 color;
+
+precision lowp float;
+varying lowp vec4 varying_color;
+varying mediump vec2 varying_texCoord0;
+
+void main()
+{        
+	gl_Position = screenMatrix * position;    
+    varying_color = vec4(color.b * color.a, color.g * color.a, color.r * color.a, color.a);    
+    varying_texCoord0 = texCoord0;
+}