shaders: Add GLSL port of simple.

Author: CrossVR

res/gamedata/shaders/gl/iostructs/p_portal.h

@@ -0,0 +1,19 @@
+
+out vec4 SV_Target;
+
+struct 	v2p
+{
+	float2	tc0	; // TEXCOORD0;	// base
+};
+
+layout(location = TEXCOORD0)	in float4	p_simple_tc0	; // TEXCOORD0;	// base
+
+float4 _main ( v2p I );
+
+void main()
+{
+	v2p			I;
+	I.tc0		= p_simple_tc0;
+
+	SV_Target	= _main ( I );
+}

res/gamedata/shaders/gl/iostructs/p_simple.h

@@ -0,0 +1,11 @@
+
+out vec4 SV_Target;
+
+layout(location = COLOR0)		in float4	p_simple_C	; // COLOR0; 
+
+float4 _main ( float4 C );
+
+void main()
+{
+	SV_Target	= _main ( p_simple_C );
+}