shaders: Add GLSL port of rain shaders.

Author: CrossVR

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

@@ -0,0 +1,23 @@
+
+out vec4 SV_Target;
+#ifdef MSAA_OPTIMIZATION
+in int gl_SampleID;
+#endif
+
+layout(location = TEXCOORD0)	in float2	p_rain_tc	; // TEXCOORD0;
+layout(location = TEXCOORD1)	in float2	p_rain_tcJ	; // TEXCOORD1; 
+
+#ifdef MSAA_OPTIMIZATION
+float4 _main ( float2 tc, float2 tcJ, uint iSample );
+#else
+float4 _main ( float2 tc, float2 tcJ );
+#endif
+
+void main()
+{
+#ifdef MSAA_OPTIMIZATION
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ, gl_SampleID );
+#else
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ );
+#endif
+}

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

@@ -0,0 +1,23 @@
+
+out vec4 SV_Target;
+#ifdef GBUFFER_OPTIMIZATION
+in vec4 gl_FragCoord;
+#endif
+
+layout(location = TEXCOORD0)	in float2	p_rain_tc	; // TEXCOORD0;
+layout(location = TEXCOORD1)	in float2	p_rain_tcJ	; // TEXCOORD1; 
+
+#ifdef GBUFFER_OPTIMIZATION
+float4 _main ( float2 tc, float2 tcJ, float4 pos2d );
+#else
+float4 _main ( float2 tc, float2 tcJ );
+#endif
+
+void main()
+{
+#ifdef GBUFFER_OPTIMIZATION
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ, gl_FragCoord );
+#else
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ );
+#endif
+}

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

@@ -0,0 +1,43 @@
+
+out vec4 SV_Target;
+#ifdef MSAA_OPTIMIZATION
+in int gl_SampleID;
+#endif
+#ifdef GBUFFER_OPTIMIZATION
+in vec4 gl_FragCoord;
+#endif
+
+layout(location = TEXCOORD0)	in float2	p_rain_tc	; // TEXCOORD0;
+layout(location = TEXCOORD1)	in float2	p_rain_tcJ	; // TEXCOORD1; 
+layout(location = COLOR)		in float4	p_rain_Color; // COLOR; 
+
+#ifdef GBUFFER_OPTIMIZATION
+#ifdef MSAA_OPTIMIZATION
+float4 _main ( float2 tc, float2 tcJ, float4	Color, float4 pos2d, uint iSample  );
+#else
+float4 _main ( float2 tc, float2 tcJ, float4	Color, float4 pos2d );
+#endif
+#else
+#ifdef MSAA_OPTIMIZATION
+float4 _main ( float2 tc, float2 tcJ, uint iSample );
+#else
+float4 _main ( float2 tc, float2 tcJ );
+#endif
+#endif
+
+void main()
+{
+#ifdef GBUFFER_OPTIMIZATION
+#ifdef MSAA_OPTIMIZATION
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ, p_rain_Color, gl_FragCoord, gl_SampleID  );
+#else
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ, p_rain_Color, gl_FragCoord );
+#endif
+#else
+#ifdef MSAA_OPTIMIZATION
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ, gl_SampleID );
+#else
+	SV_Target	= _main ( p_rain_tc, p_rain_tcJ );
+#endif
+#endif
+}