shaders: Add GLSL port of model_distort4glass.

Author: CrossVR

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

@@ -0,0 +1,103 @@
+
+out gl_PerVertex { vec4 gl_Position; };
+
+struct vf
+{
+	float2	tc0	; // TEXCOORD0;	// base
+	float4	c0	; // COLOR0;		// color
+//	Igor: for additional depth dest
+#ifdef	USE_SOFT_PARTICLES
+	float4 tctexgen	; // TEXCOORD1;
+#endif	//	USE_SOFT_PARTICLES
+	float4	hpos; // SV_Position;
+};
+
+#ifdef	SKIN_NONE
+layout(location = POSITION)		in float4	v_model_P		; // POSITION;		// (float,float,float,1)
+#else
+layout(location = POSITION)		in int4		v_model_P		; // POSITION;		// (float,float,float,1) - quantized
+#endif
+#ifdef	SKIN_0
+layout(location = NORMAL)		in float3	v_model_N		; // NORMAL;		// (nx,ny,nz)
+#else
+layout(location = NORMAL)		in float4	v_model_N		; // NORMAL;		// (nx,ny,nz,index)
+#endif
+#if defined(SKIN_3) || defined(SKIN_4)
+layout(location = TANGENT)		in float4	v_model_T		; // TANGENT;		// (nx,ny,nz,weight0)
+layout(location = BINORMAL)		in float4	v_model_B		; // BINORMAL;		// (nx,ny,nz,weight1)
+#else
+layout(location = TANGENT)		in float3	v_model_T		; // TANGENT;		// (nx,ny,nz)
+layout(location = BINORMAL)		in float3	v_model_B		; // BINORMAL;		// (nx,ny,nz)
+#endif
+#ifdef	SKIN_NONE
+layout(location = TEXCOORD0)	in float2	v_model_tc		; // TEXCOORD0;	// (u,v)
+#elif defined(SKIN_2) || defined(SKIN_3)
+layout(location = TEXCOORD0)	in int4		v_model_tc		; // TEXCOORD0;	// (u,v)
+#else
+layout(location = TEXCOORD0)	in int2		v_model_tc		; // TEXCOORD0;	// (u,v)
+#endif
+#ifdef	SKIN_4
+layout(location = TEXCOORD1)	in float4	v_model_ind		; // (x=m-index0, y=m-index1, z=m-index2, w=m-index3)
+#endif
+
+layout(location = TEXCOORD0) 	out float2	v2p_particle_tc0; // TEXCOORD0;
+layout(location = COLOR0) 		out float4	v2p_particle_c0	; // COLOR0;
+#ifdef	USE_SOFT_PARTICLES
+layout(location = TEXCOORD1) 	out float4	v2p_particle_tctexgen; // TEXCOORD1;
+#endif	//	USE_SOFT_PARTICLES
+
+vf   _main (v_model v);
+
+void main()
+{
+#ifdef 	SKIN_NONE
+	v_model I;
+#endif
+#ifdef 	SKIN_0
+	v_model_skinned_0 I;
+#endif
+#ifdef	SKIN_1
+	v_model_skinned_1 I;
+#endif
+#ifdef	SKIN_2
+	v_model_skinned_2 I;
+#endif
+#ifdef	SKIN_3
+	v_model_skinned_3 I;
+#endif
+#ifdef	SKIN_4
+	v_model_skinned_4 I;
+	I.ind = v_model_ind;
+#endif
+
+	I.P = v_model_P;
+	I.N = v_model_N;
+	I.T = v_model_T;
+	I.B = v_model_B;
+	I.tc = v_model_tc;
+
+	vf O;
+#ifdef 	SKIN_NONE
+	O = _main(I);
+#endif
+#ifdef 	SKIN_0
+	O = _main(skinning_0(I));
+#endif
+#ifdef	SKIN_1
+	O = _main(skinning_1(I));
+#endif
+#ifdef	SKIN_2
+	O = _main(skinning_2(I));
+#endif
+#ifdef	SKIN_3
+	O = _main(skinning_3(I));
+#endif
+#ifdef	SKIN_4
+	O = _main(skinning_4(I));
+#endif
+
+	v2p_particle_tc0 = O.tc0;
+	v2p_particle_c0 = O.c0;
+	v2p_particle_tctexgen = O.tctexgen;
+	gl_Position = O.hpos;
+}

res/gamedata/shaders/gl/model_distort4glass.vs

@@ -0,0 +1,19 @@
+#include "common.h"
+#include "skin.h"
+#include "iostructs\v_model_distort.h"
+
+vf   _main (v_model v)
+{
+  vf     o;
+
+  o.hpos       	= mul      (m_WVP, v.P);      // xform, input in world coords
+  o.tc0      	= v.tc.xy;              // copy tc
+
+  // calculate fade
+  float3  dir_v   = normalize    (mul(m_WV,v.P));
+  float3  norm_v  = normalize    (mul(m_WV,v.N));
+  float   fade    = 0.9*abs      (dot(dir_v,norm_v));
+  o.c0        = float4(fade);
+
+  return o;
+}