[Renderer] Quake style water

[hzqst]

	if( RP_NORMALPASS() && ( tr.viewparams.waterlevel >= 3 ))
	{
		RI->fov_x = atan( tan( DEG2RAD( RI->fov_x ) / 2 ) * ( 0.97 + sin( tr.time * 1.5 ) * 0.03 )) * 2 / (M_PI / 180.0);
		RI->fov_y = atan( tan( DEG2RAD( RI->fov_y ) / 2 ) * ( 1.03 - sin( tr.time * 1.5 ) * 0.03 )) * 2 / (M_PI / 180.0);
	}

 unsigned char* ptr = buffer;
 int amp = width/64;
 const int tick = (SDL_GetTicks()/4) & 1023;
 for(int yi = 0; yi < height; yi++, ptr+= width)
 {
  int shift = amp/2 + amp/2*sin((4*yi/(double)height + tick/(double)1024)*2*M_PI);
  memmove(ptr+shift, ptr, width-shift);
 }
 for(int xi = 0; xi < width; xi++)
 {
  int shift = amp/2 + amp/2*sin((4*xi/(double)width + tick/(double)1024)*2*M_PI);
  ptr = buffer + xi + (height-1)*width;
  for(int c = 0; c < height-shift; c++, ptr -= width)
   *ptr = *(ptr-shift*width);
 }

varying vec2 v_texcoord;

uniform float time;

uniform float wave_size;
uniform float wave_amount;
uniform float wave_speed;
uniform float transparency;

void main()
{
	//Wave Effect
    vec2 uv = v_texcoord;
    uv.x += cos(uv.y * wave_amount + time * wave_speed) / wave_size;
    uv.y += sin(uv.x * wave_amount + time * wave_speed) / wave_size;

	gl_FragColor = texture2D(gm_BaseTexture, uv);
	gl_FragColor.a *= transparency;
}

[di57inct]

Related to #215 ?

[hzqst]

Related to #215 ?

Nope

[di57inct]

Can you explain why that issue is not possible to fix?

[hzqst]

Done