Function CIN_AddTextCrawl

code/client/cl_cin.cpp:1604–1681

#define TC_DELAY 9000
#define TC_STOPTIME 81000
static void CIN_AddTextCrawl()
{
	refdef_t	refdef;
	polyVert_t	verts[4];

	// Set up refdef
	memset( &refdef, 0, sizeof( refdef ));

	refdef.rdflags = RDF_NOWORLDMODEL;
	AxisClear( refdef.viewaxis );

	refdef.fov_x = 130;
	refdef.fov_y = 130;

	refdef.x = 0;
	refdef.y = -50;
	refdef.width = cls.glconfig.vidWidth;
	refdef.height = cls.glconfig.vidHeight * 2; // deliberately extend off the bottom of the screen

	// use to set shaderTime for scrolling shaders
	refdef.time = 0;

	// Set up the poly verts
	float fadeDown = 1.0;
	if (cls.realtime-CL_iPlaybackStartTime >= (TC_STOPTIME-2500))
	{
		fadeDown = (TC_STOPTIME - (cls.realtime-CL_iPlaybackStartTime))/ 2480.0f;
		if (fadeDown < 0)
		{
			fadeDown = 0;
		}
		if (fadeDown > 1)
		{
			fadeDown = 1;
		}
	}
	for ( int i = 0; i < 4; i++ )
	{
		verts[i].modulate[0] = 255*fadeDown; // gold color?
		verts[i].modulate[1] = 235*fadeDown;
		verts[i].modulate[2] = 127*fadeDown;
		verts[i].modulate[3] = 255*fadeDown;
	}

	VectorScaleM( verts[2].modulate, 0.1f, verts[2].modulate ); // darken at the top??
	VectorScaleM( verts[3].modulate, 0.1f, verts[3].modulate );

#define TIMEOFFSET  +(cls.realtime-CL_iPlaybackStartTime-TC_DELAY)*0.000015f -1
	VectorSet( verts[0].xyz, TC_PLANE_NEAR, -TC_PLANE_WIDTH, TC_PLANE_TOP );
	verts[0].st[0] = 1;
	verts[0].st[1] = 1 TIMEOFFSET;

	VectorSet( verts[1].xyz, TC_PLANE_NEAR, TC_PLANE_WIDTH, TC_PLANE_TOP );
	verts[1].st[0] = 0;
	verts[1].st[1] = 1 TIMEOFFSET;

	VectorSet( verts[2].xyz, TC_PLANE_FAR, TC_PLANE_WIDTH, TC_PLANE_BOTTOM );
	verts[2].st[0] = 0;