From 9fbeb58384f9456e281518cd3a8be7fecadb7ae3 Mon Sep 17 00:00:00 2001
From: Spoike <acceptthis@users.sourceforge.net>
Date: Thu, 17 Feb 2005 03:30:24 +0000
Subject: [PATCH] Fixing v_cshift with hardware gamma on winnt. winnt sucks.
 flashbangs are non-cheatie now.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@877 fc73d0e0-1445-4013-8a0c-d673dee63da5
---
 engine/client/view.c | 44 +++++++++++++++++++++++++++++++++++---------
 engine/gl/gl_rmain.c | 10 +++++++---
 2 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/engine/client/view.c b/engine/client/view.c
index 8431796d5..a31979201 100644
--- a/engine/client/view.c
+++ b/engine/client/view.c
@@ -586,6 +586,31 @@ V_CalcBlend
 =============
 */
 #if defined(RGLQUAKE)
+
+void GLV_CalcBlendServer (float colors[4])
+{
+	extern qboolean gammaworks;
+	if (gammaworks || !v_blend[3])
+	{	//regular cshifts work through hardware gamma
+		//server sent cshifts do not.
+		colors[0] = cl.cshifts[CSHIFT_SERVER].destcolor[0]/255.0f;
+		colors[1] = cl.cshifts[CSHIFT_SERVER].destcolor[1]/255.0f;
+		colors[2] = cl.cshifts[CSHIFT_SERVER].destcolor[2]/255.0f;
+		colors[3] = cl.cshifts[CSHIFT_SERVER].percent/255.0f;
+	}
+	else
+	{
+		float na;
+		na = cl.cshifts[CSHIFT_SERVER].percent/255.0f;
+
+		colors[3] = v_blend[3] + na*(1-v_blend[3]);
+//Con_Printf ("j:%i a:%f\n", j, a);
+		na = na/colors[3];
+		colors[0] = v_blend[0]*(1-na) + (cl.cshifts[CSHIFT_SERVER].destcolor[0]/255.0f)*na;
+		colors[1] = v_blend[1]*(1-na) + (cl.cshifts[CSHIFT_SERVER].destcolor[1]/255.0f)*na;
+		colors[2] = v_blend[2]*(1-na) + (cl.cshifts[CSHIFT_SERVER].destcolor[2]/255.0f)*na;
+	}
+}
 void GLV_CalcBlend (void)
 {
 	float	r, g, b, a, a2;
@@ -596,19 +621,20 @@ void GLV_CalcBlend (void)
 	b = 0;
 	a = 0;
 
-	for (j=0 ; j<NUM_CSHIFTS ; j++)	
+	//don't apply it to the server, we'll blend the two later if the user has no hardware gamma (if they do have it, we use just the server specified value) This way we avoid winnt users having a cheat with flashbangs and stuff.
+	for (j=0 ; j<CSHIFT_SERVER ; j++)	
 	{
-		if (j != CSHIFT_SERVER)
-		{
+//		if (j != CSHIFT_SERVER)
+//		{
 			if (!gl_cshiftpercent.value || !gl_polyblend.value)
 				continue;
 
 			a2 = ((cl.cshifts[j].percent * gl_cshiftpercent.value) / 100.0) / 255.0;
-		}
-		else
-		{
-			a2 = cl.cshifts[j].percent / 255.0;	//don't allow modification of this one.
-		}
+//		}
+//		else
+//		{
+//			a2 = cl.cshifts[j].percent / 255.0;	//don't allow modification of this one.
+//		}
 
 		if (!a2)
 			continue;
@@ -665,7 +691,7 @@ void GLV_UpdatePalette (void)
 
 	new = false;
 
-	for (i=0 ; i<NUM_CSHIFTS ; i++)
+	for (i=0 ; i<CSHIFT_SERVER ; i++)
 	{
 		if (cl.cshifts[i].percent != cl.prev_cshifts[i].percent)
 		{
diff --git a/engine/gl/gl_rmain.c b/engine/gl/gl_rmain.c
index 3bf658ef9..69da57b6d 100644
--- a/engine/gl/gl_rmain.c
+++ b/engine/gl/gl_rmain.c
@@ -952,13 +952,17 @@ void GLR_DrawViewModel (void)
 R_PolyBlend
 ============
 */
+void GLV_CalcBlendServer (float colors[4]);
 void R_PolyBlend (void)
 {
+	float shift[4];
 	extern qboolean gammaworks;
-	if (!v_blend[3] || gammaworks)
+	if ((!v_blend[3] || gammaworks) && !cl.cshifts[CSHIFT_SERVER].percent)
 		return;
 
-//Con_Printf("R_PolyBlend(): %4.2f %4.2f %4.2f %4.2f\n",v_blend[0], v_blend[1],	v_blend[2],	v_blend[3]);
+	GLV_CalcBlendServer(shift);	//figure out the shift we need (normally just the server specified one)
+
+//Con_Printf("R_PolyBlend(): %4.2f %4.2f %4.2f %4.2f\n",shift[0], shift[1],	shift[2],	shift[3]);
 
 	GL_DisableMultitexture();
 
@@ -974,7 +978,7 @@ void R_PolyBlend (void)
 	qglRotatef (-90,  1, 0, 0);	    // put Z going up
 	 qglRotatef (90,  0, 0, 1);	    // put Z going up
 
-	qglColor4fv (v_blend);
+	qglColor4fv (shift);
 
 	qglBegin (GL_QUADS);