From 8919aec663f9539e44d88ba258c4a71e32f2d2ab Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Fri, 10 Dec 2010 21:40:36 +0900
Subject: [PATCH] Get global fog working in mtex mode.

---
 libs/video/renderer/gl/gl_mod_alias.c |  6 +++++-
 libs/video/renderer/gl/gl_rmain.c     | 13 ++++++++++---
 libs/video/renderer/gl/gl_rmisc.c     |  1 +
 libs/video/renderer/gl/gl_rsurf.c     |  6 +++---
 4 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/libs/video/renderer/gl/gl_mod_alias.c b/libs/video/renderer/gl/gl_mod_alias.c
index 50481a1f6..aa29022c3 100644
--- a/libs/video/renderer/gl/gl_mod_alias.c
+++ b/libs/video/renderer/gl/gl_mod_alias.c
@@ -769,8 +769,10 @@ R_DrawAliasModel (entity_t *e)
 
 				qfglColor4fv (e->colormod);
 
-				qfglBindTexture (GL_TEXTURE_2D, fb_texture);								
+				qfglBindTexture (GL_TEXTURE_2D, fb_texture);
+				Fog_StartAdditive ();
 				GL_DrawAliasFrameTri (vo);
+				Fog_StopAdditive ();
 				
 				if (gl_vector_light->int_val) {
 					qfglEnable (GL_LIGHTING);
@@ -790,7 +792,9 @@ R_DrawAliasModel (entity_t *e)
 				qfglColor4fv (e->colormod);
 				
 				qfglBindTexture (GL_TEXTURE_2D, fb_texture);
+				Fog_StartAdditive ();
 				GL_DrawAliasFrame (vo);
+				Fog_StopAdditive ();
 				
 				if (gl_vector_light->int_val) {
 					qfglEnable (GL_LIGHTING);
diff --git a/libs/video/renderer/gl/gl_rmain.c b/libs/video/renderer/gl/gl_rmain.c
index d95abc43f..d6da026be 100644
--- a/libs/video/renderer/gl/gl_rmain.c
+++ b/libs/video/renderer/gl/gl_rmain.c
@@ -407,6 +407,8 @@ R_SetupFrame (void)
 
 	r_framecount++;
 
+	Fog_SetupFrame ();
+
 	// build the transformation matrix for the given view angles
 	VectorCopy (r_refdef.vieworg, r_origin);
 
@@ -524,6 +526,7 @@ R_RenderScene (void)
 
 	R_SetupFrame ();
 	R_SetupGL ();
+	Fog_EnableGFog ();
 	R_MarkLeaves ();			// done here so we know if we're in water
 	R_PushDlights (vec3_origin);
 	R_DrawWorld ();				// adds static entities to the list
@@ -531,6 +534,13 @@ R_RenderScene (void)
 	R_DrawEntitiesOnList ();
 	R_RenderDlights ();
 
+	R_DrawWaterSurfaces ();
+	R_DrawParticles ();
+
+	Fog_DisableGFog ();
+
+	R_DrawViewModel ();
+
 	if (R_TestErrors (0))
 		R_DisplayErrors ();
 	R_ClearErrors ();
@@ -628,9 +638,6 @@ R_RenderView_ (void)
 
 	// render normal view
 	R_RenderScene ();
-	R_DrawViewModel ();
-	R_DrawWaterSurfaces ();
-	R_DrawParticles ();
 
 	// render mirror view
 	R_Mirror ();
diff --git a/libs/video/renderer/gl/gl_rmisc.c b/libs/video/renderer/gl/gl_rmisc.c
index 1f225d2ba..bd4343084 100644
--- a/libs/video/renderer/gl/gl_rmisc.c
+++ b/libs/video/renderer/gl/gl_rmisc.c
@@ -153,6 +153,7 @@ R_Init (void)
 	r_init = 1;
 	R_InitParticles ();
 	R_InitSprites ();
+	Fog_Init ();
 }
 
 VISIBLE void
diff --git a/libs/video/renderer/gl/gl_rsurf.c b/libs/video/renderer/gl/gl_rsurf.c
index 262b7ed5e..ef80348eb 100644
--- a/libs/video/renderer/gl/gl_rsurf.c
+++ b/libs/video/renderer/gl/gl_rsurf.c
@@ -638,10 +638,11 @@ test_node (mnode_t *node)
 static void
 R_RecursiveWorldNode (mnode_t *node)
 {
+#define NODE_STACK 1024
 	struct {
 		mnode_t    *node;
 		int         side;
-	}          *node_ptr, node_stack[1024];
+	}          *node_ptr, node_stack[NODE_STACK];
 	mnode_t    *front;
 	int         side;
 
@@ -652,8 +653,7 @@ R_RecursiveWorldNode (mnode_t *node)
 			side = get_side (node);
 			front = node->children[side];
 			if (test_node (front)) {
-				if (node_ptr - node_stack
-					== sizeof (node_stack) / sizeof (node_stack[0]))
+				if (node_ptr - node_stack == NODE_STACK)
 					Sys_Error ("node_stack overflow");
 				node_ptr->node = node;
 				node_ptr->side = side;