From a57c8382b1004e826a9a47a5a786abe688b4bb2f Mon Sep 17 00:00:00 2001
From: Artem Kharytoniuk <artemalive@gmail.com>
Date: Fri, 26 May 2017 14:34:34 +0300
Subject: [PATCH] r_lightmap functionality.

---
 src/engine/renderer/tr_shade.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/engine/renderer/tr_shade.c b/src/engine/renderer/tr_shade.c
index b1e0b71..08a2aaf 100644
--- a/src/engine/renderer/tr_shade.c
+++ b/src/engine/renderer/tr_shade.c
@@ -813,6 +813,9 @@ static void RB_IterateStagesGeneric( shaderCommands_t *input )
 				depth_range = Vk_Depth_Range::normal;
 			}
 
+			if (r_lightmap->integer && multitexture)
+				GL_Bind(tr.whiteImage); // replace diffuse texture with a white one thus effectively render only lightmap
+
             vk_shade_geometry(pipeline, multitexture, depth_range);
         }