From 5904b538d7fd639429a450b0ad7928cd311213fd Mon Sep 17 00:00:00 2001
From: Paweł Redman <pawel.redman@gmail.com>
Date: Sun, 28 Jun 2015 00:42:21 +0200
Subject: Make cg_brighten more precise.

---
 src/cgame/cg_draw.c  | 35 ++++++++++++++++++++++++++---------
 src/cgame/cg_local.h |  4 +++-
 src/cgame/cg_main.c  |  9 +++++++--
 3 files changed, 36 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/cgame/cg_draw.c b/src/cgame/cg_draw.c
index a439b51..0ee4042 100644
--- a/src/cgame/cg_draw.c
+++ b/src/cgame/cg_draw.c
@@ -4141,13 +4141,28 @@ static void CG_DrawHealthBars( void )
 CG_Brighten
 =================
 */
-static void CG_Brighten( int iterations )
+static void CG_Brighten( float target )
 {
   int i;
 
-  for( i = 0; i < iterations; i++ )
+  if( target <= 1 )
   {
-    CG_DrawPic( 0, 0, 640, 480, cgs.media.brightenShader );
+    return;
+  }
+
+repeat:
+  for( i = 0; i < NUM_BRIGHTEN_SHADERS; i++ )
+  {
+    float factor;
+
+    factor = 1.0 + pow( 2, -i );
+
+    if( target >= factor )
+    {
+      CG_DrawPic( 0, 0, 640, 480, cgs.media.brightenShaders[ i ] );
+      target /= factor;
+      goto repeat;
+    }
   }
 }
 
@@ -4192,11 +4207,6 @@ static void CG_DrawWarpOverlay( void )
   {
     trap_R_SetColor( NULL );
 
-    if( cg_brighten.integer < 2 )
-    {
-      CG_Brighten( MIN( 2 - cg_brighten.integer, 2 ) );
-    }
-
     CG_DrawPic( 0, 0, 640, 480, cgs.media.warpOverlay );
 
     if( cg.warpExitBlocked )
@@ -4232,7 +4242,14 @@ static void CG_Draw2D( void )
   // (only 2D that can't be disabled)
   CG_DrawLighting( );
 
-  CG_Brighten( cg_brighten.integer );
+  if( cg.warping && cg_brightenWraith.value >= cg_brighten.value )
+  {
+    CG_Brighten( cg_brightenWraith.value );
+  }
+  else
+  {
+    CG_Brighten( cg_brighten.value );
+  }
 
   CG_DrawWarpOverlay( );
 
diff --git a/src/cgame/cg_local.h b/src/cgame/cg_local.h
index 8f0586e..27e9baf 100644
--- a/src/cgame/cg_local.h
+++ b/src/cgame/cg_local.h
@@ -1166,6 +1166,7 @@ typedef struct
   qboolean      warpExitBlocked;
 } cg_t;
 
+#define NUM_BRIGHTEN_SHADERS 5
 
 // all of the model, shader, and sound references that are
 // loaded at gamestate time are stored in cgMedia_t
@@ -1366,7 +1367,7 @@ typedef struct
   qhandle_t   warpingEnvironmentShader;
   qhandle_t   warpParticle;
 
-  qhandle_t   brightenShader;
+  qhandle_t   brightenShaders[ NUM_BRIGHTEN_SHADERS ];
 } cgMedia_t;
 
 typedef struct
@@ -1634,6 +1635,7 @@ extern  vmCvar_t    cg_hitSounds;
 extern  vmCvar_t    cg_hitStats;
 
 extern  vmCvar_t    cg_brighten;
+extern  vmCvar_t    cg_brightenWraith;
 
 //
 // cg_main.c
diff --git a/src/cgame/cg_main.c b/src/cgame/cg_main.c
index 91187fe..e17965c 100644
--- a/src/cgame/cg_main.c
+++ b/src/cgame/cg_main.c
@@ -242,6 +242,7 @@ vmCvar_t  cg_hitSounds;
 vmCvar_t  cg_hitStats;
 
 vmCvar_t  cg_brighten;
+vmCvar_t  cg_brightenWraith;
 
 typedef struct
 {
@@ -401,7 +402,8 @@ static cvarTable_t cvarTable[ ] =
   { &cg_hitSounds, "cg_hitSounds", "1", CVAR_ARCHIVE },
   { &cg_hitStats, "cg_hitStats", "0", CVAR_ARCHIVE },
 
-  { &cg_brighten, "cg_brighten", "0", CVAR_ARCHIVE }
+  { &cg_brighten, "cg_brighten", "0", CVAR_ARCHIVE },
+  { &cg_brightenWraith, "cg_brightenWraith", "4", CVAR_ARCHIVE }
 };
 
 static int   cvarTableSize = sizeof( cvarTable ) / sizeof( cvarTable[0] );
@@ -946,7 +948,10 @@ static void CG_RegisterGraphics( void )
   cgs.media.warpingEnvironmentShader  = trap_R_RegisterShader( "gfx/level1/warpingEnvironment" );
   cgs.media.warpParticle              = trap_R_RegisterShader( "gfx/level1/warpParticle1" );
 
-  cgs.media.brightenShader            = trap_R_RegisterShader( "gfx/brighten" );
+  for( i = 0; i < NUM_BRIGHTEN_SHADERS; i++ )
+  {
+    cgs.media.brightenShaders[ i ] = trap_R_RegisterShader( va( "gfx/brighten%d", i ) );
+  }
 
   CG_BuildableStatusParse( "ui/assets/human/buildstat.cfg", &cgs.humanBuildStat );
   CG_BuildableStatusParse( "ui/assets/alien/buildstat.cfg", &cgs.alienBuildStat );
-- 
cgit