diff --git a/res/gamedata/shaders/gl/common_defines.h b/res/gamedata/shaders/gl/common_defines.h
index 92dd68a11e8..ae49a02cc76 100644
--- a/res/gamedata/shaders/gl/common_defines.h
+++ b/res/gamedata/shaders/gl/common_defines.h
@@ -2,35 +2,23 @@
 #define	common_defines_h_included
 
 //////////////////////////////////////////////////////////////////////////////////////////
-// Defines
+// Defines                                		//
 #define def_gloss       float(2.f /255.f)
 #define def_aref        float(200.f/255.f)
 #define def_dbumph      float(0.333f)
 #define def_virtualh    float(0.05f)              // 5cm
-#define def_distort     float(0.05f)              // we get -0.5 .. 0.5 range, this is -512 .. 512 for 1024, so scale it
-#define def_hdr         float(9.f)                // hight luminance range float(3.h)
-#define def_hdr_clip	  float(0.75f)              //
+#define def_distort     float(0.05f)             // we get -0.5 .. 0.5 range, this is -512 .. 512 for 1024, so scale it
+#define def_hdr         float(9.f)         		// hight luminance range float(3.h)
+#define def_hdr_clip	float(0.75f)        		//
 
 #define	LUMINANCE_VECTOR	float3(0.3f, 0.38f, 0.22f)
 
 //////////////////////////////////////////////////////////////////////////////////////////
-// skyloader: if you want to resize smaps in renderer, then do not forget to change this file too
-#ifndef SMAP_QUALITY
-const float SMAP_size = 2048.f;
-#elif SMAP_QUALITY == 1
-const float SMAP_size = 1536.f;
-#elif SMAP_QUALITY == 2
-const float SMAP_size = 2048.f;
-#elif SMAP_QUALITY == 3
-const float SMAP_size = 2560.f;
-#elif SMAP_QUALITY == 4
-const float SMAP_size = 3072.f;
-#elif SMAP_QUALITY == 5
-const float SMAP_size = 4096.f;
+#ifndef SMAP_size
+#define SMAP_size        1024
 #endif
-//////////////////////////////////////////////////////////////////////////////////////////
-#define PARALLAX_H      float(0.02f)
-#define parallax        float2(PARALLAX_H, -PARALLAX_H/2)
+#define PARALLAX_H 0.02
+#define parallax float2(PARALLAX_H, -PARALLAX_H/2)
 //////////////////////////////////////////////////////////////////////////////////////////
 
-#endif	//	common_defines_h_included
+#endif	//	common_defines_h_included
\ No newline at end of file
diff --git a/src/Layers/xrRenderPC_GL/rgl.cpp b/src/Layers/xrRenderPC_GL/rgl.cpp
index 03b4addbbb1..ac162923e16 100644
--- a/src/Layers/xrRenderPC_GL/rgl.cpp
+++ b/src/Layers/xrRenderPC_GL/rgl.cpp
@@ -225,7 +225,7 @@ void CRender::create()
     o.nvdbt = false;
     if (o.nvdbt) Msg("* NV-DBT supported and used");
 
-    // options (smap-pool-size) // skyloader: if you want to resize smaps, then do not forget to change them in shaders too (common_defines.h)
+    // options (smap-pool-size)
     if (strstr(Core.Params, "-smap1536")) o.smapsize = 1536;
     if (strstr(Core.Params, "-smap2048")) o.smapsize = 2048;
     if (strstr(Core.Params, "-smap2560")) o.smapsize = 2560;
@@ -798,22 +798,13 @@ HRESULT CRender::shader_compile(
     u32 len = 0;
     // options
     {
-		// skyloader: smap size changed to smap quality because something wrong happens with the conversion of defines to float data on amd videocards
-		u8 uSmapQuality = 2;
-		switch (o.smapsize)
-		{
-			case 1536: uSmapQuality = 1; break;
-			case 2048: uSmapQuality = 2; break;
-			case 2560: uSmapQuality = 3; break;
-			case 3072: uSmapQuality = 4; break;
-			case 4096: uSmapQuality = 5; break;
-		}
-        xr_sprintf						(c_smapsize, "%d", uSmapQuality);
-        defines[def_it].Name			= "SMAP_QUALITY";
-        defines[def_it].Definition		= c_smapsize;
+        xr_sprintf(c_smapsize, "%04d", u32(o.smapsize));
+        defines[def_it].Name = "SMAP_size";
+        defines[def_it].Definition = c_smapsize;
         def_it++;
-        xr_strcat						(sh_name, c_smapsize);
-        ++len;
+        VERIFY(xr_strlen(c_smapsize) == 4);
+        xr_strcat(sh_name, c_smapsize);
+        len += 4;
     }
 
     if (o.fp16_filter)