diff --git a/src/engine/renderer/gl_shader.cpp b/src/engine/renderer/gl_shader.cpp
index 88acd065e9..512cdfb7df 100644
--- a/src/engine/renderer/gl_shader.cpp
+++ b/src/engine/renderer/gl_shader.cpp
@@ -419,6 +419,7 @@ struct addedExtension_t {
 static const std::vector<addedExtension_t> fragmentVertexAddedExtensions = {
 	{ glConfig2.gpuShader4Available, 130, "EXT_gpu_shader4" },
 	{ glConfig2.gpuShader5Available, 400, "ARB_gpu_shader5" },
+	{ glConfig2.textureFloatAvailable, 130, "ARB_texture_float" },
 	{ glConfig2.textureGatherAvailable, 400, "ARB_texture_gather" },
 	{ glConfig2.textureIntegerAvailable, 0, "EXT_texture_integer" },
 	{ glConfig2.textureRGAvailable, 0, "ARB_texture_rg" },
@@ -866,6 +867,10 @@ static std::string GenEngineConstants() {
 		AddDefine( str, "r_colorGrading", 1 );
 	}
 
+	if ( r_highPrecisionRendering.Get() ) {
+		AddDefine( str, "r_highPrecisionRendering", 1 );
+	}
+
 	return str;
 }
 
diff --git a/src/engine/renderer/glsl_source/cameraEffects_fp.glsl b/src/engine/renderer/glsl_source/cameraEffects_fp.glsl
index fc14e1942a..f4eb1f1e0c 100644
--- a/src/engine/renderer/glsl_source/cameraEffects_fp.glsl
+++ b/src/engine/renderer/glsl_source/cameraEffects_fp.glsl
@@ -62,7 +62,9 @@ void main()
 	color *= u_GlobalLightFactor;
 
 #if defined(r_highPrecisionRendering) && defined(HAVE_ARB_texture_float)
-	color.rgb = TonemapLottes( color.rgb * u_TonemapExposure );
+	if( u_Tonemap ) {
+		color.rgb = TonemapLottes( color.rgb * u_TonemapExposure );
+	}
 #endif
 
 	color.rgb = clamp( color.rgb, vec3( 0.0f ), vec3( 1.0f ) );