diff --git a/src/gl/scene/gl_scene.cpp b/src/gl/scene/gl_scene.cpp
index ad3af273b..681af98a6 100644
--- a/src/gl/scene/gl_scene.cpp
+++ b/src/gl/scene/gl_scene.cpp
@@ -1175,13 +1175,13 @@ uint32_t FGLInterface::GetCaps()
 	else if (!(FGLRenderBuffers::IsEnabled()))
 	{
 		// truecolor is always available when renderbuffers are unavailable because palette tonemap is not possible
-		FlagSet |= RFF_TRUECOLOR | RFF_MATSHADER;
+		FlagSet |= RFF_TRUECOLOR | RFF_MATSHADER | RFF_BRIGHTMAP;
 	}
 	else
 	{
 		if (gl_tonemap != 5) // not running palette tonemap shader
 			FlagSet |= RFF_TRUECOLOR;
-		FlagSet |= RFF_MATSHADER | RFF_POSTSHADER;
+		FlagSet |= RFF_MATSHADER | RFF_POSTSHADER | RFF_BRIGHTMAP;
 	}
 	return (uint32_t)FlagSet;
 }
diff --git a/src/swrenderer/r_swrenderer.cpp b/src/swrenderer/r_swrenderer.cpp
index 026252dc8..fec82c30e 100644
--- a/src/swrenderer/r_swrenderer.cpp
+++ b/src/swrenderer/r_swrenderer.cpp
@@ -378,3 +378,20 @@ void FSoftwareRenderer::PreprocessLevel()
 void FSoftwareRenderer::CleanLevelData()
 {
 }
+
+uint32_t FSoftwareRenderer::GetCaps()
+{
+	ActorRenderFeatureFlags FlagSet = RFF_UNCLIPPEDTEX;
+
+	if (r_polyrenderer)
+		FlagSet |= RFF_POLYGONAL | RFF_TILTPITCH;
+	else
+		FlagSet |= RFF_VOXELS;
+
+	if (screen && screen->IsBgra())
+		FlagSet |= RFF_TRUECOLOR;
+	else
+		FlagSet |= RFF_COLORMAP;
+
+	return (uint32_t)FlagSet;
+}
\ No newline at end of file
diff --git a/src/swrenderer/r_swrenderer.h b/src/swrenderer/r_swrenderer.h
index 91b4dcdfb..06946321f 100644
--- a/src/swrenderer/r_swrenderer.h
+++ b/src/swrenderer/r_swrenderer.h
@@ -35,6 +35,8 @@ struct FSoftwareRenderer : public FRenderer
 	void PreprocessLevel() override;
 	void CleanLevelData() override;
 
+	uint32_t GetCaps() override;
+
 private:
 	void PrecacheTexture(FTexture *tex, int cache);