drop non-shader codepaths

src/client/camera.cpp

@@ -603,8 +603,6 @@ void Camera::wield(const ItemStack &item)
 void Camera::drawWieldedTool(irr::core::matrix4* translation,
 		const video::SColorf &post_color)
 {
-	bool enable_shaders = g_settings->getBool("enable_shaders");
-
 	// Clear Z buffer so that the wielded tool stays in front of world geometry
 	m_wieldmgr->getVideoDriver()->clearBuffers(video::ECBF_DEPTH);
 
@@ -627,34 +625,9 @@ void Camera::drawWieldedTool(irr::core::matrix4* translation,
 		cam->updateAbsolutePosition();
 		cam->setTarget(focusPoint);
 	}
-	if (enable_shaders) {
-		m_client->setWieldPostEffectColor(post_color);
-		m_wieldmgr->drawAll();
-		m_client->setWieldPostEffectColor(video::SColorf(0.0f,0.0f,0.0f,0.0f));
-	} else {
-		// Without shaders we can't easily get the same effect.
-		// This only makes it looks slightly similar, but it's wrong, i.e. we
-		// can only make it darker.
-		video::SColorf col;
-		if (post_color.a == 0.0f) {
-			col = m_player_light_color;
-		} else {
-			video::SColorf post_color_nopremul = video::SColorf(
-					std::min(1.0f, post_color.r / post_color.a),
-					std::min(1.0f, post_color.g / post_color.a),
-					std::min(1.0f, post_color.b / post_color.a),
-					std::min(1.0f, post_color.a)
-				);
-			col = video::SColorf(
-					m_player_light_color.getRed()   * post_color_nopremul.r * (1.0f / 255.0f),
-					m_player_light_color.getGreen() * post_color_nopremul.g * (1.0f / 255.0f),
-					m_player_light_color.getBlue()  * post_color_nopremul.b * (1.0f / 255.0f),
-					1.0f
-				).getInterpolated(m_player_light_color, post_color_nopremul.a);
-		}
-		m_wieldnode->setNodeLightColor(col.toSColor());
-		m_wieldmgr->drawAll();
-	}
+	m_client->setWieldPostEffectColor(post_color);
+	m_wieldmgr->drawAll();
+	m_client->setWieldPostEffectColor(video::SColorf(0.0f,0.0f,0.0f,0.0f));
 }
 
 void Camera::drawNametags()

src/client/clientmap.cpp

@@ -1111,8 +1111,7 @@ ClientMap::getPostFxPolygons()
 	};
 
 	const std::optional<LiquidWaveParams> liquid_wave_params =
-			g_settings->getBool("enable_shaders")
-				&& g_settings->getBool("enable_waving_water") ?
+			g_settings->getBool("enable_waving_water") ?
 			LiquidWaveParams{
 				g_settings->getFloat("water_wave_height"),
 				g_settings->getFloat("water_wave_length"),