port: add MSAA setting

port/fast3d/gfx_pc.cpp

@@ -2552,7 +2552,6 @@ extern "C" void gfx_init(struct GfxWindowManagerAPI* wapi, struct GfxRenderingAP
     gfx_rapi->init();
     gfx_rapi->update_framebuffer_parameters(0, width, height, 1, false, true, true, true);
     gfx_current_dimensions.internal_mul = 1;
-    gfx_msaa_level = 1;
     gfx_current_game_window_viewport.width = gfx_current_dimensions.width = width;
     gfx_current_game_window_viewport.height = gfx_current_dimensions.height = height;
     game_framebuffer = gfx_rapi->create_framebuffer();

port/src/config.c

@@ -34,6 +34,7 @@ struct configentry {
 	{ "Video.FramerateLimit",    CONFIG_S32, { .s32val = 0        } },
 	{ "Video.FovY",              CONFIG_F32, { .f32val = 60.f     } },
 	{ "Video.TextureFilter",     CONFIG_S32, { .s32val = 1        } },
+	{ "Video.MSAA",              CONFIG_S32, { .s32val = 0        } },
 	/* Audio */
 	{ "Audio.BufferSize",        CONFIG_S32, { .s32val = 512      } },
 	{ "Audio.QueueLimit",        CONFIG_S32, { .s32val = 8192     } },

port/src/video.c

@@ -36,6 +36,11 @@ s32 videoInit(void)
 	const s32 h = configGetInt("Video.DefaultHeight", 480);
 	const bool fs = configGetInt("Video.DefaultFullscreen", false);
 
+	gfx_msaa_level = configGetInt("Video.MSAA", 0);
+	if (gfx_msaa_level < 1 || gfx_msaa_level > 16) {
+		gfx_msaa_level = 1;
+	}
+
 	gfx_init(wmAPI, renderingAPI, "PD", fs, w, h, 100, 100);
 
 	wmAPI->set_swap_interval(configGetInt("Video.VSync", 1));