Implement a way of rendering images without spritesheets (Fixes #1086)

Cargo.toml

@@ -216,5 +216,9 @@ path = "examples/spotlights/main.rs"
 name = "sprite_camera_follow"
 path = "examples/sprite_camera_follow/main.rs"
 
+[[example]]
+name = "simple_image"
+path = "examples/simple_image/main.rs"
+
 [workspace]
 members = ["amethyst_gltf", "tests/amethyst_test"]

amethyst_renderer/src/lib.rs

@@ -18,7 +18,7 @@
 //!
 //! This is where, for a `DrawX` pass, you will find a corresponding `DrawXSeparate` pass which
 //! supports vertex skinning and joint transformations to improve the render. An exception to this
-//! is the `DrawSprite` pass, which does not support joint transformations.
+//! is the `DrawFlat2D` pass, which does not support joint transformations.
 //!
 //! [am]: https://www.amethyst.rs/
 //! [gh]: https://github.com/amethyst/amethyst/tree/master/src/renderer
@@ -107,8 +107,8 @@ pub use {
     mesh::{vertex_data, Mesh, MeshBuilder, MeshHandle, VertexBuffer},
     mtl::{Material, MaterialDefaults, TextureOffset},
     pass::{
-        get_camera, set_vertex_args, DebugLinesParams, DrawDebugLines, DrawFlat, DrawFlatSeparate,
-        DrawPbm, DrawPbmSeparate, DrawShaded, DrawShadedSeparate, DrawSkybox, DrawSprite,
+        get_camera, set_vertex_args, DebugLinesParams, DrawDebugLines, DrawFlat, DrawFlat2D,
+        DrawFlatSeparate, DrawPbm, DrawPbmSeparate, DrawShaded, DrawShadedSeparate, DrawSkybox,
         SkyboxColor,
     },
     pipe::{
@@ -124,7 +124,8 @@ pub use {
         JointTransformsPrefab, JointWeights,
     },
     sprite::{
-        Sprite, SpriteRender, SpriteSheet, SpriteSheetFormat, SpriteSheetHandle, TextureCoordinates,
+        Flipped, Sprite, SpriteRender, SpriteSheet, SpriteSheetFormat, SpriteSheetHandle,
+        TextureCoordinates,
     },
     sprite_visibility::{SpriteVisibility, SpriteVisibilitySortingSystem},
     system::RenderSystem,