Added more info about sprite material constants

docs/en/manuals/material.md

@@ -68,7 +68,7 @@ CONSTANT_TYPE_NORMAL
 : A matrix to compute normal orientation. The world transform might include non-uniform scaling, which breaks the orthogonality of the combined world-view transform. The normal matrix is used to avoid issues with the direction when transforming normals. (The normal matrix is the transpose inverse of the world-view matrix).
 
 CONSTANT_TYPE_USER
-: A vector4 constant that you can use for any custom data you want to pass into your shader programs. You can set the initial value of the constant in the constant definition, but it is mutable through the functions `.set_constant()` and `.reset_constant()` for each component type (`sprite`, `model`, `spine`, `particlefx` and `tilemap`)
+: A vector4 constant that you can use for any custom data you want to pass into your shader programs. You can set the initial value of the constant in the constant definition, but it is mutable through the functions `.set_constant()` and `.reset_constant()` for each component type (`sprite`, `model`, `spine`, `particlefx` and `tilemap`). Changing a material constant of a single component instance [breaks render batching and will result in additional draw calls](/manuals/render/#draw-calls-and-batching).
 
 ## Samplers
 

docs/en/manuals/sprite.md

@@ -27,7 +27,7 @@ Apart from the properties *Id*, *Position* and *Rotation* the following componen
 *Blend Mode*
 : The blend mode to use when rendering this component.
 
-# Runtime manipulation
+## Runtime manipulation
 
 You can manipulate sprites in runtime through a number of different functions and properties (refer to the [API docs for usage](/ref/sprite/)). Functions:
 
@@ -39,6 +39,12 @@ A sprite also has a number of different properties that can be manipulated using
 `cursor`
 : The normalized animation cursor (`number`).
 
+`image`
+: The sprite image (`hash`). You can change this using an atlas or tilesource resource property and `go.set()`. Refer to the [API reference for an example](/ref/sprite/#image).
+
+`material`
+: The sprite material (`hash`). You can change this using a material resource property and `go.set()`. Refer to the [API reference for an example](/ref/sprite/#material).
+
 `playback_rate`
 : The animation playback rate (`number`).
 
@@ -47,3 +53,11 @@ A sprite also has a number of different properties that can be manipulated using
 
 `size`
 : The size of the sprite (`vector3`) (READ ONLY).
+
+
+## Sprite material constants
+
+The default sprite material has the following constants that can be changed using `sprite.set_constant()` and reset using `sprite.reset_constant()` (refer to the [Material manual for more details](/manuals/material/#vertex-and-fragment-constants)):
+
+`tint`
+: The color tint of the sprite (`vector4`). The vector4 is used to represent the tint with x, y, z, and w corresponding to the red, green, blue and alpha tint. Refer to the [API reference for an example](/ref/sprite/#sprite.set_constant:url-constant-value).