Game Development Reference
In-Depth Information
We have talked about the
RenderTarget::draw()
method in previous chapters, but
we haven't yet mentioned the second (optional parameter) - an instance of
sf::RenderStates
. The class holds four values, which can be defined for each draw
call—
sf::BlendMode
,
sf::Transform
,
Texture*
, and
Shader*
. We can set
those before passing the render states to the
RenderTarget::draw()
method, but
some
Drawable
objects set them automatically (for example, the
Sprite
class com-
bines its transform with the one given and sets its own texture). The class also has implicit
constructors for each of its fields, so passing just one of those types works, without having
to create the
RenderState
object explicitly. For example, the following code works
just fine:
Knowing the basics of the
RenderTarget
class allows us to start talking about a differ-
ent implementation of it, in the form of
sf::RenderTexture
.
