When an image was used in both ways source and destination, Ebiten
worked ineffectively since Ebiten tried to make the image on a texture
atlas after the image was used as a source for a while, which tried to
create a new internal texture every time.
This fix mitigates this issue by using an exponential way to determine
whether the image should be on a texture atlas again or not, so that
an image often used as a destination will require much longer time to
become on a texture atlas again.
Updates #1464
Before this change, the image automatically becomes on a shareable
texture again when the image is not modified for a while. This was
problematic when an offscreen is not updated for a while, but used
as a render target again, as an independent image for the image is
created every time when the image is used as a render target.
After this change, the count is updated only when the image is used
as a rendering source.
Closes#1465
When an image was disposed, the image was not unregistered from the
set of 'imagesToMakeShared'. This caused a crash when trying to sync
the pixel data of the disposed image.
This change fixes the issue by unregistering the image when the
image is disposed.
Fixes#1421
Now a scissor (a clipping region) can be specified, we don't have to
worry about the rendering results out of the specified region.
Replace the implmenetation of the Fill with just a DrawTriangles with
an empty white image.
As a side effect, SubImage is avilable for Fill.
Fixes#1416
Before this change, ReplacePixels didn't affect the non-updated-count,
and an image using ReplacePixels tended to be on a shared image.
This was OK, but as lazy pixel loading is going to be introduced,
ReplacePixels also needs to reset the count.
Updates #1414
The source region information affects the condition of merging
graphics commands. To avoid performance issues by the big number of
graphcis commands, do not pass the source region whenever possible.
Fixes#1293
This skips the source-region check and reduces 'if' branches from
shader programs.
AddressUnsafe is internal only so far. We might expose this value
later.
Updates #1210
After this change, each image on the texture atlases has a
transparent border around it.
This change removes the hack to round texels not to violate the
source regions.
Fixes#1194
Updates #1171
