Draft: Better sprite rotation

srb20021

Yo?? This is rad as hell! I never was fond of how rollangle butchered sprites...

added Enhancement Rendering labels

Random thought about splitting rotated sprite polygons: Maybe the splitting is simpler to figure out if you keep the sprite polygon a rectangle and do the rotation using just the texture coordinates. (assuming the sprite texture is not set to wrap around)

Left: rotated polygon, Right: expanded rectangular polygon with rotated texture coordinates, yellow line represents a lightlist split

@ Hannu_Hanhi If the sprite texture isn't set to wrap, wouldn't it still use the outer-most pixels outside the 0.0-1.0 UV range? (For example, a circle sprite would have some wide diagonal lines/boxes, emerging from where the circle would touch the "striped lines" in your image.)

GL_CLAMP_TO_BORDER texture sampler mode could be usable for this.

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• 03c8cfe1 - Fix issues with rotation pivots, and add RF_PIVOTATOFFSETS
• f4a802c2 - Deprecated RF_NOSPLATROLLANGLE

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added 1581 commits

• f4a802c2...2ef231c0 - 1580 commits from branch STJr:next
• 1ea9a431 - Merge branch 'next' into rotation2

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• 9570f808 - Seriously?

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changed the description

added Feature OpenGL renderer Refactoring Software renderer labels

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• ee4f06e9 - Interpolate pivots

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This is definitely a drastic improvement over the old rollangle. I hope this is finished at some point, I assume rollangle not working at all for OpenGL sprites is why it's still a draft.

added Unmergeable label

mentioned in issue #1154

Closing this as it's been open for a very long time, while still being marked as a draft.

closed