GL example fixes

[einarf]

• Restore buffer rendering backend as default for spritelists
• Fix spritelist customization examples

[Copilot]

Pull Request Overview

This PR restores the buffer rendering backend as the default for SpriteLists and fixes various spritelist customization examples in OpenGL. Key updates include switching the default backend to SpriteListBufferData, updating shader inputs from vec3 to vec4, and correcting minor naming inconsistencies.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
arcade/sprite_list/sprite_list.py	Restores default backend by activating SpriteListBufferData and removing duplicate instantiation of SpriteListTextureData.
arcade/examples/gl/spritelist_interaction_visualize_dist_los_trans.py	Updates shader input type from vec3 to vec4 and accesses geometry via coins.data.geometry.
arcade/examples/gl/spritelist_interaction_visualize_dist_los.py	Similar shader input and geometry access updates as the previous shader example.
arcade/examples/gl/spritelist_interaction_visualize_dist.py	Updates shader input types and geometry rendering to use data.geometry.
arcade/examples/gl/spritelist_interaction_hijack_positions.py	Adds type checks, updates shader inputs to vec4, and fixes a spelling typo in a comment.
arcade/examples/gl/spritelist_interaction_bouncing_coins.py	Adjusts SpriteList instantiation and buffer description input names for consistency.

Comments suppressed due to low confidence (2)

arcade/examples/gl/spritelist_interaction_hijack_positions.py:45

• The comment uses 'bendyness' which is a misspelling. Please update it to 'bendiness' to ensure consistent naming.

uniform float bend;  // The "bendyness" value accelerating rotations

arcade/examples/gl/spritelist_interaction_bouncing_coins.py:36

• Switching from 'use_spatial_hash=None' to 'use_spatial_hash=False' clarifies the intended behavior; please ensure that any usage relying on the old default value is updated accordingly.

self.coins = arcade.SpriteList(use_spatial_hash=False)