第一种：
修改 ccConfig.h
将#define CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL 0 改为 #define CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL 1
/** @def CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL
If enabled, the texture coordinates will be calculated by using this formula:
– texCoord.left = (rect.origin.x*2+1) / (texture.wide*2);
– texCoord.right = texCoord.left + (rect.size.width*2-2)/(texture.wide*2);
The same for bottom and top.
This formula prevents artifacts by using 99% of the texture.
The “correct” way to prevent artifacts is by using the spritesheet-artifact-fixer.py or a similar tool.
Affected nodes:
– CCSprite / CCSpriteBatchNode and subclasses: CCLabelBMFont, CCTMXTiledMap
– CCLabelAtlas
– CCQuadParticleSystem
– CCTileMap
To enabled set it to 1. Disabled by default.
@since v0.99.5
*/
#ifndef CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL
#define CC_FIX_ARTIFACTS_BY_STRECHING_TEXEL 1
#endif
第二种：
调用瓦片地图对应CCTexture2D的setAliasTexParameters接口。
若调用之后还有黑线，则还调用 CCDirector::sharedDirector()->setProjection(kCCDirectorProjection2D);