我有两张图片:
- PNG (sRGB) 64x64(从网络下载)
- PNG (sRGB),从 fla 移植到 png,然后,从 png 到 jpg 与 sRGB,然后到 PNG (sRGB)。
我正在尝试用从这张图片创建的纹理填充多边形:
CCTexture2D *texture = [[CCTextureCache sharedTextureCache] addImage:spriteName];
polygon = [[[PhisicsFilledPoligon alloc] initWithPoints:points
andTexture:texture] autorelease];
PhysicsFilledPolygon 是 box2d 的一种 PhysicsSprite,但覆盖了“draw”方法:
-(void) draw
{
ccGLBindTexture2D( [self.texture name] );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position | kCCVertexAttribFlag_TexCoords );
[prog use];
[prog setUniformForModelViewProjectionMatrix];
glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, sizeof(CGPoint), areaTrianglePoints);
glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, sizeof(CGPoint), textureCoordinates);
glDrawArrays(GL_TRIANGLES, 0, areaTrianglePointCount);
}
当我尝试使用第一张图像作为纹理时,一切正常。但由于我使用的是第二个,应用程序崩溃并出现错误:
*** Assertion failure in -[CCTexture2D setTexParameters:], /Users/SentineL/Documents/squirrels ios/squirrels/libs/cocos2d/CCTexture2D.m:743
2012-05-18 14:42:26.603 squirrels[21436:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'GL_CLAMP_TO_EDGE should be used in NPOT textures'
无论我尝试使用什么图像,结果都是相同的错误。Cocos2d 版本是 2.0 rc0。这是开始 cocos2d 的信息:
2012-05-18 14:42:25.038 squirrels[21436:707] cocos2d: OS version: 5.1 (0x05010000)
2012-05-18 14:42:25.041 squirrels[21436:707] cocos2d: GL_VENDOR: Imagination Technologies
2012-05-18 14:42:25.042 squirrels[21436:707] cocos2d: GL_RENDERER: PowerVR SGX 543
2012-05-18 14:42:25.044 squirrels[21436:707] cocos2d: GL_VERSION: OpenGL ES 2.0 IMGSGX543-63.24
2012-05-18 14:42:25.047 squirrels[21436:707] cocos2d: GL_MAX_TEXTURE_SIZE: 4096
2012-05-18 14:42:25.048 squirrels[21436:707] cocos2d: GL_MAX_TEXTURE_UNITS: 8
2012-05-18 14:42:25.049 squirrels[21436:707] cocos2d: GL_MAX_SAMPLES: 4
2012-05-18 14:42:25.051 squirrels[21436:707] cocos2d: GL supports PVRTC: YES
2012-05-18 14:42:25.053 squirrels[21436:707] cocos2d: GL supports BGRA8888 textures: YES
2012-05-18 14:42:25.054 squirrels[21436:707] cocos2d: GL supports NPOT textures: YES
2012-05-18 14:42:25.056 squirrels[21436:707] cocos2d: GL supports discard_framebuffer: YES
2012-05-18 14:42:25.057 squirrels[21436:707] cocos2d: compiled with Profiling Support: NO
2012-05-18 14:42:25.059 squirrels[21436:707] cocos2d: **** WARNING **** CC_ENABLE_GL_STATE_CACHE is disabled. To improve performance, enable it by editing ccConfig.h
2012-05-18 14:42:25.061 squirrels[21436:707] cocos2d: cocos2d v2.0.0-rc0
2012-05-18 14:42:25.063 squirrels[21436:707] cocos2d: Using Director Type:CCDirectorDisplayLink
2012-05-18 14:42:25:201 squirrels[21436:707] Retina Display Not supported
2012-05-18 14:42:25.214 squirrels[21436:707] cocos2d: animation started with frame interval: 60.00
2012-05-18 14:42:25.234 squirrels[21436:707] cocos2d: surface size: 1024x768
我的问题在哪里?