填充区域与纹理，cocos2d

Question

我用Ray Wenderlich课程创建了动态地形，但我遇到了一些问题。我使用CCTexture2D来填充地形区域。在第一分钟它完全没问题，但经过一段时间后，质地会更顺畅，更顺畅，更顺畅。 这是代码：

纹理初始化：

    ccTexParams params = {GL_LINEAR,GL_LINEAR,GL_REPEAT,GL_CLAMP_TO_EDGE};

    [texturePattern.texture setTexParameters:&params];

    justTexture = [[CCTextureCache sharedTextureCache] addImage:@"text1.jpg"];
    [justTexture generateMipmap];
    [justTexture setTexParameters:&params];

我填充区域的方法：

- （无效）画画 {

CC_NODE_DRAW_SETUP();

//ccGLBindTexture2D(texturePattern.texture.name);
ccGLBindTexture2D(justTexture.name);
ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position | kCCVertexAttribFlag_TexCoords);

ccDrawColor4F(1.0f, 1.0f, 1.0f, 1.0f);

glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, _hillVertices);
glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, 0, _hillTexCoords);

glDrawArrays(GL_TRIANGLE_STRIP, 0, (GLsizei)_nHillVertices);

glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, _highVertices);
glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, 0, _highTexCoords);

glDrawArrays(GL_TRIANGLE_STRIP, 0, (GLsizei)_nHighVertices);

}