我正在开发一款适用于iPhone的OpenGL-ES生活程序游戏,我有一个包含整个网格布尔值的数组,我为网格数组所做的是:iPhone OGLES生命游戏绘图
grid = (BOOL *)malloc(2*XSize*YSize*sizeof(BOOL));
我想知道将这个线性阵列绘制到屏幕上的好方法是什么。
我试图创建Vertices数组,然后通过glDrawArray绘图,但我似乎无法得到它的权利,所以我想知道如果有人可以帮助我。这是我想现在是时候渲染某种原因造成文物的方法:
- (void)GridToVertices {
int current = 0;
for(int y=-backingHeight/2;y<backingHeight/2;y++) {
for(int x=-backingWidth/2;x<backingWidth/2;x++) {
Vertices[current] = x;
Vertices[current+1] = y;
current+=2;
}
}
}
然后渲染它像这样:我想通了,我做错了什么
- (void)render {
[self GridToVertices];
[self GridToColors];
[EAGLContext setCurrentContext:context];
glBindFramebufferOES(GL_FRAMEBUFFER_OES, defaultFramebuffer);
glViewport(0, 0, backingWidth, backingHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float Left = -backingWidth/2;
float Right = backingWidth/2;
float Up = -backingHeight/2;
float Down = backingHeight/2;
glOrthof(Left, Right, Up, Down, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glVertexPointer(2, GL_FLOAT, 0, Vertices);
glEnableClientState(GL_VERTEX_ARRAY);
glColorPointer(4, GL_UNSIGNED_BYTE, 0, Colors);
glEnableClientState(GL_COLOR_ARRAY);
glDrawArrays(GL_POINTS, 0, [grid resolution]);
glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer);
[context presentRenderbuffer:GL_RENDERBUFFER_OES];
}
我仍然要回顾一下为什么这种方法能够正常工作,但它确实有效! – Parad0x13 2010-07-11 19:48:12