我有一些代码应该创建一个新的 VBO 并用我使用偏移量而不是glTranslate
. 我有一个 cubeVBO 类,它创建一个带有偏移量的新立方体,但由于某种原因,该代码只被调用一次。剔除似乎也无法正常工作,因为当我就在它们面前时,立方体的面会消失。这是课程:
public class CubeVBO {
public int vboVHandle;
int offset = Block.size;
int count = 0;
public FloatBuffer vertices;
public CubeVBO(float x, float z, float y){
vertices = BufferUtils.createFloatBuffer(3 * 4 * 6);
vertices.put(new float[] {
x + offset, y + offset, z,
x - offset, y + offset, z,
x - offset, y + offset, z - Block.size,
x + offset, y + offset, z - Block.size,
x + offset, y - offset, z - Block.size,
x - offset, y - offset, z - Block.size,
x - offset, y - offset, z,
x + offset, y - offset, z,
x + offset, y + offset, z - Block.size,
x - offset, y + offset, z - Block.size,
x - offset, y - offset, z - Block.size,
x + offset, y - offset, z - Block.size,
x + offset, y - offset, z,
x - offset, y - offset, z,
x - offset, y + offset, z,
x + offset, y + offset, z,
x - offset, y + offset, z - Block.size,
x - offset, y + offset, z,
x - offset, y - offset, z,
x - offset, y - offset, z - Block.size,
x + offset, y + offset, z,
x + offset, y + offset, z - Block.size,
x + offset, y - offset,
z - Block.size, x + offset, y - offset, z });
vertices.flip();
vboVHandle = glGenBuffers();
glBindBuffer(GL_ARRAY_BUFFER, vboVHandle);
glBufferData(GL_ARRAY_BUFFER, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
我在这个类中使用它:
public class BaseChunk {
// x - left/right y - up/down y - forward/backward
VBO vbo;
CubeVBO vertexVBO;
public static final int CHUNK_X = 16;
public static final int CHUNK_Y = 16;
public static final int CHUNK_Z = 16;
public boolean rebuild = false;
FloatBuffer blockPositionData;
FloatBuffer vertexColorData;
private Block[][][] blocks;
private int vboBlockData;
public BaseChunk() {
blocks = new Block[CHUNK_X][CHUNK_Z][CHUNK_Y];
blockPositionData = BufferUtils.createFloatBuffer((CHUNK_X * CHUNK_Z * CHUNK_Y) * 6 * 12);
for (int xx = 0; xx < CHUNK_X; xx++) {
for (int zz = 0; zz < CHUNK_Z; zz++) {
for (int yy = 0; yy < CHUNK_Y; yy++) {
blocks[xx][zz][yy] = Block.Grass;
}
}
}
}
public void rebuildChunk(int id) {
if (rebuild) {
}
}
public void makeChunk(){
for(int x = 0; x <= 16; x++){
for(int z = 0; z <= 16; z++){
for(int y = 0; y <= 16; y++){
vertexVBO = new CubeVBO((float) 16 + x, (float) 16 + z, (float) 16 + y);
}
}
}
vboBlockData = glGenBuffers();
glBindBuffer(GL_ARRAY_BUFFER, vboBlockData);
glBufferData(GL_ARRAY_BUFFER, blockPositionData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
public void render() {
vbo = new VBO();
glBindBuffer(GL_ARRAY_BUFFER, vertexVBO.vboVHandle);
glVertexPointer(3, GL_FLOAT, 0, 0L);
glBindBuffer(GL_ARRAY_BUFFER, vbo.vboCHandle);
glColorPointer(3, GL_FLOAT, 0, 0);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glPushMatrix();
//glTranslatef(0, 0, 0);
glDrawArrays(GL_QUADS, 0, 24);
glPopMatrix();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
}
我的偏移量不正确吗?还是我的 VBO 代码不正确?