Question

在我的LWJGL项目中，我一直在使用VBO来平铺2D地形。它在macOS和Windows上运行良好，然而，在我的linux分区中，游戏并没有运行。我能找到的唯一主要区别是linux发行版将OpenGL版本报告为OpenGL version 3.0 Mesa 11.2.2，而在macOS上，它报告OpenGL version 2.1 ATI-1.48.21。我尝试过使用不同OpenGL版本的各种设备，我唯一能看到的问题是mesa库。这是我用来构建和渲染VBO的类：

import java.nio.FloatBuffer;
import java.util.ArrayList;

import org.lwjgl.BufferUtils;
import static org.lwjgl.opengl.GL11.*;
import org.lwjgl.opengl.*;
import org.newdawn.slick.Color;
import org.newdawn.slick.opengl.Texture;

import data.DataManager;

public class TerrainVBO {
    FloatBuffer verticies;
    FloatBuffer textCoords;
    ArrayList<Float> verticiesArray = new ArrayList<Float>();
    ArrayList<Float> textCoordsArray = new ArrayList<Float>();
    int vaoHandle;
    float invAtlasWidth;
    float invAtlasHeight;
    public TerrainVBO(DataManager dm) {
        invAtlasWidth = 1f/dm.settings.atlasMap.get("dimensions")[0];
        invAtlasHeight = 1f/dm.settings.atlasMap.get("dimensions")[1];
    }
    public void addVertex(float x, float y) {
        verticiesArray.add(x);
        verticiesArray.add(y);
    }
    public void addTexture(float x, float y) {
        textCoordsArray.add(x);
        textCoordsArray.add(y);
    }
    public void addQuad(float x, float y, float width, float height) {
        addVertex(x,y);
        addVertex(x+width,y);
        addVertex(x+width,y+height);
        addVertex(x,y+height);
    }
    public void addTextureQuad(int[] pos) {
        float x = pos[0] * invAtlasWidth + 0.001f;
        float y = pos[1] * invAtlasHeight + 0.001f;
        addTexture(x,y);
        addTexture(x+invAtlasWidth - 0.002f,y);
        addTexture(x+invAtlasWidth - 0.002f,y+invAtlasHeight - 0.002f);
        addTexture(x,y+invAtlasHeight - 0.002f);
    }
    public void preWrite() {
        verticies = BufferUtils.createFloatBuffer(verticiesArray.size());
        textCoords = BufferUtils.createFloatBuffer(textCoordsArray.size());
        for (int i = 0; i < verticiesArray.size(); i++) {
            verticies.put(verticiesArray.get(i));
            textCoords.put(textCoordsArray.get(i));
        }
        verticies.flip();
        textCoords.flip();
    }
    public void write(Texture texture) {    
        Color.white.bind();
        glBindTexture(GL_TEXTURE_2D, texture.getTextureID());
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

        int verticiesBufferHandle = GL15.glGenBuffers();
        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, verticiesBufferHandle);
        GL15.glBufferData(GL15.GL_ARRAY_BUFFER, verticies, GL15.GL_STATIC_DRAW);
        glVertexPointer(2, GL_FLOAT, 0, 0L);

        int textureBufferHandle = GL15.glGenBuffers();
        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, textureBufferHandle);
        GL15.glBufferData(GL15.GL_ARRAY_BUFFER, textCoords, GL15.GL_STATIC_DRAW);
        glTexCoordPointer(2, GL_FLOAT, 0, 0);

        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);

        glEnableClientState(GL_VERTEX_ARRAY);
        glEnableClientState(GL_TEXTURE_COORD_ARRAY);

        glDrawArrays(GL_QUADS, 0, verticiesArray.size());

        glDisableClientState(GL_COLOR_ARRAY);
        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    }
}

通过运行addQuad将纹理四边形添加到VBO中。之后，preWrite准备VBO渲染到屏幕并写入实际执行渲染。任何关于为何能够在OpenGL的mesa实现上工作的想法都将受到高度赞赏。

由于程序冻结，它从不在技术上崩溃，因此没有堆栈跟踪。但是，这是由LWJGL创建的错误日志：https://cdn.discordapp.com/attachments/225439941415403520/278922035550355457/hs_err_pid24149.log

LWJGL VBO与MESA图书馆崩溃游戏

0 个答案: