在 LWJGL 中带有纹理的 VBO [英] VBO with texture in LWJGL

问题描述

如何将纹理附加到 VBO?

How do I attach a texture to a VBO?

我让它与 colorBuffer 一起工作，现在我想实现一个纹理.这是我的绘制方法:

I had it working with a colorBuffer and now i want to implement a texture. This is my draw method:

Color.white.bind();
glBindTexture(GL_TEXTURE_2D, texture.getTextureID());

glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glBufferData(GL_ARRAY_BUFFER, vertexData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glBufferData(GL_ARRAY_BUFFER, textureData, GL_STATIC_DRAW);
glVertexPointer(vertexSize, GL_FLOAT, 0, 0L);




glEnableClientState(GL_VERTEX_ARRAY);
glTexCoordPointer(3, GL_FLOAT, 0, 0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);

glDrawArrays(GL_QUADS, 0, amountOfVertices);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);

那根本没有显示任何东西.纹理正确加载，我让它在立即模式下工作.我需要做些什么才能使其与 VBO 一起使用?

That doesn't display anything at all. the texture is correctly laoded and I got it working with the immediate mode. What do I have to do to make it work with VBOs ?

推荐答案

看起来纹理坐标的 VBO 在设置 texCoordPointer 时没有绑定.更改命令的顺序应该有效.此外，您正在使用单个 VBO 中的 texCoord 数据覆盖顶点.最简单的解决方案是为每个 VBO 设置两个独立的 VBO.

Looks like the VBO for the texture coordinates is not bound while setting the texCoordPointer. Changing the order of your commands should work. Also you are overriding the vertex with your texCoord data in your single VBO. Easiest solutions would be to have two separate VBOs for each.

glBindTexture(GL_TEXTURE_2D, texture.getTextureID());
// vertices
glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glBufferData(GL_ARRAY_BUFFER, vertexData, GL_STATIC_DRAW);
glVertexPointer(vertexSize, GL_FLOAT, 0, 0L);
// texCoords
glBindBuffer(GL_ARRAY_BUFFER, vboTexCoordHandle);
glBufferData(GL_ARRAY_BUFFER, textureData, GL_STATIC_DRAW);
glTexCoordPointer(3, GL_FLOAT, 0, 0);
// unbind VBO
glBindBuffer(GL_ARRAY_BUFFER, 0);

glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);

glDrawArrays(GL_QUADS, 0, amountOfVertices);

glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);

注意:通常您不希望通过为每个 VBO 多次调用 glBufferData 来在每一帧创建新的 VBO.

Note: usually you don't want to create new VBOs each frame by calling glBufferData more than once per VBO.

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