我正在渲染一个圆柱体并将两种不同的纹理映射到顶面和底面。
两种纹理都以下列方式加载:
check3dFloorFile = new File(check3dFloorPath);
try {
check3dFloorTexture = TextureIO.newTexture(check3dFloorFile, true);
} catch (IOException | GLException ex) {
Logger.getLogger(Viewer.class.getName()).log(Level.SEVERE, null, ex);
}
check3dFloorTexture.setTexParameteri(gl, GL2.GL_TEXTURE_MIN_FILTER,
GL2.GL_LINEAR_MIPMAP_LINEAR);
check3dFloorTexture.setTexParameteri(gl, GL2.GL_TEXTURE_MAG_FILTER,
GL2.GL_LINEAR);
check3dFloorBackFile = new File(check3dFloorBackPath);
try {
check3dFloorBackTexture = TextureIO.newTexture(check3dFloorBackFile, true);
} catch (IOException | GLException ex) {
Logger.getLogger(Viewer.class.getName()).log(Level.SEVERE, null, ex);
}
check3dFloorBackTexture.setTexParameteri(gl, GL2.GL_TEXTURE_MIN_FILTER,
GL2.GL_LINEAR_MIPMAP_LINEAR);
check3dFloorBackTexture.setTexParameteri(gl, GL2.GL_TEXTURE_MAG_FILTER,
GL2.GL_LINEAR);
当我尝试渲染纹理时出现问题(一个空白的,与前两个无关):
gl.glGenTextures(1, textureID, 0);
gl.glBindTexture(GL2.GL_TEXTURE_2D, textureID[0]);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_S, GL2.GL_REPEAT);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_T, GL2.GL_REPEAT);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST);
gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST);
// null means reserve texture memory, but texels are undefined
gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, GL2.GL_RGB, floorWidth, floorHeight,
0, GL2.GL_RGB, GL2.GL_FLOAT, null);
gl.glGenFramebuffers(1, frameBufferID, 0);
gl.glBindFramebuffer(GL2.GL_FRAMEBUFFER, frameBufferID[0]);
//Attach 2D texture to this FBO
gl.glFramebufferTexture2D(GL2.GL_FRAMEBUFFER, GL2.GL_COLOR_ATTACHMENT0,
GL2.GL_TEXTURE_2D, textureID[0], 0);
// depth buffer
//int[] depthRenderBufferID = new int[1];
gl.glGenRenderbuffers(1, depthRenderBufferID, 0);
gl.glBindRenderbuffer(GL2.GL_RENDERBUFFER, depthRenderBufferID[0]);
gl.glRenderbufferStorage(GL2.GL_RENDERBUFFER, GL2.GL_DEPTH_COMPONENT,
floorWidth, floorHeight);
gl.glFramebufferRenderbuffer(GL2.GL_FRAMEBUFFER, GL2.GL_DEPTH_ATTACHMENT,
GL2.GL_RENDERBUFFER, depthRenderBufferID[0]);
if(gl.glCheckFramebufferStatus(GL2.GL_FRAMEBUFFER) == GL2.GL_FRAMEBUFFER_COMPLETE)
System.out.println("[Viewer] GL_FRAMEBUFFER_COMPLETE!!");
else
System.out.println("..cazzo ^^");
执行此代码后,映射在圆柱体顶部的纹理消失了,所有顶部都变为黑色......
为什么?
Ps:我的任务是将第三个渲染纹理映射到圆柱体顶部,覆盖已经存在的纹理..