我正在使用OpenGL和顶点着色器,但屏幕上没有显示任何内容,所以我使用了glGetError来进行调试:在我的一个缓冲区color_array_buffer上出现了错误1281(无效值),以下是我要谈论的部分:
GLenum error = glGetError();
if(error) {
cout << error << endl;
return ;
} else {
cout << "no error yet" << endl;
}
//no error
// Get a handle for our "myTextureSampler" uniform
GLuint TextureID = glGetUniformLocation(shaderProgram, "myTextureSampler");
if(!TextureID)
cout << "TextureID not found ..." << endl;
// Bind our texture in Texture Unit 0
glActiveTexture(GL_TEXTURE0);
sf::Texture::bind(texture);
// Set our "myTextureSampler" sampler to user Texture Unit 0
glUniform1i(TextureID, 0);
// 2nd attribute buffer : UVs
GLuint vertexUVID = glGetAttribLocation(shaderProgram, "color");
if(!vertexUVID)
cout << "vertexUVID not found ..." << endl;
glEnableVertexAttribArray(vertexUVID);
glBindBuffer(GL_ARRAY_BUFFER, color_array_buffer);
glVertexAttribPointer(vertexUVID, 2, GL_FLOAT, GL_FALSE, 0, 0);
error = glGetError();
if(error) {
cout << error << endl;
return ;
}
//error 1281
这里是我将缓冲区链接到数组的代码:
if (textured) {
texture = new sf::Texture();
if(!texture->loadFromFile("textures/simple.jpeg"/*,sf::IntRect(0, 0, 128, 128)*/))
std::cout << "Error loading texture !!" << std::endl;
glGenBuffers(1, &color_array_buffer);
glBindBuffer(GL_ARRAY_BUFFER, color_array_buffer);
glBufferData(GL_ARRAY_BUFFER, uvs.size() * sizeof(glm::vec3), &uvs[0], GL_STATIC_DRAW);
}
我的uvs值:
uvs[0]:0.748573-0.750412
uvs[1]:0.749279-0.501284
uvs[2]:0.99911-0.501077
uvs[3]:0.999455-0.75038
uvs[4]:0.250471-0.500702
uvs[5]:0.249682-0.749677
uvs[6]:0.001085-0.75038
uvs[7]:0.001517-0.499994
uvs[8]:0.499422-0.500239
uvs[9]:0.500149-0.750166
uvs[10]:0.748355-0.99823
uvs[11]:0.500193-0.998728
uvs[12]:0.498993-0.250415
uvs[13]:0.748953-0.25092
我做错了什么吗?如果有人能帮助我,那就太好了。