Python Opengl 不渲染纹理

我正在try 在OpenGL中渲染纹理.但是，纹理是完全黑色的.

纹理渲染在由2个三角形组成的屏幕大小的四边形上.三角形使用三角形扇形模式进行渲染.

如果有人能指出我代码中的问题，那将是非常有帮助的.

创建纹理:

 texture = gl.glGenTextures(1)
    gl.glActiveTexture(gl.GL_TEXTURE0)
    gl.glBindTexture(gl.GL_TEXTURE_2D, texture)

    gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
    gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_NEAREST)
    gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_REPEAT);
    gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_REPEAT);

    viewport = gl.glGetIntegerv(gl.GL_VIEWPORT)
    width = viewport[2]
    height = viewport[3]
    
    print(width, height)
    image = Image.open("./madeline.jpg").convert('RGB')
    data = np.array(image).flatten()


    #gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, width, height, 0, gl.GL_RGB, gl.GL_FLOAT, None)
    gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, 1920, 1080, 0, gl.GL_RGB, gl.GL_UNSIGNED_INT, data)
    gl.glBindTexture(gl.GL_TEXTURE_2D, texture)

顶点数据:

# vertex -> x, y, z, u, v
vertices = [

    -1, 1, 0, 0, 1,   # top-left
    1, 1, 0, 1, 1,   # top-right
    1, -1, 0, 1, 0,  # bottom-right
    -1, -1, 0, 0, 0  # bottom-left

    ]

设置缓冲区:

 # setup buffers
    vao = gl.glGenVertexArrays(1)
    vbo = gl.glGenBuffers(1)

    gl.glBindVertexArray(vao)

    gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
    gl.glBufferData(gl.GL_ARRAY_BUFFER, len(vertices) * floatSize, np.array(vertices, dtype="float32"), gl.GL_STATIC_DRAW)
    
    
    gl.glVertexAttribPointer(0, 3, gl.GL_FLOAT, gl.GL_FALSE, 5 * floatSize, None)
    gl.glVertexAttribPointer(1, 2, gl.GL_FLOAT, gl.GL_FALSE, 5 * floatSize, 3 * floatSize)
    gl.glEnableVertexAttribArray(0)
    gl.glEnableVertexAttribArray(1)

    gl.glBindVertexArray(vao)

顶点明暗器:

#version 430 core
layout (location = 0) in vec3 aPos;
layout (location = 1) in vec2 texCoord;

out vec2 tex;

void main() {

    gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
    tex = texCoord;
}

片段着色器:

#version 430 core


out vec4 fragColour;
in vec2 tex;

uniform sampler2D ourTex;

void main(){

    fragColour = texture(ourTex, tex);
}

主循环:

while not glfwWindowShouldClose(window):
        gl.glClearColor(0.2, 0.3, 0.3, 1.0)
        gl.glClear(gl.GL_COLOR_BUFFER_BIT)
    
    
        #gl.glDrawElements(gl.GL_TRIANGLES, 6, gl.GL_UNSIGNED_INT, 0)
        gl.glDrawArrays(gl.GL_TRIANGLE_FAN, 0, 4)

        glfwSwapBuffers(window)
        glfwPollEvents()

代码:https://github.com/RandomPigYT/raytracer