Question

在openGL中工作，不确定为什么我的纹理没有加载。我一直在Learningopengl网站上学习，我的代码最终在大多数领域变得非常相似/复制。彻底，但我认为我缺少一些小东西。目前，我正在得到一个黑色矩形。这是我的“角色”类，因为我怀疑问题出在这里：

#include "Character.h"

#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

Character::~Character(){}

Character::Character(const char* texturePath, const char* vertShaderPath, const char* fragShaderPath)
{
    Shader shader(vertShaderPath, fragShaderPath);
    this->shader = &shader;

    float vertices[] = {
        // positions          // texture coords
         0.5f,  0.5f, 0.0f,   1.0f, 1.0f,   // top right
         0.5f, -0.5f, 0.0f,   1.0f, 0.0f,   // bottom right
        -0.5f, -0.5f, 0.0f,   0.0f, 0.0f,   // bottom left
        -0.5f,  0.5f, 0.0f,   0.0f, 1.0f    // top left 
    };

    unsigned int indices[] = {
        0, 1, 3,
        1, 2, 3
    };

    unsigned int VBO, EBO;

    glGenVertexArrays(1, &VAO);
    glGenBuffers(1, &VBO);
    glGenBuffers(1, &EBO);

    glBindVertexArray(VAO);

    glBindBuffer(GL_ARRAY_BUFFER, VBO);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);

    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);

    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
    glEnableVertexAttribArray(0);

    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
    glEnableVertexAttribArray(1);

    //

    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);
    // set the texture wrapping/filtering options (on the currently bound texture object)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    // load and generate the texture
    int width, height, nrChannels;
    stbi_set_flip_vertically_on_load(true);

    unsigned char* data = stbi_load(texturePath, &width, &height, &nrChannels, 0);

    if (data)
    {
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
        glGenerateMipmap(GL_TEXTURE_2D);
    }
    else
    {
        std::cout << "Failed to load texture" << std::endl;
    }
    stbi_image_free(data);

    this->shader->Use(); //Call before setting uniforms.
    glUniform1i(glGetUniformLocation(this->shader->ID, "texture"), 0);
}

void Character::draw()
{
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, texture);

    shader->Use();
    glBindVertexArray(VAO);
    glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
}

如果有帮助，这是我的仓库：https://github.com/PapaVinny/RogueAttempt/tree/master/RougeAttempt/RougeAttempt

为什么不加载纹理？

0 个答案: