Dlaczego ta tekstura nie ładuje się poprawnie.

Question

Cześć, wie ktoś dlaczego ta tekstura nie ładuje się poprawnie? Jest powyginana? Sprawdzałem an innych i też takie są? Co może być tego przyczyną, bo nawet jak usunę macierz skalowania dalej jest tak samo. Jak to naprawić?

C++

#include <GL/glew.h>
#include <GLFW/glfw3.h>

#include <glm.hpp>
#include <gtc/matrix_transform.hpp>
#include <gtc/type_ptr.hpp>

#include <iostream>
#include <fstream>
#include <string>

#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

glm::vec3 cameraPos = glm::vec3(0.0f, 0.0f, 3.0f);
glm::vec3 cameraFront = glm::vec3(0.0f, 0.0f, -1.0f);
glm::vec3 cameraUp = glm::vec3(0.0f, 1.0f, 0.0f);

float deltaTime = 0.0f;
float lastFrame = 0.0f;
float pitch;
float yaw;
float lastX = 600, lastY = 360;
float fov = 45.0f;

bool firstMouse = false;

static unsigned int CompileShader(unsigned int type, std::string source)
{
    unsigned int id = glCreateShader(type);
    const char* src = source.c_str();
    glShaderSource(id, 1, &src, nullptr);
    glCompileShader(id);

    int result;
    glGetShaderiv(id, GL_COMPILE_STATUS, &result);
    if (result == GL_FALSE)
    {
        int length;
        glGetShaderiv(id, GL_INFO_LOG_LENGTH, &length);
        char* message = (char*)_malloca(length * sizeof(char));
        glGetShaderInfoLog(id, length, &length, message);
        std::cout << "Failed to compile " << (type == GL_VERTEX_SHADER ? "vertex" : "fragment") << "shader" << std::endl;
        std::cout << message << std::endl;
        glDeleteShader(id);

        return 0;

    }

    return id;
}

static unsigned int CreateShader(const std::string& vertexShader, const std::string fragmentShader)
{
    unsigned int program = glCreateProgram();
    unsigned int vs = CompileShader(GL_VERTEX_SHADER, vertexShader);
    unsigned int fs = CompileShader(GL_FRAGMENT_SHADER, fragmentShader);

    glAttachShader(program, vs);
    glAttachShader(program, fs);
    glLinkProgram(program);

    glDeleteShader(vs);
    glDeleteShader(fs);

    return program;
}

std::string readFromFile(const char* pathToFile)
{
    std::string content;
    std::ifstream fileStream(pathToFile, std::ios::in);

    if (!fileStream.is_open()) {
        std::cerr << "Could not read file " << pathToFile << ". File does not exist." << std::endl;
        return "";
    }

    std::string line;
    while (std::getline(fileStream, line)) {
        content.append(line + "\n");
    }

    fileStream.close();
    std::cout << content << std::endl;
    return content;
}

void processInput(GLFWwindow* window)
{

    float currentFrame = glfwGetTime();
    deltaTime = currentFrame - lastFrame;
    lastFrame = currentFrame;

    float cameraSpeed = 2.5f * deltaTime; // dopasuj do swoich potrzeb  
    if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
        cameraPos += cameraSpeed * cameraFront;
    if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
        cameraPos -= cameraSpeed * cameraFront;
    if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
        cameraPos -= glm::normalize(glm::cross(cameraFront, cameraUp)) * cameraSpeed;
    if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
        cameraPos += glm::normalize(glm::cross(cameraFront, cameraUp)) * cameraSpeed;
}

void mouse_callback(GLFWwindow* window, double xpos, double ypos)
{


    if (firstMouse) // ta zmienna bool jest początkowo ustawiona na true 
    {
        lastX = xpos;
        lastY = ypos;
        firstMouse = false;
    }

    GLfloat xoffset = xpos - lastX;
    GLfloat yoffset = lastY - ypos;
    lastX = xpos;
    lastY = ypos;

    GLfloat sensitivity = 0.05;
    xoffset *= sensitivity;
    yoffset *= sensitivity;

    yaw += xoffset;
    pitch += yoffset;

    if (pitch > 89.0f)
        pitch = 89.0f;
    if (pitch < -89.0f)
        pitch = -89.0f;

    glm::vec3 front;
    front.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));
    front.y = sin(glm::radians(pitch));
    front.z = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
    cameraFront = glm::normalize(front);

}

void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
{
    if (fov >= 1.0f && fov <= 45.0f)
        fov -= yoffset;
    if (fov <= 1.0f)
        fov = 1.0f;
    if (fov >= 45.0f)
        fov = 45.0f;
}

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(1200, 720, "Shoot The Cube!", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    /* Make the window's context current */
    glfwMakeContextCurrent(window);

    if (glewInit() != GLEW_OK)
        std::cout << "Error" << std::endl;

    std::cout << glGetString(GL_VERSION) << std::endl;
    glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
    glfwSetCursorPosCallback(window, mouse_callback);

    float vertices[] = {
        -0.5f, -0.5f, -0.5f,    0.0f, 0.0f,
         0.5f, -0.5f, -0.5f,    1.0f, 0.0f,
         0.5f,  0.5f, -0.5f,    1.0f, 1.0f,
         0.5f,  0.5f, -0.5f,    1.0f, 1.0f,
        -0.5f,  0.5f, -0.5f,    0.0f, 1.0f,
        -0.5f, -0.5f, -0.5f,    0.0f, 0.0f,

        -0.5f, -0.5f,  0.5f,    0.0f, 0.0f,
         0.5f, -0.5f,  0.5f,    1.0f, 0.0f,
         0.5f,  0.5f,  0.5f,    1.0f, 1.0f,
         0.5f,  0.5f,  0.5f,    1.0f, 1.0f,
        -0.5f,  0.5f,  0.5f,    0.0f, 1.0f,
        -0.5f, -0.5f,  0.5f,    0.0f, 0.0f,

        -0.5f,  0.5f,  0.5f,    1.0f, 0.0f,
        -0.5f,  0.5f, -0.5f,    1.0f, 1.0f,
        -0.5f, -0.5f, -0.5f,    0.0f, 1.0f,
        -0.5f, -0.5f, -0.5f,    0.0f, 1.0f,
        -0.5f, -0.5f,  0.5f,    0.0f, 0.0f,
        -0.5f,  0.5f,  0.5f,    1.0f, 0.0f,

         0.5f,  0.5f,  0.5f,    1.0f, 0.0f,
         0.5f,  0.5f, -0.5f,    1.0f, 1.0f,
         0.5f, -0.5f, -0.5f,    0.0f, 1.0f,
         0.5f, -0.5f, -0.5f,    0.0f, 1.0f,
         0.5f, -0.5f,  0.5f,    0.0f, 0.0f,
         0.5f,  0.5f,  0.5f,    1.0f, 0.0f,

        -0.5f, -0.5f, -0.5f,    0.0f, 1.0f,
         0.5f, -0.5f, -0.5f,    1.0f, 1.0f,
         0.5f, -0.5f,  0.5f,    1.0f, 0.0f,
         0.5f, -0.5f,  0.5f,    1.0f, 0.0f,
        -0.5f, -0.5f,  0.5f,    0.0f, 0.0f,
        -0.5f, -0.5f, -0.5f,    0.0f, 1.0f,

        -0.5f,  0.5f, -0.5f,    0.0f, 1.0f,
         0.5f,  0.5f, -0.5f,    1.0f, 1.0f,
         0.5f,  0.5f,  0.5f,    1.0f, 0.0f,
         0.5f,  0.5f,  0.5f,    1.0f, 0.0f,
        -0.5f,  0.5f,  0.5f,    0.0f, 0.0f,
        -0.5f,  0.5f, -0.5f,    0.0f, 1.0f
    };

    unsigned int VBO;
    glGenBuffers(1, &VBO);
    glBindBuffer(GL_ARRAY_BUFFER, VBO);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, 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);

    float hudVertices[] = {
        -1.0f,  1.0f, 0.0f,     0.0f, 0.0f,
        -1.0f, -1.0f, 0.0f,     1.0f, 0.0f,
         1.0f, 1.0f, 0.0f,      1.0f, 1.0f,
         1.0f,  1.0f, 0.0f,     1.0f, 1.0f,
         1.0f, -1.0f, 0.0f,     0.0f, 1.0f,
        -1.0f, -1.0f, 0.0f,     0.0f, 0.0f,
    };

    unsigned int CVB;
    glGenBuffers(1, &CVB);
    glBindBuffer(GL_ARRAY_BUFFER, CVB);
    glBufferData(GL_ARRAY_BUFFER, sizeof(hudVertices), hudVertices, GL_STATIC_DRAW);
    glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
    glEnableVertexAttribArray(3);

    std::string vertexShaderSource = readFromFile("vertexShader.shader");
    std::string fragmentShaderSource = readFromFile("fragmentShader.shader");
    std::string hudVertex = readFromFile("hudVertex.shader");
    std::string hudFragment = readFromFile("hudFragment.shader");
    unsigned int shaderProgram = CreateShader(vertexShaderSource, fragmentShaderSource);
    unsigned int hudShader = CreateShader(hudVertex, hudFragment);

    unsigned int bodyTex;
    glGenTextures(1, &bodyTex);
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, bodyTex);
    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);
    stbi_set_flip_vertically_on_load(true);
    int width, height, nrChannels;
    unsigned char* data = stbi_load("C:/Users/Antoni/Desktop/container.jpg", &width, &height, &nrChannels, 0);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
    glGenerateMipmap(GL_TEXTURE_2D);
    stbi_image_free(data);

    unsigned int faceTex;
    glGenTextures(1, &faceTex);
    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, faceTex);
    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);
    data = stbi_load("C:/Users/Antoni/Desktop/face.png", &width, &height, &nrChannels, 0);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
    glGenerateMipmap(GL_TEXTURE_2D);
    stbi_image_free(data);

    unsigned int crosshairTex;
    glGenTextures(1, &crosshairTex);
    glActiveTexture(GL_TEXTURE2);
    glBindTexture(GL_TEXTURE_2D, crosshairTex);
    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);
    data = stbi_load("C:/Users/Antoni/Desktop/crosshair.png", &width, &height, &nrChannels, 0);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
    glGenerateMipmap(GL_TEXTURE_2D);
    stbi_image_free(data);

    glEnable(GL_DEPTH_TEST);
    
    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glClearColor(0.2, 0.5, 1.0, 0.5);

        processInput(window);
        glfwSetScrollCallback(window, scroll_callback);

        glUseProgram(shaderProgram);
        glUniform1i(glGetUniformLocation(shaderProgram, "playerBody"), 0);
        glUniform1i(glGetUniformLocation(shaderProgram, "playerFace"), 1);
        glm::mat4 lookAt(1.0f);
        unsigned int lookAtLoc = glGetUniformLocation(shaderProgram, "lookAt");
        lookAt = glm::lookAt(cameraPos, cameraPos + cameraFront, cameraUp);
        glUniformMatrix4fv(lookAtLoc, 1, GL_FALSE, glm::value_ptr(lookAt));
        glm::mat4 projection(1.0f);
        projection = glm::perspective(glm::radians(fov), (float)1200 / (float)720, 0.1f, 100.0f);
        unsigned int projectionLoc = glGetUniformLocation(shaderProgram, "projection");
        glUniformMatrix4fv(projectionLoc, 1, GL_FALSE, glm::value_ptr(projection));
        
        glDrawArrays(GL_TRIANGLES, 0, 42);

        glUseProgram(hudShader);
        glUniform1i(glGetUniformLocation(hudShader, "crosshairTexture"), 2);
        glm::mat4 hudScaleMatrix(1.0f);
        unsigned int hudScaleLoc = glGetUniformLocation(hudShader, "hudScale");
        hudScaleMatrix = glm::scale(hudScaleMatrix, glm::vec3(0.2f, 0.2f, 0.0f));
        glUniformMatrix4fv(hudScaleLoc, 1, GL_FALSE, glm::value_ptr(hudScaleMatrix));
        glm::mat4 hudTrans(1.0f);    

        glDrawArrays(GL_TRIANGLES, 0, 42);

        /* Swap front and back buffers */
        glfwSwapBuffers(window);
        
        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}

vertex shader

#version 330 core
layout(location = 2) in vec3 aLines;
layout(location = 3) in vec2 aCross;

uniform mat4 hudScale;

out vec2 crossCrods;

void main()
{
	gl_Position = hudScale * vec4(aLines, 1.0);
	crossCrods = aCross;
}

fragment shader

#version 330 core

in vec2 crossCrods;
out vec4 colorHud;

uniform sampler2D crosshairTexture;

void main()
{
	colorHud = texture(crosshairTexture, crossCrods);
}

Comments

Przydałby się jakiś zrzut ekranu, bo tak trudno cokolwiek stwierdzić.

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@Patrycjerz, dodałem