我正在使用版本4.6制作OpenGL程序,但是当我编写纹理代码并运行程序时,glfwSwapBuffers()中发生了以下错误:在Project1.exe中的0x00007FFCCD631970(nvoglv64.dll)处引发了异常:数据类型:阅读位置0x0000000000000000时发生访问冲突。
下面是我的代码:
# include"shader.h"
# include"texture.h"
# include<glad/glad.h>
# include<GLFW/glfw3.h>
# include<iostream>
int main(){
if (glfwInit() == GLFW_FALSE) {
std::cout << "Failed to initialize GLFW" << std::endl;
return -1;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow* window = glfwCreateWindow(1280, 800, "What a TD", nullptr, nullptr);
if (window == nullptr) {
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
if (gladLoadGL() != 1) {
std::cout << "Failed to load GLAD" << std::endl;
return -1;
}
glViewport(0, 0, 1280, 800);
GLfloat vertices[] = {
-0.5f, -0.5f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f
};
GLuint indices[] = {
0, 1, 2,
2, 3, 0
};
GLuint vbo, vao, 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);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (void*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (void*)(6 * sizeof(GLfloat)));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
texture tex0("planks.png", 0);
shader Shader("default.vs", "default.fs");
//main loop
while (!glfwWindowShouldClose(window))
{
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
Shader.use();
tex0.active();
glBindVertexArray(vao);
glDrawElements(GL_TRIANGLES, sizeof(indices) / sizeof(GLuint), GL_UNSIGNED_INT, 0);
glfwSwapBuffers(window); // Access violation
glfwPollEvents();
}
...
}
顶点着色器:
# version 460 core
layout (location = 0) in vec3 aPos;
layout (location = 1) in vec3 aColor;
layout (location = 2) in vec2 aTexCoord;
out vec3 Color;
out vec2 texCoord;
void main() {
gl_Position = vec4(aPos, 1.0f);
Color = aColor;
texCoord = aTexCoord;
}
片段着色器:
# version 460 core
in vec3 Color;
in vec2 texCoord;
out vec4 fragColor;
uniform sampler2D tex0;
void main() {
fragColor = texture(tex0, texCoord);
}
纹理. h:
# ifndef GL_TEXTURE_H
# define GL_TEXTURE_H
# include<glad/glad.h>
# include<GLFW/glfw3.h>
# include<stb/stb_image.h> //STB_IMAGE_IMPLEMENTATION defined in other file
# include<iostream>
class texture {
private:
GLuint ID;
GLuint unit;
public:
texture(const char* image, GLuint unit) {
stbi_set_flip_vertically_on_load(true);
this->unit = unit;
glGenTextures(1, &ID);
glActiveTexture(GL_TEXTURE0 + unit);
glBindTexture(GL_TEXTURE_2D, ID);
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_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
int width, height, channels;
unsigned char* data = stbi_load(image, &width, &height, &channels, 0);
if (data) {
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
}
else {
std::cout << image << " : " << "Failed to load image" << std::endl;
}
glGenerateMipmap(GL_TEXTURE_2D);
stbi_image_free(data);
glBindTexture(GL_TEXTURE_2D, 0);
}
void active() {
glActiveTexture(GL_TEXTURE0 + unit);
glBindTexture(GL_TEXTURE_2D, ID);
}
};
# endif
如何解决此问题?
1条答案
按热度按时间s3fp2yjn1#
索引缓冲区(
ELEMENT_ARRAY_BUFFER
)绑定存储在顶点数组对象中。当调用glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, IBO)
时,元素缓冲区对象ID存储在当前绑定的顶点数组对象中。当绑定 VAO 时调用
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
会破坏该绑定,索引缓冲区不再绑定到VAO。删除这行代码,您根本不需要它。glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
与索引缓冲区不同,顶点缓冲区绑定(
ARRAY_BUFFER
)是一个全局状态。VAO状态向量中所述的每个属性可以指不同的
ARRAY_BUFFER
。当调用glVertexAttribPointer
时,当前绑定到目标ARRAY_BUFFER
的缓冲器与指定的属性索引相关联,并且对象的ID存储在当前绑定的VAO的状态向量中。因此,调用glBindBuffer(GL_ARRAY_BUFFER, 0);
没有问题