Hi all,
Finally I could set the Visual Studio 2017 for OpenGL.
I created an Empty Project named opengl. Then tested this code on it.
The output is two windows as in here.
Is it fine that the Visual Studio shows two windows for this project? I mean, is my result the same as yours?
Then I pasted this code this time into the project. The output is this.
It seems that everything is OK.
Since I’m reading the book “OpenGL.Programming.Guide.9th.Edition” and in page 40, it offers a first code named Example1.1 with this code:
#include <iostream>
using namespace std;
#include "vgl.h"
#include "LoadShaders.h"
enum VAO_IDs { Triangles, NumVAOs };
enum Buffer_IDs { ArrayBuffer, NumBuffers };
enum Attrib_IDs { vPosition = 0 };
GLuint VAOs[NumVAOs];
GLuint Buffers[NumBuffers];
const GLuint NumVertices = 6;
//--------------------------------------------------------------------
//
// init
//
void
init(void)
{
static const GLfloat vertices[NumVertices][2] =
{
{ -0.90, -0.90 }, // Triangle 1
{ 0.85, -0.90 },
{ -0.90, 0.85 },
{ 0.90, -0.85 }, // Triangle 2
{ 0.90, 0.90 },
{ -0.85, 0.90 }
};
glCreateBuffers(NumBuffers, Buffers);
glNamedBufferStorage(Buffers[ArrayBuffer], sizeof(vertices),
vertices, 0);
ShaderInfo shaders[] = {
{ GL_VERTEX_SHADER, "triangles.vert" },
{ GL_FRAGMENT_SHADER, "triangles.frag" },
{ GL_NONE, NULL }
};
GLuint program = LoadShaders(shaders);
glUseProgram(program);
glGenVertexArrays(NumVAOs, VAOs);
glBindVertexArray(VAOs[Triangles]);
glBindBuffer(GL_ARRAY_BUFFER, Buffers[ArrayBuffer]);
glVertexAttribPointer(vPosition, 2, GL_FLOAT,
GL_FALSE, 0, BUFFER_OFFSET(0));
glEnableVertexAttribArray(vPosition);
}
//--------------------------------------------------------------------
//
// display
//
void
display(void)
{
static const float black[] = { 0.0f, 0.0f, 0.0f, 0.0f };
glClearBufferfv(GL_COLOR, 0, black);
glBindVertexArray(VAOs[Triangles]);
glDrawArrays(GL_TRIANGLES, 0, NumVertices);
}
//--------------------------------------------------------------------
//
// main
//
int
main(int argc, char** argv)
{
glfwInit();
GLFWwindow* window = glfwCreateWindow(640, 480, "Triangles", NULL,
NULL);
glfwMakeContextCurrent(window);
gl3wInit();
init();
while (!glfwWindowShouldClose(window))
{
display();
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
}
so this time, I pasted this code to the project. It shows no red lines but when I runt it, I get these 13 errors:
https://s1.postimg.org/6yp2zukgcf/Capture.png
Why do I get these errors for this specific code and how to solve it please?
