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#include <stdio.h>
#include <string.h>
#include <GLFW/glfw3.h>
#include "typedef.h"
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
static void error_callback(int error, const char* description)
{
err("display: %s\n", description);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GLFW_TRUE);
}
extern unsigned char cam_data[];
extern unsigned int WIDTH;
extern unsigned int HEIGHT;
GLubyte pixels[BUF_CAP] = {0};
void pixel(int x, int y)
{
// for rotating the screen
int p = (y*WIDTH + x)*3;
int b = ((HEIGHT-1-y)*WIDTH+x)*3;
pixels[p+0] = cam_data[b+0];
pixels[p+1] = cam_data[b+1];
pixels[p+2] = cam_data[b+2];
}
int display(void)
{
GLFWwindow* window;
glfwSetErrorCallback(error_callback);
if (!glfwInit()) {
return 1;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(WIDTH, HEIGHT, "Client", NULL, NULL);
if (!window) {
glfwTerminate();
return 1;
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
while (!glfwWindowShouldClose(window))
{
glfwSetWindowSize(window, WIDTH, HEIGHT);
for(int i = 0; i < HEIGHT; i++)
for(int j = 0; j < WIDTH; j++)
pixel(j, i);
glClear(GL_COLOR_BUFFER_BIT);
glDrawPixels(WIDTH, HEIGHT, GL_RGB, GL_UNSIGNED_BYTE, pixels);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}
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