ported the University CGI demo from WINDOWS + GLUT + GLEW + GLU + OpenGL 4 to LINUX WAYLAND + EGL + GLES 2 with minimal cuts

GL_STUFF/SOURCES/EFFECTS/Scene.cpp

@@ -0,0 +1,56 @@
+#include "../../HEADERS/EFFECTS/Scene.h"
+
+extern "C" {
+#include "../../GLES_3_1_compatibility.h"
+}
+
+/* REPLACED
+#include <GL/freeglut.h>
+*/
+#include <glut.h>
+
+
+
+#include <glm/gtc/matrix_transform.hpp>
+#include <string>
+#include <iostream>
+
+using namespace glm;
+
+Scene::Scene(int left, int top, int width, int height)
+	: PseudoContext { left, top, width, height }
+{
+	glGenFramebuffers(1, &FBO);
+	glGenRenderbuffers(1, &depthRBO);
+	glBindRenderbuffer(GL_RENDERBUFFER, depthRBO);
+	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
+	glBindRenderbuffer(GL_RENDERBUFFER, 0);
+}
+
+void Scene::draw() {
+	glBindFramebuffer(GL_FRAMEBUFFER, FBO);
+	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, outputTexture, 0);
+	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthRBO);
+	GLenum DrawBuffers[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
+	glDrawBuffers(2, DrawBuffers);
+}
+
+void Scene::setOutTexture(GLuint outTexture) {
+	outputTexture = outTexture;
+}
+
+void Scene::keyPress(unsigned char key, int x, int y) {
+	switch (key)
+	{
+	case 27:
+		exit(0);
+		break;
+
+	default:
+		break;
+	}
+}
+
+GLuint Scene::getFrameBuffer() {
+	return this->FBO;
+}