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

GL_STUFF/HEADERS/EFFECTS/TexMerger.h

@@ -0,0 +1,38 @@
+#ifndef TEXMERGER_H
+#define TEXMERGER_H
+/*
+#include <GL/glew.h>
+*/
+#include <GLES2/gl2.h>
+#include <vector>
+
+
+class TexMerger {
+private:
+	GLuint program;
+	GLuint* mergeBuffers;
+	std::vector<bool> usageMap;
+	GLuint FBO;
+	GLuint quadVAO, vertVBO;
+	GLuint shaderTex1Id, shaderTex2Id;
+	int bufCount;
+	GLuint reserveBuffer();
+	bool isBuffer(GLuint number);
+	void freeBuffer(GLuint number);
+	GLfloat quadVerts[18] = {
+		-1.0f, -1.0f, -1.0f,
+		1.0f, -1.0f, -1.0f,
+		-1.0f, 1.0f, -1.0f,
+		-1.0f, 1.0f, -1.0f,
+		1.0f, -1.0f, -1.0f,
+		1.0f, 1.0f, -1.0f
+	};
+
+
+public:
+	TexMerger(GLuint texCount, unsigned int texWidth, unsigned int texHeight);
+	GLuint merge(std::vector<GLuint> inTextures, int startIndex, int endIndex);
+};
+#endif // !TEXMERGER_H
+
+