From a8609ccd901b1942e862c14205026d841e640add Mon Sep 17 00:00:00 2001
From: EliteTK <tomasz.kramkowski@gmail.com>
Date: Thu, 10 Jul 2014 22:35:35 +0100
Subject: More stuff.

---
 lighthouse3dglex.c | 221 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 221 insertions(+)
 create mode 100644 lighthouse3dglex.c

(limited to 'lighthouse3dglex.c')

diff --git a/lighthouse3dglex.c b/lighthouse3dglex.c
new file mode 100644
index 0000000..08cff1a
--- /dev/null
+++ b/lighthouse3dglex.c
@@ -0,0 +1,221 @@
+
+/*
+  Simple Demo for GLSL
+  www.lighthouse3d.com
+  
+  tweaked a bit by andy
+*/
+
+#include "GL/glew.h"
+
+#ifdef __linux__
+#include <GL/glut.h>
+#endif
+
+#ifdef __APPLE__
+#include <glut.h>
+#endif
+
+#ifdef _WIN32
+#include "glut.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+///////////////////////////////////////////////////////////////////////
+
+char *textFileRead(char *fn)
+{
+	FILE *fp;
+	char *content = NULL;
+
+	int count=0;
+
+	if (fn != NULL) {
+		fp = fopen(fn,"rt");
+
+		if (fp != NULL) {
+      
+      fseek(fp, 0, SEEK_END);
+      count = ftell(fp);
+      rewind(fp);
+
+			if (count > 0) {
+				content = (char *)malloc(sizeof(char) * (count+1));
+				count = fread(content,sizeof(char),count,fp);
+				content[count] = '\0';
+			}
+			fclose(fp);
+		}
+	}
+	
+	if (content == NULL)
+	   {
+	   fprintf(stderr, "ERROR: could not load in file %s\n", fn);
+	   exit(1);
+	   }
+	return content;
+}
+
+///////////////////////////////////////////////////////////////////////           
+
+int textFileWrite(char *fn, char *s)
+{
+        FILE *fp;
+        int status = 0;
+
+        if (fn != NULL) {
+                fp = fopen(fn,"w");
+
+                if (fp != NULL) {
+                        
+                        if (fwrite(s,sizeof(char),strlen(s),fp) == strlen(s))
+                                status = 1;
+                        fclose(fp);
+                }
+        }
+        return(status);
+}   
+
+///////////////////////////////////////////////////////////////////////
+
+GLuint v,f,p;
+float lpos[4] = {1.0, 0.5, 1.0, 0.0};
+
+///////////////////////////////////////////////////////////////////////
+
+void changeSize(int w, int h)
+{
+	// Prevent a divide by zero, when window is too short
+	// (you cant make a window of zero width).
+	if(h == 0)
+		h = 1;
+
+	float ratio = 1.0* w / h;
+
+	// Reset the coordinate system before modifying
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	
+	// Set the viewport to be the entire window
+    glViewport(0, 0, w, h);
+
+	// Set the correct perspective.
+	gluPerspective(45, ratio, 1, 1000);
+	glMatrixMode(GL_MODELVIEW);
+}
+
+///////////////////////////////////////////////////////////////////////
+
+void renderScene(void)
+{
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	glLoadIdentity();
+	gluLookAt(0.0,0.0,5.0, 
+		      0.0,0.0,-1.0,
+			  0.0f,1.0f,0.0f);
+
+	glLightfv(GL_LIGHT0, GL_POSITION, lpos);
+	glutSolidTeapot(1);
+
+	glutSwapBuffers();
+}
+
+///////////////////////////////////////////////////////////////////////
+
+void processNormalKeys(unsigned char key, int x, int y) {
+
+	if (key == 27) 
+		exit(0);
+}
+
+///////////////////////////////////////////////////////////////////////
+
+void setShaders()
+{
+	char *vs,*fs;
+
+	v = glCreateShader(GL_VERTEX_SHADER);
+	f = glCreateShader(GL_FRAGMENT_SHADER);
+
+    // older syntax
+	//v = glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB);
+	//f = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);
+
+	vs = textFileRead("./toon.vert");
+	fs = textFileRead("./toon.frag");
+
+	const char * ff = fs;
+	const char * vv = vs;
+
+	glShaderSource(v, 1, &vv,NULL);
+	glShaderSource(f, 1, &ff,NULL);
+
+    // older syntax
+	//glShaderSourceARB(v, 1, &vv,NULL);
+	//glShaderSourceARB(f, 1, &ff,NULL);
+
+	free(vs);free(fs);
+
+	glCompileShader(v);
+	glCompileShader(f);
+
+    // older syntax
+	//glCompileShaderARB(v);
+	//glCompileShaderARB(f);
+
+	p = glCreateProgram();
+
+    // older syntax
+	//p = glCreateProgramObjectARB();
+
+	glAttachShader(p,f);
+	glAttachShader(p,v);
+	
+    // older syntax
+	//glAttachObjectARB(p,f);
+	//glAttachObjectARB(p,v);
+
+	glLinkProgram(p);
+	
+	// comment out this line to not use the shader
+	glUseProgram(p);
+
+    // older syntax
+	//glLinkProgramARB(p);
+	//glUseProgramObjectARB(p);
+}
+
+///////////////////////////////////////////////////////////////////////
+
+int main(int argc, char **argv) {
+	glutInit(&argc, argv);
+	glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
+	glutInitWindowPosition(100,100);
+	glutInitWindowSize(320,320);
+	glutCreateWindow("GLSL");
+
+	glutDisplayFunc(renderScene);
+	glutIdleFunc(renderScene);
+	glutReshapeFunc(changeSize);
+	glutKeyboardFunc(processNormalKeys);
+
+	glEnable(GL_DEPTH_TEST);
+	glClearColor(0.0,0.0,0.0,1.0);
+
+	glewInit();
+	if (GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader)
+		printf("Ready for GLSL\n");
+	else {
+		printf("No GLSL support\n");
+		exit(1);
+	}
+
+	setShaders();
+
+	glutMainLoop();
+	return 0;
+}
-- 
cgit v1.2.3-54-g00ecf