forked from KolibriOS/kolibrios
114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
#define EGL_EGLEXT_PROTOTYPES
|
||
|
|
#include "EGL/egl.h"
|
||
|
|
#include "EGL/eglext.h"
|
||
|
|
#include "GL/gl.h"
|
||
|
|
#include "gbm.h"
|
||
|
|
#include <kos32sys.h>
|
||
|
|
|
||
|
|
#include "eglut.h"
|
||
|
|
|
||
|
|
GLint list;
|
||
|
|
|
||
|
|
static void init(void)
|
||
|
|
{
|
||
|
|
// fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
|
||
|
|
// fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
|
||
|
|
// fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
|
||
|
|
// fflush(stderr);
|
||
|
|
|
||
|
|
list = glGenLists(1);
|
||
|
|
glNewList(list, GL_COMPILE);
|
||
|
|
|
||
|
|
/* XXX: this state-change will only be executed if list is called
|
||
|
|
* from outside a begin/end pair:
|
||
|
|
*/
|
||
|
|
glShadeModel( GL_FLAT );
|
||
|
|
glBegin(GL_TRIANGLES);
|
||
|
|
glColor3f(0,0,0.7);
|
||
|
|
glVertex3f( -0.9, 0.9, -30.0);
|
||
|
|
glColor3f(0,0.9,0);
|
||
|
|
glVertex3f( -0.9, -0.9, -30.0);
|
||
|
|
glColor3f(0.8,0,0);
|
||
|
|
glVertex3f( 0.9, 0.0, -30.0);
|
||
|
|
glEnd();
|
||
|
|
|
||
|
|
glEndList();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
idle(void)
|
||
|
|
{
|
||
|
|
eglutPostRedisplay();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void reshape(int width, int height)
|
||
|
|
{
|
||
|
|
asm volatile ("int3");
|
||
|
|
/*
|
||
|
|
glViewport(0, 0, (GLint)width, (GLint)height);
|
||
|
|
|
||
|
|
glMatrixMode(GL_PROJECTION);
|
||
|
|
glLoadIdentity();
|
||
|
|
glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 100.0);
|
||
|
|
glMatrixMode(GL_MODELVIEW);
|
||
|
|
glLoadIdentity();
|
||
|
|
*/
|
||
|
|
glViewport(0, 0, (GLint) width, (GLint) height);
|
||
|
|
|
||
|
|
GLfloat h = (GLfloat) height / (GLfloat) width;
|
||
|
|
|
||
|
|
glMatrixMode(GL_PROJECTION);
|
||
|
|
glLoadIdentity();
|
||
|
|
glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
|
||
|
|
|
||
|
|
glMatrixMode(GL_MODELVIEW);
|
||
|
|
glLoadIdentity();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void draw(void)
|
||
|
|
{
|
||
|
|
asm volatile ("int3");
|
||
|
|
|
||
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
||
|
|
|
||
|
|
glShadeModel( GL_SMOOTH );
|
||
|
|
|
||
|
|
glBegin(GL_TRIANGLES);
|
||
|
|
|
||
|
|
/* Note: call the list from inside a begin/end pair. The end is
|
||
|
|
* provided by the display list...
|
||
|
|
*/
|
||
|
|
glCallList(list);
|
||
|
|
|
||
|
|
// glFlush();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
main(int argc, char *argv[])
|
||
|
|
{
|
||
|
|
eglutInitWindowSize(384, 384);
|
||
|
|
eglutInitAPIMask(EGLUT_OPENGL_BIT);
|
||
|
|
eglutInit(argc, argv);
|
||
|
|
|
||
|
|
eglutCreateWindow("gl-render");
|
||
|
|
|
||
|
|
eglutIdleFunc(idle);
|
||
|
|
eglutReshapeFunc(reshape);
|
||
|
|
eglutDisplayFunc(draw);
|
||
|
|
|
||
|
|
glClearColor( 0, 0, 0, 1.0);
|
||
|
|
|
||
|
|
init();
|
||
|
|
glDrawBuffer(GL_BACK);
|
||
|
|
|
||
|
|
eglutMainLoop();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|