static void gluPerspective(GLfloat fovy, GLfloat aspect,
GLfloat zNear, GLfloat zFar)
{
GLfloat xmin, xmax, ymin, ymax;
ymax = zNear * (GLfloat)tan(fovy * PI / 360);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
glFrustumx((GLfixed)(xmin * 65536), (GLfixed)(xmax * 65536),
(GLfixed)(ymin * 65536), (GLfixed)(ymax * 65536),
(GLfixed)(zNear * 65536), (GLfixed)(zFar * 65536));
}
void gluPerspective(GLfloat fovy, GLfloat aspect,
GLfloat zNear, GLfloat zFar)
{
GLfloat xmin, xmax, ymin, ymax;
ymax = zNear * (GLfloat)tan(fovy * PI / 360);
ymin = -ymax;
xmin = ymin * aspect;
xmax = ymax * aspect;
#ifndef GPAC_USE_GLES2
glFrustumx((GLfixed)(xmin * 65536), (GLfixed)(xmax * 65536),
(GLfixed)(ymin * 65536), (GLfixed)(ymax * 65536),
(GLfixed)(zNear * 65536), (GLfixed)(zFar * 65536));
#endif
}
//=============================================================================
//Setup GL
//@returns TRUE on success, FALSE otherwise
//=============================================================================
boolean GLApp::SetupGL()
{
//smooth shading & depth test
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
//enable lighting operations
GLfixed diffuse[] = { FTOX(1.0f), FTOX(1.0f), FTOX(1.0f), FTOX(1.0f) };
GLfixed lightPos[] = { FTOX(0.0f), FTOX(5.0f), FTOX(-5.0f) };
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);
glLightxv(GL_LIGHT0, GL_DIFFUSE, diffuse);
glLightxv(GL_LIGHT0, GL_POSITION, lightPos);
//enable blending operations
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
//enable fog operations
GLfixed fogColor[] = { 0, 0, 0, ITOX(1) };
glFogxv(GL_FOG_COLOR, fogColor);
glFogx(GL_FOG_MODE, GL_LINEAR);
glFogx(GL_FOG_START, ITOX(10));
glFogx(GL_FOG_END, ITOX(70));
//perspective Correction
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
//GL Initialization
glViewport(0, 0, m_DBitmapInfo.cx, m_DBitmapInfo.cy);
//init Projection matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustumx(ITOX(-5), ITOX(5), ITOX(-5), ITOX(5), ITOX(10), ITOX(100));
//init Model-View matrix
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
if(glGetError() != GL_NO_ERROR)
return FALSE;
return TRUE;
}
void glFrustumxLogged(GLfixed left, GLfixed right, GLfixed bottom, GLfixed top, GLfixed zNear, GLfixed zFar) {
printf("glFrustumx(%i, %i, %i, %i, %i, %i)\n", left, right, bottom, top, zNear, zFar);
glFrustumx(left, right, bottom, top, zNear, zFar);
}
