TEST( Clock, tick )
{
Clock c;
EXPECT_EQ( 0, c.getDeltaTime() );
EXPECT_EQ( 0, c.getAccumTime() );
std::this_thread::sleep_for( std::chrono::milliseconds( 16 ) );
c.tick();
EXPECT_LE( 0.016, c.getDeltaTime() );
EXPECT_LE( 0.016, c.getAccumTime() );
std::this_thread::sleep_for( std::chrono::milliseconds( 16 ) );
c.tick();
EXPECT_LE( 0.016, c.getDeltaTime() );
EXPECT_LE( 0.032, c.getAccumTime() );
std::this_thread::sleep_for( std::chrono::milliseconds( 16 ) );
c.tick();
EXPECT_LE( 0.016, c.getDeltaTime() );
EXPECT_LE( 0.048, c.getAccumTime() );
}
TEST( Clock, construction )
{
Clock c;
EXPECT_EQ( 0, c.getDeltaTime() );
EXPECT_EQ( 0, c.getAccumTime() );
}
void runCollisionDetection ()
{
static Clock ck ;
ck.update () ;
double tall=ck.getDeltaTime () ;
static int firsttime = true ;
static unsigned int query = 0 ;
FrameBufferObject *tmp ;
FrameBufferObject *SCM = old ;
FrameBufferObject *DCM = collisions ;
unsigned int numHits ;
if ( firsttime )
{
glGenQueriesARB ( 1, (GLuint*) & query ) ;
firsttime = false ;
}
/* Fill SCM with big numbers */
glClearColor ( 1.0f, 1.0f, 1.0f, 1.0f ) ;
SCM -> prepare ( true ) ;
glClearColor ( 0.0f, 0.0f, 0.0f, 0.0f ) ;
force -> prepare ( true ) ; /* Zero out all of the forces. */
int numPasses = 0 ;
glPushClientAttrib ( GL_CLIENT_VERTEX_ARRAY_BIT ) ;
glClientActiveTexture( GL_TEXTURE1 ) ;
glEnableClientState ( GL_TEXTURE_COORD_ARRAY ) ;
glBindBufferARB ( GL_ARRAY_BUFFER_ARB, vbo_collt1 ) ;
glTexCoordPointer ( 2, GL_FLOAT, 0, vbo_collt1 ? NULL : colltexcoords1 ) ;
glClientActiveTexture( GL_TEXTURE0 ) ;
glEnableClientState ( GL_TEXTURE_COORD_ARRAY ) ;
glBindBufferARB ( GL_ARRAY_BUFFER_ARB, vbo_collt0 ) ;
glTexCoordPointer ( 2, GL_FLOAT, 0, vbo_collt0 ? NULL : colltexcoords0 ) ;
glEnableClientState ( GL_VERTEX_ARRAY ) ;
glBindBufferARB ( GL_ARRAY_BUFFER_ARB, vbo_collvx ) ;
glVertexPointer ( 3, GL_FLOAT, 0, vbo_collvx ? NULL : collvertices ) ;
while ( true )
{
collisionGenerator -> use () ;
collisionGenerator -> applyTexture ( "position" , position, 0 ) ;
collisionGenerator -> applyTexture ( "old_collisions", SCM , 1 ) ;
/* Fill DCM with zeroes */
DCM -> prepare ( true ) ;
glBeginQueryARB ( GL_SAMPLES_PASSED_ARB, query ) ;
glMultiDrawArraysEXT ( GL_QUADS, (GLint*)& collstart, (GLint*)& colllength,
1 ) ;
numPasses++ ;
glEndQueryARB ( GL_SAMPLES_PASSED_ARB ) ;
forceGenerator -> use () ;
forceGenerator -> applyTexture ( "position" , position , 0 ) ;
forceGenerator -> applyTexture ( "force" , force , 1 ) ;
forceGenerator -> applyTexture ( "collisions", DCM , 2 ) ;
GLuint sampleCount ;
glGetQueryObjectuivARB ( query, GL_QUERY_RESULT_ARB, &sampleCount ) ;
//fprintf ( stderr, "%d ", sampleCount ) ;
if ( sampleCount == 0 )
break ;
new_force -> paint () ;
tmp = new_force ;
new_force = force ;
force = tmp ;
tmp = DCM ;
DCM = SCM ;
SCM = tmp ;
}
glBindBufferARB ( GL_ARRAY_BUFFER_ARB, 0 ) ;
glPopClientAttrib () ;
ck.update () ;
double tdone=ck.getDeltaTime () ;
static int ii = 0 ;
ii++;
if (ii%100==0)
fprintf ( stderr, "Performance: %d passes %d cubes: other=%fms collisions=%fms\n", numPasses, NUM_CUBES, tall*1000.0, tdone*1000.0 ) ;
}