static void Matrix4x4Mult(benchmark::State& state) {
Transform xf1 = makeRotation(0.3, Vector4(0.2, 0.3, 0.4));
Transform xf2 = makeRotation(0.6, Vector4(0.9, 0.2, 0.1));
for (auto _ : state) {
benchmark::DoNotOptimize(mult(xf1.fwd, xf2.fwd));
}
}
static void Matrix4x4Vector4Mult(benchmark::State& state) {
Transform xf = makeRotation(0.3, Vector4(0.2, 0.3, 0.4));
Vector4 v(2.0, 4.0, 0.3);
for (auto _ : state) {
benchmark::DoNotOptimize(mult(xf.fwd, v));
}
}
void TestScene::setup()
{
logger.normalf("Creating image tracer %d x %d, %d frames, %d rays per pixel",
image_width, image_height, anim_frames, rays_per_pixel);
logger.normalf("Output directory: %s", output_dir.c_str());
tracer = new ImageTracer( image_width, image_height,
anim_frames, rays_per_pixel );
#if 0
// Create a subdirectory in the output directory named with the test name, and put standard
// output files in there
tracer->artifacts.output_path = output_dir + "/" + name;
mkdir(tracer->artifacts.output_path.c_str(), 0777);
tracer->artifacts.file_prefix = "";
#else
// Prefix each output file with the test name and put them in the output directory
tracer->artifacts.output_path = output_dir;
tracer->artifacts.file_prefix = name + "_";
#endif
tracer->shader = new BasicDiffuseSpecularShader();
tracer->setCameraTransform( compose(
// move up a bit
makeTranslation( 0.0, 0.5, 0.0 ),
// rotate so we are looking down
makeRotation( -0.2, Vector4(1, 0, 0) ),
// back away from the origin
makeTranslation( 0.0, 0.0, 10.0 )
) );
}
void addTransformedCubes( std::shared_ptr<Container> container )
{
// Offset cubes for testing AO
float cube_size = 0.2;
auto cube1 = std::make_shared<AxisAlignedSlab>( 0.0, 0.0, 0.0,
cube_size );
auto cube2 = std::make_shared<AxisAlignedSlab>( 0.0, 0.0, 0.0,
cube_size );
auto cube3 = std::make_shared<AxisAlignedSlab>( 0.0, 0.0, 0.0,
cube_size );
cube1->material = std::make_shared<DiffuseMaterial>( 1.0, 0.0, 0.0 );
cube2->material = std::make_shared<DiffuseMaterial>( 0.0, 0.0, 1.0 );
cube3->material = std::make_shared<DiffuseMaterial>( 0.0, 1.0, 0.0 );
cube1->transform = std::make_shared<Transform>();
*cube1->transform = makeTranslation( Vector4( 0.1, 0.5, -1.0 ) );
cube2->transform = std::make_shared<Transform>();
*cube2->transform =
compose(
makeTranslation( Vector4( 0.0, 0.15, -1.0 ) ),
compose(
makeRotation( M_PI / 4.0, Vector4( 0.0, 1.0, 0.0 ) ),
makeRotation( M_PI / 4.0, Vector4( 0.0, 0.0, 1.0 ) )
)
);
cube3->transform = std::make_shared<Transform>();
*cube3->transform =
compose(
makeTranslation( Vector4( -0.3, 0.0, -1.0 ) ),
makeScaling( 0.2, 3.0, 2.0 )
);
container->add( cube1 );
container->add( cube2 );
container->add( cube3 );
addSphereLight( container,
Vector4( 3.0, 3.0, -1.0 ), 0.5,
RGBColor( 1.0, 1.0, 1.0 ), 200.0 );
addGroundPlane( container );
}
void testCosineHalfSphere()
{
Plot2D plot_down_z( output_path + "/cosine_half_sphere__down_z.png", plot_size, plot_size );
Plot2D plot_down_y( output_path + "/cosine_half_sphere__down_y.png", plot_size, plot_size );
Plot2D plot_rot( output_path + "/cosine_half_sphere__rot.png", plot_size, plot_size );
Transform xform = makeRotation( 0.5, Vector4( 1.0f, 1.0f, 1.0f ) );
Vector4 v, rot;
for( auto i = 0; i < points_per_plot; i++ ) {
rng.cosineUnitHalfSphere( v );
plot_down_z.addPoint( v.x, v.y );
plot_down_y.addPoint( v.x, v.z );
rot = mult( xform.fwd, v );
plot_rot.addPoint( rot.x, rot.y );
}
}
void TestScene::setup()
{
tracer = new ImageTracer( image_width, image_height,
anim_frames, rays_per_pixel );
tracer->artifacts.output_path = output_dir;
tracer->artifacts.file_prefix = name + "_";
tracer->shader = new BasicDiffuseSpecularShader();
tracer->setCameraTransform( compose(
// move up a bit
makeTranslation( 0.0, 0.5, 0.0 ),
// rotate so we are looking down
makeRotation( -0.2, Vector4(1, 0, 0) ),
// back away from the origin
makeTranslation( 0.0, 0.0, 10.0 )
) );
}