GraphicsFinal

Question 1

What is the sound component of DirectX

Answer 1

DirectSound

Question 2

What does API stand for?

Answer 2

Application Programming Interface

Question 3

What does COM stand for?

Answer 3

Component Object Model

Question 4

Which parameter of the CreateDevice function specifies the device type to use?

Answer 4

DeviceType

Question 5

In a swap chain application, the surface in the ________ buffer slot is the surface that corresponds to the image presently being displayed on the monitor.

Answer 5

front

Question 6

Virtual functions are used so that you can code with function calls that are not bound until run-time. What else can you use with the C language to do this same process?

Answer 6

function pointer

Question 7

What is the purpose of the DirectDraw component of DirectX?

Answer 7

It is the primary rendering and 2D bitmap engine that controls the video display

Question 8

What is a reference rasterizer better known as? and what does it do? and what does it allow?

Answer 8

a REF device (1/3 credit)
emulates the entire Direct3D API in software(1/3 credit)
which allows you to write and test code that uses Direct3D features that are not available on your device (1/3 credit)

Question 9

Another name for depth buffering is Answer____- buffering.

Answer 9

z

Question 10

What are the 4 types of memory pools available with Direct3D?

Answer 10

D3DPOOL_DEFAULT
D3DPOOL_MANAGED
D3DPOOL_SYSTEMMEM
D3DPOOL_SCRATCH

Question 11

What parameter must be set to false to have a full-screen window?

Answer 11

windowed

Question 12

True or False

In order to use implement COM you must use C++.

Answer 12

False

Question 13

COM is a general specification that can be followed with any language on any machine, but one rule must be followed…what is that rule?

Answer 13

The binary image of the COM object must be that of a virtual class generated by a Microsoft VC compiler

Question 14

Vertex processing occurs in two different formats, they are_________and____________.

Answer 14

hardware and software

Question 15

What does HEL stand for and when is it used?

Answer 15

Hardware Emulation Layer

used when the hardware doesn’t support the feature that you are requesting

Question 16

What does HAL stand for? and what is it? and when is it used?

Answer 16

Hardware Abstraction Layer

set of device-specific code that instructs the device to perform an operation It talks directly to the hardware.

HAL is used when the feature you’re requesting is supported directly by the hardware and thus is accelerated.

Question 17

True or False

If you upgrade an old COM object, you don’t need to implement the old interface with the new one.

Answer 17

True

Question 18

What does GUID stand for?

Answer 18

Globally Unique Identifiers

Question 19

What is a depth buffer?

Answer 19

a surface that does not contain image data but rather depth information about a particular pixel

Question 20

What function initializes a main application window and implements the Direct3D initialization code?

Answer 20

InitD3D

Question 21

What makes COM objects and interfaces unique from other COM objects?

Answer 21

the use of GUID’s

Question 22

True or False

COM is a general specification that can be followed with any language on any machine.

Answer 22

True

Question 23

A_________is a matrix of pixels that Direct3D uses to store 2D image data.

Answer 23

surface

Question 24

What do you call the Direct3D antialiasing technique that is used to smooth out blocky-looking images?

Answer 24

Multisampling

Question 25

The first step in drawing preparations for a vertex buffer is to set the ___________ ___________.

Answer 25

stream source

Question 26

The last stage of the rendering pipeline is _______.

Answer 26

Rasterization

Question 27

True or False Rectangles are the building blocks of all objects.

Answer 27

False

Question 28

Compute the transpose of the following matrix: [x y] [z w]

Answer 28

[x z] | [y w]

Question 29

The D3DX library provides what 6 mesh creation functions?

Answer 29

``` D3DXCreateBox D3DXCreateSphere D3DXCreateCylinder D3DXCreateTeapot D3DXCreatePolygon D3DXCreateTorus ```

Question 30

What are the basic building blocks of 3D objects?

Answer 30

triangles

Question 31

Which transformation is responsible for transforming coordinates on the projection window to a rectangle on the screen?

Answer 31

viewport

Question 32

What is referred to as the volume of space defined by the field of view angles and the near and far planes?

Answer 32

frustum

Question 33

True or False In Direct3D colors are described with CMYB

Answer 33

False

Question 34

What are the two types of shading used with Direct3D?

Answer 34

flat and gouraud

Question 35

n what 3 ways can you describe a color in code in Direct3D?

Answer 35

D3DCOLOR D3DXCOLOR D3DCOLORVALUE

Question 36

The bits in the D3DCOLOR type are divided into how many different color bit sections?

Answer 36

4

Question 37

When______shading is used, the pixels of an object are uniformly colored by the color specified in the first vertex of the object.

Answer 37

flat

Question 38

When_________shading is used, the colors at each vertex are interpolated linearly across the face of an object.

Answer 38

Gouraud

Question 39

Shading occurs during___________and specifies how the vertex colors are used to compute the pixel colors that make up the primitive.

Answer 39

rasterization

Question 40

True or False The chapter demonstrates 3 different ways to render text.

Answer 40

True

Question 41

What does fps stand for? (not first person shooter)

Answer 41

frames per second

Question 42

You must fill out _________structure to describe the kind of font you wish to create.

Answer 42

LOGFONT

Question 43

Text drawing is done with a__________method which contains parameters for the x,y coordinates, the color, the string of text to draw and optional flags.

Answer 43

DrawText()

Question 44

In the D3DXCreateText method______is a handle to a device context that contains a description of the font that we are going to use to generate the mesh.

Answer 44

hDC

Question 45

Match the following operations with their default names: Pitch, Yaw, Roll Rotate around the up vector Rotate around the look vector Rotate around the right vector

Answer 45

Rotate around the up vector - yaw Rotate around the look vector - roll Rotate around the right vector - pitch

Question 46

True or False Camera position and orientation in the world coordinate system is maintained with 6 vectors: right, up, look, left, position, and speed.

Answer 46

False

Question 47

Orientation vectors include which of the following vectors: a. right, up and back b. right, up and down c. look, at and me d. right, up and look

Answer 47

d. right, up and look

Question 48

Name the four camera vectors used in the world coordinate system.

Answer 48

right, up, look and position

Question 49

List and describe the six operations a flexible camera should be able to perform.

Answer 49

rotate around the right vector (pitch) rotate around the up vector (yaw) rotate around the look vector (roll) strafe along the right vector fly along the up vector move along the look vector

Question 50

The right, up and look vectors of the camera's orientation are called orientation vectors. These vectors must be mutually perpendicular to each other and of unit length. What is the name given to this?

Answer 50

orthonormal

Question 51

To implement camera rotation methods, you need to be able to rotate around an_______ axis.

Answer 51

arbitrary

Question 52

What is the term given to moving side to side from the direction we are looking?

Answer 52

strafing

Question 53

What is the name of the interface to render text when you need to support complex fonts and formatting?

Answer 53

ID3DXFont