Graphics Reference
In-Depth Information
class
CModel {
.
// D3D texture reference
A:
LPDIRECT3DTEXTURE9 m
_
pTexture;
.
Source file.
Model.cpp
file
in the
Model
folder of the
D3D
_
SimpleTexture
project.
void
CModel::LoadTextureFromFile(
const wchar
_
t
*
path) {
// Previous loaded another one?
if
(m
_
pTexture != NULL)
// free before allocating new ones
m
_
pTexture->Release();
// Load file to graphics hardware
B:
if
(FAILED(D3DXCreateTextureFromFile(pDevice,path,&m
_
pTexture)))
// loading failed
m
_
pTexture = NULL;
C:
}
Listing 12.10.
Loading texture into graphics hardware.
corner, or
v
v
=
1
−
,
then
W
u
W
x
,
H
v
H
y
)
uv
[
]=[
xy
]
T
(
−
c
x
,−
c
y
)
S
(
T
(
c
u
,
c
v
)
,
in this case,
1
2
,
1
2
)
uv
[
]=[
]
(
,
)
(
(
.
,
.
)
.
xy
T
0
0
S
T
0
5
0
5
In this way,
u
=
x
×
0
.
5
+
0
.
5
,
v
=
−
=
−
(
×
.
+
.
)
.
v
1
1
y
0
5
0
5
With
uv
texture placements defined on vertices, Listing 12.10 shows the D3D
support for loading file textures. At label A, the
m
_
pTexture
is a reference to
a D3D-specific texture structure. Our job as a D3D programmer is to load an
appropriate texture into this structure and enable this structure for texture map-
ping while rendering primitives. At label B, we see that this D3D-specific struc-
ture is a limited resource, and we must properly manage (release) previously
Search WWH ::
Custom Search