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1699287c
编写于
3月 03, 2016
作者:
B
Ben Houston
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
basic optimizations of cube_uv for faster speed.
上级
d62f7f0c
变更
2
显示空白变更内容
内联
并排
Showing
2 changed file
with
32 addition
and
28 deletion
+32
-28
src/renderers/shaders/ShaderChunk/cube_uv_reflection_fragment.glsl
...rers/shaders/ShaderChunk/cube_uv_reflection_fragment.glsl
+30
-26
src/renderers/shaders/ShaderChunk/lights_pars.glsl
src/renderers/shaders/ShaderChunk/lights_pars.glsl
+2
-2
未找到文件。
src/renderers/shaders/ShaderChunk/cube_uv_reflection_fragment.glsl
浏览文件 @
1699287c
...
@@ -2,6 +2,7 @@
...
@@ -2,6 +2,7 @@
#ifdef ENVMAP_TYPE_CUBE_UV
#ifdef ENVMAP_TYPE_CUBE_UV
#define CUBE_UV_TEXTURE_SIZE 1024
int
getFaceFromDirection
(
vec3
direction
)
{
int
getFaceFromDirection
(
vec3
direction
)
{
vec3
absDirection
=
abs
(
direction
);
vec3
absDirection
=
abs
(
direction
);
...
@@ -21,28 +22,28 @@ int getFaceFromDirection(vec3 direction) {
...
@@ -21,28 +22,28 @@ int getFaceFromDirection(vec3 direction) {
return
face
;
return
face
;
}
}
vec2
MipLevelInfo
(
vec3
vec
,
float
textureSize
,
float
roughnessLevel
,
float
roughness
)
{
vec2
MipLevelInfo
(
vec3
vec
,
float
roughnessLevel
,
float
roughness
)
{
float
s
=
log2
(
textureSize
*
0
.
25
)
-
1
.
0
;
float
s
=
log2
(
float
(
CUBE_UV_TEXTURE_SIZE
)
*
0
.
25
)
-
1
.
0
;
float
scale
=
pow
(
2
.
0
,
s
-
roughnessLevel
);
float
scale
=
exp2
(
s
-
roughnessLevel
);
float
dxRoughness
=
dFdx
(
roughness
);
float
dxRoughness
=
dFdx
(
roughness
);
float
dyRoughness
=
dFdy
(
roughness
);
float
dyRoughness
=
dFdy
(
roughness
);
vec3
dx
=
dFdx
(
vec
*
scale
*
dxRoughness
);
vec3
dx
=
dFdx
(
vec
*
scale
*
dxRoughness
);
vec3
dy
=
dFdy
(
vec
*
scale
*
dyRoughness
);
vec3
dy
=
dFdy
(
vec
*
scale
*
dyRoughness
);
float
d
=
max
(
dot
(
dx
,
dx
),
dot
(
dy
,
dy
)
);
float
d
=
max
(
dot
(
dx
,
dx
),
dot
(
dy
,
dy
)
);
// Clamp the value to the max mip level counts. hard coded to 6 mips
// Clamp the value to the max mip level counts. hard coded to 6 mips
float
rangeClamp
=
pow
(
2
.
0
,
(
6
.
0
-
1
.
0
)
*
2
.
0
);
float
rangeClamp
=
exp2
(
(
6
.
0
-
1
.
0
)
*
2
.
0
);
d
=
clamp
(
d
,
1
.
0
,
rangeClamp
);
d
=
clamp
(
d
,
1
.
0
,
rangeClamp
);
float
mipLevel
=
0
.
5
*
log2
(
d
);
float
mipLevel
=
0
.
5
*
log2
(
d
);
return
vec2
(
floor
(
mipLevel
),
fract
(
mipLevel
));
return
vec2
(
floor
(
mipLevel
),
fract
(
mipLevel
));
}
}
vec2
getCubeUV
(
vec3
direction
,
float
roughnessLevel
,
float
mipLevel
,
float
textureSize
)
{
vec2
getCubeUV
(
vec3
direction
,
float
roughnessLevel
,
float
mipLevel
)
{
float
maxLods
=
log2
(
textureSize
*
0
.
25
)
-
2
.
0
;
float
maxLods
=
log2
(
float
(
CUBE_UV_TEXTURE_SIZE
)
*
0
.
25
)
-
2
.
0
;
mipLevel
=
roughnessLevel
>
maxLods
-
3
.
0
?
0
.
0
:
mipLevel
;
mipLevel
=
roughnessLevel
>
maxLods
-
3
.
0
?
0
.
0
:
mipLevel
;
float
a
=
16
.
0
/
textureSize
;
float
a
=
16
.
0
/
float
(
CUBE_UV_TEXTURE_SIZE
)
;
float
powScale
=
pow
(
2
.
0
,
roughnessLevel
+
mipLevel
);
float
powScale
=
exp2
(
roughnessLevel
+
mipLevel
);
float
scale
=
1
.
0
/
pow
(
2
.
0
,
roughnessLevel
+
2
.
0
+
mipLevel
);
float
scale
=
1
.
0
/
exp2
(
roughnessLevel
+
2
.
0
+
mipLevel
);
float
mipOffset
=
0
.
75
*
(
1
.
0
-
1
.
0
/
pow
(
2
.
0
,
mipLevel
))
/
pow
(
2
.
0
,
roughnessLevel
);
float
mipOffset
=
0
.
75
*
(
1
.
0
-
1
.
0
/
exp2
(
mipLevel
))
/
exp2
(
roughnessLevel
);
bool
bRes
=
mipLevel
==
0
.
0
;
bool
bRes
=
mipLevel
==
0
.
0
;
scale
=
bRes
&&
(
scale
<
a
)
?
a
:
scale
;
scale
=
bRes
&&
(
scale
<
a
)
?
a
:
scale
;
...
@@ -50,42 +51,45 @@ vec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel, float textu
...
@@ -50,42 +51,45 @@ vec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel, float textu
vec2
offset
;
vec2
offset
;
int
face
=
getFaceFromDirection
(
direction
);
int
face
=
getFaceFromDirection
(
direction
);
float
rcpPowScale
=
1
.
0
/
powScale
;
if
(
face
==
0
)
{
if
(
face
==
0
)
{
r
=
vec3
(
direction
.
x
,
-
direction
.
z
,
direction
.
y
);
r
=
vec3
(
direction
.
x
,
-
direction
.
z
,
direction
.
y
);
offset
=
vec2
(
0
.
0
+
mipOffset
,
0
.
75
/
p
owScale
);
offset
=
vec2
(
0
.
0
+
mipOffset
,
0
.
75
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
}
}
else
if
(
face
==
1
)
{
else
if
(
face
==
1
)
{
r
=
vec3
(
direction
.
y
,
direction
.
x
,
direction
.
z
);
r
=
vec3
(
direction
.
y
,
direction
.
x
,
direction
.
z
);
offset
=
vec2
(
scale
+
mipOffset
,
0
.
75
/
p
owScale
);
offset
=
vec2
(
scale
+
mipOffset
,
0
.
75
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
}
}
else
if
(
face
==
2
)
{
else
if
(
face
==
2
)
{
r
=
vec3
(
direction
.
z
,
direction
.
x
,
direction
.
y
);
r
=
vec3
(
direction
.
z
,
direction
.
x
,
direction
.
y
);
offset
=
vec2
(
2
.
0
*
scale
+
mipOffset
,
0
.
75
/
p
owScale
);
offset
=
vec2
(
2
.
0
*
scale
+
mipOffset
,
0
.
75
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
a
:
offset
.
y
;
}
}
else
if
(
face
==
3
)
{
else
if
(
face
==
3
)
{
r
=
vec3
(
direction
.
x
,
direction
.
z
,
direction
.
y
);
r
=
vec3
(
direction
.
x
,
direction
.
z
,
direction
.
y
);
offset
=
vec2
(
0
.
0
+
mipOffset
,
0
.
5
/
p
owScale
);
offset
=
vec2
(
0
.
0
+
mipOffset
,
0
.
5
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
}
}
else
if
(
face
==
4
)
{
else
if
(
face
==
4
)
{
r
=
vec3
(
direction
.
y
,
direction
.
x
,
-
direction
.
z
);
r
=
vec3
(
direction
.
y
,
direction
.
x
,
-
direction
.
z
);
offset
=
vec2
(
scale
+
mipOffset
,
0
.
5
/
p
owScale
);
offset
=
vec2
(
scale
+
mipOffset
,
0
.
5
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
}
}
else
{
else
{
r
=
vec3
(
direction
.
z
,
-
direction
.
x
,
direction
.
y
);
r
=
vec3
(
direction
.
z
,
-
direction
.
x
,
direction
.
y
);
offset
=
vec2
(
2
.
0
*
scale
+
mipOffset
,
0
.
5
/
p
owScale
);
offset
=
vec2
(
2
.
0
*
scale
+
mipOffset
,
0
.
5
*
rcpP
owScale
);
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
offset
.
y
=
bRes
&&
(
offset
.
y
<
2
.
0
*
a
)
?
0
.
0
:
offset
.
y
;
}
}
r
=
normalize
(
r
);
r
=
normalize
(
r
);
float
texelOffset
=
0
.
5
/
textureSize
;
float
texelOffset
=
0
.
5
/
float
(
CUBE_UV_TEXTURE_SIZE
)
;
float
s1
=
(
r
.
y
/
abs
(
r
.
x
)
+
1
.
0
)
*
0
.
5
;
float
s1
=
(
r
.
y
/
abs
(
r
.
x
)
+
1
.
0
)
*
0
.
5
;
float
s2
=
(
r
.
z
/
abs
(
r
.
x
)
+
1
.
0
)
*
0
.
5
;
float
s2
=
(
r
.
z
/
abs
(
r
.
x
)
+
1
.
0
)
*
0
.
5
;
vec2
uv
=
offset
+
vec2
(
s1
*
scale
,
s2
*
scale
);
vec2
uv
=
offset
+
vec2
(
s1
,
s2
)
*
scale
;
float
min_x
=
offset
.
x
+
texelOffset
;
float
max_x
=
offset
.
x
+
scale
-
texelOffset
;
float
min_x
=
offset
.
x
+
texelOffset
;
float
max_x
=
offset
.
x
+
scale
-
texelOffset
;
float
min_y
=
offset
.
y
+
texelOffset
;
float
min_y
=
offset
.
y
+
texelOffset
;
float
max_y
=
offset
.
y
+
scale
-
texelOffset
;
float
max_y
=
offset
.
y
+
scale
-
texelOffset
;
float
delx
=
max_x
-
min_x
;
float
delx
=
max_x
-
min_x
;
...
@@ -95,13 +99,13 @@ vec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel, float textu
...
@@ -95,13 +99,13 @@ vec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel, float textu
return
uv
;
return
uv
;
}
}
vec4
textureCubeUV
(
vec3
reflectedDirection
,
float
roughness
,
float
textureSize
)
{
vec4
textureCubeUV
(
vec3
reflectedDirection
,
float
roughness
)
{
float
maxLods
=
log2
(
textureSize
*
0
.
25
)
-
3
.
0
;
float
maxLods
=
log2
(
float
(
CUBE_UV_TEXTURE_SIZE
)
*
0
.
25
)
-
3
.
0
;
float
roughnessVal
=
roughness
*
maxLods
;
float
roughnessVal
=
roughness
*
maxLods
;
float
r1
=
floor
(
roughnessVal
);
float
r1
=
floor
(
roughnessVal
);
float
r2
=
r1
+
1
.
0
;
float
r2
=
r1
+
1
.
0
;
float
t
=
fract
(
roughnessVal
);
float
t
=
fract
(
roughnessVal
);
vec2
mipInfo
=
MipLevelInfo
(
reflectedDirection
,
textureSize
,
r1
,
roughness
);
vec2
mipInfo
=
MipLevelInfo
(
reflectedDirection
,
r1
,
roughness
);
float
s
=
mipInfo
.
y
;
float
s
=
mipInfo
.
y
;
float
level0
=
mipInfo
.
x
;
float
level0
=
mipInfo
.
x
;
float
level1
=
level0
+
1
.
0
;
float
level1
=
level0
+
1
.
0
;
...
@@ -113,20 +117,20 @@ vec4 textureCubeUV(vec3 reflectedDirection, float roughness, float textureSize)
...
@@ -113,20 +117,20 @@ vec4 textureCubeUV(vec3 reflectedDirection, float roughness, float textureSize)
#endif
#endif
// Tri linear interpolation.
// Tri linear interpolation.
vec2
uv_10
=
getCubeUV
(
reflectedDirection
,
r1
,
level0
,
textureSize
);
vec2
uv_10
=
getCubeUV
(
reflectedDirection
,
r1
,
level0
);
vec4
color10
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_10
));
vec4
color10
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_10
));
vec2
uv_20
=
getCubeUV
(
reflectedDirection
,
r2
,
level0
,
textureSize
);
vec2
uv_20
=
getCubeUV
(
reflectedDirection
,
r2
,
level0
);
vec4
color20
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_20
));
vec4
color20
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_20
));
vec4
result
=
mix
(
color10
,
color20
,
t
);
vec4
result
=
mix
(
color10
,
color20
,
t
);
#if ! defined( DISABLE_CUBE_UV_MIPMAP_INTERPOLATION )
#if ! defined( DISABLE_CUBE_UV_MIPMAP_INTERPOLATION )
vec2
uv_11
=
getCubeUV
(
reflectedDirection
,
r1
,
level1
,
textureSize
);
vec2
uv_11
=
getCubeUV
(
reflectedDirection
,
r1
,
level1
);
vec4
color11
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_11
));
vec4
color11
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_11
));
vec2
uv_21
=
getCubeUV
(
reflectedDirection
,
r2
,
level1
,
textureSize
);
vec2
uv_21
=
getCubeUV
(
reflectedDirection
,
r2
,
level1
);
vec4
color21
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_21
));
vec4
color21
=
envMapTexelToLinear
(
texture2D
(
envMap
,
uv_21
));
vec4
c2
=
mix
(
color11
,
color21
,
t
);
vec4
c2
=
mix
(
color11
,
color21
,
t
);
...
...
src/renderers/shaders/ShaderChunk/lights_pars.glsl
浏览文件 @
1699287c
...
@@ -182,7 +182,7 @@
...
@@ -182,7 +182,7 @@
#elif defined( ENVMAP_TYPE_CUBE_UV )
#elif defined( ENVMAP_TYPE_CUBE_UV )
vec3
queryVec
=
flipNormal
*
vec3
(
flipEnvMap
*
worldNormal
.
x
,
worldNormal
.
yz
);
vec3
queryVec
=
flipNormal
*
vec3
(
flipEnvMap
*
worldNormal
.
x
,
worldNormal
.
yz
);
vec4
envMapColor
=
textureCubeUV
(
queryVec
,
1
.
0
,
1024
.
0
);
vec4
envMapColor
=
textureCubeUV
(
queryVec
,
1
.
0
);
#else
#else
...
@@ -253,7 +253,7 @@
...
@@ -253,7 +253,7 @@
#elif defined( ENVMAP_TYPE_CUBE_UV )
#elif defined( ENVMAP_TYPE_CUBE_UV )
vec3
queryReflectVec
=
flipNormal
*
vec3
(
flipEnvMap
*
reflectVec
.
x
,
reflectVec
.
yz
);
vec3
queryReflectVec
=
flipNormal
*
vec3
(
flipEnvMap
*
reflectVec
.
x
,
reflectVec
.
yz
);
vec4
envMapColor
=
textureCubeUV
(
queryReflectVec
,
BlinnExponentToGGXRoughness
(
blinnShininessExponent
)
,
1024
.
0
);
vec4
envMapColor
=
textureCubeUV
(
queryReflectVec
,
BlinnExponentToGGXRoughness
(
blinnShininessExponent
));
#elif defined( ENVMAP_TYPE_EQUIREC )
#elif defined( ENVMAP_TYPE_EQUIREC )
...
...
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