1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
<?xml version="1.0" encoding="UTF-8"?>
<ratified href="EXT_frag_depth/">
<name>EXT_frag_depth</name>
<contact> <a href="https://www.khronos.org/webgl/public-mailing-list/">WebGL
working group</a> (public_webgl 'at' khronos.org) </contact>
<contributors>
<contributor>Florian Boesch (pyalot 'at' gmail.com)</contributor>
<contributor>Members of the WebGL working group</contributor>
</contributors>
<number>16</number>
<depends>
<api version="1.0"/>
<core version="2.0">
<glsl version="300 es"/>
</core>
</depends>
<overview>
<mirrors href="http://www.khronos.org/registry/gles/extensions/EXT/EXT_frag_depth.txt"
name="EXT_frag_depth">
</mirrors>
<features>
<feature>
Adds the ability to set the depth value of a fragment from
within the fragment shader with the built-in output variable gl_FragDepthEXT.
</feature>
<glsl extname="GL_EXT_frag_depth">
<stage type="fragment"/>
<output name="gl_FragDepthEXT" type="float" />
</glsl>
</features>
</overview>
<idl xml:space="preserve">
[NoInterfaceObject]
interface EXT_frag_depth {
};
</idl>
<samplecode xml:space="preserve">
<pre>
void main(){
gl_FragColor = vec4(1.0, 0.0, 1.0, 1.0);
gl_FragDepthEXT = 0.5;
}
</pre>
</samplecode>
<history>
<revision date="2012/11/22">
<change>Initial revision.</change>
</revision>
<revision date="2012/12/17">
<change>Moved to draft.</change>
</revision>
<revision date="2014/05/13">
<change>Moved to community approved.</change>
</revision>
<revision date="2014/07/15">
<change>Added NoInterfaceObject extended attribute.</change>
</revision>
<revision date="2015/05/29">
<change>Ratified by Khronos Board of Promoters.</change>
</revision>
</history>
</ratified>
|
