dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/sign/sign_float_vert_xvary_ref.vert


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/


attribute vec4 gtf_Color;
attribute vec4 gtf_Vertex;
uniform mat4 gtf_ModelViewProjectionMatrix;
varying vec4 color;

void main (void)
{
	float c = 2.0 * (gtf_Color.r - 0.5);
	if(c > 0.0) c = 1.0 * c;
	if(c < 0.0) c = -1.0 * c;

	color = vec4(c, 0.0, 0.0, 1.0);
	gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}