invisible: data/shaders/invisible.v.glsl annotate

invisible

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author	Eleni Maria Stea <eleni@mutantstargoat.com>
date	Sun, 17 Nov 2013 00:15:04 +0200
parents	b50ad2711f5f
children	61d593076c56

rev	line source
eleni@23	1 uniform sampler2D depth_tex;
eleni@24	2 varying float mask;
eleni@23	3
eleni@23	4 void main()
eleni@23	5 {
eleni@24	6 const float threshold = 0.8;
eleni@24	7 const float scale = 4.0;
eleni@24	8
eleni@24	9 float texel = texture2D(depth_tex, gl_MultiTexCoord0.xy).r;
eleni@23	10 vec4 vpos = gl_Vertex;
eleni@24	11 mask = 1.0 - step(threshold, texel);
eleni@24	12 vpos.z = texel * mask * scale;
eleni@23	13
eleni@23	14 gl_Position = gl_ModelViewProjectionMatrix * vpos;
eleni@23	15 gl_TexCoord[0] = gl_MultiTexCoord0;
eleni@23	16 }