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Create Cartoon shader.vsh

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This commit is contained in:
danyalzia 2013-10-12 21:12:16 +05:00
parent a234dd397e
commit 2be4bd393a
1 changed files with 27 additions and 0 deletions
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assets/shaders/Cartoon shader.vsh Normal file
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attribute vec4 a_position;
attribute vec2 a_texcoord0;
uniform mat4 u_viewproj;
float size = 2.0; //edge detection offset, 2.0-5.0 suitable range
void main()
{
float x = (0.125/480.0)*size;
float y = (0.25/272.0)*size;
vec2 dg1 = vec2( x,y);
vec2 dg2 = vec2(-x,y);
vec2 dx = vec2(x,0.0);
vec2 dy = vec2(0.0,y);
gl_Position = u_viewproj * a_position;
gl_TexCoord[0]=a_texcoord0.xyxy;
gl_TexCoord[1].xy = gl_TexCoord[0].xy - dy;
gl_TexCoord[2].xy = gl_TexCoord[0].xy + dy;
gl_TexCoord[3].xy = gl_TexCoord[0].xy - dx;
gl_TexCoord[4].xy = gl_TexCoord[0].xy + dx;
gl_TexCoord[5].xy = gl_TexCoord[0].xy - dg1;
gl_TexCoord[6].xy = gl_TexCoord[0].xy + dg1;
gl_TexCoord[1].zw = gl_TexCoord[0].xy - dg2;
gl_TexCoord[2].zw = gl_TexCoord[0].xy + dg2;
}