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greatly optimized modern vertex shader for ribbon.

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This commit is contained in:
mudlord 2016-09-06 15:42:16 +10:00
parent f637805c9e
commit 73a1cd4631
1 changed files with 13 additions and 21 deletions
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34
gfx/drivers/gl_shaders/modern_pipeline_xmb_ribbon.glsl.vert.h
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@ -22,29 +22,21 @@ static const char *stock_vertex_xmb_modern = GLSL(
mix( iqhash(n+170.0), iqhash(n+171.0),f.x),f.y),f.z); mix( iqhash(n+170.0), iqhash(n+171.0),f.x),f.y),f.z);
} }
float xmb_noise2( vec3 x ) float height( const in vec3 pos )
{ {
return cos((x.z*1.0)*2.0); const float twoPi = 2.0 * 3.14159;
} float k = twoPi / 20.0;
float omega = twoPi / 15.0;
float y = sin( k * pos.x - omega * time );
y += noise( 0.27 * vec3( 0.4 * pos.x, 3.0, 2.0 * pos.z - 0.5 * time ) );
return y;
}
void main() void main()
{ {
vec3 v = vec3(VertexCoord.x, 0.0, VertexCoord.y); vec3 pos = VertexCoord;
vec3 v2 = v; pos.y = height( pos );
vec3 v3 = v; gl_Position = vec4(pos, 0.0, 1.0);
fragVertexEc =VertexCoord;
v.y = xmb_noise2(v2)/6.0;
v3.x = v3.x + time/5.0;
v3.x = v3.x / 2.0;
v3.z = v3.z + time/10.0;
v3.y = v3.y + time/100.0;
v.z = v.z + noise(v3*7.0)/15.0;
v.y = v.y + noise(v3*7.0)/15.0 + cos(v.x*2.0-time/5.0)/5.0 - 0.3;
gl_Position = vec4(v, 1.0);
fragVertexEc = gl_Position.xyz;
} }
); );