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Replace default displacement shader from three.js #1

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Replace default displacement shader from three.js #1

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34 changes: 16 additions & 18 deletions source/nodes/MapHeightNodeShader.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -74,25 +74,23 @@ export class MapHeightNodeShader extends MapHeightNode
shader.uniforms[i] = material.userData[i];
}

// Vertex variables
shader.vertexShader =
`
uniform sampler2D heightMap;
` + shader.vertexShader;

// Vertex depth logic
shader.vertexShader = shader.vertexShader.replace('#include <fog_vertex>', `
#include <fog_vertex>

// Calculate height of the title
// custom displacement logic variables
shader.vertexShader = shader.vertexShader.replace(
"#include <displacementmap_pars_vertex>",
"uniform sampler2D heightMap;"
);

// custom displacement logic
shader.vertexShader = shader.vertexShader.replace(
"#include <displacementmap_vertex>",
`
// custom displacement map
vec4 _theight = texture2D(heightMap, vUv);
float _height = ((_theight.r * 255.0 * 65536.0 + _theight.g * 255.0 * 256.0 + _theight.b * 255.0) * 0.1) - 10000.0;
vec3 _transformed = position + _height * normal;

// Vertex position based on height
gl_Position = projectionMatrix * modelViewMatrix * vec4(_transformed, 1.0);
`);
};
float _height = (_theight.r * 255.0 * 256.0 + _theight.g * 255.0 + _theight.b * 255.0 / 256.0) - 32768.0;
transformed += normalize( objectNormal ) * _height;
`
);
};

return material;
}
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