vec2 computeSt(float featureId)
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{
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float stepX = model_textureStep.x;
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float centerX = model_textureStep.y;
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#ifdef MULTILINE_BATCH_TEXTURE
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float stepY = model_textureStep.z;
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float centerY = model_textureStep.w;
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float xId = mod(featureId, model_textureDimensions.x);
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float yId = floor(featureId / model_textureDimensions.x);
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return vec2(centerX + (xId * stepX), centerY + (yId * stepY));
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#else
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return vec2(centerX + (featureId * stepX), 0.5);
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#endif
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}
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