Hello I'm having problem with accidental-noise-library Hello I am trying to create a procedurally generated world to my game.I have already figured out how to do it but the problem is that it's taking too much time. I am trying to generate a world size of 8400x2500 and It takes 70 minutes to finish the process. Any thoughts how to improve speed of generating this world? Here are some code that I wrote to generate my world and an image to show how does it look: Map #include #include "anl.h" int main() { anl::CMWC4096 rnd; rnd.setSeedTime(); anl::CImplicitGradient ground_gradient; ground_gradient.setGradient(0, 0, -1, 1); std::cout << "Generating Lowlands..." << std::endl; //LOWLANDS anl::CImplicitFractal lowland_shape_fractal(anl::BILLOW, anl::GRADIENT, anl::QUINTIC); lowland_shape_fractal.setNumOctaves(2); lowland_shape_fractal.setFrequency(1); //lowland_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect lowland_autocorrect(-1, 1); lowland_autocorrect.setSource(&lowland_shape_fractal); anl::CImplicitScaleOffset lowland_scale(0.125, -0.10); lowland_scale.setSource(&lowland_autocorrect); anl::CImplicitScaleDomain lowland_y_scale; lowland_y_scale.setSource(&lowland_scale); lowland_y_scale.setYScale(-1); anl::CImplicitTranslateDomain lowland_terrain; lowland_terrain.setSource(&ground_gradient); lowland_terrain.setYAxisSource(&lowland_y_scale); //LOWLANDS// std::cout << "Generating Highlands..." << std::endl; //HIGHLANDS anl::CImplicitFractal highland_shape_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); highland_shape_fractal.setNumOctaves(4); highland_shape_fractal.setFrequency(2); //highland_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect highland_autocorrect(-1, 1); highland_autocorrect.setSource(&highland_shape_fractal); anl::CImplicitScaleOffset highland_scale(0.25, 0.0); highland_scale.setSource(&highland_autocorrect); anl::CImplicitScaleDomain highland_y_scale; highland_y_scale.setSource(&highland_scale); highland_y_scale.setYScale(-1); anl::CImplicitTranslateDomain highland_terrain; highland_terrain.setSource(&ground_gradient); highland_terrain.setYAxisSource(&highland_y_scale); //HIGHLANDS// std::cout << "Generating Mountains..." << std::endl; //MOUNTAINS anl::CImplicitFractal mountain_shape_fractal(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); mountain_shape_fractal.setNumOctaves(8); mountain_shape_fractal.setFrequency(1); //mountain_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect mountain_autocorrect(-1, 1); mountain_autocorrect.setSource(&mountain_shape_fractal); anl::CImplicitScaleOffset mountain_scale(0.53, 0.10); mountain_scale.setSource(&mountain_autocorrect); anl::CImplicitScaleDomain mountain_y_scale; mountain_y_scale.setSource(&mountain_scale); mountain_y_scale.setYScale(-0.5); anl::CImplicitTranslateDomain mountain_terrain; mountain_terrain.setSource(&ground_gradient); mountain_terrain.setYAxisSource(&mountain_y_scale); //MOUNTAINS// std::cout << "Mixing Terrains..." << std::endl; //TERRAIN anl::CImplicitFractal terrain_type_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); terrain_type_fractal.setNumOctaves(3); terrain_type_fractal.setFrequency(0.2); //terrain_type_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect terrain_autocorrect(0, 1); terrain_autocorrect.setSource(&terrain_type_fractal); anl::CImplicitScaleDomain terrain_type_y_scale; terrain_type_y_scale.setSource(&terrain_autocorrect); terrain_type_y_scale.setYScale(-1); anl::CImplicitCache terrain_type_cache; terrain_type_cache.setSource(&terrain_type_y_scale); //TERRAIN// anl::CImplicitSelect highland_mountain_select; highland_mountain_select.setLowSource(&highland_terrain); highland_mountain_select.setHighSource(&mountain_terrain); highland_mountain_select.setControlSource(&terrain_type_cache); highland_mountain_select.setThreshold(0.55); highland_mountain_select.setFalloff(0.2); anl::CImplicitSelect highland_lowland_select; highland_lowland_select.setLowSource(&lowland_terrain); highland_lowland_select.setHighSource(&highland_mountain_select); highland_lowland_select.setControlSource(&terrain_type_cache); highland_lowland_select.setThreshold(0.25); highland_lowland_select.setFalloff(0.15); anl::CImplicitCache highland_lowland_select_cache; highland_lowland_select_cache.setSource(&highland_lowland_select); anl::CImplicitSelect ground_select; ground_select.setLowSource(0.0); ground_select.setHighSource(1); ground_select.setThreshold(0.5); ground_select.setFalloff(0.0); ground_select.setControlSource(&highland_lowland_select_cache); std::cout << "Generating Caves..." << std::endl; //CAVES //CAVES ORYGINAL anl::CImplicitFractal cave_shape(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_shape.setNumOctaves(1); cave_shape.setFrequency(5); //cave_shape.setSeed(rnd.get()); anl::CImplicitBias cave_attenuate_bias(0.91); cave_attenuate_bias.setSource(&highland_lowland_select_cache); anl::CImplicitCombiner cave_shape_attenuate(anl::MULT); cave_shape_attenuate.setSource(0, &cave_shape); cave_shape_attenuate.setSource(1, &cave_attenuate_bias); anl::CImplicitFractal cave_perturb_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal.setNumOctaves(6); cave_perturb_fractal.setFrequency(5); //cave_perturb_fractal.setSeed(rnd.get()); anl::CImplicitScaleOffset cave_perturb_scale(1.0, 0.0); cave_perturb_scale.setSource(&cave_perturb_fractal); anl::CImplicitTranslateDomain cave_perturb; cave_perturb.setSource(&cave_shape_attenuate); cave_perturb.setXAxisSource(&cave_perturb_scale); anl::CImplicitSelect cave_select; cave_select.setLowSource(1.0); cave_select.setHighSource(0.0); cave_select.setControlSource(&cave_perturb); cave_select.setThreshold(0.9); cave_select.setFalloff(0.0); //CAVES ORYGINAL// //CAVES MINE anl::CImplicitFractal cave_perturb_fractal_deep(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep.setNumOctaves(1); cave_perturb_fractal_deep.setFrequency(100); //cave_perturb_fractal_deep.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep; cave_select_deep.setLowSource(1.0); cave_select_deep.setHighSource(0.0); cave_select_deep.setControlSource(&cave_perturb_fractal_deep); cave_select_deep.setThreshold(0.98); cave_select_deep.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain; scaledomain.setSource(&cave_select_deep); scaledomain.setYScale(0.0); /////->>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep1(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep1.setNumOctaves(1); cave_perturb_fractal_deep1.setFrequency(50); //cave_perturb_fractal_deep1.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep1; cave_select_deep1.setLowSource(0.0); cave_select_deep1.setHighSource(1.0); cave_select_deep1.setControlSource(&cave_perturb_fractal_deep1); cave_select_deep1.setThreshold(0.8); cave_select_deep1.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain1; scaledomain1.setSource(&cave_select_deep1); scaledomain1.setYScale(0.0); /////<<<<<<<<<<<<<<<<<<<<<<<<<- ////->>>>>>>>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep2(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep2.setNumOctaves(1); cave_perturb_fractal_deep2.setFrequency(25); //cave_perturb_fractal_deep2.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep2; cave_select_deep2.setLowSource(0.0); cave_select_deep2.setHighSource(1.0); cave_select_deep2.setControlSource(&cave_perturb_fractal_deep2); cave_select_deep2.setThreshold(0.85); cave_select_deep2.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain2; scaledomain2.setSource(&cave_select_deep2); scaledomain2.setYScale(0.0); ////<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<- ////->>>>>>>>>>>>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep3(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep3.setNumOctaves(1); cave_perturb_fractal_deep3.setFrequency(7); //cave_perturb_fractal_deep3.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep3; cave_select_deep3.setLowSource(0.0); cave_select_deep3.setHighSource(1.0); cave_select_deep3.setControlSource(&cave_perturb_fractal_deep3); cave_select_deep3.setThreshold(0.85); cave_select_deep3.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain3; scaledomain3.setSource(&cave_select_deep3); scaledomain3.setYScale(0.0); /////<<<<<<<<<<<<<<<<<<<<<<<<<<<- anl::CImplicitCombiner combiner0(anl::MAX); combiner0.setSource(0, &scaledomain1); combiner0.setSource(1, &scaledomain2); anl::CImplicitCombiner combiner1(anl::MAX); combiner1.setSource(0, &combiner0); combiner1.setSource(1, &scaledomain3); anl::CImplicitCombiner combiner2(anl::MAX); combiner2.setSource(0, &scaledomain); combiner2.setSource(1, &combiner1); anl::CImplicitFractal fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); fractal.setNumOctaves(6); fractal.setFrequency(0.25); //fractal.setSeed(rnd.get()); anl::CImplicitScaleOffset scaleoff(0.5, 0.0); scaleoff.setSource(&fractal); anl::CImplicitTranslateDomain translate; translate.setSource(&combiner2); translate.setXAxisSource(&scaleoff); anl::CImplicitFractal fractal1(anl::FBM, anl::GRADIENT, anl::QUINTIC); fractal1.setNumOctaves(4); fractal1.setFrequency(1); //fractal1.setSeed(rnd.get()); anl::CImplicitScaleOffset scaleoff1(0.5, 0.0); scaleoff1.setSource(&fractal1); anl::CImplicitTranslateDomain end; end.setSource(&translate); end.setXAxisSource(&scaleoff1); //CAVES MINE// anl::CImplicitCombiner all_caves_combine(anl::MIN); all_caves_combine.setSource(0, &cave_select); all_caves_combine.setSource(1, &end); anl::CImplicitCombiner ground_cave_multiply(anl::MULT); ground_cave_multiply.setSource(0, &all_caves_combine); ground_cave_multiply.setSource(1, &ground_select); //CAVES std::cout << "World Generated..." << std::endl; std::cout << "Adding to compose..." << std::endl; anl::CRGBACompositeChannels compose1(anl::RGB); compose1.setBlueSource(&ground_cave_multiply); compose1.setGreenSource(&ground_cave_multiply); compose1.setRedSource(&ground_cave_multiply); compose1.setAlphaSource(1.0); std::cout << "End compose-ing" << std::endl; anl::TArray2D img(8400 /1, 2400 /1); anl::SMappingRanges ranges; anl::mapRGBA2D(anl::SEAMLESS_NONE, img, compose1, ranges, 0); anl::saveRGBAArray((char*)"img/a.tga", &img); https://ift.tt/eA8V8J

Hello I am trying to create a procedurally generated world to my game.I have already figured out how to do it but the problem is that it's taking too much time. I am trying to generate a world size of 8400x2500 and It takes 70 minutes to finish the process. Any thoughts how to improve speed of generating this world? Here are some code that I wrote to generate my world and an image to show how does it look: Map #include <iostream> #include "anl.h" int main() { anl::CMWC4096 rnd; rnd.setSeedTime(); anl::CImplicitGradient ground_gradient; ground_gradient.setGradient(0, 0, -1, 1); std::cout << "Generating Lowlands..." << std::endl; //LOWLANDS anl::CImplicitFractal lowland_shape_fractal(anl::BILLOW, anl::GRADIENT, anl::QUINTIC); lowland_shape_fractal.setNumOctaves(2); lowland_shape_fractal.setFrequency(1); //lowland_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect lowland_autocorrect(-1, 1); lowland_autocorrect.setSource(&lowland_shape_fractal); anl::CImplicitScaleOffset lowland_scale(0.125, -0.10); lowland_scale.setSource(&lowland_autocorrect); anl::CImplicitScaleDomain lowland_y_scale; lowland_y_scale.setSource(&lowland_scale); lowland_y_scale.setYScale(-1); anl::CImplicitTranslateDomain lowland_terrain; lowland_terrain.setSource(&ground_gradient); lowland_terrain.setYAxisSource(&lowland_y_scale); //LOWLANDS// std::cout << "Generating Highlands..." << std::endl; //HIGHLANDS anl::CImplicitFractal highland_shape_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); highland_shape_fractal.setNumOctaves(4); highland_shape_fractal.setFrequency(2); //highland_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect highland_autocorrect(-1, 1); highland_autocorrect.setSource(&highland_shape_fractal); anl::CImplicitScaleOffset highland_scale(0.25, 0.0); highland_scale.setSource(&highland_autocorrect); anl::CImplicitScaleDomain highland_y_scale; highland_y_scale.setSource(&highland_scale); highland_y_scale.setYScale(-1); anl::CImplicitTranslateDomain highland_terrain; highland_terrain.setSource(&ground_gradient); highland_terrain.setYAxisSource(&highland_y_scale); //HIGHLANDS// std::cout << "Generating Mountains..." << std::endl; //MOUNTAINS anl::CImplicitFractal mountain_shape_fractal(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); mountain_shape_fractal.setNumOctaves(8); mountain_shape_fractal.setFrequency(1); //mountain_shape_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect mountain_autocorrect(-1, 1); mountain_autocorrect.setSource(&mountain_shape_fractal); anl::CImplicitScaleOffset mountain_scale(0.53, 0.10); mountain_scale.setSource(&mountain_autocorrect); anl::CImplicitScaleDomain mountain_y_scale; mountain_y_scale.setSource(&mountain_scale); mountain_y_scale.setYScale(-0.5); anl::CImplicitTranslateDomain mountain_terrain; mountain_terrain.setSource(&ground_gradient); mountain_terrain.setYAxisSource(&mountain_y_scale); //MOUNTAINS// std::cout << "Mixing Terrains..." << std::endl; //TERRAIN anl::CImplicitFractal terrain_type_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); terrain_type_fractal.setNumOctaves(3); terrain_type_fractal.setFrequency(0.2); //terrain_type_fractal.setSeed(rnd.get()); anl::CImplicitAutoCorrect terrain_autocorrect(0, 1); terrain_autocorrect.setSource(&terrain_type_fractal); anl::CImplicitScaleDomain terrain_type_y_scale; terrain_type_y_scale.setSource(&terrain_autocorrect); terrain_type_y_scale.setYScale(-1); anl::CImplicitCache terrain_type_cache; terrain_type_cache.setSource(&terrain_type_y_scale); //TERRAIN// anl::CImplicitSelect highland_mountain_select; highland_mountain_select.setLowSource(&highland_terrain); highland_mountain_select.setHighSource(&mountain_terrain); highland_mountain_select.setControlSource(&terrain_type_cache); highland_mountain_select.setThreshold(0.55); highland_mountain_select.setFalloff(0.2); anl::CImplicitSelect highland_lowland_select; highland_lowland_select.setLowSource(&lowland_terrain); highland_lowland_select.setHighSource(&highland_mountain_select); highland_lowland_select.setControlSource(&terrain_type_cache); highland_lowland_select.setThreshold(0.25); highland_lowland_select.setFalloff(0.15); anl::CImplicitCache highland_lowland_select_cache; highland_lowland_select_cache.setSource(&highland_lowland_select); anl::CImplicitSelect ground_select; ground_select.setLowSource(0.0); ground_select.setHighSource(1); ground_select.setThreshold(0.5); ground_select.setFalloff(0.0); ground_select.setControlSource(&highland_lowland_select_cache); std::cout << "Generating Caves..." << std::endl; //CAVES //CAVES ORYGINAL anl::CImplicitFractal cave_shape(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_shape.setNumOctaves(1); cave_shape.setFrequency(5); //cave_shape.setSeed(rnd.get()); anl::CImplicitBias cave_attenuate_bias(0.91); cave_attenuate_bias.setSource(&highland_lowland_select_cache); anl::CImplicitCombiner cave_shape_attenuate(anl::MULT); cave_shape_attenuate.setSource(0, &cave_shape); cave_shape_attenuate.setSource(1, &cave_attenuate_bias); anl::CImplicitFractal cave_perturb_fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal.setNumOctaves(6); cave_perturb_fractal.setFrequency(5); //cave_perturb_fractal.setSeed(rnd.get()); anl::CImplicitScaleOffset cave_perturb_scale(1.0, 0.0); cave_perturb_scale.setSource(&cave_perturb_fractal); anl::CImplicitTranslateDomain cave_perturb; cave_perturb.setSource(&cave_shape_attenuate); cave_perturb.setXAxisSource(&cave_perturb_scale); anl::CImplicitSelect cave_select; cave_select.setLowSource(1.0); cave_select.setHighSource(0.0); cave_select.setControlSource(&cave_perturb); cave_select.setThreshold(0.9); cave_select.setFalloff(0.0); //CAVES ORYGINAL// //CAVES MINE anl::CImplicitFractal cave_perturb_fractal_deep(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep.setNumOctaves(1); cave_perturb_fractal_deep.setFrequency(100); //cave_perturb_fractal_deep.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep; cave_select_deep.setLowSource(1.0); cave_select_deep.setHighSource(0.0); cave_select_deep.setControlSource(&cave_perturb_fractal_deep); cave_select_deep.setThreshold(0.98); cave_select_deep.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain; scaledomain.setSource(&cave_select_deep); scaledomain.setYScale(0.0); /////->>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep1(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep1.setNumOctaves(1); cave_perturb_fractal_deep1.setFrequency(50); //cave_perturb_fractal_deep1.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep1; cave_select_deep1.setLowSource(0.0); cave_select_deep1.setHighSource(1.0); cave_select_deep1.setControlSource(&cave_perturb_fractal_deep1); cave_select_deep1.setThreshold(0.8); cave_select_deep1.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain1; scaledomain1.setSource(&cave_select_deep1); scaledomain1.setYScale(0.0); /////<<<<<<<<<<<<<<<<<<<<<<<<<- ////->>>>>>>>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep2(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep2.setNumOctaves(1); cave_perturb_fractal_deep2.setFrequency(25); //cave_perturb_fractal_deep2.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep2; cave_select_deep2.setLowSource(0.0); cave_select_deep2.setHighSource(1.0); cave_select_deep2.setControlSource(&cave_perturb_fractal_deep2); cave_select_deep2.setThreshold(0.85); cave_select_deep2.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain2; scaledomain2.setSource(&cave_select_deep2); scaledomain2.setYScale(0.0); ////<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<- ////->>>>>>>>>>>>>>>>>>>>>>>>>>>>>> anl::CImplicitFractal cave_perturb_fractal_deep3(anl::RIDGEDMULTI, anl::GRADIENT, anl::QUINTIC); cave_perturb_fractal_deep3.setNumOctaves(1); cave_perturb_fractal_deep3.setFrequency(7); //cave_perturb_fractal_deep3.setSeed(rnd.get()); anl::CImplicitSelect cave_select_deep3; cave_select_deep3.setLowSource(0.0); cave_select_deep3.setHighSource(1.0); cave_select_deep3.setControlSource(&cave_perturb_fractal_deep3); cave_select_deep3.setThreshold(0.85); cave_select_deep3.setFalloff(0.0); anl::CImplicitScaleDomain scaledomain3; scaledomain3.setSource(&cave_select_deep3); scaledomain3.setYScale(0.0); /////<<<<<<<<<<<<<<<<<<<<<<<<<<<- anl::CImplicitCombiner combiner0(anl::MAX); combiner0.setSource(0, &scaledomain1); combiner0.setSource(1, &scaledomain2); anl::CImplicitCombiner combiner1(anl::MAX); combiner1.setSource(0, &combiner0); combiner1.setSource(1, &scaledomain3); anl::CImplicitCombiner combiner2(anl::MAX); combiner2.setSource(0, &scaledomain); combiner2.setSource(1, &combiner1); anl::CImplicitFractal fractal(anl::FBM, anl::GRADIENT, anl::QUINTIC); fractal.setNumOctaves(6); fractal.setFrequency(0.25); //fractal.setSeed(rnd.get()); anl::CImplicitScaleOffset scaleoff(0.5, 0.0); scaleoff.setSource(&fractal); anl::CImplicitTranslateDomain translate; translate.setSource(&combiner2); translate.setXAxisSource(&scaleoff); anl::CImplicitFractal fractal1(anl::FBM, anl::GRADIENT, anl::QUINTIC); fractal1.setNumOctaves(4); fractal1.setFrequency(1); //fractal1.setSeed(rnd.get()); anl::CImplicitScaleOffset scaleoff1(0.5, 0.0); scaleoff1.setSource(&fractal1); anl::CImplicitTranslateDomain end; end.setSource(&translate); end.setXAxisSource(&scaleoff1); //CAVES MINE// anl::CImplicitCombiner all_caves_combine(anl::MIN); all_caves_combine.setSource(0, &cave_select); all_caves_combine.setSource(1, &end); anl::CImplicitCombiner ground_cave_multiply(anl::MULT); ground_cave_multiply.setSource(0, &all_caves_combine); ground_cave_multiply.setSource(1, &ground_select); //CAVES std::cout << "World Generated..." << std::endl; std::cout << "Adding to compose..." << std::endl; anl::CRGBACompositeChannels compose1(anl::RGB); compose1.setBlueSource(&ground_cave_multiply); compose1.setGreenSource(&ground_cave_multiply); compose1.setRedSource(&ground_cave_multiply); compose1.setAlphaSource(1.0); std::cout << "End compose-ing" << std::endl; anl::TArray2D<anl::SRGBA> img(8400 /1, 2400 /1); anl::SMappingRanges ranges; anl::mapRGBA2D(anl::SEAMLESS_NONE, img, compose1, ranges, 0); anl::saveRGBAArray((char*)"img/a.tga", &img);

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