Adding textures effectively in 3D game using libGDX












0















I'm writing a 3D game in Java using libGDX. In my game there's a model instance of a room which his walls are just rectangles. I'm tryimg to add an effect of "bullet holes" which are just a texture that appear on the wall when the player shoots at it. I'm trying to figure what the optimal way to implement it? The obvious way is just creating a model instance that built from a single rect with the hole texture for each bullet hole - but this way there will be a draw call for each one of these holes, which is not performance-wise AFAIK.



A piece of code which I create the walls:



 Texture wallTexture = new Texture(Gdx.files.internal("wall.png"));

    wallTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);

    Material wallMaterial = new Material(TextureAttribute.createDiffuse(wallTexture));

    MeshPartBuilder meshBuilder = modelBuilder.part("walls", GL20.GL_TRIANGLES,

            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal |

                    VertexAttributes.Usage.TextureCoordinates, wallMaterial);

    meshBuilder.setUVRange(0, 0, C.ROOM_SIZE, 3);

    corner00.set(C.ROOM_SIZE, 0, 0);

    corner10.set(0, 0, 0);

    corner11.set(0, 0, 6);

    corner01.set(C.ROOM_SIZE, 0, 6);

    normal.set(0, 1, 0);

    line1000.setNormalDirection(auxVector2.set(0, 1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, 0, 0);

    corner11.set(C.ROOM_SIZE, 0, 6);

    corner01.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    normal.set(-1, 0, 0);

    line1110.setNormalDirection(auxVector2.set(-1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner11.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    corner01.set(0, C.ROOM_SIZE, 6);

    normal.set(0, -1, 0);

    line0111.setNormalDirection(auxVector2.set(0, -1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, 0, 0);

    corner10.set(0, C.ROOM_SIZE, 0);

    corner11.set(0, C.ROOM_SIZE, 6);

    corner01.set(0, 0, 6);

    normal.set(1, 0, 0);

    line0001.setNormalDirection(auxVector2.set(1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    Model levelModel = modelBuilder.end();

    levelModelInstance = new ModelInstance(levelModel);


This part occurs only once upon loading the level. The bullet holes are supposed to appear in-game.






java 3d libgdx textures







share|improve this question

























  • Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

    – Bsquare ℬℬ
    Nov 22 '18 at 8:32











  • Added a relevant piece of code.

    – Gad Wissberg
    Nov 22 '18 at 9:08











  • you should either rebake the texture or use sprites for it

    – Hllink
    Nov 22 '18 at 18:03
















0















I'm writing a 3D game in Java using libGDX. In my game there's a model instance of a room which his walls are just rectangles. I'm tryimg to add an effect of "bullet holes" which are just a texture that appear on the wall when the player shoots at it. I'm trying to figure what the optimal way to implement it? The obvious way is just creating a model instance that built from a single rect with the hole texture for each bullet hole - but this way there will be a draw call for each one of these holes, which is not performance-wise AFAIK.



A piece of code which I create the walls:



 Texture wallTexture = new Texture(Gdx.files.internal("wall.png"));

    wallTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);

    Material wallMaterial = new Material(TextureAttribute.createDiffuse(wallTexture));

    MeshPartBuilder meshBuilder = modelBuilder.part("walls", GL20.GL_TRIANGLES,

            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal |

                    VertexAttributes.Usage.TextureCoordinates, wallMaterial);

    meshBuilder.setUVRange(0, 0, C.ROOM_SIZE, 3);

    corner00.set(C.ROOM_SIZE, 0, 0);

    corner10.set(0, 0, 0);

    corner11.set(0, 0, 6);

    corner01.set(C.ROOM_SIZE, 0, 6);

    normal.set(0, 1, 0);

    line1000.setNormalDirection(auxVector2.set(0, 1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, 0, 0);

    corner11.set(C.ROOM_SIZE, 0, 6);

    corner01.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    normal.set(-1, 0, 0);

    line1110.setNormalDirection(auxVector2.set(-1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner11.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    corner01.set(0, C.ROOM_SIZE, 6);

    normal.set(0, -1, 0);

    line0111.setNormalDirection(auxVector2.set(0, -1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, 0, 0);

    corner10.set(0, C.ROOM_SIZE, 0);

    corner11.set(0, C.ROOM_SIZE, 6);

    corner01.set(0, 0, 6);

    normal.set(1, 0, 0);

    line0001.setNormalDirection(auxVector2.set(1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    Model levelModel = modelBuilder.end();

    levelModelInstance = new ModelInstance(levelModel);


This part occurs only once upon loading the level. The bullet holes are supposed to appear in-game.






java 3d libgdx textures







share|improve this question

























  • Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

    – Bsquare ℬℬ
    Nov 22 '18 at 8:32











  • Added a relevant piece of code.

    – Gad Wissberg
    Nov 22 '18 at 9:08











  • you should either rebake the texture or use sprites for it

    – Hllink
    Nov 22 '18 at 18:03














0












0








0








I'm writing a 3D game in Java using libGDX. In my game there's a model instance of a room which his walls are just rectangles. I'm tryimg to add an effect of "bullet holes" which are just a texture that appear on the wall when the player shoots at it. I'm trying to figure what the optimal way to implement it? The obvious way is just creating a model instance that built from a single rect with the hole texture for each bullet hole - but this way there will be a draw call for each one of these holes, which is not performance-wise AFAIK.



A piece of code which I create the walls:



 Texture wallTexture = new Texture(Gdx.files.internal("wall.png"));

    wallTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);

    Material wallMaterial = new Material(TextureAttribute.createDiffuse(wallTexture));

    MeshPartBuilder meshBuilder = modelBuilder.part("walls", GL20.GL_TRIANGLES,

            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal |

                    VertexAttributes.Usage.TextureCoordinates, wallMaterial);

    meshBuilder.setUVRange(0, 0, C.ROOM_SIZE, 3);

    corner00.set(C.ROOM_SIZE, 0, 0);

    corner10.set(0, 0, 0);

    corner11.set(0, 0, 6);

    corner01.set(C.ROOM_SIZE, 0, 6);

    normal.set(0, 1, 0);

    line1000.setNormalDirection(auxVector2.set(0, 1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, 0, 0);

    corner11.set(C.ROOM_SIZE, 0, 6);

    corner01.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    normal.set(-1, 0, 0);

    line1110.setNormalDirection(auxVector2.set(-1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner11.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    corner01.set(0, C.ROOM_SIZE, 6);

    normal.set(0, -1, 0);

    line0111.setNormalDirection(auxVector2.set(0, -1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, 0, 0);

    corner10.set(0, C.ROOM_SIZE, 0);

    corner11.set(0, C.ROOM_SIZE, 6);

    corner01.set(0, 0, 6);

    normal.set(1, 0, 0);

    line0001.setNormalDirection(auxVector2.set(1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    Model levelModel = modelBuilder.end();

    levelModelInstance = new ModelInstance(levelModel);


This part occurs only once upon loading the level. The bullet holes are supposed to appear in-game.






java 3d libgdx textures







share|improve this question
















I'm writing a 3D game in Java using libGDX. In my game there's a model instance of a room which his walls are just rectangles. I'm tryimg to add an effect of "bullet holes" which are just a texture that appear on the wall when the player shoots at it. I'm trying to figure what the optimal way to implement it? The obvious way is just creating a model instance that built from a single rect with the hole texture for each bullet hole - but this way there will be a draw call for each one of these holes, which is not performance-wise AFAIK.



A piece of code which I create the walls:



 Texture wallTexture = new Texture(Gdx.files.internal("wall.png"));

    wallTexture.setWrap(Texture.TextureWrap.Repeat, Texture.TextureWrap.Repeat);

    Material wallMaterial = new Material(TextureAttribute.createDiffuse(wallTexture));

    MeshPartBuilder meshBuilder = modelBuilder.part("walls", GL20.GL_TRIANGLES,

            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal |

                    VertexAttributes.Usage.TextureCoordinates, wallMaterial);

    meshBuilder.setUVRange(0, 0, C.ROOM_SIZE, 3);

    corner00.set(C.ROOM_SIZE, 0, 0);

    corner10.set(0, 0, 0);

    corner11.set(0, 0, 6);

    corner01.set(C.ROOM_SIZE, 0, 6);

    normal.set(0, 1, 0);

    line1000.setNormalDirection(auxVector2.set(0, 1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, 0, 0);

    corner11.set(C.ROOM_SIZE, 0, 6);

    corner01.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    normal.set(-1, 0, 0);

    line1110.setNormalDirection(auxVector2.set(-1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, C.ROOM_SIZE, 0);

    corner10.set(C.ROOM_SIZE, C.ROOM_SIZE, 0);

    corner11.set(C.ROOM_SIZE, C.ROOM_SIZE, 6);

    corner01.set(0, C.ROOM_SIZE, 6);

    normal.set(0, -1, 0);

    line0111.setNormalDirection(auxVector2.set(0, -1).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    corner00.set(0, 0, 0);

    corner10.set(0, C.ROOM_SIZE, 0);

    corner11.set(0, C.ROOM_SIZE, 6);

    corner01.set(0, 0, 6);

    normal.set(1, 0, 0);

    line0001.setNormalDirection(auxVector2.set(1, 0).angle());

    meshBuilder.rect(corner00, corner10, corner11, corner01, normal);

    Model levelModel = modelBuilder.end();

    levelModelInstance = new ModelInstance(levelModel);


This part occurs only once upon loading the level. The bullet holes are supposed to appear in-game.






java 3d libgdx textures




java 3d libgdx textures






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 22 '18 at 8:46







Gad Wissberg

















asked Nov 22 '18 at 7:36









Gad WissbergGad Wissberg

8128




8128













  • Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

    – Bsquare ℬℬ
    Nov 22 '18 at 8:32











  • Added a relevant piece of code.

    – Gad Wissberg
    Nov 22 '18 at 9:08











  • you should either rebake the texture or use sprites for it

    – Hllink
    Nov 22 '18 at 18:03



















  • Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

    – Bsquare ℬℬ
    Nov 22 '18 at 8:32











  • Added a relevant piece of code.

    – Gad Wissberg
    Nov 22 '18 at 9:08











  • you should either rebake the texture or use sprites for it

    – Hllink
    Nov 22 '18 at 18:03

















Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 22 '18 at 8:32





Please provide the relevant part of your code. Add a Minimal, Complete, and Verifiable example including proper example input/output data.

– Bsquare ℬℬ
Nov 22 '18 at 8:32













Added a relevant piece of code.

– Gad Wissberg
Nov 22 '18 at 9:08





Added a relevant piece of code.

– Gad Wissberg
Nov 22 '18 at 9:08













you should either rebake the texture or use sprites for it

– Hllink
Nov 22 '18 at 18:03





you should either rebake the texture or use sprites for it

– Hllink
Nov 22 '18 at 18:03












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