[1.7.2->1.12.2] Vec3 Pool

[Cadiboo]

Does anyone know what the 1.12.2 replacement for the 1.7 method world.getWorldVec3Pool().getVecFromPool(double, double, double) is or what it was used for? I assume memory optimisations for vectors

Edited December 3, 2018 by Cadiboo

[Animefan8888]

  On 12/3/2018 at 7:34 AM, Cadiboo said:

is or what it was used for? I assume memory optimisations for vectors

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Maybe not sure.

  On 12/3/2018 at 7:34 AM, Cadiboo said:

Does anyone know what the 1.12.2 replacement for the 1.7 method world.getWorldVec3Pool().getVecFromPool(double, double, double)

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Well in 1.7.10 it was Vec3.createVectorHelper however this doesn't appear to exist in 1.12.2. Maybe it isn't used anymore. What are you using it for?

[Cadiboo]

  On 12/3/2018 at 8:17 AM, Animefan8888 said:

Well in 1.7.10 it was Vec3.createVectorHelper however this doesn't appear to exist in 1.12.2. Maybe it isn't used anymore. What are you using it for?

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I'm porting someones mod to 1.12.2, I can show you a snippet the original code, but thats it (the mod was never open source, and this is the only snippet that the author shared).

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 public boolean renderSoftBlock(Block block, int x, int y, int z, RenderBlocks renderer, IBlockAccess world) {
     // Used for the drawing of the block's sides.
     Tessellator tessellator = Tessellator.instance;

     // The block's metadata.
     int meta = world.getBlockMetadata(x, y, z);

     // The basic block color.
     int color = block.colorMultiplier(world, x, y, z);
     float colorRed = (float) (color >> 16 & 255) / 255.0F;
     float colorGreen = (float) (color >> 8 & 255) / 255.0F;
     float colorBlue = (float) (color & 255) / 255.0F;

     // The shadow values.
     float shadowBottom = 0.6F;
     float shadowTop = 1.0F;
     float shadowLeft = 0.9F;
     float shadowRight = 0.8F;

     // The block's icon
     IIcon icon;
     if (!renderer.hasOverrideBlockTexture())
        icon = renderer.getBlockIconFromSideAndMetadata(block, 1, meta);
     else
        // Used for the crack texture
        icon = renderer.overrideBlockTexture;

     // The icon's UVs
     double minU = (double) icon.getMinU();
     double minV = (double) icon.getMinV();
     double maxU = (double) icon.getMaxU();
     double maxV = (double) icon.getMaxV();

     // The 8 points that make the block.
     Vec3[] points = new Vec3[8];
     points[0] = world.getWorldVec3Pool().getVecFromPool(0.0D, 0.0D, 0.0D);
     points[1] = world.getWorldVec3Pool().getVecFromPool(1.0D, 0.0D, 0.0D);
     points[2] = world.getWorldVec3Pool().getVecFromPool(1.0D, 0.0D, 1.0D);
     points[3] = world.getWorldVec3Pool().getVecFromPool(0.0D, 0.0D, 1.0D);
     points[4] = world.getWorldVec3Pool().getVecFromPool(0.0D, 1.0D, 0.0D);
     points[5] = world.getWorldVec3Pool().getVecFromPool(1.0D, 1.0D, 0.0D);
     points[6] = world.getWorldVec3Pool().getVecFromPool(1.0D, 1.0D, 1.0D);
     points[7] = world.getWorldVec3Pool().getVecFromPool(0.0D, 1.0D, 1.0D);

     // Loop through all the points:
     // Here everything will be 'smoothed'.
     for (int point = 0; point < 8; point++) {
         // Give the point the block's coordinates.
         points[point].xCoord += (double) x;
         points[point].yCoord += (double) y;
         points[point].zCoord += (double) z;

         // Check if the point is NOT intersecting with a manufactured block.
         if (!doesPointIntersectWithManufactured(world, points[point])) {
             // Check if the block's bottom side intersects with air.
             if (point < 4 && doesPointBottomIntersectWithAir(world, points[point]))
                 points[point].yCoord = (double) y + 1.0D;
             // Check if the block's top side intersects with air.
             else if (point >= 4 && doesPointTopIntersectWithAir(world, points[point]))
                 points[point].yCoord = (double) y;

             // Give the point some random offset.
             points[point] = givePointRoughness(points[point]);
         }
     }

     // Loop through all the sides of the block:
     for (int side = 0; side < 6; side++) {
         // The coordinates the side is facing to.
         int facingX = x;
         int facingY = y;
         int facingZ = z;
         if (side == 0)
            facingY--;
         else if (side == 1)
            facingY++;
         else if (side == 2)
            facingZ--;
         else if (side == 3)
            facingX++;
         else if (side == 4)
            facingZ++;
         else if (side == 5)
            facingX--;

         // Check if the side should be rendered:
         // This prevents a lot of lag!
         if (renderer.renderAllFaces || block.shouldSideBeRendered(world, facingX, facingY, facingZ, side)) {
             // When you lower this value the block will become darker.
             float colorFactor = 1.0F;

             // This are the vertices used for the side.
             Vec3 vertex0 = null;
             Vec3 vertex1 = null;
             Vec3 vertex2 = null;
             Vec3 vertex3 = null;
             if (side == 0) {
                 // Side 0 is the bottom side.
                 colorFactor = shadowBottom;
                 vertex0 = points[0];
                 vertex1 = points[1];
                 vertex2 = points[2];
                 vertex3 = points[3];

             } else if (side == 1) {
                 // Side 1 is the top side.
                 colorFactor = shadowTop;
                 vertex0 = points[7];
                 vertex1 = points[6];
                 vertex2 = points[5];
                 vertex3 = points[4];

             } else if (side == 2) {
                 colorFactor = shadowLeft;
                 vertex0 = points[1];
                 vertex1 = points[0];
                 vertex2 = points[4];
                 vertex3 = points[5];

             } else if (side == 3) {
                 colorFactor = shadowRight;
                 vertex0 = points[2];
                 vertex1 = points[1];
                 vertex2 = points[5];
                 vertex3 = points[6];
             } else if (side == 4) {
                 colorFactor = shadowLeft;
                 vertex0 = points[3];
                 vertex1 = points[2];
                 vertex2 = points[6];
                 vertex3 = points[7];
             } else if (side == 5) {
                 colorFactor = shadowRight;
                 vertex0 = points[0];
                 vertex1 = points[3];
                 vertex2 = points[7];
                 vertex3 = points[4];
             }

             // Here is the brightness of the block being set.
             tessellator.setBrightness(block.getMixedBrightnessForBlock(world, facingX, facingY, facingZ));
             // Here is the color of the block being set.
             tessellator.setColorOpaque_F(shadowTop * colorFactor * colorRed, shadowTop * colorFactor * colorGreen,
             shadowTop * colorFactor * colorBlue);

             // And finally the side is going to be rendered!
             tessellator.addVertexWithUV(vertex0.xCoord, vertex0.yCoord, vertex0.zCoord, minU, maxV);
             tessellator.addVertexWithUV(vertex1.xCoord, vertex1.yCoord, vertex1.zCoord, maxU, maxV);
             tessellator.addVertexWithUV(vertex2.xCoord, vertex2.yCoord, vertex2.zCoord, maxU, minV);
             tessellator.addVertexWithUV(vertex3.xCoord, vertex3.yCoord, vertex3.zCoord, minU, minV);
         }
     }

     return true;
 }

 

I'm currently making a new class called Vec3 and just instantiating new objects instead of using a pool. The code is currently super performance intensive, and I'm not worried about memory optimisations yet.

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public static class Vec3 {

	public double xCoord;
	public double yCoord;
	public double zCoord;

	public Vec3(final double xCoord, final double yCoord, final double zCoord) {
		this.xCoord = xCoord;
		this.yCoord = yCoord;
		this.zCoord = zCoord;
	}

}

 

 

[V0idWa1k3r]

  On 12/3/2018 at 12:14 PM, Cadiboo said:

I'm currently making a new class called Vec3

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Why? What's wrong with mojang's Vec3d? Or lwjgl's Vector3? You should not be reinventing the wheel.

  On 12/3/2018 at 12:14 PM, Cadiboo said:

The code is currently super performance intensive

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Unless you mean some other code instantinating an object that consists out of 3 primitives is nearly instant.

Edited December 3, 2018 by V0idWa1k3r

[Cadiboo]

Mojangs Vec3d is immutable, the code needs changeable vectors.

I also just got an out of memory error so I might need to start doing some optimising, though that could be due to something else. It had to do with shaders

That code I linked is being run for every block in a render chunk (it’s not as performance intensive as I thought, intelliJ hotswap seems to absolutely kill FPS tho)

Edited December 3, 2018 by Cadiboo

[Animefan8888]

  On 12/3/2018 at 12:14 PM, Cadiboo said:

I'm currently making a new class called Vec3 and just instantiating new objects instead of using a pool.

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Using a pool might be a good optimization later. But I don't see a reason for your Vec3 class to store doubles. The values dont ever seem to have decimals. 

[Cadiboo]

  On 12/3/2018 at 12:14 PM, Cadiboo said:

givePointRoughness(points[point]);

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This adds a random float value, sorry for not posting it, but I hadn’t reconstructed it yet and it wasn’t part of the original snippet. I’ll change the Vec3s to use floats.

 

Did the order of EnumFacing change since 1.7.10? 

  On 12/3/2018 at 12:14 PM, Cadiboo said:

int facingX = x; int facingY = y; int facingZ = z; if (side == 0) facingY--; else if (side == 1) facingY++; else if (side == 2) facingZ--; else if (side == 3) facingX++; else if (side == 4) facingZ++; else if (side == 5) facingX--;

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This isn’t working at all

[desht]

  On 12/3/2018 at 9:04 PM, Cadiboo said:

Did the order of EnumFacing change since 1.7.10? 

This isn’t working at all

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EnumFacing order is DUNSWE (which I'm pretty sure is the same as ForgeDirection from 1.7.10).

 

But EnumFacing and/or BlockPos provide all the methods you might need to get rid of that ugly (and wrong) bit of code.  Assuming the side int is in the expected DUNSWE order:

BlockPos newPos = new BlockPos(x, y, z).offset(EnumFacing.byIndex(side));
// then use newPos.getX() etc.

 

Edited December 5, 2018 by desht

[Cadiboo]

  On 12/5/2018 at 1:52 PM, desht said:

EnumFacing order is DUNSWE (which I'm pretty sure is the same as ForgeDirection from 1.7.10).

 

But EnumFacing and/or BlockPos provide all the methods you might need to get rid of that ugly (and wrong) bit of code.  Assuming the side int is in the expected DUNSWE order:

BlockPos newPos = new BlockPos(x, y, z).offset(EnumFacing.byIndex(side));
// then use newPos.getX() etc.

 

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All of that code was apparently completely useless and unnecessary in 1.12.2, and now I'm just using the original BlockPos.
The problem with the EnumFacings was actually that the vertices I had taken from the old code (and expected to be perfect) were completely broken for South and West.

Edited December 6, 2018 by Cadiboo