some examples?

[bezumnui]

Yeap. There is some javadoc.
For example will take Renderer3d#renderFilled
params:
start - The start coordinate of the block
dimensions - The dimensions of the block
color - The color of the filling

so I'm trying to call render by:
var filled = Renderer3d.renderFilled(new Vec3d(0 - .5, 0 - .5, 0 - .5), new Vec3d(1, 1, 1), Color.CYAN);
filled.drawWithVBO(Renderer3d.getEmptyMatrixStack());

and result is:

I know that my code is bad. Because I don't know how to use this method. Help me please :)

[0x3C50]

you're not passing in the context matrixstack correctly, the matrixstack holds all rotations and transformations, including camera rotation. where are you calling the renderer from?

[bezumnui]

ok. u are right) thank you. But example will be helpful. Something like:

Drawing cyan block overlay:

@Mixin(WorldRenderer.class)
public class WorldRendererMixin {
    @Inject(method = "drawBlockOutline", at = @At(value = "HEAD", target = "Lnet/minecraft/client/render/WorldRenderer;drawCuboidShapeOutline(Lnet/minecraft/client/util/math/MatrixStack;Lnet/minecraft/client/render/VertexConsumer;Lnet/minecraft/util/shape/VoxelShape;DDDFFFF)V"))
    public void drawBlockOutlineMixin(MatrixStack matrices, VertexConsumer vertexConsumer, Entity entity, double cameraX, double cameraY, double cameraZ, BlockPos pos, BlockState state, CallbackInfo ci) {
        //    creating a render object
        var filled = Renderer3d.renderFilled(new Vec3d(pos.getX(), pos.getY(), pos.getZ()), new Vec3d(1, 1, 1), Color.CYAN);
        //    drawing object
        filled.drawWithVBO(matrices);
        //    deleting object from heap
        filled.delete();
    }
}

[0x3C50]

ok. u are right) thank you. But example will be helpful. Something like:

Drawing cyan block overlay:

@Mixin(WorldRenderer.class)
public class WorldRendererMixin {
    @Inject(method = "drawBlockOutline", at = @At(value = "HEAD", target = "Lnet/minecraft/client/render/WorldRenderer;drawCuboidShapeOutline(Lnet/minecraft/client/util/math/MatrixStack;Lnet/minecraft/client/render/VertexConsumer;Lnet/minecraft/util/shape/VoxelShape;DDDFFFF)V"))
    public void drawBlockOutlineMixin(MatrixStack matrices, VertexConsumer vertexConsumer, Entity entity, double cameraX, double cameraY, double cameraZ, BlockPos pos, BlockState state, CallbackInfo ci) {
        //    creating a render object
        var filled = Renderer3d.renderFilled(new Vec3d(pos.getX(), pos.getY(), pos.getZ()), new Vec3d(1, 1, 1), Color.CYAN);
        //    drawing object
        filled.drawWithVBO(matrices);
        //    deleting object from heap
        filled.delete();
    }
}

I recommend not using drawWithVBO() if you're just drawing it once, that's overkill. VBOs are designed to cache big render actions so they don't have to be regenerated each time. For quick renders, don't use VBOs.

Example: Renderer3d.renderFilled(new Vec3d(pos.getX(), pos.getY(), pos.getZ()), new Vec3d(1, 1, 1), Color.CYAN).drawWithoutVBO(matrices);