修正 tiledmap 的 simple.ts 中 MaxGridsLimit 计算错误.

[finscn]

虽然 写入buffer的顶点数据是6个, 但是决定 fillCount 上限的是 顶点的索引.

    fillBuffers (layer: TiledLayer, renderer: IBatcher): void {
        if (!layer || layer.tiledDataArray.length === 0) return;

        const dataArray = layer.tiledDataArray;

        // 当前渲染的数据
        const data = dataArray[layer._tiledDataArrayIdx] as TiledRenderData;
        const renderData = data.renderData;
        if (!renderData) return;
        const iBuf = renderData.chunk.meshBuffer.iData;

        let indexOffset = renderData.chunk.meshBuffer.indexOffset;
        let vertexId = renderData.chunk.vertexOffset;
        const quadCount = renderData.vertexCount / 4;
        for (let i = 0; i < quadCount; i += 1) {
            iBuf[indexOffset] = vertexId;
            iBuf[indexOffset + 1] = vertexId + 1;
            iBuf[indexOffset + 2] = vertexId + 2;
            iBuf[indexOffset + 3] = vertexId + 2;
            iBuf[indexOffset + 4] = vertexId + 1;
            iBuf[indexOffset + 5] = vertexId + 3;
            indexOffset += 6;
            vertexId += 4;
        }
        renderData.chunk.meshBuffer.indexOffset = indexOffset;
    }

也就是上述代码中的 vertexCount / 4 决定了 fillCount

最多是 65536 / 4 .

Re: #

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[github-actions]

Code Size Check Report

Wechat (WASM)	Before	After	Diff
2D Empty (legacy pipeline)	1009429 bytes	1009429 bytes	✅ 0 bytes
2D All (legacy pipeline)	2674774 bytes	2674753 bytes	👍 -21 bytes
2D All (new pipeline)	2765676 bytes	2765655 bytes	👍 -21 bytes
(2D + 3D) All	10022031 bytes	10022010 bytes	👍 -21 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16841090 bytes	16841069 bytes	👍 -21 bytes

Interface Check Report

This pull request does not change any public interfaces !