terrainSource | 返回从每个地形收集的纹理数据的函数。 |
defaultColor |
sourceRenderTexture 的默认颜色。 |
blitMaterial | 用于复制数据的材质。如果为 null,则使用默认 blit 材质。 |
blitPass | 用于复制数据的材质通道。 |
beforeBlit | 要在从每个地形复制之前调用的可选操作。默认值为 null。 |
afterBlit | 要在从每个地形复制之后调用的可选操作。默认值为 null。 |
将用户指定的纹理数据收集到 sourceRenderTexture
中。
此函数从 PaintContext 中的所有地形瓦片收集纹理数据,并将这些数据合并到 sourceRenderTexture
中。
terrainSource
函数指定要从每个地形收集哪些数据。
Gather 假设 terrainSource
返回的纹理数据以类似于高度贴图和 Alpha 贴图的方式在地形瓦片上映射。
首先,函数将 sourceRenderTexture
清除为 /defaultColor/。
随后它使用以下步骤收集 PaintContext 中的每个瓦片:
1) 调用 terrainSource
以获取纹理。
2) 调用 /beforeBlit/。
3) 使用 blitMaterial
和 blitPass
将纹理复制到 sourceRenderTexture
中。
4) 调用 /afterBlit/。
另请参阅:PaintContext、PaintContext.Scatter。
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