public ClipMaterialPool(Material material)
{
this.small = new Material(material);
this.medium = new Material(material);
this.large = new Material(material);
this.huge = new Material(material);
this.massive = new Material(material);
this.small.EnableKeyword("BATCH_SIZE_SMALL");
this.medium.EnableKeyword("BATCH_SIZE_MEDIUM");
this.large.EnableKeyword("BATCH_SIZE_LARGE");
this.huge.EnableKeyword("BATCH_SIZE_HUGE");
this.massive.EnableKeyword("BATCH_SIZE_MASSIVE");
this.smallBlock = new ClipPropertyBlock(small, RenderContext.k_ObjectCount_Small);
this.mediumBlock = new ClipPropertyBlock(medium, RenderContext.k_ObjectCount_Medium);
this.largeBlock = new ClipPropertyBlock(large, RenderContext.k_ObjectCount_Large);
this.hugeBlock = new ClipPropertyBlock(huge, RenderContext.k_ObjectCount_Huge);
this.massiveBlock = new ClipPropertyBlock(massive, RenderContext.k_ObjectCount_Massive);
}
// depth buffer means our regions are locked per channel
// 2 options: 1. each channel is its own set of draw calls, this is easy but maybe not as fast. do this as a first pass
// 2. try to re-use regions for different channels, almost certainly leads to less throughput but faster since we don't need extra draw calls
// probably means we have sub-sorting regions, ie large packers would have sub-packers
// would definitely want to sort by size in that case and first try to pack larger regions into themselves
// would likely update rect packer to be channel aware, when trying to place next item instead of moving over try colliding a different channel instead
public void Clip(Camera camera, CommandBuffer commandBuffer)
{
// breaks on refresh if we don't do this :(
this.clearMaterial.SetColor(s_Color, Color.white);
this.clearCountMaterial.SetColor(s_Color, new Color(0, 0, 0, 0));
requireRegionCounting = false;
for (int i = 0; i < batchesToRender.size; i++)
{
batchesToRender[i].pooledMesh.Release();
StructList <Matrix4x4> .Release(ref batchesToRender.array[i].transforms);
StructList <Vector4> .Release(ref batchesToRender.array[i].objectData);
StructList <Vector4> .Release(ref batchesToRender.array[i].colorData);
}
batchesToRender.Clear();
Gather();
Vector3 cameraOrigin = camera.transform.position;
cameraOrigin.x -= 0.5f * Screen.width;
cameraOrigin.y += (0.5f * Screen.height);
cameraOrigin.z += 2;
Matrix4x4 origin = Matrix4x4.TRS(cameraOrigin, Quaternion.identity, Vector3.one);
LightList <ClipData> texturedClippers = LightList <ClipData> .Get();
regionMesh?.Release();
regionMesh = GetRegionMesh(out requireRegionCounting);
clipTexture = RenderTexture.GetTemporary(Screen.width, Screen.height, 24, RenderTextureFormat.Default); // todo -- use lower resolution
#if DEBUG
commandBuffer.BeginSample("UIFora Clip Draw");
#endif
commandBuffer.SetRenderTarget(clipTexture);
// probably don't need this actually, can bake it into clear. keep for debugging
commandBuffer.ClearRenderTarget(true, true, Color.black);
commandBuffer.DrawMesh(regionMesh.mesh, origin, clearMaterial, 0, 0);
// todo -- handle multiple shapes from one path
ClipBatch batch = new ClipBatch();
batch.transforms = StructList <Matrix4x4> .Get();
batch.colorData = StructList <Vector4> .Get();
batch.objectData = StructList <Vector4> .Get();
for (int i = 0; i < clippers.size; i++)
{
ClipData clipData = clippers[i];
Path2D clipPath = clipData.clipPath;
if (clipPath == null)
{
// todo if transform is not identity we need to generate a rotated or skewed rect for the clip shape
continue;
}
clipPath.UpdateGeometry(); // should early out if no update required
if (AnyShapeUsesTextures(clipPath))
{
// todo -- handle textures
// todo -- handle text
continue;
}
batch = DrawShapesInPath(batch, clipPath, clipData, clipData);
for (int j = 0; j < clipData.dependents.size; j++)
{
batch = DrawShapesInPath(batch, clipPath, clipData, clipData.dependents[j]);
}
}
FinalizeBatch(batch, false);
for (int i = 0; i < batchesToRender.size; i++)
{
ref ClipBatch clipBatch = ref batchesToRender.array[i];
ClipPropertyBlock propertyBlock = clipMaterialPool.GetPropertyBlock(clipBatch.transforms.size);
propertyBlock.SetData(clipBatch);
commandBuffer.DrawMesh(clipBatch.pooledMesh.mesh, origin, clipDrawMaterial, 0, 0, propertyBlock.matBlock);
}