private void RunBoundsPhase(Mesh mesh, out Vector3 minBounds, out Vector3 maxBounds)
{
int[] meshBounds = new int[6];
BoundsBuffer.SetData(meshBounds);
MeshSampleComputeShader.Dispatch(ComputeBoundsKernel, Mathf.CeilToInt(mesh.triangles.Length / 64f), 1, 1);
BoundsBuffer.GetData(meshBounds);
const float packingMultiplier = 1000f;
minBounds = new Vector3(meshBounds[0] / packingMultiplier, meshBounds[1] / packingMultiplier, meshBounds[2] / packingMultiplier);
maxBounds = new Vector3(meshBounds[3] / packingMultiplier, meshBounds[4] / packingMultiplier, meshBounds[5] / packingMultiplier);
minBounds -= m_padding * Vector3.one;
maxBounds += m_padding * Vector3.one;
}
/// <summary>
/// Note: I chose to use buffers instead of writing to texture 3ds directly on the GPU because for some reason it's
/// stupidly complicated to write to a texture3d on the gpu and then get that data back to the cpu for serialization.
/// </summary>
private void RunSamplePhase(bool hasUVs, out float[] samples, out float[] packedUVs, Vector3 minBounds, Vector3 maxBounds)
{
MeshSampleComputeShader.SetVector(Properties.MinBounds_Vector3, minBounds);
MeshSampleComputeShader.SetVector(Properties.MaxBounds_Vector3, maxBounds);
int threadGroups = Mathf.CeilToInt(m_size / 8f);
MeshSampleComputeShader.Dispatch(GetTextureWholeKernel, threadGroups, threadGroups, threadGroups);
SamplesBuffer.GetData(m_samples);
samples = m_samples;
if (hasUVs)
{
PackedUVsBuffer.GetData(m_packedUVs);
packedUVs = m_packedUVs;
}
else
{
packedUVs = null;
}
}
