void CombinePassPingPong(CommandBuffer buf)
{
if (_combineMaterial == null)
{
return;
}
var lodCount = OceanRenderer.Instance.CurrentLodCount;
const int shaderPassCombineIntoAux = 0, shaderPassCopyResultBack = 1;
// combine waves
for (int lodIdx = lodCount - 1; lodIdx >= 0; lodIdx--)
{
// The per-octave wave buffers
BindWaveBuffer(_combineMaterial[lodIdx]);
// Bind this LOD data (displacements). Option to disable the combine pass - very useful debugging feature.
if (_shapeCombinePass)
{
Bind(_combineMaterial[lodIdx]);
}
else
{
_combineMaterial[lodIdx].SetTexture(GetParamIdSampler(), TextureArrayHelpers.BlackTextureArray);
}
// Dynamic waves
LodDataMgrDynWaves.Bind(_combineMaterial[lodIdx]);
if (OceanRenderer.Instance._lodDataDynWaves != null)
{
OceanRenderer.Instance._lodDataDynWaves.BindCopySettings(_combineMaterial[lodIdx]);
}
// Flow
LodDataMgrFlow.Bind((_combineMaterial[lodIdx]));
_combineMaterial[lodIdx].SetInt(sp_LD_SliceIndex, lodIdx);
_combineMaterial[lodIdx].SetBuffer(OceanRenderer.sp_cascadeData, OceanRenderer.Instance._bufCascadeDataTgt);
_combineMaterial[lodIdx].SetBuffer(OceanRenderer.sp_perCascadeInstanceData, OceanRenderer.Instance._bufPerCascadeInstanceData);
// Combine this LOD's waves with waves from the LODs above into auxiliary combine buffer
buf.SetRenderTarget(_combineBuffer);
buf.DrawProcedural(Matrix4x4.identity, _combineMaterial[lodIdx].material, shaderPassCombineIntoAux, MeshTopology.Triangles, 3);
// Copy combine buffer back to lod texture array
buf.SetRenderTarget(_targets, 0, CubemapFace.Unknown, lodIdx);
_combineMaterial[lodIdx].SetTexture(Shader.PropertyToID("_CombineBuffer"), _combineBuffer);
buf.DrawProcedural(Matrix4x4.identity, _combineMaterial[lodIdx].material, shaderPassCopyResultBack, MeshTopology.Triangles, 3);
}
}
void CombinePassCompute(CommandBuffer buf)
{
var lodCount = OceanRenderer.Instance.CurrentLodCount;
int combineShaderKernel = krnl_ShapeCombine;
int combineShaderKernel_lastLOD = krnl_ShapeCombine_DISABLE_COMBINE;
{
bool isFlowOn = OceanRenderer.Instance._lodDataFlow != null;
bool isDynWavesOn = OceanRenderer.Instance._lodDataDynWaves != null;
// set the shader kernels that we will use.
if (isFlowOn && isDynWavesOn)
{
combineShaderKernel = krnl_ShapeCombine_FLOW_ON_DYNAMIC_WAVE_SIM_ON;
combineShaderKernel_lastLOD = krnl_ShapeCombine_FLOW_ON_DYNAMIC_WAVE_SIM_ON_DISABLE_COMBINE;
}
else if (isFlowOn)
{
combineShaderKernel = krnl_ShapeCombine_FLOW_ON;
combineShaderKernel_lastLOD = krnl_ShapeCombine_FLOW_ON_DISABLE_COMBINE;
}
else if (isDynWavesOn)
{
combineShaderKernel = krnl_ShapeCombine_DYNAMIC_WAVE_SIM_ON;
combineShaderKernel_lastLOD = krnl_ShapeCombine_DYNAMIC_WAVE_SIM_ON_DISABLE_COMBINE;
}
}
// combine waves
for (int lodIdx = lodCount - 1; lodIdx >= 0; lodIdx--)
{
int selectedShaderKernel;
if (lodIdx < lodCount - 1 && _shapeCombinePass)
{
selectedShaderKernel = combineShaderKernel;
}
else
{
selectedShaderKernel = combineShaderKernel_lastLOD;
}
_combineProperties.Initialise(buf, _combineShader, selectedShaderKernel);
// The per-octave wave buffers
BindWaveBuffer(_combineProperties);
// Bind this LOD data (displacements)
Bind(_combineProperties);
// Dynamic waves
LodDataMgrDynWaves.Bind(_combineProperties);
if (OceanRenderer.Instance._lodDataDynWaves != null)
{
OceanRenderer.Instance._lodDataDynWaves.BindCopySettings(_combineProperties);
}
// Flow
LodDataMgrFlow.Bind((_combineProperties));
// Set the animated waves texture where the results will be combined.
_combineProperties.SetTexture(
sp_LD_TexArray_AnimatedWaves_Compute,
DataTexture
);
_combineProperties.SetInt(sp_LD_SliceIndex, lodIdx);
buf.DispatchCompute(_combineShader, selectedShaderKernel,
OceanRenderer.Instance.LodDataResolution / THREAD_GROUP_SIZE_X,
OceanRenderer.Instance.LodDataResolution / THREAD_GROUP_SIZE_Y,
1);
}
}