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|
/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the implementation of the D3D9 versions of the
// Effect resource.
// This file also contains the related GAPID3D9 function implementations.
#include <algorithm>
#include "command_buffer/service/win/d3d9/d3d9_utils.h"
#include "command_buffer/service/win/d3d9/geometry_d3d9.h"
#include "command_buffer/service/win/d3d9/gapi_d3d9.h"
#include "command_buffer/service/win/d3d9/effect_d3d9.h"
#include "command_buffer/service/win/d3d9/sampler_d3d9.h"
#include "command_buffer/service/cross/effect_utils.h"
// TODO: remove link-dependency on D3DX.
namespace o3d {
namespace command_buffer {
// Logs the D3D effect error, from either the buffer, or GetLastError().
static void LogFXError(LPD3DXBUFFER error_buffer) {
if (error_buffer) {
LPVOID compile_errors = error_buffer->GetBufferPointer();
LOG(ERROR) << "Failed to compile effect: "
<< static_cast<char *>(compile_errors);
} else {
HLOCAL hLocal = NULL;
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
GetLastError(),
0,
reinterpret_cast<wchar_t*>(&hLocal),
0,
NULL);
wchar_t* msg = reinterpret_cast<wchar_t*>(LocalLock(hLocal));
LOG(ERROR) << "Failed to compile effect: " << msg;
LocalFree(hLocal);
}
}
EffectD3D9::EffectD3D9(GAPID3D9 *gapi,
ID3DXEffect *d3d_effect,
ID3DXConstantTable *fs_constant_table,
IDirect3DVertexShader9 *d3d_vertex_shader)
: gapi_(gapi),
d3d_effect_(d3d_effect),
fs_constant_table_(fs_constant_table),
d3d_vertex_shader_(d3d_vertex_shader),
sync_parameters_(false) {
for (unsigned int i = 0; i < kMaxSamplerUnits; ++i) {
samplers_[i] = kInvalidResource;
}
SetStreams();
}
// Releases the D3D effect.
EffectD3D9::~EffectD3D9() {
for (ParamList::iterator it = params_.begin(); it != params_.end(); ++it) {
(*it)->ResetEffect();
}
DCHECK(d3d_effect_);
d3d_effect_->Release();
DCHECK(fs_constant_table_);
fs_constant_table_->Release();
DCHECK(d3d_vertex_shader_);
d3d_vertex_shader_->Release();
}
// Compiles the effect, and checks that the effect conforms to what we expect
// (no extra technique or pass in the effect code, since one is implicitly added
// using the program entry points) and that it validates. If successful, wrap
// the D3D effect into a new EffectD3D9.
EffectD3D9 *EffectD3D9::Create(GAPID3D9 *gapi,
const String& effect_code,
const String& vertex_program_entry,
const String& fragment_program_entry) {
String prepared_effect = effect_code +
"technique Shaders { "
" pass p0 { "
" VertexShader = compile vs_2_0 " + vertex_program_entry + "();"
" PixelShader = compile ps_2_0 " + fragment_program_entry + "();"
" }"
"};";
ID3DXEffect *d3d_effect = NULL;
LPD3DXBUFFER error_buffer;
IDirect3DDevice9 *device = gapi->d3d_device();
if (gapi->D3DXCreateEffect(device,
prepared_effect.c_str(),
prepared_effect.size(),
NULL,
NULL,
0,
NULL,
&d3d_effect,
&error_buffer) != D3D_OK) {
LogFXError(error_buffer);
return NULL;
}
// check that .
D3DXEFFECT_DESC effect_desc;
HR(d3d_effect->GetDesc(&effect_desc));
if (effect_desc.Techniques != 1) {
LOG(ERROR) << "Only 1 technique is allowed in an effect.";
d3d_effect->Release();
return NULL;
}
D3DXHANDLE technique = d3d_effect->GetTechnique(0);
DCHECK(technique);
if (d3d_effect->ValidateTechnique(technique) != D3D_OK) {
LOG(ERROR) << "Technique doesn't validate.";
d3d_effect->Release();
return NULL;
}
D3DXTECHNIQUE_DESC technique_desc;
HR(d3d_effect->GetTechniqueDesc(technique, &technique_desc));
if (technique_desc.Passes != 1) {
LOG(ERROR) << "Only 1 pass is allowed in an effect.";
d3d_effect->Release();
return NULL;
}
d3d_effect->SetTechnique(technique);
D3DXHANDLE pass = d3d_effect->GetPass(technique, 0);
D3DXPASS_DESC pass_desc;
HR(d3d_effect->GetPassDesc(pass, &pass_desc));
ID3DXConstantTable *table = NULL;
HR(gapi->D3DXGetShaderConstantTable(pass_desc.pPixelShaderFunction,
&table));
if (!table) {
LOG(ERROR) << "Could not get the constant table.";
d3d_effect->Release();
return NULL;
}
IDirect3DVertexShader9 *d3d_vertex_shader = NULL;
HR(device->CreateVertexShader(pass_desc.pVertexShaderFunction,
&d3d_vertex_shader));
if (!d3d_vertex_shader) {
d3d_effect->Release();
table->Release();
DLOG(ERROR) << "Failed to create vertex shader";
return NULL;
}
return new EffectD3D9(gapi, d3d_effect, table, d3d_vertex_shader);
}
// Begins rendering with the effect, setting all the appropriate states.
bool EffectD3D9::Begin() {
UINT numpasses;
HR(d3d_effect_->Begin(&numpasses, 0));
HR(d3d_effect_->BeginPass(0));
sync_parameters_ = false;
return SetSamplers();
}
// Terminates rendering with the effect, resetting all the appropriate states.
void EffectD3D9::End() {
HR(d3d_effect_->EndPass());
HR(d3d_effect_->End());
}
// Gets the parameter count from the D3D effect description.
unsigned int EffectD3D9::GetParamCount() {
D3DXEFFECT_DESC effect_desc;
HR(d3d_effect_->GetDesc(&effect_desc));
return effect_desc.Parameters;
}
// Gets the number of input streams from the shader.
unsigned int EffectD3D9::GetStreamCount() {
return streams_.size();
}
// Retrieves the matching DataType from a D3D parameter description.
static effect_param::DataType GetDataTypeFromD3D(
const D3DXPARAMETER_DESC &desc) {
switch (desc.Type) {
case D3DXPT_FLOAT:
switch (desc.Class) {
case D3DXPC_SCALAR:
return effect_param::FLOAT1;
case D3DXPC_VECTOR:
switch (desc.Columns) {
case 2:
return effect_param::FLOAT2;
case 3:
return effect_param::FLOAT3;
case 4:
return effect_param::FLOAT4;
default:
return effect_param::UNKNOWN;
}
case D3DXPC_MATRIX_ROWS:
case D3DXPC_MATRIX_COLUMNS:
if (desc.Columns == 4 && desc.Rows == 4) {
return effect_param::MATRIX4;
} else {
return effect_param::UNKNOWN;
}
default:
return effect_param::UNKNOWN;
}
case D3DXPT_INT:
if (desc.Class == D3DXPC_SCALAR) {
return effect_param::INT;
} else {
return effect_param::UNKNOWN;
}
case D3DXPT_BOOL:
if (desc.Class == D3DXPC_SCALAR) {
return effect_param::BOOL;
} else {
return effect_param::UNKNOWN;
}
case D3DXPT_SAMPLER:
case D3DXPT_SAMPLER2D:
case D3DXPT_SAMPLER3D:
case D3DXPT_SAMPLERCUBE:
if (desc.Class == D3DXPC_OBJECT) {
return effect_param::SAMPLER;
} else {
return effect_param::UNKNOWN;
}
case D3DXPT_TEXTURE:
case D3DXPT_TEXTURE1D:
case D3DXPT_TEXTURE2D:
case D3DXPT_TEXTURE3D:
case D3DXPT_TEXTURECUBE:
if (desc.Class == D3DXPC_OBJECT) {
return effect_param::TEXTURE;
} else {
return effect_param::UNKNOWN;
}
default:
return effect_param::UNKNOWN;
}
}
// Gets a handle to the selected parameter, and wraps it into an
// EffectParamD3D9 if successful.
EffectParamD3D9 *EffectD3D9::CreateParam(unsigned int index) {
D3DXHANDLE handle = d3d_effect_->GetParameter(NULL, index);
if (!handle) return NULL;
return EffectParamD3D9::Create(this, handle);
}
// Gets a handle to the selected parameter, and wraps it into an
// EffectParamD3D9 if successful.
EffectParamD3D9 *EffectD3D9::CreateParamByName(const char *name) {
D3DXHANDLE handle = d3d_effect_->GetParameterByName(NULL, name);
if (!handle) return NULL;
return EffectParamD3D9::Create(this, handle);
}
bool EffectD3D9::CommitParameters() {
if (sync_parameters_) {
sync_parameters_ = false;
d3d_effect_->CommitChanges();
return SetSamplers();
} else {
return true;
}
}
bool EffectD3D9::SetSamplers() {
IDirect3DDevice9 *d3d_device = gapi_->d3d_device();
bool result = true;
for (unsigned int i = 0; i < kMaxSamplerUnits; ++i) {
SamplerD3D9 *sampler = gapi_->GetSampler(samplers_[i]);
if (sampler) {
result &= sampler->ApplyStates(gapi_, i);
} else {
HR(d3d_device->SetTexture(i, NULL));
}
}
return result;
}
bool EffectD3D9::SetStreams() {
if (!d3d_vertex_shader_) {
return false;
}
UINT size;
d3d_vertex_shader_->GetFunction(NULL, &size);
scoped_array<DWORD> function(new DWORD[size]);
d3d_vertex_shader_->GetFunction(function.get(), &size);
UINT num_semantics;
HR(gapi_->D3DXGetShaderInputSemantics(function.get(),
NULL,
&num_semantics));
scoped_array<D3DXSEMANTIC> semantics(new D3DXSEMANTIC[num_semantics]);
HR(gapi_->D3DXGetShaderInputSemantics(function.get(),
semantics.get(),
&num_semantics));
streams_.resize(num_semantics);
for (UINT i = 0; i < num_semantics; ++i) {
vertex_struct::Semantic semantic;
unsigned int semantic_index;
if (D3DSemanticToCBSemantic(static_cast<D3DDECLUSAGE>(semantics[i].Usage),
static_cast<int>(semantics[i].UsageIndex),
&semantic, &semantic_index)) {
streams_[i].semantic = semantic;
streams_[i].semantic_index = semantic_index;
}
}
return true;
}
void EffectD3D9::LinkParam(EffectParamD3D9 *param) {
params_.push_back(param);
}
void EffectD3D9::UnlinkParam(EffectParamD3D9 *param) {
std::remove(params_.begin(), params_.end(), param);
}
// Fills the Desc structure, appending name and semantic if any, and if enough
// room is available in the buffer.
bool EffectD3D9::GetStreamDesc(unsigned int index,
unsigned int size,
void *data) {
using effect_stream::Desc;
if (size < sizeof(Desc)) // NOLINT
return false;
Desc *desc = static_cast<Desc *>(data);
*desc = streams_[index];
return true;
}
EffectParamD3D9::EffectParamD3D9(effect_param::DataType data_type,
EffectD3D9 *effect,
D3DXHANDLE handle)
: EffectParam(data_type),
effect_(effect),
handle_(handle),
sampler_units_(NULL),
sampler_unit_count_(0) {
DCHECK(effect_);
effect_->LinkParam(this);
}
EffectParamD3D9::~EffectParamD3D9() {
if (effect_) effect_->UnlinkParam(this);
}
EffectParamD3D9 *EffectParamD3D9::Create(EffectD3D9 *effect,
D3DXHANDLE handle) {
DCHECK(effect);
D3DXPARAMETER_DESC desc;
HR(effect->d3d_effect_->GetParameterDesc(handle, &desc));
effect_param::DataType data_type = GetDataTypeFromD3D(desc);
EffectParamD3D9 *param = new EffectParamD3D9(data_type, effect, handle);
if (data_type == effect_param::SAMPLER) {
ID3DXConstantTable *table = effect->fs_constant_table_;
DCHECK(table);
D3DXHANDLE sampler_handle = table->GetConstantByName(NULL, desc.Name);
if (sampler_handle) {
D3DXCONSTANT_DESC desc_array[kMaxSamplerUnits];
unsigned int num_desc = kMaxSamplerUnits;
table->GetConstantDesc(sampler_handle, desc_array, &num_desc);
// We have no good way of querying how many descriptions would really be
// returned as we're capping the number to kMaxSamplerUnits (which should
// be more than sufficient). If however we do end up with the max number
// there's a chance that there were actually more so let's log it.
if (num_desc == kMaxSamplerUnits) {
DLOG(WARNING) << "Number of constant descriptions might have exceeded "
<< "the maximum of " << kMaxSamplerUnits;
}
param->sampler_unit_count_ = 0;
if (num_desc > 0) {
param->sampler_units_.reset(new unsigned int[num_desc]);
for (unsigned int desc_index = 0; desc_index < num_desc; desc_index++) {
D3DXCONSTANT_DESC constant_desc = desc_array[desc_index];
if (constant_desc.Class == D3DXPC_OBJECT &&
(constant_desc.Type == D3DXPT_SAMPLER ||
constant_desc.Type == D3DXPT_SAMPLER2D ||
constant_desc.Type == D3DXPT_SAMPLER3D ||
constant_desc.Type == D3DXPT_SAMPLERCUBE)) {
param->sampler_units_[param->sampler_unit_count_++] =
constant_desc.RegisterIndex;
}
}
}
}
// if the sampler hasn't been found in the constant table, that means it
// isn't referenced, hence it doesn't use any sampler unit.
}
return param;
}
// Fills the Desc structure, appending name and semantic if any, and if enough
// room is available in the buffer.
bool EffectParamD3D9::GetDesc(unsigned int size, void *data) {
using effect_param::Desc;
if (size < sizeof(Desc)) // NOLINT
return false;
if (!effect_)
return false;
ID3DXEffect *d3d_effect = effect_->d3d_effect_;
D3DXPARAMETER_DESC d3d_desc;
HR(d3d_effect->GetParameterDesc(handle_, &d3d_desc));
unsigned int name_size =
d3d_desc.Name ? static_cast<unsigned int>(strlen(d3d_desc.Name)) + 1 : 0;
unsigned int semantic_size = d3d_desc.Semantic ?
static_cast<unsigned int>(strlen(d3d_desc.Semantic)) + 1 : 0;
unsigned int total_size = sizeof(Desc) + name_size + semantic_size; // NOLINT
Desc *desc = static_cast<Desc *>(data);
memset(desc, 0, sizeof(*desc));
desc->size = total_size;
desc->data_type = data_type();
desc->data_size = GetDataSize(data_type());
desc->name_offset = 0;
desc->name_size = name_size;
desc->num_elements = d3d_desc.Elements;
desc->semantic_offset = 0;
desc->semantic_size = semantic_size;
unsigned int current_offset = sizeof(Desc);
if (d3d_desc.Name && current_offset + name_size <= size) {
desc->name_offset = current_offset;
memcpy(static_cast<char *>(data) + current_offset,
d3d_desc.Name, name_size);
current_offset += name_size;
}
if (d3d_desc.Semantic && current_offset + semantic_size <= size) {
desc->semantic_offset = current_offset;
memcpy(static_cast<char *>(data) + current_offset,
d3d_desc.Semantic, semantic_size);
current_offset += semantic_size;
}
return true;
}
// Sets the data into the D3D effect parameter, using the appropriate D3D call.
bool EffectParamD3D9::SetData(GAPID3D9 *gapi,
unsigned int size,
const void * data) {
if (!effect_)
return false;
ID3DXEffect *d3d_effect = effect_->d3d_effect_;
effect_param::DataType type = data_type();
if (size < effect_param::GetDataSize(type)) return false;
switch (type) {
case effect_param::FLOAT1:
HR(d3d_effect->SetFloat(handle_, *static_cast<const float *>(data)));
break;
case effect_param::FLOAT2:
HR(d3d_effect->SetFloatArray(handle_, static_cast<const float *>(data),
2));
break;
case effect_param::FLOAT3:
HR(d3d_effect->SetFloatArray(handle_, static_cast<const float *>(data),
3));
break;
case effect_param::FLOAT4:
HR(d3d_effect->SetFloatArray(handle_, static_cast<const float *>(data),
4));
break;
case effect_param::MATRIX4:
HR(d3d_effect->SetMatrix(handle_,
reinterpret_cast<const D3DXMATRIX *>(data)));
break;
case effect_param::INT:
HR(d3d_effect->SetInt(handle_, *static_cast<const int *>(data)));
break;
case effect_param::BOOL:
HR(d3d_effect->SetBool(handle_, *static_cast<const bool *>(data)?1:0));
break;
case effect_param::SAMPLER: {
ResourceID id = *static_cast<const ResourceID *>(data);
for (unsigned int i = 0; i < sampler_unit_count_; ++i) {
effect_->samplers_[sampler_units_[i]] = id;
}
break;
}
case effect_param::TEXTURE: {
// TODO(rlp): finish
break;
}
default:
DLOG(ERROR) << "Invalid parameter type.";
return false;
}
if (effect_ == gapi->current_effect()) {
effect_->sync_parameters_ = true;
}
return true;
}
// Calls EffectD3D9::Create, and assign the result to the resource ID.
// If changing the current effect, dirty it.
BufferSyncInterface::ParseError GAPID3D9::CreateEffect(
ResourceID id,
unsigned int size,
const void *data) {
if (id == current_effect_id_) DirtyEffect();
// Even though Assign would Destroy the effect at id, we do it explicitly in
// case the creation fails.
effects_.Destroy(id);
// Data is vp_main \0 fp_main \0 effect_text.
String vertex_program_entry;
String fragment_program_entry;
String effect_code;
if (!ParseEffectData(size, data,
&vertex_program_entry,
&fragment_program_entry,
&effect_code)) {
return BufferSyncInterface::kParseInvalidArguments;
}
EffectD3D9 * effect = EffectD3D9::Create(this, effect_code,
vertex_program_entry,
fragment_program_entry);
if (!effect) return BufferSyncInterface::kParseInvalidArguments;
effects_.Assign(id, effect);
return BufferSyncInterface::kParseNoError;
}
// Destroys the Effect resource.
// If destroying the current effect, dirty it.
BufferSyncInterface::ParseError GAPID3D9::DestroyEffect(ResourceID id) {
if (id == current_effect_id_) DirtyEffect();
return effects_.Destroy(id) ?
BufferSyncInterface::kParseNoError :
BufferSyncInterface::kParseInvalidArguments;
}
// Sets the current effect ID, dirtying the current effect.
BufferSyncInterface::ParseError GAPID3D9::SetEffect(ResourceID id) {
DirtyEffect();
current_effect_id_ = id;
return BufferSyncInterface::kParseNoError;
}
// Gets the param count from the effect and store it in the memory buffer.
BufferSyncInterface::ParseError GAPID3D9::GetParamCount(
ResourceID id,
unsigned int size,
void *data) {
EffectD3D9 *effect = effects_.Get(id);
if (!effect || size < sizeof(Uint32)) // NOLINT
return BufferSyncInterface::kParseInvalidArguments;
*static_cast<Uint32 *>(data) = effect->GetParamCount();
return BufferSyncInterface::kParseNoError;
}
BufferSyncInterface::ParseError GAPID3D9::CreateParam(
ResourceID param_id,
ResourceID effect_id,
unsigned int index) {
EffectD3D9 *effect = effects_.Get(effect_id);
if (!effect) return BufferSyncInterface::kParseInvalidArguments;
EffectParamD3D9 *param = effect->CreateParam(index);
if (!param) return BufferSyncInterface::kParseInvalidArguments;
effect_params_.Assign(param_id, param);
return BufferSyncInterface::kParseNoError;
}
BufferSyncInterface::ParseError GAPID3D9::CreateParamByName(
ResourceID param_id,
ResourceID effect_id,
unsigned int size,
const void *name) {
EffectD3D9 *effect = effects_.Get(effect_id);
if (!effect) return BufferSyncInterface::kParseInvalidArguments;
std::string string_name(static_cast<const char *>(name), size);
EffectParamD3D9 *param = effect->CreateParamByName(string_name.c_str());
if (!param) return BufferSyncInterface::kParseInvalidArguments;
effect_params_.Assign(param_id, param);
return BufferSyncInterface::kParseNoError;
}
BufferSyncInterface::ParseError GAPID3D9::DestroyParam(ResourceID id) {
return effect_params_.Destroy(id) ?
BufferSyncInterface::kParseNoError :
BufferSyncInterface::kParseInvalidArguments;
}
BufferSyncInterface::ParseError GAPID3D9::SetParamData(
ResourceID id,
unsigned int size,
const void *data) {
EffectParamD3D9 *param = effect_params_.Get(id);
if (!param) return BufferSyncInterface::kParseInvalidArguments;
return param->SetData(this, size, data) ?
BufferSyncInterface::kParseNoError :
BufferSyncInterface::kParseInvalidArguments;
}
BufferSyncInterface::ParseError GAPID3D9::GetParamDesc(
ResourceID id,
unsigned int size,
void *data) {
EffectParamD3D9 *param = effect_params_.Get(id);
if (!param) return BufferSyncInterface::kParseInvalidArguments;
return param->GetDesc(size, data) ?
BufferSyncInterface::kParseNoError :
BufferSyncInterface::kParseInvalidArguments;
}
// Gets the stream count from the effect and stores it in the memory buffer.
BufferSyncInterface::ParseError GAPID3D9::GetStreamCount(
ResourceID id,
unsigned int size,
void *data) {
EffectD3D9 *effect = effects_.Get(id);
if (!effect || size < sizeof(Uint32)) // NOLINT
return BufferSyncInterface::kParseInvalidArguments;
*static_cast<Uint32 *>(data) = effect->GetStreamCount();
return BufferSyncInterface::kParseNoError;
}
BufferSyncInterface::ParseError GAPID3D9::GetStreamDesc(
ResourceID id,
unsigned int index,
unsigned int size,
void *data) {
EffectD3D9 *effect = effects_.Get(id);
if (!effect) return BufferSyncInterface::kParseInvalidArguments;
return effect->GetStreamDesc(index, size, data) ?
BufferSyncInterface::kParseNoError :
BufferSyncInterface::kParseInvalidArguments;
}
// If the current effect is valid, call End on it, and tag for revalidation.
void GAPID3D9::DirtyEffect() {
if (validate_effect_) return;
DCHECK(current_effect_);
current_effect_->End();
current_effect_ = NULL;
validate_effect_ = true;
}
// Gets the current effect, and calls Begin on it (if successful).
// Should only be called if the current effect is not valid.
bool GAPID3D9::ValidateEffect() {
DCHECK(validate_effect_);
DCHECK(!current_effect_);
current_effect_ = effects_.Get(current_effect_id_);
if (!current_effect_) return false;
validate_effect_ = false;
return current_effect_->Begin();
}
} // namespace command_buffer
} // namespace o3d
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