本文整理汇总了C++中VertexDecl::getOffset方法的典型用法代码示例。如果您正苦于以下问题：C++ VertexDecl::getOffset方法的具体用法？C++ VertexDecl::getOffset怎么用？C++ VertexDecl::getOffset使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类VertexDecl的用法示例。
在下文中一共展示了VertexDecl::getOffset方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: vertexUnpack
void vertexUnpack(float _output[4], Attrib::Enum _attr, const VertexDecl& _decl, const void* _data, uint32_t _index)
{
if (!_decl.has(_attr) )
{
memset(_output, 0, 4*sizeof(float) );
return;
}
uint32_t stride = _decl.getStride();
uint8_t* data = (uint8_t*)_data + _index*stride + _decl.getOffset(_attr);
uint8_t num;
AttribType::Enum type;
bool normalized;
bool asInt;
_decl.decode(_attr, num, type, normalized, asInt);
switch (type)
{
default:
case AttribType::Uint8:
{
uint8_t* packed = (uint8_t*)data;
if (asInt)
{
switch (num)
{
default: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
case 3: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
case 2: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
case 1: *_output++ = (float(*packed++) - 128.0f)*1.0f/127.0f;
}
}
else
{
switch (num)
{
default: *_output++ = float(*packed++)*1.0f/255.0f;
case 3: *_output++ = float(*packed++)*1.0f/255.0f;
case 2: *_output++ = float(*packed++)*1.0f/255.0f;
case 1: *_output++ = float(*packed++)*1.0f/255.0f;
}
}
}
break;
case AttribType::Int16:
{
int16_t* packed = (int16_t*)data;
if (asInt)
{
switch (num)
{
default: *_output++ = float(*packed++)*1.0f/32767.0f;
case 3: *_output++ = float(*packed++)*1.0f/32767.0f;
case 2: *_output++ = float(*packed++)*1.0f/32767.0f;
case 1: *_output++ = float(*packed++)*1.0f/32767.0f;
}
}
else
{
switch (num)
{
default: *_output++ = (float(*packed++) + 32768.0f)*1.0f/65535.0f;
case 3: *_output++ = (float(*packed++) + 32768.0f)*1.0f/65535.0f;
case 2: *_output++ = (float(*packed++) + 32768.0f)*1.0f/65535.0f;
case 1: *_output++ = (float(*packed++) + 32768.0f)*1.0f/65535.0f;
}
}
}
break;
case AttribType::Half:
{
uint16_t* packed = (uint16_t*)data;
switch (num)
{
default: *_output++ = bx::halfToFloat(*packed++);
case 3: *_output++ = bx::halfToFloat(*packed++);
case 2: *_output++ = bx::halfToFloat(*packed++);
case 1: *_output++ = bx::halfToFloat(*packed++);
}
}
break;
case AttribType::Float:
memcpy(_output, data, num*sizeof(float) );
_output += num;
break;
}
switch (num)
{
case 1: *_output++ = 0.0f;
case 2: *_output++ = 0.0f;
case 3: *_output++ = 0.0f;
default: break;
}
}示例2: vertexConvert
void vertexConvert(const VertexDecl& _destDecl, void* _destData, const VertexDecl& _srcDecl, const void* _srcData, uint32_t _num)
{
if (_destDecl.m_hash == _srcDecl.m_hash)
{
memcpy(_destData, _srcData, _srcDecl.getSize(_num) );
return;
}
struct ConvertOp
{
enum Enum
{
Set,
Copy,
Convert,
};
Attrib::Enum attr;
Enum op;
uint32_t src;
uint32_t dest;
uint32_t size;
};
ConvertOp convertOp[Attrib::Count];
uint32_t numOps = 0;
for (uint32_t ii = 0; ii < Attrib::Count; ++ii)
{
Attrib::Enum attr = (Attrib::Enum)ii;
if (_destDecl.has(attr) )
{
ConvertOp& cop = convertOp[numOps];
cop.attr = attr;
cop.dest = _destDecl.getOffset(attr);
uint8_t num;
AttribType::Enum type;
bool normalized;
bool asInt;
_destDecl.decode(attr, num, type, normalized, asInt);
cop.size = (*s_attribTypeSize[0])[type][num-1];
if (_srcDecl.has(attr) )
{
cop.src = _srcDecl.getOffset(attr);
cop.op = _destDecl.m_attributes[attr] == _srcDecl.m_attributes[attr] ? ConvertOp::Copy : ConvertOp::Convert;
}
else
{
cop.op = ConvertOp::Set;
}
++numOps;
}
}
if (0 < numOps)
{
const uint8_t* src = (const uint8_t*)_srcData;
uint32_t srcStride = _srcDecl.getStride();
uint8_t* dest = (uint8_t*)_destData;
uint32_t destStride = _destDecl.getStride();
float unpacked[4];
for (uint32_t ii = 0; ii < _num; ++ii)
{
for (uint32_t jj = 0; jj < numOps; ++jj)
{
const ConvertOp& cop = convertOp[jj];
switch (cop.op)
{
case ConvertOp::Set:
memset(dest + cop.dest, 0, cop.size);
break;
case ConvertOp::Copy:
memcpy(dest + cop.dest, src + cop.src, cop.size);
break;
case ConvertOp::Convert:
vertexUnpack(unpacked, cop.attr, _srcDecl, src);
vertexPack(unpacked, true, cop.attr, _destDecl, dest);
break;
}
}
src += srcStride;
dest += destStride;
}
}
}示例3: vertexPack
void vertexPack(const float _input[4], bool _inputNormalized, Attrib::Enum _attr, const VertexDecl& _decl, void* _data, uint32_t _index)
{
if (!_decl.has(_attr) )
{
return;
}
uint32_t stride = _decl.getStride();
uint8_t* data = (uint8_t*)_data + _index*stride + _decl.getOffset(_attr);
uint8_t num;
AttribType::Enum type;
bool normalized;
bool asInt;
_decl.decode(_attr, num, type, normalized, asInt);
switch (type)
{
default:
case AttribType::Uint8:
{
uint8_t* packed = (uint8_t*)data;
if (_inputNormalized)
{
if (asInt)
{
switch (num)
{
default: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
case 3: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
case 2: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
case 1: *packed++ = uint8_t(*_input++ * 127.0f + 128.0f);
}
}
else
{
switch (num)
{
default: *packed++ = uint8_t(*_input++ * 255.0f);
case 3: *packed++ = uint8_t(*_input++ * 255.0f);
case 2: *packed++ = uint8_t(*_input++ * 255.0f);
case 1: *packed++ = uint8_t(*_input++ * 255.0f);
}
}
}
else
{
switch (num)
{
default: *packed++ = uint8_t(*_input++);
case 3: *packed++ = uint8_t(*_input++);
case 2: *packed++ = uint8_t(*_input++);
case 1: *packed++ = uint8_t(*_input++);
}
}
}
break;
case AttribType::Int16:
{
int16_t* packed = (int16_t*)data;
if (_inputNormalized)
{
if (asInt)
{
switch (num)
{
default: *packed++ = int16_t(*_input++ * 32767.0f);
case 3: *packed++ = int16_t(*_input++ * 32767.0f);
case 2: *packed++ = int16_t(*_input++ * 32767.0f);
case 1: *packed++ = int16_t(*_input++ * 32767.0f);
}
}
else
{
switch (num)
{
default: *packed++ = int16_t(*_input++ * 65535.0f - 32768.0f);
case 3: *packed++ = int16_t(*_input++ * 65535.0f - 32768.0f);
case 2: *packed++ = int16_t(*_input++ * 65535.0f - 32768.0f);
case 1: *packed++ = int16_t(*_input++ * 65535.0f - 32768.0f);
}
}
}
else
{
switch (num)
{
default: *packed++ = int16_t(*_input++);
case 3: *packed++ = int16_t(*_input++);
case 2: *packed++ = int16_t(*_input++);
case 1: *packed++ = int16_t(*_input++);
}
}
}
break;
case AttribType::Half:
{
uint16_t* packed = (uint16_t*)data;
//.........这里部分代码省略.........