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#include "drape/binding_info.hpp"
#include "drape/gl_includes.hpp"
#include "base/assert.hpp"
namespace dp
{
namespace
{
uint16_t SizeOfType(glConst type)
{
if (type == gl_const::GLByteType || type == gl_const::GLUnsignedByteType)
return sizeof(GLbyte);
else if (type == gl_const::GLShortType || type == gl_const::GLUnsignedShortType)
return sizeof(GLshort);
else if (type == gl_const::GLIntType || type == gl_const::GLUnsignedIntType)
return sizeof(GLint);
else if (type == gl_const::GLFloatType)
return sizeof(GLfloat);
ASSERT(false, ());
return 0;
}
} // namespace
bool BindingDecl::operator==(BindingDecl const & other) const
{
return m_attributeName == other.m_attributeName &&
m_componentCount == other.m_componentCount &&
m_componentType == other.m_componentType &&
m_stride == other.m_stride &&
m_offset == other.m_offset;
}
bool BindingDecl::operator!=(BindingDecl const & other) const
{
return !operator==(other);
}
bool BindingDecl::operator<(BindingDecl const & other) const
{
if (m_attributeName != other.m_attributeName)
return m_attributeName < other.m_attributeName;
if (m_componentCount != other.m_componentCount)
return m_componentCount < other.m_componentCount;
if (m_componentType != other.m_componentType)
return m_componentType < other.m_componentType;
if (m_stride != other.m_stride)
return m_stride < other.m_stride;
return m_offset < other.m_offset;
}
BindingInfo::BindingInfo()
: m_info(0)
{}
BindingInfo::BindingInfo(uint8_t count, uint8_t id)
: m_info((static_cast<uint16_t>(count) << 8) | id)
{
CHECK_LESS_OR_EQUAL(count, kMaxBindingDecl, ());
}
uint8_t BindingInfo::GetCount() const
{
return static_cast<uint8_t>((m_info & 0xFF00) >> 8);
}
uint8_t BindingInfo::GetID() const
{
return static_cast<uint8_t>(m_info & 0xFF);
}
BindingDecl const & BindingInfo::GetBindingDecl(uint16_t index) const
{
ASSERT_LESS(index, GetCount(), ());
return m_bindings[index];
}
BindingDecl & BindingInfo::GetBindingDecl(uint16_t index)
{
ASSERT_LESS(index, GetCount(), ());
return m_bindings[index];
}
uint16_t BindingInfo::GetElementSize() const
{
if (GetCount() == 0)
return 0;
uint8_t stride = m_bindings[0].m_stride;
if (stride != 0)
return stride;
int calcStride = 0;
for (uint16_t i = 0; i < GetCount(); ++i)
calcStride += (m_bindings[i].m_componentCount * SizeOfType(m_bindings[i].m_componentType));
return static_cast<uint16_t>(calcStride);
}
bool BindingInfo::IsDynamic() const
{
return GetID() > 0;
}
bool BindingInfo::operator==(BindingInfo const & other) const
{
if (m_info != other.m_info)
return false;
for (uint16_t i = 0; i < GetCount(); ++i)
{
BindingDecl const & thisDecl = m_bindings[i];
BindingDecl const & otherDecl = other.m_bindings[i];
if (thisDecl != otherDecl)
return false;
}
return true;
}
bool BindingInfo::operator!=(BindingInfo const & other) const
{
return !operator==(other);
}
bool BindingInfo::operator<(BindingInfo const & other) const
{
if (m_info != other.m_info)
return m_info < other.m_info;
for (uint16_t i = 0; i < GetCount(); ++i)
{
BindingDecl const & thisDecl = m_bindings[i];
BindingDecl const & otherDecl = other.m_bindings[i];
if (thisDecl != otherDecl)
return thisDecl < otherDecl;
}
return false;
}
} // namespace dp
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