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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "common.h"
#include <cstring>
size_t getNumberOfComponents(char *dataType)
{
if (!strcmp(dataType, "SCALAR"))
{
return 1;
}
if (!strcmp(dataType, "VEC2"))
{
return 2;
}
if (!strcmp(dataType, "VEC3"))
{
return 3;
}
if (!strcmp(dataType, "VEC4"))
{
return 4;
}
if (!strcmp(dataType, "MAT2"))
{
return 4;
}
if (!strcmp(dataType, "MAT3"))
{
return 9;
}
if (!strcmp(dataType, "MAT4"))
{
return 16;
}
return 0;
}
size_t getComponentByteLength(size_t componentType)
{
switch (componentType)
{
case ComponentType::Byte:
case ComponentType::UnsignedByte:
return 1;
case ComponentType::Short:
case ComponentType::UnsignedShort:
return 2;
case ComponentType::UnsignedInt:
case ComponentType::Float:
return 4;
default:
return 0;
}
}
size_t getAttributeStride(size_t componentType, char *dataType)
{
return getComponentByteLength(componentType) * getNumberOfComponents(dataType);
}
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