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CIndexBuffer: Make use of size_t where applicable

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Provides a nicer interface for operating with standard types, etc.
This commit is contained in:
Lioncash 2020-06-14 18:29:37 -04:00
parent d4564434c3
commit 332be356de
2 changed files with 56 additions and 54 deletions
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92
src/Core/OpenGL/CIndexBuffer.cpp
View File

@ -2,8 +2,8 @@
CIndexBuffer::CIndexBuffer() = default;
CIndexBuffer::CIndexBuffer(GLenum Type)
: mPrimitiveType(Type)
CIndexBuffer::CIndexBuffer(GLenum type)
: mPrimitiveType(type)
{
}
@ -13,21 +13,21 @@ CIndexBuffer::~CIndexBuffer()
glDeleteBuffers(1, &mIndexBuffer);
}
void CIndexBuffer::AddIndex(uint16 Index)
void CIndexBuffer::AddIndex(uint16 index)
{
mIndices.push_back(Index);
mIndices.push_back(index);
}
void CIndexBuffer::AddIndices(uint16 *pIndices, uint Count)
void CIndexBuffer::AddIndices(uint16 *indices, size_t count)
{
Reserve(Count);
for (uint iIdx = 0; iIdx < Count; iIdx++)
mIndices.push_back(*pIndices++);
Reserve(count);
for (size_t i = 0; i < count; i++)
mIndices.push_back(*indices++);
}
void CIndexBuffer::Reserve(uint Size)
void CIndexBuffer::Reserve(size_t size)
{
mIndices.reserve(mIndices.size() + Size);
mIndices.reserve(mIndices.size() + size);
}
void CIndexBuffer::Clear()
@ -53,7 +53,9 @@ void CIndexBuffer::Buffer()
void CIndexBuffer::Bind()
{
if (!mBuffered) Buffer();
if (!mBuffered)
Buffer();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer);
}
@ -64,14 +66,14 @@ void CIndexBuffer::Unbind()
void CIndexBuffer::DrawElements()
{
Bind();
glDrawElements(mPrimitiveType, mIndices.size(), GL_UNSIGNED_SHORT, (void*) 0);
glDrawElements(mPrimitiveType, mIndices.size(), GL_UNSIGNED_SHORT, nullptr);
Unbind();
}
void CIndexBuffer::DrawElements(uint Offset, uint Size)
void CIndexBuffer::DrawElements(uint offset, uint size)
{
Bind();
glDrawElements(mPrimitiveType, Size, GL_UNSIGNED_SHORT, (char*)0 + (Offset * 2));
glDrawElements(mPrimitiveType, size, GL_UNSIGNED_SHORT, (char*)0 + (offset * 2));
Unbind();
}
@ -90,62 +92,62 @@ GLenum CIndexBuffer::GetPrimitiveType() const
return mPrimitiveType;
}
void CIndexBuffer::SetPrimitiveType(GLenum Type)
void CIndexBuffer::SetPrimitiveType(GLenum type)
{
mPrimitiveType = Type;
mPrimitiveType = type;
}
void CIndexBuffer::TrianglesToStrips(uint16 *pIndices, uint Count)
void CIndexBuffer::TrianglesToStrips(uint16 *indices, size_t count)
{
Reserve(Count + (Count / 3));
Reserve(count + (count / 3));
for (uint iIdx = 0; iIdx < Count; iIdx += 3)
for (size_t i = 0; i < count; i += 3)
{
mIndices.push_back(*pIndices++);
mIndices.push_back(*pIndices++);
mIndices.push_back(*pIndices++);
mIndices.push_back(*indices++);
mIndices.push_back(*indices++);
mIndices.push_back(*indices++);
mIndices.push_back(0xFFFF);
}
}
void CIndexBuffer::FansToStrips(uint16 *pIndices, uint Count)
void CIndexBuffer::FansToStrips(uint16 *indices, size_t count)
{
Reserve(Count);
uint16 FirstIndex = *pIndices;
Reserve(count);
const uint16 firstIndex = *indices;
for (uint iIdx = 2; iIdx < Count; iIdx += 3)
for (size_t i = 2; i < count; i += 3)
{
mIndices.push_back(pIndices[iIdx - 1]);
mIndices.push_back(pIndices[iIdx]);
mIndices.push_back(FirstIndex);
if (iIdx + 1 < Count)
mIndices.push_back(pIndices[iIdx + 1]);
if (iIdx + 2 < Count)
mIndices.push_back(pIndices[iIdx + 2]);
mIndices.push_back(indices[i - 1]);
mIndices.push_back(indices[i]);
mIndices.push_back(firstIndex);
if (i + 1 < count)
mIndices.push_back(indices[i + 1]);
if (i + 2 < count)
mIndices.push_back(indices[i + 2]);
mIndices.push_back(0xFFFF);
}
}
void CIndexBuffer::QuadsToStrips(uint16 *pIndices, uint Count)
void CIndexBuffer::QuadsToStrips(uint16 *indices, size_t count)
{
Reserve((uint) (Count * 1.25));
Reserve(static_cast<size_t>(count * 1.25));
uint iIdx = 3;
for (; iIdx < Count; iIdx += 4)
size_t i = 3;
for (; i < count; i += 4)
{
mIndices.push_back(pIndices[iIdx - 2]);
mIndices.push_back(pIndices[iIdx - 1]);
mIndices.push_back(pIndices[iIdx - 3]);
mIndices.push_back(pIndices[iIdx]);
mIndices.push_back(indices[i - 2]);
mIndices.push_back(indices[i - 1]);
mIndices.push_back(indices[i - 3]);
mIndices.push_back(indices[i]);
mIndices.push_back(0xFFFF);
}
// if there's three indices present that indicates a single triangle
if (iIdx == Count)
if (i == count)
{
mIndices.push_back(pIndices[iIdx - 3]);
mIndices.push_back(pIndices[iIdx - 2]);
mIndices.push_back(pIndices[iIdx - 1]);
mIndices.push_back(indices[i - 3]);
mIndices.push_back(indices[i - 2]);
mIndices.push_back(indices[i - 1]);
mIndices.push_back(0xFFFF);
}

18
src/Core/OpenGL/CIndexBuffer.h
View File

@ -14,26 +14,26 @@ class CIndexBuffer
public:
CIndexBuffer();
explicit CIndexBuffer(GLenum Type);
explicit CIndexBuffer(GLenum type);
~CIndexBuffer();
void AddIndex(uint16 Index);
void AddIndices(uint16 *pIndices, uint Count);
void Reserve(uint Size);
void AddIndex(uint16 index);
void AddIndices(uint16 *indices, size_t count);
void Reserve(size_t size);
void Clear();
void Buffer();
void Bind();
void Unbind();
void DrawElements();
void DrawElements(uint Offset, uint Size);
void DrawElements(uint offset, uint size);
bool IsBuffered() const;
uint GetSize() const;
GLenum GetPrimitiveType() const;
void SetPrimitiveType(GLenum Type);
void SetPrimitiveType(GLenum type);
void TrianglesToStrips(uint16 *pIndices, uint Count);
void FansToStrips(uint16 *pIndices, uint Count);
void QuadsToStrips(uint16 *pIndices, uint Count);
void TrianglesToStrips(uint16 *indices, size_t count);
void FansToStrips(uint16 *indices, size_t count);
void QuadsToStrips(uint16 *indices, size_t count);
};
#endif // CINDEXBUFFER_H