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updated IndexBuffer to use Initialize() methods instead of doing it all in the constructor

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Gered 2013-04-01 17:14:32 -04:00
parent 2ec3ed3673
commit ee9928ad79
2 changed files with 93 additions and 30 deletions
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72
src/framework/graphics/indexbuffer.cpp
View file

@ -4,25 +4,10 @@
#include <string.h>
IndexBuffer::IndexBuffer(uint32_t numIndices, BOOL isStatic)
: BufferObject(BUFFEROBJECT_TYPE_INDEX, isStatic ? BUFFEROBJECT_USAGE_STATIC : BUFFEROBJECT_USAGE_DYNAMIC)
IndexBuffer::IndexBuffer()
{
STACK_TRACE;
m_currentIndex = 0;
Resize(numIndices);
}
IndexBuffer::IndexBuffer(const IndexBuffer *source)
: BufferObject(BUFFEROBJECT_TYPE_INDEX, source->GetUsage())
{
STACK_TRACE;
ASSERT(source != NULL);
ASSERT(source->GetNumElements() > 0);
m_currentIndex = 0;
Resize(source->GetNumElements());
memcpy(&m_buffer[0], source->GetBuffer(), GetNumElements() * GetElementWidthInBytes());
}
IndexBuffer::~IndexBuffer()
@ -30,6 +15,57 @@ IndexBuffer::~IndexBuffer()
STACK_TRACE;
}
BOOL IndexBuffer::Initialize(uint32_t numIndices, BUFFEROBJECT_USAGE usage)
{
STACK_TRACE;
return Initialize(NULL, numIndices, usage);
}
BOOL IndexBuffer::Initialize(GraphicsDevice *graphicsDevice, uint32_t numIndices, BUFFEROBJECT_USAGE usage)
{
STACK_TRACE;
ASSERT(m_buffer.size() == 0);
if (m_buffer.size() > 0)
return FALSE;
ASSERT(numIndices > 0);
if (numIndices == 0)
return FALSE;
if (!BufferObject::Initialize(graphicsDevice, BUFFEROBJECT_TYPE_INDEX, usage))
return FALSE;
Resize(numIndices);
return TRUE;
}
BOOL IndexBuffer::Initialize(const IndexBuffer *source)
{
STACK_TRACE;
return Initialize(NULL, source);
}
BOOL IndexBuffer::Initialize(GraphicsDevice *graphicsDevice, const IndexBuffer *source)
{
STACK_TRACE;
ASSERT(m_buffer.size() == 0);
if (m_buffer.size() > 0)
return FALSE;
ASSERT(source != NULL);
if (source == NULL)
return FALSE;
ASSERT(source->GetNumElements() > 0);
if (source->GetNumElements() == 0)
return FALSE;
Resize(source->GetNumElements());
memcpy(&m_buffer[0], source->GetBuffer(), GetNumElements() * GetElementWidthInBytes());
}
void IndexBuffer::Set(const uint16_t *indices, uint32_t numIndices)
{
STACK_TRACE;
@ -39,6 +75,10 @@ void IndexBuffer::Set(const uint16_t *indices, uint32_t numIndices)
void IndexBuffer::Resize(uint32_t numIndices)
{
STACK_TRACE;
ASSERT(numIndices > 0);
if (numIndices == 0)
return;
m_buffer.resize(numIndices, 0);
if (!IsClientSideBuffer())

51
src/framework/graphics/indexbuffer.h
View file

@ -7,6 +7,8 @@
#include <stdlib.h> // for abs()
#include <stl/vector.h>
class GraphicsDevice;
/**
* Wraps management of an array of vertex indexes to be used for
* optimized rendering of vertices.
@ -14,21 +16,42 @@
class IndexBuffer : public BufferObject
{
public:
/**
* Creates an index buffer.
* @param numIndices the initial number of indices the buffer should hold
* @param isStatic whether the index data is static or dynamic (used as
* a hint for index data stored in video memory)
*/
IndexBuffer(uint32_t numIndices, BOOL isStatic);
/**
* Creates an index buffer.
* @param source the source buffer to copy during creation of this buffer
*/
IndexBuffer(const IndexBuffer *source);
IndexBuffer();
virtual ~IndexBuffer();
/**
* Initializes the index buffer.
* @param numIndices the initial number of indices the buffer should hold
* @param usage the expected usage pattern of this index buffer
* @return TRUE if successful, FALSE if not
*/
BOOL Initialize(uint32_t numIndices, BUFFEROBJECT_USAGE usage);
/**
* Initializes the index buffer.
* @param graphicsDevice the graphics device to use to create this buffer
* on the GPU
* @param numIndices the initial number of indices the buffer should hold
* @param usage the expected usage pattern of this index buffer
* @return TRUE if successful, FALSE if not
*/
BOOL Initialize(GraphicsDevice *graphicsDevice, uint32_t numIndices, BUFFEROBJECT_USAGE usage);
/**
* Initializes the index buffer.
* @param source the source buffer to copy during creation of this buffer
* @return TRUE if successful, FALSE if not
*/
BOOL Initialize(const IndexBuffer *source);
/**
* Initializes the index buffer.
* @param graphicsDevice the graphics device to use to create this buffer
* on the GPU
* @param source the source buffer to copy during creation of this buffer
* @return TRUE if successful, FALSE if not
*/
BOOL Initialize(GraphicsDevice *graphicsDevice, const IndexBuffer *source);
/**
* Copies the source indices over top of this buffer's existing indices.