michael@0: #include "precompiled.h"
michael@0: //
michael@0: // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // Indexffer9.cpp: Defines the D3D9 IndexBuffer implementation.
michael@0: 
michael@0: #include "libGLESv2/renderer/IndexBuffer9.h"
michael@0: #include "libGLESv2/renderer/Renderer9.h"
michael@0: 
michael@0: namespace rx
michael@0: {
michael@0: 
michael@0: IndexBuffer9::IndexBuffer9(Renderer9 *const renderer) : mRenderer(renderer)
michael@0: {
michael@0:     mIndexBuffer = NULL;
michael@0:     mBufferSize = 0;
michael@0:     mIndexType = 0;
michael@0:     mDynamic = false;
michael@0: }
michael@0: 
michael@0: IndexBuffer9::~IndexBuffer9()
michael@0: {
michael@0:     if (mIndexBuffer)
michael@0:     {
michael@0:         mIndexBuffer->Release();
michael@0:         mIndexBuffer = NULL;
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool IndexBuffer9::initialize(unsigned int bufferSize, GLenum indexType, bool dynamic)
michael@0: {
michael@0:     if (mIndexBuffer)
michael@0:     {
michael@0:         mIndexBuffer->Release();
michael@0:         mIndexBuffer = NULL;
michael@0:     }
michael@0: 
michael@0:     updateSerial();
michael@0: 
michael@0:     if (bufferSize > 0)
michael@0:     {
michael@0:         D3DFORMAT format;
michael@0:         if (indexType == GL_UNSIGNED_SHORT || indexType == GL_UNSIGNED_BYTE)
michael@0:         {
michael@0:             format = D3DFMT_INDEX16;
michael@0:         }
michael@0:         else if (indexType == GL_UNSIGNED_INT)
michael@0:         {
michael@0:             if (mRenderer->get32BitIndexSupport())
michael@0:             {
michael@0:                 format = D3DFMT_INDEX32;
michael@0:             }
michael@0:             else
michael@0:             {
michael@0:                 ERR("Attempted to create a 32-bit index buffer but renderer does not support 32-bit indices.");
michael@0:                 return false;
michael@0:             }
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             ERR("Invalid index type %u.", indexType);
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         DWORD usageFlags = D3DUSAGE_WRITEONLY;
michael@0:         if (dynamic)
michael@0:         {
michael@0:             usageFlags |= D3DUSAGE_DYNAMIC;
michael@0:         }
michael@0: 
michael@0:         HRESULT result = mRenderer->createIndexBuffer(bufferSize, usageFlags, format, &mIndexBuffer);
michael@0:         if (FAILED(result))
michael@0:         {
michael@0:             ERR("Failed to create an index buffer of size %u, result: 0x%08x.", mBufferSize, result);
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     mBufferSize = bufferSize;
michael@0:     mIndexType = indexType;
michael@0:     mDynamic = dynamic;
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: IndexBuffer9 *IndexBuffer9::makeIndexBuffer9(IndexBuffer *indexBuffer)
michael@0: {
michael@0:     ASSERT(HAS_DYNAMIC_TYPE(IndexBuffer9*, indexBuffer));
michael@0:     return static_cast<IndexBuffer9*>(indexBuffer);
michael@0: }
michael@0: 
michael@0: bool IndexBuffer9::mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory)
michael@0: {
michael@0:     if (mIndexBuffer)
michael@0:     {
michael@0:         DWORD lockFlags = mDynamic ? D3DLOCK_NOOVERWRITE : 0;
michael@0: 
michael@0:         void *mapPtr = NULL;
michael@0:         HRESULT result = mIndexBuffer->Lock(offset, size, &mapPtr, lockFlags);
michael@0:         if (FAILED(result))
michael@0:         {
michael@0:             ERR("Index buffer lock failed with error 0x%08x", result);
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         *outMappedMemory = mapPtr;
michael@0:         return true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         ERR("Index buffer not initialized.");
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool IndexBuffer9::unmapBuffer()
michael@0: {
michael@0:     if (mIndexBuffer)
michael@0:     {
michael@0:         HRESULT result = mIndexBuffer->Unlock();
michael@0:         if (FAILED(result))
michael@0:         {
michael@0:             ERR("Index buffer unlock failed with error 0x%08x", result);
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         return true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         ERR("Index buffer not initialized.");
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLenum IndexBuffer9::getIndexType() const
michael@0: {
michael@0:     return mIndexType;
michael@0: }
michael@0: 
michael@0: unsigned int IndexBuffer9::getBufferSize() const
michael@0: {
michael@0:     return mBufferSize;
michael@0: }
michael@0: 
michael@0: bool IndexBuffer9::setSize(unsigned int bufferSize, GLenum indexType)
michael@0: {
michael@0:     if (bufferSize > mBufferSize || indexType != mIndexType)
michael@0:     {
michael@0:         return initialize(bufferSize, indexType, mDynamic);
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         return true;
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool IndexBuffer9::discard()
michael@0: {
michael@0:     if (mIndexBuffer)
michael@0:     {
michael@0:         void *dummy;
michael@0:         HRESULT result;
michael@0: 
michael@0:         result = mIndexBuffer->Lock(0, 1, &dummy, D3DLOCK_DISCARD);
michael@0:         if (FAILED(result))
michael@0:         {
michael@0:             ERR("Discard lock failed with error 0x%08x", result);
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         result = mIndexBuffer->Unlock();
michael@0:         if (FAILED(result))
michael@0:         {
michael@0:             ERR("Discard unlock failed with error 0x%08x", result);
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         return true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         ERR("Index buffer not initialized.");
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: D3DFORMAT IndexBuffer9::getIndexFormat() const
michael@0: {
michael@0:     switch (mIndexType)
michael@0:     {
michael@0:       case GL_UNSIGNED_BYTE:    return D3DFMT_INDEX16;
michael@0:       case GL_UNSIGNED_SHORT:   return D3DFMT_INDEX16;
michael@0:       case GL_UNSIGNED_INT:     return D3DFMT_INDEX32;
michael@0:       default: UNREACHABLE();   return D3DFMT_UNKNOWN;
michael@0:     }
michael@0: }
michael@0: 
michael@0: IDirect3DIndexBuffer9 * IndexBuffer9::getBuffer() const
michael@0: {
michael@0:     return mIndexBuffer;
michael@0: }
michael@0: 
michael@0: }