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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the definitions of VertexBufferD3D9 and IndexBufferD3D9.
#include "core/cross/precompile.h"
#include "core/win/d3d9/buffer_d3d9.h"
#include "core/win/d3d9/utils_d3d9.h"
namespace o3d {
namespace {
DWORD BufferAccessModeToD3DLock(Buffer::AccessMode access_mode) {
switch (access_mode) {
case Buffer::READ_ONLY:
return D3DLOCK_READONLY;
break;
case Buffer::WRITE_ONLY:
return 0;
case Buffer::READ_WRITE:
return 0;
}
DCHECK(false);
return 0;
}
} // anonymous namespace
// Initializes the O3D VertexBuffer object but does not create a DX9 buffer
// yet.
VertexBufferD3D9::VertexBufferD3D9(ServiceLocator* service_locator,
LPDIRECT3DDEVICE9 d3d_device)
: VertexBuffer(service_locator),
d3d_device_(d3d_device) {
DCHECK(d3d_device);
}
VertexBufferD3D9::~VertexBufferD3D9() {
}
// Creates a DX9 vertex buffer of the requested size.
bool VertexBufferD3D9::ConcreteAllocate(unsigned int size_in_bytes) {
d3d_buffer_ = NULL;
return HR(d3d_device_->CreateVertexBuffer(
size_in_bytes,
0,
0,
D3DPOOL_MANAGED,
&d3d_buffer_,
NULL));
}
void VertexBufferD3D9::ConcreteFree() {
d3d_buffer_ = NULL;
}
// Calls Lock on the DX9 buffer to get the address in memory of where the
// buffer data is currently stored.
bool VertexBufferD3D9::ConcreteLock(AccessMode access_mode,
void **buffer_data) {
*buffer_data = NULL;
if (GetSizeInBytes() == 0)
return true;
if (!d3d_buffer_)
return false;
if (!HR(d3d_buffer_->Lock(0, GetSizeInBytes(), buffer_data,
BufferAccessModeToD3DLock(access_mode)))) {
return false;
}
// Yes, this really happens sometimes.
if (NULL == *buffer_data) {
HR(d3d_buffer_->Unlock());
return false;
}
return true;
}
// Calls Unlock on the DX9 buffer to notify that the contents of the buffer
// are now ready for use.
bool VertexBufferD3D9::ConcreteUnlock() {
if (!d3d_buffer_) return false;
return HR(d3d_buffer_->Unlock());
}
// Initializes the O3D IndexBuffer object but does not create a DX9 buffer
// yet.
IndexBufferD3D9::IndexBufferD3D9(ServiceLocator* service_locator,
LPDIRECT3DDEVICE9 d3d_device,
bool small_buffer)
: IndexBuffer(service_locator),
d3d_device_(d3d_device),
shadow_buffer_(NULL),
dirty_(false),
small_(small_buffer) {
DCHECK(d3d_device);
}
IndexBufferD3D9::~IndexBufferD3D9() {
}
// Creates a DX9 index buffer of the requested size.
bool IndexBufferD3D9::ConcreteAllocate(unsigned int size_in_bytes) {
d3d_buffer_ = NULL;
if (small_) {
shadow_buffer_.reset(new uint8[size_in_bytes]);
}
return HR(d3d_device_->CreateIndexBuffer(
size_in_bytes / (small_ ? 2 : 1),
0,
small_ ? D3DFMT_INDEX16 : D3DFMT_INDEX32,
D3DPOOL_MANAGED,
&d3d_buffer_,
NULL));
}
void IndexBufferD3D9::ConcreteFree() {
d3d_buffer_ = NULL;
shadow_buffer_.reset();
}
// Calls Lock on the DX9 buffer to get the address in memory of where the
// buffer data is currently stored.
bool IndexBufferD3D9::ConcreteLock(AccessMode access_mode, void **buffer_data) {
*buffer_data = NULL;
if (GetSizeInBytes() == 0)
return true;
if (!d3d_buffer_)
return false;
if (small_) {
*buffer_data = shadow_buffer_.get();
if (access_mode == Buffer::READ_WRITE ||
access_mode == Buffer::WRITE_ONLY) {
dirty_ = true;
}
return true;
}
if (!HR(d3d_buffer_->Lock(0, GetSizeInBytes(), buffer_data,
BufferAccessModeToD3DLock(access_mode)))) {
return false;
}
// Yes, this really happens sometimes.
// WTF is this? If this fails the app fails!
if (NULL == *buffer_data) {
HR(d3d_buffer_->Unlock());
return false;
}
return true;
}
// Calls Unlock on the DX9 buffer to notify that the contents of the buffer
// are now ready for use.
bool IndexBufferD3D9::ConcreteUnlock() {
if (GetSizeInBytes() == 0) return true;
if (!d3d_buffer_) return false;
if (small_) {
// TODO: Move this to just before rendering.
if (dirty_) {
void* data;
bool locked = HR(d3d_buffer_->Lock(0, GetSizeInBytes() / 2, &data,
Buffer::WRITE_ONLY));
if (locked) {
uint16* destination = reinterpret_cast<uint16*>(data);
uint32* source = reinterpret_cast<uint32*>(shadow_buffer_.get());
uint32* end = source + num_elements();
for (; source < end; ++source, ++destination) {
*destination = *source;
}
d3d_buffer_->Unlock();
dirty_ = false;
return true;
}
return false;
}
return true;
} else {
return HR(d3d_buffer_->Unlock());
}
}
} // namespace o3d
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