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ddraw: Properly use the index buffer as a dynamic buffer.

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Stefan Dösinger 2012-11-27 00:00:32 +01:00 committed by Alexandre Julliard
parent 108fcb691c
commit a61f68fc5a
2 changed files with 10 additions and 3 deletions
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1
dlls/ddraw/ddraw_private.h
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@ -277,6 +277,7 @@ struct d3d_device
struct ddraw *ddraw;
struct wined3d_buffer *indexbuffer;
UINT indexbuffer_size;
UINT indexbuffer_pos;
struct ddraw_surface *target;
/* Viewport management */

12
dlls/ddraw/device.c
View File

@ -4041,6 +4041,7 @@ static HRESULT d3d_device7_DrawIndexedPrimitiveVB(IDirect3DDevice7 *iface,
DWORD stride = get_flexible_vertex_size(vb->fvf);
WORD *LockedIndices;
HRESULT hr;
UINT ib_pos = This->indexbuffer_pos;
TRACE("iface %p, primitive_type %#x, vb %p, start_vertex %u, vertex_count %u, indices %p, index_count %u, flags %#x.\n",
iface, PrimitiveType, D3DVertexBuf, StartVertex, NumVertices, Indices, IndexCount, Flags);
@ -4075,14 +4076,18 @@ static HRESULT d3d_device7_DrawIndexedPrimitiveVB(IDirect3DDevice7 *iface,
if (This->indexbuffer) wined3d_buffer_decref(This->indexbuffer);
This->indexbuffer = buffer;
This->indexbuffer_size = size;
ib_pos = 0;
}
if (This->indexbuffer_size - IndexCount * sizeof(WORD) < ib_pos)
ib_pos = 0;
/* Copy the index stream into the index buffer. A new IWineD3DDevice
* method could be created which takes an user pointer containing the
* indices or a SetData-Method for the index buffer, which overrides the
* index buffer data with our pointer. */
hr = wined3d_buffer_map(This->indexbuffer, 0, IndexCount * sizeof(WORD),
(BYTE **)&LockedIndices, 0);
hr = wined3d_buffer_map(This->indexbuffer, ib_pos, IndexCount * sizeof(WORD),
(BYTE **)&LockedIndices, ib_pos ? WINED3D_MAP_NOOVERWRITE : WINED3D_MAP_DISCARD);
if (FAILED(hr))
{
ERR("Failed to map buffer, hr %#x.\n", hr);
@ -4091,6 +4096,7 @@ static HRESULT d3d_device7_DrawIndexedPrimitiveVB(IDirect3DDevice7 *iface,
}
memcpy(LockedIndices, Indices, IndexCount * sizeof(WORD));
wined3d_buffer_unmap(This->indexbuffer);
This->indexbuffer_pos = ib_pos + IndexCount * sizeof(WORD);
/* Set the index stream */
wined3d_device_set_base_vertex_index(This->wined3d_device, StartVertex);
@ -4107,7 +4113,7 @@ static HRESULT d3d_device7_DrawIndexedPrimitiveVB(IDirect3DDevice7 *iface,
wined3d_device_set_primitive_type(This->wined3d_device, PrimitiveType);
hr = wined3d_device_draw_indexed_primitive(This->wined3d_device, 0, IndexCount);
hr = wined3d_device_draw_indexed_primitive(This->wined3d_device, ib_pos / sizeof(WORD), IndexCount);
wined3d_mutex_unlock();