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wined3d: Use the format info to calculate compressed surface pitch in IWineD3DBaseSurfaceImpl_GetPitch().

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This commit is contained in:
Henri Verbeet 2009-06-11 10:24:30 +02:00 committed by Alexandre Julliard
parent da12ac05a4
commit 5fbf895da6
1 changed files with 10 additions and 10 deletions
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20
dlls/wined3d/surface_base.c
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@ -332,19 +332,19 @@ HRESULT WINAPI IWineD3DBaseSurfaceImpl_GetPalette(IWineD3DSurface *iface, IWineD
DWORD WINAPI IWineD3DBaseSurfaceImpl_GetPitch(IWineD3DSurface *iface) {
IWineD3DSurfaceImpl *This = (IWineD3DSurfaceImpl *) iface;
WINED3DFORMAT format = This->resource.format_desc->format;
const struct GlPixelFormatDesc *format_desc = This->resource.format_desc;
DWORD ret;
TRACE("(%p)\n", This);
/* DXTn formats don't have exact pitches as they are to the new row of blocks,
where each block is 4x4 pixels, 8 bytes (dxt1) and 16 bytes (dxt2/3/4/5)
ie pitch = (width/4) * bytes per block */
if (format == WINED3DFMT_DXT1) /* DXT1 is 8 bytes per block */
ret = ((This->currentDesc.Width + 3) >> 2) << 3;
else if (format == WINED3DFMT_DXT2 || format == WINED3DFMT_DXT3 ||
format == WINED3DFMT_DXT4 || format == WINED3DFMT_DXT5) /* DXT2/3/4/5 is 16 bytes per block */
ret = ((This->currentDesc.Width + 3) >> 2) << 4;
else {
if (format_desc->Flags & WINED3DFMT_FLAG_COMPRESSED)
{
/* Since compressed formats are block based, pitch means the amount of
* bytes to the next row of block rather than the next row of pixels. */
UINT row_block_count = (This->currentDesc.Width + format_desc->block_width - 1) / format_desc->block_width;
ret = row_block_count * format_desc->block_byte_count;
}
else
{
unsigned char alignment = This->resource.wineD3DDevice->surface_alignment;
ret = This->resource.format_desc->byte_count * This->currentDesc.Width; /* Bytes / row */
ret = (ret + alignment - 1) & ~(alignment - 1);