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wined3d: Use the format info to calculate compressed surface size in IWineD3DDeviceImpl_CreateSurface().

This commit is contained in:
Henri Verbeet 2009-06-11 10:24:30 +02:00 committed by Alexandre Julliard
parent 1ad485ff83
commit e255f971e4
1 changed files with 10 additions and 17 deletions
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27
dlls/wined3d/device.c
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@ -898,7 +898,6 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSurface(IWineD3DDevice *iface,
IWineD3DSurfaceImpl *object; /*NOTE: impl ref allowed since this is a create function */
unsigned int Size = 1;
const struct GlPixelFormatDesc *glDesc = getFormatDescEntry(Format, &GLINFO_LOCATION);
UINT mul_4w, mul_4h;
HRESULT hr;
TRACE("(%p) Create surface\n",This);
@ -912,24 +911,18 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSurface(IWineD3DDevice *iface,
* by the device.
*******************************/
/** DXTn mipmaps use the same number of 'levels' down to eg. 8x1, but since
* it is based around 4x4 pixel blocks it requires padding, so allocate enough
* space!
*********************************/
mul_4w = (Width + 3) & ~3;
mul_4h = (Height + 3) & ~3;
if (WINED3DFMT_UNKNOWN == Format) {
Size = 0;
} else if (Format == WINED3DFMT_DXT1) {
/* DXT1 is half byte per pixel */
Size = (mul_4w * glDesc->byte_count * mul_4h) >> 1;
} else if (Format == WINED3DFMT_DXT2 || Format == WINED3DFMT_DXT3 ||
Format == WINED3DFMT_DXT4 || Format == WINED3DFMT_DXT5 ||
Format == WINED3DFMT_ATI2N) {
Size = (mul_4w * glDesc->byte_count * mul_4h);
} else {
/* The pitch is a multiple of 4 bytes */
}
else if (glDesc->Flags & WINED3DFMT_FLAG_COMPRESSED)
{
UINT row_block_count = (Width + glDesc->block_width - 1) / glDesc->block_width;
UINT row_count = (Height + glDesc->block_height - 1) / glDesc->block_height;
Size = row_count * row_block_count * glDesc->block_byte_count;
}
else
{
/* The pitch is a multiple of 4 bytes */
Size = ((Width * glDesc->byte_count) + This->surface_alignment - 1) & ~(This->surface_alignment - 1);
Size *= Height;
}