Re: [4/8] d3dx9: Implement D3DXCreateCubeTextureFromFileInMemoryEx.

[Matteo Bruni]

2012/5/9 Józef Kucia :
> - mip_levels = min(src_info->MipLevels, IDirect3DCubeTexture9_GetLevelCount(cube_texture));
> - for (face = D3DCUBEMAP_FACE_POSITIVE_X; face <= D3DCUBEMAP_FACE_NEGATIVE_Z; face++)
> - {
> - size = src_info->Width;
> - for (mip_level = 0; mip_level < mip_levels; mip_level++)
> - {
> - hr = calculate_dds_surface_size(src_info, size, size, &src_pitch, &mip_level_size);
> - if (FAILED(hr)) return hr;
> -
> - SetRect(&src_rect, 0, 0, size, size);
> -
> - IDirect3DCubeTexture9_GetCubeMapSurface(cube_texture, face, mip_level, &surface);
> - hr = D3DXLoadSurfaceFromMemory(surface, palette, NULL, pixels, src_info->Format, src_pitch,
> - NULL, &src_rect, filter, color_key);
> - IDirect3DSurface9_Release(surface);
> - if (FAILED(hr)) return hr;
> -
> - pixels += mip_level_size;
> - size = max(1, size / 2);
> - }
> -
> - /* if texture has fewer mip levels than DDS file, skip excessive mip levels */
> - while (mip_level < src_info->MipLevels)
> - {
> - calculate_dds_surface_size(src_info, size, size, &src_pitch, &mip_level_size);
> - pixels += mip_level_size;
> - size = max(1, size / 2);
> - mip_level++;
> - }
> - }

Really a nitpick, you could merge the "while" into the "for" loop above.
> - if ((caps.Caps2 & D3DCAPS2_DYNAMICTEXTURES) && (pool != D3DPOOL_DEFAULT) && (usage != D3DUSAGE_DYNAMIC))
> - {
> - hr = D3DXCreateCubeTexture(device, size, mip_levels, usage, format, pool, &tex);
> - buftex = NULL;
> - }
> - else
> - {
> - hr = D3DXCreateCubeTexture(device, size, mip_levels, usage, format, D3DPOOL_SYSTEMMEM, &buftex);
> - tex = buftex;
> - }

The "if" condition doesn't look correct to me, since e.g. you don't
need a temporary texture if pool == D3DPOOL_DEFAULT and usage ==
D3DUSAGE_DYNAMIC.