[Bug 38274] White water in Heroes VI

https://bugs.winehq.org/show_bug.cgi?id=38274

--- Comment #6 from Sergey Isakov  ---
I propose to make uncompress volume_textures before send
        GL_EXTCALL(glTexImage3D(GL_TEXTURE_3D, volume->texture_level,
                srgb ? format->glGammaInternal : format->glInternal,
                volume->resource.width, volume->resource.height,
volume->resource.depth,
                0, format->glFormat, format->glType, mem));
        checkGLcall("glTexImage3D");