static void wined3d_shader_resource_view_cs_init(void *object)
{
    struct wined3d_shader_resource_view *view = object;
    struct wined3d_resource *resource = view->resource;
    const struct wined3d_format *view_format;
    const struct wined3d_gl_info *gl_info;
    const struct wined3d_view_desc *desc;
    GLenum view_target;

    view_format = view->format;
    gl_info = &resource->device->adapter->gl_info;
    desc = &view->desc;

    if (resource->type == WINED3D_RTYPE_BUFFER)
    {
        struct wined3d_buffer *buffer = buffer_from_resource(resource);
        struct wined3d_context *context;

        context = context_acquire(resource->device, NULL, 0);
        create_buffer_view(&view->gl_view, context, desc, buffer, view_format);
        context_release(context);
    }
    else
    {
        struct wined3d_texture *texture = texture_from_resource(resource);

        view_target = get_texture_view_target(gl_info, desc, texture);

        if (resource->format->id == view_format->id && texture->target == view_target
                && !desc->u.texture.level_idx && desc->u.texture.level_count == texture->level_count
                && !desc->u.texture.layer_idx && desc->u.texture.layer_count == texture->layer_count
                && !is_stencil_view_format(view_format))
        {
            TRACE("Creating identity shader resource view.\n");
        }
        else if (texture->swapchain && texture->swapchain->desc.backbuffer_count > 1)
        {
            FIXME("Swapchain shader resource views not supported.\n");
        }
        else if (resource->format->typeless_id == view_format->typeless_id
                && resource->format->gl_view_class == view_format->gl_view_class)
        {
            create_texture_view(&view->gl_view, view_target, desc, texture, view_format);
        }
        else if (wined3d_format_is_depth_view(resource->format->id, view_format->id))
        {
            create_texture_view(&view->gl_view, view_target, desc, texture, resource->format);
        }
        else
        {
            FIXME("Shader resource view not supported, resource format %s, view format %s.\n",
                    debug_d3dformat(resource->format->id), debug_d3dformat(view_format->id));
        }
    }

    wined3d_resource_release(resource);
}

/* Context activation is done by the caller. */
void wined3d_volume_upload_data(struct wined3d_volume *volume, const struct wined3d_context *context,
        const struct wined3d_bo_address *data)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *format = volume->resource.format;

    TRACE("volume %p, context %p, level %u, format %s (%#x).\n",
            volume, context, volume->texture_level, debug_d3dformat(format->id),
            format->id);


    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, data->buffer_object));
        checkGLcall("glBindBufferARB");
    }

    GL_EXTCALL(glTexSubImage3DEXT(GL_TEXTURE_3D, volume->texture_level, 0, 0, 0,
            volume->resource.width, volume->resource.height, volume->resource.depth,
            format->glFormat, format->glType, data->addr));
    checkGLcall("glTexSubImage3D");

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0));
        checkGLcall("glBindBufferARB");
    }
}

/* Context activation is done by the caller. */
static void wined3d_volume_download_data(struct wined3d_volume *volume,
        const struct wined3d_context *context, const struct wined3d_bo_address *data)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *format = volume->resource.format;

    if (format->convert)
    {
        FIXME("Attempting to download a converted volume, format %s.\n",
                debug_d3dformat(format->id));
        return;
    }

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, data->buffer_object));
        checkGLcall("glBindBufferARB");
    }

    gl_info->gl_ops.gl.p_glGetTexImage(GL_TEXTURE_3D, volume->texture_level,
            format->glFormat, format->glType, data->addr);
    checkGLcall("glGetTexImage");

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, 0));
        checkGLcall("glBindBufferARB");
    }

}

HRESULT CDECL wined3d_texture_create_cube(struct wined3d_device *device, UINT edge_length,
        UINT level_count, DWORD usage, enum wined3d_format_id format_id, enum wined3d_pool pool, void *parent,
        const struct wined3d_parent_ops *parent_ops, struct wined3d_texture **texture)
{
    struct wined3d_texture *object;
    HRESULT hr;

    TRACE("device %p, edge_length %u, level_count %u, usage %#x\n",
          device, edge_length, level_count, usage);
    TRACE("format %s, pool %#x, parent %p, parent_ops %p, texture %p.\n",
          debug_d3dformat(format_id), pool, parent, parent_ops, texture);

    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
    if (!object)
    {
        ERR("Out of memory\n");
        *texture = NULL;
        return WINED3DERR_OUTOFVIDEOMEMORY;
    }

    hr = cubetexture_init(object, edge_length, level_count,
                          device, usage, format_id, pool, parent, parent_ops);
    if (FAILED(hr))
    {
        WARN("Failed to initialize cubetexture, returning %#x\n", hr);
        HeapFree(GetProcessHeap(), 0, object);
        *texture = NULL;
        return hr;
    }

    TRACE("Created texture %p.\n", object);
    *texture = object;

    return WINED3D_OK;
}

HRESULT CDECL wined3d_volume_create(struct wined3d_device *device, UINT width, UINT height,
        UINT depth, UINT level, DWORD usage, enum wined3d_format_id format_id, enum wined3d_pool pool,
        void *parent, const struct wined3d_parent_ops *parent_ops, struct wined3d_volume **volume)
{
    struct wined3d_volume *object;
    HRESULT hr;

    TRACE("device %p, width %u, height %u, depth %u, usage %#x, format %s, pool %s\n",
            device, width, height, depth, usage, debug_d3dformat(format_id), debug_d3dpool(pool));
    TRACE("parent %p, parent_ops %p, volume %p.\n", parent, parent_ops, volume);

    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
    if (!object)
    {
        *volume = NULL;
        return WINED3DERR_OUTOFVIDEOMEMORY;
    }

    hr = volume_init(object, device, width, height, depth, level,
            usage, format_id, pool, parent, parent_ops);
    if (FAILED(hr))
    {
        WARN("Failed to initialize volume, returning %#x.\n", hr);
        HeapFree(GetProcessHeap(), 0, object);
        return hr;
    }

    TRACE("Created volume %p.\n", object);
    *volume = object;

    return WINED3D_OK;
}

/* Context activation is done by the caller. */
void wined3d_volume_upload_data(struct wined3d_volume *volume, const struct wined3d_context *context,
        const struct wined3d_const_bo_address *data)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    struct wined3d_texture *texture = volume->container;
    const struct wined3d_format *format = texture->resource.format;
    unsigned int width, height, depth;
    const void *mem = data->addr;
    void *converted_mem = NULL;

    TRACE("volume %p, context %p, level %u, format %s (%#x).\n",
            volume, context, volume->texture_level, debug_d3dformat(format->id),
            format->id);

    width = wined3d_texture_get_level_width(texture, volume->texture_level);
    height = wined3d_texture_get_level_height(texture, volume->texture_level);
    depth = wined3d_texture_get_level_depth(texture, volume->texture_level);

    if (format->convert)
    {
        UINT dst_row_pitch, dst_slice_pitch;
        UINT src_row_pitch, src_slice_pitch;

        if (data->buffer_object)
            ERR("Loading a converted volume from a PBO.\n");
        if (texture->resource.format_flags & WINED3DFMT_FLAG_BLOCKS)
            ERR("Converting a block-based format.\n");

        dst_row_pitch = width * format->conv_byte_count;
        dst_slice_pitch = dst_row_pitch * height;

        wined3d_texture_get_pitch(texture, volume->texture_level, &src_row_pitch, &src_slice_pitch);

        converted_mem = HeapAlloc(GetProcessHeap(), 0, dst_slice_pitch * depth);
        format->convert(data->addr, converted_mem, src_row_pitch, src_slice_pitch,
                dst_row_pitch, dst_slice_pitch, width, height, depth);
        mem = converted_mem;
    }

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBuffer(GL_PIXEL_UNPACK_BUFFER, data->buffer_object));
        checkGLcall("glBindBuffer");
    }

    GL_EXTCALL(glTexSubImage3D(GL_TEXTURE_3D, volume->texture_level, 0, 0, 0,
            width, height, depth,
            format->glFormat, format->glType, mem));
    checkGLcall("glTexSubImage3D");

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0));
        checkGLcall("glBindBuffer");
    }

    HeapFree(GetProcessHeap(), 0, converted_mem);
}

static void dump_wined3dvertexelement(const WINED3DVERTEXELEMENT *element) {
    TRACE("     format: %s (%#x)\n", debug_d3dformat(element->format), element->format);
    TRACE(" input_slot: %u\n", element->input_slot);
    TRACE("     offset: %u\n", element->offset);
    TRACE("output_slot: %u\n", element->output_slot);
    TRACE("     method: %s (%#x)\n", debug_d3ddeclmethod(element->method), element->method);
    TRACE("      usage: %s (%#x)\n", debug_d3ddeclusage(element->usage), element->usage);
    TRACE("  usage_idx: %u\n", element->usage_idx);
}

/* Context activation is done by the caller. */
void wined3d_volume_upload_data(struct wined3d_volume *volume, const struct wined3d_context *context,
        const struct wined3d_bo_address *data)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *format = volume->resource.format;
    UINT width = volume->resource.width;
    UINT height = volume->resource.height;
    UINT depth = volume->resource.depth;
    BYTE *mem = data->addr;

    TRACE("volume %p, context %p, level %u, format %s (%#x).\n",
            volume, context, volume->texture_level, debug_d3dformat(format->id),
            format->id);

    if (format->convert)
    {
        UINT dst_row_pitch, dst_slice_pitch;
        UINT src_row_pitch, src_slice_pitch;
        UINT alignment = volume->resource.device->surface_alignment;

        if (data->buffer_object)
            ERR("Loading a converted volume from a PBO.\n");
        if (format->flags & WINED3DFMT_FLAG_BLOCKS)
            ERR("Converting a block-based format.\n");

        dst_row_pitch = width * format->conv_byte_count;
        dst_row_pitch = (dst_row_pitch + alignment - 1) & ~(alignment - 1);
        dst_slice_pitch = dst_row_pitch * height;

        wined3d_volume_get_pitch(volume, &src_row_pitch, &src_slice_pitch);

        mem = HeapAlloc(GetProcessHeap(), 0, dst_slice_pitch * depth);
        format->convert(data->addr, mem, src_row_pitch, src_slice_pitch,
                dst_row_pitch, dst_slice_pitch, width, height, depth);
    }

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, data->buffer_object));
        checkGLcall("glBindBufferARB");
    }

    GL_EXTCALL(glTexSubImage3DEXT(GL_TEXTURE_3D, volume->texture_level, 0, 0, 0,
            width, height, depth,
            format->glFormat, format->glType, mem));
    checkGLcall("glTexSubImage3D");

    if (data->buffer_object)
    {
        GL_EXTCALL(glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0));
        checkGLcall("glBindBufferARB");
    }

    if (mem != data->addr)
        HeapFree(GetProcessHeap(), 0, mem);
}

static HRESULT wined3d_rendertarget_view_init(struct wined3d_rendertarget_view *view,
        const struct wined3d_rendertarget_view_desc *desc, struct wined3d_resource *resource,
        void *parent, const struct wined3d_parent_ops *parent_ops)
{
    const struct wined3d_gl_info *gl_info = &resource->device->adapter->gl_info;

    view->refcount = 1;
    view->parent = parent;
    view->parent_ops = parent_ops;

    view->format = wined3d_get_format(gl_info, desc->format_id);
    view->format_flags = view->format->flags[resource->gl_type];

    if (wined3d_format_is_typeless(view->format))
    {
        WARN("Trying to create view for typeless format %s.\n", debug_d3dformat(view->format->id));
        return E_INVALIDARG;
    }

    if (resource->type == WINED3D_RTYPE_BUFFER)
    {
        view->sub_resource_idx = 0;
        view->buffer_offset = desc->u.buffer.start_idx;
        view->width = desc->u.buffer.count;
        view->height = 1;
        view->depth = 1;
    }
    else
    {
        struct wined3d_texture *texture = texture_from_resource(resource);
        unsigned int depth_or_layer_count;

        if (resource->type == WINED3D_RTYPE_TEXTURE_3D)
            depth_or_layer_count = wined3d_texture_get_level_depth(texture, desc->u.texture.level_idx);
        else
            depth_or_layer_count = texture->layer_count;

        if (desc->u.texture.level_idx >= texture->level_count
                || desc->u.texture.layer_idx >= depth_or_layer_count
                || !desc->u.texture.layer_count
                || desc->u.texture.layer_count > depth_or_layer_count - desc->u.texture.layer_idx)
            return E_INVALIDARG;

        view->sub_resource_idx = desc->u.texture.level_idx;
        if (resource->type != WINED3D_RTYPE_TEXTURE_3D)
            view->sub_resource_idx += desc->u.texture.layer_idx * texture->level_count;
        view->buffer_offset = 0;
        view->width = wined3d_texture_get_level_width(texture, desc->u.texture.level_idx);
        view->height = wined3d_texture_get_level_height(texture, desc->u.texture.level_idx);
        view->depth = desc->u.texture.layer_count;
    }
    wined3d_resource_incref(view->resource = resource);

    return WINED3D_OK;
}

HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain, WINED3DDISPLAYMODE *mode)
{
    HRESULT hr;

    TRACE("swapchain %p, mode %p.\n", swapchain, mode);

    hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);

    TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
            mode->Width, mode->Height, mode->RefreshRate, debug_d3dformat(mode->Format));

    return hr;
}

static void wined3d_render_target_view_cs_init(void *object)
{
    struct wined3d_rendertarget_view *view = object;
    struct wined3d_resource *resource = view->resource;
    const struct wined3d_view_desc *desc = &view->desc;

    if (resource->type == WINED3D_RTYPE_BUFFER)
    {
        FIXME("Not implemented for resources %s.\n", debug_d3dresourcetype(resource->type));
    }
    else
    {
        struct wined3d_texture *texture = texture_from_resource(resource);
        unsigned int depth_or_layer_count;

        if (resource->type == WINED3D_RTYPE_TEXTURE_3D)
            depth_or_layer_count = wined3d_texture_get_level_depth(texture, desc->u.texture.level_idx);
        else
            depth_or_layer_count = texture->layer_count;

        if (resource->format->id != view->format->id
                || (view->layer_count != 1 && view->layer_count != depth_or_layer_count))
        {
            if (resource->format->gl_view_class != view->format->gl_view_class)
            {
                FIXME("Render target view not supported, resource format %s, view format %s.\n",
                        debug_d3dformat(resource->format->id), debug_d3dformat(view->format->id));
                return;
            }
            if (texture->swapchain && texture->swapchain->desc.backbuffer_count > 1)
            {
                FIXME("Swapchain views not supported.\n");
                return;
            }

            create_texture_view(&view->gl_view, texture->target, desc, texture, view->format);
        }
    }
}

HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
        struct wined3d_display_mode *mode)
{
    HRESULT hr;

    TRACE("swapchain %p, mode %p.\n", swapchain, mode);

    hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);

    TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
            mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));

    return hr;
}

void wined3d_unordered_access_view_clear_uint(struct wined3d_unordered_access_view *view,
        const struct wined3d_uvec4 *clear_value, struct wined3d_context *context)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *format;
    struct wined3d_resource *resource;
    struct wined3d_buffer *buffer;
    unsigned int offset, size;

    resource = view->resource;
    if (resource->type != WINED3D_RTYPE_BUFFER)
    {
        FIXME("Not implemented for %s resources.\n", debug_d3dresourcetype(resource->type));
        return;
    }

    if (!gl_info->supported[ARB_CLEAR_BUFFER_OBJECT])
    {
        FIXME("OpenGL implementation does not support ARB_clear_buffer_object.\n");
        return;
    }

    format = view->format;
    if (format->id != WINED3DFMT_R32_UINT && format->id != WINED3DFMT_R32_SINT
            && format->id != WINED3DFMT_R32G32B32A32_UINT
            && format->id != WINED3DFMT_R32G32B32A32_SINT)
    {
        FIXME("Not implemented for format %s.\n", debug_d3dformat(format->id));
        return;
    }

    buffer = buffer_from_resource(resource);
    wined3d_buffer_load_location(buffer, context, WINED3D_LOCATION_BUFFER);
    wined3d_unordered_access_view_invalidate_location(view, ~WINED3D_LOCATION_BUFFER);

    get_buffer_view_range(buffer, &view->desc, format, &offset, &size);
    context_bind_bo(context, buffer->buffer_type_hint, buffer->buffer_object);
    GL_EXTCALL(glClearBufferSubData(buffer->buffer_type_hint, format->glInternal,
            offset, size, format->glFormat, format->glType, clear_value));
    checkGLcall("clear unordered access view");
}

/* Context activation is done by the caller. */
void volume_load(const struct wined3d_volume *volume, struct wined3d_context *context, UINT level, BOOL srgb_mode)
{
    const struct wined3d_gl_info *gl_info = context->gl_info;
    const struct wined3d_format *format = volume->resource.format;

    TRACE("volume %p, context %p, level %u, srgb %#x, format %s (%#x).\n",
            volume, context, level, srgb_mode, debug_d3dformat(format->id), format->id);

    volume_bind_and_dirtify(volume, context);

    GL_EXTCALL(glTexImage3DEXT(GL_TEXTURE_3D, level, format->glInternal,
            volume->resource.width, volume->resource.height, volume->resource.depth,
            0, format->glFormat, format->glType, volume->resource.allocatedMemory));
    checkGLcall("glTexImage3D");

    /* When adding code releasing volume->resource.allocatedMemory to save
     * data keep in mind that GL_UNPACK_CLIENT_STORAGE_APPLE is enabled by
     * default if supported(GL_APPLE_client_storage). Thus do not release
     * volume->resource.allocatedMemory if GL_APPLE_client_storage is
     * supported. */
}

HRESULT wined3d_volume_create(struct wined3d_texture *container, const struct wined3d_resource_desc *desc,
        unsigned int level, struct wined3d_volume **volume)
{
    struct wined3d_device_parent *device_parent = container->resource.device->device_parent;
    const struct wined3d_parent_ops *parent_ops;
    struct wined3d_volume *object;
    void *parent;
    HRESULT hr;

    TRACE("container %p, width %u, height %u, depth %u, level %u, format %s, "
            "usage %#x, pool %s, volume %p.\n",
            container, desc->width, desc->height, desc->depth, level, debug_d3dformat(desc->format),
            desc->usage, debug_d3dpool(desc->pool), volume);

    if (!(object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object))))
        return E_OUTOFMEMORY;

    if (FAILED(hr = volume_init(object, container, desc, level)))
    {
        WARN("Failed to initialize volume, returning %#x.\n", hr);
        HeapFree(GetProcessHeap(), 0, object);
        return hr;
    }

    if (FAILED(hr = device_parent->ops->volume_created(device_parent,
            wined3d_texture_get_parent(container), object, &parent, &parent_ops)))
    {
        WARN("Failed to create volume parent, hr %#x.\n", hr);
        wined3d_volume_destroy(object);
        return hr;
    }

    TRACE("Created volume %p, parent %p, parent_ops %p.\n", object, parent, parent_ops);

    object->resource.parent = parent;
    object->resource.parent_ops = parent_ops;
    *volume = object;

    return WINED3D_OK;
}

static HRESULT wined3d_unordered_access_view_init(struct wined3d_unordered_access_view *view,
        const struct wined3d_unordered_access_view_desc *desc, struct wined3d_resource *resource,
        void *parent, const struct wined3d_parent_ops *parent_ops)
{
    const struct wined3d_gl_info *gl_info = &resource->device->adapter->gl_info;

    view->refcount = 1;
    view->parent = parent;
    view->parent_ops = parent_ops;

    view->format = wined3d_get_format(gl_info, desc->format_id);

    if (wined3d_format_is_typeless(view->format))
    {
        WARN("Trying to create view for typeless format %s.\n", debug_d3dformat(view->format->id));
        return E_INVALIDARG;
    }

    if (resource->type != WINED3D_RTYPE_BUFFER)
    {
        struct wined3d_texture *texture = texture_from_resource(resource);
        unsigned int depth_or_layer_count;

        if (resource->type == WINED3D_RTYPE_TEXTURE_3D)
            depth_or_layer_count = wined3d_texture_get_level_depth(texture, desc->u.texture.level_idx);
        else
            depth_or_layer_count = texture->layer_count;

        if (desc->u.texture.level_idx >= texture->level_count
                || desc->u.texture.layer_idx >= depth_or_layer_count
                || !desc->u.texture.layer_count
                || desc->u.texture.layer_count > depth_or_layer_count - desc->u.texture.layer_idx)
            return E_INVALIDARG;
    }
    wined3d_resource_incref(view->resource = resource);

    return WINED3D_OK;
}

HRESULT resource_init(struct wined3d_resource *resource, struct wined3d_device *device,
        enum wined3d_resource_type type, const struct wined3d_format *format,
        enum wined3d_multisample_type multisample_type, UINT multisample_quality,
        DWORD usage, enum wined3d_pool pool, UINT width, UINT height, UINT depth, UINT size,
        void *parent, const struct wined3d_parent_ops *parent_ops,
        const struct wined3d_resource_ops *resource_ops)
{
    const struct wined3d *d3d = device->wined3d;
    const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
    static const enum wined3d_gl_resource_type gl_resource_types[][4] =
    {
        /* 0                            */ {WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_SURFACE        */ {WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_VOLUME         */ {WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_TEXTURE        */ {WINED3D_GL_RES_TYPE_TEX_2D,
                WINED3D_GL_RES_TYPE_TEX_RECT, WINED3D_GL_RES_TYPE_RB, WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_VOLUME_TEXTURE */ {WINED3D_GL_RES_TYPE_TEX_3D, WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_CUBE_TEXTURE   */ {WINED3D_GL_RES_TYPE_TEX_CUBE, WINED3D_GL_RES_TYPE_COUNT},
        /* WINED3D_RTYPE_BUFFER         */ {WINED3D_GL_RES_TYPE_BUFFER, WINED3D_GL_RES_TYPE_COUNT},
    };
    enum wined3d_gl_resource_type gl_type = WINED3D_GL_RES_TYPE_COUNT;
    enum wined3d_gl_resource_type base_type = gl_resource_types[type][0];

    resource_check_usage(usage);

    if (base_type != WINED3D_GL_RES_TYPE_COUNT)
    {
        unsigned int i;
        BOOL tex_2d_ok = FALSE;

        for (i = 0; (gl_type = gl_resource_types[type][i]) != WINED3D_GL_RES_TYPE_COUNT; i++)
        {
            if ((usage & WINED3DUSAGE_RENDERTARGET) && !(format->flags[gl_type] & WINED3DFMT_FLAG_RENDERTARGET))
            {
                WARN("Format %s cannot be used for render targets.\n", debug_d3dformat(format->id));
                continue;
            }
            if ((usage & WINED3DUSAGE_DEPTHSTENCIL) &&
                    !(format->flags[gl_type] & (WINED3DFMT_FLAG_DEPTH | WINED3DFMT_FLAG_STENCIL)))
            {
                WARN("Format %s cannot be used for depth/stencil buffers.\n", debug_d3dformat(format->id));
                continue;
            }
            if (wined3d_settings.offscreen_rendering_mode == ORM_FBO
                    && usage & (WINED3DUSAGE_RENDERTARGET | WINED3DUSAGE_DEPTHSTENCIL)
                    && !(format->flags[gl_type] & WINED3DFMT_FLAG_FBO_ATTACHABLE))
            {
                WARN("Render target or depth stencil is not FBO attachable.\n");
                continue;
            }
            if ((usage & WINED3DUSAGE_TEXTURE) && !(format->flags[gl_type] & WINED3DFMT_FLAG_TEXTURE))
            {
                WARN("Format %s cannot be used for texturing.\n", debug_d3dformat(format->id));
                continue;
            }
            if (((width & (width - 1)) || (height & (height - 1)))
                    && !gl_info->supported[ARB_TEXTURE_NON_POWER_OF_TWO]
                    && !gl_info->supported[WINED3D_GL_NORMALIZED_TEXRECT]
                    && gl_type == WINED3D_GL_RES_TYPE_TEX_2D)
            {
                TRACE("Skipping 2D texture type to try texture rectangle.\n");
                tex_2d_ok = TRUE;
                continue;
            }
            break;
        }

        if (gl_type == WINED3D_GL_RES_TYPE_COUNT)
        {
            if (tex_2d_ok)
            {
                /* Non power of 2 texture and rectangle textures or renderbuffers do not work.
                 * Use 2D textures, the texture code will pad to a power of 2 size. */
                gl_type = WINED3D_GL_RES_TYPE_TEX_2D;
            }
            else if (pool == WINED3D_POOL_SCRATCH)
            {
                /* Needed for proper format information. */
                gl_type = base_type;
            }
            else
            {
                WARN("Did not find a suitable GL resource type, resource type, d3d type %u.\n", type);
                return WINED3DERR_INVALIDCALL;
            }
        }
    }

    if (base_type != WINED3D_GL_RES_TYPE_COUNT
            && (format->flags[base_type] & (WINED3DFMT_FLAG_BLOCKS | WINED3DFMT_FLAG_BLOCKS_NO_VERIFY))
            == WINED3DFMT_FLAG_BLOCKS)
    {
        UINT width_mask = format->block_width - 1;
        UINT height_mask = format->block_height - 1;
        if (width & width_mask || height & height_mask)
            return WINED3DERR_INVALIDCALL;
    }

    resource->ref = 1;
    resource->device = device;
//.........这里部分代码省略.........

HRESULT CDECL wined3d_swapchain_resize_buffers(struct wined3d_swapchain *swapchain, unsigned int buffer_count,
        unsigned int width, unsigned int height, enum wined3d_format_id format_id,
        enum wined3d_multisample_type multisample_type, unsigned int multisample_quality)
{
    BOOL update_desc = FALSE;

    TRACE("swapchain %p, buffer_count %u, width %u, height %u, format %s, "
            "multisample_type %#x, multisample_quality %#x.\n",
            swapchain, buffer_count, width, height, debug_d3dformat(format_id),
            multisample_type, multisample_quality);

    if (buffer_count && buffer_count != swapchain->desc.backbuffer_count)
        FIXME("Cannot change the back buffer count yet.\n");

    if (!width || !height)
    {
        /* The application is requesting that either the swapchain width or
         * height be set to the corresponding dimension in the window's
         * client rect. */

        RECT client_rect;

        if (!swapchain->desc.windowed)
            return WINED3DERR_INVALIDCALL;

        if (!GetClientRect(swapchain->device_window, &client_rect))
        {
            ERR("Failed to get client rect, last error %#x.\n", GetLastError());
            return WINED3DERR_INVALIDCALL;
        }

        if (!width)
            width = client_rect.right;

        if (!height)
            height = client_rect.bottom;
    }

    if (width != swapchain->desc.backbuffer_width
            || height != swapchain->desc.backbuffer_height)
    {
        swapchain->desc.backbuffer_width = width;
        swapchain->desc.backbuffer_height = height;
        update_desc = TRUE;
    }

    if (format_id == WINED3DFMT_UNKNOWN)
    {
        if (!swapchain->desc.windowed)
            return WINED3DERR_INVALIDCALL;
        format_id = swapchain->original_mode.format_id;
    }

    if (format_id != swapchain->desc.backbuffer_format)
    {
        swapchain->desc.backbuffer_format = format_id;
        update_desc = TRUE;
    }

    if (multisample_type != swapchain->desc.multisample_type
            || multisample_quality != swapchain->desc.multisample_quality)
    {
        swapchain->desc.multisample_type = multisample_type;
        swapchain->desc.multisample_quality = multisample_quality;
        update_desc = TRUE;
    }

    if (update_desc)
    {
        HRESULT hr;
        UINT i;

        if (FAILED(hr = wined3d_texture_update_desc(swapchain->front_buffer, swapchain->desc.backbuffer_width,
                swapchain->desc.backbuffer_height, swapchain->desc.backbuffer_format,
                swapchain->desc.multisample_type, swapchain->desc.multisample_quality, NULL, 0)))
            return hr;

        for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
        {
            if (FAILED(hr = wined3d_texture_update_desc(swapchain->back_buffers[i], swapchain->desc.backbuffer_width,
                    swapchain->desc.backbuffer_height, swapchain->desc.backbuffer_format,
                    swapchain->desc.multisample_type, swapchain->desc.multisample_quality, NULL, 0)))
                return hr;
        }
    }

    swapchain_update_render_to_fbo(swapchain);
    swapchain_update_draw_bindings(swapchain);

    return WINED3D_OK;
}

/* GL locking is done by the caller */
static void drawStridedSlow(IWineD3DDevice *iface, const struct wined3d_context *context,
        const struct wined3d_stream_info *si, UINT NumVertexes, GLenum glPrimType,
        const void *idxData, UINT idxSize, UINT startIdx)
{
    unsigned int               textureNo    = 0;
    const WORD                *pIdxBufS     = NULL;
    const DWORD               *pIdxBufL     = NULL;
    UINT vx_index;
    IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
    const UINT *streamOffset = This->stateBlock->streamOffset;
    long                      SkipnStrides = startIdx + This->stateBlock->loadBaseVertexIndex;
    BOOL                      pixelShader = use_ps(This->stateBlock);
    BOOL specular_fog = FALSE;
    const BYTE *texCoords[WINED3DDP_MAXTEXCOORD];
    const BYTE *diffuse = NULL, *specular = NULL, *normal = NULL, *position = NULL;
    const struct wined3d_gl_info *gl_info = context->gl_info;
    UINT texture_stages = gl_info->limits.texture_stages;
    const struct wined3d_stream_info_element *element;
    UINT num_untracked_materials;
    DWORD tex_mask = 0;

    TRACE("Using slow vertex array code\n");

    /* Variable Initialization */
    if (idxSize != 0) {
        /* Immediate mode drawing can't make use of indices in a vbo - get the data from the index buffer.
         * If the index buffer has no vbo(not supported or other reason), or with user pointer drawing
         * idxData will be != NULL
         */
        if(idxData == NULL) {
            idxData = buffer_get_sysmem((struct wined3d_buffer *) This->stateBlock->pIndexData);
        }

        if (idxSize == 2) pIdxBufS = idxData;
        else pIdxBufL = idxData;
    } else if (idxData) {
        ERR("non-NULL idxData with 0 idxSize, this should never happen\n");
        return;
    }

    /* Start drawing in GL */
    glBegin(glPrimType);

    if (si->use_map & (1 << WINED3D_FFP_POSITION))
    {
        element = &si->elements[WINED3D_FFP_POSITION];
        position = element->data + streamOffset[element->stream_idx];
    }

    if (si->use_map & (1 << WINED3D_FFP_NORMAL))
    {
        element = &si->elements[WINED3D_FFP_NORMAL];
        normal = element->data + streamOffset[element->stream_idx];
    }
    else
    {
        glNormal3f(0, 0, 0);
    }

    num_untracked_materials = context->num_untracked_materials;
    if (si->use_map & (1 << WINED3D_FFP_DIFFUSE))
    {
        element = &si->elements[WINED3D_FFP_DIFFUSE];
        diffuse = element->data + streamOffset[element->stream_idx];

        if (num_untracked_materials && element->format_desc->format != WINED3DFMT_B8G8R8A8_UNORM)
            FIXME("Implement diffuse color tracking from %s\n", debug_d3dformat(element->format_desc->format));
    }
    else
    {
        glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
    }

    if (si->use_map & (1 << WINED3D_FFP_SPECULAR))
    {
        element = &si->elements[WINED3D_FFP_SPECULAR];
        specular = element->data + streamOffset[element->stream_idx];

        /* special case where the fog density is stored in the specular alpha channel */
        if (This->stateBlock->renderState[WINED3DRS_FOGENABLE]
                && (This->stateBlock->renderState[WINED3DRS_FOGVERTEXMODE] == WINED3DFOG_NONE
                    || si->elements[WINED3D_FFP_POSITION].format_desc->format == WINED3DFMT_R32G32B32A32_FLOAT)
                && This->stateBlock->renderState[WINED3DRS_FOGTABLEMODE] == WINED3DFOG_NONE)
        {
            if (gl_info->supported[EXT_FOG_COORD])
            {
                if (element->format_desc->format == WINED3DFMT_B8G8R8A8_UNORM) specular_fog = TRUE;
                else FIXME("Implement fog coordinates from %s\n", debug_d3dformat(element->format_desc->format));
            }
            else
            {
                static BOOL warned;

                if (!warned)
                {
                    /* TODO: Use the fog table code from old ddraw */
                    FIXME("Implement fog for transformed vertices in software\n");
                    warned = TRUE;
                }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        case WINED3DFMT_R32G32_FLOAT:
            GL_EXTCALL(glVertexAttrib2fvARB(index, ptr));
            break;