通过

PFND3D10DDI_RESOURCEMAP回调函数 （d3d10umddi.h）

  • 项目

ResourceMap 函数映射资源的子资源。

语法

PFND3D10DDI_RESOURCEMAP Pfnd3d10ddiResourcemap;

void Pfnd3d10ddiResourcemap(
  D3D10DDI_HDEVICE unnamedParam1,
  D3D10DDI_HRESOURCE unnamedParam2,
  UINT unnamedParam3,
  D3D10_DDI_MAP unnamedParam4,
  UINT unnamedParam5,
  D3D10DDI_MAPPED_SUBRESOURCE *unnamedParam6
)
{...}

参数

unnamedParam1

hDevice [in]

显示设备的句柄（图形上下文）。

unnamedParam2

hResource [in]

要映射的资源的句柄。

unnamedParam3

子资源 [in]

一个索引，指示要映射的子资源。

unnamedParam4

DDIMap [in]

一个 D3D10_DDI_MAP类型的值，指示将子资源映射到的访问级别。

unnamedParam5

标志 [in]

一个 D3D10_DDI_MAP_FLAG类型化值，指示如何映射子资源。

unnamedParam6

pMappedSubResource [out]

指向 D3D10DDI_MAPPED_SUBRESOURCE 结构的指针，该结构接收有关映射的子资源的信息。

返回值

没有

言论

驱动程序可以使用 pfnSetErrorCb 回调函数来设置错误代码。

驱动程序可以调用 pfnSetErrorCb 来设置D3DDDIERR_DEVICEREMOVED错误代码。

通常，在运行时收到D3DDDIERR_DEVICEREMOVED错误代码后，运行时将不再调用用户模式显示驱动程序（除了取消绑定、销毁和其他清理作）。

通常，每次调用用户模式显示驱动程序的 ResourceMap 函数时，都会调用驱动程序的 ResourceUnmap 函数;但是，在运行时收到D3DDDIERR_DEVICEREMOVED错误代码后，它不会调用 ResourceUnmap。

如果运行时在 标志 参数中传递了D3D10_DDI_MAP_FLAG_DONOTWAIT标志，驱动程序可以调用 pfnSetErrorCb 来设置DXGI_DDI_ERR_WASSTILLDRAWING错误代码。

驱动程序可以实现一对 ResourceMap 和 ResourceUnmap 函数，这些函数可以包含 开关 语句来处理各种功能。 也就是说，驱动程序可以实现一个 ResourceMap-ResourceUnmap 对，并且可以将 D3D10DDI_DEVICEFUNCS 结构的以下成员设置为指向此实现对：

  • pfnDynamicIABufferMapDiscard-pfnDynamicIABufferUnmap

  • pfnDynamicIABufferMapNoOverwrite-pfnDynamicIABufferUnmap

  • pfnDynamicConstantBufferMapDiscard-pfnDynamicConstantBufferUnmap

  • pfnDynamicResourceMapDiscard-pfnDynamicResourceUnmap

  • pfnStagingResourceMap-pfnStagingResourceUnmap

但是，为了提高性能，驱动程序可以实现单独的映射取消映射函数对。 Microsoft Direct3D 运行时根据资源类型（例如缓冲区或纹理）以及创建和映射资源时指定的 D3D10_DDI_RESOURCE_USAGE、D3D10_DDI_RESOURCE_BIND_FLAG和 D3D10_DDI_MAP 值调用相应的映射取消映射函数对。

注意

如果要映射和取消映射的资源类型是缓冲区，则 Direct3D 运行时会将 Subresource 参数设置为零。
尽管 Direct3D 运行时通常为动态纹理调用 pfnDynamicResourceMapDiscard-pfnDynamicResourceUnmap 函数对，但运行时还会为使用D3D10_DDI_BIND_SHADER_RESOURCE绑定标志集创建的动态缓冲区调用此函数对。

以下示例代码显示 Direct3D 运行时调用特定映射或取消映射函数时设置的值：

//-----------------------------------------------
void APIENTRY UMDevice::DynamicIABufferMapNoOverwrite_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.ResourceDimension == D3D10DDIRESOURCE_BUFFER &&
        pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        (pResource->m_DDICreateResource.BindFlags & (D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        !(pResource->m_DDICreateResource.BindFlags & ~(D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        Subresource == 0 &&
        MapType == D3D10_DDI_MAP_WRITE_NOOVERWRITE &&
        MapFlags == 0 );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicIABufferMapDiscard_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.ResourceDimension == D3D10DDIRESOURCE_BUFFER &&
        pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        (pResource->m_DDICreateResource.BindFlags & (D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        !(pResource->m_DDICreateResource.BindFlags & ~(D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        Subresource == 0 &&
        MapType == D3D10_DDI_MAP_WRITE_DISCARD &&
        MapFlags == 0 );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicIABufferUnmap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.ResourceDimension == D3D10DDIRESOURCE_BUFFER &&
        pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        (pResource->m_DDICreateResource.BindFlags & (D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        !(pResource->m_DDICreateResource.BindFlags & ~(D3D10_DDI_BIND_VERTEX_BUFFER | D3D10_DDI_BIND_INDEX_BUFFER)) &&
        Subresource == 0 );
 
    pResource->Unmap( Subresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicConstantBufferMapDiscard_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.ResourceDimension == D3D10DDIRESOURCE_BUFFER &&
        pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        (pResource->m_DDICreateResource.BindFlags & D3D10_DDI_BIND_CONSTANT_BUFFER) &&
        !(pResource->m_DDICreateResource.BindFlags & ~D3D10_DDI_BIND_CONSTANT_BUFFER) &&
        Subresource == 0 &&
        MapType == D3D10_DDI_MAP_WRITE_DISCARD &&
        MapFlags == 0 );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicConstantBufferUnmap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.ResourceDimension == D3D10DDIRESOURCE_BUFFER &&
        pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        (pResource->m_DDICreateResource.BindFlags & D3D10_DDI_BIND_CONSTANT_BUFFER) &&
        !(pResource->m_DDICreateResource.BindFlags & ~D3D10_DDI_BIND_CONSTANT_BUFFER) &&
        Subresource == 0 );
 
    pResource->Unmap( Subresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicResourceMapDiscard_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        pResource->m_DDICreateResource.Subresources == 1 &&
        Subresource == 0 &&
        MapType == D3D10_DDI_MAP_WRITE_DISCARD &&
        MapFlags == 0 );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::DynamicResourceUnmap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_DYNAMIC &&
        pResource->m_DDICreateResource.Subresources == 1 &&
        Subresource == 0 );
 
    pResource->Unmap( Subresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::StagingResourceMap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_STAGING &&
        (MapType == D3D10_DDI_MAP_READ || MapType == D3D10_DDI_MAP_WRITE || MapType == D3D10_DDI_MAP_READWRITE) );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::StagingResourceUnmap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage == D3D10_DDI_USAGE_STAGING );
 
    pResource->Unmap( Subresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::ResourceMap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource,
    D3D10_DDI_MAP MapType,
    UINT MapFlags,
    D3D10DDI_MAPPED_SUBRESOURCE* pMappedSubresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage != D3D10_DDI_USAGE_DYNAMIC &&
        pResource->m_DDICreateResource.Usage != D3D10_DDI_USAGE_STAGING );
 
    // Generally true; but allow last second change:
    assert( false );
 
    pResource->Map( Subresource, MapType, MapFlags, pMappedSubresource );
}
 
//------------------------------------------------
void APIENTRY UMDevice::ResourceUnmap_Default(
    D3D10DDI_HDEVICE hDevice,
    D3D10DDI_HRESOURCE hResource,
    UINT Subresource )
{
    UMDevice* pThis = UMDevice::CastFrom( hDevice );
    UMResource* pResource = UMResource::CastFrom( hResource );
 
    assert( pResource->m_DDICreateResource.Usage != D3D10_DDI
_USAGE_DYNAMIC &&
        pResource->m_DDICreateResource.Usage != D3D10_DDI_USAGE_STAGING );
 
    // Generally true; but allow last second change:
    assert( false );
 
    pResource->Unmap( Subresource );
}

对输入值的限制

对于 Windows 显示驱动程序模型 （WDDM） 1.3 及更高版本的驱动程序，Microsoft Direct3D 运行时提供此函数使用的一组受限输入值。 有关所有受限值的列表，请参阅 Direct3D 呈现性能改进。

要求

要求 价值
最低支持的客户端 在 Windows Vista 和更高版本的 Windows作系统中可用。
目标平台 桌面
标头 d3d10umddi.h （包括 D3d10umddi.h）

另请参阅

D3D10DDI_DEVICEFUNCS

D3D10DDI_MAPPED_SUBRESOURCE

D3D10_DDI_MAP

D3D10_DDI_MAP_FLAG

D3D10_DDI_RESOURCE_BIND_FLAG

D3D10_DDI_RESOURCE_USAGE

ResourceUnmap

pfnSetErrorCb