DirectX-纹理渲染结果不正确 [英] directx - texture render result is incorrect

问题描述

情况1 ：

我通过

case 1:
I create the texture by

    D3DXCreateTexture(device, width, height, 0, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &texture)

并更新

    D3DLOCKED_RECT lr;
    HRESULT hr = texture->LockRect(0, &lr, NULL, 0);
    ConvertRGB2RGBA(width, height, pixels, stride, (unsigned char*)(lr.pBits), lr.Pitch);
    texture->UnlockRect(0);

渲染结果显示为：

我想要的是表面上的纯白色。

What I want is pure white on the surface.

所有顶点的z值等于0.0f。

情况2 ：< br>
如果我通过

case 2:
If I create the texture by

    D3DXCreateTextureFromFile(device, "e:\\test.bmp",  &texture);

并且不更新纹理，它表示绝对正确。

and do not update the texture, it shows absolutly correct.

情况3 ：

如果我以情况2 从文件中创建纹理，并以情况更新纹理1 ，结果不正确，有test.bmp内容。

case 3:
If I create the texture from file as case 2, and update the texture as case 1, the result is incorrect, there is test.bmp content remains slightly.

结论：

更新纹理一定有问题。

conclusion:
There must be something wrong with updating texture. What's wrong???

已解决！
将级别参数更改为1，然后就可以使用。

SOLVED!!!
Change the levels param to 1, then it works.

    D3DXCreateTexture(device, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &texture)

推荐答案

将级别参数更改为1，然后可以使用。

Change the levels param to 1, then it works.

D3DXCreateTexture(device, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &texture)

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