blitFromMemory problem on iPhone

[jsding]

Hi,

I try update part of my texture with the following code:

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Ogre::Box box(dstl, dstt, dstr, dstb);
Ogre::PixelBox srcBox = dstPixelBox.getSubVolume(box);
texture->getBuffer()->blitFromMemory(srcBox, box);

This works well on Windows, but crash with

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Unsupported texture format

the crash code is in OgreGLESHardwarePixelBuffer.cpp

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if(data.getWidth() != data.rowPitch)
            {
                // TODO
                OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
                            "Unsupported texture format",
                            "GLESTextureBuffer::upload");
            }

            if(data.getHeight()*data.getWidth() != data.slicePitch)
            {
                // TODO
                OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
                            "Unsupported texture format",
                            "GLESTextureBuffer::upload");
            }

on iPhone

Is this a bug or GLES limitation?

Thanks.

[masterfalcon]

What format is the texture? What are the dimensions, etc. Which of the two exceptions is it hitting?

[jsding]

Hi, masterfalcon,

The box: (left, top, right, bottom) is (610, 142, 802, 229)
the texture size is (2048, 1024)

the texture format is PF_A8R8G8B8

and the data.getWidth() == 192
data.rowPitch == 2048

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            if(data.getWidth() != data.rowPitch)
            {
                // TODO
                OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
                            "Unsupported texture format",
                            "GLESTextureBuffer::upload");
            }

hitting.

Thanks for your help

What format is the texture? What are the dimensions, etc. Which of the two exceptions is it hitting?

[jsding]

BTW: blitFromMemory the whole texture pixelbox works well.

[jsding]

If I comment the first check, the second will hitting.

[jsding]

Any idea?
Thanks

[masterfalcon]

At the moment only blitting the entire texture is supported, the reason being that pixel packing options are more limited on GL ES. You could file a feature request on our bug tracker, this is something that would be useful.

[jsding]

Thanks, masterfalcon. This is not a big problem for me. blitting a 2048 x 2048 texture will cost about 70ms on iPhone4. that make frame rate suddenly drop.

At the moment only blitting the entire texture is supported, the reason being that pixel packing options are more limited on GL ES. You could file a feature request on our bug tracker, this is something that would be useful.