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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - The big SKQP bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105301#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - The big SKQP bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105301">bug 105301</a>
from <span class="vcard"><a class="email" href="mailto:dongseong.hwang@intel.com" title="Dongseong Hwang <dongseong.hwang@intel.com>"> <span class="fn">Dongseong Hwang</span></a>
</span></b>
<pre>Correction: in Chromium case above, it uses GL_TEXTURE_2D.
The source of all confusion is EGL_KHR_gl_image spec, which allows to create
eglImage from regular texture.
<a href="https://www.khronos.org/registry/EGL/extensions/KHR/EGL_KHR_gl_image.txt">https://www.khronos.org/registry/EGL/extensions/KHR/EGL_KHR_gl_image.txt</a>
Unfortunately, the spec doesn't define which texture <target> parameter we must
use for EGLImageTargetTexture2DOES API.
ARM driver allows TEXTURE_BINDING_EXTERNAL_OES but Mesa allows only TEXTURE_2D
in this case.
in EGL_KHR_gl_image case, we create eglImage by eglCreateImageKHR with
EGL_GL_TEXTURE_2D_KHR <target> parameter, but the spec doesn't explicitly say
which TEXTURE_BINDING_EXTERNAL_OES or TEXTURE_2D must be used for
EGLImageTargetTexture2DOES.
Worth to note, EGL_EXT_image_dma_buf_import spec also doesn't explicitly say
which TEXTURE_BINDING_EXTERNAL_OES or TEXTURE_2D must be used for
EGLImageTargetTexture2DOES. in this case, we create eglImage by
eglCreateImageKHR with EGL_LINUX_DMA_BUF_EXT <target> parameter, and use
TEXTURE_BINDING_EXTERNAL_OES for EGLImageTargetTexture2DOES without any spec
support.
It's really gray area. I'm not sure which skia or mesa we should change.</pre>
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