[Mesa-dev] [Bug 89312] [regression, bisected] main: Added entry points for CopyTextureSubImage*D. (d6b7c40cecfe01)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89312

--- Comment #2 from Samuel Iglesias <siglesias at igalia.com> ---
After looking into it, I found that the test is expecting to receive a
GL_INVALID_ENUM error when calling glCopyTexSubImage2D() with target different
than GL_TEXTURE_2D and GL_TEXTURE_CUBE_MAP_*.

By looking at OpenGL ES 3.0 spec, it says in section 3.8.3 "Texture Image
Specification"

   "The target arguments of TexSubImage2D and CopyTexSubImage2D must be one of
TEXTURE_2D, TEXTURE_CUBE_MAP_POSITIVE_X, TEXTURE_CUBE_MAP_NEGATIVE_X,
TEXTURE_CUBE_MAP_POSITIVE_Y, TEXTURE_CUBE_MAP_NEGATIVE_Y,
TEXTURE_CUBE_MAP_POSITIVE_Z, or TEXTURE_CUBE_MAP_NEGATIVE_Z,"

Also from the same spec, section 2.5 "GL Errors"

"If a command that requires an enumerated value is passed a symbolic constant
that is not one of those specified as allowable for that command, the error
INVALID_ENUM is generated."

This is a snip of the test output:

 <Section Name="" Description="GL_INVALID_ENUM is generated if target is
invalid.">
  <Text>glCopyTexSubImage2D(0x00000000, 0, 0, 0, 0, 0, 4, 4);</Text>
  <Text>glGetError();</Text>
  <Text>// GL_NO_ERROR returned</Text>
  <Text>// ERROR: expected GL_INVALID_ENUM</Text>
</Section>

Similarly for glCopyTexSubImage3D()'s test case:

OpenGL ES 3.0 spec, it says in section 3.8.3 "Texture Image Specification"
   "[...] the target arguments of TexSubImage3D and CopyTexSubImage3D must be
TEXTURE_3D or TEXTURE_2D_ARRAY."

This is a snip of dEQP-GLES3.functional.negative_api.texture.copytexsubimage3d
test output:

 <Section Name="" Description="GL_INVALID_ENUM is generated if target is
invalid.">
  <Text>glCopyTexSubImage3D(0x00000000, 0, 0, 0, 0, 0, 0, 4, 4);</Text>
  <Text>glGetError();</Text>
  <Text>// GL_NO_ERROR returned</Text>
  <Text>// ERROR: expected GL_INVALID_ENUM</Text>
</Section>

Hope this helps,

Sam

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