Bug 1390 - GLPixelBuffer.GLPixelAttributes::convert(GL, int, boolean) failed on unsupported GL data format/type
Summary: GLPixelBuffer.GLPixelAttributes::convert(GL, int, boolean) failed on unsuppor...
Status: RESOLVED FIXED
Alias: None
Product: Jogl
Classification: JogAmp
Component: opengl (show other bugs)
Version: 2.4.0
Hardware: All all
: P4 normal
Assignee: Sven Gothel
URL:
Depends on: 817
Blocks:
  Show dependency tree / graph
 
Reported: 2019-09-05 05:23 CEST by Sven Gothel
Modified: 2019-09-05 05:39 CEST (History)
0 users

See Also:
Type: DEFECT
SCM Refs:
90760ac8eebe7431ac7392e4ebf3f9009e63cd72
Workaround: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Sven Gothel 2019-09-05 05:23:46 CEST 
GLPixelBuffer.GLPixelAttributes::convert(GL, int, boolean) failed on unsupported GL data format/type

On Mesa/AMD for GLPBuffer chosen GLCaps used rgba 10/10/10/2
and the GLContext set default values:
GL_IMPLEMENTATION_COLOR_READ_FORMAT: 0x1908 GL_RGBA
GL_IMPLEMENTATION_COLOR_READ_TYPE: 0x8368 GL_UNSIGNED_INT_2_10_10_10_REV

GLPixelBuffer.GLPixelAttributes::getPixelFormat(int format, int type)
currently does not handle the type GL_UNSIGNED_INT_2_10_10_10_REV
and hence returned a null PixelFormat.

Therefor the ctor GLPixelAttributes failed and threw the exception:
"Caught GLException: Could not find PixelFormat for format and/or type:
 PixelAttributes[fmt 0x1908, type 0x8368, null]"

Solution is to have the GLContext default values pre-validated in the convert(..) method and to use default GL_RGBA and GL_UNSIGNED_BYTE fallback values if not supported. This is most important to be future proof.

Later we may shall add these 32bit coding 2+10+10+10 and its reverse.
Comment 1 Sven Gothel 2019-09-05 05:39:36 CEST 
commit 90760ac8eebe7431ac7392e4ebf3f9009e63cd72