[Mesa-dev] [Bug 89586] Drivers/DRI/swrast

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89586

--- Comment #34 from Dan Sebald <daniel.sebald at ieee.org> ---
Created attachment 114599
  --> https://bugs.freedesktop.org/attachment.cgi?id=114599&action=edit
swrast Gallium with patch Piglit test images

SWRAST_DRI.SO GALLIUM PATCH

By making that simple change in src/mesa/state_tracker/st_cb_drawpixels.c that
allows the driver to proceed if the input image size is greater than
GL_MAX_TEXTURE_SIZE, I've found that the Gallium driver will complete the
monotonic image grandients and generally looks good except for the last pixel
(line) missing for both positive X and Y tests.  Again, this is just an initial
investigation, so we aren't sure yet whether there is a shortcoming in the test
algorithm, or whether the Gallium driver might not be meeting the OpenGL
standard for glDrawPixels exactly, e.g., a boundary condition isn't being
satisfy such as pixel centers on the left or bottom box boundary are considered
in the box.

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