Is anti aliasing disabled?
I doubt this is because of rounding issues as the wrong pixels seems to have random colors. Maybe some bitwise operators are broken. Is the rendering of the OGL backend fine? But in the end, such issues sound like a broken shader compiler / code generator, so there is nothing we can do but to report this issue to intel.
I doubt this is because of rounding issues as the wrong pixels seems to have random colors. Maybe some bitwise operators are broken. Is the rendering of the OGL backend fine? But in the end, such issues sound like a broken shader compiler / code generator, so there is nothing we can do but to report this issue to intel.