[gles2] A black screen displayed when running OpenGL-Blit case

Submitted by Shuang He `@shuang`

Assigned to Ian Romanick

Description

System Environment:

Libdrm: (master)2.4.26 Mesa: (master)9a00dd97 Xserver: (master)xorg-server-1.10.99.901-29-g02d11af01211da55e9d93fe0e1851a0c6fe57472 Xf86_video_intel: (master)2.15.0-86-gff262aca9c46b7616c59d8e8f04d33a5bbc6e324

Bug detailed description:

I tried to run some opengles cases. The case "opengl-simple triangle" is correct, but when I ran case "opengl-blit with blend", there will be nothing but a black screen displayed, and the case resulted as "pass".

Reproduce steps: 1.install libbltscommon1 from http://download.meego.com/live/devel:/quality:/tests/Trunk/i586/ 2.install blts-opengles2-tests-0.0.13-1 from http://download.meego.com/live/devel:/quality:/tests/Trunk/i586/

3.blts-opengles2-tests -e 6 (run OpenGL-Blit with blend)

EXPECTED OUTCOME:

a black screen displayed

ACTUAL OUTCOME: