Created attachment 121740 [details] Assertion that also shows the problem. For reference, use 'git blame src/mesa/drivers/common/meta_blit.c 9e30d66b'. Assume the blit is an MSAA-MSAA blit from a GL_TEXTURE_2D_MULTISAMPLE surface with base type GL_INT. Line 294 sets dst_is_msaa true. Line 313 sets shader_index to BLIT_MSAA_SHADER_2D_MULTISAMPLE_COPY. Line 339 increments shader_index by 5, and it is now BLIT_1X_MSAA_SHADER_2D_MULTISAMPLE_ARRAY_RESOLVE. Similar problems exist for GL_TEXTURE_2D_MULTISAMPLE_ARRAY blits. You really only notice this problem is a blit of one kind is followed by a blit of a kind that conflicts. We should have piglit tests for this. I noticed this because, while I was making other changes, I added an assertion like the one in the attachment. Surely dst_is_msaa must be false when doing a resolve blit. Alas.
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