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authorPaul Berry <[email protected]>2013-03-26 13:24:43 -0700
committerPaul Berry <[email protected]>2013-04-02 15:19:13 -0700
commit41e4bccc754bf3942255630ddd03601b95096c03 (patch)
treeaa0ff537e332a02d95dcf9b314d0327027a8e925 /src/gallium/drivers/i915
parent2ad0ed63497f27b77be49cb04a6dc9df21fe75f2 (diff)
i965: Reduce code duplication in handling of depth, stencil, and HiZ.
This patch consolidates duplicate code in the brw_depthbuffer and gen7_depthbuffer state atoms. Previously, these state atoms contained 5 chunks of code for emitting the _3DSTATE_DEPTH_BUFFER packet (3 for Gen4-6 and 2 for Gen7). Also a lot of logic for determining the appropriate buffer setup was duplicated between the Gen4-6 and Gen7 functions. This refactor splits the code into three separate functions: brw_emit_depthbuffer(), which determines the appropriate buffer setup in a mostly generation-independent way, brw_emit_depth_stencil_hiz(), which emits the appropriate state packets for Gen4-6, and gen7_emit_depth_stencil_hiz(), which emits the appropriate state packets for Gen7. Tested using Piglit on Gen5-7 (no regressions). v2: Re-word some comments. Fix an assertion that incorrectly prohibited packed depth/stencil formats on Gen6 (these are allowed provided that HiZ is disabled). Reviewed-by: Chad Versace <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
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