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mesa: change MAX_PROGRAM_ADDRESS_REGS to 1, clamp to it in state tracker

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We've never properly supported more than one address register.  There
isn't even a field in prog_src_register or prog_dst_register to indicate
which address register to use if RelAddr!=0.

In the state tracker, clamp MaxAddressRegs against MAX_PROGRAM_ADDRESS_REGS
since many gallium drivers do support more.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65226

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul
2013-06-04 09:51:15 -07:00
parent 2fd785d126
commit f270baf074
2 changed files with 3 additions and 2 deletions
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3
src/mesa/state_tracker/st_extensions.c
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@@ -187,7 +187,8 @@ void st_init_limits(struct st_context *st)
pc->MaxTemps = pc->MaxNativeTemps =
screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_TEMPS);
pc->MaxAddressRegs = pc->MaxNativeAddressRegs =
screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS);
_min(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_ADDRS),
MAX_PROGRAM_ADDRESS_REGS);
pc->MaxParameters = pc->MaxNativeParameters =
screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_CONSTS);