Mesa (master): mesa/st: set compiler options based on Gallium shader caps
Luca Barbieri
lb at kemper.freedesktop.org
Tue Sep 14 04:08:48 UTC 2010
Module: Mesa
Branch: master
Commit: b37459388b22fb6a831d45bc08e51cdb7b9c610c
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b37459388b22fb6a831d45bc08e51cdb7b9c610c
Author: Luca Barbieri <luca at luca-barbieri.com>
Date: Mon Sep 6 02:31:20 2010 +0200
mesa/st: set compiler options based on Gallium shader caps
This turns on if conversion and unlimited loop unrolling if control
flow is not supported.
NOTE: this will change the behavior of r300g and any other driver
that doesn't advertise control flow
---
src/mesa/state_tracker/st_extensions.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index d637e6f..3f91eb7 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -162,7 +162,16 @@ void st_init_limits(struct st_context *st)
pc->MaxNativeAddressRegs = screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_ADDRS);
pc->MaxNativeParameters = screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_CONSTS);
+ /* TODO: make these more fine-grained if anyone needs it */
+ options->EmitNoIfs = !screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+ options->EmitNoFunctions = !screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+ options->EmitNoLoops = !screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+ options->EmitNoMainReturn = !screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH);
+
options->EmitNoCont = !screen->get_shader_param(screen, i, PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED);
+
+ if(options->EmitNoLoops)
+ options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, i, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
}
/* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
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