From d668659003d0164f0d9c805f4127ff8eb64f0624 Mon Sep 17 00:00:00 2001 From: Tom Stellard Date: Thu, 11 Nov 2010 01:01:13 -0800 Subject: [PATCH] r300/compiler: Use zero as the register index for unused sources This fixes an invalid "Too many hardware temporaries used" error in the case where a source reads from a temporary register with an index greater than max_temp_regs and then the source is marked as unused before the register allocation pass. NOTE: This is a candidate for the 7.9 branch. --- src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c | 3 +++ src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c index 8be32ea91fe..1db8678e890 100644 --- a/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c +++ b/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c @@ -76,6 +76,9 @@ static void use_temporary(struct r300_fragment_program_code *code, unsigned int static unsigned int use_source(struct r300_fragment_program_code* code, struct rc_pair_instruction_source src) { + if (!src.Used) + return 0; + if (src.File == RC_FILE_CONSTANT) { return src.Index | (1 << 5); } else if (src.File == RC_FILE_TEMPORARY) { diff --git a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c index 6f101c68eb6..0311e7cf9a2 100644 --- a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c +++ b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c @@ -200,6 +200,9 @@ static void use_temporary(struct r500_fragment_program_code* code, unsigned int static unsigned int use_source(struct r500_fragment_program_code* code, struct rc_pair_instruction_source src) { + if (!src.Used) + return 0; + if (src.File == RC_FILE_CONSTANT) { return src.Index | 0x100; } else if (src.File == RC_FILE_TEMPORARY) { -- 2.30.2