r300/compiler: Fix R300 fragment program regression introduced by 0723cd1...

We obviously need to move the code addr register backwards because their may
be overlap.

This bug affected in particular the Compiz water plugin.

Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>

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 305dc074ee8c4896bee6e9d2e4c9d69ba61ab3b8..c7227bbd15b881bec9bc014c5735f040528187a8 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c
+++ b/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c
@@ -352,7 +352,7 @@ void r300BuildFragmentProgramHwCode(struct r300_fragment_program_compiler *compi
        if (emit.current_node < 3) {
                int shift = 3 - emit.current_node;
                int i;
-               for(i = 0; i <= emit.current_node; ++i)
+               for(i = emit.current_node; i >= 0; --i)
                        code->code_addr[shift + i] = code->code_addr[i];
                for(i = 0; i < shift; ++i)
                        code->code_addr[i] = 0;