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i965: Add support for loops in the VS.

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This follows the changes done for the FS alongside the EU emit code.
This commit is contained in:
Eric Anholt
2010-12-01 15:37:10 -08:00
parent 251d15d888
commit f361f8a8a9
1 changed files with 30 additions and 22 deletions
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src/mesa/drivers/dri/i965/brw_vs_emit.c
+30 -22
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@@ -2032,35 +2032,42 @@ void brw_vs_emit(struct brw_vs_compile *c )
break;
case OPCODE_CONT:
brw_set_predicate_control(p, get_predicate(inst));
brw_CONT(p, if_depth_in_loop[loop_depth]);
if (intel->gen >= 6) {
brw_CONT_gen6(p, loop_inst[loop_depth - 1]);
} else {
brw_CONT(p, if_depth_in_loop[loop_depth]);
}
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
break;
case OPCODE_ENDLOOP:
{
clear_current_const(c);
struct brw_instruction *inst0, *inst1;
GLuint br = 1;
loop_depth--;
case OPCODE_ENDLOOP: {
clear_current_const(c);
struct brw_instruction *inst0, *inst1;
GLuint br = 1;
if (intel->gen == 5)
br = 2;
loop_depth--;
inst0 = inst1 = brw_WHILE(p, loop_inst[loop_depth]);
/* patch all the BREAK/CONT instructions from last BEGINLOOP */
while (inst0 > loop_inst[loop_depth]) {
inst0--;
if (inst0->header.opcode == BRW_OPCODE_BREAK &&
if (intel->gen == 5)
br = 2;
inst0 = inst1 = brw_WHILE(p, loop_inst[loop_depth]);
if (intel->gen < 6) {
/* patch all the BREAK/CONT instructions from last BEGINLOOP */
while (inst0 > loop_inst[loop_depth]) {
inst0--;
if (inst0->header.opcode == BRW_OPCODE_BREAK &&
inst0->bits3.if_else.jump_count == 0) {
inst0->bits3.if_else.jump_count = br * (inst1 - inst0 + 1);
}
else if (inst0->header.opcode == BRW_OPCODE_CONTINUE &&
inst0->bits3.if_else.jump_count == 0) {
inst0->bits3.if_else.jump_count = br * (inst1 - inst0);
}
}
}
inst0->bits3.if_else.jump_count = br * (inst1 - inst0 + 1);
} else if (inst0->header.opcode == BRW_OPCODE_CONTINUE &&
inst0->bits3.if_else.jump_count == 0) {
inst0->bits3.if_else.jump_count = br * (inst1 - inst0);
}
}
}
}
break;
case OPCODE_BRA:
brw_set_predicate_control(p, get_predicate(inst));
brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));
@@ -2151,6 +2158,7 @@ void brw_vs_emit(struct brw_vs_compile *c )
}
brw_resolve_cals(p);
brw_set_uip_jip(p);
brw_optimize(p);