diff options
| author | Brian Paul <[email protected]> | 2009-06-18 09:26:18 -0600 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2009-06-19 12:19:33 -0600 |
| commit | e90d6a3cbfdf26b67ccb000265eb529b82c03eb4 (patch) | |
| tree | 30959b25145d1a22121f476426a3ed42e76885e5 /src/mesa | |
| parent | fd7d764514c540987549c3ea88a2d669b0f0ea58 (diff) | |
i965: initial code for loops in vertex programs
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_emit.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index a10e307f1e0..edb604b6537 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -1184,12 +1184,13 @@ post_vs_emit( struct brw_vs_compile *c, void brw_vs_emit(struct brw_vs_compile *c ) { #define MAX_IF_DEPTH 32 +#define MAX_LOOP_DEPTH 32 struct brw_compile *p = &c->func; const GLuint nr_insns = c->vp->program.Base.NumInstructions; - GLuint insn, if_depth = 0; + GLuint insn, if_depth = 0, loop_depth = 0; GLuint end_offset = 0; struct brw_instruction *end_inst, *last_inst; - struct brw_instruction *if_inst[MAX_IF_DEPTH]; + struct brw_instruction *if_inst[MAX_IF_DEPTH], *loop_inst[MAX_LOOP_DEPTH]; const struct brw_indirect stack_index = brw_indirect(0, 0); GLuint index; GLuint file; @@ -1391,6 +1392,41 @@ void brw_vs_emit(struct brw_vs_compile *c ) assert(if_depth > 0); brw_ENDIF(p, if_inst[--if_depth]); break; +#if 0 + case OPCODE_BGNLOOP: + loop_inst[loop_depth++] = brw_DO(p, BRW_EXECUTE_8); + break; + case OPCODE_BRK: + brw_BREAK(p); + brw_set_predicate_control(p, BRW_PREDICATE_NONE); + break; + case OPCODE_CONT: + brw_CONT(p); + brw_set_predicate_control(p, BRW_PREDICATE_NONE); + break; + case OPCODE_ENDLOOP: + { + struct brw_instruction *inst0, *inst1; + 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) { + inst0->bits3.if_else.jump_count = inst1 - inst0 + 1; + inst0->bits3.if_else.pop_count = 0; + } + else if (inst0->header.opcode == BRW_OPCODE_CONTINUE) { + inst0->bits3.if_else.jump_count = inst1 - inst0; + inst0->bits3.if_else.pop_count = 0; + } + } + } + break; +#else + (void) loop_inst; + (void) loop_depth; +#endif case OPCODE_BRA: brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); |