diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_emit.c | 53 |
1 files changed, 38 insertions, 15 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index 584fdbdfc3..1638ef8111 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -1270,9 +1270,27 @@ post_vs_emit( struct brw_vs_compile *c, } static uint32_t -get_predicate(uint32_t swizzle) +get_predicate(const struct prog_instruction *inst) { - switch (swizzle) { + if (inst->DstReg.CondMask == COND_TR) + return BRW_PREDICATE_NONE; + + /* All of GLSL only produces predicates for COND_NE and one channel per + * vector. Fail badly if someone starts doing something else, as it might + * mean infinite looping or something. + * + * We'd like to support all the condition codes, but our hardware doesn't + * quite match the Mesa IR, which is modeled after the NV extensions. For + * those, the instruction may update the condition codes or not, then any + * later instruction may use one of those condition codes. For gen4, the + * instruction may update the flags register based on one of the condition + * codes output by the instruction, and then further instructions may + * predicate on that. We can probably support this, but it won't + * necessarily be easy. + */ + assert(inst->DstReg.CondMask == COND_NE); + + switch (inst->DstReg.CondSwizzle) { case SWIZZLE_XXXX: return BRW_PREDICATE_ALIGN16_REPLICATE_X; case SWIZZLE_YYYY: @@ -1282,7 +1300,8 @@ get_predicate(uint32_t swizzle) case SWIZZLE_WWWW: return BRW_PREDICATE_ALIGN16_REPLICATE_W; default: - _mesa_problem(NULL, "Unexpected predicate: 0x%08x\n", swizzle); + _mesa_problem(NULL, "Unexpected predicate: 0x%08x\n", + inst->DstReg.CondMask); return BRW_PREDICATE_NORMAL; } } @@ -1294,6 +1313,7 @@ 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; + struct brw_context *brw = p->brw; const GLuint nr_insns = c->vp->program.Base.NumInstructions; GLuint insn, if_depth = 0, loop_depth = 0; GLuint end_offset = 0; @@ -1492,8 +1512,8 @@ void brw_vs_emit(struct brw_vs_compile *c ) case OPCODE_IF: assert(if_depth < MAX_IF_DEPTH); if_inst[if_depth] = brw_IF(p, BRW_EXECUTE_8); - if_inst[if_depth]->header.predicate_control = - get_predicate(inst->DstReg.CondSwizzle); + /* Note that brw_IF smashes the predicate_control field. */ + if_inst[if_depth]->header.predicate_control = get_predicate(inst); if_depth++; break; case OPCODE_ELSE: @@ -1503,45 +1523,48 @@ 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_set_predicate_control(p, get_predicate(inst)); brw_BREAK(p); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); + brw_set_predicate_control(p, BRW_PREDICATE_NONE); break; case OPCODE_CONT: + brw_set_predicate_control(p, get_predicate(inst)); brw_CONT(p); brw_set_predicate_control(p, BRW_PREDICATE_NONE); break; case OPCODE_ENDLOOP: { struct brw_instruction *inst0, *inst1; + GLuint br = 1; + loop_depth--; + + if (BRW_IS_IGDNG(brw)) + br = 2; + 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.jump_count = br * (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.jump_count = br * (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_set_predicate_control(p, get_predicate(inst)); brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); - brw_set_predicate_control_flag_value(p, 0xff); + brw_set_predicate_control(p, BRW_PREDICATE_NONE); break; case OPCODE_CAL: brw_set_access_mode(p, BRW_ALIGN_1); |