diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_vs_emit.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_emit.c | 282 |
1 files changed, 219 insertions, 63 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index 6eb11b19ad..8759826e83 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -30,8 +30,8 @@ */ -#include "program.h" -#include "macros.h" +#include "main/macros.h" +#include "shader/program.h" #include "shader/prog_parameter.h" #include "shader/prog_print.h" #include "brw_context.h" @@ -134,6 +134,16 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) WRITEMASK_X); reg++; } + + for (i = 0; i < 128; i++) { + if (c->output_regs[i].used_in_src) { + c->output_regs[i].reg = brw_vec8_grf(reg, 0); + reg++; + } + } + + c->stack = brw_uw16_reg(BRW_GENERAL_REGISTER_FILE, reg, 0); + reg += 2; /* Some opcodes need an internal temporary: @@ -201,7 +211,7 @@ static void unalias2( struct brw_vs_compile *c, struct brw_reg, struct brw_reg )) { - if ((dst.file == arg0.file && dst.nr == arg0.nr) && + if ((dst.file == arg0.file && dst.nr == arg0.nr) || (dst.file == arg1.file && dst.nr == arg1.nr)) { struct brw_compile *p = &c->func; struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask); @@ -213,57 +223,65 @@ static void unalias2( struct brw_vs_compile *c, } } +static void emit_sop( struct brw_compile *p, + struct brw_reg dst, + struct brw_reg arg0, + struct brw_reg arg1, + GLuint cond) +{ + brw_MOV(p, dst, brw_imm_f(0.0f)); + brw_CMP(p, brw_null_reg(), cond, arg0, arg1); + brw_MOV(p, dst, brw_imm_f(1.0f)); + brw_set_predicate_control_flag_value(p, 0xff); +} +static void emit_seq( struct brw_compile *p, + struct brw_reg dst, + struct brw_reg arg0, + struct brw_reg arg1 ) +{ + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_EQ); +} - +static void emit_sne( struct brw_compile *p, + struct brw_reg dst, + struct brw_reg arg0, + struct brw_reg arg1 ) +{ + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_NEQ); +} static void emit_slt( struct brw_compile *p, struct brw_reg dst, struct brw_reg arg0, struct brw_reg arg1 ) { - /* Could be done with an if/else/endif, but this method uses half - * the instructions. Note that we are careful to reference the - * arguments before writing the dest. That means we emit the - * instructions in an odd order and have to play with the flag - * values. - */ - brw_push_insn_state(p); - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0, arg1); - - /* Write all values to 1: - */ - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - brw_MOV(p, dst, brw_imm_f(1.0)); + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_L); +} - /* Where the test succeeded, overwite with zero: - */ - brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); - brw_MOV(p, dst, brw_imm_f(0.0)); - brw_pop_insn_state(p); +static void emit_sle( struct brw_compile *p, + struct brw_reg dst, + struct brw_reg arg0, + struct brw_reg arg1 ) +{ + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_LE); } +static void emit_sgt( struct brw_compile *p, + struct brw_reg dst, + struct brw_reg arg0, + struct brw_reg arg1 ) +{ + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_G); +} static void emit_sge( struct brw_compile *p, struct brw_reg dst, struct brw_reg arg0, struct brw_reg arg1 ) { - brw_push_insn_state(p); - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0, arg1); - - /* Write all values to zero: - */ - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - brw_MOV(p, dst, brw_imm_f(0)); - - /* Where the test succeeded, overwite with 1: - */ - brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); - brw_MOV(p, dst, brw_imm_f(1.0)); - brw_pop_insn_state(p); + emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_GE); } - static void emit_max( struct brw_compile *p, struct brw_reg dst, struct brw_reg arg0, @@ -592,9 +610,13 @@ static struct brw_reg get_reg( struct brw_vs_compile *c, case PROGRAM_TEMPORARY: case PROGRAM_INPUT: case PROGRAM_OUTPUT: - case PROGRAM_STATE_VAR: assert(c->regs[file][index].nr != 0); return c->regs[file][index]; + case PROGRAM_STATE_VAR: + case PROGRAM_CONSTANT: + case PROGRAM_UNIFORM: + assert(c->regs[PROGRAM_STATE_VAR][index].nr != 0); + return c->regs[PROGRAM_STATE_VAR][index]; case PROGRAM_ADDRESS: assert(index == 0); return c->regs[file][index]; @@ -668,28 +690,28 @@ static void emit_arl( struct brw_vs_compile *c, * account. */ static struct brw_reg get_arg( struct brw_vs_compile *c, - struct prog_src_register src ) + struct prog_src_register *src ) { struct brw_reg reg; - if (src.File == PROGRAM_UNDEFINED) + if (src->File == PROGRAM_UNDEFINED) return brw_null_reg(); - if (src.RelAddr) - reg = deref(c, c->regs[PROGRAM_STATE_VAR][0], src.Index); + if (src->RelAddr) + reg = deref(c, c->regs[PROGRAM_STATE_VAR][0], src->Index); else - reg = get_reg(c, src.File, src.Index); + reg = get_reg(c, src->File, src->Index); /* Convert 3-bit swizzle to 2-bit. */ - reg.dw1.bits.swizzle = BRW_SWIZZLE4(GET_SWZ(src.Swizzle, 0), - GET_SWZ(src.Swizzle, 1), - GET_SWZ(src.Swizzle, 2), - GET_SWZ(src.Swizzle, 3)); + reg.dw1.bits.swizzle = BRW_SWIZZLE4(GET_SWZ(src->Swizzle, 0), + GET_SWZ(src->Swizzle, 1), + GET_SWZ(src->Swizzle, 2), + GET_SWZ(src->Swizzle, 3)); /* Note this is ok for non-swizzle instructions: */ - reg.negate = src.NegateBase ? 1 : 0; + reg.negate = src->NegateBase ? 1 : 0; return reg; } @@ -845,7 +867,7 @@ static void emit_vertex_write( struct brw_vs_compile *c) * Later, clipping will detect ucp[6] and ensure the primitive is * clipped against all fixed planes. */ - if (!c->key.know_w_is_one) { + if (!(BRW_IS_GM45(p->brw) || BRW_IS_G4X(p->brw)) && !c->key.know_w_is_one) { brw_CMP(p, vec8(brw_null_reg()), BRW_CONDITIONAL_L, @@ -891,17 +913,50 @@ static void emit_vertex_write( struct brw_vs_compile *c) } - - +static void +post_vs_emit( struct brw_vs_compile *c, struct brw_instruction *end_inst ) +{ + GLuint nr_insns = c->vp->program.Base.NumInstructions; + GLuint insn, target_insn; + struct prog_instruction *inst1, *inst2; + struct brw_instruction *brw_inst1, *brw_inst2; + int offset; + for (insn = 0; insn < nr_insns; insn++) { + inst1 = &c->vp->program.Base.Instructions[insn]; + brw_inst1 = inst1->Data; + switch (inst1->Opcode) { + case OPCODE_CAL: + case OPCODE_BRA: + target_insn = inst1->BranchTarget; + inst2 = &c->vp->program.Base.Instructions[target_insn]; + brw_inst2 = inst2->Data; + offset = brw_inst2 - brw_inst1; + brw_set_src1(brw_inst1, brw_imm_d(offset*16)); + break; + case OPCODE_END: + offset = end_inst - brw_inst1; + brw_set_src1(brw_inst1, brw_imm_d(offset*16)); + break; + default: + break; + } + } +} /* Emit the fragment program instructions here. */ -void brw_vs_emit( struct brw_vs_compile *c ) +void brw_vs_emit(struct brw_vs_compile *c ) { +#define MAX_IFSN 32 struct brw_compile *p = &c->func; GLuint nr_insns = c->vp->program.Base.NumInstructions; - GLuint insn; + GLuint insn, if_insn = 0; + struct brw_instruction *end_inst; + struct brw_instruction *if_inst[MAX_IFSN]; + struct brw_indirect stack_index = brw_indirect(0, 0); + GLuint index; + GLuint file; if (INTEL_DEBUG & DEBUG_VS) { _mesa_printf("\n\n\nvs-emit:\n"); @@ -912,9 +967,24 @@ void brw_vs_emit( struct brw_vs_compile *c ) brw_set_compression_control(p, BRW_COMPRESSION_NONE); brw_set_access_mode(p, BRW_ALIGN_16); + /* Message registers can't be read, so copy the output into GRF register + if they are used in source registers */ + for (insn = 0; insn < nr_insns; insn++) { + GLuint i; + struct prog_instruction *inst = &c->vp->program.Base.Instructions[insn]; + for (i = 0; i < 3; i++) { + struct prog_src_register *src = &inst->SrcReg[i]; + GLuint index = src->Index; + GLuint file = src->File; + if (file == PROGRAM_OUTPUT && index != VERT_RESULT_HPOS) + c->output_regs[index].used_in_src = GL_TRUE; + } + } + /* Static register allocation */ brw_vs_alloc_regs(c); + brw_MOV(p, get_addr_reg(stack_index), brw_address(c->stack)); for (insn = 0; insn < nr_insns; insn++) { @@ -924,17 +994,29 @@ void brw_vs_emit( struct brw_vs_compile *c ) /* Get argument regs. SWZ is special and does this itself. */ + inst->Data = &p->store[p->nr_insn]; if (inst->Opcode != OPCODE_SWZ) - for (i = 0; i < 3; i++) - args[i] = get_arg(c, inst->SrcReg[i]); + for (i = 0; i < 3; i++) { + struct prog_src_register *src = &inst->SrcReg[i]; + index = src->Index; + file = src->File; + if (file == PROGRAM_OUTPUT&&c->output_regs[index].used_in_src) + args[i] = c->output_regs[index].reg; + else + args[i] = get_arg(c, src); + } /* Get dest regs. Note that it is possible for a reg to be both * dst and arg, given the static allocation of registers. So * care needs to be taken emitting multi-operation instructions. - */ - dst = get_dst(c, inst->DstReg); + */ + index = inst->DstReg.Index; + file = inst->DstReg.File; + if (file == PROGRAM_OUTPUT && c->output_regs[index].used_in_src) + dst = c->output_regs[index].reg; + else + dst = get_dst(c, inst->DstReg); - switch (inst->Opcode) { case OPCODE_ABS: brw_MOV(p, dst, brw_abs(args[0])); @@ -1003,12 +1085,25 @@ void brw_vs_emit( struct brw_vs_compile *c ) case OPCODE_RSQ: emit_math1(c, BRW_MATH_FUNCTION_RSQ, dst, args[0], BRW_MATH_PRECISION_FULL); break; + + case OPCODE_SEQ: + emit_seq(p, dst, args[0], args[1]); + break; + case OPCODE_SNE: + emit_sne(p, dst, args[0], args[1]); + break; case OPCODE_SGE: emit_sge(p, dst, args[0], args[1]); break; + case OPCODE_SGT: + emit_sgt(p, dst, args[0], args[1]); + break; case OPCODE_SLT: emit_slt(p, dst, args[0], args[1]); break; + case OPCODE_SLE: + emit_sle(p, dst, args[0], args[1]); + break; case OPCODE_SUB: brw_ADD(p, dst, args[0], negate(args[1])); break; @@ -1021,21 +1116,82 @@ void brw_vs_emit( struct brw_vs_compile *c ) case OPCODE_XPD: emit_xpd(p, dst, args[0], args[1]); break; + case OPCODE_IF: + assert(if_insn < MAX_IFSN); + if_inst[if_insn++] = brw_IF(p, BRW_EXECUTE_8); + break; + case OPCODE_ELSE: + if_inst[if_insn-1] = brw_ELSE(p, if_inst[if_insn-1]); + break; + case OPCODE_ENDIF: + assert(if_insn > 0); + brw_ENDIF(p, if_inst[--if_insn]); + break; + 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)); + brw_set_predicate_control_flag_value(p, 0xff); + break; + case OPCODE_CAL: + brw_set_access_mode(p, BRW_ALIGN_1); + brw_ADD(p, deref_1d(stack_index, 0), brw_ip_reg(), brw_imm_d(3*16)); + brw_set_access_mode(p, BRW_ALIGN_16); + brw_ADD(p, get_addr_reg(stack_index), + get_addr_reg(stack_index), brw_imm_d(4)); + inst->Data = &p->store[p->nr_insn]; + brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); + break; + case OPCODE_RET: + brw_ADD(p, get_addr_reg(stack_index), + get_addr_reg(stack_index), brw_imm_d(-4)); + brw_set_access_mode(p, BRW_ALIGN_1); + brw_MOV(p, brw_ip_reg(), deref_1d(stack_index, 0)); + brw_set_access_mode(p, BRW_ALIGN_16); case OPCODE_END: + brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); + break; case OPCODE_PRINT: + case OPCODE_BGNSUB: + case OPCODE_ENDSUB: break; default: + _mesa_printf("Unsupport opcode %d in vertex shader\n", inst->Opcode); break; } + if ((inst->DstReg.File == PROGRAM_OUTPUT) + && (inst->DstReg.Index != VERT_RESULT_HPOS) + && c->output_regs[inst->DstReg.Index].used_in_src) { + brw_MOV(p, get_dst(c, inst->DstReg), dst); + } + + /* Result color clamping. + * + * When destination register is an output register and + * it's primary/secondary front/back color, we have to clamp + * the result to [0,1]. This is done by enabling the + * saturation bit for the last instruction. + * + * We don't use brw_set_saturate() as it modifies + * p->current->header.saturate, which affects all the subsequent + * instructions. Instead, we directly modify the header + * of the last (already stored) instruction. + */ + if (inst->DstReg.File == PROGRAM_OUTPUT) { + if ((inst->DstReg.Index == VERT_RESULT_COL0) + || (inst->DstReg.Index == VERT_RESULT_COL1) + || (inst->DstReg.Index == VERT_RESULT_BFC0) + || (inst->DstReg.Index == VERT_RESULT_BFC1)) { + p->store[p->nr_insn-1].header.saturate = 1; + } + } + release_tmps(c); } + end_inst = &p->store[p->nr_insn]; emit_vertex_write(c); - + post_vs_emit(c, end_inst); + for (insn = 0; insn < nr_insns; insn++) + c->vp->program.Base.Instructions[insn].Data = NULL; } - - - - - |