From: Eric Anholt Date: Thu, 22 Jul 2010 04:45:34 +0000 (-0700) Subject: i965: In the VS, multiply the address reg by the appropriate register size. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c686ee0fa7e2298408259f5533b739c7d05c78b8;p=mesa.git i965: In the VS, multiply the address reg by the appropriate register size. The ARL value is increments of vec4 in the register file. But PROGRAM_TEMPORARY or PROGRAM_INPUT are stored as vec4s interleaved between the two verts being executed (thus a vec8 each), compared to PROGRAM_STATE_VAR being packed vec4s. Fixes: glsl-vs-arrays-2 glsl-vs-mov-after-deref (without regressing glsl-vs-arrays-3) --- diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index f55414e1221..9c2f722c135 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -899,6 +899,7 @@ get_reladdr_constant(struct brw_vs_compile *c, struct brw_compile *p = &c->func; struct brw_reg const_reg = c->current_const[argIndex].reg; struct brw_reg addrReg = c->regs[PROGRAM_ADDRESS][0]; + struct brw_reg byte_addr_reg = get_tmp(c); assert(argIndex < 3); @@ -910,10 +911,12 @@ get_reladdr_constant(struct brw_vs_compile *c, src->Index, argIndex, c->current_const[argIndex].reg.nr); #endif + brw_MUL(p, byte_addr_reg, addrReg, brw_imm_ud(16)); + /* fetch the first vec4 */ brw_dp_READ_4_vs_relative(p, const_reg, /* writeback dest */ - addrReg, /* address register */ + byte_addr_reg, /* address register */ 16 * src->Index, /* byte offset */ SURF_INDEX_VERT_CONST_BUFFER /* binding table index */ ); @@ -962,7 +965,8 @@ static struct brw_reg get_reg( struct brw_vs_compile *c, */ static struct brw_reg deref( struct brw_vs_compile *c, struct brw_reg arg, - GLint offset) + GLint offset, + GLuint reg_size ) { struct brw_compile *p = &c->func; struct brw_reg tmp = vec4(get_tmp(c)); @@ -970,6 +974,7 @@ static struct brw_reg deref( struct brw_vs_compile *c, struct brw_reg vp_address = retype(vec1(addr_reg), BRW_REGISTER_TYPE_UW); GLuint byte_offset = arg.nr * 32 + arg.subnr + offset * 16; struct brw_reg indirect = brw_vec4_indirect(0,0); + struct brw_reg acc = retype(brw_acc_reg(), BRW_REGISTER_TYPE_D); { brw_push_insn_state(p); @@ -979,10 +984,12 @@ static struct brw_reg deref( struct brw_vs_compile *c, * fetch each 4-dword value in turn. There must be a way to do * this in a single pass, but I couldn't get it to work. */ - brw_ADD(p, brw_address_reg(0), vp_address, brw_imm_d(byte_offset)); + brw_MUL(p, acc, vp_address, brw_imm_d(reg_size)); + brw_ADD(p, brw_address_reg(0), acc, brw_imm_d(byte_offset)); brw_MOV(p, tmp, indirect); - brw_ADD(p, brw_address_reg(0), suboffset(vp_address, 8), brw_imm_d(byte_offset)); + brw_MUL(p, acc, suboffset(vp_address, 8), brw_imm_d(reg_size)); + brw_ADD(p, brw_address_reg(0), acc, brw_imm_d(byte_offset)); brw_MOV(p, suboffset(tmp, 4), indirect); brw_pop_insn_state(p); @@ -1060,7 +1067,7 @@ get_src_reg( struct brw_vs_compile *c, case PROGRAM_INPUT: case PROGRAM_OUTPUT: if (relAddr) { - return deref(c, c->regs[file][0], index); + return deref(c, c->regs[file][0], index, 32); } else { assert(c->regs[file][index].nr != 0); @@ -1082,7 +1089,7 @@ get_src_reg( struct brw_vs_compile *c, return get_constant(c, inst, argIndex); } else if (relAddr) { - return deref(c, c->regs[PROGRAM_STATE_VAR][0], index); + return deref(c, c->regs[PROGRAM_STATE_VAR][0], index, 16); } else { assert(c->regs[PROGRAM_STATE_VAR][index].nr != 0); @@ -1103,26 +1110,6 @@ get_src_reg( struct brw_vs_compile *c, } } - -static void emit_arl( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0 ) -{ - struct brw_compile *p = &c->func; - struct brw_reg tmp = dst; - GLboolean need_tmp = (dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) - tmp = get_tmp(c); - - brw_RNDD(p, tmp, arg0); /* tmp = round(arg0) */ - brw_MUL(p, dst, tmp, brw_imm_d(16)); /* dst = tmp * 16 */ - - if (need_tmp) - release_tmp(c, tmp); -} - - /** * Return the brw reg for the given instruction's src argument. * Will return mangled results for SWZ op. The emit_swz() function @@ -1633,7 +1620,7 @@ void brw_vs_emit(struct brw_vs_compile *c ) emit_math1(c, BRW_MATH_FUNCTION_EXP, dst, args[0], BRW_MATH_PRECISION_FULL); break; case OPCODE_ARL: - emit_arl(c, dst, args[0]); + brw_RNDD(p, dst, args[0]); break; case OPCODE_FLR: brw_RNDD(p, dst, args[0]);