diff options
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c index 276f4cb6b67..d5b08dd9592 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c @@ -146,7 +146,8 @@ static unsigned long t_src(struct r300_vertex_program_code *vp, t_swizzle(GET_SWZ(src->Swizzle, 2)), t_swizzle(GET_SWZ(src->Swizzle, 3)), t_src_class(src->File), - src->Negate) | (src->RelAddr << 4); + src->Negate) | + (src->RelAddr << 4) | (src->Abs << 3); } static unsigned long t_src_scalar(struct r300_vertex_program_code *vp, @@ -162,7 +163,7 @@ static unsigned long t_src_scalar(struct r300_vertex_program_code *vp, t_swizzle(GET_SWZ(src->Swizzle, 0)), t_src_class(src->File), src->Negate ? RC_MASK_XYZW : RC_MASK_NONE) | - (src->RelAddr << 4); + (src->RelAddr << 4) | (src->Abs << 3); } static int valid_dst(struct r300_vertex_program_code *vp, @@ -487,6 +488,44 @@ static void allocate_temporary_registers(struct r300_vertex_program_compiler * c } } +/** + * R3xx-R4xx vertex engine does not support the Absolute source operand modifier + * and the Saturate opcode modifier. Only Absolute is currently transformed. + */ +static int transform_nonnative_modifiers( + struct radeon_compiler *c, + struct rc_instruction *inst, + void* unused) +{ + const struct rc_opcode_info *opcode = rc_get_opcode_info(inst->U.I.Opcode); + unsigned i; + + /* Transform ABS(a) to MAX(a, -a). */ + for (i = 0; i < opcode->NumSrcRegs; i++) { + if (inst->U.I.SrcReg[i].Abs) { + struct rc_instruction *new_inst; + unsigned temp; + + inst->U.I.SrcReg[i].Abs = 0; + + temp = rc_find_free_temporary(c); + + new_inst = rc_insert_new_instruction(c, inst->Prev); + new_inst->U.I.Opcode = RC_OPCODE_MAX; + new_inst->U.I.DstReg.File = RC_FILE_TEMPORARY; + new_inst->U.I.DstReg.Index = temp; + new_inst->U.I.SrcReg[0] = inst->U.I.SrcReg[i]; + new_inst->U.I.SrcReg[1] = inst->U.I.SrcReg[i]; + new_inst->U.I.SrcReg[1].Negate ^= RC_MASK_XYZW; + + inst->U.I.SrcReg[i].File = RC_FILE_TEMPORARY; + inst->U.I.SrcReg[i].Index = temp; + inst->U.I.SrcReg[i].Negate = 0; + inst->U.I.SrcReg[i].RelAddr = 0; + } + } + return 1; +} /** * Vertex engine cannot read two inputs or two constants at the same time. @@ -625,15 +664,27 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* compiler) { &r300_transform_trig_scale_vertex, 0 } }; radeonLocalTransform(&compiler->Base, 2, transformations); + + debug_program_log(compiler, "after native rewrite"); } else { struct radeon_program_transformation transformations[] = { { &r300_transform_vertex_alu, 0 }, { &radeonTransformTrigSimple, 0 } }; radeonLocalTransform(&compiler->Base, 2, transformations); - } - debug_program_log(compiler, "after native rewrite"); + debug_program_log(compiler, "after native rewrite"); + + /* Note: This pass has to be done seperately from ALU rewrite, + * because it needs to check every instruction. + */ + struct radeon_program_transformation transformations2[] = { + { &transform_nonnative_modifiers, 0 }, + }; + radeonLocalTransform(&compiler->Base, 1, transformations2); + + debug_program_log(compiler, "after emulate modifiers"); + } { /* Note: This pass has to be done seperately from ALU rewrite, |