diff options
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c | 81 |
1 files changed, 44 insertions, 37 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c index f9d9f34b6a..a58ef06b86 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c @@ -137,6 +137,13 @@ int radeonTransformTEX( (compiler->state.unit[inst->U.I.TexSrcUnit].compare_mode_enabled))) { rc_compare_func comparefunc = compiler->state.unit[inst->U.I.TexSrcUnit].texture_compare_func; + /* Fake EQUAL/NOTEQUAL, they are equal to NEVER/ALWAYS due to precision issues anyway. */ + if (comparefunc == RC_COMPARE_FUNC_EQUAL) { + comparefunc = RC_COMPARE_FUNC_NEVER; + } else if (comparefunc == RC_COMPARE_FUNC_NOTEQUAL) { + comparefunc = RC_COMPARE_FUNC_ALWAYS; + } + if (comparefunc == RC_COMPARE_FUNC_NEVER || comparefunc == RC_COMPARE_FUNC_ALWAYS) { inst->U.I.Opcode = RC_OPCODE_MOV; @@ -149,14 +156,11 @@ int radeonTransformTEX( return 1; } else { - rc_compare_func comparefunc = compiler->state.unit[inst->U.I.TexSrcUnit].texture_compare_func; struct rc_instruction * inst_rcp = NULL; - struct rc_instruction * inst_mad; - struct rc_instruction * inst_cmp; + struct rc_instruction *inst_mul, *inst_cmp, *inst_add; unsigned tmp_texsample; unsigned tmp_sum; - unsigned tmp_recip_w = 0; - int pass, fail, tex; + int pass, fail; /* Save the output register. */ struct rc_dst_register output_reg = inst->U.I.DstReg; @@ -167,49 +171,49 @@ int radeonTransformTEX( inst->U.I.DstReg.Index = tmp_texsample; inst->U.I.DstReg.WriteMask = RC_MASK_XYZW; - if (inst->U.I.Opcode == RC_OPCODE_TXP) { - tmp_recip_w = rc_find_free_temporary(c); + tmp_sum = rc_find_free_temporary(c); + if (inst->U.I.Opcode == RC_OPCODE_TXP) { /* Compute 1/W. */ inst_rcp = rc_insert_new_instruction(c, inst); inst_rcp->U.I.Opcode = RC_OPCODE_RCP; inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY; - inst_rcp->U.I.DstReg.Index = tmp_recip_w; + inst_rcp->U.I.DstReg.Index = tmp_sum; inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W; inst_rcp->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; inst_rcp->U.I.SrcReg[0].Swizzle = RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 3)); } - /* Perspective-divide Z by W (if it's TXP) and add the texture sample (see below). */ - tmp_sum = rc_find_free_temporary(c); - inst_mad = rc_insert_new_instruction(c, inst_rcp ? inst_rcp : inst); - inst_mad->U.I.DstReg.File = RC_FILE_TEMPORARY; - inst_mad->U.I.DstReg.Index = tmp_sum; - inst_mad->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; - inst_mad->U.I.SrcReg[0].Swizzle = + /* Divide Z by W (if it's TXP) and saturate. */ + inst_mul = rc_insert_new_instruction(c, inst_rcp ? inst_rcp : inst); + inst_mul->U.I.Opcode = inst->U.I.Opcode == RC_OPCODE_TXP ? RC_OPCODE_MUL : RC_OPCODE_MOV; + inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY; + inst_mul->U.I.DstReg.Index = tmp_sum; + inst_mul->U.I.DstReg.WriteMask = RC_MASK_W; + inst_mul->U.I.SaturateMode = RC_SATURATE_ZERO_ONE; + inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; + inst_mul->U.I.SrcReg[0].Swizzle = RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 2)); if (inst->U.I.Opcode == RC_OPCODE_TXP) { - inst_mad->U.I.Opcode = RC_OPCODE_MAD; - inst_mad->U.I.SrcReg[1].File = RC_FILE_TEMPORARY; - inst_mad->U.I.SrcReg[1].Index = tmp_recip_w; - inst_mad->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW; - tex = 2; - } else { - inst_mad->U.I.Opcode = RC_OPCODE_ADD; - tex = 1; - } - inst_mad->U.I.SrcReg[tex].File = RC_FILE_TEMPORARY; - inst_mad->U.I.SrcReg[tex].Index = tmp_texsample; - inst_mad->U.I.SrcReg[tex].Swizzle = compiler->state.unit[inst->U.I.TexSrcUnit].depth_texture_swizzle; - - /* Fake EQUAL/NOTEQUAL, it seems to pass some tests suprisingly. */ - if (comparefunc == RC_COMPARE_FUNC_EQUAL) { - comparefunc = RC_COMPARE_FUNC_GEQUAL; - } else if (comparefunc == RC_COMPARE_FUNC_NOTEQUAL) { - comparefunc = RC_COMPARE_FUNC_LESS; + inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY; + inst_mul->U.I.SrcReg[1].Index = tmp_sum; + inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW; } + /* Add the depth texture value. */ + inst_add = rc_insert_new_instruction(c, inst_mul); + inst_add->U.I.Opcode = RC_OPCODE_ADD; + inst_add->U.I.DstReg.File = RC_FILE_TEMPORARY; + inst_add->U.I.DstReg.Index = tmp_sum; + inst_add->U.I.DstReg.WriteMask = RC_MASK_W; + inst_add->U.I.SrcReg[0].File = RC_FILE_TEMPORARY; + inst_add->U.I.SrcReg[0].Index = tmp_sum; + inst_add->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_WWWW; + inst_add->U.I.SrcReg[1].File = RC_FILE_TEMPORARY; + inst_add->U.I.SrcReg[1].Index = tmp_texsample; + inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW; + /* Recall that SrcReg[0] is r, SrcReg[tex] is tex and: * LESS: r < tex <=> -tex+r < 0 * GEQUAL: r >= tex <=> not (-tex+r < 0) @@ -218,9 +222,9 @@ int radeonTransformTEX( * * This negates either r or tex: */ if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GEQUAL) - inst_mad->U.I.SrcReg[tex].Negate = inst_mad->U.I.SrcReg[tex].Negate ^ RC_MASK_XYZW; + inst_add->U.I.SrcReg[1].Negate = inst_add->U.I.SrcReg[1].Negate ^ RC_MASK_XYZW; else - inst_mad->U.I.SrcReg[0].Negate = inst_mad->U.I.SrcReg[0].Negate ^ RC_MASK_XYZW; + inst_add->U.I.SrcReg[0].Negate = inst_add->U.I.SrcReg[0].Negate ^ RC_MASK_XYZW; /* This negates the whole expresion: */ if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GREATER) { @@ -231,16 +235,19 @@ int radeonTransformTEX( fail = 1; } - inst_cmp = rc_insert_new_instruction(c, inst_mad); + inst_cmp = rc_insert_new_instruction(c, inst_add); inst_cmp->U.I.Opcode = RC_OPCODE_CMP; inst_cmp->U.I.DstReg = output_reg; inst_cmp->U.I.SrcReg[0].File = RC_FILE_TEMPORARY; inst_cmp->U.I.SrcReg[0].Index = tmp_sum; + inst_cmp->U.I.SrcReg[0].Swizzle = + combine_swizzles(RC_SWIZZLE_WWWW, + compiler->state.unit[inst->U.I.TexSrcUnit].depth_texture_swizzle); inst_cmp->U.I.SrcReg[pass].File = RC_FILE_NONE; inst_cmp->U.I.SrcReg[pass].Swizzle = RC_SWIZZLE_1111; inst_cmp->U.I.SrcReg[fail] = shadow_ambient(compiler, inst->U.I.TexSrcUnit); - assert(tmp_texsample != tmp_sum && tmp_sum != tmp_recip_w); + assert(tmp_texsample != tmp_sum); } } |