1 /* 2 Copyright (C) Intel Corp. 2006. All Rights Reserved. 3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to 4 develop this 3D driver. 5 6 Permission is hereby granted, free of charge, to any person obtaining 7 a copy of this software and associated documentation files (the 8 "Software"), to deal in the Software without restriction, including 9 without limitation the rights to use, copy, modify, merge, publish, 10 distribute, sublicense, and/or sell copies of the Software, and to 11 permit persons to whom the Software is furnished to do so, subject to 12 the following conditions: 13 14 The above copyright notice and this permission notice (including the 15 next paragraph) shall be included in all copies or substantial 16 portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 26 **********************************************************************/ 27 /* 28 * Authors: 29 * Keith Whitwell <keith (at) tungstengraphics.com> 30 */ 31 32 33 #include "main/mtypes.h" 34 #include "brw_wm.h" 35 36 37 #undef P /* prompted depth */ 38 #undef C /* computed */ 39 #undef N /* non-promoted? */ 40 41 #define P 0 42 #define C 1 43 #define N 2 44 45 const struct { 46 GLuint mode:2; 47 GLuint sd_present:1; 48 GLuint sd_to_rt:1; 49 GLuint dd_present:1; 50 GLuint ds_present:1; 51 } wm_iz_table[IZ_BIT_MAX] = 52 { 53 { P, 0, 0, 0, 0 }, 54 { P, 0, 0, 0, 0 }, 55 { P, 0, 0, 0, 0 }, 56 { P, 0, 0, 0, 0 }, 57 { P, 0, 0, 0, 0 }, 58 { N, 1, 1, 0, 0 }, 59 { N, 0, 1, 0, 0 }, 60 { N, 0, 1, 0, 0 }, 61 { P, 0, 0, 0, 0 }, 62 { P, 0, 0, 0, 0 }, 63 { C, 0, 1, 1, 0 }, 64 { C, 0, 1, 1, 0 }, 65 { P, 0, 0, 0, 0 }, 66 { N, 1, 1, 0, 0 }, 67 { C, 0, 1, 1, 0 }, 68 { C, 0, 1, 1, 0 }, 69 { P, 0, 0, 0, 0 }, 70 { P, 0, 0, 0, 0 }, 71 { P, 0, 0, 0, 0 }, 72 { P, 0, 0, 0, 0 }, 73 { P, 0, 0, 0, 0 }, 74 { N, 1, 1, 0, 0 }, 75 { N, 0, 1, 0, 0 }, 76 { N, 0, 1, 0, 0 }, 77 { P, 0, 0, 0, 0 }, 78 { P, 0, 0, 0, 0 }, 79 { C, 0, 1, 1, 0 }, 80 { C, 0, 1, 1, 0 }, 81 { P, 0, 0, 0, 0 }, 82 { N, 1, 1, 0, 0 }, 83 { C, 0, 1, 1, 0 }, 84 { C, 0, 1, 1, 0 }, 85 { P, 0, 0, 0, 0 }, 86 { P, 0, 0, 0, 0 }, 87 { P, 0, 0, 0, 0 }, 88 { P, 0, 0, 0, 0 }, 89 { P, 0, 0, 0, 0 }, 90 { N, 1, 1, 0, 1 }, 91 { N, 0, 1, 0, 1 }, 92 { N, 0, 1, 0, 1 }, 93 { P, 0, 0, 0, 0 }, 94 { P, 0, 0, 0, 0 }, 95 { C, 0, 1, 1, 1 }, 96 { C, 0, 1, 1, 1 }, 97 { P, 0, 0, 0, 0 }, 98 { N, 1, 1, 0, 1 }, 99 { C, 0, 1, 1, 1 }, 100 { C, 0, 1, 1, 1 }, 101 { P, 0, 0, 0, 0 }, 102 { C, 0, 0, 0, 1 }, 103 { P, 0, 0, 0, 0 }, 104 { C, 0, 1, 0, 1 }, 105 { P, 0, 0, 0, 0 }, 106 { C, 1, 1, 0, 1 }, 107 { C, 0, 1, 0, 1 }, 108 { C, 0, 1, 0, 1 }, 109 { P, 0, 0, 0, 0 }, 110 { C, 1, 1, 1, 1 }, 111 { C, 0, 1, 1, 1 }, 112 { C, 0, 1, 1, 1 }, 113 { P, 0, 0, 0, 0 }, 114 { C, 1, 1, 1, 1 }, 115 { C, 0, 1, 1, 1 }, 116 { C, 0, 1, 1, 1 } 117 }; 118 119 /** 120 * \param line_aa AA_NEVER, AA_ALWAYS or AA_SOMETIMES 121 * \param lookup bitmask of IZ_* flags 122 */ 123 void brw_wm_lookup_iz(struct intel_context *intel, 124 struct brw_wm_compile *c) 125 { 126 GLuint reg = 2; 127 bool kill_stats_promoted_workaround = false; 128 int lookup = c->key.iz_lookup; 129 bool uses_depth = (c->fp->program.Base.InputsRead & 130 (1 << FRAG_ATTRIB_WPOS)) != 0; 131 132 assert (lookup < IZ_BIT_MAX); 133 134 /* Crazy workaround in the windowizer, which we need to track in 135 * our register allocation and render target writes. See the "If 136 * statistics are enabled..." paragraph of 11.5.3.2: Early Depth 137 * Test Cases [Pre-DevGT] of the 3D Pipeline - Windower B-Spec. 138 */ 139 if (c->key.stats_wm && 140 (lookup & IZ_PS_KILL_ALPHATEST_BIT) && 141 wm_iz_table[lookup].mode == P) { 142 kill_stats_promoted_workaround = true; 143 } 144 145 if (lookup & IZ_PS_COMPUTES_DEPTH_BIT) 146 c->computes_depth = 1; 147 148 if (wm_iz_table[lookup].sd_present || uses_depth || 149 kill_stats_promoted_workaround) { 150 c->source_depth_reg = reg; 151 reg += 2; 152 } 153 154 if (wm_iz_table[lookup].sd_to_rt || kill_stats_promoted_workaround) 155 c->source_depth_to_render_target = 1; 156 157 if (wm_iz_table[lookup].ds_present || c->key.line_aa != AA_NEVER) { 158 c->aa_dest_stencil_reg = reg; 159 c->runtime_check_aads_emit = (!wm_iz_table[lookup].ds_present && 160 c->key.line_aa == AA_SOMETIMES); 161 reg++; 162 } 163 164 if (wm_iz_table[lookup].dd_present) { 165 c->dest_depth_reg = reg; 166 reg+=2; 167 } 168 169 c->nr_payload_regs = reg; 170 } 171 172
