forked from KolibriOS/kolibrios
434 lines
11 KiB
C
434 lines
11 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "util/u_debug.h"
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#include "pipe/p_shader_tokens.h"
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#include "tgsi_parse.h"
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#include "tgsi_util.h"
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union pointer_hack
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{
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void *pointer;
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uint64_t uint64;
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};
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void *
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tgsi_align_128bit(
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void *unaligned )
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{
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union pointer_hack ph;
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ph.uint64 = 0;
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ph.pointer = unaligned;
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ph.uint64 = (ph.uint64 + 15) & ~15;
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return ph.pointer;
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}
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unsigned
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tgsi_util_get_src_register_swizzle(
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const struct tgsi_src_register *reg,
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unsigned component )
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{
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switch( component ) {
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case 0:
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return reg->SwizzleX;
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case 1:
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return reg->SwizzleY;
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case 2:
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return reg->SwizzleZ;
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case 3:
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return reg->SwizzleW;
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default:
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assert( 0 );
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}
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return 0;
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}
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unsigned
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tgsi_util_get_full_src_register_swizzle(
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const struct tgsi_full_src_register *reg,
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unsigned component )
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{
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return tgsi_util_get_src_register_swizzle(
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®->Register,
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component );
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}
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void
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tgsi_util_set_src_register_swizzle(
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struct tgsi_src_register *reg,
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unsigned swizzle,
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unsigned component )
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{
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switch( component ) {
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case 0:
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reg->SwizzleX = swizzle;
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break;
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case 1:
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reg->SwizzleY = swizzle;
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break;
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case 2:
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reg->SwizzleZ = swizzle;
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break;
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case 3:
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reg->SwizzleW = swizzle;
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break;
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default:
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assert( 0 );
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}
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}
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unsigned
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tgsi_util_get_full_src_register_sign_mode(
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const struct tgsi_full_src_register *reg,
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unsigned component )
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{
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unsigned sign_mode;
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if( reg->Register.Absolute ) {
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/* Consider only the post-abs negation. */
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if( reg->Register.Negate ) {
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sign_mode = TGSI_UTIL_SIGN_SET;
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}
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else {
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sign_mode = TGSI_UTIL_SIGN_CLEAR;
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}
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}
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else {
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if( reg->Register.Negate ) {
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sign_mode = TGSI_UTIL_SIGN_TOGGLE;
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}
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else {
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sign_mode = TGSI_UTIL_SIGN_KEEP;
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}
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}
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return sign_mode;
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}
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void
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tgsi_util_set_full_src_register_sign_mode(
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struct tgsi_full_src_register *reg,
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unsigned sign_mode )
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{
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switch (sign_mode)
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{
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case TGSI_UTIL_SIGN_CLEAR:
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reg->Register.Negate = 0;
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reg->Register.Absolute = 1;
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break;
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case TGSI_UTIL_SIGN_SET:
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reg->Register.Absolute = 1;
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reg->Register.Negate = 1;
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break;
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case TGSI_UTIL_SIGN_TOGGLE:
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reg->Register.Negate = 1;
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reg->Register.Absolute = 0;
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break;
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case TGSI_UTIL_SIGN_KEEP:
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reg->Register.Negate = 0;
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reg->Register.Absolute = 0;
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break;
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default:
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assert( 0 );
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}
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}
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/**
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* Determine which channels of the specificed src register are effectively
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* used by this instruction.
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*/
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unsigned
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tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
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unsigned src_idx)
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{
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const struct tgsi_full_src_register *src = &inst->Src[src_idx];
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unsigned write_mask = inst->Dst[0].Register.WriteMask;
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unsigned read_mask;
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unsigned usage_mask;
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unsigned chan;
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switch (inst->Instruction.Opcode) {
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case TGSI_OPCODE_MOV:
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case TGSI_OPCODE_ARL:
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case TGSI_OPCODE_ARR:
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case TGSI_OPCODE_RCP:
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case TGSI_OPCODE_MUL:
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case TGSI_OPCODE_DIV:
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case TGSI_OPCODE_ADD:
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case TGSI_OPCODE_MIN:
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case TGSI_OPCODE_MAX:
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case TGSI_OPCODE_SLT:
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case TGSI_OPCODE_SGE:
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case TGSI_OPCODE_MAD:
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case TGSI_OPCODE_SUB:
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case TGSI_OPCODE_LRP:
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case TGSI_OPCODE_CND:
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case TGSI_OPCODE_FRC:
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case TGSI_OPCODE_CEIL:
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case TGSI_OPCODE_CLAMP:
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case TGSI_OPCODE_FLR:
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case TGSI_OPCODE_ROUND:
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case TGSI_OPCODE_POW:
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case TGSI_OPCODE_ABS:
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case TGSI_OPCODE_COS:
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case TGSI_OPCODE_SIN:
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case TGSI_OPCODE_DDX:
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case TGSI_OPCODE_DDY:
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case TGSI_OPCODE_SEQ:
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case TGSI_OPCODE_SGT:
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case TGSI_OPCODE_SLE:
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case TGSI_OPCODE_SNE:
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case TGSI_OPCODE_SSG:
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case TGSI_OPCODE_CMP:
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case TGSI_OPCODE_TRUNC:
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case TGSI_OPCODE_NOT:
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case TGSI_OPCODE_AND:
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case TGSI_OPCODE_OR:
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case TGSI_OPCODE_XOR:
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case TGSI_OPCODE_SAD:
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/* Channel-wise operations */
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read_mask = write_mask;
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break;
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case TGSI_OPCODE_EX2:
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case TGSI_OPCODE_LG2:
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case TGSI_OPCODE_RCC:
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read_mask = TGSI_WRITEMASK_X;
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break;
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case TGSI_OPCODE_SCS:
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read_mask = write_mask & TGSI_WRITEMASK_XY ? TGSI_WRITEMASK_X : 0;
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break;
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case TGSI_OPCODE_EXP:
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case TGSI_OPCODE_LOG:
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read_mask = write_mask & TGSI_WRITEMASK_XYZ ? TGSI_WRITEMASK_X : 0;
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break;
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case TGSI_OPCODE_DP2A:
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read_mask = src_idx == 2 ? TGSI_WRITEMASK_X : TGSI_WRITEMASK_XY;
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break;
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case TGSI_OPCODE_DP2:
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read_mask = TGSI_WRITEMASK_XY;
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break;
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case TGSI_OPCODE_DP3:
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read_mask = TGSI_WRITEMASK_XYZ;
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break;
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case TGSI_OPCODE_DP4:
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read_mask = TGSI_WRITEMASK_XYZW;
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break;
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case TGSI_OPCODE_DPH:
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read_mask = src_idx == 0 ? TGSI_WRITEMASK_XYZ : TGSI_WRITEMASK_XYZW;
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break;
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case TGSI_OPCODE_TEX:
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case TGSI_OPCODE_TXD:
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case TGSI_OPCODE_TXB:
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case TGSI_OPCODE_TXL:
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case TGSI_OPCODE_TXP:
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if (src_idx == 0) {
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/* Note that the SHADOW variants use the Z component too */
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switch (inst->Texture.Texture) {
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case TGSI_TEXTURE_1D:
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read_mask = TGSI_WRITEMASK_X;
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break;
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case TGSI_TEXTURE_SHADOW1D:
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read_mask = TGSI_WRITEMASK_XZ;
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break;
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case TGSI_TEXTURE_1D_ARRAY:
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case TGSI_TEXTURE_2D:
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case TGSI_TEXTURE_RECT:
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read_mask = TGSI_WRITEMASK_XY;
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break;
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case TGSI_TEXTURE_SHADOW1D_ARRAY:
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case TGSI_TEXTURE_SHADOW2D:
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case TGSI_TEXTURE_SHADOWRECT:
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case TGSI_TEXTURE_2D_ARRAY:
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case TGSI_TEXTURE_3D:
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case TGSI_TEXTURE_CUBE:
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case TGSI_TEXTURE_2D_MSAA:
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read_mask = TGSI_WRITEMASK_XYZ;
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break;
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case TGSI_TEXTURE_SHADOW2D_ARRAY:
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case TGSI_TEXTURE_CUBE_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE:
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
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read_mask = TGSI_WRITEMASK_XYZW;
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break;
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default:
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assert(0);
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read_mask = 0;
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}
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if (inst->Instruction.Opcode != TGSI_OPCODE_TEX) {
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read_mask |= TGSI_WRITEMASK_W;
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}
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} else {
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/* A safe approximation */
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read_mask = TGSI_WRITEMASK_XYZW;
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}
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break;
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default:
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/* Assume all channels are read */
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read_mask = TGSI_WRITEMASK_XYZW;
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break;
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}
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usage_mask = 0;
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for (chan = 0; chan < 4; ++chan) {
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if (read_mask & (1 << chan)) {
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usage_mask |= 1 << tgsi_util_get_full_src_register_swizzle(src, chan);
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}
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}
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return usage_mask;
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}
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/**
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* Convert a tgsi_ind_register into a tgsi_src_register
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*/
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struct tgsi_src_register
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tgsi_util_get_src_from_ind(const struct tgsi_ind_register *reg)
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{
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struct tgsi_src_register src = { 0 };
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src.File = reg->File;
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src.Index = reg->Index;
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src.SwizzleX = reg->Swizzle;
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src.SwizzleY = reg->Swizzle;
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src.SwizzleZ = reg->Swizzle;
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src.SwizzleW = reg->Swizzle;
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return src;
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}
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/**
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* Return the dimension of the texture coordinates (layer included for array
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* textures), as well as the location of the shadow reference value or the
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* sample index.
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*/
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int
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tgsi_util_get_texture_coord_dim(int tgsi_tex, int *shadow_or_sample)
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{
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int dim;
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/*
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* Depending on the texture target, (src0.xyzw, src1.x) is interpreted
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* differently:
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*
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* (s, X, X, X, X), for BUFFER
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* (s, X, X, X, X), for 1D
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* (s, t, X, X, X), for 2D, RECT
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* (s, t, r, X, X), for 3D, CUBE
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*
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* (s, layer, X, X, X), for 1D_ARRAY
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* (s, t, layer, X, X), for 2D_ARRAY
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* (s, t, r, layer, X), for CUBE_ARRAY
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*
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* (s, X, shadow, X, X), for SHADOW1D
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* (s, t, shadow, X, X), for SHADOW2D, SHADOWRECT
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* (s, t, r, shadow, X), for SHADOWCUBE
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*
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* (s, layer, shadow, X, X), for SHADOW1D_ARRAY
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* (s, t, layer, shadow, X), for SHADOW2D_ARRAY
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* (s, t, r, layer, shadow), for SHADOWCUBE_ARRAY
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*
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* (s, t, sample, X, X), for 2D_MSAA
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* (s, t, layer, sample, X), for 2D_ARRAY_MSAA
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*/
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switch (tgsi_tex) {
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case TGSI_TEXTURE_BUFFER:
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case TGSI_TEXTURE_1D:
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case TGSI_TEXTURE_SHADOW1D:
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dim = 1;
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break;
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case TGSI_TEXTURE_2D:
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case TGSI_TEXTURE_RECT:
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case TGSI_TEXTURE_1D_ARRAY:
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case TGSI_TEXTURE_SHADOW2D:
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case TGSI_TEXTURE_SHADOWRECT:
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case TGSI_TEXTURE_SHADOW1D_ARRAY:
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case TGSI_TEXTURE_2D_MSAA:
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dim = 2;
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break;
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case TGSI_TEXTURE_3D:
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case TGSI_TEXTURE_CUBE:
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case TGSI_TEXTURE_2D_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE:
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case TGSI_TEXTURE_SHADOW2D_ARRAY:
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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dim = 3;
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break;
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case TGSI_TEXTURE_CUBE_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
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dim = 4;
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break;
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default:
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assert(!"unknown texture target");
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dim = 0;
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break;
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}
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if (shadow_or_sample) {
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switch (tgsi_tex) {
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case TGSI_TEXTURE_SHADOW1D:
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/* there is a gap */
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*shadow_or_sample = 2;
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break;
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case TGSI_TEXTURE_SHADOW2D:
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case TGSI_TEXTURE_SHADOWRECT:
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case TGSI_TEXTURE_SHADOWCUBE:
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case TGSI_TEXTURE_SHADOW1D_ARRAY:
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case TGSI_TEXTURE_SHADOW2D_ARRAY:
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case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
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case TGSI_TEXTURE_2D_MSAA:
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case TGSI_TEXTURE_2D_ARRAY_MSAA:
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*shadow_or_sample = dim;
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break;
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default:
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/* no shadow nor sample */
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*shadow_or_sample = -1;
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break;
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}
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}
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return dim;
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}
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