dlls/d3dx9_36/asmparser.c

   1 /*
   2  * Direct3D asm shader parser
   3  *
   4  * Copyright 2008 Stefan Dösinger
   5  * Copyright 2009 Matteo Bruni
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25 #include "wine/debug.h"
  26
  27 #include "d3dx9_36_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(asmshader);
  30 WINE_DECLARE_DEBUG_CHANNEL(parsed_shader);
  31
  32
  33 /****************************************************************
  34  * Common(non-version specific) shader parser control code      *
  35  ****************************************************************/
  36
  37 static void asmparser_end(struct asm_parser *This) {
  38     TRACE("Finalizing shader\n");
  39 }
  40
  41 static void asmparser_instr(struct asm_parser *This, DWORD opcode,
  42                             DWORD mod, DWORD shift,
  43                             BWRITER_COMPARISON_TYPE comp,
  44                             const struct shader_reg *dst,
  45                             const struct src_regs *srcs, int expectednsrcs) {
  46     struct instruction *instr;
  47     unsigned int i;
  48     BOOL firstreg = TRUE;
  49     unsigned int src_count = srcs ? srcs->count : 0;
  50
  51     if(!This->shader) return;
  52
  53     TRACE_(parsed_shader)("%s%s ", debug_print_opcode(opcode),
  54                           debug_print_dstmod(mod));
  55     if(dst) {
  56         TRACE_(parsed_shader)("%s", debug_print_dstreg(dst, This->shader->type));
  57         firstreg = FALSE;
  58     }
  59     for(i = 0; i < src_count; i++) {
  60         if(!firstreg) TRACE_(parsed_shader)(", ");
  61         else firstreg = FALSE;
  62         TRACE_(parsed_shader)("%s", debug_print_srcreg(&srcs->reg[i],
  63                                                        This->shader->type));
  64     }
  65     TRACE_(parsed_shader)("\n");
  66
  67     if(src_count != expectednsrcs) {
  68         asmparser_message(This, "Line %u: Wrong number of source registers\n", This->line_no);
  69         set_parse_status(This, PARSE_ERR);
  70         return;
  71     }
  72
  73     instr = alloc_instr(src_count);
  74     if(!instr) {
  75         ERR("Error allocating memory for the instruction\n");
  76         set_parse_status(This, PARSE_ERR);
  77         return;
  78     }
  79
  80     instr->opcode = opcode;
  81     instr->dstmod = mod;
  82     instr->shift = shift;
  83     instr->comptype = comp;
  84     if(dst) This->funcs->dstreg(This, instr, dst);
  85     for(i = 0; i < src_count; i++) {
  86         This->funcs->srcreg(This, instr, i, &srcs->reg[i]);
  87     }
  88
  89     if(!add_instruction(This->shader, instr)) {
  90         ERR("Out of memory\n");
  91         set_parse_status(This, PARSE_ERR);
  92     }
  93 }
  94
  95 static void asmparser_srcreg_vs_3(struct asm_parser *This,
  96                                   struct instruction *instr, int num,
  97                                   const struct shader_reg *src) {
  98     memcpy(&instr->src[num], src, sizeof(*src));
  99 }
 100
 101 static void asmparser_dstreg_vs_3(struct asm_parser *This,
 102                                   struct instruction *instr,
 103                                   const struct shader_reg *dst) {
 104     memcpy(&instr->dst, dst, sizeof(*dst));
 105     instr->has_dst = TRUE;
 106 }
 107
 108 static void asmparser_predicate_unsupported(struct asm_parser *This,
 109                                             const struct shader_reg *predicate) {
 110     asmparser_message(This, "Line %u: Predicate not supported in < VS 2.0 or PS 2.x\n", This->line_no);
 111     set_parse_status(This, PARSE_ERR);
 112 }
 113
 114 static void asmparser_coissue_unsupported(struct asm_parser *This) {
 115     asmparser_message(This, "Line %u: Coissue is only supported in pixel shaders versions <= 1.4\n", This->line_no);
 116     set_parse_status(This, PARSE_ERR);
 117 }
 118
 119 static const struct asmparser_backend parser_vs_3 = {
 120     asmparser_dstreg_vs_3,
 121     asmparser_srcreg_vs_3,
 122
 123     asmparser_predicate_unsupported,
 124     asmparser_coissue_unsupported,
 125
 126     asmparser_end,
 127
 128     asmparser_instr,
 129 };
 130
 131 void create_vs30_parser(struct asm_parser *ret) {
 132     TRACE_(parsed_shader)("vs_3_0\n");
 133
 134     ret->shader = asm_alloc(sizeof(*ret->shader));
 135     if(!ret->shader) {
 136         ERR("Failed to allocate memory for the shader\n");
 137         set_parse_status(ret, PARSE_ERR);
 138         return;
 139     }
 140
 141     ret->shader->type = ST_VERTEX;
 142     ret->shader->version = BWRITERVS_VERSION(3, 0);
 143     ret->funcs = &parser_vs_3;
 144 }