1 /************************************************************************** 2 * 3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * 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, sub license, 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 portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #ifndef TGSI_TRANSFORM_H 29 #define TGSI_TRANSFORM_H 30 31 32 #include "pipe/p_shader_tokens.h" 33 #include "tgsi/tgsi_parse.h" 34 #include "tgsi/tgsi_build.h" 35 36 37 38 /** 39 * Subclass this to add caller-specific data 40 */ 41 struct tgsi_transform_context 42 { 43 /**** PUBLIC ***/ 44 45 /** 46 * User-defined callbacks invoked per instruction. 47 */ 48 void (*transform_instruction)(struct tgsi_transform_context *ctx, 49 struct tgsi_full_instruction *inst); 50 51 void (*transform_declaration)(struct tgsi_transform_context *ctx, 52 struct tgsi_full_declaration *decl); 53 54 void (*transform_immediate)(struct tgsi_transform_context *ctx, 55 struct tgsi_full_immediate *imm); 56 void (*transform_property)(struct tgsi_transform_context *ctx, 57 struct tgsi_full_property *prop); 58 59 /** 60 * Called at end of input program to allow caller to append extra 61 * instructions. Return number of tokens emitted. 62 */ 63 void (*epilog)(struct tgsi_transform_context *ctx); 64 65 66 /*** PRIVATE ***/ 67 68 /** 69 * These are setup by tgsi_transform_shader() and cannot be overridden. 70 * Meant to be called from in the above user callback functions. 71 */ 72 void (*emit_instruction)(struct tgsi_transform_context *ctx, 73 const struct tgsi_full_instruction *inst); 74 void (*emit_declaration)(struct tgsi_transform_context *ctx, 75 const struct tgsi_full_declaration *decl); 76 void (*emit_immediate)(struct tgsi_transform_context *ctx, 77 const struct tgsi_full_immediate *imm); 78 void (*emit_property)(struct tgsi_transform_context *ctx, 79 const struct tgsi_full_property *prop); 80 81 struct tgsi_header *header; 82 uint max_tokens_out; 83 struct tgsi_token *tokens_out; 84 uint ti; 85 }; 86 87 88 89 extern int 90 tgsi_transform_shader(const struct tgsi_token *tokens_in, 91 struct tgsi_token *tokens_out, 92 uint max_tokens_out, 93 struct tgsi_transform_context *ctx); 94 95 96 #endif /* TGSI_TRANSFORM_H */ 97