/* * Mesa 3-D graphics library * Version: 6.5.3 * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /** * \file prog_instruction.h * * Vertex/fragment program instruction datatypes and constants. * * \author Brian Paul * \author Keith Whitwell * \author Ian Romanick */ #ifndef PROG_INSTRUCTION_H #define PROG_INSTRUCTION_H /** * Swizzle indexes. * Do not change! */ /*@{*/ #define SWIZZLE_X 0 #define SWIZZLE_Y 1 #define SWIZZLE_Z 2 #define SWIZZLE_W 3 #define SWIZZLE_ZERO 4 /**< For SWZ instruction only */ #define SWIZZLE_ONE 5 /**< For SWZ instruction only */ #define SWIZZLE_NIL 7 /**< used during shader code gen (undefined value) */ /*@}*/ #define MAKE_SWIZZLE4(a,b,c,d) (((a)<<0) | ((b)<<3) | ((c)<<6) | ((d)<<9)) #define SWIZZLE_NOOP MAKE_SWIZZLE4(0,1,2,3) #define GET_SWZ(swz, idx) (((swz) >> ((idx)*3)) & 0x7) #define GET_BIT(msk, idx) (((msk) >> (idx)) & 0x1) #define SWIZZLE_XYZW MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W) #define SWIZZLE_XXXX MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X) #define SWIZZLE_YYYY MAKE_SWIZZLE4(SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y) #define SWIZZLE_ZZZZ MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_Z, SWIZZLE_Z, SWIZZLE_Z) #define SWIZZLE_WWWW MAKE_SWIZZLE4(SWIZZLE_W, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W) /** * Writemask values, 1 bit per component. */ /*@{*/ #define WRITEMASK_X 0x1 #define WRITEMASK_Y 0x2 #define WRITEMASK_XY 0x3 #define WRITEMASK_Z 0x4 #define WRITEMASK_XZ 0x5 #define WRITEMASK_YZ 0x6 #define WRITEMASK_XYZ 0x7 #define WRITEMASK_W 0x8 #define WRITEMASK_XW 0x9 #define WRITEMASK_YW 0xa #define WRITEMASK_XYW 0xb #define WRITEMASK_ZW 0xc #define WRITEMASK_XZW 0xd #define WRITEMASK_YZW 0xe #define WRITEMASK_XYZW 0xf /*@}*/ /** * Condition codes */ /*@{*/ #define COND_GT 1 /**< greater than zero */ #define COND_EQ 2 /**< equal to zero */ #define COND_LT 3 /**< less than zero */ #define COND_UN 4 /**< unordered (NaN) */ #define COND_GE 5 /**< greater then or equal to zero */ #define COND_LE 6 /**< less then or equal to zero */ #define COND_NE 7 /**< not equal to zero */ #define COND_TR 8 /**< always true */ #define COND_FL 9 /**< always false */ /*@}*/ /** * Instruction precision for GL_NV_fragment_program */ /*@{*/ #define FLOAT32 0x1 #define FLOAT16 0x2 #define FIXED12 0x4 /*@}*/ /** * Saturation modes when storing values. */ /*@{*/ #define SATURATE_OFF 0 #define SATURATE_ZERO_ONE 1 #define SATURATE_PLUS_MINUS_ONE 2 /*@}*/ /** * Per-component negation masks */ /*@{*/ #define NEGATE_X 0x1 #define NEGATE_Y 0x2 #define NEGATE_Z 0x4 #define NEGATE_W 0x8 #define NEGATE_XYZW 0xf #define NEGATE_NONE 0x0 /*@}*/ /** * Program instruction opcodes, for both vertex and fragment programs. * \note changes to this opcode list must be reflected in t_vb_arbprogram.c */ typedef enum prog_opcode { /* ARB_vp ARB_fp NV_vp NV_fp GLSL */ /*------------------------------------------*/ OPCODE_NOP = 0, /* X */ OPCODE_ABS, /* X X 1.1 X */ OPCODE_ADD, /* X X X X X */ OPCODE_AND, /* */ OPCODE_ARA, /* 2 */ OPCODE_ARL, /* X X */ OPCODE_ARL_NV, /* 2 */ OPCODE_ARR, /* 2 */ OPCODE_BGNLOOP, /* opt */ OPCODE_BGNSUB, /* opt */ OPCODE_BRA, /* 2 X */ OPCODE_BRK, /* 2 opt */ OPCODE_CAL, /* 2 2 */ OPCODE_CMP, /* X */ OPCODE_CONT, /* opt */ OPCODE_COS, /* X 2 X X */ OPCODE_DDX, /* X X */ OPCODE_DDY, /* X X */ OPCODE_DP2, /* 2 */ OPCODE_DP2A, /* 2 */ OPCODE_DP3, /* X X X X X */ OPCODE_DP4, /* X X X X X */ OPCODE_DPH, /* X X 1.1 */ OPCODE_DST, /* X X X X */ OPCODE_ELSE, /* X */ OPCODE_END, /* X X X X opt */ OPCODE_ENDIF, /* opt */ OPCODE_ENDLOOP, /* opt */ OPCODE_ENDSUB, /* opt */ OPCODE_EX2, /* X X 2 X X */ OPCODE_EXP, /* X X X */ OPCODE_FLR, /* X X 2 X X */ OPCODE_FRC, /* X X 2 X X */ OPCODE_IF, /* opt */ OPCODE_KIL, /* X */ OPCODE_KIL_NV, /* X X */ OPCODE_LG2, /* X X 2 X X */ OPCODE_LIT, /* X X X X */ OPCODE_LOG, /* X X X */ OPCODE_LRP, /* X X */ OPCODE_MAD, /* X X X X X */ OPCODE_MAX, /* X X X X X */ OPCODE_MIN, /* X X X X X */ OPCODE_MOV, /* X X X X X */ OPCODE_MUL, /* X X X X X */ OPCODE_NOISE1, /* X */ OPCODE_NOISE2, /* X */ OPCODE_NOISE3, /* X */ OPCODE_NOISE4, /* X */ OPCODE_NOT, /* */ OPCODE_NRM3, /* */ OPCODE_NRM4, /* */ OPCODE_OR, /* */ OPCODE_PK2H, /* X */ OPCODE_PK2US, /* X */ OPCODE_PK4B, /* X */ OPCODE_PK4UB, /* X */ OPCODE_POW, /* X X X X */ OPCODE_POPA, /* 3 */ OPCODE_PRINT, /* X X */ OPCODE_PUSHA, /* 3 */ OPCODE_RCC, /* 1.1 */ OPCODE_RCP, /* X X X X X */ OPCODE_RET, /* 2 2 */ OPCODE_RFL, /* X X */ OPCODE_RSQ, /* X X X X X */ OPCODE_SCS, /* X */ OPCODE_SEQ, /* 2 X X */ OPCODE_SFL, /* 2 X */ OPCODE_SGE, /* X X X X X */ OPCODE_SGT, /* 2 X X */ OPCODE_SIN, /* X 2 X X */ OPCODE_SLE, /* 2 X X */ OPCODE_SLT, /* X X X X X */ OPCODE_SNE, /* 2 X X */ OPCODE_SSG, /* 2 */ OPCODE_STR, /* 2 X */ OPCODE_SUB, /* X X 1.1 X X */ OPCODE_SWZ, /* X X */ OPCODE_TEX, /* X 3 X X */ OPCODE_TXB, /* X 3 X */ OPCODE_TXD, /* X X */ OPCODE_TXL, /* 3 2 X */ OPCODE_TXP, /* X X */ OPCODE_TXP_NV, /* 3 X */ OPCODE_TRUNC, /* X */ OPCODE_UP2H, /* X */ OPCODE_UP2US, /* X */ OPCODE_UP4B, /* X */ OPCODE_UP4UB, /* X */ OPCODE_X2D, /* X */ OPCODE_XOR, /* */ OPCODE_XPD, /* X X X */ MAX_OPCODE } gl_inst_opcode; /* temporary, just in case, remove soon */ #define OPCODE_INT OPCODE_TRUNC /** * Instruction source register. */ struct prog_src_register { GLuint File:4; /**< One of the PROGRAM_* register file values. */ GLint Index:9; /**< May be negative for relative addressing. */ GLuint Swizzle:12; GLuint RelAddr:1; /** * \name Source register "sign" control. * * The ARB and NV extensions allow varrying degrees of control over the * sign of the source vector components. These values allow enough control * for all flavors of the extensions. */ /*@{*/ /** * Per-component negation for the SWZ instruction. For non-SWZ * instructions the only possible values are NEGATE_XYZW and NEGATE_NONE. * * \since * ARB_vertex_program, ARB_fragment_program */ GLuint NegateBase:4; /** * Take the component-wise absolute value. * * \since * NV_fragment_program, NV_fragment_program_option, NV_vertex_program2, * NV_vertex_program2_option. */ GLuint Abs:1; /** * Post-absolute value negation (all components). */ GLuint NegateAbs:1; /*@}*/ }; /** * Instruction destination register. */ struct prog_dst_register { /** * One of the PROGRAM_* register file values. */ GLuint File:4; GLuint Index:8; GLuint WriteMask:4; /** * \name Conditional destination update control. * * \since * NV_fragment_program, NV_fragment_program_option, NV_vertex_program2, * NV_vertex_program2_option. */ /*@{*/ /** * Takes one of the 9 possible condition values (EQ, FL, GT, GE, LE, LT, * NE, TR, or UN). Dest reg is only written to if the matching * (swizzled) condition code value passes. When a conditional update mask * is not specified, this will be \c COND_TR. */ GLuint CondMask:4; /** * Condition code swizzle value. */ GLuint CondSwizzle:12; /** * Selects the condition code register to use for conditional destination * update masking. In NV_fragmnet_program or NV_vertex_program2 mode, only * condition code register 0 is available. In NV_vertex_program3 mode, * condition code registers 0 and 1 are available. */ GLuint CondSrc:1; /*@}*/ GLuint pad:31; }; /** * Vertex/fragment program instruction. */ struct prog_instruction { gl_inst_opcode Opcode; #if FEATURE_MESA_program_debug GLshort StringPos; #endif /** * Arbitrary data. Used for the PRINT, CAL, and BRA instructions. */ void *Data; struct prog_src_register SrcReg[3]; struct prog_dst_register DstReg; /** * Indicates that the instruction should update the condition code * register. * * \since * NV_fragment_program, NV_fragment_program_option, NV_vertex_program2, * NV_vertex_program2_option. */ GLuint CondUpdate:1; /** * If prog_instruction::CondUpdate is \c GL_TRUE, this value selects the * condition code register that is to be updated. * * In GL_NV_fragment_program or GL_NV_vertex_program2 mode, only condition * code register 0 is available. In GL_NV_vertex_program3 mode, condition * code registers 0 and 1 are available. * * \since * NV_fragment_program, NV_fragment_program_option, NV_vertex_program2, * NV_vertex_program2_option. */ GLuint CondDst:1; /** * Saturate each value of the vectored result to the range [0,1] or the * range [-1,1]. \c SSAT mode (i.e., saturation to the range [-1,1]) is * only available in NV_fragment_program2 mode. * Value is one of the SATURATE_* tokens. * * \since * NV_fragment_program, NV_fragment_program_option, NV_vertex_program3. */ GLuint SaturateMode:2; /** * Per-instruction selectable precision. * * \since * NV_fragment_program, NV_fragment_program_option. */ GLuint Precision:3; /** * \name Texture source controls. * * The texture source controls are only used with the \c TEX, \c TXD, * \c TXL, and \c TXP instructions. * * \since * ARB_fragment_program, NV_fragment_program, NV_vertex_program3. */ /*@{*/ /** * Source texture unit. OpenGL supports a maximum of 32 texture * units. */ GLuint TexSrcUnit:5; /** * Source texture target, one of TEXTURE_{1D,2D,3D,CUBE,RECT}_INDEX. */ GLuint TexSrcTarget:3; /*@}*/ /** * For BRA and CAL instructions, the location to jump to. * For BGNLOOP, points to ENDLOOP (and vice-versa). * For BRK, points to BGNLOOP (which points to ENDLOOP). * For IF, points to else or endif. * For ELSE, points to endif. */ GLint BranchTarget; #if 0 /** * For TEX instructions in shaders, the sampler to use for the * texture lookup. */ GLint Sampler; #endif const char *Comment; }; extern void _mesa_init_instructions(struct prog_instruction *inst, GLuint count); extern struct prog_instruction * _mesa_alloc_instructions(GLuint numInst); extern struct prog_instruction * _mesa_realloc_instructions(struct prog_instruction *oldInst, GLuint numOldInst, GLuint numNewInst); extern struct prog_instruction * _mesa_copy_instructions(struct prog_instruction *dest, const struct prog_instruction *src, GLuint n); extern void _mesa_free_instructions(struct prog_instruction *inst, GLuint count); extern GLuint _mesa_num_inst_src_regs(gl_inst_opcode opcode); extern GLuint _mesa_num_inst_dst_regs(gl_inst_opcode opcode); extern GLboolean _mesa_is_tex_instruction(gl_inst_opcode opcode); extern const char * _mesa_opcode_string(gl_inst_opcode opcode); #endif /* PROG_INSTRUCTION_H */