| /* |
| * 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 <idr@us.ibm.com> |
| */ |
| |
| |
| #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_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_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_INT, /* X */ |
| 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_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_UP2H, /* X */ |
| OPCODE_UP2US, /* X */ |
| OPCODE_UP4B, /* X */ |
| OPCODE_UP4UB, /* X */ |
| OPCODE_X2D, /* X */ |
| OPCODE_XPD, /* X X X */ |
| MAX_OPCODE |
| } gl_inst_opcode; |
| |
| |
| /** |
| * 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; |
| |
| /** |
| * For TEX instructions in shaders, the sampler to use for the |
| * texture lookup. |
| */ |
| GLint Sampler; |
| |
| 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 */ |
