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Diffstat (limited to 'src/mesa/shader/prog_instruction.h')
| -rw-r--r-- | src/mesa/shader/prog_instruction.h | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/src/mesa/shader/prog_instruction.h b/src/mesa/shader/prog_instruction.h new file mode 100644 index 0000000000..dc2d2dc29b --- /dev/null +++ b/src/mesa/shader/prog_instruction.h @@ -0,0 +1,451 @@ +/* + * 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_BRK0, /* opt */ + OPCODE_BRK1, /* opt */ + OPCODE_CAL, /* 2 2 */ + OPCODE_CMP, /* X */ + OPCODE_CONT, /* opt */ + OPCODE_CONT0, /* opt */ + OPCODE_CONT1, /* 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 GLuint +_mesa_num_inst_src_regs(gl_inst_opcode opcode); + +extern const char * +_mesa_opcode_string(gl_inst_opcode opcode); + + +#endif /* PROG_INSTRUCTION_H */ |