diff options
Diffstat (limited to 'mesalib/src/mesa/shader/prog_instruction.c')
| -rw-r--r-- | mesalib/src/mesa/shader/prog_instruction.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/mesalib/src/mesa/shader/prog_instruction.c b/mesalib/src/mesa/shader/prog_instruction.c new file mode 100644 index 000000000..44c961927 --- /dev/null +++ b/mesalib/src/mesa/shader/prog_instruction.c @@ -0,0 +1,352 @@ +/* + * Mesa 3-D graphics library + * Version: 7.3 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2009 VMware, Inc. 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. + */ + + +#include "main/glheader.h" +#include "main/imports.h" +#include "main/mtypes.h" +#include "prog_instruction.h" + + +/** + * Initialize program instruction fields to defaults. + * \param inst first instruction to initialize + * \param count number of instructions to initialize + */ +void +_mesa_init_instructions(struct prog_instruction *inst, GLuint count) +{ + GLuint i; + + _mesa_bzero(inst, count * sizeof(struct prog_instruction)); + + for (i = 0; i < count; i++) { + inst[i].SrcReg[0].File = PROGRAM_UNDEFINED; + inst[i].SrcReg[0].Swizzle = SWIZZLE_NOOP; + inst[i].SrcReg[1].File = PROGRAM_UNDEFINED; + inst[i].SrcReg[1].Swizzle = SWIZZLE_NOOP; + inst[i].SrcReg[2].File = PROGRAM_UNDEFINED; + inst[i].SrcReg[2].Swizzle = SWIZZLE_NOOP; + + inst[i].DstReg.File = PROGRAM_UNDEFINED; + inst[i].DstReg.WriteMask = WRITEMASK_XYZW; + inst[i].DstReg.CondMask = COND_TR; + inst[i].DstReg.CondSwizzle = SWIZZLE_NOOP; + + inst[i].SaturateMode = SATURATE_OFF; + inst[i].Precision = FLOAT32; + } +} + + +/** + * Allocate an array of program instructions. + * \param numInst number of instructions + * \return pointer to instruction memory + */ +struct prog_instruction * +_mesa_alloc_instructions(GLuint numInst) +{ + return (struct prog_instruction *) + _mesa_calloc(numInst * sizeof(struct prog_instruction)); +} + + +/** + * Reallocate memory storing an array of program instructions. + * This is used when we need to append additional instructions onto an + * program. + * \param oldInst pointer to first of old/src instructions + * \param numOldInst number of instructions at <oldInst> + * \param numNewInst desired size of new instruction array. + * \return pointer to start of new instruction array. + */ +struct prog_instruction * +_mesa_realloc_instructions(struct prog_instruction *oldInst, + GLuint numOldInst, GLuint numNewInst) +{ + struct prog_instruction *newInst; + + newInst = (struct prog_instruction *) + _mesa_realloc(oldInst, + numOldInst * sizeof(struct prog_instruction), + numNewInst * sizeof(struct prog_instruction)); + + return newInst; +} + + +/** + * Copy an array of program instructions. + * \param dest pointer to destination. + * \param src pointer to source. + * \param n number of instructions to copy. + * \return pointer to destination. + */ +struct prog_instruction * +_mesa_copy_instructions(struct prog_instruction *dest, + const struct prog_instruction *src, GLuint n) +{ + GLuint i; + _mesa_memcpy(dest, src, n * sizeof(struct prog_instruction)); + for (i = 0; i < n; i++) { + if (src[i].Comment) + dest[i].Comment = _mesa_strdup(src[i].Comment); + } + return dest; +} + + +/** + * Free an array of instructions + */ +void +_mesa_free_instructions(struct prog_instruction *inst, GLuint count) +{ + GLuint i; + for (i = 0; i < count; i++) { + if (inst[i].Data) + _mesa_free(inst[i].Data); + if (inst[i].Comment) + _mesa_free((char *) inst[i].Comment); + } + _mesa_free(inst); +} + + +/** + * Basic info about each instruction + */ +struct instruction_info +{ + gl_inst_opcode Opcode; + const char *Name; + GLuint NumSrcRegs; + GLuint NumDstRegs; +}; + +/** + * Instruction info + * \note Opcode should equal array index! + */ +static const struct instruction_info InstInfo[MAX_OPCODE] = { + { OPCODE_NOP, "NOP", 0, 0 }, + { OPCODE_ABS, "ABS", 1, 1 }, + { OPCODE_ADD, "ADD", 2, 1 }, + { OPCODE_AND, "AND", 2, 1 }, + { OPCODE_ARA, "ARA", 1, 1 }, + { OPCODE_ARL, "ARL", 1, 1 }, + { OPCODE_ARL_NV, "ARL_NV", 1, 1 }, + { OPCODE_ARR, "ARL", 1, 1 }, + { OPCODE_BGNLOOP,"BGNLOOP", 0, 0 }, + { OPCODE_BGNSUB, "BGNSUB", 0, 0 }, + { OPCODE_BRA, "BRA", 0, 0 }, + { OPCODE_BRK, "BRK", 0, 0 }, + { OPCODE_CAL, "CAL", 0, 0 }, + { OPCODE_CMP, "CMP", 3, 1 }, + { OPCODE_CONT, "CONT", 0, 0 }, + { OPCODE_COS, "COS", 1, 1 }, + { OPCODE_DDX, "DDX", 1, 1 }, + { OPCODE_DDY, "DDY", 1, 1 }, + { OPCODE_DP2, "DP2", 2, 1 }, + { OPCODE_DP2A, "DP2A", 3, 1 }, + { OPCODE_DP3, "DP3", 2, 1 }, + { OPCODE_DP4, "DP4", 2, 1 }, + { OPCODE_DPH, "DPH", 2, 1 }, + { OPCODE_DST, "DST", 2, 1 }, + { OPCODE_ELSE, "ELSE", 0, 0 }, + { OPCODE_END, "END", 0, 0 }, + { OPCODE_ENDIF, "ENDIF", 0, 0 }, + { OPCODE_ENDLOOP,"ENDLOOP", 0, 0 }, + { OPCODE_ENDSUB, "ENDSUB", 0, 0 }, + { OPCODE_EX2, "EX2", 1, 1 }, + { OPCODE_EXP, "EXP", 1, 1 }, + { OPCODE_FLR, "FLR", 1, 1 }, + { OPCODE_FRC, "FRC", 1, 1 }, + { OPCODE_IF, "IF", 1, 0 }, + { OPCODE_KIL, "KIL", 1, 0 }, + { OPCODE_KIL_NV, "KIL_NV", 0, 0 }, + { OPCODE_LG2, "LG2", 1, 1 }, + { OPCODE_LIT, "LIT", 1, 1 }, + { OPCODE_LOG, "LOG", 1, 1 }, + { OPCODE_LRP, "LRP", 3, 1 }, + { OPCODE_MAD, "MAD", 3, 1 }, + { OPCODE_MAX, "MAX", 2, 1 }, + { OPCODE_MIN, "MIN", 2, 1 }, + { OPCODE_MOV, "MOV", 1, 1 }, + { OPCODE_MUL, "MUL", 2, 1 }, + { OPCODE_NOISE1, "NOISE1", 1, 1 }, + { OPCODE_NOISE2, "NOISE2", 1, 1 }, + { OPCODE_NOISE3, "NOISE3", 1, 1 }, + { OPCODE_NOISE4, "NOISE4", 1, 1 }, + { OPCODE_NOT, "NOT", 1, 1 }, + { OPCODE_NRM3, "NRM3", 1, 1 }, + { OPCODE_NRM4, "NRM4", 1, 1 }, + { OPCODE_OR, "OR", 2, 1 }, + { OPCODE_PK2H, "PK2H", 1, 1 }, + { OPCODE_PK2US, "PK2US", 1, 1 }, + { OPCODE_PK4B, "PK4B", 1, 1 }, + { OPCODE_PK4UB, "PK4UB", 1, 1 }, + { OPCODE_POW, "POW", 2, 1 }, + { OPCODE_POPA, "POPA", 0, 0 }, + { OPCODE_PRINT, "PRINT", 1, 0 }, + { OPCODE_PUSHA, "PUSHA", 0, 0 }, + { OPCODE_RCC, "RCC", 1, 1 }, + { OPCODE_RCP, "RCP", 1, 1 }, + { OPCODE_RET, "RET", 0, 0 }, + { OPCODE_RFL, "RFL", 1, 1 }, + { OPCODE_RSQ, "RSQ", 1, 1 }, + { OPCODE_SCS, "SCS", 1, 1 }, + { OPCODE_SEQ, "SEQ", 2, 1 }, + { OPCODE_SFL, "SFL", 0, 1 }, + { OPCODE_SGE, "SGE", 2, 1 }, + { OPCODE_SGT, "SGT", 2, 1 }, + { OPCODE_SIN, "SIN", 1, 1 }, + { OPCODE_SLE, "SLE", 2, 1 }, + { OPCODE_SLT, "SLT", 2, 1 }, + { OPCODE_SNE, "SNE", 2, 1 }, + { OPCODE_SSG, "SSG", 1, 1 }, + { OPCODE_STR, "STR", 0, 1 }, + { OPCODE_SUB, "SUB", 2, 1 }, + { OPCODE_SWZ, "SWZ", 1, 1 }, + { OPCODE_TEX, "TEX", 1, 1 }, + { OPCODE_TXB, "TXB", 1, 1 }, + { OPCODE_TXD, "TXD", 3, 1 }, + { OPCODE_TXL, "TXL", 1, 1 }, + { OPCODE_TXP, "TXP", 1, 1 }, + { OPCODE_TXP_NV, "TXP_NV", 1, 1 }, + { OPCODE_TRUNC, "TRUNC", 1, 1 }, + { OPCODE_UP2H, "UP2H", 1, 1 }, + { OPCODE_UP2US, "UP2US", 1, 1 }, + { OPCODE_UP4B, "UP4B", 1, 1 }, + { OPCODE_UP4UB, "UP4UB", 1, 1 }, + { OPCODE_X2D, "X2D", 3, 1 }, + { OPCODE_XOR, "XOR", 2, 1 }, + { OPCODE_XPD, "XPD", 2, 1 } +}; + + +/** + * Return the number of src registers for the given instruction/opcode. + */ +GLuint +_mesa_num_inst_src_regs(gl_inst_opcode opcode) +{ + ASSERT(opcode < MAX_OPCODE); + ASSERT(opcode == InstInfo[opcode].Opcode); + ASSERT(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode); + return InstInfo[opcode].NumSrcRegs; +} + + +/** + * Return the number of dst registers for the given instruction/opcode. + */ +GLuint +_mesa_num_inst_dst_regs(gl_inst_opcode opcode) +{ + ASSERT(opcode < MAX_OPCODE); + ASSERT(opcode == InstInfo[opcode].Opcode); + ASSERT(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode); + return InstInfo[opcode].NumDstRegs; +} + + +GLboolean +_mesa_is_tex_instruction(gl_inst_opcode opcode) +{ + return (opcode == OPCODE_TEX || + opcode == OPCODE_TXB || + opcode == OPCODE_TXD || + opcode == OPCODE_TXL || + opcode == OPCODE_TXP); +} + + +/** + * Check if there's a potential src/dst register data dependency when + * using SOA execution. + * Example: + * MOV T, T.yxwz; + * This would expand into: + * MOV t0, t1; + * MOV t1, t0; + * MOV t2, t3; + * MOV t3, t2; + * The second instruction will have the wrong value for t0 if executed as-is. + */ +GLboolean +_mesa_check_soa_dependencies(const struct prog_instruction *inst) +{ + GLuint i, chan; + + if (inst->DstReg.WriteMask == WRITEMASK_X || + inst->DstReg.WriteMask == WRITEMASK_Y || + inst->DstReg.WriteMask == WRITEMASK_Z || + inst->DstReg.WriteMask == WRITEMASK_W || + inst->DstReg.WriteMask == 0x0) { + /* no chance of data dependency */ + return GL_FALSE; + } + + /* loop over src regs */ + for (i = 0; i < 3; i++) { + if (inst->SrcReg[i].File == inst->DstReg.File && + inst->SrcReg[i].Index == inst->DstReg.Index) { + /* loop over dest channels */ + GLuint channelsWritten = 0x0; + for (chan = 0; chan < 4; chan++) { + if (inst->DstReg.WriteMask & (1 << chan)) { + /* check if we're reading a channel that's been written */ + GLuint swizzle = GET_SWZ(inst->SrcReg[i].Swizzle, chan); + if (swizzle <= SWIZZLE_W && + (channelsWritten & (1 << swizzle))) { + return GL_TRUE; + } + + channelsWritten |= (1 << chan); + } + } + } + } + return GL_FALSE; +} + + +/** + * Return string name for given program opcode. + */ +const char * +_mesa_opcode_string(gl_inst_opcode opcode) +{ + if (opcode < MAX_OPCODE) + return InstInfo[opcode].Name; + else { + static char s[20]; + _mesa_snprintf(s, sizeof(s), "OP%u", opcode); + return s; + } +} + |