/* * Mesa 3-D graphics library * Version: 6.3 * * Copyright (C) 1999-2004 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 t_arb_program.c * Compile vertex programs to an intermediate representation. * Execute vertex programs over a buffer of vertices. * \author Keith Whitwell, Brian Paul */ #include "glheader.h" #include "context.h" #include "imports.h" #include "macros.h" #include "mtypes.h" #include "arbprogparse.h" #include "light.h" #include "program.h" #include "math/m_matrix.h" #include "math/m_translate.h" #include "t_context.h" #include "t_pipeline.h" #include "t_vb_arbprogram.h" #define DISASSEM 0 /*--------------------------------------------------------------------------- */ struct opcode_info { GLuint nr_args; const char *string; void (*print)( union instruction , const struct opcode_info * ); }; struct compilation { GLuint reg_active; union instruction *csr; }; #define ARB_VP_MACHINE(stage) ((struct arb_vp_machine *)(stage->privatePtr)) #define PUFF(x) ((x)[1] = (x)[2] = (x)[3] = (x)[0]) /* Lower precision functions for the EXP, LOG and LIT opcodes. The * LOG2() implementation is probably not accurate enough, and the * attempted optimization for Exp2 is definitely not accurate * enough - it discards all of t's fractional bits! */ static GLfloat RoughApproxLog2(GLfloat t) { return LOG2(t); } static GLfloat RoughApproxExp2(GLfloat t) { #if 0 fi_type fi; fi.i = (GLint) t; fi.i = (fi.i << 23) + 0x3f800000; return fi.f; #else return (GLfloat) _mesa_pow(2.0, t); #endif } static GLfloat RoughApproxPower(GLfloat x, GLfloat y) { return RoughApproxExp2(y * RoughApproxLog2(x)); } /* Higher precision functions for the EX2, LG2 and POW opcodes: */ static GLfloat ApproxLog2(GLfloat t) { return (GLfloat) (log(t) * 1.442695F); } static GLfloat ApproxExp2(GLfloat t) { return (GLfloat) _mesa_pow(2.0, t); } static GLfloat ApproxPower(GLfloat x, GLfloat y) { return (GLfloat) _mesa_pow(x, y); } static GLfloat rough_approx_log2_0_1(GLfloat x) { return LOG2(x); } /** * Perform a reduced swizzle: */ static void do_RSW( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.rsw.dst]; const GLfloat *arg0 = m->File[op.rsw.file0][op.rsw.idx0]; GLuint swz = op.rsw.swz; GLuint neg = op.rsw.neg; result[0] = arg0[GET_RSW(swz, 0)]; result[1] = arg0[GET_RSW(swz, 1)]; result[2] = arg0[GET_RSW(swz, 2)]; result[3] = arg0[GET_RSW(swz, 3)]; if (neg) { if (neg & 0x1) result[0] = -result[0]; if (neg & 0x2) result[1] = -result[1]; if (neg & 0x4) result[2] = -result[2]; if (neg & 0x8) result[3] = -result[3]; } } /* Used to implement write masking. To make things easier for the sse * generator I've gone back to a 1 argument version of this function * (dst.msk = arg), rather than the semantically cleaner (dst = SEL * arg0, arg1, msk) * * That means this is the only instruction which doesn't write a full * 4 dwords out. This would make such a program harder to analyse, * but it looks like analysis is going to take place on a higher level * anyway. */ static void do_MSK( struct arb_vp_machine *m, union instruction op ) { GLfloat *dst = m->File[0][op.msk.dst]; const GLfloat *arg = m->File[op.msk.file][op.msk.idx]; if (op.msk.mask & 0x1) dst[0] = arg[0]; if (op.msk.mask & 0x2) dst[1] = arg[1]; if (op.msk.mask & 0x4) dst[2] = arg[2]; if (op.msk.mask & 0x8) dst[3] = arg[3]; } static void do_PRT( struct arb_vp_machine *m, union instruction op ) { const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; _mesa_printf("%d: %f %f %f %f\n", m->vtx_nr, arg0[0], arg0[1], arg0[2], arg0[3]); } /** * The traditional ALU and texturing instructions. All operate on * internal registers and ignore write masks and swizzling issues. */ static void do_ABS( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = (arg0[0] < 0.0) ? -arg0[0] : arg0[0]; result[1] = (arg0[1] < 0.0) ? -arg0[1] : arg0[1]; result[2] = (arg0[2] < 0.0) ? -arg0[2] : arg0[2]; result[3] = (arg0[3] < 0.0) ? -arg0[3] : arg0[3]; } static void do_ADD( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = arg0[0] + arg1[0]; result[1] = arg0[1] + arg1[1]; result[2] = arg0[2] + arg1[2]; result[3] = arg0[3] + arg1[3]; } static void do_DP3( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] * arg1[0] + arg0[1] * arg1[1] + arg0[2] * arg1[2]); PUFF(result); } static void do_DP4( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] * arg1[0] + arg0[1] * arg1[1] + arg0[2] * arg1[2] + arg0[3] * arg1[3]); PUFF(result); } static void do_DPH( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] * arg1[0] + arg0[1] * arg1[1] + arg0[2] * arg1[2] + 1.0 * arg1[3]); PUFF(result); } static void do_DST( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = 1.0F; result[1] = arg0[1] * arg1[1]; result[2] = arg0[2]; result[3] = arg1[3]; } /* Intended to be high precision: */ static void do_EX2( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = (GLfloat)ApproxExp2(arg0[0]); PUFF(result); } /* Allowed to be lower precision: */ static void do_EXP( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; GLfloat tmp = arg0[0]; GLfloat flr_tmp = FLOORF(tmp); GLfloat frac_tmp = tmp - flr_tmp; result[0] = LDEXPF(1.0, (int)flr_tmp); result[1] = frac_tmp; result[2] = LDEXPF(rough_approx_log2_0_1(frac_tmp), (int)flr_tmp); result[3] = 1.0F; } static void do_FLR( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = FLOORF(arg0[0]); result[1] = FLOORF(arg0[1]); result[2] = FLOORF(arg0[2]); result[3] = FLOORF(arg0[3]); } static void do_FRC( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = arg0[0] - FLOORF(arg0[0]); result[1] = arg0[1] - FLOORF(arg0[1]); result[2] = arg0[2] - FLOORF(arg0[2]); result[3] = arg0[3] - FLOORF(arg0[3]); } /* High precision log base 2: */ static void do_LG2( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = ApproxLog2(arg0[0]); PUFF(result); } static void do_LIT( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; GLfloat tmp[4]; tmp[0] = 1.0; tmp[1] = 0.0; tmp[2] = 0.0; tmp[3] = 1.0; if (arg0[0] > 0.0) { tmp[1] = arg0[0]; if (arg0[1] > 0.0) { tmp[2] = RoughApproxPower(arg0[1], arg0[3]); } } COPY_4V(result, tmp); } /* Intended to allow a lower precision than required for LG2 above. */ static void do_LOG( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; GLfloat tmp = FABSF(arg0[0]); int exponent; #ifdef _WIN32 GLfloat mantissa = (GLfloat) frexp((double)tmp, &exponent); #else GLfloat mantissa = frexpf(tmp, &exponent); #endif result[0] = (GLfloat) (exponent - 1); result[1] = 2.0 * mantissa; /* map [.5, 1) -> [1, 2) */ result[2] = exponent + LOG2(mantissa); result[3] = 1.0; } static void do_MAX( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] > arg1[0]) ? arg0[0] : arg1[0]; result[1] = (arg0[1] > arg1[1]) ? arg0[1] : arg1[1]; result[2] = (arg0[2] > arg1[2]) ? arg0[2] : arg1[2]; result[3] = (arg0[3] > arg1[3]) ? arg0[3] : arg1[3]; } static void do_MIN( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] < arg1[0]) ? arg0[0] : arg1[0]; result[1] = (arg0[1] < arg1[1]) ? arg0[1] : arg1[1]; result[2] = (arg0[2] < arg1[2]) ? arg0[2] : arg1[2]; result[3] = (arg0[3] < arg1[3]) ? arg0[3] : arg1[3]; } static void do_MOV( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = arg0[0]; result[1] = arg0[1]; result[2] = arg0[2]; result[3] = arg0[3]; } static void do_MUL( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = arg0[0] * arg1[0]; result[1] = arg0[1] * arg1[1]; result[2] = arg0[2] * arg1[2]; result[3] = arg0[3] * arg1[3]; } /* Intended to be "high" precision */ static void do_POW( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (GLfloat)ApproxPower(arg0[0], arg1[0]); PUFF(result); } static void do_REL( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; GLuint idx = (op.alu.idx0 + (GLint)m->File[0][REG_ADDR][0]) & (MAX_NV_VERTEX_PROGRAM_PARAMS-1); const GLfloat *arg0 = m->File[op.alu.file0][idx]; result[0] = arg0[0]; result[1] = arg0[1]; result[2] = arg0[2]; result[3] = arg0[3]; } static void do_RCP( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = 1.0F / arg0[0]; PUFF(result); } static void do_RSQ( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; result[0] = INV_SQRTF(FABSF(arg0[0])); PUFF(result); } static void do_SGE( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] >= arg1[0]) ? 1.0F : 0.0F; result[1] = (arg0[1] >= arg1[1]) ? 1.0F : 0.0F; result[2] = (arg0[2] >= arg1[2]) ? 1.0F : 0.0F; result[3] = (arg0[3] >= arg1[3]) ? 1.0F : 0.0F; } static void do_SLT( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = (arg0[0] < arg1[0]) ? 1.0F : 0.0F; result[1] = (arg0[1] < arg1[1]) ? 1.0F : 0.0F; result[2] = (arg0[2] < arg1[2]) ? 1.0F : 0.0F; result[3] = (arg0[3] < arg1[3]) ? 1.0F : 0.0F; } static void do_SUB( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = arg0[0] - arg1[0]; result[1] = arg0[1] - arg1[1]; result[2] = arg0[2] - arg1[2]; result[3] = arg0[3] - arg1[3]; } static void do_XPD( struct arb_vp_machine *m, union instruction op ) { GLfloat *result = m->File[0][op.alu.dst]; const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0]; const GLfloat *arg1 = m->File[op.alu.file1][op.alu.idx1]; result[0] = arg0[1] * arg1[2] - arg0[2] * arg1[1]; result[1] = arg0[2] * arg1[0] - arg0[0] * arg1[2]; result[2] = arg0[0] * arg1[1] - arg0[1] * arg1[0]; } static void do_NOP( struct arb_vp_machine *m, union instruction op ) { } /* Some useful debugging functions: */ static void print_mask( GLuint mask ) { _mesa_printf("."); if (mask&0x1) _mesa_printf("x"); if (mask&0x2) _mesa_printf("y"); if (mask&0x4) _mesa_printf("z"); if (mask&0x8) _mesa_printf("w"); } static void print_reg( GLuint file, GLuint reg ) { static const char *reg_file[] = { "REG", "LOCAL_PARAM", "ENV_PARAM", "STATE_VAR", }; if (file == 0) { if (reg == REG_RES) _mesa_printf("RES"); else if (reg >= REG_ARG0 && reg <= REG_ARG1) _mesa_printf("ARG%d", reg - REG_ARG0); else if (reg >= REG_TMP0 && reg <= REG_TMP11) _mesa_printf("TMP%d", reg - REG_TMP0); else if (reg >= REG_IN0 && reg <= REG_IN31) _mesa_printf("IN%d", reg - REG_IN0); else if (reg >= REG_OUT0 && reg <= REG_OUT14) _mesa_printf("OUT%d", reg - REG_OUT0); else if (reg == REG_ADDR) _mesa_printf("ADDR"); else if (reg == REG_ID) _mesa_printf("ID"); else _mesa_printf("REG%d", reg); } else _mesa_printf("%s:%d", reg_file[file], reg); } static void print_RSW( union instruction op, const struct opcode_info *info ) { GLuint swz = op.rsw.swz; GLuint neg = op.rsw.neg; GLuint i; _mesa_printf("%s ", info->string); print_reg(0, op.rsw.dst); _mesa_printf(", "); print_reg(op.rsw.file0, op.rsw.idx0); _mesa_printf("."); for (i = 0; i < 4; i++, swz >>= 2) { const char *cswz = "xyzw"; if (neg & (1<string); print_reg(0, op.alu.dst); _mesa_printf(", "); print_reg(op.alu.file0, op.alu.idx0); if (info->nr_args > 1) { _mesa_printf(", "); print_reg(op.alu.file1, op.alu.idx1); } _mesa_printf("\n"); } static void print_MSK( union instruction op, const struct opcode_info *info ) { _mesa_printf("%s ", info->string); print_reg(0, op.msk.dst); print_mask(op.msk.mask); _mesa_printf(", "); print_reg(op.msk.file, op.msk.idx); _mesa_printf("\n"); } static void print_NOP( union instruction op, const struct opcode_info *info ) { } #define NOP 0 #define ALU 1 #define SWZ 2 static const struct opcode_info opcode_info[] = { { 1, "ABS", print_ALU }, { 2, "ADD", print_ALU }, { 1, "ARL", print_NOP }, { 2, "DP3", print_ALU }, { 2, "DP4", print_ALU }, { 2, "DPH", print_ALU }, { 2, "DST", print_ALU }, { 0, "END", print_NOP }, { 1, "EX2", print_ALU }, { 1, "EXP", print_ALU }, { 1, "FLR", print_ALU }, { 1, "FRC", print_ALU }, { 1, "LG2", print_ALU }, { 1, "LIT", print_ALU }, { 1, "LOG", print_ALU }, { 3, "MAD", print_NOP }, { 2, "MAX", print_ALU }, { 2, "MIN", print_ALU }, { 1, "MOV", print_ALU }, { 2, "MUL", print_ALU }, { 2, "POW", print_ALU }, { 1, "PRT", print_ALU }, /* PRINT */ { 1, "RCC", print_NOP }, { 1, "RCP", print_ALU }, { 1, "RSQ", print_ALU }, { 2, "SGE", print_ALU }, { 2, "SLT", print_ALU }, { 2, "SUB", print_ALU }, { 1, "SWZ", print_NOP }, { 2, "XPD", print_ALU }, { 1, "RSW", print_RSW }, { 2, "MSK", print_MSK }, { 1, "REL", print_ALU }, }; void _tnl_disassem_vba_insn( union instruction op ) { const struct opcode_info *info = &opcode_info[op.alu.opcode]; info->print( op, info ); } static void (* const opcode_func[])(struct arb_vp_machine *, union instruction) = { do_ABS, do_ADD, do_NOP, do_DP3, do_DP4, do_DPH, do_DST, do_NOP, do_EX2, do_EXP, do_FLR, do_FRC, do_LG2, do_LIT, do_LOG, do_NOP, do_MAX, do_MIN, do_MOV, do_MUL, do_POW, do_PRT, do_NOP, do_RCP, do_RSQ, do_SGE, do_SLT, do_SUB, do_RSW, do_XPD, do_RSW, do_MSK, do_REL, }; static union instruction *cvp_next_instruction( struct compilation *cp ) { union instruction *op = cp->csr++; op->dword = 0; return op; } static struct reg cvp_make_reg( GLuint file, GLuint idx ) { struct reg reg; reg.file = file; reg.idx = idx; return reg; } static struct reg cvp_emit_rel( struct compilation *cp, struct reg reg, struct reg tmpreg ) { union instruction *op = cvp_next_instruction(cp); op->alu.opcode = REL; op->alu.file0 = reg.file; op->alu.idx0 = reg.idx; op->alu.dst = tmpreg.idx; return tmpreg; } static struct reg cvp_load_reg( struct compilation *cp, GLuint file, GLuint index, GLuint rel, GLuint tmpidx ) { struct reg tmpreg = cvp_make_reg(FILE_REG, tmpidx); struct reg reg; switch (file) { case PROGRAM_TEMPORARY: return cvp_make_reg(FILE_REG, REG_TMP0 + index); case PROGRAM_INPUT: return cvp_make_reg(FILE_REG, REG_IN0 + index); case PROGRAM_OUTPUT: return cvp_make_reg(FILE_REG, REG_OUT0 + index); /* These two aren't populated by the parser? */ case PROGRAM_LOCAL_PARAM: reg = cvp_make_reg(FILE_LOCAL_PARAM, index); if (rel) return cvp_emit_rel(cp, reg, tmpreg); else return reg; case PROGRAM_ENV_PARAM: reg = cvp_make_reg(FILE_ENV_PARAM, index); if (rel) return cvp_emit_rel(cp, reg, tmpreg); else return reg; case PROGRAM_STATE_VAR: reg = cvp_make_reg(FILE_STATE_PARAM, index); if (rel) return cvp_emit_rel(cp, reg, tmpreg); else return reg; /* Invalid values: */ case PROGRAM_WRITE_ONLY: case PROGRAM_ADDRESS: default: assert(0); return tmpreg; /* can't happen */ } } static struct reg cvp_emit_arg( struct compilation *cp, const struct vp_src_register *src, GLuint arg ) { struct reg reg = cvp_load_reg( cp, src->File, src->Index, src->RelAddr, arg ); union instruction rsw, noop; /* Emit any necessary swizzling. */ rsw.dword = 0; rsw.rsw.neg = src->Negate ? WRITEMASK_XYZW : 0; rsw.rsw.swz = ((GET_SWZ(src->Swizzle, 0) << 0) | (GET_SWZ(src->Swizzle, 1) << 2) | (GET_SWZ(src->Swizzle, 2) << 4) | (GET_SWZ(src->Swizzle, 3) << 6)); noop.dword = 0; noop.rsw.neg = 0; noop.rsw.swz = RSW_NOOP; if (rsw.dword != noop.dword) { union instruction *op = cvp_next_instruction(cp); struct reg rsw_reg = cvp_make_reg(FILE_REG, REG_ARG0 + arg); op->dword = rsw.dword; op->rsw.opcode = RSW; op->rsw.file0 = reg.file; op->rsw.idx0 = reg.idx; op->rsw.dst = rsw_reg.idx; return rsw_reg; } else return reg; } static GLuint cvp_choose_result( struct compilation *cp, const struct vp_dst_register *dst, union instruction *fixup ) { GLuint mask = dst->WriteMask; GLuint idx; switch (dst->File) { case PROGRAM_TEMPORARY: idx = REG_TMP0 + dst->Index; break; case PROGRAM_OUTPUT: idx = REG_OUT0 + dst->Index; break; default: assert(0); return REG_RES; /* can't happen */ } /* Optimization: When writing (with a writemask) to an undefined * value for the first time, the writemask may be ignored. */ if (mask != WRITEMASK_XYZW && (cp->reg_active & (1 << idx))) { fixup->msk.opcode = MSK; fixup->msk.dst = idx; fixup->msk.file = FILE_REG; fixup->msk.idx = REG_RES; fixup->msk.mask = mask; cp->reg_active |= 1 << idx; return REG_RES; } else { fixup->dword = 0; cp->reg_active |= 1 << idx; return idx; } } static struct reg cvp_emit_rsw( struct compilation *cp, GLuint dst, struct reg src, GLuint neg, GLuint swz, GLboolean force) { struct reg retval; if (swz != RSW_NOOP || neg != 0) { union instruction *op = cvp_next_instruction(cp); op->rsw.opcode = RSW; op->rsw.dst = dst; op->rsw.file0 = src.file; op->rsw.idx0 = src.idx; op->rsw.neg = neg; op->rsw.swz = swz; retval.file = FILE_REG; retval.idx = dst; return retval; } else if (force) { /* Oops. Degenerate case: */ union instruction *op = cvp_next_instruction(cp); op->alu.opcode = VP_OPCODE_MOV; op->alu.dst = dst; op->alu.file0 = src.file; op->alu.idx0 = src.idx; retval.file = FILE_REG; retval.idx = dst; return retval; } else { return src; } } static void cvp_emit_inst( struct compilation *cp, const struct vp_instruction *inst ) { const struct opcode_info *info = &opcode_info[inst->Opcode]; union instruction *op; union instruction fixup; struct reg reg[3]; GLuint result, i; assert(sizeof(*op) == sizeof(GLuint)); /* Need to handle SWZ, ARL specially. */ switch (inst->Opcode) { /* Split into mul and add: */ case VP_OPCODE_MAD: result = cvp_choose_result( cp, &inst->DstReg, &fixup ); for (i = 0; i < 3; i++) reg[i] = cvp_emit_arg( cp, &inst->SrcReg[i], REG_ARG0+i ); op = cvp_next_instruction(cp); op->alu.opcode = VP_OPCODE_MUL; op->alu.file0 = reg[0].file; op->alu.idx0 = reg[0].idx; op->alu.file1 = reg[1].file; op->alu.idx1 = reg[1].idx; op->alu.dst = REG_ARG0; op = cvp_next_instruction(cp); op->alu.opcode = VP_OPCODE_ADD; op->alu.file0 = FILE_REG; op->alu.idx0 = REG_ARG0; op->alu.file1 = reg[2].file; op->alu.idx1 = reg[2].idx; op->alu.dst = result; if (result == REG_RES) { op = cvp_next_instruction(cp); op->dword = fixup.dword; } break; case VP_OPCODE_ARL: reg[0] = cvp_emit_arg( cp, &inst->SrcReg[0], REG_ARG0 ); op = cvp_next_instruction(cp); op->alu.opcode = VP_OPCODE_FLR; op->alu.dst = REG_ADDR; op->alu.file0 = reg[0].file; op->alu.idx0 = reg[0].idx; break; case VP_OPCODE_SWZ: { GLuint swz0 = 0, swz1 = 0; GLuint neg0 = 0, neg1 = 0; GLuint mask = 0; /* Translate 3-bit-per-element swizzle into two 2-bit swizzles, * one from the source register the other from a constant * {0,0,0,1}. */ for (i = 0; i < 4; i++) { GLuint swzelt = GET_SWZ(inst->SrcReg[0].Swizzle, i); if (swzelt >= SWIZZLE_ZERO) { neg0 |= inst->SrcReg[0].Negate & (1<SrcReg[0].Negate & (1<DstReg, &fixup ); reg[0].file = FILE_REG; reg[0].idx = REG_ID; reg[1] = cvp_emit_arg( cp, &inst->SrcReg[0], REG_ARG0 ); if (mask == WRITEMASK_XYZW) { cvp_emit_rsw(cp, result, reg[0], neg0, swz0, GL_TRUE); } else if (mask == 0) { cvp_emit_rsw(cp, result, reg[1], neg1, swz1, GL_TRUE); } else { cvp_emit_rsw(cp, result, reg[0], neg0, swz0, GL_TRUE); reg[1] = cvp_emit_rsw(cp, REG_ARG0, reg[1], neg1, swz1, GL_FALSE); op = cvp_next_instruction(cp); op->msk.opcode = MSK; op->msk.dst = result; op->msk.file = reg[1].file; op->msk.idx = reg[1].idx; op->msk.mask = mask; } if (result == REG_RES) { op = cvp_next_instruction(cp); op->dword = fixup.dword; } break; } case VP_OPCODE_END: break; default: result = cvp_choose_result( cp, &inst->DstReg, &fixup ); for (i = 0; i < info->nr_args; i++) reg[i] = cvp_emit_arg( cp, &inst->SrcReg[i], REG_ARG0 + i ); op = cvp_next_instruction(cp); op->alu.opcode = inst->Opcode; op->alu.file0 = reg[0].file; op->alu.idx0 = reg[0].idx; op->alu.file1 = reg[1].file; op->alu.idx1 = reg[1].idx; op->alu.dst = result; if (result == REG_RES) { op = cvp_next_instruction(cp); op->dword = fixup.dword; } break; } } static void free_tnl_data( struct vertex_program *program ) { struct tnl_compiled_program *p = program->TnlData; if (p->compiled_func) _mesa_free((void *)p->compiled_func); _mesa_free(p); program->TnlData = NULL; } static void compile_vertex_program( struct vertex_program *program, GLboolean try_codegen ) { struct compilation cp; struct tnl_compiled_program *p = CALLOC_STRUCT(tnl_compiled_program); GLuint i; if (program->TnlData) free_tnl_data( program ); program->TnlData = p; /* Initialize cp. Note that ctx and VB aren't used in compilation * so we don't have to worry about statechanges: */ memset(&cp, 0, sizeof(cp)); cp.csr = p->instructions; /* Compile instructions: */ for (i = 0; i < program->Base.NumInstructions; i++) { cvp_emit_inst(&cp, &program->Instructions[i]); } /* Finish up: */ p->nr_instructions = cp.csr - p->instructions; /* Print/disassemble: */ if (DISASSEM) { for (i = 0; i < p->nr_instructions; i++) { _tnl_disassem_vba_insn(p->instructions[i]); } _mesa_printf("\n\n"); } #ifdef USE_SSE_ASM if (try_codegen) _tnl_sse_codegen_vertex_program(p); #endif } /* ---------------------------------------------------------------------- * Execution */ static void userclip( GLcontext *ctx, GLvector4f *clip, GLubyte *clipmask, GLubyte *clipormask, GLubyte *clipandmask ) { GLuint p; for (p = 0; p < ctx->Const.MaxClipPlanes; p++) { if (ctx->Transform.ClipPlanesEnabled & (1 << p)) { GLuint nr, i; const GLfloat a = ctx->Transform._ClipUserPlane[p][0]; const GLfloat b = ctx->Transform._ClipUserPlane[p][1]; const GLfloat c = ctx->Transform._ClipUserPlane[p][2]; const GLfloat d = ctx->Transform._ClipUserPlane[p][3]; GLfloat *coord = (GLfloat *)clip->data; GLuint stride = clip->stride; GLuint count = clip->count; for (nr = 0, i = 0 ; i < count ; i++) { GLfloat dp = (coord[0] * a + coord[1] * b + coord[2] * c + coord[3] * d); if (dp < 0) { nr++; clipmask[i] |= CLIP_USER_BIT; } STRIDE_F(coord, stride); } if (nr > 0) { *clipormask |= CLIP_USER_BIT; if (nr == count) { *clipandmask |= CLIP_USER_BIT; return; } } } } } static GLboolean do_ndc_cliptest( struct arb_vp_machine *m ) { GLcontext *ctx = m->ctx; TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = m->VB; /* Cliptest and perspective divide. Clip functions must clear * the clipmask. */ m->ormask = 0; m->andmask = CLIP_ALL_BITS; if (tnl->NeedNdcCoords) { VB->NdcPtr = _mesa_clip_tab[VB->ClipPtr->size]( VB->ClipPtr, &m->ndcCoords, m->clipmask, &m->ormask, &m->andmask ); } else { VB->NdcPtr = NULL; _mesa_clip_np_tab[VB->ClipPtr->size]( VB->ClipPtr, NULL, m->clipmask, &m->ormask, &m->andmask ); } if (m->andmask) { /* All vertices are outside the frustum */ return GL_FALSE; } /* Test userclip planes. This contributes to VB->ClipMask. */ if (ctx->Transform.ClipPlanesEnabled && !ctx->VertexProgram._Enabled) { userclip( ctx, VB->ClipPtr, m->clipmask, &m->ormask, &m->andmask ); if (m->andmask) { return GL_FALSE; } } VB->ClipAndMask = m->andmask; VB->ClipOrMask = m->ormask; VB->ClipMask = m->clipmask; return GL_TRUE; } static INLINE void call_func( struct tnl_compiled_program *p, struct arb_vp_machine *m ) { p->compiled_func(m); } /** * Execute the given vertex program. * * TODO: Integrate the t_vertex.c code here, to build machine vertices * directly at this point. * * TODO: Eliminate the VB struct entirely and just use * struct arb_vertex_machine. */ static GLboolean run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage) { struct vertex_program *program = (ctx->VertexProgram._Enabled ? ctx->VertexProgram.Current : ctx->_TnlProgram); struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; struct arb_vp_machine *m = ARB_VP_MACHINE(stage); struct tnl_compiled_program *p; GLuint i, j, outputs; if (!program || program->IsNVProgram) return GL_TRUE; if (program->Parameters) { _mesa_load_state_parameters(ctx, program->Parameters); } p = (struct tnl_compiled_program *)program->TnlData; assert(p); m->nr_inputs = m->nr_outputs = 0; for (i = 0; i < _TNL_ATTRIB_MAX; i++) { if (program->InputsRead & (1<nr_inputs++; m->input[j].idx = i; m->input[j].data = (GLfloat *)m->VB->AttribPtr[i]->data; m->input[j].stride = m->VB->AttribPtr[i]->stride; m->input[j].size = m->VB->AttribPtr[i]->size; ASSIGN_4V(m->File[0][REG_IN0 + i], 0, 0, 0, 1); } } for (i = 0; i < 15; i++) { if (program->OutputsWritten & (1<nr_outputs++; m->output[j].idx = i; m->output[j].data = (GLfloat *)m->attribs[i].data; } } /* Run the actual program: */ for (m->vtx_nr = 0; m->vtx_nr < VB->Count; m->vtx_nr++) { for (j = 0; j < m->nr_inputs; j++) { GLuint idx = REG_IN0 + m->input[j].idx; switch (m->input[j].size) { case 4: m->File[0][idx][3] = m->input[j].data[3]; case 3: m->File[0][idx][2] = m->input[j].data[2]; case 2: m->File[0][idx][1] = m->input[j].data[1]; case 1: m->File[0][idx][0] = m->input[j].data[0]; } STRIDE_F(m->input[j].data, m->input[j].stride); } if (p->compiled_func) { call_func( p, m ); } else { for (j = 0; j < p->nr_instructions; j++) { union instruction inst = p->instructions[j]; opcode_func[inst.alu.opcode]( m, inst ); } } for (j = 0; j < m->nr_outputs; j++) { GLuint idx = REG_OUT0 + m->output[j].idx; m->output[j].data[0] = m->File[0][idx][0]; m->output[j].data[1] = m->File[0][idx][1]; m->output[j].data[2] = m->File[0][idx][2]; m->output[j].data[3] = m->File[0][idx][3]; m->output[j].data += 4; } } /* Setup the VB pointers so that the next pipeline stages get * their data from the right place (the program output arrays). * * TODO: 1) Have tnl use these RESULT values for outputs rather * than trying to shoe-horn inputs and outputs into one set of * values. * * TODO: 2) Integrate t_vertex.c so that we just go straight ahead * and build machine vertices here. */ VB->ClipPtr = &m->attribs[VERT_RESULT_HPOS]; VB->ClipPtr->count = VB->Count; outputs = program->OutputsWritten; if (outputs & (1<ColorPtr[0] = &m->attribs[VERT_RESULT_COL0]; VB->AttribPtr[VERT_ATTRIB_COLOR0] = VB->ColorPtr[0]; } if (outputs & (1<ColorPtr[1] = &m->attribs[VERT_RESULT_BFC0]; } if (outputs & (1<SecondaryColorPtr[0] = &m->attribs[VERT_RESULT_COL1]; VB->AttribPtr[VERT_ATTRIB_COLOR1] = VB->SecondaryColorPtr[0]; } if (outputs & (1<SecondaryColorPtr[1] = &m->attribs[VERT_RESULT_BFC1]; } if (outputs & (1<FogCoordPtr = &m->attribs[VERT_RESULT_FOGC]; VB->AttribPtr[VERT_ATTRIB_FOG] = VB->FogCoordPtr; } if (outputs & (1<PointSizePtr = &m->attribs[VERT_RESULT_PSIZ]; VB->AttribPtr[_TNL_ATTRIB_POINTSIZE] = &m->attribs[VERT_RESULT_PSIZ]; } for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { if (outputs & (1<<(VERT_RESULT_TEX0+i))) { VB->TexCoordPtr[i] = &m->attribs[VERT_RESULT_TEX0 + i]; VB->AttribPtr[VERT_ATTRIB_TEX0+i] = VB->TexCoordPtr[i]; } } #if 0 for (i = 0; i < VB->Count; i++) { printf("Out %d: %f %f %f %f %f %f %f %f\n", i, VEC_ELT(VB->ClipPtr, GLfloat, i)[0], VEC_ELT(VB->ClipPtr, GLfloat, i)[1], VEC_ELT(VB->ClipPtr, GLfloat, i)[2], VEC_ELT(VB->ClipPtr, GLfloat, i)[3], VEC_ELT(VB->TexCoordPtr[0], GLfloat, i)[0], VEC_ELT(VB->TexCoordPtr[0], GLfloat, i)[1], VEC_ELT(VB->TexCoordPtr[0], GLfloat, i)[2], VEC_ELT(VB->TexCoordPtr[0], GLfloat, i)[3]); } #endif /* Perform NDC and cliptest operations: */ return do_ndc_cliptest(m); } static void validate_vertex_program( GLcontext *ctx, struct tnl_pipeline_stage *stage ) { struct arb_vp_machine *m = ARB_VP_MACHINE(stage); struct vertex_program *program = (ctx->VertexProgram._Enabled ? ctx->VertexProgram.Current : 0); if (!program && ctx->_MaintainTnlProgram) { program = ctx->_TnlProgram; } if (program) { if (!program->TnlData) compile_vertex_program( program, m->try_codegen ); /* Grab the state GL state and put into registers: */ m->File[FILE_LOCAL_PARAM] = program->Base.LocalParams; m->File[FILE_ENV_PARAM] = ctx->VertexProgram.Parameters; /* GL_NV_vertex_programs can't reference GL state */ if (program->Parameters) m->File[FILE_STATE_PARAM] = program->Parameters->ParameterValues; else m->File[FILE_STATE_PARAM] = NULL; } } /** * Called the first time stage->run is called. In effect, don't * allocate data until the first time the stage is run. */ static GLboolean init_vertex_program( GLcontext *ctx, struct tnl_pipeline_stage *stage ) { TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &(tnl->vb); struct arb_vp_machine *m; const GLuint size = VB->Size; GLuint i; stage->privatePtr = _mesa_malloc(sizeof(*m)); m = ARB_VP_MACHINE(stage); if (!m) return GL_FALSE; /* arb_vertex_machine struct should subsume the VB: */ m->VB = VB; m->ctx = ctx; m->File[0] = ALIGN_MALLOC(REG_MAX * sizeof(GLfloat) * 4, 16); /* Initialize regs where necessary: */ ASSIGN_4V(m->File[0][REG_ID], 0, 0, 0, 1); ASSIGN_4V(m->File[0][REG_ONES], 1, 1, 1, 1); ASSIGN_4V(m->File[0][REG_SWZ], -1, 1, 0, 0); ASSIGN_4V(m->File[0][REG_NEG], -1, -1, -1, -1); ASSIGN_4V(m->File[0][REG_LIT], 1, 0, 0, 1); ASSIGN_4V(m->File[0][REG_LIT2], 1, .5, .2, 1); /* debug value */ if (_mesa_getenv("MESA_EXPERIMENTAL")) m->try_codegen = 1; /* Allocate arrays of vertex output values */ for (i = 0; i < VERT_RESULT_MAX; i++) { _mesa_vector4f_alloc( &m->attribs[i], 0, size, 32 ); m->attribs[i].size = 4; } /* a few other misc allocations */ _mesa_vector4f_alloc( &m->ndcCoords, 0, size, 32 ); m->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 ); if (ctx->_MaintainTnlProgram) _mesa_allow_light_in_model( ctx, GL_FALSE ); m->fpucntl_rnd_neg = RND_NEG_FPU; /* const value */ m->fpucntl_restore = RESTORE_FPU; /* const value */ return GL_TRUE; } /** * Destructor for this pipeline stage. */ static void dtr( struct tnl_pipeline_stage *stage ) { struct arb_vp_machine *m = ARB_VP_MACHINE(stage); if (m) { GLuint i; /* free the vertex program result arrays */ for (i = 0; i < VERT_RESULT_MAX; i++) _mesa_vector4f_free( &m->attribs[i] ); /* free misc arrays */ _mesa_vector4f_free( &m->ndcCoords ); ALIGN_FREE( m->clipmask ); ALIGN_FREE( m->File[0] ); _mesa_free( m ); stage->privatePtr = NULL; } } /** * Public description of this pipeline stage. */ const struct tnl_pipeline_stage _tnl_arb_vertex_program_stage = { "vertex-program", NULL, /* private_data */ init_vertex_program, /* create */ dtr, /* destroy */ validate_vertex_program, /* validate */ run_arb_vertex_program /* run */ };