From 24a692ce832161d3b794110dd82b1508d38a0887 Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 12 Sep 2011 08:58:44 +0200 Subject: git update 12 sep 2011 --- mesalib/src/mesa/program/ir_to_mesa.cpp | 17 +- mesalib/src/mesa/program/nvvertparse.c | 2918 +++++++++++++++---------------- 2 files changed, 1473 insertions(+), 1462 deletions(-) (limited to 'mesalib/src/mesa/program') diff --git a/mesalib/src/mesa/program/ir_to_mesa.cpp b/mesalib/src/mesa/program/ir_to_mesa.cpp index 9813c4ae8..69a84de39 100644 --- a/mesalib/src/mesa/program/ir_to_mesa.cpp +++ b/mesalib/src/mesa/program/ir_to_mesa.cpp @@ -2156,6 +2156,8 @@ ir_to_mesa_visitor::visit(ir_texture *ir) break; } + const glsl_type *sampler_type = ir->sampler->type; + if (ir->projector) { if (opcode == OPCODE_TEX) { /* Slot the projector in as the last component of the coord. */ @@ -2187,6 +2189,9 @@ ir_to_mesa_visitor::visit(ir_texture *ir) tmp_src = get_temp(glsl_type::vec4_type); dst_reg tmp_dst = dst_reg(tmp_src); + /* Projective division not allowed for array samplers. */ + assert(!sampler_type->sampler_array); + tmp_dst.writemask = WRITEMASK_Z; emit(ir, OPCODE_MOV, tmp_dst, this->result); @@ -2211,7 +2216,15 @@ ir_to_mesa_visitor::visit(ir_texture *ir) * coord. */ ir->shadow_comparitor->accept(this); - coord_dst.writemask = WRITEMASK_Z; + + /* XXX This will need to be updated for cubemap array samplers. */ + if (sampler_type->sampler_dimensionality == GLSL_SAMPLER_DIM_2D && + sampler_type->sampler_array) { + coord_dst.writemask = WRITEMASK_W; + } else { + coord_dst.writemask = WRITEMASK_Z; + } + emit(ir, OPCODE_MOV, coord_dst, this->result); coord_dst.writemask = WRITEMASK_XYZW; } @@ -2235,8 +2248,6 @@ ir_to_mesa_visitor::visit(ir_texture *ir) this->shader_program, this->prog); - const glsl_type *sampler_type = ir->sampler->type; - switch (sampler_type->sampler_dimensionality) { case GLSL_SAMPLER_DIM_1D: inst->tex_target = (sampler_type->sampler_array) diff --git a/mesalib/src/mesa/program/nvvertparse.c b/mesalib/src/mesa/program/nvvertparse.c index 8f7199a99..91fe2c48b 100644 --- a/mesalib/src/mesa/program/nvvertparse.c +++ b/mesalib/src/mesa/program/nvvertparse.c @@ -1,1459 +1,1459 @@ -/* - * Mesa 3-D graphics library - * Version: 6.5.2 - * - * Copyright (C) 1999-2006 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 nvvertparse.c - * NVIDIA vertex program parser. - * \author Brian Paul - */ - -/* - * Regarding GL_NV_vertex_program, GL_NV_vertex_program1_1: - * - * Portions of this software may use or implement intellectual - * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims - * any and all warranties with respect to such intellectual property, - * including any use thereof or modifications thereto. - */ - -#include "main/glheader.h" -#include "main/context.h" -#include "main/imports.h" -#include "main/nvprogram.h" -#include "nvvertparse.h" -#include "prog_instruction.h" -#include "prog_parameter.h" -#include "prog_print.h" -#include "program.h" - - -/** - * Current parsing state. This structure is passed among the parsing - * functions and keeps track of the current parser position and various - * program attributes. - */ -struct parse_state { - struct gl_context *ctx; - const GLubyte *start; - const GLubyte *pos; - const GLubyte *curLine; - GLboolean isStateProgram; - GLboolean isPositionInvariant; - GLboolean isVersion1_1; - GLbitfield inputsRead; - GLbitfield outputsWritten; - GLboolean anyProgRegsWritten; - GLboolean indirectRegisterFiles; - GLuint numInst; /* number of instructions parsed */ -}; - - -/* - * Called whenever we find an error during parsing. - */ -static void -record_error(struct parse_state *parseState, const char *msg, int lineNo) -{ -#ifdef DEBUG - GLint line, column; - const GLubyte *lineStr; - lineStr = _mesa_find_line_column(parseState->start, - parseState->pos, &line, &column); - _mesa_debug(parseState->ctx, - "nvfragparse.c(%d): line %d, column %d:%s (%s)\n", - lineNo, line, column, (char *) lineStr, msg); - free((void *) lineStr); -#else - (void) lineNo; -#endif - - /* Check that no error was already recorded. Only record the first one. */ - if (parseState->ctx->Program.ErrorString[0] == 0) { - _mesa_set_program_error(parseState->ctx, - parseState->pos - parseState->start, - msg); - } -} - - -#define RETURN_ERROR \ -do { \ - record_error(parseState, "Unexpected end of input.", __LINE__); \ - return GL_FALSE; \ -} while(0) - -#define RETURN_ERROR1(msg) \ -do { \ - record_error(parseState, msg, __LINE__); \ - return GL_FALSE; \ -} while(0) - -#define RETURN_ERROR2(msg1, msg2) \ -do { \ - char err[1000]; \ - sprintf(err, "%s %s", msg1, msg2); \ - record_error(parseState, err, __LINE__); \ - return GL_FALSE; \ -} while(0) - - - - - -static GLboolean IsLetter(GLubyte b) -{ - return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z'); -} - - -static GLboolean IsDigit(GLubyte b) -{ - return b >= '0' && b <= '9'; -} - - -static GLboolean IsWhitespace(GLubyte b) -{ - return b == ' ' || b == '\t' || b == '\n' || b == '\r'; -} - - -/** - * Starting at 'str' find the next token. A token can be an integer, - * an identifier or punctuation symbol. - * \return <= 0 we found an error, else, return number of characters parsed. - */ -static GLint -GetToken(struct parse_state *parseState, GLubyte *token) -{ - const GLubyte *str = parseState->pos; - GLint i = 0, j = 0; - - token[0] = 0; - - /* skip whitespace and comments */ - while (str[i] && (IsWhitespace(str[i]) || str[i] == '#')) { - if (str[i] == '#') { - /* skip comment */ - while (str[i] && (str[i] != '\n' && str[i] != '\r')) { - i++; - } - if (str[i] == '\n' || str[i] == '\r') - parseState->curLine = str + i + 1; - } - else { - /* skip whitespace */ - if (str[i] == '\n' || str[i] == '\r') - parseState->curLine = str + i + 1; - i++; - } - } - - if (str[i] == 0) - return -i; - - /* try matching an integer */ - while (str[i] && IsDigit(str[i])) { - token[j++] = str[i++]; - } - if (j > 0 || !str[i]) { - token[j] = 0; - return i; - } - - /* try matching an identifier */ - if (IsLetter(str[i])) { - while (str[i] && (IsLetter(str[i]) || IsDigit(str[i]))) { - token[j++] = str[i++]; - } - token[j] = 0; - return i; - } - - /* punctuation character */ - if (str[i]) { - token[0] = str[i++]; - token[1] = 0; - return i; - } - - /* end of input */ - token[0] = 0; - return i; -} - - -/** - * Get next token from input stream and increment stream pointer past token. - */ -static GLboolean -Parse_Token(struct parse_state *parseState, GLubyte *token) -{ - GLint i; - i = GetToken(parseState, token); - if (i <= 0) { - parseState->pos += (-i); - return GL_FALSE; - } - parseState->pos += i; - return GL_TRUE; -} - - -/** - * Get next token from input stream but don't increment stream pointer. - */ -static GLboolean -Peek_Token(struct parse_state *parseState, GLubyte *token) -{ - GLint i, len; - i = GetToken(parseState, token); - if (i <= 0) { - parseState->pos += (-i); - return GL_FALSE; - } - len = (GLint) strlen((const char *) token); - parseState->pos += (i - len); - return GL_TRUE; -} - - -/** - * Try to match 'pattern' as the next token after any whitespace/comments. - * Advance the current parsing position only if we match the pattern. - * \return GL_TRUE if pattern is matched, GL_FALSE otherwise. - */ -static GLboolean -Parse_String(struct parse_state *parseState, const char *pattern) -{ - const GLubyte *m; - GLint i; - - /* skip whitespace and comments */ - while (IsWhitespace(*parseState->pos) || *parseState->pos == '#') { - if (*parseState->pos == '#') { - while (*parseState->pos && (*parseState->pos != '\n' && *parseState->pos != '\r')) { - parseState->pos += 1; - } - if (*parseState->pos == '\n' || *parseState->pos == '\r') - parseState->curLine = parseState->pos + 1; - } - else { - /* skip whitespace */ - if (*parseState->pos == '\n' || *parseState->pos == '\r') - parseState->curLine = parseState->pos + 1; - parseState->pos += 1; - } - } - - /* Try to match the pattern */ - m = parseState->pos; - for (i = 0; pattern[i]; i++) { - if (*m != (GLubyte) pattern[i]) - return GL_FALSE; - m += 1; - } - parseState->pos = m; - - return GL_TRUE; /* success */ -} - - -/**********************************************************************/ - -static const char *InputRegisters[MAX_NV_VERTEX_PROGRAM_INPUTS + 1] = { - "OPOS", "WGHT", "NRML", "COL0", "COL1", "FOGC", "6", "7", - "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL -}; - -static const char *OutputRegisters[MAX_NV_VERTEX_PROGRAM_OUTPUTS + 1] = { - "HPOS", "COL0", "COL1", "FOGC", - "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", - "PSIZ", "BFC0", "BFC1", NULL -}; - - - -/** - * Parse a temporary register: Rnn - */ -static GLboolean -Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum) -{ - GLubyte token[100]; - - /* Should be 'R##' */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - if (token[0] != 'R') - RETURN_ERROR1("Expected R##"); - - if (IsDigit(token[1])) { - GLint reg = atoi((char *) (token + 1)); - if (reg >= MAX_NV_VERTEX_PROGRAM_TEMPS) - RETURN_ERROR1("Bad temporary register name"); - *tempRegNum = reg; - } - else { - RETURN_ERROR1("Bad temporary register name"); - } - - return GL_TRUE; -} - - -/** - * Parse address register "A0.x" - */ -static GLboolean -Parse_AddrReg(struct parse_state *parseState) -{ - /* match 'A0' */ - if (!Parse_String(parseState, "A0")) - RETURN_ERROR; - - /* match '.' */ - if (!Parse_String(parseState, ".")) - RETURN_ERROR; - - /* match 'x' */ - if (!Parse_String(parseState, "x")) - RETURN_ERROR; - - return GL_TRUE; -} - - -/** - * Parse absolute program parameter register "c[##]" - */ -static GLboolean -Parse_AbsParamReg(struct parse_state *parseState, GLint *regNum) -{ - GLubyte token[100]; - - if (!Parse_String(parseState, "c")) - RETURN_ERROR; - - if (!Parse_String(parseState, "[")) - RETURN_ERROR; - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (IsDigit(token[0])) { - /* a numbered program parameter register */ - GLint reg = atoi((char *) token); - if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS) - RETURN_ERROR1("Bad program parameter number"); - *regNum = reg; - } - else { - RETURN_ERROR; - } - - if (!Parse_String(parseState, "]")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_ParamReg(struct parse_state *parseState, struct prog_src_register *srcReg) -{ - GLubyte token[100]; - - if (!Parse_String(parseState, "c")) - RETURN_ERROR; - - if (!Parse_String(parseState, "[")) - RETURN_ERROR; - - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - if (IsDigit(token[0])) { - /* a numbered program parameter register */ - GLint reg; - (void) Parse_Token(parseState, token); - reg = atoi((char *) token); - if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS) - RETURN_ERROR1("Bad program parameter number"); - srcReg->File = PROGRAM_ENV_PARAM; - srcReg->Index = reg; - } - else if (strcmp((const char *) token, "A0") == 0) { - /* address register "A0.x" */ - if (!Parse_AddrReg(parseState)) - RETURN_ERROR; - - srcReg->RelAddr = GL_TRUE; - srcReg->File = PROGRAM_ENV_PARAM; - parseState->indirectRegisterFiles |= (1 << srcReg->File); - /* Look for +/-N offset */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - if (token[0] == '-' || token[0] == '+') { - const GLubyte sign = token[0]; - (void) Parse_Token(parseState, token); /* consume +/- */ - - /* an integer should be next */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (IsDigit(token[0])) { - const GLint k = atoi((char *) token); - if (sign == '-') { - if (k > 64) - RETURN_ERROR1("Bad address offset"); - srcReg->Index = -k; - } - else { - if (k > 63) - RETURN_ERROR1("Bad address offset"); - srcReg->Index = k; - } - } - else { - RETURN_ERROR; - } - } - else { - /* probably got a ']', catch it below */ - } - } - else { - RETURN_ERROR; - } - - /* Match closing ']' */ - if (!Parse_String(parseState, "]")) - RETURN_ERROR; - - return GL_TRUE; -} - - -/** - * Parse v[#] or v[] - */ -static GLboolean -Parse_AttribReg(struct parse_state *parseState, GLint *tempRegNum) -{ - GLubyte token[100]; - GLint j; - - /* Match 'v' */ - if (!Parse_String(parseState, "v")) - RETURN_ERROR; - - /* Match '[' */ - if (!Parse_String(parseState, "[")) - RETURN_ERROR; - - /* match number or named register */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (parseState->isStateProgram && token[0] != '0') - RETURN_ERROR1("Only v[0] accessible in vertex state programs"); - - if (IsDigit(token[0])) { - GLint reg = atoi((char *) token); - if (reg >= MAX_NV_VERTEX_PROGRAM_INPUTS) - RETURN_ERROR1("Bad vertex attribute register name"); - *tempRegNum = reg; - } - else { - for (j = 0; InputRegisters[j]; j++) { - if (strcmp((const char *) token, InputRegisters[j]) == 0) { - *tempRegNum = j; - break; - } - } - if (!InputRegisters[j]) { - /* unknown input register label */ - RETURN_ERROR2("Bad register name", token); - } - } - - /* Match '[' */ - if (!Parse_String(parseState, "]")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum) -{ - GLubyte token[100]; - GLint start, j; - - /* Match 'o' */ - if (!Parse_String(parseState, "o")) - RETURN_ERROR; - - /* Match '[' */ - if (!Parse_String(parseState, "[")) - RETURN_ERROR; - - /* Get output reg name */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (parseState->isPositionInvariant) - start = 1; /* skip HPOS register name */ - else - start = 0; - - /* try to match an output register name */ - for (j = start; OutputRegisters[j]; j++) { - if (strcmp((const char *) token, OutputRegisters[j]) == 0) { - *outputRegNum = j; - break; - } - } - if (!OutputRegisters[j]) - RETURN_ERROR1("Unrecognized output register name"); - - /* Match ']' */ - if (!Parse_String(parseState, "]")) - RETURN_ERROR1("Expected ]"); - - return GL_TRUE; -} - - -static GLboolean -Parse_MaskedDstReg(struct parse_state *parseState, struct prog_dst_register *dstReg) -{ - GLubyte token[100]; - GLint idx; - - /* Dst reg can be R or o[n] */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - if (token[0] == 'R') { - /* a temporary register */ - dstReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else if (!parseState->isStateProgram && token[0] == 'o') { - /* an output register */ - dstReg->File = PROGRAM_OUTPUT; - if (!Parse_OutputReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else if (parseState->isStateProgram && token[0] == 'c' && - parseState->isStateProgram) { - /* absolute program parameter register */ - /* Only valid for vertex state programs */ - dstReg->File = PROGRAM_ENV_PARAM; - if (!Parse_AbsParamReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else { - RETURN_ERROR1("Bad destination register name"); - } - - /* Parse optional write mask */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - if (token[0] == '.') { - /* got a mask */ - GLint k = 0; - - if (!Parse_String(parseState, ".")) - RETURN_ERROR; - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - dstReg->WriteMask = 0; - - if (token[k] == 'x') { - dstReg->WriteMask |= WRITEMASK_X; - k++; - } - if (token[k] == 'y') { - dstReg->WriteMask |= WRITEMASK_Y; - k++; - } - if (token[k] == 'z') { - dstReg->WriteMask |= WRITEMASK_Z; - k++; - } - if (token[k] == 'w') { - dstReg->WriteMask |= WRITEMASK_W; - k++; - } - if (k == 0) { - RETURN_ERROR1("Bad writemask character"); - } - return GL_TRUE; - } - else { - dstReg->WriteMask = WRITEMASK_XYZW; - return GL_TRUE; - } -} - - -static GLboolean -Parse_SwizzleSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg) -{ - GLubyte token[100]; - GLint idx; - - srcReg->RelAddr = GL_FALSE; - - /* check for '-' */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - if (token[0] == '-') { - (void) Parse_String(parseState, "-"); - srcReg->Negate = NEGATE_XYZW; - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - } - else { - srcReg->Negate = NEGATE_NONE; - } - - /* Src reg can be R, c[n], c[n +/- offset], or a named vertex attrib */ - if (token[0] == 'R') { - srcReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'c') { - if (!Parse_ParamReg(parseState, srcReg)) - RETURN_ERROR; - } - else if (token[0] == 'v') { - srcReg->File = PROGRAM_INPUT; - if (!Parse_AttribReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else { - RETURN_ERROR2("Bad source register name", token); - } - - /* init swizzle fields */ - srcReg->Swizzle = SWIZZLE_NOOP; - - /* Look for optional swizzle suffix */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - if (token[0] == '.') { - (void) Parse_String(parseState, "."); /* consume . */ - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (token[1] == 0) { - /* single letter swizzle */ - if (token[0] == 'x') - srcReg->Swizzle = SWIZZLE_XXXX; - else if (token[0] == 'y') - srcReg->Swizzle = SWIZZLE_YYYY; - else if (token[0] == 'z') - srcReg->Swizzle = SWIZZLE_ZZZZ; - else if (token[0] == 'w') - srcReg->Swizzle = SWIZZLE_WWWW; - else - RETURN_ERROR1("Expected x, y, z, or w"); - } - else { - /* 2, 3 or 4-component swizzle */ - GLint k; - - srcReg->Swizzle = 0; - - for (k = 0; token[k] && k < 5; k++) { - if (token[k] == 'x') - srcReg->Swizzle |= 0 << (k*3); - else if (token[k] == 'y') - srcReg->Swizzle |= 1 << (k*3); - else if (token[k] == 'z') - srcReg->Swizzle |= 2 << (k*3); - else if (token[k] == 'w') - srcReg->Swizzle |= 3 << (k*3); - else - RETURN_ERROR; - } - if (k >= 5) - RETURN_ERROR; - } - } - - return GL_TRUE; -} - - -static GLboolean -Parse_ScalarSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg) -{ - GLubyte token[100]; - GLint idx; - - srcReg->RelAddr = GL_FALSE; - - /* check for '-' */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - if (token[0] == '-') { - srcReg->Negate = NEGATE_XYZW; - (void) Parse_String(parseState, "-"); /* consume '-' */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - } - else { - srcReg->Negate = NEGATE_NONE; - } - - /* Src reg can be R, c[n], c[n +/- offset], or a named vertex attrib */ - if (token[0] == 'R') { - srcReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'c') { - if (!Parse_ParamReg(parseState, srcReg)) - RETURN_ERROR; - } - else if (token[0] == 'v') { - srcReg->File = PROGRAM_INPUT; - if (!Parse_AttribReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else { - RETURN_ERROR2("Bad source register name", token); - } - - /* Look for .[xyzw] suffix */ - if (!Parse_String(parseState, ".")) - RETURN_ERROR; - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (token[0] == 'x' && token[1] == 0) { - srcReg->Swizzle = 0; - } - else if (token[0] == 'y' && token[1] == 0) { - srcReg->Swizzle = 1; - } - else if (token[0] == 'z' && token[1] == 0) { - srcReg->Swizzle = 2; - } - else if (token[0] == 'w' && token[1] == 0) { - srcReg->Swizzle = 3; - } - else { - RETURN_ERROR1("Bad scalar source suffix"); - } - - return GL_TRUE; -} - - -static GLint -Parse_UnaryOpInstruction(struct parse_state *parseState, - struct prog_instruction *inst, - enum prog_opcode opcode) -{ - if (opcode == OPCODE_ABS && !parseState->isVersion1_1) - RETURN_ERROR1("ABS illegal for vertex program 1.0"); - - inst->Opcode = opcode; - - /* dest reg */ - if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_BiOpInstruction(struct parse_state *parseState, - struct prog_instruction *inst, - enum prog_opcode opcode) -{ - if (opcode == OPCODE_DPH && !parseState->isVersion1_1) - RETURN_ERROR1("DPH illegal for vertex program 1.0"); - if (opcode == OPCODE_SUB && !parseState->isVersion1_1) - RETURN_ERROR1("SUB illegal for vertex program 1.0"); - - inst->Opcode = opcode; - - /* dest reg */ - if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* first src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* second src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - /* make sure we don't reference more than one program parameter register */ - if (inst->SrcReg[0].File == PROGRAM_ENV_PARAM && - inst->SrcReg[1].File == PROGRAM_ENV_PARAM && - inst->SrcReg[0].Index != inst->SrcReg[1].Index) - RETURN_ERROR1("Can't reference two program parameter registers"); - - /* make sure we don't reference more than one vertex attribute register */ - if (inst->SrcReg[0].File == PROGRAM_INPUT && - inst->SrcReg[1].File == PROGRAM_INPUT && - inst->SrcReg[0].Index != inst->SrcReg[1].Index) - RETURN_ERROR1("Can't reference two vertex attribute registers"); - - return GL_TRUE; -} - - -static GLboolean -Parse_TriOpInstruction(struct parse_state *parseState, - struct prog_instruction *inst, - enum prog_opcode opcode) -{ - inst->Opcode = opcode; - - /* dest reg */ - if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* first src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* second src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* third src arg */ - if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2])) - RETURN_ERROR; - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - /* make sure we don't reference more than one program parameter register */ - if ((inst->SrcReg[0].File == PROGRAM_ENV_PARAM && - inst->SrcReg[1].File == PROGRAM_ENV_PARAM && - inst->SrcReg[0].Index != inst->SrcReg[1].Index) || - (inst->SrcReg[0].File == PROGRAM_ENV_PARAM && - inst->SrcReg[2].File == PROGRAM_ENV_PARAM && - inst->SrcReg[0].Index != inst->SrcReg[2].Index) || - (inst->SrcReg[1].File == PROGRAM_ENV_PARAM && - inst->SrcReg[2].File == PROGRAM_ENV_PARAM && - inst->SrcReg[1].Index != inst->SrcReg[2].Index)) - RETURN_ERROR1("Can only reference one program register"); - - /* make sure we don't reference more than one vertex attribute register */ - if ((inst->SrcReg[0].File == PROGRAM_INPUT && - inst->SrcReg[1].File == PROGRAM_INPUT && - inst->SrcReg[0].Index != inst->SrcReg[1].Index) || - (inst->SrcReg[0].File == PROGRAM_INPUT && - inst->SrcReg[2].File == PROGRAM_INPUT && - inst->SrcReg[0].Index != inst->SrcReg[2].Index) || - (inst->SrcReg[1].File == PROGRAM_INPUT && - inst->SrcReg[2].File == PROGRAM_INPUT && - inst->SrcReg[1].Index != inst->SrcReg[2].Index)) - RETURN_ERROR1("Can only reference one input register"); - - return GL_TRUE; -} - - -static GLboolean -Parse_ScalarInstruction(struct parse_state *parseState, - struct prog_instruction *inst, - enum prog_opcode opcode) -{ - if (opcode == OPCODE_RCC && !parseState->isVersion1_1) - RETURN_ERROR1("RCC illegal for vertex program 1.0"); - - inst->Opcode = opcode; - - /* dest reg */ - if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* first src arg */ - if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_AddressInstruction(struct parse_state *parseState, struct prog_instruction *inst) -{ - inst->Opcode = OPCODE_ARL; - - /* Make ARB_vp backends happy */ - inst->DstReg.File = PROGRAM_ADDRESS; - inst->DstReg.WriteMask = WRITEMASK_X; - inst->DstReg.Index = 0; - - /* dest A0 reg */ - if (!Parse_AddrReg(parseState)) - RETURN_ERROR; - - /* comma */ - if (!Parse_String(parseState, ",")) - RETURN_ERROR; - - /* parse src reg */ - if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_EndInstruction(struct parse_state *parseState, struct prog_instruction *inst) -{ - GLubyte token[100]; - - inst->Opcode = OPCODE_END; - - /* this should fail! */ - if (Parse_Token(parseState, token)) - RETURN_ERROR2("Unexpected token after END:", token); - else - return GL_TRUE; -} - - -/** - * The PRINT instruction is Mesa-specific and is meant as a debugging aid for - * the vertex program developer. - * The NV_vertex_program extension grammar is modified as follows: - * - * ::= - * | ... - * | - * - * ::= "PRINT" - * | "PRINT" "," - * | "PRINT" "," - */ -static GLboolean -Parse_PrintInstruction(struct parse_state *parseState, struct prog_instruction *inst) -{ - const GLubyte *str; - GLubyte *msg; - GLuint len; - GLubyte token[100]; - struct prog_src_register *srcReg = &inst->SrcReg[0]; - GLint idx; - - inst->Opcode = OPCODE_PRINT; - - /* The first argument is a literal string 'just like this' */ - if (!Parse_String(parseState, "'")) - RETURN_ERROR; - - str = parseState->pos; - for (len = 0; str[len] != '\''; len++) /* find closing quote */ - ; - parseState->pos += len + 1; - msg = (GLubyte*) malloc(len + 1); - - memcpy(msg, str, len); - msg[len] = 0; - inst->Data = msg; - - /* comma */ - if (Parse_String(parseState, ",")) { - - /* The second argument is a register name */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - srcReg->RelAddr = GL_FALSE; - srcReg->Negate = NEGATE_NONE; - srcReg->Swizzle = SWIZZLE_NOOP; - - /* Register can be R, c[n], c[n +/- offset], a named vertex attrib, - * or an o[n] output register. - */ - if (token[0] == 'R') { - srcReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'c') { - srcReg->File = PROGRAM_ENV_PARAM; - if (!Parse_ParamReg(parseState, srcReg)) - RETURN_ERROR; - } - else if (token[0] == 'v') { - srcReg->File = PROGRAM_INPUT; - if (!Parse_AttribReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'o') { - srcReg->File = PROGRAM_OUTPUT; - if (!Parse_OutputReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else { - RETURN_ERROR2("Bad source register name", token); - } - } - else { - srcReg->File = PROGRAM_UNDEFINED; - } - - /* semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR; - - return GL_TRUE; -} - - -static GLboolean -Parse_OptionSequence(struct parse_state *parseState, - struct prog_instruction program[]) -{ - (void) program; - while (1) { - if (!Parse_String(parseState, "OPTION")) - return GL_TRUE; /* ok, not an OPTION statement */ - if (Parse_String(parseState, "NV_position_invariant")) { - parseState->isPositionInvariant = GL_TRUE; - } - else { - RETURN_ERROR1("unexpected OPTION statement"); - } - if (!Parse_String(parseState, ";")) - return GL_FALSE; - } -} - - -static GLboolean -Parse_InstructionSequence(struct parse_state *parseState, - struct prog_instruction program[]) -{ - while (1) { - struct prog_instruction *inst = program + parseState->numInst; - - /* Initialize the instruction */ - _mesa_init_instructions(inst, 1); - - if (Parse_String(parseState, "MOV")) { - if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_MOV)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "LIT")) { - if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_LIT)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "ABS")) { - if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_ABS)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "MUL")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MUL)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "ADD")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_ADD)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "DP3")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP3)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "DP4")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP4)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "DST")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DST)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "MIN")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MIN)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "MAX")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MAX)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "SLT")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SLT)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "SGE")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SGE)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "DPH")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DPH)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "SUB")) { - if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SUB)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "MAD")) { - if (!Parse_TriOpInstruction(parseState, inst, OPCODE_MAD)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "RCP")) { - if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCP)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "RSQ")) { - if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RSQ)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "EXP")) { - if (!Parse_ScalarInstruction(parseState, inst, OPCODE_EXP)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "LOG")) { - if (!Parse_ScalarInstruction(parseState, inst, OPCODE_LOG)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "RCC")) { - if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCC)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "ARL")) { - if (!Parse_AddressInstruction(parseState, inst)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "PRINT")) { - if (!Parse_PrintInstruction(parseState, inst)) - RETURN_ERROR; - } - else if (Parse_String(parseState, "END")) { - if (!Parse_EndInstruction(parseState, inst)) - RETURN_ERROR; - else { - parseState->numInst++; - return GL_TRUE; /* all done */ - } - } - else { - /* bad instruction name */ - RETURN_ERROR1("Unexpected token"); - } - - /* examine input/output registers */ - if (inst->DstReg.File == PROGRAM_OUTPUT) - parseState->outputsWritten |= (1 << inst->DstReg.Index); - else if (inst->DstReg.File == PROGRAM_ENV_PARAM) - parseState->anyProgRegsWritten = GL_TRUE; - - if (inst->SrcReg[0].File == PROGRAM_INPUT) - parseState->inputsRead |= (1 << inst->SrcReg[0].Index); - if (inst->SrcReg[1].File == PROGRAM_INPUT) - parseState->inputsRead |= (1 << inst->SrcReg[1].Index); - if (inst->SrcReg[2].File == PROGRAM_INPUT) - parseState->inputsRead |= (1 << inst->SrcReg[2].Index); - - parseState->numInst++; - - if (parseState->numInst >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS) - RETURN_ERROR1("Program too long"); - } - - RETURN_ERROR; -} - - -static GLboolean -Parse_Program(struct parse_state *parseState, - struct prog_instruction instBuffer[]) -{ - if (parseState->isVersion1_1) { - if (!Parse_OptionSequence(parseState, instBuffer)) { - return GL_FALSE; - } - } - return Parse_InstructionSequence(parseState, instBuffer); -} - - -/** - * Parse/compile the 'str' returning the compiled 'program'. - * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos - * indicates the position of the error in 'str'. - */ -void -_mesa_parse_nv_vertex_program(struct gl_context *ctx, GLenum dstTarget, - const GLubyte *str, GLsizei len, - struct gl_vertex_program *program) -{ - struct parse_state parseState; - struct prog_instruction instBuffer[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS]; - struct prog_instruction *newInst; - GLenum target; - GLubyte *programString; - - /* Make a null-terminated copy of the program string */ - programString = (GLubyte *) MALLOC(len + 1); - if (!programString) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); - return; - } - memcpy(programString, str, len); - programString[len] = 0; - - /* Get ready to parse */ - parseState.ctx = ctx; - parseState.start = programString; - parseState.isPositionInvariant = GL_FALSE; - parseState.isVersion1_1 = GL_FALSE; - parseState.numInst = 0; - parseState.inputsRead = 0; - parseState.outputsWritten = 0; - parseState.anyProgRegsWritten = GL_FALSE; - parseState.indirectRegisterFiles = 0x0; - - /* Reset error state */ - _mesa_set_program_error(ctx, -1, NULL); - - /* check the program header */ - if (strncmp((const char *) programString, "!!VP1.0", 7) == 0) { - target = GL_VERTEX_PROGRAM_NV; - parseState.pos = programString + 7; - parseState.isStateProgram = GL_FALSE; - } - else if (strncmp((const char *) programString, "!!VP1.1", 7) == 0) { - target = GL_VERTEX_PROGRAM_NV; - parseState.pos = programString + 7; - parseState.isStateProgram = GL_FALSE; - parseState.isVersion1_1 = GL_TRUE; - } - else if (strncmp((const char *) programString, "!!VSP1.0", 8) == 0) { - target = GL_VERTEX_STATE_PROGRAM_NV; - parseState.pos = programString + 8; - parseState.isStateProgram = GL_TRUE; - } - else { - /* invalid header */ - ctx->Program.ErrorPos = 0; - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)"); - return; - } - - /* make sure target and header match */ - if (target != dstTarget) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glLoadProgramNV(target mismatch)"); - return; - } - - - if (Parse_Program(&parseState, instBuffer)) { - gl_state_index state_tokens[STATE_LENGTH] = {0, 0, 0, 0, 0}; - int i; - - /* successful parse! */ - - if (parseState.isStateProgram) { - if (!parseState.anyProgRegsWritten) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glLoadProgramNV(c[#] not written)"); - return; - } - } - else { - if (!parseState.isPositionInvariant && - !(parseState.outputsWritten & (1 << VERT_RESULT_HPOS))) { - /* bit 1 = HPOS register */ - _mesa_error(ctx, GL_INVALID_OPERATION, - "glLoadProgramNV(HPOS not written)"); - return; - } - } - - /* copy the compiled instructions */ - assert(parseState.numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS); - newInst = _mesa_alloc_instructions(parseState.numInst); - if (!newInst) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); - free(programString); - return; /* out of memory */ - } - _mesa_copy_instructions(newInst, instBuffer, parseState.numInst); - - /* install the program */ - program->Base.Target = target; - if (program->Base.String) { - free(program->Base.String); - } - program->Base.String = programString; - program->Base.Format = GL_PROGRAM_FORMAT_ASCII_ARB; - if (program->Base.Instructions) { - free(program->Base.Instructions); - } - program->Base.Instructions = newInst; - program->Base.InputsRead = parseState.inputsRead; - if (parseState.isPositionInvariant) - program->Base.InputsRead |= VERT_BIT_POS; - program->Base.NumInstructions = parseState.numInst; - program->Base.OutputsWritten = parseState.outputsWritten; - program->IsPositionInvariant = parseState.isPositionInvariant; - program->IsNVProgram = GL_TRUE; - -#ifdef DEBUG_foo - printf("--- glLoadProgramNV result ---\n"); - _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0); - printf("------------------------------\n"); -#endif - - if (program->Base.Parameters) - _mesa_free_parameter_list(program->Base.Parameters); - - program->Base.Parameters = _mesa_new_parameter_list (); - program->Base.NumParameters = 0; - - program->Base.IndirectRegisterFiles = parseState.indirectRegisterFiles; - - state_tokens[0] = STATE_VERTEX_PROGRAM; - state_tokens[1] = STATE_ENV; - /* Add refs to all of the potential params, in order. If we want to not - * upload everything, _mesa_layout_parameters is the answer. - */ - for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS; i++) { - GLint index; - state_tokens[2] = i; - index = _mesa_add_state_reference(program->Base.Parameters, - state_tokens); - assert(index == i); - } - program->Base.NumParameters = program->Base.Parameters->NumParameters; - - _mesa_setup_nv_temporary_count(ctx, &program->Base); - _mesa_emit_nv_temp_initialization(ctx, &program->Base); - } - else { - /* Error! */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); - /* NOTE: _mesa_set_program_error would have been called already */ - /* GL_NV_vertex_program isn't supposed to set the error string - * so we reset it here. - */ - _mesa_set_program_error(ctx, ctx->Program.ErrorPos, NULL); - } -} - - -const char * -_mesa_nv_vertex_input_register_name(GLuint i) -{ - ASSERT(i < MAX_NV_VERTEX_PROGRAM_INPUTS); - return InputRegisters[i]; -} - - -const char * -_mesa_nv_vertex_output_register_name(GLuint i) -{ - ASSERT(i < MAX_NV_VERTEX_PROGRAM_OUTPUTS); - return OutputRegisters[i]; -} - +/* + * Mesa 3-D graphics library + * Version: 6.5.2 + * + * Copyright (C) 1999-2006 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 nvvertparse.c + * NVIDIA vertex program parser. + * \author Brian Paul + */ + +/* + * Regarding GL_NV_vertex_program, GL_NV_vertex_program1_1: + * + * Portions of this software may use or implement intellectual + * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims + * any and all warranties with respect to such intellectual property, + * including any use thereof or modifications thereto. + */ + +#include "main/glheader.h" +#include "main/context.h" +#include "main/imports.h" +#include "main/nvprogram.h" +#include "nvvertparse.h" +#include "prog_instruction.h" +#include "prog_parameter.h" +#include "prog_print.h" +#include "program.h" + + +/** + * Current parsing state. This structure is passed among the parsing + * functions and keeps track of the current parser position and various + * program attributes. + */ +struct parse_state { + struct gl_context *ctx; + const GLubyte *start; + const GLubyte *pos; + const GLubyte *curLine; + GLboolean isStateProgram; + GLboolean isPositionInvariant; + GLboolean isVersion1_1; + GLbitfield inputsRead; + GLbitfield outputsWritten; + GLboolean anyProgRegsWritten; + GLboolean indirectRegisterFiles; + GLuint numInst; /* number of instructions parsed */ +}; + + +/* + * Called whenever we find an error during parsing. + */ +static void +record_error(struct parse_state *parseState, const char *msg, int lineNo) +{ +#ifdef DEBUG + GLint line, column; + const GLubyte *lineStr; + lineStr = _mesa_find_line_column(parseState->start, + parseState->pos, &line, &column); + _mesa_debug(parseState->ctx, + "nvfragparse.c(%d): line %d, column %d:%s (%s)\n", + lineNo, line, column, (char *) lineStr, msg); + free((void *) lineStr); +#else + (void) lineNo; +#endif + + /* Check that no error was already recorded. Only record the first one. */ + if (parseState->ctx->Program.ErrorString[0] == 0) { + _mesa_set_program_error(parseState->ctx, + parseState->pos - parseState->start, + msg); + } +} + + +#define RETURN_ERROR \ +do { \ + record_error(parseState, "Unexpected end of input.", __LINE__); \ + return GL_FALSE; \ +} while(0) + +#define RETURN_ERROR1(msg) \ +do { \ + record_error(parseState, msg, __LINE__); \ + return GL_FALSE; \ +} while(0) + +#define RETURN_ERROR2(msg1, msg2) \ +do { \ + char err[1000]; \ + sprintf(err, "%s %s", msg1, msg2); \ + record_error(parseState, err, __LINE__); \ + return GL_FALSE; \ +} while(0) + + + + + +static GLboolean IsLetter(GLubyte b) +{ + return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z'); +} + + +static GLboolean IsDigit(GLubyte b) +{ + return b >= '0' && b <= '9'; +} + + +static GLboolean IsWhitespace(GLubyte b) +{ + return b == ' ' || b == '\t' || b == '\n' || b == '\r'; +} + + +/** + * Starting at 'str' find the next token. A token can be an integer, + * an identifier or punctuation symbol. + * \return <= 0 we found an error, else, return number of characters parsed. + */ +static GLint +GetToken(struct parse_state *parseState, GLubyte *token) +{ + const GLubyte *str = parseState->pos; + GLint i = 0, j = 0; + + token[0] = 0; + + /* skip whitespace and comments */ + while (str[i] && (IsWhitespace(str[i]) || str[i] == '#')) { + if (str[i] == '#') { + /* skip comment */ + while (str[i] && (str[i] != '\n' && str[i] != '\r')) { + i++; + } + if (str[i] == '\n' || str[i] == '\r') + parseState->curLine = str + i + 1; + } + else { + /* skip whitespace */ + if (str[i] == '\n' || str[i] == '\r') + parseState->curLine = str + i + 1; + i++; + } + } + + if (str[i] == 0) + return -i; + + /* try matching an integer */ + while (str[i] && IsDigit(str[i])) { + token[j++] = str[i++]; + } + if (j > 0 || !str[i]) { + token[j] = 0; + return i; + } + + /* try matching an identifier */ + if (IsLetter(str[i])) { + while (str[i] && (IsLetter(str[i]) || IsDigit(str[i]))) { + token[j++] = str[i++]; + } + token[j] = 0; + return i; + } + + /* punctuation character */ + if (str[i]) { + token[0] = str[i++]; + token[1] = 0; + return i; + } + + /* end of input */ + token[0] = 0; + return i; +} + + +/** + * Get next token from input stream and increment stream pointer past token. + */ +static GLboolean +Parse_Token(struct parse_state *parseState, GLubyte *token) +{ + GLint i; + i = GetToken(parseState, token); + if (i <= 0) { + parseState->pos += (-i); + return GL_FALSE; + } + parseState->pos += i; + return GL_TRUE; +} + + +/** + * Get next token from input stream but don't increment stream pointer. + */ +static GLboolean +Peek_Token(struct parse_state *parseState, GLubyte *token) +{ + GLint i, len; + i = GetToken(parseState, token); + if (i <= 0) { + parseState->pos += (-i); + return GL_FALSE; + } + len = (GLint) strlen((const char *) token); + parseState->pos += (i - len); + return GL_TRUE; +} + + +/** + * Try to match 'pattern' as the next token after any whitespace/comments. + * Advance the current parsing position only if we match the pattern. + * \return GL_TRUE if pattern is matched, GL_FALSE otherwise. + */ +static GLboolean +Parse_String(struct parse_state *parseState, const char *pattern) +{ + const GLubyte *m; + GLint i; + + /* skip whitespace and comments */ + while (IsWhitespace(*parseState->pos) || *parseState->pos == '#') { + if (*parseState->pos == '#') { + while (*parseState->pos && (*parseState->pos != '\n' && *parseState->pos != '\r')) { + parseState->pos += 1; + } + if (*parseState->pos == '\n' || *parseState->pos == '\r') + parseState->curLine = parseState->pos + 1; + } + else { + /* skip whitespace */ + if (*parseState->pos == '\n' || *parseState->pos == '\r') + parseState->curLine = parseState->pos + 1; + parseState->pos += 1; + } + } + + /* Try to match the pattern */ + m = parseState->pos; + for (i = 0; pattern[i]; i++) { + if (*m != (GLubyte) pattern[i]) + return GL_FALSE; + m += 1; + } + parseState->pos = m; + + return GL_TRUE; /* success */ +} + + +/**********************************************************************/ + +static const char *InputRegisters[MAX_NV_VERTEX_PROGRAM_INPUTS + 1] = { + "OPOS", "WGHT", "NRML", "COL0", "COL1", "FOGC", "6", "7", + "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL +}; + +static const char *OutputRegisters[MAX_NV_VERTEX_PROGRAM_OUTPUTS + 1] = { + "HPOS", "COL0", "COL1", "FOGC", + "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", + "PSIZ", "BFC0", "BFC1", NULL +}; + + + +/** + * Parse a temporary register: Rnn + */ +static GLboolean +Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum) +{ + GLubyte token[100]; + + /* Should be 'R##' */ + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + if (token[0] != 'R') + RETURN_ERROR1("Expected R##"); + + if (IsDigit(token[1])) { + GLint reg = atoi((char *) (token + 1)); + if (reg >= MAX_NV_VERTEX_PROGRAM_TEMPS) + RETURN_ERROR1("Bad temporary register name"); + *tempRegNum = reg; + } + else { + RETURN_ERROR1("Bad temporary register name"); + } + + return GL_TRUE; +} + + +/** + * Parse address register "A0.x" + */ +static GLboolean +Parse_AddrReg(struct parse_state *parseState) +{ + /* match 'A0' */ + if (!Parse_String(parseState, "A0")) + RETURN_ERROR; + + /* match '.' */ + if (!Parse_String(parseState, ".")) + RETURN_ERROR; + + /* match 'x' */ + if (!Parse_String(parseState, "x")) + RETURN_ERROR; + + return GL_TRUE; +} + + +/** + * Parse absolute program parameter register "c[##]" + */ +static GLboolean +Parse_AbsParamReg(struct parse_state *parseState, GLint *regNum) +{ + GLubyte token[100]; + + if (!Parse_String(parseState, "c")) + RETURN_ERROR; + + if (!Parse_String(parseState, "[")) + RETURN_ERROR; + + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (IsDigit(token[0])) { + /* a numbered program parameter register */ + GLint reg = atoi((char *) token); + if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS) + RETURN_ERROR1("Bad program parameter number"); + *regNum = reg; + } + else { + RETURN_ERROR; + } + + if (!Parse_String(parseState, "]")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_ParamReg(struct parse_state *parseState, struct prog_src_register *srcReg) +{ + GLubyte token[100]; + + if (!Parse_String(parseState, "c")) + RETURN_ERROR; + + if (!Parse_String(parseState, "[")) + RETURN_ERROR; + + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + + if (IsDigit(token[0])) { + /* a numbered program parameter register */ + GLint reg; + (void) Parse_Token(parseState, token); + reg = atoi((char *) token); + if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS) + RETURN_ERROR1("Bad program parameter number"); + srcReg->File = PROGRAM_ENV_PARAM; + srcReg->Index = reg; + } + else if (strcmp((const char *) token, "A0") == 0) { + /* address register "A0.x" */ + if (!Parse_AddrReg(parseState)) + RETURN_ERROR; + + srcReg->RelAddr = GL_TRUE; + srcReg->File = PROGRAM_ENV_PARAM; + parseState->indirectRegisterFiles |= (1 << srcReg->File); + /* Look for +/-N offset */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + + if (token[0] == '-' || token[0] == '+') { + const GLubyte sign = token[0]; + (void) Parse_Token(parseState, token); /* consume +/- */ + + /* an integer should be next */ + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (IsDigit(token[0])) { + const GLint k = atoi((char *) token); + if (sign == '-') { + if (k > 64) + RETURN_ERROR1("Bad address offset"); + srcReg->Index = -k; + } + else { + if (k > 63) + RETURN_ERROR1("Bad address offset"); + srcReg->Index = k; + } + } + else { + RETURN_ERROR; + } + } + else { + /* probably got a ']', catch it below */ + } + } + else { + RETURN_ERROR; + } + + /* Match closing ']' */ + if (!Parse_String(parseState, "]")) + RETURN_ERROR; + + return GL_TRUE; +} + + +/** + * Parse v[#] or v[] + */ +static GLboolean +Parse_AttribReg(struct parse_state *parseState, GLint *tempRegNum) +{ + GLubyte token[100]; + GLint j; + + /* Match 'v' */ + if (!Parse_String(parseState, "v")) + RETURN_ERROR; + + /* Match '[' */ + if (!Parse_String(parseState, "[")) + RETURN_ERROR; + + /* match number or named register */ + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (parseState->isStateProgram && token[0] != '0') + RETURN_ERROR1("Only v[0] accessible in vertex state programs"); + + if (IsDigit(token[0])) { + GLint reg = atoi((char *) token); + if (reg >= MAX_NV_VERTEX_PROGRAM_INPUTS) + RETURN_ERROR1("Bad vertex attribute register name"); + *tempRegNum = reg; + } + else { + for (j = 0; InputRegisters[j]; j++) { + if (strcmp((const char *) token, InputRegisters[j]) == 0) { + *tempRegNum = j; + break; + } + } + if (!InputRegisters[j]) { + /* unknown input register label */ + RETURN_ERROR2("Bad register name", token); + } + } + + /* Match '[' */ + if (!Parse_String(parseState, "]")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum) +{ + GLubyte token[100]; + GLint start, j; + + /* Match 'o' */ + if (!Parse_String(parseState, "o")) + RETURN_ERROR; + + /* Match '[' */ + if (!Parse_String(parseState, "[")) + RETURN_ERROR; + + /* Get output reg name */ + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (parseState->isPositionInvariant) + start = 1; /* skip HPOS register name */ + else + start = 0; + + /* try to match an output register name */ + for (j = start; OutputRegisters[j]; j++) { + if (strcmp((const char *) token, OutputRegisters[j]) == 0) { + *outputRegNum = j; + break; + } + } + if (!OutputRegisters[j]) + RETURN_ERROR1("Unrecognized output register name"); + + /* Match ']' */ + if (!Parse_String(parseState, "]")) + RETURN_ERROR1("Expected ]"); + + return GL_TRUE; +} + + +static GLboolean +Parse_MaskedDstReg(struct parse_state *parseState, struct prog_dst_register *dstReg) +{ + GLubyte token[100]; + GLint idx; + + /* Dst reg can be R or o[n] */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + + if (token[0] == 'R') { + /* a temporary register */ + dstReg->File = PROGRAM_TEMPORARY; + if (!Parse_TempReg(parseState, &idx)) + RETURN_ERROR; + dstReg->Index = idx; + } + else if (!parseState->isStateProgram && token[0] == 'o') { + /* an output register */ + dstReg->File = PROGRAM_OUTPUT; + if (!Parse_OutputReg(parseState, &idx)) + RETURN_ERROR; + dstReg->Index = idx; + } + else if (parseState->isStateProgram && token[0] == 'c' && + parseState->isStateProgram) { + /* absolute program parameter register */ + /* Only valid for vertex state programs */ + dstReg->File = PROGRAM_ENV_PARAM; + if (!Parse_AbsParamReg(parseState, &idx)) + RETURN_ERROR; + dstReg->Index = idx; + } + else { + RETURN_ERROR1("Bad destination register name"); + } + + /* Parse optional write mask */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + + if (token[0] == '.') { + /* got a mask */ + GLint k = 0; + + if (!Parse_String(parseState, ".")) + RETURN_ERROR; + + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + dstReg->WriteMask = 0; + + if (token[k] == 'x') { + dstReg->WriteMask |= WRITEMASK_X; + k++; + } + if (token[k] == 'y') { + dstReg->WriteMask |= WRITEMASK_Y; + k++; + } + if (token[k] == 'z') { + dstReg->WriteMask |= WRITEMASK_Z; + k++; + } + if (token[k] == 'w') { + dstReg->WriteMask |= WRITEMASK_W; + k++; + } + if (k == 0) { + RETURN_ERROR1("Bad writemask character"); + } + return GL_TRUE; + } + else { + dstReg->WriteMask = WRITEMASK_XYZW; + return GL_TRUE; + } +} + + +static GLboolean +Parse_SwizzleSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg) +{ + GLubyte token[100]; + GLint idx; + + srcReg->RelAddr = GL_FALSE; + + /* check for '-' */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + if (token[0] == '-') { + (void) Parse_String(parseState, "-"); + srcReg->Negate = NEGATE_XYZW; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + } + else { + srcReg->Negate = NEGATE_NONE; + } + + /* Src reg can be R, c[n], c[n +/- offset], or a named vertex attrib */ + if (token[0] == 'R') { + srcReg->File = PROGRAM_TEMPORARY; + if (!Parse_TempReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else if (token[0] == 'c') { + if (!Parse_ParamReg(parseState, srcReg)) + RETURN_ERROR; + } + else if (token[0] == 'v') { + srcReg->File = PROGRAM_INPUT; + if (!Parse_AttribReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else { + RETURN_ERROR2("Bad source register name", token); + } + + /* init swizzle fields */ + srcReg->Swizzle = SWIZZLE_NOOP; + + /* Look for optional swizzle suffix */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + if (token[0] == '.') { + (void) Parse_String(parseState, "."); /* consume . */ + + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (token[1] == 0) { + /* single letter swizzle */ + if (token[0] == 'x') + srcReg->Swizzle = SWIZZLE_XXXX; + else if (token[0] == 'y') + srcReg->Swizzle = SWIZZLE_YYYY; + else if (token[0] == 'z') + srcReg->Swizzle = SWIZZLE_ZZZZ; + else if (token[0] == 'w') + srcReg->Swizzle = SWIZZLE_WWWW; + else + RETURN_ERROR1("Expected x, y, z, or w"); + } + else { + /* 2, 3 or 4-component swizzle */ + GLint k; + + srcReg->Swizzle = 0; + + for (k = 0; token[k] && k < 5; k++) { + if (token[k] == 'x') + srcReg->Swizzle |= 0 << (k*3); + else if (token[k] == 'y') + srcReg->Swizzle |= 1 << (k*3); + else if (token[k] == 'z') + srcReg->Swizzle |= 2 << (k*3); + else if (token[k] == 'w') + srcReg->Swizzle |= 3 << (k*3); + else + RETURN_ERROR; + } + if (k >= 5) + RETURN_ERROR; + } + } + + return GL_TRUE; +} + + +static GLboolean +Parse_ScalarSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg) +{ + GLubyte token[100]; + GLint idx; + + srcReg->RelAddr = GL_FALSE; + + /* check for '-' */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + if (token[0] == '-') { + srcReg->Negate = NEGATE_XYZW; + (void) Parse_String(parseState, "-"); /* consume '-' */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + } + else { + srcReg->Negate = NEGATE_NONE; + } + + /* Src reg can be R, c[n], c[n +/- offset], or a named vertex attrib */ + if (token[0] == 'R') { + srcReg->File = PROGRAM_TEMPORARY; + if (!Parse_TempReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else if (token[0] == 'c') { + if (!Parse_ParamReg(parseState, srcReg)) + RETURN_ERROR; + } + else if (token[0] == 'v') { + srcReg->File = PROGRAM_INPUT; + if (!Parse_AttribReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else { + RETURN_ERROR2("Bad source register name", token); + } + + /* Look for .[xyzw] suffix */ + if (!Parse_String(parseState, ".")) + RETURN_ERROR; + + if (!Parse_Token(parseState, token)) + RETURN_ERROR; + + if (token[0] == 'x' && token[1] == 0) { + srcReg->Swizzle = 0; + } + else if (token[0] == 'y' && token[1] == 0) { + srcReg->Swizzle = 1; + } + else if (token[0] == 'z' && token[1] == 0) { + srcReg->Swizzle = 2; + } + else if (token[0] == 'w' && token[1] == 0) { + srcReg->Swizzle = 3; + } + else { + RETURN_ERROR1("Bad scalar source suffix"); + } + + return GL_TRUE; +} + + +static GLint +Parse_UnaryOpInstruction(struct parse_state *parseState, + struct prog_instruction *inst, + enum prog_opcode opcode) +{ + if (opcode == OPCODE_ABS && !parseState->isVersion1_1) + RETURN_ERROR1("ABS illegal for vertex program 1.0"); + + inst->Opcode = opcode; + + /* dest reg */ + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_BiOpInstruction(struct parse_state *parseState, + struct prog_instruction *inst, + enum prog_opcode opcode) +{ + if (opcode == OPCODE_DPH && !parseState->isVersion1_1) + RETURN_ERROR1("DPH illegal for vertex program 1.0"); + if (opcode == OPCODE_SUB && !parseState->isVersion1_1) + RETURN_ERROR1("SUB illegal for vertex program 1.0"); + + inst->Opcode = opcode; + + /* dest reg */ + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* first src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* second src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) + RETURN_ERROR; + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + /* make sure we don't reference more than one program parameter register */ + if (inst->SrcReg[0].File == PROGRAM_ENV_PARAM && + inst->SrcReg[1].File == PROGRAM_ENV_PARAM && + inst->SrcReg[0].Index != inst->SrcReg[1].Index) + RETURN_ERROR1("Can't reference two program parameter registers"); + + /* make sure we don't reference more than one vertex attribute register */ + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[1].File == PROGRAM_INPUT && + inst->SrcReg[0].Index != inst->SrcReg[1].Index) + RETURN_ERROR1("Can't reference two vertex attribute registers"); + + return GL_TRUE; +} + + +static GLboolean +Parse_TriOpInstruction(struct parse_state *parseState, + struct prog_instruction *inst, + enum prog_opcode opcode) +{ + inst->Opcode = opcode; + + /* dest reg */ + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* first src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* second src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* third src arg */ + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2])) + RETURN_ERROR; + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + /* make sure we don't reference more than one program parameter register */ + if ((inst->SrcReg[0].File == PROGRAM_ENV_PARAM && + inst->SrcReg[1].File == PROGRAM_ENV_PARAM && + inst->SrcReg[0].Index != inst->SrcReg[1].Index) || + (inst->SrcReg[0].File == PROGRAM_ENV_PARAM && + inst->SrcReg[2].File == PROGRAM_ENV_PARAM && + inst->SrcReg[0].Index != inst->SrcReg[2].Index) || + (inst->SrcReg[1].File == PROGRAM_ENV_PARAM && + inst->SrcReg[2].File == PROGRAM_ENV_PARAM && + inst->SrcReg[1].Index != inst->SrcReg[2].Index)) + RETURN_ERROR1("Can only reference one program register"); + + /* make sure we don't reference more than one vertex attribute register */ + if ((inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[1].File == PROGRAM_INPUT && + inst->SrcReg[0].Index != inst->SrcReg[1].Index) || + (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[2].File == PROGRAM_INPUT && + inst->SrcReg[0].Index != inst->SrcReg[2].Index) || + (inst->SrcReg[1].File == PROGRAM_INPUT && + inst->SrcReg[2].File == PROGRAM_INPUT && + inst->SrcReg[1].Index != inst->SrcReg[2].Index)) + RETURN_ERROR1("Can only reference one input register"); + + return GL_TRUE; +} + + +static GLboolean +Parse_ScalarInstruction(struct parse_state *parseState, + struct prog_instruction *inst, + enum prog_opcode opcode) +{ + if (opcode == OPCODE_RCC && !parseState->isVersion1_1) + RETURN_ERROR1("RCC illegal for vertex program 1.0"); + + inst->Opcode = opcode; + + /* dest reg */ + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* first src arg */ + if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_AddressInstruction(struct parse_state *parseState, struct prog_instruction *inst) +{ + inst->Opcode = OPCODE_ARL; + + /* Make ARB_vp backends happy */ + inst->DstReg.File = PROGRAM_ADDRESS; + inst->DstReg.WriteMask = WRITEMASK_X; + inst->DstReg.Index = 0; + + /* dest A0 reg */ + if (!Parse_AddrReg(parseState)) + RETURN_ERROR; + + /* comma */ + if (!Parse_String(parseState, ",")) + RETURN_ERROR; + + /* parse src reg */ + if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_EndInstruction(struct parse_state *parseState, struct prog_instruction *inst) +{ + GLubyte token[100]; + + inst->Opcode = OPCODE_END; + + /* this should fail! */ + if (Parse_Token(parseState, token)) + RETURN_ERROR2("Unexpected token after END:", token); + else + return GL_TRUE; +} + + +/** + * The PRINT instruction is Mesa-specific and is meant as a debugging aid for + * the vertex program developer. + * The NV_vertex_program extension grammar is modified as follows: + * + * ::= + * | ... + * | + * + * ::= "PRINT" + * | "PRINT" "," + * | "PRINT" "," + */ +static GLboolean +Parse_PrintInstruction(struct parse_state *parseState, struct prog_instruction *inst) +{ + const GLubyte *str; + GLubyte *msg; + GLuint len; + GLubyte token[100]; + struct prog_src_register *srcReg = &inst->SrcReg[0]; + GLint idx; + + inst->Opcode = OPCODE_PRINT; + + /* The first argument is a literal string 'just like this' */ + if (!Parse_String(parseState, "'")) + RETURN_ERROR; + + str = parseState->pos; + for (len = 0; str[len] != '\''; len++) /* find closing quote */ + ; + parseState->pos += len + 1; + msg = (GLubyte*) malloc(len + 1); + + memcpy(msg, str, len); + msg[len] = 0; + inst->Data = msg; + + /* comma */ + if (Parse_String(parseState, ",")) { + + /* The second argument is a register name */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; + + srcReg->RelAddr = GL_FALSE; + srcReg->Negate = NEGATE_NONE; + srcReg->Swizzle = SWIZZLE_NOOP; + + /* Register can be R, c[n], c[n +/- offset], a named vertex attrib, + * or an o[n] output register. + */ + if (token[0] == 'R') { + srcReg->File = PROGRAM_TEMPORARY; + if (!Parse_TempReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else if (token[0] == 'c') { + srcReg->File = PROGRAM_ENV_PARAM; + if (!Parse_ParamReg(parseState, srcReg)) + RETURN_ERROR; + } + else if (token[0] == 'v') { + srcReg->File = PROGRAM_INPUT; + if (!Parse_AttribReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else if (token[0] == 'o') { + srcReg->File = PROGRAM_OUTPUT; + if (!Parse_OutputReg(parseState, &idx)) + RETURN_ERROR; + srcReg->Index = idx; + } + else { + RETURN_ERROR2("Bad source register name", token); + } + } + else { + srcReg->File = PROGRAM_UNDEFINED; + } + + /* semicolon */ + if (!Parse_String(parseState, ";")) + RETURN_ERROR; + + return GL_TRUE; +} + + +static GLboolean +Parse_OptionSequence(struct parse_state *parseState, + struct prog_instruction program[]) +{ + (void) program; + while (1) { + if (!Parse_String(parseState, "OPTION")) + return GL_TRUE; /* ok, not an OPTION statement */ + if (Parse_String(parseState, "NV_position_invariant")) { + parseState->isPositionInvariant = GL_TRUE; + } + else { + RETURN_ERROR1("unexpected OPTION statement"); + } + if (!Parse_String(parseState, ";")) + return GL_FALSE; + } +} + + +static GLboolean +Parse_InstructionSequence(struct parse_state *parseState, + struct prog_instruction program[]) +{ + while (1) { + struct prog_instruction *inst = program + parseState->numInst; + + /* Initialize the instruction */ + _mesa_init_instructions(inst, 1); + + if (Parse_String(parseState, "MOV")) { + if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_MOV)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "LIT")) { + if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_LIT)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "ABS")) { + if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_ABS)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "MUL")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MUL)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "ADD")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_ADD)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "DP3")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP3)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "DP4")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP4)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "DST")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DST)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "MIN")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MIN)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "MAX")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MAX)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "SLT")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SLT)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "SGE")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SGE)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "DPH")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DPH)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "SUB")) { + if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SUB)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "MAD")) { + if (!Parse_TriOpInstruction(parseState, inst, OPCODE_MAD)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "RCP")) { + if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCP)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "RSQ")) { + if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RSQ)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "EXP")) { + if (!Parse_ScalarInstruction(parseState, inst, OPCODE_EXP)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "LOG")) { + if (!Parse_ScalarInstruction(parseState, inst, OPCODE_LOG)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "RCC")) { + if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCC)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "ARL")) { + if (!Parse_AddressInstruction(parseState, inst)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "PRINT")) { + if (!Parse_PrintInstruction(parseState, inst)) + RETURN_ERROR; + } + else if (Parse_String(parseState, "END")) { + if (!Parse_EndInstruction(parseState, inst)) + RETURN_ERROR; + else { + parseState->numInst++; + return GL_TRUE; /* all done */ + } + } + else { + /* bad instruction name */ + RETURN_ERROR1("Unexpected token"); + } + + /* examine input/output registers */ + if (inst->DstReg.File == PROGRAM_OUTPUT) + parseState->outputsWritten |= (1 << inst->DstReg.Index); + else if (inst->DstReg.File == PROGRAM_ENV_PARAM) + parseState->anyProgRegsWritten = GL_TRUE; + + if (inst->SrcReg[0].File == PROGRAM_INPUT) + parseState->inputsRead |= (1 << inst->SrcReg[0].Index); + if (inst->SrcReg[1].File == PROGRAM_INPUT) + parseState->inputsRead |= (1 << inst->SrcReg[1].Index); + if (inst->SrcReg[2].File == PROGRAM_INPUT) + parseState->inputsRead |= (1 << inst->SrcReg[2].Index); + + parseState->numInst++; + + if (parseState->numInst >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS) + RETURN_ERROR1("Program too long"); + } + + RETURN_ERROR; +} + + +static GLboolean +Parse_Program(struct parse_state *parseState, + struct prog_instruction instBuffer[]) +{ + if (parseState->isVersion1_1) { + if (!Parse_OptionSequence(parseState, instBuffer)) { + return GL_FALSE; + } + } + return Parse_InstructionSequence(parseState, instBuffer); +} + + +/** + * Parse/compile the 'str' returning the compiled 'program'. + * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos + * indicates the position of the error in 'str'. + */ +void +_mesa_parse_nv_vertex_program(struct gl_context *ctx, GLenum dstTarget, + const GLubyte *str, GLsizei len, + struct gl_vertex_program *program) +{ + struct parse_state parseState; + struct prog_instruction instBuffer[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS]; + struct prog_instruction *newInst; + GLenum target; + GLubyte *programString; + + /* Make a null-terminated copy of the program string */ + programString = (GLubyte *) MALLOC(len + 1); + if (!programString) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); + return; + } + memcpy(programString, str, len); + programString[len] = 0; + + /* Get ready to parse */ + parseState.ctx = ctx; + parseState.start = programString; + parseState.isPositionInvariant = GL_FALSE; + parseState.isVersion1_1 = GL_FALSE; + parseState.numInst = 0; + parseState.inputsRead = 0; + parseState.outputsWritten = 0; + parseState.anyProgRegsWritten = GL_FALSE; + parseState.indirectRegisterFiles = 0x0; + + /* Reset error state */ + _mesa_set_program_error(ctx, -1, NULL); + + /* check the program header */ + if (strncmp((const char *) programString, "!!VP1.0", 7) == 0) { + target = GL_VERTEX_PROGRAM_NV; + parseState.pos = programString + 7; + parseState.isStateProgram = GL_FALSE; + } + else if (strncmp((const char *) programString, "!!VP1.1", 7) == 0) { + target = GL_VERTEX_PROGRAM_NV; + parseState.pos = programString + 7; + parseState.isStateProgram = GL_FALSE; + parseState.isVersion1_1 = GL_TRUE; + } + else if (strncmp((const char *) programString, "!!VSP1.0", 8) == 0) { + target = GL_VERTEX_STATE_PROGRAM_NV; + parseState.pos = programString + 8; + parseState.isStateProgram = GL_TRUE; + } + else { + /* invalid header */ + ctx->Program.ErrorPos = 0; + _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)"); + return; + } + + /* make sure target and header match */ + if (target != dstTarget) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glLoadProgramNV(target mismatch)"); + return; + } + + + if (Parse_Program(&parseState, instBuffer)) { + gl_state_index state_tokens[STATE_LENGTH] = {0, 0, 0, 0, 0}; + int i; + + /* successful parse! */ + + if (parseState.isStateProgram) { + if (!parseState.anyProgRegsWritten) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glLoadProgramNV(c[#] not written)"); + return; + } + } + else { + if (!parseState.isPositionInvariant && + !(parseState.outputsWritten & (1 << VERT_RESULT_HPOS))) { + /* bit 1 = HPOS register */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glLoadProgramNV(HPOS not written)"); + return; + } + } + + /* copy the compiled instructions */ + assert(parseState.numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS); + newInst = _mesa_alloc_instructions(parseState.numInst); + if (!newInst) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); + free(programString); + return; /* out of memory */ + } + _mesa_copy_instructions(newInst, instBuffer, parseState.numInst); + + /* install the program */ + program->Base.Target = target; + if (program->Base.String) { + free(program->Base.String); + } + program->Base.String = programString; + program->Base.Format = GL_PROGRAM_FORMAT_ASCII_ARB; + if (program->Base.Instructions) { + free(program->Base.Instructions); + } + program->Base.Instructions = newInst; + program->Base.InputsRead = parseState.inputsRead; + if (parseState.isPositionInvariant) + program->Base.InputsRead |= VERT_BIT_POS; + program->Base.NumInstructions = parseState.numInst; + program->Base.OutputsWritten = parseState.outputsWritten; + program->IsPositionInvariant = parseState.isPositionInvariant; + program->IsNVProgram = GL_TRUE; + +#ifdef DEBUG_foo + printf("--- glLoadProgramNV result ---\n"); + _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0); + printf("------------------------------\n"); +#endif + + if (program->Base.Parameters) + _mesa_free_parameter_list(program->Base.Parameters); + + program->Base.Parameters = _mesa_new_parameter_list (); + program->Base.NumParameters = 0; + + program->Base.IndirectRegisterFiles = parseState.indirectRegisterFiles; + + state_tokens[0] = STATE_VERTEX_PROGRAM; + state_tokens[1] = STATE_ENV; + /* Add refs to all of the potential params, in order. If we want to not + * upload everything, _mesa_layout_parameters is the answer. + */ + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS; i++) { + GLint index; + state_tokens[2] = i; + index = _mesa_add_state_reference(program->Base.Parameters, + state_tokens); + assert(index == i); + } + program->Base.NumParameters = program->Base.Parameters->NumParameters; + + _mesa_setup_nv_temporary_count(&program->Base); + _mesa_emit_nv_temp_initialization(ctx, &program->Base); + } + else { + /* Error! */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); + /* NOTE: _mesa_set_program_error would have been called already */ + /* GL_NV_vertex_program isn't supposed to set the error string + * so we reset it here. + */ + _mesa_set_program_error(ctx, ctx->Program.ErrorPos, NULL); + } +} + + +const char * +_mesa_nv_vertex_input_register_name(GLuint i) +{ + ASSERT(i < MAX_NV_VERTEX_PROGRAM_INPUTS); + return InputRegisters[i]; +} + + +const char * +_mesa_nv_vertex_output_register_name(GLuint i) +{ + ASSERT(i < MAX_NV_VERTEX_PROGRAM_OUTPUTS); + return OutputRegisters[i]; +} + -- cgit v1.2.3