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Diffstat (limited to 'src/mesa/shader/program_parse.y')
| -rw-r--r-- | src/mesa/shader/program_parse.y | 2380 |
1 files changed, 2380 insertions, 0 deletions
diff --git a/src/mesa/shader/program_parse.y b/src/mesa/shader/program_parse.y new file mode 100644 index 00000000000..89e88502121 --- /dev/null +++ b/src/mesa/shader/program_parse.y @@ -0,0 +1,2380 @@ +%{ +/* + * Copyright © 2009 Intel Corporation + * + * 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 (including the next + * paragraph) 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 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "main/mtypes.h" +#include "main/imports.h" +#include "program.h" +#include "prog_parameter.h" +#include "prog_parameter_layout.h" +#include "prog_statevars.h" +#include "prog_instruction.h" + +#include "symbol_table.h" +#include "program_parser.h" + +extern void *yy_scan_string(char *); +extern void yy_delete_buffer(void *); + +static struct asm_symbol *declare_variable(struct asm_parser_state *state, + char *name, enum asm_type t, struct YYLTYPE *locp); + +static int add_state_reference(struct gl_program_parameter_list *param_list, + const gl_state_index tokens[STATE_LENGTH]); + +static int initialize_symbol_from_state(struct gl_program *prog, + struct asm_symbol *param_var, const gl_state_index tokens[STATE_LENGTH]); + +static int initialize_symbol_from_param(struct gl_program *prog, + struct asm_symbol *param_var, const gl_state_index tokens[STATE_LENGTH]); + +static int initialize_symbol_from_const(struct gl_program *prog, + struct asm_symbol *param_var, const struct asm_vector *vec); + +static int yyparse(struct asm_parser_state *state); + +static char *make_error_string(const char *fmt, ...); + +static void yyerror(struct YYLTYPE *locp, struct asm_parser_state *state, + const char *s); + +static int validate_inputs(struct YYLTYPE *locp, + struct asm_parser_state *state); + +static void init_dst_reg(struct prog_dst_register *r); + +static void init_src_reg(struct asm_src_register *r); + +static struct asm_instruction *asm_instruction_ctor(gl_inst_opcode op, + const struct prog_dst_register *dst, const struct asm_src_register *src0, + const struct asm_src_register *src1, const struct asm_src_register *src2); + +#ifndef FALSE +#define FALSE 0 +#define TRUE (!FALSE) +#endif + +#define YYLLOC_DEFAULT(Current, Rhs, N) \ + do { \ + if (YYID(N)) { \ + (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \ + (Current).position = YYRHSLOC(Rhs, 1).position; \ + (Current).last_line = YYRHSLOC(Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC(Rhs, N).last_column; \ + } else { \ + (Current).first_line = YYRHSLOC(Rhs, 0).last_line; \ + (Current).last_line = (Current).first_line; \ + (Current).first_column = YYRHSLOC(Rhs, 0).last_column; \ + (Current).last_column = (Current).first_column; \ + (Current).position = YYRHSLOC(Rhs, 0).position \ + + (Current).first_column; \ + } \ + } while(YYID(0)) + +#define YYLEX_PARAM state->scanner +%} + +%pure-parser +%locations +%parse-param { struct asm_parser_state *state } +%error-verbose +%lex-param { void *scanner } + +%union { + struct asm_instruction *inst; + struct asm_symbol *sym; + struct asm_symbol temp_sym; + struct asm_swizzle_mask swiz_mask; + struct asm_src_register src_reg; + struct prog_dst_register dst_reg; + struct prog_instruction temp_inst; + char *string; + unsigned result; + unsigned attrib; + int integer; + float real; + unsigned state[5]; + int negate; + struct asm_vector vector; + gl_inst_opcode opcode; + + struct { + unsigned swz; + unsigned rgba_valid:1; + unsigned xyzw_valid:1; + unsigned negate:1; + } ext_swizzle; +} + +%token ARBvp_10 ARBfp_10 + +/* Tokens for assembler pseudo-ops */ +%token <integer> ADDRESS +%token ALIAS ATTRIB +%token OPTION OUTPUT +%token PARAM +%token <integer> TEMP +%token END + + /* Tokens for instructions */ +%token <temp_inst> BIN_OP BINSC_OP SAMPLE_OP SCALAR_OP TRI_OP VECTOR_OP +%token <temp_inst> ARL KIL SWZ + +%token <integer> INTEGER +%token <real> REAL + +%token AMBIENT ATTENUATION +%token BACK +%token CLIP COLOR +%token DEPTH DIFFUSE DIRECTION +%token EMISSION ENV EYE +%token FOG FOGCOORD FRAGMENT FRONT +%token HALF +%token INVERSE INVTRANS +%token LIGHT LIGHTMODEL LIGHTPROD LOCAL +%token MATERIAL MAT_PROGRAM MATRIX MATRIXINDEX MODELVIEW MVP +%token NORMAL +%token OBJECT +%token PALETTE PARAMS PLANE POINT POINTSIZE POSITION PRIMARY PROGRAM PROJECTION +%token RANGE RESULT ROW +%token SCENECOLOR SECONDARY SHININESS SIZE SPECULAR SPOT STATE +%token TEXCOORD TEXENV TEXGEN TEXGEN_Q TEXGEN_R TEXGEN_S TEXGEN_T TEXTURE TRANSPOSE +%token TEXTURE_UNIT TEX_1D TEX_2D TEX_3D TEX_CUBE TEX_RECT +%token TEX_SHADOW1D TEX_SHADOW2D TEX_SHADOWRECT +%token TEX_ARRAY1D TEX_ARRAY2D TEX_ARRAYSHADOW1D TEX_ARRAYSHADOW2D +%token VERTEX VTXATTRIB +%token WEIGHT + +%token <string> IDENTIFIER +%token <swiz_mask> MASK4 MASK3 MASK2 MASK1 SWIZZLE +%token DOT_DOT +%token DOT + +%type <inst> instruction ALU_instruction TexInstruction +%type <inst> ARL_instruction VECTORop_instruction +%type <inst> SCALARop_instruction BINSCop_instruction BINop_instruction +%type <inst> TRIop_instruction SWZ_instruction SAMPLE_instruction +%type <inst> KIL_instruction + +%type <dst_reg> dstReg maskedDstReg maskedAddrReg +%type <src_reg> srcReg scalarSrcReg swizzleSrcReg +%type <swiz_mask> scalarSuffix swizzleSuffix extendedSwizzle +%type <ext_swizzle> extSwizComp extSwizSel +%type <swiz_mask> optionalMask + +%type <sym> progParamArray +%type <integer> addrRegRelOffset addrRegPosOffset addrRegNegOffset +%type <src_reg> progParamArrayMem progParamArrayAbs progParamArrayRel +%type <sym> addrReg +%type <swiz_mask> addrComponent addrWriteMask + +%type <result> resultBinding resultColBinding +%type <integer> optFaceType optColorType +%type <integer> optResultFaceType optResultColorType + +%type <integer> optTexImageUnitNum texImageUnitNum +%type <integer> optTexCoordUnitNum texCoordUnitNum +%type <integer> optLegacyTexUnitNum legacyTexUnitNum +%type <integer> texImageUnit texTarget +%type <integer> vtxAttribNum + +%type <attrib> attribBinding vtxAttribItem fragAttribItem + +%type <temp_sym> paramSingleInit paramSingleItemDecl +%type <integer> optArraySize + +%type <state> stateSingleItem stateMultipleItem +%type <state> stateMaterialItem +%type <state> stateLightItem stateLightModelItem stateLightProdItem +%type <state> stateTexGenItem stateFogItem stateClipPlaneItem statePointItem +%type <state> stateMatrixItem stateMatrixRow stateMatrixRows +%type <state> stateTexEnvItem stateDepthItem + +%type <state> stateLModProperty +%type <state> stateMatrixName optMatrixRows + +%type <integer> stateMatProperty +%type <integer> stateLightProperty stateSpotProperty +%type <integer> stateLightNumber stateLProdProperty +%type <integer> stateTexGenType stateTexGenCoord +%type <integer> stateTexEnvProperty +%type <integer> stateFogProperty +%type <integer> stateClipPlaneNum +%type <integer> statePointProperty + +%type <integer> stateOptMatModifier stateMatModifier stateMatrixRowNum +%type <integer> stateOptModMatNum stateModMatNum statePaletteMatNum +%type <integer> stateProgramMatNum + +%type <integer> ambDiffSpecProperty + +%type <state> programSingleItem progEnvParam progLocalParam +%type <state> programMultipleItem progEnvParams progLocalParams + +%type <temp_sym> paramMultipleInit paramMultInitList paramMultipleItem +%type <temp_sym> paramSingleItemUse + +%type <integer> progEnvParamNum progLocalParamNum +%type <state> progEnvParamNums progLocalParamNums + +%type <vector> paramConstDecl paramConstUse +%type <vector> paramConstScalarDecl paramConstScalarUse paramConstVector +%type <real> signedFloatConstant +%type <negate> optionalSign + +%{ +extern int yylex(YYSTYPE *yylval_param, YYLTYPE *yylloc_param, + void *yyscanner); +%} + +%% + +program: language optionSequence statementSequence END + ; + +language: ARBvp_10 + { + if (state->prog->Target != GL_VERTEX_PROGRAM_ARB) { + yyerror(& @1, state, "invalid fragment program header"); + + } + state->mode = ARB_vertex; + } + | ARBfp_10 + { + if (state->prog->Target != GL_FRAGMENT_PROGRAM_ARB) { + yyerror(& @1, state, "invalid vertex program header"); + } + state->mode = ARB_fragment; + + state->option.TexRect = + (state->ctx->Extensions.NV_texture_rectangle != GL_FALSE); + } + ; + +optionSequence: optionSequence option + | + ; + +option: OPTION IDENTIFIER ';' + { + int valid = 0; + + if (state->mode == ARB_vertex) { + valid = _mesa_ARBvp_parse_option(state, $2); + } else if (state->mode == ARB_fragment) { + valid = _mesa_ARBfp_parse_option(state, $2); + } + + + if (!valid) { + const char *const err_str = (state->mode == ARB_vertex) + ? "invalid ARB vertex program option" + : "invalid ARB fragment program option"; + + yyerror(& @2, state, err_str); + YYERROR; + } + } + ; + +statementSequence: statementSequence statement + | + ; + +statement: instruction ';' + { + if ($1 != NULL) { + if (state->inst_tail == NULL) { + state->inst_head = $1; + } else { + state->inst_tail->next = $1; + } + + state->inst_tail = $1; + $1->next = NULL; + + state->prog->NumInstructions++; + } + } + | namingStatement ';' + ; + +instruction: ALU_instruction + { + $$ = $1; + state->prog->NumAluInstructions++; + } + | TexInstruction + { + $$ = $1; + state->prog->NumTexInstructions++; + } + ; + +ALU_instruction: ARL_instruction + | VECTORop_instruction + | SCALARop_instruction + | BINSCop_instruction + | BINop_instruction + | TRIop_instruction + | SWZ_instruction + ; + +TexInstruction: SAMPLE_instruction + | KIL_instruction + ; + +ARL_instruction: ARL maskedAddrReg ',' scalarSrcReg + { + $$ = asm_instruction_ctor(OPCODE_ARL, & $2, & $4, NULL, NULL); + } + ; + +VECTORop_instruction: VECTOR_OP maskedDstReg ',' swizzleSrcReg + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, NULL, NULL); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + +SCALARop_instruction: SCALAR_OP maskedDstReg ',' scalarSrcReg + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, NULL, NULL); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + +BINSCop_instruction: BINSC_OP maskedDstReg ',' scalarSrcReg ',' scalarSrcReg + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, & $6, NULL); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + + +BINop_instruction: BIN_OP maskedDstReg ',' swizzleSrcReg ',' swizzleSrcReg + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, & $6, NULL); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + +TRIop_instruction: TRI_OP maskedDstReg ',' + swizzleSrcReg ',' swizzleSrcReg ',' swizzleSrcReg + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, & $6, & $8); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + +SAMPLE_instruction: SAMPLE_OP maskedDstReg ',' swizzleSrcReg ',' texImageUnit ',' texTarget + { + $$ = asm_instruction_ctor($1.Opcode, & $2, & $4, NULL, NULL); + if ($$ != NULL) { + const GLbitfield tex_mask = (1U << $6); + GLbitfield shadow_tex = 0; + GLbitfield target_mask = 0; + + + $$->Base.SaturateMode = $1.SaturateMode; + $$->Base.TexSrcUnit = $6; + + if ($8 < 0) { + shadow_tex = tex_mask; + + $$->Base.TexSrcTarget = -$8; + $$->Base.TexShadow = 1; + } else { + $$->Base.TexSrcTarget = $8; + } + + target_mask = (1U << $$->Base.TexSrcTarget); + + /* If this texture unit was previously accessed and that access + * had a different texture target, generate an error. + * + * If this texture unit was previously accessed and that access + * had a different shadow mode, generate an error. + */ + if ((state->prog->TexturesUsed[$6] != 0) + && ((state->prog->TexturesUsed[$6] != target_mask) + || ((state->prog->ShadowSamplers & tex_mask) + != shadow_tex))) { + yyerror(& @8, state, + "multiple targets used on one texture image unit"); + YYERROR; + } + + + state->prog->TexturesUsed[$6] |= target_mask; + state->prog->ShadowSamplers |= shadow_tex; + } + } + ; + +KIL_instruction: KIL swizzleSrcReg + { + $$ = asm_instruction_ctor(OPCODE_KIL, NULL, & $2, NULL, NULL); + state->fragment.UsesKill = 1; + } + ; + +texImageUnit: TEXTURE_UNIT optTexImageUnitNum + { + $$ = $2; + } + ; + +texTarget: TEX_1D { $$ = TEXTURE_1D_INDEX; } + | TEX_2D { $$ = TEXTURE_2D_INDEX; } + | TEX_3D { $$ = TEXTURE_3D_INDEX; } + | TEX_CUBE { $$ = TEXTURE_CUBE_INDEX; } + | TEX_RECT { $$ = TEXTURE_RECT_INDEX; } + | TEX_SHADOW1D { $$ = -TEXTURE_1D_INDEX; } + | TEX_SHADOW2D { $$ = -TEXTURE_2D_INDEX; } + | TEX_SHADOWRECT { $$ = -TEXTURE_RECT_INDEX; } + | TEX_ARRAY1D { $$ = TEXTURE_1D_ARRAY_INDEX; } + | TEX_ARRAY2D { $$ = TEXTURE_2D_ARRAY_INDEX; } + | TEX_ARRAYSHADOW1D { $$ = -TEXTURE_1D_ARRAY_INDEX; } + | TEX_ARRAYSHADOW2D { $$ = -TEXTURE_2D_ARRAY_INDEX; } + ; + +SWZ_instruction: SWZ maskedDstReg ',' srcReg ',' extendedSwizzle + { + /* FIXME: Is this correct? Should the extenedSwizzle be applied + * FIXME: to the existing swizzle? + */ + $4.Base.Swizzle = $6.swizzle; + $4.Base.Negate = $6.mask; + + $$ = asm_instruction_ctor(OPCODE_SWZ, & $2, & $4, NULL, NULL); + $$->Base.SaturateMode = $1.SaturateMode; + } + ; + +scalarSrcReg: optionalSign srcReg scalarSuffix + { + $$ = $2; + + if ($1) { + $$.Base.Negate = ~$$.Base.Negate; + } + + $$.Base.Swizzle = _mesa_combine_swizzles($$.Base.Swizzle, + $3.swizzle); + } + ; + +swizzleSrcReg: optionalSign srcReg swizzleSuffix + { + $$ = $2; + + if ($1) { + $$.Base.Negate = ~$$.Base.Negate; + } + + $$.Base.Swizzle = _mesa_combine_swizzles($$.Base.Swizzle, + $3.swizzle); + } + ; + +maskedDstReg: dstReg optionalMask + { + $$ = $1; + $$.WriteMask = $2.mask; + + if ($$.File == PROGRAM_OUTPUT) { + /* Technically speaking, this should check that it is in + * vertex program mode. However, PositionInvariant can never be + * set in fragment program mode, so it is somewhat irrelevant. + */ + if (state->option.PositionInvariant + && ($$.Index == VERT_RESULT_HPOS)) { + yyerror(& @1, state, "position-invariant programs cannot " + "write position"); + YYERROR; + } + + state->prog->OutputsWritten |= (1U << $$.Index); + } + } + ; + +maskedAddrReg: addrReg addrWriteMask + { + init_dst_reg(& $$); + $$.File = PROGRAM_ADDRESS; + $$.Index = 0; + $$.WriteMask = $2.mask; + } + ; + +extendedSwizzle: extSwizComp ',' extSwizComp ',' extSwizComp ',' extSwizComp + { + const unsigned xyzw_valid = + ($1.xyzw_valid << 0) + | ($3.xyzw_valid << 1) + | ($5.xyzw_valid << 2) + | ($7.xyzw_valid << 3); + const unsigned rgba_valid = + ($1.rgba_valid << 0) + | ($3.rgba_valid << 1) + | ($5.rgba_valid << 2) + | ($7.rgba_valid << 3); + + /* All of the swizzle components have to be valid in either RGBA + * or XYZW. Note that 0 and 1 are valid in both, so both masks + * can have some bits set. + * + * We somewhat deviate from the spec here. It would be really hard + * to figure out which component is the error, and there probably + * isn't a lot of benefit. + */ + if ((rgba_valid != 0x0f) && (xyzw_valid != 0x0f)) { + yyerror(& @1, state, "cannot combine RGBA and XYZW swizzle " + "components"); + YYERROR; + } + + $$.swizzle = MAKE_SWIZZLE4($1.swz, $3.swz, $5.swz, $7.swz); + $$.mask = ($1.negate) | ($3.negate << 1) | ($5.negate << 2) + | ($7.negate << 3); + } + ; + +extSwizComp: optionalSign extSwizSel + { + $$ = $2; + $$.negate = ($1) ? 1 : 0; + } + ; + +extSwizSel: INTEGER + { + if (($1 != 0) && ($1 != 1)) { + yyerror(& @1, state, "invalid extended swizzle selector"); + YYERROR; + } + + $$.swz = ($1 == 0) ? SWIZZLE_ZERO : SWIZZLE_ONE; + + /* 0 and 1 are valid for both RGBA swizzle names and XYZW + * swizzle names. + */ + $$.xyzw_valid = 1; + $$.rgba_valid = 1; + } + | IDENTIFIER + { + if (strlen($1) > 1) { + yyerror(& @1, state, "invalid extended swizzle selector"); + YYERROR; + } + + switch ($1[0]) { + case 'x': + $$.swz = SWIZZLE_X; + $$.xyzw_valid = 1; + break; + case 'y': + $$.swz = SWIZZLE_Y; + $$.xyzw_valid = 1; + break; + case 'z': + $$.swz = SWIZZLE_Z; + $$.xyzw_valid = 1; + break; + case 'w': + $$.swz = SWIZZLE_W; + $$.xyzw_valid = 1; + break; + + case 'r': + $$.swz = SWIZZLE_X; + $$.rgba_valid = 1; + break; + case 'g': + $$.swz = SWIZZLE_Y; + $$.rgba_valid = 1; + break; + case 'b': + $$.swz = SWIZZLE_Z; + $$.rgba_valid = 1; + break; + case 'a': + $$.swz = SWIZZLE_W; + $$.rgba_valid = 1; + break; + + default: + yyerror(& @1, state, "invalid extended swizzle selector"); + YYERROR; + break; + } + } + ; + +srcReg: IDENTIFIER /* temporaryReg | progParamSingle */ + { + struct asm_symbol *const s = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $1); + + if (s == NULL) { + yyerror(& @1, state, "invalid operand variable"); + YYERROR; + } else if ((s->type != at_param) && (s->type != at_temp) + && (s->type != at_attrib)) { + yyerror(& @1, state, "invalid operand variable"); + YYERROR; + } else if ((s->type == at_param) && s->param_is_array) { + yyerror(& @1, state, "non-array access to array PARAM"); + YYERROR; + } + + init_src_reg(& $$); + switch (s->type) { + case at_temp: + $$.Base.File = PROGRAM_TEMPORARY; + $$.Base.Index = s->temp_binding; + break; + case at_param: + $$.Base.File = s->param_binding_type; + $$.Base.Index = s->param_binding_begin; + break; + case at_attrib: + $$.Base.File = PROGRAM_INPUT; + $$.Base.Index = s->attrib_binding; + state->prog->InputsRead |= (1U << $$.Base.Index); + + if (!validate_inputs(& @1, state)) { + YYERROR; + } + break; + + default: + YYERROR; + break; + } + } + | attribBinding + { + init_src_reg(& $$); + $$.Base.File = PROGRAM_INPUT; + $$.Base.Index = $1; + state->prog->InputsRead |= (1U << $$.Base.Index); + + if (!validate_inputs(& @1, state)) { + YYERROR; + } + } + | progParamArray '[' progParamArrayMem ']' + { + if (! $3.Base.RelAddr + && ((unsigned) $3.Base.Index >= $1->param_binding_length)) { + yyerror(& @3, state, "out of bounds array access"); + YYERROR; + } + + init_src_reg(& $$); + $$.Base.File = $1->param_binding_type; + + if ($3.Base.RelAddr) { + $1->param_accessed_indirectly = 1; + + $$.Base.RelAddr = 1; + $$.Base.Index = $3.Base.Index; + $$.Symbol = $1; + } else { + $$.Base.Index = $1->param_binding_begin + $3.Base.Index; + } + } + | paramSingleItemUse + { + init_src_reg(& $$); + $$.Base.File = ($1.name != NULL) + ? $1.param_binding_type + : PROGRAM_CONSTANT; + $$.Base.Index = $1.param_binding_begin; + } + ; + +dstReg: resultBinding + { + init_dst_reg(& $$); + $$.File = PROGRAM_OUTPUT; + $$.Index = $1; + } + | IDENTIFIER /* temporaryReg | vertexResultReg */ + { + struct asm_symbol *const s = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $1); + + if (s == NULL) { + yyerror(& @1, state, "invalid operand variable"); + YYERROR; + } else if ((s->type != at_output) && (s->type != at_temp)) { + yyerror(& @1, state, "invalid operand variable"); + YYERROR; + } + + init_dst_reg(& $$); + switch (s->type) { + case at_temp: + $$.File = PROGRAM_TEMPORARY; + $$.Index = s->temp_binding; + break; + case at_output: + $$.File = PROGRAM_OUTPUT; + $$.Index = s->output_binding; + break; + default: + $$.File = s->param_binding_type; + $$.Index = s->param_binding_begin; + break; + } + } + ; + +progParamArray: IDENTIFIER + { + struct asm_symbol *const s = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $1); + + if (s == NULL) { + yyerror(& @1, state, "invalid operand variable"); + YYERROR; + } else if ((s->type != at_param) || !s->param_is_array) { + yyerror(& @1, state, "array access to non-PARAM variable"); + YYERROR; + } else { + $$ = s; + } + } + ; + +progParamArrayMem: progParamArrayAbs | progParamArrayRel; + +progParamArrayAbs: INTEGER + { + init_src_reg(& $$); + $$.Base.Index = $1; + } + ; + +progParamArrayRel: addrReg addrComponent addrRegRelOffset + { + /* FINISHME: Add support for multiple address registers. + */ + /* FINISHME: Add support for 4-component address registers. + */ + init_src_reg(& $$); + $$.Base.RelAddr = 1; + $$.Base.Index = $3; + } + ; + +addrRegRelOffset: { $$ = 0; } + | '+' addrRegPosOffset { $$ = $2; } + | '-' addrRegNegOffset { $$ = -$2; } + ; + +addrRegPosOffset: INTEGER + { + if (($1 < 0) || ($1 > 63)) { + yyerror(& @1, state, + "relative address offset too large (positive)"); + YYERROR; + } else { + $$ = $1; + } + } + ; + +addrRegNegOffset: INTEGER + { + if (($1 < 0) || ($1 > 64)) { + yyerror(& @1, state, + "relative address offset too large (negative)"); + YYERROR; + } else { + $$ = $1; + } + } + ; + +addrReg: IDENTIFIER + { + struct asm_symbol *const s = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $1); + + if (s == NULL) { + yyerror(& @1, state, "invalid array member"); + YYERROR; + } else if (s->type != at_address) { + yyerror(& @1, state, + "invalid variable for indexed array access"); + YYERROR; + } else { + $$ = s; + } + } + ; + +addrComponent: MASK1 + { + if ($1.mask != WRITEMASK_X) { + yyerror(& @1, state, "invalid address component selector"); + YYERROR; + } else { + $$ = $1; + } + } + ; + +addrWriteMask: MASK1 + { + if ($1.mask != WRITEMASK_X) { + yyerror(& @1, state, + "address register write mask must be \".x\""); + YYERROR; + } else { + $$ = $1; + } + } + ; + +scalarSuffix: MASK1; + +swizzleSuffix: MASK1 + | MASK4 + | SWIZZLE + | { $$.swizzle = SWIZZLE_NOOP; $$.mask = WRITEMASK_XYZW; } + ; + +optionalMask: MASK4 | MASK3 | MASK2 | MASK1 + | { $$.swizzle = SWIZZLE_NOOP; $$.mask = WRITEMASK_XYZW; } + ; + +namingStatement: ATTRIB_statement + | PARAM_statement + | TEMP_statement + | ADDRESS_statement + | OUTPUT_statement + | ALIAS_statement + ; + +ATTRIB_statement: ATTRIB IDENTIFIER '=' attribBinding + { + struct asm_symbol *const s = + declare_variable(state, $2, at_attrib, & @2); + + if (s == NULL) { + YYERROR; + } else { + s->attrib_binding = $4; + state->InputsBound |= (1U << s->attrib_binding); + + if (!validate_inputs(& @4, state)) { + YYERROR; + } + } + } + ; + +attribBinding: VERTEX vtxAttribItem + { + $$ = $2; + } + | FRAGMENT fragAttribItem + { + $$ = $2; + } + ; + +vtxAttribItem: POSITION + { + $$ = VERT_ATTRIB_POS; + } + | WEIGHT vtxOptWeightNum + { + $$ = VERT_ATTRIB_WEIGHT; + } + | NORMAL + { + $$ = VERT_ATTRIB_NORMAL; + } + | COLOR optColorType + { + if (!state->ctx->Extensions.EXT_secondary_color) { + yyerror(& @2, state, "GL_EXT_secondary_color not supported"); + YYERROR; + } + + $$ = VERT_ATTRIB_COLOR0 + $2; + } + | FOGCOORD + { + if (!state->ctx->Extensions.EXT_fog_coord) { + yyerror(& @1, state, "GL_EXT_fog_coord not supported"); + YYERROR; + } + + $$ = VERT_ATTRIB_FOG; + } + | TEXCOORD optTexCoordUnitNum + { + $$ = VERT_ATTRIB_TEX0 + $2; + } + | MATRIXINDEX '[' vtxWeightNum ']' + { + yyerror(& @1, state, "GL_ARB_matrix_palette not supported"); + YYERROR; + } + | VTXATTRIB '[' vtxAttribNum ']' + { + $$ = VERT_ATTRIB_GENERIC0 + $3; + } + ; + +vtxAttribNum: INTEGER + { + if ((unsigned) $1 >= state->limits->MaxAttribs) { + yyerror(& @1, state, "invalid vertex attribute reference"); + YYERROR; + } + + $$ = $1; + } + ; + +vtxOptWeightNum: | '[' vtxWeightNum ']'; +vtxWeightNum: INTEGER; + +fragAttribItem: POSITION + { + $$ = FRAG_ATTRIB_WPOS; + } + | COLOR optColorType + { + $$ = FRAG_ATTRIB_COL0 + $2; + } + | FOGCOORD + { + $$ = FRAG_ATTRIB_FOGC; + } + | TEXCOORD optTexCoordUnitNum + { + $$ = FRAG_ATTRIB_TEX0 + $2; + } + ; + +PARAM_statement: PARAM_singleStmt | PARAM_multipleStmt; + +PARAM_singleStmt: PARAM IDENTIFIER paramSingleInit + { + struct asm_symbol *const s = + declare_variable(state, $2, at_param, & @2); + + if (s == NULL) { + YYERROR; + } else { + s->param_binding_type = $3.param_binding_type; + s->param_binding_begin = $3.param_binding_begin; + s->param_binding_length = $3.param_binding_length; + s->param_is_array = 0; + } + } + ; + +PARAM_multipleStmt: PARAM IDENTIFIER '[' optArraySize ']' paramMultipleInit + { + if (($4 != 0) && ((unsigned) $4 != $6.param_binding_length)) { + yyerror(& @4, state, + "parameter array size and number of bindings must match"); + YYERROR; + } else { + struct asm_symbol *const s = + declare_variable(state, $2, $6.type, & @2); + + if (s == NULL) { + YYERROR; + } else { + s->param_binding_type = $6.param_binding_type; + s->param_binding_begin = $6.param_binding_begin; + s->param_binding_length = $6.param_binding_length; + s->param_is_array = 1; + } + } + } + ; + +optArraySize: + { + $$ = 0; + } + | INTEGER + { + if (($1 < 1) || ((unsigned) $1 >= state->limits->MaxParameters)) { + yyerror(& @1, state, "invalid parameter array size"); + YYERROR; + } else { + $$ = $1; + } + } + ; + +paramSingleInit: '=' paramSingleItemDecl + { + $$ = $2; + } + ; + +paramMultipleInit: '=' '{' paramMultInitList '}' + { + $$ = $3; + } + ; + +paramMultInitList: paramMultipleItem + | paramMultInitList ',' paramMultipleItem + { + $1.param_binding_length += $3.param_binding_length; + $$ = $1; + } + ; + +paramSingleItemDecl: stateSingleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_state(state->prog, & $$, $1); + } + | programSingleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_param(state->prog, & $$, $1); + } + | paramConstDecl + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_const(state->prog, & $$, & $1); + } + ; + +paramSingleItemUse: stateSingleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_state(state->prog, & $$, $1); + } + | programSingleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_param(state->prog, & $$, $1); + } + | paramConstUse + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_const(state->prog, & $$, & $1); + } + ; + +paramMultipleItem: stateMultipleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_state(state->prog, & $$, $1); + } + | programMultipleItem + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_param(state->prog, & $$, $1); + } + | paramConstDecl + { + memset(& $$, 0, sizeof($$)); + $$.param_binding_begin = ~0; + initialize_symbol_from_const(state->prog, & $$, & $1); + } + ; + +stateMultipleItem: stateSingleItem { memcpy($$, $1, sizeof($$)); } + | STATE stateMatrixRows { memcpy($$, $2, sizeof($$)); } + ; + +stateSingleItem: STATE stateMaterialItem { memcpy($$, $2, sizeof($$)); } + | STATE stateLightItem { memcpy($$, $2, sizeof($$)); } + | STATE stateLightModelItem { memcpy($$, $2, sizeof($$)); } + | STATE stateLightProdItem { memcpy($$, $2, sizeof($$)); } + | STATE stateTexGenItem { memcpy($$, $2, sizeof($$)); } + | STATE stateTexEnvItem { memcpy($$, $2, sizeof($$)); } + | STATE stateFogItem { memcpy($$, $2, sizeof($$)); } + | STATE stateClipPlaneItem { memcpy($$, $2, sizeof($$)); } + | STATE statePointItem { memcpy($$, $2, sizeof($$)); } + | STATE stateMatrixRow { memcpy($$, $2, sizeof($$)); } + | STATE stateDepthItem { memcpy($$, $2, sizeof($$)); } + ; + +stateMaterialItem: MATERIAL optFaceType stateMatProperty + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_MATERIAL; + $$[1] = $2; + $$[2] = $3; + } + ; + +stateMatProperty: ambDiffSpecProperty + { + $$ = $1; + } + | EMISSION + { + $$ = STATE_EMISSION; + } + | SHININESS + { + $$ = STATE_SHININESS; + } + ; + +stateLightItem: LIGHT '[' stateLightNumber ']' stateLightProperty + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_LIGHT; + $$[1] = $3; + $$[2] = $5; + } + ; + +stateLightProperty: ambDiffSpecProperty + { + $$ = $1; + } + | POSITION + { + $$ = STATE_POSITION; + } + | ATTENUATION + { + if (!state->ctx->Extensions.EXT_point_parameters) { + yyerror(& @1, state, "GL_ARB_point_parameters not supported"); + YYERROR; + } + + $$ = STATE_ATTENUATION; + } + | SPOT stateSpotProperty + { + $$ = $2; + } + | HALF + { + $$ = STATE_HALF_VECTOR; + } + ; + +stateSpotProperty: DIRECTION + { + $$ = STATE_SPOT_DIRECTION; + } + ; + +stateLightModelItem: LIGHTMODEL stateLModProperty + { + $$[0] = $2[0]; + $$[1] = $2[1]; + } + ; + +stateLModProperty: AMBIENT + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_LIGHTMODEL_AMBIENT; + } + | optFaceType SCENECOLOR + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_LIGHTMODEL_SCENECOLOR; + $$[1] = $1; + } + ; + +stateLightProdItem: LIGHTPROD '[' stateLightNumber ']' optFaceType stateLProdProperty + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_LIGHTPROD; + $$[1] = $3; + $$[2] = $5; + $$[3] = $6; + } + ; + +stateLProdProperty: ambDiffSpecProperty; + +stateTexEnvItem: TEXENV optLegacyTexUnitNum stateTexEnvProperty + { + memset($$, 0, sizeof($$)); + $$[0] = $3; + $$[1] = $2; + } + ; + +stateTexEnvProperty: COLOR + { + $$ = STATE_TEXENV_COLOR; + } + ; + +ambDiffSpecProperty: AMBIENT + { + $$ = STATE_AMBIENT; + } + | DIFFUSE + { + $$ = STATE_DIFFUSE; + } + | SPECULAR + { + $$ = STATE_SPECULAR; + } + ; + +stateLightNumber: INTEGER + { + if ((unsigned) $1 >= state->MaxLights) { + yyerror(& @1, state, "invalid light selector"); + YYERROR; + } + + $$ = $1; + } + ; + +stateTexGenItem: TEXGEN optTexCoordUnitNum stateTexGenType stateTexGenCoord + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_TEXGEN; + $$[1] = $2; + $$[2] = $3 + $4; + } + ; + +stateTexGenType: EYE + { + $$ = STATE_TEXGEN_EYE_S; + } + | OBJECT + { + $$ = STATE_TEXGEN_OBJECT_S; + } + ; +stateTexGenCoord: TEXGEN_S + { + $$ = STATE_TEXGEN_EYE_S - STATE_TEXGEN_EYE_S; + } + | TEXGEN_T + { + $$ = STATE_TEXGEN_EYE_T - STATE_TEXGEN_EYE_S; + } + | TEXGEN_R + { + $$ = STATE_TEXGEN_EYE_R - STATE_TEXGEN_EYE_S; + } + | TEXGEN_Q + { + $$ = STATE_TEXGEN_EYE_Q - STATE_TEXGEN_EYE_S; + } + ; + +stateFogItem: FOG stateFogProperty + { + memset($$, 0, sizeof($$)); + $$[0] = $2; + } + ; + +stateFogProperty: COLOR + { + $$ = STATE_FOG_COLOR; + } + | PARAMS + { + $$ = STATE_FOG_PARAMS; + } + ; + +stateClipPlaneItem: CLIP '[' stateClipPlaneNum ']' PLANE + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_CLIPPLANE; + $$[1] = $3; + } + ; + +stateClipPlaneNum: INTEGER + { + if ((unsigned) $1 >= state->MaxClipPlanes) { + yyerror(& @1, state, "invalid clip plane selector"); + YYERROR; + } + + $$ = $1; + } + ; + +statePointItem: POINT statePointProperty + { + memset($$, 0, sizeof($$)); + $$[0] = $2; + } + ; + +statePointProperty: SIZE + { + $$ = STATE_POINT_SIZE; + } + | ATTENUATION + { + $$ = STATE_POINT_ATTENUATION; + } + ; + +stateMatrixRow: stateMatrixItem ROW '[' stateMatrixRowNum ']' + { + $$[0] = $1[0]; + $$[1] = $1[1]; + $$[2] = $4; + $$[3] = $4; + $$[4] = $1[2]; + } + ; + +stateMatrixRows: stateMatrixItem optMatrixRows + { + $$[0] = $1[0]; + $$[1] = $1[1]; + $$[2] = $2[2]; + $$[3] = $2[3]; + $$[4] = $1[2]; + } + ; + +optMatrixRows: + { + $$[2] = 0; + $$[3] = 3; + } + | ROW '[' stateMatrixRowNum DOT_DOT stateMatrixRowNum ']' + { + /* It seems logical that the matrix row range specifier would have + * to specify a range or more than one row (i.e., $5 > $3). + * However, the ARB_vertex_program spec says "a program will fail + * to load if <a> is greater than <b>." This means that $3 == $5 + * is valid. + */ + if ($3 > $5) { + yyerror(& @3, state, "invalid matrix row range"); + YYERROR; + } + + $$[2] = $3; + $$[3] = $5; + } + ; + +stateMatrixItem: MATRIX stateMatrixName stateOptMatModifier + { + $$[0] = $2[0]; + $$[1] = $2[1]; + $$[2] = $3; + } + ; + +stateOptMatModifier: + { + $$ = 0; + } + | stateMatModifier + { + $$ = $1; + } + ; + +stateMatModifier: INVERSE + { + $$ = STATE_MATRIX_INVERSE; + } + | TRANSPOSE + { + $$ = STATE_MATRIX_TRANSPOSE; + } + | INVTRANS + { + $$ = STATE_MATRIX_INVTRANS; + } + ; + +stateMatrixRowNum: INTEGER + { + if ($1 > 3) { + yyerror(& @1, state, "invalid matrix row reference"); + YYERROR; + } + + $$ = $1; + } + ; + +stateMatrixName: MODELVIEW stateOptModMatNum + { + $$[0] = STATE_MODELVIEW_MATRIX; + $$[1] = $2; + } + | PROJECTION + { + $$[0] = STATE_PROJECTION_MATRIX; + $$[1] = 0; + } + | MVP + { + $$[0] = STATE_MVP_MATRIX; + $$[1] = 0; + } + | TEXTURE optTexCoordUnitNum + { + $$[0] = STATE_TEXTURE_MATRIX; + $$[1] = $2; + } + | PALETTE '[' statePaletteMatNum ']' + { + yyerror(& @1, state, "GL_ARB_matrix_palette not supported"); + YYERROR; + } + | MAT_PROGRAM '[' stateProgramMatNum ']' + { + $$[0] = STATE_PROGRAM_MATRIX; + $$[1] = $3; + } + ; + +stateOptModMatNum: + { + $$ = 0; + } + | stateModMatNum + { + $$ = $1; + } + ; +stateModMatNum: INTEGER + { + /* Since GL_ARB_vertex_blend isn't supported, only modelview matrix + * zero is valid. + */ + if ($1 != 0) { + yyerror(& @1, state, "invalid modelview matrix index"); + YYERROR; + } + + $$ = $1; + } + ; +statePaletteMatNum: INTEGER + { + /* Since GL_ARB_matrix_palette isn't supported, just let any value + * through here. The error will be generated later. + */ + $$ = $1; + } + ; +stateProgramMatNum: INTEGER + { + if ((unsigned) $1 >= state->MaxProgramMatrices) { + yyerror(& @1, state, "invalid program matrix selector"); + YYERROR; + } + + $$ = $1; + } + ; + +stateDepthItem: DEPTH RANGE + { + memset($$, 0, sizeof($$)); + $$[0] = STATE_DEPTH_RANGE; + } + ; + + +programSingleItem: progEnvParam | progLocalParam; + +programMultipleItem: progEnvParams | progLocalParams; + +progEnvParams: PROGRAM ENV '[' progEnvParamNums ']' + { + memset($$, 0, sizeof($$)); + $$[0] = state->state_param_enum; + $$[1] = STATE_ENV; + $$[2] = $4[0]; + $$[3] = $4[1]; + } + ; + +progEnvParamNums: progEnvParamNum + { + $$[0] = $1; + $$[1] = $1; + } + | progEnvParamNum DOT_DOT progEnvParamNum + { + $$[0] = $1; + $$[1] = $3; + } + ; + +progEnvParam: PROGRAM ENV '[' progEnvParamNum ']' + { + memset($$, 0, sizeof($$)); + $$[0] = state->state_param_enum; + $$[1] = STATE_ENV; + $$[2] = $4; + $$[3] = $4; + } + ; + +progLocalParams: PROGRAM LOCAL '[' progLocalParamNums ']' + { + memset($$, 0, sizeof($$)); + $$[0] = state->state_param_enum; + $$[1] = STATE_LOCAL; + $$[2] = $4[0]; + $$[3] = $4[1]; + } + +progLocalParamNums: progLocalParamNum + { + $$[0] = $1; + $$[1] = $1; + } + | progLocalParamNum DOT_DOT progLocalParamNum + { + $$[0] = $1; + $$[1] = $3; + } + ; + +progLocalParam: PROGRAM LOCAL '[' progLocalParamNum ']' + { + memset($$, 0, sizeof($$)); + $$[0] = state->state_param_enum; + $$[1] = STATE_LOCAL; + $$[2] = $4; + $$[3] = $4; + } + ; + +progEnvParamNum: INTEGER + { + if ((unsigned) $1 >= state->limits->MaxEnvParams) { + yyerror(& @1, state, "invalid environment parameter reference"); + YYERROR; + } + $$ = $1; + } + ; + +progLocalParamNum: INTEGER + { + if ((unsigned) $1 >= state->limits->MaxLocalParams) { + yyerror(& @1, state, "invalid local parameter reference"); + YYERROR; + } + $$ = $1; + } + ; + + + +paramConstDecl: paramConstScalarDecl | paramConstVector; +paramConstUse: paramConstScalarUse | paramConstVector; + +paramConstScalarDecl: signedFloatConstant + { + $$.count = 4; + $$.data[0] = $1; + $$.data[1] = $1; + $$.data[2] = $1; + $$.data[3] = $1; + } + ; + +paramConstScalarUse: REAL + { + $$.count = 1; + $$.data[0] = $1; + $$.data[1] = $1; + $$.data[2] = $1; + $$.data[3] = $1; + } + | INTEGER + { + $$.count = 1; + $$.data[0] = (float) $1; + $$.data[1] = (float) $1; + $$.data[2] = (float) $1; + $$.data[3] = (float) $1; + } + ; + +paramConstVector: '{' signedFloatConstant '}' + { + $$.count = 4; + $$.data[0] = $2; + $$.data[1] = 0.0f; + $$.data[2] = 0.0f; + $$.data[3] = 1.0f; + } + | '{' signedFloatConstant ',' signedFloatConstant '}' + { + $$.count = 4; + $$.data[0] = $2; + $$.data[1] = $4; + $$.data[2] = 0.0f; + $$.data[3] = 1.0f; + } + | '{' signedFloatConstant ',' signedFloatConstant ',' + signedFloatConstant '}' + { + $$.count = 4; + $$.data[0] = $2; + $$.data[1] = $4; + $$.data[2] = $6; + $$.data[3] = 1.0f; + } + | '{' signedFloatConstant ',' signedFloatConstant ',' + signedFloatConstant ',' signedFloatConstant '}' + { + $$.count = 4; + $$.data[0] = $2; + $$.data[1] = $4; + $$.data[2] = $6; + $$.data[3] = $8; + } + ; + +signedFloatConstant: optionalSign REAL + { + $$ = ($1) ? -$2 : $2; + } + | optionalSign INTEGER + { + $$ = (float)(($1) ? -$2 : $2); + } + ; + +optionalSign: '+' { $$ = FALSE; } + | '-' { $$ = TRUE; } + | { $$ = FALSE; } + ; + +TEMP_statement: TEMP { $<integer>$ = $1; } varNameList + ; + +ADDRESS_statement: ADDRESS { $<integer>$ = $1; } varNameList + ; + +varNameList: varNameList ',' IDENTIFIER + { + if (!declare_variable(state, $3, $<integer>0, & @3)) { + YYERROR; + } + } + | IDENTIFIER + { + if (!declare_variable(state, $1, $<integer>0, & @1)) { + YYERROR; + } + } + ; + +OUTPUT_statement: OUTPUT IDENTIFIER '=' resultBinding + { + struct asm_symbol *const s = + declare_variable(state, $2, at_output, & @2); + + if (s == NULL) { + YYERROR; + } else { + s->output_binding = $4; + } + } + ; + +resultBinding: RESULT POSITION + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_HPOS; + } else { + yyerror(& @2, state, "invalid program result name"); + YYERROR; + } + } + | RESULT FOGCOORD + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_FOGC; + } else { + yyerror(& @2, state, "invalid program result name"); + YYERROR; + } + } + | RESULT resultColBinding + { + $$ = $2; + } + | RESULT POINTSIZE + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_PSIZ; + } else { + yyerror(& @2, state, "invalid program result name"); + YYERROR; + } + } + | RESULT TEXCOORD optTexCoordUnitNum + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_TEX0 + $3; + } else { + yyerror(& @2, state, "invalid program result name"); + YYERROR; + } + } + | RESULT DEPTH + { + if (state->mode == ARB_fragment) { + $$ = FRAG_RESULT_DEPTH; + } else { + yyerror(& @2, state, "invalid program result name"); + YYERROR; + } + } + ; + +resultColBinding: COLOR optResultFaceType optResultColorType + { + $$ = $2 + $3; + } + ; + +optResultFaceType: + { + $$ = (state->mode == ARB_vertex) + ? VERT_RESULT_COL0 + : FRAG_RESULT_COLOR; + } + | FRONT + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_COL0; + } else { + yyerror(& @1, state, "invalid program result name"); + YYERROR; + } + } + | BACK + { + if (state->mode == ARB_vertex) { + $$ = VERT_RESULT_BFC0; + } else { + yyerror(& @1, state, "invalid program result name"); + YYERROR; + } + } + ; + +optResultColorType: + { + $$ = 0; + } + | PRIMARY + { + if (state->mode == ARB_vertex) { + $$ = 0; + } else { + yyerror(& @1, state, "invalid program result name"); + YYERROR; + } + } + | SECONDARY + { + if (state->mode == ARB_vertex) { + $$ = 1; + } else { + yyerror(& @1, state, "invalid program result name"); + YYERROR; + } + } + ; + +optFaceType: { $$ = 0; } + | FRONT { $$ = 0; } + | BACK { $$ = 1; } + ; + +optColorType: { $$ = 0; } + | PRIMARY { $$ = 0; } + | SECONDARY { $$ = 1; } + ; + +optTexCoordUnitNum: { $$ = 0; } + | '[' texCoordUnitNum ']' { $$ = $2; } + ; + +optTexImageUnitNum: { $$ = 0; } + | '[' texImageUnitNum ']' { $$ = $2; } + ; + +optLegacyTexUnitNum: { $$ = 0; } + | '[' legacyTexUnitNum ']' { $$ = $2; } + ; + +texCoordUnitNum: INTEGER + { + if ((unsigned) $1 >= state->MaxTextureCoordUnits) { + yyerror(& @1, state, "invalid texture coordinate unit selector"); + YYERROR; + } + + $$ = $1; + } + ; + +texImageUnitNum: INTEGER + { + if ((unsigned) $1 >= state->MaxTextureImageUnits) { + yyerror(& @1, state, "invalid texture image unit selector"); + YYERROR; + } + + $$ = $1; + } + ; + +legacyTexUnitNum: INTEGER + { + if ((unsigned) $1 >= state->MaxTextureUnits) { + yyerror(& @1, state, "invalid texture unit selector"); + YYERROR; + } + + $$ = $1; + } + ; + +ALIAS_statement: ALIAS IDENTIFIER '=' IDENTIFIER + { + struct asm_symbol *exist = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $2); + struct asm_symbol *target = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, $4); + + + if (exist != NULL) { + yyerror(& @2, state, "redeclared identifier"); + YYERROR; + } else if (target == NULL) { + yyerror(& @4, state, + "undefined variable binding in ALIAS statement"); + YYERROR; + } else { + _mesa_symbol_table_add_symbol(state->st, 0, $2, target); + } + } + ; + +%% + +struct asm_instruction * +asm_instruction_ctor(gl_inst_opcode op, + const struct prog_dst_register *dst, + const struct asm_src_register *src0, + const struct asm_src_register *src1, + const struct asm_src_register *src2) +{ + struct asm_instruction *inst = calloc(1, sizeof(struct asm_instruction)); + + if (inst) { + _mesa_init_instructions(& inst->Base, 1); + inst->Base.Opcode = op; + + /* In the core ARB extensions only the KIL instruction doesn't have a + * destination register. + */ + if (dst == NULL) { + init_dst_reg(& inst->Base.DstReg); + } else { + inst->Base.DstReg = *dst; + } + + inst->Base.SrcReg[0] = src0->Base; + inst->SrcReg[0] = *src0; + + if (src1 != NULL) { + inst->Base.SrcReg[1] = src1->Base; + inst->SrcReg[1] = *src1; + } else { + init_src_reg(& inst->SrcReg[1]); + } + + if (src2 != NULL) { + inst->Base.SrcReg[2] = src2->Base; + inst->SrcReg[2] = *src2; + } else { + init_src_reg(& inst->SrcReg[2]); + } + } + + return inst; +} + + +void +init_dst_reg(struct prog_dst_register *r) +{ + memset(r, 0, sizeof(*r)); + r->File = PROGRAM_UNDEFINED; + r->WriteMask = WRITEMASK_XYZW; + r->CondMask = COND_TR; + r->CondSwizzle = SWIZZLE_NOOP; +} + + +void +init_src_reg(struct asm_src_register *r) +{ + memset(r, 0, sizeof(*r)); + r->Base.File = PROGRAM_UNDEFINED; + r->Base.Swizzle = SWIZZLE_NOOP; + r->Symbol = NULL; +} + + +/** + * Validate the set of inputs used by a program + * + * Validates that legal sets of inputs are used by the program. In this case + * "used" included both reading the input or binding the input to a name using + * the \c ATTRIB command. + * + * \return + * \c TRUE if the combination of inputs used is valid, \c FALSE otherwise. + */ +int +validate_inputs(struct YYLTYPE *locp, struct asm_parser_state *state) +{ + const int inputs = state->prog->InputsRead | state->InputsBound; + + if (((inputs & 0x0ffff) & (inputs >> 16)) != 0) { + yyerror(locp, state, "illegal use of generic attribute and name attribute"); + return 0; + } + + return 1; +} + + +struct asm_symbol * +declare_variable(struct asm_parser_state *state, char *name, enum asm_type t, + struct YYLTYPE *locp) +{ + struct asm_symbol *s = NULL; + struct asm_symbol *exist = (struct asm_symbol *) + _mesa_symbol_table_find_symbol(state->st, 0, name); + + + if (exist != NULL) { + yyerror(locp, state, "redeclared identifier"); + } else { + s = calloc(1, sizeof(struct asm_symbol)); + s->name = name; + s->type = t; + + switch (t) { + case at_temp: + if (state->prog->NumTemporaries >= state->limits->MaxTemps) { + yyerror(locp, state, "too many temporaries declared"); + free(s); + return NULL; + } + + s->temp_binding = state->prog->NumTemporaries; + state->prog->NumTemporaries++; + break; + + case at_address: + if (state->prog->NumAddressRegs >= state->limits->MaxAddressRegs) { + yyerror(locp, state, "too many address registers declared"); + free(s); + return NULL; + } + + /* FINISHME: Add support for multiple address registers. + */ + state->prog->NumAddressRegs++; + break; + + default: + break; + } + + _mesa_symbol_table_add_symbol(state->st, 0, s->name, s); + s->next = state->sym; + state->sym = s; + } + + return s; +} + + +int add_state_reference(struct gl_program_parameter_list *param_list, + const gl_state_index tokens[STATE_LENGTH]) +{ + const GLuint size = 4; /* XXX fix */ + char *name; + GLint index; + + name = _mesa_program_state_string(tokens); + index = _mesa_add_parameter(param_list, PROGRAM_STATE_VAR, name, + size, GL_NONE, + NULL, (gl_state_index *) tokens, 0x0); + param_list->StateFlags |= _mesa_program_state_flags(tokens); + + /* free name string here since we duplicated it in add_parameter() */ + _mesa_free(name); + + return index; +} + + +int +initialize_symbol_from_state(struct gl_program *prog, + struct asm_symbol *param_var, + const gl_state_index tokens[STATE_LENGTH]) +{ + int idx = -1; + gl_state_index state_tokens[STATE_LENGTH]; + + + memcpy(state_tokens, tokens, sizeof(state_tokens)); + + param_var->type = at_param; + param_var->param_binding_type = PROGRAM_STATE_VAR; + + /* If we are adding a STATE_MATRIX that has multiple rows, we need to + * unroll it and call add_state_reference() for each row + */ + if ((state_tokens[0] == STATE_MODELVIEW_MATRIX || + state_tokens[0] == STATE_PROJECTION_MATRIX || + state_tokens[0] == STATE_MVP_MATRIX || + state_tokens[0] == STATE_TEXTURE_MATRIX || + state_tokens[0] == STATE_PROGRAM_MATRIX) + && (state_tokens[2] != state_tokens[3])) { + int row; + const int first_row = state_tokens[2]; + const int last_row = state_tokens[3]; + + for (row = first_row; row <= last_row; row++) { + state_tokens[2] = state_tokens[3] = row; + + idx = add_state_reference(prog->Parameters, state_tokens); + if (param_var->param_binding_begin == ~0U) + param_var->param_binding_begin = idx; + param_var->param_binding_length++; + } + } + else { + idx = add_state_reference(prog->Parameters, state_tokens); + if (param_var->param_binding_begin == ~0U) + param_var->param_binding_begin = idx; + param_var->param_binding_length++; + } + + return idx; +} + + +int +initialize_symbol_from_param(struct gl_program *prog, + struct asm_symbol *param_var, + const gl_state_index tokens[STATE_LENGTH]) +{ + int idx = -1; + gl_state_index state_tokens[STATE_LENGTH]; + + + memcpy(state_tokens, tokens, sizeof(state_tokens)); + + assert((state_tokens[0] == STATE_VERTEX_PROGRAM) + || (state_tokens[0] == STATE_FRAGMENT_PROGRAM)); + assert((state_tokens[1] == STATE_ENV) + || (state_tokens[1] == STATE_LOCAL)); + + param_var->type = at_param; + param_var->param_binding_type = (state_tokens[1] == STATE_ENV) + ? PROGRAM_ENV_PARAM : PROGRAM_LOCAL_PARAM; + + /* If we are adding a STATE_ENV or STATE_LOCAL that has multiple elements, + * we need to unroll it and call add_state_reference() for each row + */ + if (state_tokens[2] != state_tokens[3]) { + int row; + const int first_row = state_tokens[2]; + const int last_row = state_tokens[3]; + + for (row = first_row; row <= last_row; row++) { + state_tokens[2] = state_tokens[3] = row; + + idx = add_state_reference(prog->Parameters, state_tokens); + if (param_var->param_binding_begin == ~0U) + param_var->param_binding_begin = idx; + param_var->param_binding_length++; + } + } + else { + idx = add_state_reference(prog->Parameters, state_tokens); + if (param_var->param_binding_begin == ~0U) + param_var->param_binding_begin = idx; + param_var->param_binding_length++; + } + + return idx; +} + + +int +initialize_symbol_from_const(struct gl_program *prog, + struct asm_symbol *param_var, + const struct asm_vector *vec) +{ + const int idx = _mesa_add_parameter(prog->Parameters, PROGRAM_CONSTANT, + NULL, vec->count, GL_NONE, vec->data, + NULL, 0x0); + + param_var->type = at_param; + param_var->param_binding_type = PROGRAM_CONSTANT; + + if (param_var->param_binding_begin == ~0U) + param_var->param_binding_begin = idx; + param_var->param_binding_length++; + + return idx; +} + + +char * +make_error_string(const char *fmt, ...) +{ + int length; + char *str; + va_list args; + + va_start(args, fmt); + + /* Call vsnprintf once to determine how large the final string is. Call it + * again to do the actual formatting. from the vsnprintf manual page: + * + * Upon successful return, these functions return the number of + * characters printed (not including the trailing '\0' used to end + * output to strings). + */ + length = 1 + vsnprintf(NULL, 0, fmt, args); + + str = _mesa_malloc(length); + if (str) { + vsnprintf(str, length, fmt, args); + } + + va_end(args); + + return str; +} + + +void +yyerror(YYLTYPE *locp, struct asm_parser_state *state, const char *s) +{ + char *err_str; + + + err_str = make_error_string("glProgramStringARB(%s)\n", s); + if (err_str) { + _mesa_error(state->ctx, GL_INVALID_OPERATION, err_str); + _mesa_free(err_str); + } + + err_str = make_error_string("line %u, char %u: error: %s\n", + locp->first_line, locp->first_column, s); + _mesa_set_program_error(state->ctx, locp->position, err_str); + + if (err_str) { + _mesa_free(err_str); + } +} + + +GLboolean +_mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str, + GLsizei len, struct asm_parser_state *state) +{ + struct asm_instruction *inst; + unsigned i; + GLubyte *strz; + GLboolean result = GL_FALSE; + void *temp; + struct asm_symbol *sym; + + state->ctx = ctx; + state->prog->Target = target; + state->prog->Parameters = _mesa_new_parameter_list(); + + /* Make a copy of the program string and force it to be NUL-terminated. + */ + strz = (GLubyte *) _mesa_malloc(len + 1); + if (strz == NULL) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glProgramStringARB"); + return GL_FALSE; + } + _mesa_memcpy (strz, str, len); + strz[len] = '\0'; + + state->prog->String = strz; + + state->st = _mesa_symbol_table_ctor(); + + state->limits = (target == GL_VERTEX_PROGRAM_ARB) + ? & ctx->Const.VertexProgram + : & ctx->Const.FragmentProgram; + + state->MaxTextureImageUnits = 16; + state->MaxTextureCoordUnits = 8; + state->MaxTextureUnits = 8; + state->MaxClipPlanes = 6; + state->MaxLights = 8; + state->MaxProgramMatrices = 8; + + state->state_param_enum = (target == GL_VERTEX_PROGRAM_ARB) + ? STATE_VERTEX_PROGRAM : STATE_FRAGMENT_PROGRAM; + + _mesa_set_program_error(ctx, -1, NULL); + + _mesa_program_lexer_ctor(& state->scanner, state, (const char *) str, len); + yyparse(state); + _mesa_program_lexer_dtor(state->scanner); + + + if (ctx->Program.ErrorPos != -1) { + goto error; + } + + if (! _mesa_layout_parameters(state)) { + struct YYLTYPE loc; + + loc.first_line = 0; + loc.first_column = 0; + loc.position = len; + + yyerror(& loc, state, "invalid PARAM usage"); + goto error; + } + + + + /* Add one instruction to store the "END" instruction. + */ + state->prog->Instructions = + _mesa_alloc_instructions(state->prog->NumInstructions + 1); + inst = state->inst_head; + for (i = 0; i < state->prog->NumInstructions; i++) { + struct asm_instruction *const temp = inst->next; + + state->prog->Instructions[i] = inst->Base; + inst = temp; + } + + /* Finally, tag on an OPCODE_END instruction */ + { + const GLuint numInst = state->prog->NumInstructions; + _mesa_init_instructions(state->prog->Instructions + numInst, 1); + state->prog->Instructions[numInst].Opcode = OPCODE_END; + } + state->prog->NumInstructions++; + + state->prog->NumParameters = state->prog->Parameters->NumParameters; + state->prog->NumAttributes = _mesa_bitcount(state->prog->InputsRead); + + /* + * Initialize native counts to logical counts. The device driver may + * change them if program is translated into a hardware program. + */ + state->prog->NumNativeInstructions = state->prog->NumInstructions; + state->prog->NumNativeTemporaries = state->prog->NumTemporaries; + state->prog->NumNativeParameters = state->prog->NumParameters; + state->prog->NumNativeAttributes = state->prog->NumAttributes; + state->prog->NumNativeAddressRegs = state->prog->NumAddressRegs; + + result = GL_TRUE; + +error: + for (inst = state->inst_head; inst != NULL; inst = temp) { + temp = inst->next; + _mesa_free(inst); + } + + state->inst_head = NULL; + state->inst_tail = NULL; + + for (sym = state->sym; sym != NULL; sym = temp) { + temp = sym->next; + + _mesa_free((void *) sym->name); + _mesa_free(sym); + } + state->sym = NULL; + + _mesa_symbol_table_dtor(state->st); + state->st = NULL; + + return result; +} |