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gerrit-public.fairphone.software / platform / external / mesa3d / c7ac486261ad30ef654f6d0b1608da4e8483cd40 / . / src / mesa / shader / program_parse.y
blob: 577bd2c38d1353d364788bcbed3db2ee5ed2a330 [file] [log] [blame]
%{
/*
* 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 "shader/program.h"
#include "shader/prog_parameter.h"
#include "shader/prog_parameter_layout.h"
#include "shader/prog_statevars.h"
#include "shader/prog_instruction.h"
#include "shader/symbol_table.h"
#include "shader/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,
GLboolean allowSwizzle);
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 set_dst_reg(struct prog_dst_register *r,
gl_register_file file, GLint index);
static void init_src_reg(struct asm_src_register *r);
static void set_src_reg(struct asm_src_register *r,
gl_register_file file, GLint index);
static void set_src_reg_swz(struct asm_src_register *r,
gl_register_file file, GLint index, GLuint swizzle);
static void asm_instruction_set_operands(struct asm_instruction *inst,
const struct prog_dst_register *dst, const struct asm_src_register *src0,
const struct asm_src_register *src1, const struct asm_src_register *src2);
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);
static struct asm_instruction *asm_instruction_copy_ctor(
const struct prog_instruction *base, 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;
gl_state_index state[STATE_LENGTH];
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 TXD_OP
%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_TOK POINTSIZE POSITION PRIMARY PROGRAM PROJECTION
%token RANGE RESULT ROW
%token SCENECOLOR SECONDARY SHININESS SIZE_TOK 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 USED_IDENTIFIER
%type <string> string
%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 TXD_instruction SWZ_instruction SAMPLE_instruction
%type <inst> KIL_instruction
%type <dst_reg> dstReg maskedDstReg maskedAddrReg
%type <src_reg> srcReg scalarUse 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 <dst_reg> ccMaskRule ccTest ccMaskRule2 ccTest2 optionalCcMask
%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 string ';'
{
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);
}
free($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
| TXD_instruction
;
ARL_instruction: ARL maskedAddrReg ',' scalarSrcReg
{
$$ = asm_instruction_ctor(OPCODE_ARL, & $2, & $4, NULL, NULL);
}
;
VECTORop_instruction: VECTOR_OP maskedDstReg ',' swizzleSrcReg
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, NULL, NULL);
}
;
SCALARop_instruction: SCALAR_OP maskedDstReg ',' scalarSrcReg
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, NULL, NULL);
}
;
BINSCop_instruction: BINSC_OP maskedDstReg ',' scalarSrcReg ',' scalarSrcReg
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, & $6, NULL);
}
;
BINop_instruction: BIN_OP maskedDstReg ',' swizzleSrcReg ',' swizzleSrcReg
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, & $6, NULL);
}
;
TRIop_instruction: TRI_OP maskedDstReg ','
swizzleSrcReg ',' swizzleSrcReg ',' swizzleSrcReg
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, & $6, & $8);
}
;
SAMPLE_instruction: SAMPLE_OP maskedDstReg ',' swizzleSrcReg ',' texImageUnit ',' texTarget
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, NULL, NULL);
if ($$ != NULL) {
const GLbitfield tex_mask = (1U << $6);
GLbitfield shadow_tex = 0;
GLbitfield target_mask = 0;
$$->Base.TexSrcUnit = $6;
if ($8 < 0) {
shadow_tex = tex_mask;
$$->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;
}
| KIL ccTest
{
$$ = asm_instruction_ctor(OPCODE_KIL_NV, NULL, NULL, NULL, NULL);
$$->Base.DstReg.CondMask = $2.CondMask;
$$->Base.DstReg.CondSwizzle = $2.CondSwizzle;
$$->Base.DstReg.CondSrc = $2.CondSrc;
state->fragment.UsesKill = 1;
}
;
TXD_instruction: TXD_OP maskedDstReg ',' swizzleSrcReg ',' swizzleSrcReg ',' swizzleSrcReg ',' texImageUnit ',' texTarget
{
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, & $6, & $8);
if ($$ != NULL) {
const GLbitfield tex_mask = (1U << $10);
GLbitfield shadow_tex = 0;
GLbitfield target_mask = 0;
$$->Base.TexSrcUnit = $10;
if ($12 < 0) {
shadow_tex = tex_mask;
$$->Base.TexSrcTarget = -$12;
$$->Base.TexShadow = 1;
} else {
$$->Base.TexSrcTarget = $12;
}
target_mask = (1U << $$->Base.TexSrcTarget);
/* If this texture unit was previously accessed and that access
* had a different texture target, generate an error.
*
* If this texture unit was previously accessed and that access
* had a different shadow mode, generate an error.
*/
if ((state->prog->TexturesUsed[$10] != 0)
&& ((state->prog->TexturesUsed[$10] != target_mask)
|| ((state->prog->ShadowSamplers & tex_mask)
!= shadow_tex))) {
yyerror(& @12, state,
"multiple targets used on one texture image unit");
YYERROR;
}
state->prog->TexturesUsed[$10] |= target_mask;
state->prog->ShadowSamplers |= shadow_tex;
}
}
;
texImageUnit: TEXTURE_UNIT optTexImageUnitNum
{
$$ = $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;
$$ = asm_instruction_copy_ctor(& $1, & $2, & $4, NULL, NULL);
}
;
scalarSrcReg: optionalSign scalarUse
{
$$ = $2;
if ($1) {
$$.Base.Negate = ~$$.Base.Negate;
}
}
| optionalSign '|' scalarUse '|'
{
$$ = $3;
if (!state->option.NV_fragment) {
yyerror(& @2, state, "unexpected character '|'");
YYERROR;
}
if ($1) {
$$.Base.Negate = ~$$.Base.Negate;
}
$$.Base.Abs = 1;
}
;
scalarUse: srcReg scalarSuffix
{
$$ = $1;
$$.Base.Swizzle = _mesa_combine_swizzles($$.Base.Swizzle,
$2.swizzle);
}
| paramConstScalarUse
{
struct asm_symbol temp_sym;
if (!state->option.NV_fragment) {
yyerror(& @1, state, "expected scalar suffix");
YYERROR;
}
memset(& temp_sym, 0, sizeof(temp_sym));
temp_sym.param_binding_begin = ~0;
initialize_symbol_from_const(state->prog, & temp_sym, & $1, GL_TRUE);
set_src_reg_swz(& $$, PROGRAM_CONSTANT,
temp_sym.param_binding_begin,
temp_sym.param_binding_swizzle);
}
;
swizzleSrcReg: optionalSign srcReg swizzleSuffix
{
$$ = $2;
if ($1) {
$$.Base.Negate = ~$$.Base.Negate;
}
$$.Base.Swizzle = _mesa_combine_swizzles($$.Base.Swizzle,
$3.swizzle);
}
| optionalSign '|' srcReg swizzleSuffix '|'
{
$$ = $3;
if (!state->option.NV_fragment) {
yyerror(& @2, state, "unexpected character '|'");
YYERROR;
}
if ($1) {
$$.Base.Negate = ~$$.Base.Negate;
}
$$.Base.Abs = 1;
$$.Base.Swizzle = _mesa_combine_swizzles($$.Base.Swizzle,
$4.swizzle);
}
;
maskedDstReg: dstReg optionalMask optionalCcMask
{
$$ = $1;
$$.WriteMask = $2.mask;
$$.CondMask = $3.CondMask;
$$.CondSwizzle = $3.CondSwizzle;
$$.CondSrc = $3.CondSrc;
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 |= BITFIELD64_BIT($$.Index);
}
}
;
maskedAddrReg: addrReg addrWriteMask
{
set_dst_reg(& $$, PROGRAM_ADDRESS, 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;
}
| string
{
char s;
if (strlen($1) > 1) {
yyerror(& @1, state, "invalid extended swizzle selector");
YYERROR;
}
s = $1[0];
free($1);
switch (s) {
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: USED_IDENTIFIER /* temporaryReg | progParamSingle */
{
struct asm_symbol *const s = (struct asm_symbol *)
_mesa_symbol_table_find_symbol(state->st, 0, $1);
free($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(& $$);
switch (s->type) {
case at_temp:
set_src_reg(& $$, PROGRAM_TEMPORARY, s->temp_binding);
break;
case at_param:
set_src_reg_swz(& $$, s->param_binding_type,
s->param_binding_begin,
s->param_binding_swizzle);
break;
case at_attrib:
set_src_reg(& $$, PROGRAM_INPUT, s->attrib_binding);
state->prog->InputsRead |= (1U << $$.Base.Index);
if (!validate_inputs(& @1, state)) {
YYERROR;
}
break;
default:
YYERROR;
break;
}
}
| attribBinding
{
set_src_reg(& $$, PROGRAM_INPUT, $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 {
$$.Base.Index = $1->param_binding_begin + $3.Base.Index;
}
}
| paramSingleItemUse
{
gl_register_file file = ($1.name != NULL)
? $1.param_binding_type
: PROGRAM_CONSTANT;
set_src_reg_swz(& $$, file, $1.param_binding_begin,
$1.param_binding_swizzle);
}
;
dstReg: resultBinding
{
set_dst_reg(& $$, PROGRAM_OUTPUT, $1);
}
| USED_IDENTIFIER /* temporaryReg | vertexResultReg */
{
struct asm_symbol *const s = (struct asm_symbol *)
_mesa_symbol_table_find_symbol(state->st, 0, $1);
free($1);
if (s == NULL) {
yyerror(& @1, state, "invalid operand variable");
YYERROR;
} else if ((s->type != at_output) && (s->type != at_temp)) {
yyerror(& @1, state, "invalid operand variable");
YYERROR;
}
switch (s->type) {
case at_temp:
set_dst_reg(& $$, PROGRAM_TEMPORARY, s->temp_binding);
break;
case at_output:
set_dst_reg(& $$, PROGRAM_OUTPUT, s->output_binding);
break;
default:
set_dst_reg(& $$, s->param_binding_type, s->param_binding_begin);
break;
}
}
;
progParamArray: USED_IDENTIFIER
{
struct asm_symbol *const s = (struct asm_symbol *)
_mesa_symbol_table_find_symbol(state->st, 0, $1);
free($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 { $$ = -$2; }
;
addrRegPosOffset: INTEGER
{
if (($1 < 0) || ($1 > 63)) {
char s[100];
_mesa_snprintf(s, sizeof(s),
"relative address offset too large (%d)", $1);
yyerror(& @1, state, s);
YYERROR;
} else {
$$ = $1;
}
}
;
addrRegNegOffset: INTEGER
{
if (($1 < 0) || ($1 > 64)) {
char s[100];
_mesa_snprintf(s, sizeof(s),
"relative address offset too large (%d)", $1);
yyerror(& @1, state, s);
YYERROR;
} else {
$$ = $1;
}
}
;
addrReg: USED_IDENTIFIER
{
struct asm_symbol *const s = (struct asm_symbol *)
_mesa_symbol_table_find_symbol(state->st, 0, $1);
free($1);
if (s == NULL) {
yyerror(& @1, state, "invalid array member");
YYERROR;
} else if (s->type != at_address) {
yyerror(& @1, state,
"invalid variable for indexed array access");
YYERROR;
} else {
$$ = 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; }
;
optionalCcMask: '(' ccTest ')'
{
$$ = $2;
}
| '(' ccTest2 ')'
{
$$ = $2;
}
|
{
$$.CondMask = COND_TR;
$$.CondSwizzle = SWIZZLE_NOOP;
$$.CondSrc = 0;
}
;
ccTest: ccMaskRule swizzleSuffix
{
$$ = $1;
$$.CondSwizzle = $2.swizzle;
}
;
ccTest2: ccMaskRule2 swizzleSuffix
{
$$ = $1;
$$.CondSwizzle = $2.swizzle;
}
;
ccMaskRule: IDENTIFIER
{
const int cond = _mesa_parse_cc($1);
if ((cond == 0) || ($1[2] != '\0')) {
char *const err_str =
make_error_string("invalid condition code \"%s\"", $1);
yyerror(& @1, state, (err_str != NULL)
? err_str : "invalid condition code");
if (err_str != NULL) {
_mesa_free(err_str);
}
YYERROR;
}
$$.CondMask = cond;
$$.CondSwizzle = SWIZZLE_NOOP;
$$.CondSrc = 0;
}
;
ccMaskRule2: USED_IDENTIFIER
{
const int cond = _mesa_parse_cc($1);
if ((cond == 0) || ($1[2] != '\0')) {
char *const err_str =
make_error_string("invalid condition code \"%s\"", $1);
yyerror(& @1, state, (err_str != NULL)
? err_str : "invalid condition code");
if (err_str != NULL) {
_mesa_free(err_str);
}
YYERROR;
}
$$.CondMask = cond;
$$.CondSwizzle = SWIZZLE_NOOP;
$$.CondSrc = 0;
}
;
namingStatement: ATTRIB_statement
| PARAM_statement
| TEMP_statement
| ADDRESS_statement
| OUTPUT_statement
| ALIAS_statement
;
ATTRIB_statement: ATTRIB IDENTIFIER '=' attribBinding
{
struct asm_symbol *const s =
declare_variable(state, $2, at_attrib, & @2);
if (s == NULL) {
free($2);
YYERROR;
} else {
s->attrib_binding = $4;
state->InputsBound |= (1U << s->attrib_binding);
if (!validate_inputs(& @4, state)) {
YYERROR;
}
}
}
;
attribBinding: VERTEX vtxAttribItem
{
$$ = $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
{
$$ = FRAG_ATTRIB_TEX0 + $2;
}
;
PARAM_statement: PARAM_singleStmt | PARAM_multipleStmt;
PARAM_singleStmt: PARAM IDENTIFIER paramSingleInit
{
struct asm_symbol *const s =
declare_variable(state, $2, at_param, & @2);
if (s == NULL) {
free($2);
YYERROR;
} else {
s->param_binding_type = $3.param_binding_type;
s->param_binding_begin = $3.param_binding_begin;
s->param_binding_length = $3.param_binding_length;
s->param_binding_swizzle = SWIZZLE_XYZW;
s->param_is_array = 0;
}
}
;
PARAM_multipleStmt: PARAM IDENTIFIER '[' optArraySize ']' paramMultipleInit
{
if (($4 != 0) && ((unsigned) $4 != $6.param_binding_length)) {
free($2);
yyerror(& @4, state,
"parameter array size and number of bindings must match");
YYERROR;
} else {
struct asm_symbol *const s =
declare_variable(state, $2, $6.type, & @2);
if (s == NULL) {
free($2);
YYERROR;
} else {
s->param_binding_type = $6.param_binding_type;
s->param_binding_begin = $6.param_binding_begin;
s->param_binding_length = $6.param_binding_length;
s->param_binding_swizzle = SWIZZLE_XYZW;
s->param_is_array = 1;
}
}
}
;
optArraySize:
{
$$ = 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, GL_TRUE);
}
;
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, GL_TRUE);
}
;
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, GL_FALSE);
}
;
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_TOK statePointProperty
{
memset($$, 0, sizeof($$));
$$[0] = $2;
}
;
statePointProperty: SIZE_TOK
{
$$ = 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:
{
$$ = 0;
}
| '[' stateModMatNum ']'
{
$$ = $2;
}
;
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: optVarSize TEMP { $<integer>$ = $2; } varNameList
;
optVarSize: string
{
/* NV_fragment_program_option defines the size qualifiers in a
* fairly broken way. "SHORT" or "LONG" can optionally be used
* before TEMP or OUTPUT. However, neither is a reserved word!
* This means that we have to parse it as an identifier, then check
* to make sure it's one of the valid values. *sigh*
*
* In addition, the grammar in the extension spec does *not* allow
* the size specifier to be optional, but all known implementations
* do.
*/
if (!state->option.NV_fragment) {
yyerror(& @1, state, "unexpected IDENTIFIER");
YYERROR;
}
if (strcmp("SHORT", $1) == 0) {
} else if (strcmp("LONG", $1) == 0) {
} else {
char *const err_str =
make_error_string("invalid storage size specifier \"%s\"",
$1);
yyerror(& @1, state, (err_str != NULL)
? err_str : "invalid storage size specifier");
if (err_str != NULL) {
_mesa_free(err_str);
}
YYERROR;
}
}
|
{
}
;
ADDRESS_statement: ADDRESS { $<integer>$ = $1; } varNameList
;
varNameList: varNameList ',' IDENTIFIER
{
if (!declare_variable(state, $3, $<integer>0, & @3)) {
free($3);
YYERROR;
}
}
| IDENTIFIER
{
if (!declare_variable(state, $1, $<integer>0, & @1)) {
free($1);
YYERROR;
}
}
;
OUTPUT_statement: optVarSize OUTPUT IDENTIFIER '=' resultBinding
{
struct asm_symbol *const s =
declare_variable(state, $3, at_output, & @3);
if (s == NULL) {
free($3);
YYERROR;
} else {
s->output_binding = $5;
}
}
;
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 '=' USED_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);
free($4);
if (exist != NULL) {
char m[1000];
_mesa_snprintf(m, sizeof(m), "redeclared identifier: %s", $2);
free($2);
yyerror(& @2, state, m);
YYERROR;
} else if (target == NULL) {
free($2);
yyerror(& @4, state,
"undefined variable binding in ALIAS statement");
YYERROR;
} else {
_mesa_symbol_table_add_symbol(state->st, 0, $2, target);
}
}
;
string: IDENTIFIER
| USED_IDENTIFIER
;
%%
void
asm_instruction_set_operands(struct asm_instruction *inst,
const struct prog_dst_register *dst,
const struct asm_src_register *src0,
const struct asm_src_register *src1,
const struct asm_src_register *src2)
{
/* 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;
}
/* The only instruction that doesn't have any source registers is the
* condition-code based KIL instruction added by NV_fragment_program_option.
*/
if (src0 != NULL) {
inst->Base.SrcReg[0] = src0->Base;
inst->SrcReg[0] = *src0;
} else {
init_src_reg(& inst->SrcReg[0]);
}
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]);
}
}
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_STRUCT(asm_instruction);
if (inst) {
_mesa_init_instructions(& inst->Base, 1);
inst->Base.Opcode = op;
asm_instruction_set_operands(inst, dst, src0, src1, src2);
}
return inst;
}
struct asm_instruction *
asm_instruction_copy_ctor(const struct prog_instruction *base,
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_STRUCT(asm_instruction);
if (inst) {
_mesa_init_instructions(& inst->Base, 1);
inst->Base.Opcode = base->Opcode;
inst->Base.CondUpdate = base->CondUpdate;
inst->Base.CondDst = base->CondDst;
inst->Base.SaturateMode = base->SaturateMode;
inst->Base.Precision = base->Precision;
asm_instruction_set_operands(inst, dst, src0, src1, src2);
}
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;
}
/** Like init_dst_reg() but set the File and Index fields. */
void
set_dst_reg(struct prog_dst_register *r, gl_register_file file, GLint index)
{
const GLint maxIndex = 1 << INST_INDEX_BITS;
const GLint minIndex = 0;
ASSERT(index >= minIndex);
(void) minIndex;
ASSERT(index <= maxIndex);
(void) maxIndex;
ASSERT(file == PROGRAM_TEMPORARY ||
file == PROGRAM_ADDRESS ||
file == PROGRAM_OUTPUT);
memset(r, 0, sizeof(*r));
r->File = file;
r->Index = index;
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;
}
/** Like init_src_reg() but set the File and Index fields.
* \return GL_TRUE if a valid src register, GL_FALSE otherwise
*/
void
set_src_reg(struct asm_src_register *r, gl_register_file file, GLint index)
{
set_src_reg_swz(r, file, index, SWIZZLE_XYZW);
}
void
set_src_reg_swz(struct asm_src_register *r, gl_register_file file, GLint index,
GLuint swizzle)
{
const GLint maxIndex = (1 << INST_INDEX_BITS) - 1;
const GLint minIndex = -(1 << INST_INDEX_BITS);
ASSERT(file < PROGRAM_FILE_MAX);
ASSERT(index >= minIndex);
(void) minIndex;
ASSERT(index <= maxIndex);
(void) maxIndex;
memset(r, 0, sizeof(*r));
r->Base.File = file;
r->Base.Index = index;
r->Base.Swizzle = swizzle;
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, 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_swizzle = SWIZZLE_XYZW;
}
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_swizzle = SWIZZLE_XYZW;
}
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));
/*
* The param type is STATE_VAR. The program parameter entry will
* effectively be a pointer into the LOCAL or ENV parameter array.
*/
param_var->type = at_param;
param_var->param_binding_type = PROGRAM_STATE_VAR;
/* 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_swizzle = SWIZZLE_XYZW;
}
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_swizzle = SWIZZLE_XYZW;
}
param_var->param_binding_length++;
}
return idx;
}
/**
* Put a float/vector constant/literal into the parameter list.
* \param param_var returns info about the parameter/constant's location,
* binding, type, etc.
* \param vec the vector/constant to add
* \param allowSwizzle if true, try to consolidate constants which only differ
* by a swizzle. We don't want to do this when building
* arrays of constants that may be indexed indirectly.
* \return index of the constant in the parameter list.
*/
int
initialize_symbol_from_const(struct gl_program *prog,
struct asm_symbol *param_var,
const struct asm_vector *vec,
GLboolean allowSwizzle)
{
unsigned swizzle;
const int idx = _mesa_add_unnamed_constant(prog->Parameters,
vec->data, vec->count,
allowSwizzle ? &swizzle : NULL);
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_swizzle = allowSwizzle ? swizzle : SWIZZLE_XYZW;
}
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;
}
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 = ctx->Const.MaxTextureImageUnits;
state->MaxTextureCoordUnits = ctx->Const.MaxTextureCoordUnits;
state->MaxTextureUnits = ctx->Const.MaxTextureUnits;
state->MaxClipPlanes = ctx->Const.MaxClipPlanes;
state->MaxLights = ctx->Const.MaxLights;
state->MaxProgramMatrices = ctx->Const.MaxProgramMatrices;
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;
}