/*
* 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.
*/
#pragma once
#include "main/config.h"
#include "program/prog_parameter.h"
struct gl_context;
enum asm_type {
at_none,
at_address,
at_attrib,
at_param,
at_temp,
at_output
};
struct asm_symbol {
struct asm_symbol *next; /**< List linkage for freeing. */
const char *name;
enum asm_type type;
unsigned attrib_binding;
unsigned output_binding; /**< Output / result register number. */
/**
* One of PROGRAM_STATE_VAR, PROGRAM_LOCAL_PARAM, or PROGRAM_ENV_PARAM.
*/
unsigned param_binding_type;
/**
* Offset into the program_parameter_list where the tokens representing our
* bound state (or constants) start.
*/
unsigned param_binding_begin;
/**
* Constants put into the parameter list may be swizzled. This
* field contain's the symbol's swizzle. (SWIZZLE_X/Y/Z/W)
*/
unsigned param_binding_swizzle;
/* This is how many entries in the program_parameter_list we take up
* with our state tokens or constants. Note that this is _not_ the same as
* the number of param registers we eventually use.
*/
unsigned param_binding_length;
/**
* Index of the temp register assigned to this variable.
*/
unsigned temp_binding;
/**
* Flag whether or not a PARAM is an array
*/
unsigned param_is_array:1;
/**
* Flag whether or not a PARAM array is accessed indirectly
*/
unsigned param_accessed_indirectly:1;
/**
* \brief Is first pass of parameter layout done with this variable?
*
* The parameter layout routine operates in two passes. This flag tracks
* whether or not the first pass has handled this variable.
*
* \sa _mesa_layout_parameters
*/
unsigned pass1_done:1;
};
struct asm_vector {
unsigned count;
gl_constant_value data[4];
};
struct asm_swizzle_mask {
unsigned swizzle:12;
unsigned mask:4;
};
struct asm_src_register {
struct prog_src_register Base;
/**
* Symbol associated with indirect access to parameter arrays.
*
* If \c Base::RelAddr is 1, this will point to the symbol for the parameter
* that is being dereferenced. Further, \c Base::Index will be the offset
* from the address register being used.
*/
struct asm_symbol *Symbol;
};
struct asm_instruction {
struct prog_instruction Base;
struct asm_instruction *next;
struct asm_src_register SrcReg[3];
};
struct asm_parser_state {
struct gl_context *ctx;
struct gl_program *prog;
/**
* Per-program target limits
*/
struct gl_program_constants *limits;
struct _mesa_symbol_table *st;
/**
* Linked list of symbols
*
* This list is \b only used when cleaning up compiler state and freeing
* memory.
*/
struct asm_symbol *sym;
/**
* State for the lexer.
*/
void *scanner;
/**
* Linked list of instructions generated during parsing.
*/
/*@{*/
struct asm_instruction *inst_head;
struct asm_instruction *inst_tail;
/*@}*/
/**
* Selected limits copied from gl_constants
*
* These are limits from the GL context, but various bits in the program
* must be validated against these values.
*/
/*@{*/
unsigned MaxTextureCoordUnits;
unsigned MaxTextureImageUnits;
unsigned MaxTextureUnits;
unsigned MaxClipPlanes;
unsigned MaxLights;
unsigned MaxProgramMatrices;
unsigned MaxDrawBuffers;
/*@}*/
/**
* Value to use in state vector accessors for environment and local
* parameters
*/
unsigned state_param_enum;
/**
* Input attributes bound to specific names
*
* This is only needed so that errors can be properly produced when
* multiple ATTRIB statements bind illegal combinations of vertex
* attributes.
*/
GLbitfield64 InputsBound;
enum {
invalid_mode = 0,
ARB_vertex,
ARB_fragment
} mode;
struct {
unsigned PositionInvariant:1;
unsigned Fog:2;
unsigned PrecisionHint:2;
unsigned DrawBuffers:1;
unsigned Shadow:1;
unsigned TexRect:1;
unsigned TexArray:1;
unsigned NV_fragment:1;
unsigned OriginUpperLeft:1;
unsigned PixelCenterInteger:1;
} option;
struct {
unsigned UsesKill:1;
unsigned UsesDFdy:1;
} fragment;
};
#define OPTION_NONE 0
#define OPTION_FOG_EXP 1
#define OPTION_FOG_EXP2 2
#define OPTION_FOG_LINEAR 3
#define OPTION_NICEST 1
#define OPTION_FASTEST 2
typedef struct YYLTYPE {
int first_line;
int first_column;
int last_line;
int last_column;
int position;
} YYLTYPE;
#define YYLTYPE_IS_DECLARED 1
#define YYLTYPE_IS_TRIVIAL 1
extern GLboolean _mesa_parse_arb_program(struct gl_context *ctx, GLenum target,
const GLubyte *str, GLsizei len, struct asm_parser_state *state);
/* From program_lexer.l. */
extern void _mesa_program_lexer_dtor(void *scanner);
extern void _mesa_program_lexer_ctor(void **scanner,
struct asm_parser_state *state, const char *string, size_t len);
/**
*\name From program_parse_extra.c
*/
/*@{*/
/**
* Parses and processes an option string to an ARB vertex program
*
* \return
* Non-zero on success, zero on failure.
*/
extern int _mesa_ARBvp_parse_option(struct asm_parser_state *state,
const char *option);
/**
* Parses and processes an option string to an ARB fragment program
*
* \return
* Non-zero on success, zero on failure.
*/
extern int _mesa_ARBfp_parse_option(struct asm_parser_state *state,
const char *option);
/**
* Parses and processes instruction suffixes
*
* Instruction suffixes, such as \c _SAT, are processed. The relevant bits
* are set in \c inst. If suffixes are encountered that are either not known
* or not supported by the modes and options set in \c state, zero will be
* returned.
*
* \return
* Non-zero on success, zero on failure.
*/
extern int _mesa_parse_instruction_suffix(const struct asm_parser_state *state,
const char *suffix, struct prog_instruction *inst);
/**
* Parses a condition code name
*
* The condition code names (e.g., \c LT, \c GT, \c NE) were added to assembly
* shaders with the \c GL_NV_fragment_program_option extension. This function
* converts a string representation into one of the \c COND_ macros.
*
* \return
* One of the \c COND_ macros defined in prog_instruction.h on success or zero
* on failure.
*/
extern int _mesa_parse_cc(const char *s);
/*@}*/