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/*
* Copyright © 2010 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
#ifndef GLSL_PARSER_EXTRAS_H
#define GLSL_PARSER_EXTRAS_H
#include <cstdlib>
#include "glsl_symbol_table.h"
enum _mesa_glsl_parser_targets {
vertex_shader,
geometry_shader,
fragment_shader,
ir_shader
};
struct __GLcontextRec;
struct _mesa_glsl_parse_state {
_mesa_glsl_parse_state(struct __GLcontextRec *ctx, GLenum target,
void *mem_ctx);
/* Callers of this talloc-based new need not call delete. It's
* easier to just talloc_free 'ctx' (or any of its ancestors). */
static void* operator new(size_t size, void *ctx)
{
void *mem = talloc_zero_size(ctx, size);
assert(mem != NULL);
return mem;
}
/* If the user *does* call delete, that's OK, we will just
* talloc_free in that case. */
static void operator delete(void *mem)
{
talloc_free(mem);
}
void *scanner;
exec_list translation_unit;
glsl_symbol_table *symbols;
unsigned language_version;
enum _mesa_glsl_parser_targets target;
/**
* Implementation defined limits that affect built-in variables, etc.
*
* \sa struct gl_constants (in mtypes.h)
*/
struct {
/* 1.10 */
unsigned MaxLights;
unsigned MaxClipPlanes;
unsigned MaxTextureUnits;
unsigned MaxTextureCoords;
unsigned MaxVertexAttribs;
unsigned MaxVertexUniformComponents;
unsigned MaxVaryingFloats;
unsigned MaxVertexTextureImageUnits;
unsigned MaxCombinedTextureImageUnits;
unsigned MaxTextureImageUnits;
unsigned MaxFragmentUniformComponents;
/* ARB_draw_buffers */
unsigned MaxDrawBuffers;
} Const;
/**
* During AST to IR conversion, pointer to current IR function
*
* Will be \c NULL whenever the AST to IR conversion is not inside a
* function definition.
*/
class ir_function_signature *current_function;
/** Have we found a return statement in this function? */
bool found_return;
/** Was there an error during compilation? */
bool error;
/** Loop or switch statement containing the current instructions. */
class ir_instruction *loop_or_switch_nesting;
class ast_iteration_statement *loop_or_switch_nesting_ast;
/** List of structures defined in user code. */
const glsl_type **user_structures;
unsigned num_user_structures;
char *info_log;
/**
* \name Enable bits for GLSL extensions
*/
/*@{*/
unsigned ARB_draw_buffers_enable:1;
unsigned ARB_draw_buffers_warn:1;
unsigned ARB_texture_rectangle_enable:1;
unsigned ARB_texture_rectangle_warn:1;
unsigned EXT_texture_array_enable:1;
unsigned EXT_texture_array_warn:1;
/*@}*/
/** Extensions supported by the OpenGL implementation. */
const struct gl_extensions *extensions;
/** Shaders containing built-in functions that are used for linking. */
struct gl_shader *builtins_to_link[16];
unsigned num_builtins_to_link;
};
typedef struct YYLTYPE {
int first_line;
int first_column;
int last_line;
int last_column;
unsigned source;
} YYLTYPE;
# define YYLTYPE_IS_DECLARED 1
# define YYLTYPE_IS_TRIVIAL 1
# define YYLLOC_DEFAULT(Current, Rhs, N) \
do { \
if (N) \
{ \
(Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
(Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
(Current).last_line = YYRHSLOC(Rhs, N).last_line; \
(Current).last_column = YYRHSLOC(Rhs, N).last_column; \
} \
else \
{ \
(Current).first_line = (Current).last_line = \
YYRHSLOC(Rhs, 0).last_line; \
(Current).first_column = (Current).last_column = \
YYRHSLOC(Rhs, 0).last_column; \
} \
(Current).source = 0; \
} while (0)
extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
const char *fmt, ...);
/**
* Emit a warning to the shader log
*
* \sa _mesa_glsl_error
*/
extern void _mesa_glsl_warning(const YYLTYPE *locp,
_mesa_glsl_parse_state *state,
const char *fmt, ...);
extern "C" {
extern int preprocess(void *ctx, const char **shader, char **info_log,
const struct gl_extensions *extensions);
}
extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
const char *string);
extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state);
union YYSTYPE;
extern int _mesa_glsl_lex(union YYSTYPE *yylval, YYLTYPE *yylloc,
void *scanner);
extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *);
/**
* Process elements of the #extension directive
*
* \return
* If \c name and \c behavior are valid, \c true is returned. Otherwise
* \c false is returned.
*/
extern bool _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
const char *behavior,
YYLTYPE *behavior_locp,
_mesa_glsl_parse_state *state);
/**
* Get the textual name of the specified shader target
*/
extern const char *
_mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target);
void do_ir_to_mesa(exec_list *instructions);
#endif /* GLSL_PARSER_EXTRAS_H */
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