/*
* 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
/*
* Most of the definitions here only apply to C++
*/
#ifdef __cplusplus
#include <stdlib.h>
#include "glsl_symbol_table.h"
enum _mesa_glsl_parser_targets {
vertex_shader,
geometry_shader,
fragment_shader
};
struct gl_context;
struct glsl_switch_state {
/** Temporary variables needed for switch statement. */
ir_variable *test_var;
ir_variable *is_fallthru_var;
ir_variable *is_break_var;
class ast_switch_statement *switch_nesting_ast;
/** Table of constant values already used in case labels */
struct hash_table *labels_ht;
class ast_case_label *previous_default;
bool is_switch_innermost; // if switch stmt is closest to break, ...
};
struct _mesa_glsl_parse_state {
_mesa_glsl_parse_state(struct gl_context *_ctx, GLenum target,
void *mem_ctx);
/* Callers of this ralloc-based new need not call delete. It's
* easier to just ralloc_free 'ctx' (or any of its ancestors). */
static void* operator new(size_t size, void *ctx)
{
void *mem = rzalloc_size(ctx, size);
assert(mem != NULL);
return mem;
}
/* If the user *does* call delete, that's OK, we will just
* ralloc_free in that case. */
static void operator delete(void *mem)
{
ralloc_free(mem);
}
struct gl_context *const ctx;
void *scanner;
exec_list translation_unit;
glsl_symbol_table *symbols;
unsigned num_uniform_blocks;
unsigned uniform_block_array_size;
struct gl_uniform_block *uniform_blocks;
bool es_shader;
unsigned language_version;
const char *version_string;
enum _mesa_glsl_parser_targets target;
/**
* Default uniform layout qualifiers tracked during parsing.
* Currently affects uniform blocks and uniform buffer variables in
* those blocks.
*/
struct ast_type_qualifier *default_uniform_qualifier;
/**
* Printable list of GLSL versions supported by the current context
*
* \note
* This string should probably be generated per-context instead of per
* invokation of the compiler. This should be changed when the method of
* tracking supported GLSL versions changes.
*/
const char *supported_version_string;
/**
* 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;
/**
* During AST to IR conversion, pointer to the toplevel IR
* instruction list being generated.
*/
exec_list *toplevel_ir;
/** Have we found a return statement in this function? */
bool found_return;
/** Was there an error during compilation? */
bool error;
/**
* Are all shader inputs / outputs invariant?
*
* This is set when the 'STDGL invariant(all)' pragma is used.
*/
bool all_invariant;
/** Loop or switch statement containing the current instructions. */
class ast_iteration_statement *loop_nesting_ast;
struct glsl_switch_state switch_state;
/** 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
*/
/*@{*/
bool ARB_draw_buffers_enable;
bool ARB_draw_buffers_warn;
bool ARB_draw_instanced_enable;
bool ARB_draw_instanced_warn;
bool ARB_explicit_attrib_location_enable;
bool ARB_explicit_attrib_location_warn;
bool ARB_fragment_coord_conventions_enable;
bool ARB_fragment_coord_conventions_warn;
bool ARB_texture_rectangle_enable;
bool ARB_texture_rectangle_warn;
bool EXT_texture_array_enable;
bool EXT_texture_array_warn;
bool ARB_shader_texture_lod_enable;
bool ARB_shader_texture_lod_warn;
bool ARB_shader_stencil_export_enable;
bool ARB_shader_stencil_export_warn;
bool AMD_conservative_depth_enable;
bool AMD_conservative_depth_warn;
bool ARB_conservative_depth_enable;
bool ARB_conservative_depth_warn;
bool AMD_shader_stencil_export_enable;
bool AMD_shader_stencil_export_warn;
bool OES_texture_3D_enable;
bool OES_texture_3D_warn;
bool OES_EGL_image_external_enable;
bool OES_EGL_image_external_warn;
bool ARB_shader_bit_encoding_enable;
bool ARB_shader_bit_encoding_warn;
bool ARB_uniform_buffer_object_enable;
bool ARB_uniform_buffer_object_warn;
bool OES_standard_derivatives_enable;
bool OES_standard_derivatives_warn;
/*@}*/
/** 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 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);
#endif /* __cplusplus */
/*
* These definitions apply to C and C++
*/
#ifdef __cplusplus
extern "C" {
#endif
extern int glcpp_preprocess(void *ctx, const char **shader, char **info_log,
const struct gl_extensions *extensions, int api);
extern void _mesa_destroy_shader_compiler(void);
extern void _mesa_destroy_shader_compiler_caches(void);
#ifdef __cplusplus
}
#endif
#endif /* GLSL_PARSER_EXTRAS_H */