2 * Copyright © 2009 Intel Corporation
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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24 #ifndef PROGRAM_PARSER_H
25 #define PROGRAM_PARSER_H
27 #include "main/config.h"
28 #include "program/prog_parameter.h"
42 struct asm_symbol
*next
; /**< List linkage for freeing. */
45 unsigned attrib_binding
;
46 unsigned output_binding
; /**< Output / result register number. */
49 * One of PROGRAM_STATE_VAR or PROGRAM_CONSTANT.
51 unsigned param_binding_type
;
54 * Offset into the program_parameter_list where the tokens representing our
55 * bound state (or constants) start.
57 unsigned param_binding_begin
;
60 * Constants put into the parameter list may be swizzled. This
61 * field contain's the symbol's swizzle. (SWIZZLE_X/Y/Z/W)
63 unsigned param_binding_swizzle
;
65 /* This is how many entries in the program_parameter_list we take up
66 * with our state tokens or constants. Note that this is _not_ the same as
67 * the number of param registers we eventually use.
69 unsigned param_binding_length
;
72 * Index of the temp register assigned to this variable.
74 unsigned temp_binding
;
77 * Flag whether or not a PARAM is an array
79 unsigned param_is_array
:1;
83 * Flag whether or not a PARAM array is accessed indirectly
85 unsigned param_accessed_indirectly
:1;
89 * \brief Is first pass of parameter layout done with this variable?
91 * The parameter layout routine operates in two passes. This flag tracks
92 * whether or not the first pass has handled this variable.
94 * \sa _mesa_layout_parameters
96 unsigned pass1_done
:1;
102 gl_constant_value data
[4];
106 struct asm_swizzle_mask
{
112 struct asm_src_register
{
113 struct prog_src_register Base
;
116 * Symbol associated with indirect access to parameter arrays.
118 * If \c Base::RelAddr is 1, this will point to the symbol for the parameter
119 * that is being dereferenced. Further, \c Base::Index will be the offset
120 * from the address register being used.
122 struct asm_symbol
*Symbol
;
126 struct asm_instruction
{
127 struct prog_instruction Base
;
128 struct asm_instruction
*next
;
129 struct asm_src_register SrcReg
[3];
133 struct asm_parser_state
{
134 struct gl_context
*ctx
;
135 struct gl_program
*prog
;
137 /** Memory context to attach instructions to. */
141 * Per-program target limits
143 struct gl_program_constants
*limits
;
145 struct _mesa_symbol_table
*st
;
148 * Linked list of symbols
150 * This list is \b only used when cleaning up compiler state and freeing
153 struct asm_symbol
*sym
;
156 * State for the lexer.
161 * Linked list of instructions generated during parsing.
164 struct asm_instruction
*inst_head
;
165 struct asm_instruction
*inst_tail
;
170 * Selected limits copied from gl_constants
172 * These are limits from the GL context, but various bits in the program
173 * must be validated against these values.
176 unsigned MaxTextureCoordUnits
;
177 unsigned MaxTextureImageUnits
;
178 unsigned MaxTextureUnits
;
179 unsigned MaxClipPlanes
;
181 unsigned MaxProgramMatrices
;
182 unsigned MaxDrawBuffers
;
186 * Value to use in state vector accessors for environment and local
189 unsigned state_param_enum
;
193 * Input attributes bound to specific names
195 * This is only needed so that errors can be properly produced when
196 * multiple ATTRIB statements bind illegal combinations of vertex
199 GLbitfield64 InputsBound
;
208 unsigned PositionInvariant
:1;
210 unsigned PrecisionHint
:2;
211 unsigned DrawBuffers
:1;
215 unsigned OriginUpperLeft
:1;
216 unsigned PixelCenterInteger
:1;
224 #define OPTION_NONE 0
225 #define OPTION_FOG_EXP 1
226 #define OPTION_FOG_EXP2 2
227 #define OPTION_FOG_LINEAR 3
228 #define OPTION_NICEST 1
229 #define OPTION_FASTEST 2
231 typedef struct YYLTYPE
{
239 #define YYLTYPE_IS_DECLARED 1
240 #define YYLTYPE_IS_TRIVIAL 1
243 extern GLboolean
_mesa_parse_arb_program(struct gl_context
*ctx
, GLenum target
,
244 const GLubyte
*str
, GLsizei len
, struct asm_parser_state
*state
);
248 /* From program_lexer.l. */
249 extern void _mesa_program_lexer_dtor(void *scanner
);
251 extern void _mesa_program_lexer_ctor(void **scanner
,
252 struct asm_parser_state
*state
, const char *string
, size_t len
);
256 *\name From program_parse_extra.c
261 * Parses and processes an option string to an ARB vertex program
264 * Non-zero on success, zero on failure.
266 extern int _mesa_ARBvp_parse_option(struct asm_parser_state
*state
,
270 * Parses and processes an option string to an ARB fragment program
273 * Non-zero on success, zero on failure.
275 extern int _mesa_ARBfp_parse_option(struct asm_parser_state
*state
,
279 * Parses and processes instruction suffixes
281 * Instruction suffixes, such as \c _SAT, are processed. The relevant bits
282 * are set in \c inst. If suffixes are encountered that are either not known
283 * or not supported by the modes and options set in \c state, zero will be
287 * Non-zero on success, zero on failure.
289 extern int _mesa_parse_instruction_suffix(const struct asm_parser_state
*state
,
290 const char *suffix
, struct prog_instruction
*inst
);
294 #endif /* PROGRAM_PARSER_H */