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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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21 * DEALINGS IN THE SOFTWARE.
25 #include "main/config.h"
39 struct asm_symbol
*next
; /**< List linkage for freeing. */
42 unsigned attrib_binding
;
43 unsigned output_binding
; /**< Output / result register number. */
46 * One of PROGRAM_STATE_VAR, PROGRAM_LOCAL_PARAM, or PROGRAM_ENV_PARAM.
48 unsigned param_binding_type
;
51 * Offset into the program_parameter_list where the tokens representing our
52 * bound state (or constants) start.
54 unsigned param_binding_begin
;
57 * Constants put into the parameter list may be swizzled. This
58 * field contain's the symbol's swizzle. (SWIZZLE_X/Y/Z/W)
60 unsigned param_binding_swizzle
;
62 /* This is how many entries in the program_parameter_list we take up
63 * with our state tokens or constants. Note that this is _not_ the same as
64 * the number of param registers we eventually use.
66 unsigned param_binding_length
;
69 * Index of the temp register assigned to this variable.
71 unsigned temp_binding
;
74 * Flag whether or not a PARAM is an array
76 unsigned param_is_array
:1;
80 * Flag whether or not a PARAM array is accessed indirectly
82 unsigned param_accessed_indirectly
:1;
86 * \brief Is first pass of parameter layout done with this variable?
88 * The parameter layout routine operates in two passes. This flag tracks
89 * whether or not the first pass has handled this variable.
91 * \sa _mesa_layout_parameters
93 unsigned pass1_done
:1;
103 struct asm_swizzle_mask
{
109 struct asm_src_register
{
110 struct prog_src_register Base
;
113 * Symbol associated with indirect access to parameter arrays.
115 * If \c Base::RelAddr is 1, this will point to the symbol for the parameter
116 * that is being dereferenced. Further, \c Base::Index will be the offset
117 * from the address register being used.
119 struct asm_symbol
*Symbol
;
123 struct asm_instruction
{
124 struct prog_instruction Base
;
125 struct asm_instruction
*next
;
126 struct asm_src_register SrcReg
[3];
130 struct asm_parser_state
{
131 struct gl_context
*ctx
;
132 struct gl_program
*prog
;
135 * Per-program target limits
137 struct gl_program_constants
*limits
;
139 struct _mesa_symbol_table
*st
;
142 * Linked list of symbols
144 * This list is \b only used when cleaning up compiler state and freeing
147 struct asm_symbol
*sym
;
150 * State for the lexer.
155 * Linked list of instructions generated during parsing.
158 struct asm_instruction
*inst_head
;
159 struct asm_instruction
*inst_tail
;
164 * Selected limits copied from gl_constants
166 * These are limits from the GL context, but various bits in the program
167 * must be validated against these values.
170 unsigned MaxTextureCoordUnits
;
171 unsigned MaxTextureImageUnits
;
172 unsigned MaxTextureUnits
;
173 unsigned MaxClipPlanes
;
175 unsigned MaxProgramMatrices
;
179 * Value to use in state vector accessors for environment and local
182 unsigned state_param_enum
;
186 * Input attributes bound to specific names
188 * This is only needed so that errors can be properly produced when
189 * multiple ATTRIB statements bind illegal combinations of vertex
192 unsigned InputsBound
;
201 unsigned PositionInvariant
:1;
203 unsigned PrecisionHint
:2;
204 unsigned DrawBuffers
:1;
208 unsigned NV_fragment
:1;
209 unsigned OriginUpperLeft
:1;
210 unsigned PixelCenterInteger
:1;
218 #define OPTION_NONE 0
219 #define OPTION_FOG_EXP 1
220 #define OPTION_FOG_EXP2 2
221 #define OPTION_FOG_LINEAR 3
222 #define OPTION_NICEST 1
223 #define OPTION_FASTEST 2
225 typedef struct YYLTYPE
{
233 #define YYLTYPE_IS_DECLARED 1
234 #define YYLTYPE_IS_TRIVIAL 1
237 extern GLboolean
_mesa_parse_arb_program(struct gl_context
*ctx
, GLenum target
,
238 const GLubyte
*str
, GLsizei len
, struct asm_parser_state
*state
);
242 /* From program_lexer.l. */
243 extern void _mesa_program_lexer_dtor(void *scanner
);
245 extern void _mesa_program_lexer_ctor(void **scanner
,
246 struct asm_parser_state
*state
, const char *string
, size_t len
);
250 *\name From program_parse_extra.c
255 * Parses and processes an option string to an ARB vertex program
258 * Non-zero on success, zero on failure.
260 extern int _mesa_ARBvp_parse_option(struct asm_parser_state
*state
,
264 * Parses and processes an option string to an ARB fragment program
267 * Non-zero on success, zero on failure.
269 extern int _mesa_ARBfp_parse_option(struct asm_parser_state
*state
,
273 * Parses and processes instruction suffixes
275 * Instruction suffixes, such as \c _SAT, are processed. The relevant bits
276 * are set in \c inst. If suffixes are encountered that are either not known
277 * or not supported by the modes and options set in \c state, zero will be
281 * Non-zero on success, zero on failure.
283 extern int _mesa_parse_instruction_suffix(const struct asm_parser_state
*state
,
284 const char *suffix
, struct prog_instruction
*inst
);
287 * Parses a condition code name
289 * The condition code names (e.g., \c LT, \c GT, \c NE) were added to assembly
290 * shaders with the \c GL_NV_fragment_program_option extension. This function
291 * converts a string representation into one of the \c COND_ macros.
294 * One of the \c COND_ macros defined in prog_instruction.h on success or zero
297 extern int _mesa_parse_cc(const char *s
);