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Diffstat (limited to 'src/mesa/shader/program_parser.h')
| -rw-r--r-- | src/mesa/shader/program_parser.h | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/mesa/shader/program_parser.h b/src/mesa/shader/program_parser.h new file mode 100644 index 00000000000..20190470ea9 --- /dev/null +++ b/src/mesa/shader/program_parser.h @@ -0,0 +1,256 @@ +/* + * 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" + +enum asm_type { + at_none, + at_address, + at_attrib, + at_param, + at_temp, + at_output, +}; + +struct asm_symbol { + 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; + + /* This is how many entries in the 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; + float 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_program *prog; + + /** + * Per-program target limits + */ + struct gl_program_constants *limits; + + struct _mesa_symbol_table *st; + + /** + * 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; + /*@}*/ + + /** + * 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. + */ + unsigned 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; + } option; + + struct { + unsigned TexturesUsed[MAX_TEXTURE_IMAGE_UNITS]; + unsigned ShadowSamplers; + unsigned UsesKill: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 + + +#ifndef MTYPES_H +struct __GLcontextRec; +typedef struct __GLcontextRec GLcontext; +#endif + +extern GLboolean _mesa_parse_arb_program(GLcontext *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); + +/*@}*/ |