--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.1
+ *
+ * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+#define DEBUG_PARSING 0
+
+/**
+ * \file arbprogparse.c
+ * ARB_*_program parser core
+ * \author Karl Rasche
+ */
+
+#include "mtypes.h"
+#include "glheader.h"
+#include "context.h"
+#include "hash.h"
+#include "imports.h"
+#include "macros.h"
+#include "program.h"
+#include "nvvertprog.h"
+#include "nvfragprog.h"
+#include "arbprogparse.h"
+#include "grammar_mesa.h"
+
+/* TODO:
+ * Fragment Program Stuff:
+ * -----------------------------------------------------
+ *
+ * - things from Michal's email
+ * + overflow on atoi
+ * + not-overflowing floats (don't use parse_integer..)
+ * + can remove range checking in arbparse.c
+ *
+ * - check all limits of number of various variables
+ * + parameters
+ *
+ * - test! test! test!
+ *
+ * Vertex Program Stuff:
+ * -----------------------------------------------------
+ * - Optimize param array usage and count limits correctly, see spec,
+ * section 2.14.3.7
+ * + Record if an array is reference absolutly or relatively (or both)
+ * + For absolute arrays, store a bitmap of accesses
+ * + For single parameters, store an access flag
+ * + After parsing, make a parameter cleanup and merging pass, where
+ * relative arrays are layed out first, followed by abs arrays, and
+ * finally single state.
+ * + Remap offsets for param src and dst registers
+ * + Now we can properly count parameter usage
+ *
+ * - Multiple state binding errors in param arrays (see spec, just before
+ * section 2.14.3.3)
+ * - grep for XXX
+ *
+ * Mesa Stuff
+ * -----------------------------------------------------
+ * - User clipping planes vs. PositionInvariant
+ * - Is it sufficient to just multiply by the mvp to transform in the
+ * PositionInvariant case? Or do we need something more involved?
+ *
+ * - vp_src swizzle is GLubyte, fp_src swizzle is GLuint
+ * - fetch state listed in program_parameters list
+ * + WTF should this go???
+ * + currently in nvvertexec.c and s_nvfragprog.c
+ *
+ * - allow for multiple address registers (and fetch address regs properly)
+ *
+ * Cosmetic Stuff
+ * -----------------------------------------------------
+ * - remove any leftover unused grammer.c stuff (dict_ ?)
+ * - fix grammer.c error handling so its not static
+ * - #ifdef around stuff pertaining to extentions
+ *
+ * Outstanding Questions:
+ * -----------------------------------------------------
+ * - ARB_matrix_palette / ARB_vertex_blend -- not supported
+ * what gets hacked off because of this:
+ * + VERTEX_ATTRIB_MATRIXINDEX
+ * + VERTEX_ATTRIB_WEIGHT
+ * + MATRIX_MODELVIEW
+ * + MATRIX_PALETTE
+ *
+ * - When can we fetch env/local params from their own register files, and
+ * when to we have to fetch them into the main state register file?
+ * (think arrays)
+ *
+ * Grammar Changes:
+ * -----------------------------------------------------
+ */
+
+/* Changes since moving the file to shader directory
+
+2004-III-4 ------------------------------------------------------------
+- added #include "grammar_mesa.h"
+- removed grammar specific code part (it resides now in grammar.c)
+- added GL_ARB_fragment_program_shadow tokens
+- modified #include "arbparse_syn.h"
+- major changes inside _mesa_parse_arb_program()
+- check the program string for '\0' characters
+- copy the program string to a one-byte-longer location to have
+ it null-terminated
+- position invariance test (not writing to result.position) moved
+ to syntax part
+*/
+
+typedef GLubyte *production;
+
+/**
+ * This is the text describing the rules to parse the grammar
+ */
+static char arb_grammar_text[] =
+#include "arbprogram_syn.h"
+;
+
+/**
+ * These should match up with the values defined in arbprogram.syn
+ */
+
+/*
+ Changes:
+ - changed and merged V_* and F_* opcode values to OP_*.
+ - added GL_ARB_fragment_program_shadow specific tokens (michal)
+*/
+#define REVISION 0x07
+
+/* program type */
+#define FRAGMENT_PROGRAM 0x01
+#define VERTEX_PROGRAM 0x02
+
+/* program section */
+#define OPTION 0x01
+#define INSTRUCTION 0x02
+#define DECLARATION 0x03
+#define END 0x04
+
+/* GL_ARB_fragment_program option flags */
+#define ARB_PRECISION_HINT_FASTEST 0x01
+#define ARB_PRECISION_HINT_NICEST 0x02
+#define ARB_FOG_EXP 0x04
+#define ARB_FOG_EXP2 0x08
+#define ARB_FOG_LINEAR 0x10
+
+/* GL_ARB_vertex_program option flags */
+#define ARB_POSITION_INVARIANT 0x20
+
+/* GL_ARB_fragment_program_shadow option flags */
+#define ARB_FRAGMENT_PROGRAM_SHADOW 0x40
+
+/* GL_ARB_fragment_program instruction class */
+#define OP_ALU_INST 0x00
+#define OP_TEX_INST 0x01
+
+/* GL_ARB_vertex_program instruction class */
+/* OP_ALU_INST */
+
+/* GL_ARB_fragment_program instruction type */
+#define OP_ALU_VECTOR 0x00
+#define OP_ALU_SCALAR 0x01
+#define OP_ALU_BINSC 0x02
+#define OP_ALU_BIN 0x03
+#define OP_ALU_TRI 0x04
+#define OP_ALU_SWZ 0x05
+#define OP_TEX_SAMPLE 0x06
+#define OP_TEX_KIL 0x07
+
+/* GL_ARB_vertex_program instruction type */
+#define OP_ALU_ARL 0x08
+/* OP_ALU_VECTOR */
+/* OP_ALU_SCALAR */
+/* OP_ALU_BINSC */
+/* OP_ALU_BIN */
+/* OP_ALU_TRI */
+/* OP_ALU_SWZ */
+
+/* GL_ARB_fragment_program instruction code */
+#define OP_ABS 0x00
+#define OP_ABS_SAT 0x1B
+#define OP_FLR 0x09
+#define OP_FLR_SAT 0x26
+#define OP_FRC 0x0A
+#define OP_FRC_SAT 0x27
+#define OP_LIT 0x0C
+#define OP_LIT_SAT 0x2A
+#define OP_MOV 0x11
+#define OP_MOV_SAT 0x30
+#define OP_COS 0x1F
+#define OP_COS_SAT 0x20
+#define OP_EX2 0x07
+#define OP_EX2_SAT 0x25
+#define OP_LG2 0x0B
+#define OP_LG2_SAT 0x29
+#define OP_RCP 0x14
+#define OP_RCP_SAT 0x33
+#define OP_RSQ 0x15
+#define OP_RSQ_SAT 0x34
+#define OP_SIN 0x38
+#define OP_SIN_SAT 0x39
+#define OP_SCS 0x35
+#define OP_SCS_SAT 0x36
+#define OP_POW 0x13
+#define OP_POW_SAT 0x32
+#define OP_ADD 0x01
+#define OP_ADD_SAT 0x1C
+#define OP_DP3 0x03
+#define OP_DP3_SAT 0x21
+#define OP_DP4 0x04
+#define OP_DP4_SAT 0x22
+#define OP_DPH 0x05
+#define OP_DPH_SAT 0x23
+#define OP_DST 0x06
+#define OP_DST_SAT 0x24
+#define OP_MAX 0x0F
+#define OP_MAX_SAT 0x2E
+#define OP_MIN 0x10
+#define OP_MIN_SAT 0x2F
+#define OP_MUL 0x12
+#define OP_MUL_SAT 0x31
+#define OP_SGE 0x16
+#define OP_SGE_SAT 0x37
+#define OP_SLT 0x17
+#define OP_SLT_SAT 0x3A
+#define OP_SUB 0x18
+#define OP_SUB_SAT 0x3B
+#define OP_XPD 0x1A
+#define OP_XPD_SAT 0x43
+#define OP_CMP 0x1D
+#define OP_CMP_SAT 0x1E
+#define OP_LRP 0x2B
+#define OP_LRP_SAT 0x2C
+#define OP_MAD 0x0E
+#define OP_MAD_SAT 0x2D
+#define OP_SWZ 0x19
+#define OP_SWZ_SAT 0x3C
+#define OP_TEX 0x3D
+#define OP_TEX_SAT 0x3E
+#define OP_TXB 0x3F
+#define OP_TXB_SAT 0x40
+#define OP_TXP 0x41
+#define OP_TXP_SAT 0x42
+#define OP_KIL 0x28
+
+/* GL_ARB_vertex_program instruction code */
+#define OP_ARL 0x02
+/* OP_ABS */
+/* OP_FLR */
+/* OP_FRC */
+/* OP_LIT */
+/* OP_MOV */
+/* OP_EX2 */
+#define OP_EXP 0x08
+/* OP_LG2 */
+#define OP_LOG 0x0D
+/* OP_RCP */
+/* OP_RSQ */
+/* OP_POW */
+/* OP_ADD */
+/* OP_DP3 */
+/* OP_DP4 */
+/* OP_DPH */
+/* OP_DST */
+/* OP_MAX */
+/* OP_MIN */
+/* OP_MUL */
+/* OP_SGE */
+/* OP_SLT */
+/* OP_SUB */
+/* OP_XPD */
+/* OP_MAD */
+/* OP_SWZ */
+
+/* fragment attribute binding */
+#define FRAGMENT_ATTRIB_COLOR 0x01
+#define FRAGMENT_ATTRIB_TEXCOORD 0x02
+#define FRAGMENT_ATTRIB_FOGCOORD 0x03
+#define FRAGMENT_ATTRIB_POSITION 0x04
+
+/* vertex attribute binding */
+#define VERTEX_ATTRIB_POSITION 0x01
+#define VERTEX_ATTRIB_WEIGHT 0x02
+#define VERTEX_ATTRIB_NORMAL 0x03
+#define VERTEX_ATTRIB_COLOR 0x04
+#define VERTEX_ATTRIB_FOGCOORD 0x05
+#define VERTEX_ATTRIB_TEXCOORD 0x06
+#define VERTEX_ATTRIB_MATRIXINDEX 0x07
+#define VERTEX_ATTRIB_GENERIC 0x08
+
+/* fragment result binding */
+#define FRAGMENT_RESULT_COLOR 0x01
+#define FRAGMENT_RESULT_DEPTH 0x02
+
+/* vertex result binding */
+#define VERTEX_RESULT_POSITION 0x01
+#define VERTEX_RESULT_COLOR 0x02
+#define VERTEX_RESULT_FOGCOORD 0x03
+#define VERTEX_RESULT_POINTSIZE 0x04
+#define VERTEX_RESULT_TEXCOORD 0x05
+
+/* texture target */
+#define TEXTARGET_1D 0x01
+#define TEXTARGET_2D 0x02
+#define TEXTARGET_3D 0x03
+#define TEXTARGET_RECT 0x04
+#define TEXTARGET_CUBE 0x05
+/* GL_ARB_fragment_program_shadow */
+#define TEXTARGET_SHADOW1D 0x06
+#define TEXTARGET_SHADOW2D 0x07
+#define TEXTARGET_SHADOWRECT 0x08
+
+/* face type */
+#define FACE_FRONT 0x00
+#define FACE_BACK 0x01
+
+/* color type */
+#define COLOR_PRIMARY 0x00
+#define COLOR_SECONDARY 0x01
+
+/* component */
+#define COMPONENT_X 0x00
+#define COMPONENT_Y 0x01
+#define COMPONENT_Z 0x02
+#define COMPONENT_W 0x03
+#define COMPONENT_0 0x04
+#define COMPONENT_1 0x05
+
+/* array index type */
+#define ARRAY_INDEX_ABSOLUTE 0x00
+#define ARRAY_INDEX_RELATIVE 0x01
+
+/* matrix name */
+#define MATRIX_MODELVIEW 0x01
+#define MATRIX_PROJECTION 0x02
+#define MATRIX_MVP 0x03
+#define MATRIX_TEXTURE 0x04
+#define MATRIX_PALETTE 0x05
+#define MATRIX_PROGRAM 0x06
+
+/* matrix modifier */
+#define MATRIX_MODIFIER_IDENTITY 0x00
+#define MATRIX_MODIFIER_INVERSE 0x01
+#define MATRIX_MODIFIER_TRANSPOSE 0x02
+#define MATRIX_MODIFIER_INVTRANS 0x03
+
+/* constant type */
+#define CONSTANT_SCALAR 0x01
+#define CONSTANT_VECTOR 0x02
+
+/* program param type */
+#define PROGRAM_PARAM_ENV 0x01
+#define PROGRAM_PARAM_LOCAL 0x02
+
+/* register type */
+#define REGISTER_ATTRIB 0x01
+#define REGISTER_PARAM 0x02
+#define REGISTER_RESULT 0x03
+#define REGISTER_ESTABLISHED_NAME 0x04
+
+/* param binding */
+#define PARAM_NULL 0x00
+#define PARAM_ARRAY_ELEMENT 0x01
+#define PARAM_STATE_ELEMENT 0x02
+#define PARAM_PROGRAM_ELEMENT 0x03
+#define PARAM_PROGRAM_ELEMENTS 0x04
+#define PARAM_CONSTANT 0x05
+
+/* param state property */
+#define STATE_MATERIAL 0x01
+#define STATE_LIGHT 0x02
+#define STATE_LIGHT_MODEL 0x03
+#define STATE_LIGHT_PROD 0x04
+#define STATE_FOG 0x05
+#define STATE_MATRIX_ROWS 0x06
+/* GL_ARB_fragment_program */
+#define STATE_TEX_ENV 0x07
+#define STATE_DEPTH 0x08
+/* GL_ARB_vertex_program */
+#define STATE_TEX_GEN 0x09
+#define STATE_CLIP_PLANE 0x0A
+#define STATE_POINT 0x0B
+
+/* state material property */
+#define MATERIAL_AMBIENT 0x01
+#define MATERIAL_DIFFUSE 0x02
+#define MATERIAL_SPECULAR 0x03
+#define MATERIAL_EMISSION 0x04
+#define MATERIAL_SHININESS 0x05
+
+/* state light property */
+#define LIGHT_AMBIENT 0x01
+#define LIGHT_DIFFUSE 0x02
+#define LIGHT_SPECULAR 0x03
+#define LIGHT_POSITION 0x04
+#define LIGHT_ATTENUATION 0x05
+#define LIGHT_HALF 0x06
+#define LIGHT_SPOT_DIRECTION 0x07
+
+/* state light model property */
+#define LIGHT_MODEL_AMBIENT 0x01
+#define LIGHT_MODEL_SCENECOLOR 0x02
+
+/* state light product property */
+#define LIGHT_PROD_AMBIENT 0x01
+#define LIGHT_PROD_DIFFUSE 0x02
+#define LIGHT_PROD_SPECULAR 0x03
+
+/* state texture environment property */
+#define TEX_ENV_COLOR 0x01
+
+/* state texture generation coord property */
+#define TEX_GEN_EYE 0x01
+#define TEX_GEN_OBJECT 0x02
+
+/* state fog property */
+#define FOG_COLOR 0x01
+#define FOG_PARAMS 0x02
+
+/* state depth property */
+#define DEPTH_RANGE 0x01
+
+/* state point parameters property */
+#define POINT_SIZE 0x01
+#define POINT_ATTENUATION 0x02
+
+/* declaration */
+#define ATTRIB 0x01
+#define PARAM 0x02
+#define TEMP 0x03
+#define OUTPUT 0x04
+#define ALIAS 0x05
+/* GL_ARB_vertex_program */
+#define ADDRESS 0x06
+
+/*-----------------------------------------------------------------------
+ * From here on down is the semantic checking portion
+ *
+ */
+
+/**
+ * Variable Table Handling functions
+ */
+typedef enum
+{
+ vt_none,
+ vt_address,
+ vt_attrib,
+ vt_param,
+ vt_temp,
+ vt_output,
+ vt_alias
+} var_type;
+
+
+/*
+ * Setting an explicit field for each of the binding properties is a bit wasteful
+ * of space, but it should be much more clear when reading later on..
+ */
+struct var_cache
+{
+ GLubyte *name;
+ var_type type;
+ GLuint address_binding; /* The index of the address register we should
+ * be using */
+ GLuint attrib_binding; /* For type vt_attrib, see nvfragprog.h for values */
+ GLuint attrib_binding_idx; /* The index into the attrib register file corresponding
+ * to the state in attrib_binding */
+ GLuint attrib_is_generic; /* If the attrib was specified through a generic
+ * vertex attrib */
+ GLuint temp_binding; /* The index of the temp register we are to use */
+ GLuint output_binding; /* For type vt_output, see nvfragprog.h for values */
+ GLuint output_binding_idx; /* This is the index into the result register file
+ * corresponding to the bound result state */
+ struct var_cache *alias_binding; /* For type vt_alias, points to the var_cache entry
+ * that this is aliased to */
+ GLuint param_binding_type; /* {PROGRAM_STATE_VAR, PROGRAM_LOCAL_PARAM,
+ * PROGRAM_ENV_PARAM} */
+ GLuint param_binding_begin; /* This is the offset into the program_parameter_list where
+ * the tokens representing our bound state (or constants)
+ * start */
+ GLuint param_binding_length; /* 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 */
+ struct var_cache *next;
+};
+
+static GLvoid
+var_cache_create (struct var_cache **va)
+{
+ *va = (struct var_cache *) _mesa_malloc (sizeof (struct var_cache));
+ if (*va) {
+ (**va).name = NULL;
+ (**va).type = vt_none;
+ (**va).attrib_binding = ~0;
+ (**va).attrib_is_generic = 0;
+ (**va).temp_binding = ~0;
+ (**va).output_binding = ~0;
+ (**va).output_binding_idx = ~0;
+ (**va).param_binding_type = ~0;
+ (**va).param_binding_begin = ~0;
+ (**va).param_binding_length = ~0;
+ (**va).alias_binding = NULL;
+ (**va).next = NULL;
+ }
+}
+
+static GLvoid
+var_cache_destroy (struct var_cache **va)
+{
+ if (*va) {
+ var_cache_destroy (&(**va).next);
+ _mesa_free (*va);
+ *va = NULL;
+ }
+}
+
+static GLvoid
+var_cache_append (struct var_cache **va, struct var_cache *nv)
+{
+ if (*va)
+ var_cache_append (&(**va).next, nv);
+ else
+ *va = nv;
+}
+
+static struct var_cache *
+var_cache_find (struct var_cache *va, GLubyte * name)
+{
+ struct var_cache *first = va;
+
+ while (va) {
+ if (!strcmp ( (const char*) name, (const char*) va->name)) {
+ if (va->type == vt_alias)
+ return var_cache_find (first, va->name);
+ return va;
+ }
+
+ va = va->next;
+ }
+
+ return NULL;
+}
+
+/**
+ * constructs an integer from 4 GLubytes in LE format
+ */
+static GLuint
+parse_position (GLubyte ** inst)
+{
+ GLuint value;
+
+ value = (GLuint) (*(*inst)++);
+ value += (GLuint) (*(*inst)++) * 0x100;
+ value += (GLuint) (*(*inst)++) * 0x10000;
+ value += (GLuint) (*(*inst)++) * 0x1000000;
+
+ return value;
+}
+
+/**
+ * This will, given a string, lookup the string as a variable name in the
+ * var cache. If the name is found, the var cache node corresponding to the
+ * var name is returned. If it is not found, a new entry is allocated
+ *
+ * \param I Points into the binary array where the string identifier begins
+ * \param found 1 if the string was found in the var_cache, 0 if it was allocated
+ * \return The location on the var_cache corresponding the the string starting at I
+ */
+static struct var_cache *
+parse_string (GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program, GLuint * found)
+{
+ GLubyte *i = *inst;
+ struct var_cache *va = NULL;
+
+ *inst += _mesa_strlen ((char *) i) + 1;
+
+ va = var_cache_find (*vc_head, i);
+
+ if (va) {
+ *found = 1;
+ return va;
+ }
+
+ *found = 0;
+ var_cache_create (&va);
+ va->name = i;
+
+ var_cache_append (vc_head, va);
+
+ return va;
+}
+
+static char *
+parse_string_without_adding (GLubyte ** inst, struct arb_program *Program)
+{
+ GLubyte *i = *inst;
+
+ *inst += _mesa_strlen ((char *) i) + 1;
+
+ return (char *) i;
+}
+
+/**
+ * \return 0 if sign is plus, 1 if sign is minus
+ */
+static GLuint
+parse_sign (GLubyte ** inst)
+{
+ /*return *(*inst)++ != '+'; */
+
+ if (**inst == '-') {
+ (*inst)++;
+ return 1;
+ }
+ else if (**inst == '+') {
+ (*inst)++;
+ return 0;
+ }
+
+ return 0;
+}
+
+/**
+ * parses and returns signed integer
+ */
+static GLint
+parse_integer (GLubyte ** inst, struct arb_program *Program)
+{
+ GLint sign;
+ GLint value;
+
+ /* check if *inst points to '+' or '-'
+ * if yes, grab the sign and increment *inst
+ */
+ sign = parse_sign (inst);
+
+ /* now check if *inst points to 0
+ * if yes, increment the *inst and return the default value
+ */
+ if (**inst == 0) {
+ (*inst)++;
+ return 0;
+ }
+
+ /* parse the integer as you normally would do it */
+ value = _mesa_atoi (parse_string_without_adding (inst, Program));
+
+ /* now, after terminating 0 there is a position
+ * to parse it - parse_position()
+ */
+ Program->Position = parse_position (inst);
+
+ if (sign)
+ value *= -1;
+
+ return value;
+}
+
+/**
+ */
+static GLfloat
+parse_float (GLubyte ** inst, struct arb_program *Program)
+{
+ GLint tmp[5], denom;
+ GLuint leading_zeros =0;
+ GLfloat value = 0;
+
+#if 0
+ tmp[0] = parse_sign (inst); /* This is the sign of the number + - >0, - -> 1 */
+#endif
+ tmp[1] = parse_integer (inst, Program); /* This is the integer portion of the number */
+
+ /* Now we grab the fractional portion of the number (the digits after
+ * the .). We can have leading 0's here, which parse_integer will ignore,
+ * so we'll check for those first
+ */
+ while ((**inst == '0') && ( *(*inst+1) != 0))
+ {
+ leading_zeros++;
+ (*inst)++;
+ }
+ tmp[2] = parse_integer (inst, Program); /* This is the fractional portion of the number */
+ tmp[3] = parse_sign (inst); /* This is the sign of the exponent */
+ tmp[4] = parse_integer (inst, Program); /* This is the exponent */
+
+ value = (GLfloat) tmp[1];
+ denom = 1;
+ while (denom < tmp[2])
+ denom *= 10;
+ denom *= (GLint) _mesa_pow( 10, leading_zeros );
+ value += (GLfloat) tmp[2] / (GLfloat) denom;
+#if 0
+ if (tmp[0])
+ value *= -1;
+#endif
+ value *= (GLfloat) _mesa_pow (10, (GLfloat) tmp[3] * (GLfloat) tmp[4]);
+
+ return value;
+}
+
+
+/**
+ */
+static GLfloat
+parse_signed_float (GLubyte ** inst, struct arb_program *Program)
+{
+ GLint negate;
+ GLfloat value;
+
+ negate = parse_sign (inst);
+
+ value = parse_float (inst, Program);
+
+ if (negate)
+ value *= -1;
+
+ return value;
+}
+
+/**
+ * This picks out a constant value from the parsed array. The constant vector is r
+ * returned in the *values array, which should be of length 4.
+ *
+ * \param values - The 4 component vector with the constant value in it
+ */
+static GLvoid
+parse_constant (GLubyte ** inst, GLfloat *values, struct arb_program *Program,
+ GLboolean use)
+{
+ GLuint components, i;
+
+
+ switch (*(*inst)++) {
+ case CONSTANT_SCALAR:
+ if (use == GL_TRUE) {
+ values[0] =
+ values[1] =
+ values[2] = values[3] = parse_float (inst, Program);
+ }
+ else {
+ values[0] =
+ values[1] =
+ values[2] = values[3] = parse_signed_float (inst, Program);
+ }
+
+ break;
+ case CONSTANT_VECTOR:
+ values[0] = values[1] = values[2] = 0;
+ values[3] = 1;
+ components = *(*inst)++;
+ for (i = 0; i < components; i++) {
+ values[i] = parse_signed_float (inst, Program);
+ }
+ break;
+ }
+}
+
+/**
+ * \param offset The offset from the address register that we should
+ * address
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_relative_offset (GLcontext *ctx, GLubyte **inst, struct arb_program *Program,
+ GLint *offset)
+{
+ *offset = parse_integer(inst, Program);
+ if ((*offset > 63) || (*offset < -64)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Relative offset out of range");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Relative offset %d out of range",
+ *offset);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * \param color 0 if color type is primary, 1 if color type is secondary
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_color_type (GLcontext * ctx, GLubyte ** inst, struct arb_program *Program,
+ GLint * color)
+{
+ *color = *(*inst)++ != COLOR_PRIMARY;
+ return 0;
+}
+
+/**
+ * Get an integer corresponding to a generic vertex attribute.
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_generic_attrib_num(GLcontext *ctx, GLubyte ** inst,
+ struct arb_program *Program, GLuint *attrib)
+{
+ *attrib = parse_integer(inst, Program);
+
+ if ((*attrib < 0) || (*attrib > MAX_VERTEX_PROGRAM_ATTRIBS))
+ {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid generic vertex attribute index");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Invalid generic vertex attribute index");
+
+ return 1;
+ }
+
+ return 0;
+}
+
+
+/**
+ * \param coord The texture unit index
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_texcoord_num (GLcontext * ctx, GLubyte ** inst,
+ struct arb_program *Program, GLuint * coord)
+{
+ *coord = parse_integer (inst, Program);
+
+ if ((*coord < 0) || (*coord >= ctx->Const.MaxTextureUnits)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid texture unit index");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Invalid texture unit index");
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * \param coord The weight index
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_weight_num (GLcontext * ctx, GLubyte ** inst, struct arb_program *Program,
+ GLint * coord)
+{
+ *coord = parse_integer (inst, Program);
+
+ if ((*coord < 0) || (*coord >= 1)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid weight index");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Invalid weight index");
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * \param coord The clip plane index
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_clipplane_num (GLcontext * ctx, GLubyte ** inst,
+ struct arb_program *Program, GLint * coord)
+{
+ *coord = parse_integer (inst, Program);
+
+ if ((*coord < 0) || (*coord >= (GLint) ctx->Const.MaxClipPlanes)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid clip plane index");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Invalid clip plane index");
+ return 1;
+ }
+
+ return 0;
+}
+
+
+/**
+ * \return 0 on front face, 1 on back face
+ */
+static GLuint
+parse_face_type (GLubyte ** inst)
+{
+ switch (*(*inst)++) {
+ case FACE_FRONT:
+ return 0;
+
+ case FACE_BACK:
+ return 1;
+ }
+ return 0;
+}
+
+
+/**
+ * Given a matrix and a modifier token on the binary array, return tokens
+ * that _mesa_fetch_state() [program.c] can understand.
+ *
+ * \param matrix - the matrix we are talking about
+ * \param matrix_idx - the index of the matrix we have (for texture & program matricies)
+ * \param matrix_modifier - the matrix modifier (trans, inv, etc)
+ * \return 0 on sucess, 1 on failure
+ */
+static GLuint
+parse_matrix (GLcontext * ctx, GLubyte ** inst, struct arb_program *Program,
+ GLint * matrix, GLint * matrix_idx, GLint * matrix_modifier)
+{
+ GLubyte mat = *(*inst)++;
+
+ *matrix_idx = 0;
+
+ switch (mat) {
+ case MATRIX_MODELVIEW:
+ *matrix = STATE_MODELVIEW;
+ *matrix_idx = parse_integer (inst, Program);
+ if (*matrix_idx > 0) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "ARB_vertex_blend not supported\n");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "ARB_vertex_blend not supported\n");
+ return 1;
+ }
+ break;
+
+ case MATRIX_PROJECTION:
+ *matrix = STATE_PROJECTION;
+ break;
+
+ case MATRIX_MVP:
+ *matrix = STATE_MVP;
+ break;
+
+ case MATRIX_TEXTURE:
+ *matrix = STATE_TEXTURE;
+ *matrix_idx = parse_integer (inst, Program);
+ if (*matrix_idx >= (GLint) ctx->Const.MaxTextureUnits) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Texture Unit");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Texture Unit: %d", *matrix_idx);
+ return 1;
+ }
+ break;
+
+ /* This is not currently supported (ARB_matrix_palette) */
+ case MATRIX_PALETTE:
+ *matrix_idx = parse_integer (inst, Program);
+ _mesa_set_program_error (ctx, Program->Position,
+ "ARB_matrix_palette not supported\n");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "ARB_matrix_palette not supported\n");
+ return 1;
+ break;
+
+ case MATRIX_PROGRAM:
+ *matrix = STATE_PROGRAM;
+ *matrix_idx = parse_integer (inst, Program);
+ if (*matrix_idx >= (GLint) ctx->Const.MaxProgramMatrices) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Program Matrix");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Program Matrix: %d", *matrix_idx);
+ return 1;
+ }
+ break;
+ }
+
+ switch (*(*inst)++) {
+ case MATRIX_MODIFIER_IDENTITY:
+ *matrix_modifier = 0;
+ break;
+ case MATRIX_MODIFIER_INVERSE:
+ *matrix_modifier = STATE_MATRIX_INVERSE;
+ break;
+ case MATRIX_MODIFIER_TRANSPOSE:
+ *matrix_modifier = STATE_MATRIX_TRANSPOSE;
+ break;
+ case MATRIX_MODIFIER_INVTRANS:
+ *matrix_modifier = STATE_MATRIX_INVTRANS;
+ break;
+ }
+
+ return 0;
+}
+
+
+/**
+ * This parses a state string (rather, the binary version of it) into
+ * a 6-token sequence as described in _mesa_fetch_state() [program.c]
+ *
+ * \param inst - the start in the binary arry to start working from
+ * \param state_tokens - the storage for the 6-token state description
+ * \return - 0 on sucess, 1 on error
+ */
+static GLuint
+parse_state_single_item (GLcontext * ctx, GLubyte ** inst,
+ struct arb_program *Program, GLint * state_tokens)
+{
+ switch (*(*inst)++) {
+ case STATE_MATERIAL_PARSER:
+ state_tokens[0] = STATE_MATERIAL;
+ state_tokens[1] = parse_face_type (inst);
+ switch (*(*inst)++) {
+ case MATERIAL_AMBIENT:
+ state_tokens[2] = STATE_AMBIENT;
+ break;
+ case MATERIAL_DIFFUSE:
+ state_tokens[2] = STATE_DIFFUSE;
+ break;
+ case MATERIAL_SPECULAR:
+ state_tokens[2] = STATE_SPECULAR;
+ break;
+ case MATERIAL_EMISSION:
+ state_tokens[2] = STATE_EMISSION;
+ break;
+ case MATERIAL_SHININESS:
+ state_tokens[2] = STATE_SHININESS;
+ break;
+ }
+ break;
+
+ case STATE_LIGHT_PARSER:
+ state_tokens[0] = STATE_LIGHT;
+ state_tokens[1] = parse_integer (inst, Program);
+
+ /* Check the value of state_tokens[1] against the # of lights */
+ if (state_tokens[1] >= (GLint) ctx->Const.MaxLights) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Light Number");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Light Number: %d", state_tokens[1]);
+ return 1;
+ }
+
+ switch (*(*inst)++) {
+ case LIGHT_AMBIENT:
+ state_tokens[2] = STATE_AMBIENT;
+ break;
+ case LIGHT_DIFFUSE:
+ state_tokens[2] = STATE_DIFFUSE;
+ break;
+ case LIGHT_SPECULAR:
+ state_tokens[2] = STATE_SPECULAR;
+ break;
+ case LIGHT_POSITION:
+ state_tokens[2] = STATE_POSITION;
+ break;
+ case LIGHT_ATTENUATION:
+ state_tokens[2] = STATE_ATTENUATION;
+ break;
+ case LIGHT_HALF:
+ state_tokens[2] = STATE_HALF;
+ break;
+ case LIGHT_SPOT_DIRECTION:
+ state_tokens[2] = STATE_SPOT_DIRECTION;
+ break;
+ }
+ break;
+
+ case STATE_LIGHT_MODEL:
+ switch (*(*inst)++) {
+ case LIGHT_MODEL_AMBIENT:
+ state_tokens[0] = STATE_LIGHTMODEL_AMBIENT;
+ break;
+ case LIGHT_MODEL_SCENECOLOR:
+ state_tokens[0] = STATE_LIGHTMODEL_SCENECOLOR;
+ state_tokens[1] = parse_face_type (inst);
+ break;
+ }
+ break;
+
+ case STATE_LIGHT_PROD:
+ state_tokens[0] = STATE_LIGHTPROD;
+ state_tokens[1] = parse_integer (inst, Program);
+
+ /* Check the value of state_tokens[1] against the # of lights */
+ if (state_tokens[1] >= (GLint) ctx->Const.MaxLights) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Light Number");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Light Number: %d", state_tokens[1]);
+ return 1;
+ }
+
+ state_tokens[2] = parse_face_type (inst);
+ switch (*(*inst)++) {
+ case LIGHT_PROD_AMBIENT:
+ state_tokens[3] = STATE_AMBIENT;
+ break;
+ case LIGHT_PROD_DIFFUSE:
+ state_tokens[3] = STATE_DIFFUSE;
+ break;
+ case LIGHT_PROD_SPECULAR:
+ state_tokens[3] = STATE_SPECULAR;
+ break;
+ }
+ break;
+
+
+ case STATE_FOG:
+ switch (*(*inst)++) {
+ case FOG_COLOR:
+ state_tokens[0] = STATE_FOG_COLOR;
+ break;
+ case FOG_PARAMS:
+ state_tokens[0] = STATE_FOG_PARAMS;
+ break;
+ }
+ break;
+
+ case STATE_TEX_ENV:
+ state_tokens[1] = parse_integer (inst, Program);
+ switch (*(*inst)++) {
+ case TEX_ENV_COLOR:
+ state_tokens[0] = STATE_TEXENV_COLOR;
+ break;
+ }
+ break;
+
+ case STATE_TEX_GEN:
+ {
+ GLuint type, coord;
+
+ state_tokens[0] = STATE_TEXGEN;
+ /*state_tokens[1] = parse_integer (inst, Program);*/ /* Texture Unit */
+
+ if (parse_texcoord_num (ctx, inst, Program, &coord))
+ return 1;
+ state_tokens[1] = coord;
+
+ /* EYE or OBJECT */
+ type = *(*inst++);
+
+ /* 0 - s, 1 - t, 2 - r, 3 - q */
+ coord = *(*inst++);
+
+ if (type == TEX_GEN_EYE) {
+ switch (coord) {
+ case COMPONENT_X:
+ state_tokens[2] = STATE_TEXGEN_EYE_S;
+ break;
+ case COMPONENT_Y:
+ state_tokens[2] = STATE_TEXGEN_EYE_T;
+ break;
+ case COMPONENT_Z:
+ state_tokens[2] = STATE_TEXGEN_EYE_R;
+ break;
+ case COMPONENT_W:
+ state_tokens[2] = STATE_TEXGEN_EYE_Q;
+ break;
+ }
+ }
+ else {
+ switch (coord) {
+ case COMPONENT_X:
+ state_tokens[2] = STATE_TEXGEN_OBJECT_S;
+ break;
+ case COMPONENT_Y:
+ state_tokens[2] = STATE_TEXGEN_OBJECT_T;
+ break;
+ case COMPONENT_Z:
+ state_tokens[2] = STATE_TEXGEN_OBJECT_R;
+ break;
+ case COMPONENT_W:
+ state_tokens[2] = STATE_TEXGEN_OBJECT_Q;
+ break;
+ }
+ }
+ }
+ break;
+
+ case STATE_DEPTH:
+ switch (*(*inst)++) {
+ case DEPTH_RANGE:
+ state_tokens[0] = STATE_DEPTH_RANGE;
+ break;
+ }
+ break;
+
+ case STATE_CLIP_PLANE:
+ state_tokens[0] = STATE_CLIPPLANE;
+ state_tokens[1] = parse_integer (inst, Program);
+ if (parse_clipplane_num (ctx, inst, Program, &state_tokens[1]))
+ return 1;
+ break;
+
+ case STATE_POINT:
+ switch (*(*inst++)) {
+ case POINT_SIZE:
+ state_tokens[0] = STATE_POINT_SIZE;
+ break;
+
+ case POINT_ATTENUATION:
+ state_tokens[0] = STATE_POINT_ATTENUATION;
+ break;
+ }
+ break;
+
+ /* XXX: I think this is the correct format for a matrix row */
+ case STATE_MATRIX_ROWS:
+ state_tokens[0] = STATE_MATRIX;
+ if (parse_matrix
+ (ctx, inst, Program, &state_tokens[1], &state_tokens[2],
+ &state_tokens[5]))
+ return 1;
+
+ state_tokens[3] = parse_integer (inst, Program); /* The first row to grab */
+
+ if ((**inst) != 0) { /* Either the last row, 0 */
+ state_tokens[4] = parse_integer (inst, Program);
+ if (state_tokens[4] < state_tokens[3]) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Second matrix index less than the first");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Second matrix index (%d) less than the first (%d)",
+ state_tokens[4], state_tokens[3]);
+ return 1;
+ }
+ }
+ else {
+ state_tokens[4] = state_tokens[3];
+ (*inst)++;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * This parses a state string (rather, the binary version of it) into
+ * a 6-token similar for the state fetching code in program.c
+ *
+ * One might ask, why fetch these parameters into just like you fetch
+ * state when they are already stored in other places?
+ *
+ * Because of array offsets -> We can stick env/local parameters in the
+ * middle of a parameter array and then index someplace into the array
+ * when we execute.
+ *
+ * One optimization might be to only do this for the cases where the
+ * env/local parameters end up inside of an array, and leave the
+ * single parameters (or arrays of pure env/local pareameters) in their
+ * respective register files.
+ *
+ * For ENV parameters, the format is:
+ * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
+ * state_tokens[1] = STATE_ENV
+ * state_tokens[2] = the parameter index
+ *
+ * for LOCAL parameters, the format is:
+ * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
+ * state_tokens[1] = STATE_LOCAL
+ * state_tokens[2] = the parameter index
+ *
+ * \param inst - the start in the binary arry to start working from
+ * \param state_tokens - the storage for the 6-token state description
+ * \return - 0 on sucess, 1 on failure
+ */
+static GLuint
+parse_program_single_item (GLcontext * ctx, GLubyte ** inst,
+ struct arb_program *Program, GLint * state_tokens)
+{
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB)
+ state_tokens[0] = STATE_FRAGMENT_PROGRAM;
+ else
+ state_tokens[0] = STATE_VERTEX_PROGRAM;
+
+
+ switch (*(*inst)++) {
+ case PROGRAM_PARAM_ENV:
+ state_tokens[1] = STATE_ENV;
+ state_tokens[2] = parse_integer (inst, Program);
+
+ /* Check state_tokens[2] against the number of ENV parameters available */
+ if (((Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) &&
+ (state_tokens[2] >= (GLint) ctx->Const.MaxFragmentProgramEnvParams))
+ ||
+ ((Program->Base.Target == GL_VERTEX_PROGRAM_ARB) &&
+ (state_tokens[2] >= (GLint) ctx->Const.MaxVertexProgramEnvParams))) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Program Env Parameter");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Program Env Parameter: %d",
+ state_tokens[2]);
+ return 1;
+ }
+
+ break;
+
+ case PROGRAM_PARAM_LOCAL:
+ state_tokens[1] = STATE_LOCAL;
+ state_tokens[2] = parse_integer (inst, Program);
+
+ /* Check state_tokens[2] against the number of LOCAL parameters available */
+ if (((Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) &&
+ (state_tokens[2] >= (GLint) ctx->Const.MaxFragmentProgramLocalParams))
+ ||
+ ((Program->Base.Target == GL_VERTEX_PROGRAM_ARB) &&
+ (state_tokens[2] >= (GLint) ctx->Const.MaxVertexProgramLocalParams))) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Program Local Parameter");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Program Local Parameter: %d",
+ state_tokens[2]);
+ return 1;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * For ARB_vertex_program, programs are not allowed to use both an explicit
+ * vertex attribute and a generic vertex attribute corresponding to the same
+ * state. See section 2.14.3.1 of the GL_ARB_vertex_program spec.
+ *
+ * This will walk our var_cache and make sure that nobody does anything fishy.
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+generic_attrib_check(struct var_cache *vc_head)
+{
+ int a;
+ struct var_cache *curr;
+ GLboolean explicitAttrib[MAX_VERTEX_PROGRAM_ATTRIBS],
+ genericAttrib[MAX_VERTEX_PROGRAM_ATTRIBS];
+
+ for (a=0; a<MAX_VERTEX_PROGRAM_ATTRIBS; a++) {
+ explicitAttrib[a] = GL_FALSE;
+ genericAttrib[a] = GL_FALSE;
+ }
+
+ curr = vc_head;
+ while (curr) {
+ if (curr->type == vt_attrib) {
+ if (curr->attrib_is_generic)
+ genericAttrib[ curr->attrib_binding_idx ] = GL_TRUE;
+ else
+ explicitAttrib[ curr->attrib_binding_idx ] = GL_TRUE;
+ }
+
+ curr = curr->next;
+ }
+
+ for (a=0; a<MAX_VERTEX_PROGRAM_ATTRIBS; a++) {
+ if ((explicitAttrib[a]) && (genericAttrib[a]))
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * This will handle the binding side of an ATTRIB var declaration
+ *
+ * \param binding - the fragment input register state, defined in nvfragprog.h
+ * \param binding_idx - the index in the attrib register file that binding is associated with
+ * \return returns 0 on sucess, 1 on error
+ *
+ * See nvfragparse.c for attrib register file layout
+ */
+static GLuint
+parse_attrib_binding (GLcontext * ctx, GLubyte ** inst,
+ struct arb_program *Program, GLuint * binding,
+ GLuint * binding_idx, GLuint *is_generic)
+{
+ GLuint texcoord;
+ GLint coord;
+ GLint err = 0;
+
+ *is_generic = 0;
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ switch (*(*inst)++) {
+ case FRAGMENT_ATTRIB_COLOR:
+ err = parse_color_type (ctx, inst, Program, &coord);
+ *binding = FRAG_ATTRIB_COL0 + coord;
+ *binding_idx = 1 + coord;
+ break;
+
+ case FRAGMENT_ATTRIB_TEXCOORD:
+ err = parse_texcoord_num (ctx, inst, Program, &texcoord);
+ *binding = FRAG_ATTRIB_TEX0 + texcoord;
+ *binding_idx = 4 + texcoord;
+ break;
+
+ case FRAGMENT_ATTRIB_FOGCOORD:
+ *binding = FRAG_ATTRIB_FOGC;
+ *binding_idx = 3;
+ break;
+
+ case FRAGMENT_ATTRIB_POSITION:
+ *binding = FRAG_ATTRIB_WPOS;
+ *binding_idx = 0;
+ break;
+
+ default:
+ err = 1;
+ break;
+ }
+ }
+ else {
+ switch (*(*inst)++) {
+ case VERTEX_ATTRIB_POSITION:
+ *binding = VERT_ATTRIB_POS;
+ *binding_idx = 0;
+ break;
+
+ case VERTEX_ATTRIB_WEIGHT:
+ {
+ GLint weight;
+
+ err = parse_weight_num (ctx, inst, Program, &weight);
+ *binding = VERT_ATTRIB_WEIGHT;
+ *binding_idx = 1;
+ }
+ _mesa_set_program_error (ctx, Program->Position,
+ "ARB_vertex_blend not supported\n");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "ARB_vertex_blend not supported\n");
+ return 1;
+ break;
+
+ case VERTEX_ATTRIB_NORMAL:
+ *binding = VERT_ATTRIB_NORMAL;
+ *binding_idx = 2;
+ break;
+
+ case VERTEX_ATTRIB_COLOR:
+ {
+ GLint color;
+
+ err = parse_color_type (ctx, inst, Program, &color);
+ if (color) {
+ *binding = VERT_ATTRIB_COLOR1;
+ *binding_idx = 4;
+ }
+ else {
+ *binding = VERT_ATTRIB_COLOR0;
+ *binding_idx = 3;
+ }
+ }
+ break;
+
+ case VERTEX_ATTRIB_FOGCOORD:
+ *binding = VERT_ATTRIB_FOG;
+ *binding_idx = 5;
+ break;
+
+ case VERTEX_ATTRIB_TEXCOORD:
+ {
+ GLuint unit;
+
+ err = parse_texcoord_num (ctx, inst, Program, &unit);
+ *binding = VERT_ATTRIB_TEX0 + unit;
+ *binding_idx = 8 + unit;
+ }
+ break;
+
+ /* It looks like we don't support this at all, atm */
+ case VERTEX_ATTRIB_MATRIXINDEX:
+ parse_integer (inst, Program);
+ _mesa_set_program_error (ctx, Program->Position,
+ "ARB_palette_matrix not supported");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "ARB_palette_matrix not supported");
+ return 1;
+ break;
+
+ case VERTEX_ATTRIB_GENERIC:
+ {
+ GLuint attrib;
+
+ if (!parse_generic_attrib_num(ctx, inst, Program, &attrib)) {
+ *is_generic = 1;
+ switch (attrib) {
+ case 0:
+ *binding = VERT_ATTRIB_POS;
+ break;
+ case 1:
+ *binding = VERT_ATTRIB_WEIGHT;
+ break;
+ case 2:
+ *binding = VERT_ATTRIB_NORMAL;
+ break;
+ case 3:
+ *binding = VERT_ATTRIB_COLOR0;
+ break;
+ case 4:
+ *binding = VERT_ATTRIB_COLOR1;
+ break;
+ case 5:
+ *binding = VERT_ATTRIB_FOG;
+ break;
+ case 6:
+ break;
+ case 7:
+ break;
+ default:
+ *binding = VERT_ATTRIB_TEX0 + (attrib-8);
+ break;
+ }
+ *binding_idx = attrib;
+ }
+ }
+ break;
+
+ default:
+ err = 1;
+ break;
+ }
+ }
+
+ /* Can this even happen? */
+ if (err) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Bad attribute binding");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Bad attribute binding");
+ }
+
+ Program->InputsRead |= (1 << *binding_idx);
+
+ return err;
+}
+
+/**
+ * This translates between a binary token for an output variable type
+ * and the mesa token for the same thing.
+ *
+ *
+ * XXX: What is the 'name' for vertex program state? -> do we need it?
+ * I don't think we do;
+ *
+ * See nvfragprog.h for definitions
+ *
+ * \param inst - The parsed tokens
+ * \param binding - The name of the state we are binding too
+ * \param binding_idx - The index into the result register file that this is bound too
+ *
+ * See nvfragparse.c for the register file layout for fragment programs
+ * See nvvertparse.c for the register file layout for vertex programs
+ */
+static GLuint
+parse_result_binding (GLcontext * ctx, GLubyte ** inst, GLuint * binding,
+ GLuint * binding_idx, struct arb_program *Program)
+{
+ GLuint b;
+
+ switch (*(*inst)++) {
+ case FRAGMENT_RESULT_COLOR:
+ /* for frag programs, this is FRAGMENT_RESULT_COLOR */
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ *binding = FRAG_OUTPUT_COLR;
+ *binding_idx = 0;
+ }
+ /* for vtx programs, this is VERTEX_RESULT_POSITION */
+ else {
+ *binding_idx = 0;
+ }
+ break;
+
+ case FRAGMENT_RESULT_DEPTH:
+ /* for frag programs, this is FRAGMENT_RESULT_DEPTH */
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ *binding = FRAG_OUTPUT_DEPR;
+ *binding_idx = 2;
+ }
+ /* for vtx programs, this is VERTEX_RESULT_COLOR */
+ else {
+ GLint color_type;
+ GLuint face_type = parse_face_type(inst);
+ GLint color_type_ret = parse_color_type(ctx, inst, Program, &color_type);
+
+ /* back face */
+ if (face_type) {
+ if (color_type_ret) return 1;
+
+ /* secondary color */
+ if (color_type) {
+ *binding_idx = 4;
+ }
+ /* primary color */
+ else {
+ *binding_idx = 3;
+ }
+ }
+ /* front face */
+ else {
+ /* secondary color */
+ if (color_type) {
+ *binding_idx = 2;
+ }
+ /* primary color */
+ else {
+ *binding_idx = 1;
+ }
+ }
+ }
+ break;
+
+ case VERTEX_RESULT_FOGCOORD:
+ *binding_idx = 5;
+ break;
+
+ case VERTEX_RESULT_POINTSIZE:
+ *binding_idx = 6;
+ break;
+
+ case VERTEX_RESULT_TEXCOORD:
+ if (parse_texcoord_num (ctx, inst, Program, &b))
+ return 1;
+ *binding_idx = 7 + b;
+ break;
+ }
+
+ Program->OutputsWritten |= (1 << *binding_idx);
+
+ return 0;
+}
+
+/**
+ * This handles the declaration of ATTRIB variables
+ *
+ * XXX: Still needs
+ * parse_vert_attrib_binding(), or something like that
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLint
+parse_attrib (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found;
+ char *error_msg;
+ struct var_cache *attrib_var;
+
+ attrib_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+ if (found) {
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) attrib_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ attrib_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ attrib_var->type = vt_attrib;
+
+ /* I think this is ok now - karl */
+ /* XXX: */
+ /*if (Program->type == GL_FRAGMENT_PROGRAM_ARB) */
+ {
+ if (parse_attrib_binding
+ (ctx, inst, Program, &attrib_var->attrib_binding,
+ &attrib_var->attrib_binding_idx, &attrib_var->attrib_is_generic))
+ return 1;
+ if (generic_attrib_check(*vc_head)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Cannot use both a generic vertex attribute and a specific attribute of the same type");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Cannot use both a generic vertex attribute and a specific attribute of the same type");
+ return 1;
+ }
+
+ }
+
+ Program->Base.NumAttributes++;
+ return 0;
+}
+
+/**
+ * \param use -- TRUE if we're called when declaring implicit parameters,
+ * FALSE if we're declaraing variables. This has to do with
+ * if we get a signed or unsigned float for scalar constants
+ */
+static GLuint
+parse_param_elements (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache *param_var,
+ struct arb_program *Program, GLboolean use)
+{
+ GLint idx;
+ GLuint err;
+ GLint state_tokens[6];
+ GLfloat const_values[4];
+
+ err = 0;
+
+ switch (*(*inst)++) {
+ case PARAM_STATE_ELEMENT:
+
+ if (parse_state_single_item (ctx, inst, Program, state_tokens))
+ return 1;
+
+ /* If we adding STATE_MATRIX that has multiple rows, we need to
+ * unroll it and call _mesa_add_state_reference() for each row
+ */
+ if ((state_tokens[0] == STATE_MATRIX)
+ && (state_tokens[3] != state_tokens[4])) {
+ GLint row;
+ GLint first_row = state_tokens[3];
+ GLint last_row = state_tokens[4];
+
+ for (row = first_row; row <= last_row; row++) {
+ state_tokens[3] = state_tokens[4] = row;
+
+ idx =
+ _mesa_add_state_reference (Program->Parameters,
+ state_tokens);
+ if (param_var->param_binding_begin == ~0U)
+ param_var->param_binding_begin = idx;
+ param_var->param_binding_length++;
+ Program->Base.NumParameters++;
+ }
+ }
+ else {
+ idx =
+ _mesa_add_state_reference (Program->Parameters, state_tokens);
+ if (param_var->param_binding_begin == ~0U)
+ param_var->param_binding_begin = idx;
+ param_var->param_binding_length++;
+ Program->Base.NumParameters++;
+ }
+ break;
+
+ case PARAM_PROGRAM_ELEMENT:
+
+ if (parse_program_single_item (ctx, inst, Program, state_tokens))
+ return 1;
+ idx = _mesa_add_state_reference (Program->Parameters, state_tokens);
+ if (param_var->param_binding_begin == ~0U)
+ param_var->param_binding_begin = idx;
+ param_var->param_binding_length++;
+ Program->Base.NumParameters++;
+
+ /* Check if there is more: 0 -> we're done, else its an integer */
+ if (**inst) {
+ GLuint out_of_range, new_idx;
+ GLuint start_idx = state_tokens[2] + 1;
+ GLuint end_idx = parse_integer (inst, Program);
+
+ out_of_range = 0;
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ if (((state_tokens[1] == STATE_ENV)
+ && (end_idx >= ctx->Const.MaxFragmentProgramEnvParams))
+ || ((state_tokens[1] == STATE_LOCAL)
+ && (end_idx >=
+ ctx->Const.MaxFragmentProgramLocalParams)))
+ out_of_range = 1;
+ }
+ else {
+ if (((state_tokens[1] == STATE_ENV)
+ && (end_idx >= ctx->Const.MaxVertexProgramEnvParams))
+ || ((state_tokens[1] == STATE_LOCAL)
+ && (end_idx >=
+ ctx->Const.MaxVertexProgramLocalParams)))
+ out_of_range = 1;
+ }
+ if (out_of_range) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Invalid Program Parameter");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Invalid Program Parameter: %d", end_idx);
+ return 1;
+ }
+
+ for (new_idx = start_idx; new_idx <= end_idx; new_idx++) {
+ state_tokens[2] = new_idx;
+ idx =
+ _mesa_add_state_reference (Program->Parameters,
+ state_tokens);
+ param_var->param_binding_length++;
+ Program->Base.NumParameters++;
+ }
+ }
+ else
+ {
+ (*inst)++;
+ }
+ break;
+
+ case PARAM_CONSTANT:
+ parse_constant (inst, const_values, Program, use);
+ idx =
+ _mesa_add_named_constant (Program->Parameters,
+ (char *) param_var->name, const_values);
+ if (param_var->param_binding_begin == ~0U)
+ param_var->param_binding_begin = idx;
+ param_var->param_binding_length++;
+ Program->Base.NumParameters++;
+ break;
+
+ default:
+ _mesa_set_program_error (ctx, Program->Position,
+ "Unexpected token in parse_param_elements()");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Unexpected token in parse_param_elements()");
+ return 1;
+ }
+
+ /* Make sure we haven't blown past our parameter limits */
+ if (((Program->Base.Target == GL_VERTEX_PROGRAM_ARB) &&
+ (Program->Base.NumParameters >=
+ ctx->Const.MaxVertexProgramLocalParams))
+ || ((Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB)
+ && (Program->Base.NumParameters >=
+ ctx->Const.MaxFragmentProgramLocalParams))) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Too many parameter variables");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Too many parameter variables");
+ return 1;
+ }
+
+ return err;
+}
+
+/**
+ * This picks out PARAM program parameter bindings.
+ *
+ * XXX: This needs to be stressed & tested
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_param (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found, specified_length, err;
+ char *error_msg;
+ struct var_cache *param_var;
+
+ err = 0;
+ param_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+
+ if (found) {
+ error_msg = (char *) _mesa_malloc (_mesa_strlen ((char *) param_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ param_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ specified_length = parse_integer (inst, Program);
+
+ if (specified_length < 0) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Negative parameter array length");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Negative parameter array length: %d", specified_length);
+ return 1;
+ }
+
+ param_var->type = vt_param;
+ param_var->param_binding_length = 0;
+
+ /* Right now, everything is shoved into the main state register file.
+ *
+ * In the future, it would be nice to leave things ENV/LOCAL params
+ * in their respective register files, if possible
+ */
+ param_var->param_binding_type = PROGRAM_STATE_VAR;
+
+ /* Remember to:
+ * * - add each guy to the parameter list
+ * * - increment the param_var->param_binding_len
+ * * - store the param_var->param_binding_begin for the first one
+ * * - compare the actual len to the specified len at the end
+ */
+ while (**inst != PARAM_NULL) {
+ if (parse_param_elements (ctx, inst, param_var, Program, GL_FALSE))
+ return 1;
+ }
+
+ /* Test array length here! */
+ if (specified_length) {
+ if (specified_length != param_var->param_binding_length) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Declared parameter array lenght does not match parameter list");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Declared parameter array lenght does not match parameter list");
+ }
+ }
+
+ (*inst)++;
+
+ return 0;
+}
+
+/**
+ *
+ */
+static GLuint
+parse_param_use (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program, struct var_cache **new_var)
+{
+ struct var_cache *param_var;
+
+ /* First, insert a dummy entry into the var_cache */
+ var_cache_create (¶m_var);
+ param_var->name = (GLubyte *) _mesa_strdup (" ");
+ param_var->type = vt_param;
+
+ param_var->param_binding_length = 0;
+ /* Don't fill in binding_begin; We use the default value of -1
+ * to tell if its already initialized, elsewhere.
+ *
+ * param_var->param_binding_begin = 0;
+ */
+ param_var->param_binding_type = PROGRAM_STATE_VAR;
+
+ var_cache_append (vc_head, param_var);
+
+ /* Then fill it with juicy parameter goodness */
+ if (parse_param_elements (ctx, inst, param_var, Program, GL_TRUE))
+ return 1;
+
+ *new_var = param_var;
+
+ return 0;
+}
+
+
+/**
+ * This handles the declaration of TEMP variables
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_temp (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found;
+ struct var_cache *temp_var;
+ char *error_msg;
+
+ while (**inst != 0) {
+ temp_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+ if (found) {
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) temp_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ temp_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ temp_var->type = vt_temp;
+
+ if (((Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) &&
+ (Program->Base.NumTemporaries >=
+ ctx->Const.MaxFragmentProgramTemps))
+ || ((Program->Base.Target == GL_VERTEX_PROGRAM_ARB)
+ && (Program->Base.NumTemporaries >=
+ ctx->Const.MaxVertexProgramTemps))) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Too many TEMP variables declared");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Too many TEMP variables declared");
+ return 1;
+ }
+
+ temp_var->temp_binding = Program->Base.NumTemporaries;
+ Program->Base.NumTemporaries++;
+ }
+ (*inst)++;
+
+ return 0;
+}
+
+/**
+ * This handles variables of the OUTPUT variety
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_output (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found;
+ struct var_cache *output_var;
+
+ output_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+ if (found) {
+ char *error_msg;
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) output_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ output_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ output_var->type = vt_output;
+ return parse_result_binding (ctx, inst, &output_var->output_binding,
+ &output_var->output_binding_idx, Program);
+}
+
+/**
+ * This handles variables of the ALIAS kind
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_alias (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found;
+ struct var_cache *temp_var;
+ char *error_msg;
+
+
+ temp_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+
+ if (found) {
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) temp_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ temp_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ temp_var->type = vt_alias;
+ temp_var->alias_binding = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+
+ if (!found)
+ {
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) temp_var->name) + 40);
+ _mesa_sprintf (error_msg, "Alias value %s is not defined",
+ temp_var->alias_binding->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * This handles variables of the ADDRESS kind
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_address (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLuint found;
+ struct var_cache *temp_var;
+ char *error_msg;
+
+ while (**inst != 0) {
+ temp_var = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+ if (found) {
+ error_msg = (char *)
+ _mesa_malloc (_mesa_strlen ((char *) temp_var->name) + 40);
+ _mesa_sprintf (error_msg, "Duplicate Varible Declaration: %s",
+ temp_var->name);
+
+ _mesa_set_program_error (ctx, Program->Position, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, error_msg);
+
+ _mesa_free (error_msg);
+ return 1;
+ }
+
+ temp_var->type = vt_address;
+
+ if (Program->Base.NumAddressRegs >=
+ ctx->Const.MaxVertexProgramAddressRegs) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Too many ADDRESS variables declared");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Too many ADDRESS variables declared");
+ return 1;
+ }
+
+ temp_var->address_binding = Program->Base.NumAddressRegs;
+ Program->Base.NumAddressRegs++;
+ }
+ (*inst)++;
+
+ return 0;
+}
+
+/**
+ * Parse a program declaration
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLint
+parse_declaration (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLint err = 0;
+
+ switch (*(*inst)++) {
+ case ADDRESS:
+ err = parse_address (ctx, inst, vc_head, Program);
+ break;
+
+ case ALIAS:
+ err = parse_alias (ctx, inst, vc_head, Program);
+ break;
+
+ case ATTRIB:
+ err = parse_attrib (ctx, inst, vc_head, Program);
+ break;
+
+ case OUTPUT:
+ err = parse_output (ctx, inst, vc_head, Program);
+ break;
+
+ case PARAM:
+ err = parse_param (ctx, inst, vc_head, Program);
+ break;
+
+ case TEMP:
+ err = parse_temp (ctx, inst, vc_head, Program);
+ break;
+ }
+
+ return err;
+}
+
+/**
+ * Handle the parsing out of a masked destination register
+ *
+ * If we are a vertex program, make sure we don't write to
+ * result.position of we have specified that the program is
+ * position invariant
+ *
+ * \param File - The register file we write to
+ * \param Index - The register index we write to
+ * \param WriteMask - The mask controlling which components we write (1->write)
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_masked_dst_reg (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head, struct arb_program *Program,
+ GLint * File, GLint * Index, GLboolean * WriteMask)
+{
+ GLuint result;
+ GLubyte mask;
+ struct var_cache *dst;
+
+ /* We either have a result register specified, or a
+ * variable that may or may not be writable
+ */
+ switch (*(*inst)++) {
+ case REGISTER_RESULT:
+ if (parse_result_binding
+ (ctx, inst, &result, (GLuint *) Index, Program))
+ return 1;
+ *File = PROGRAM_OUTPUT;
+ break;
+
+ case REGISTER_ESTABLISHED_NAME:
+ dst = parse_string (inst, vc_head, Program, &result);
+ Program->Position = parse_position (inst);
+
+ /* If the name has never been added to our symbol table, we're hosed */
+ if (!result) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "0: Undefined variable");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "0: Undefined variable: %s",
+ dst->name);
+ return 1;
+ }
+
+ switch (dst->type) {
+ case vt_output:
+ *File = PROGRAM_OUTPUT;
+ *Index = dst->output_binding_idx;
+ break;
+
+ case vt_temp:
+ *File = PROGRAM_TEMPORARY;
+ *Index = dst->temp_binding;
+ break;
+
+ /* If the var type is not vt_output or vt_temp, no go */
+ default:
+ _mesa_set_program_error (ctx, Program->Position,
+ "Destination register is read only");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Destination register is read only: %s",
+ dst->name);
+ return 1;
+ }
+ break;
+
+ default:
+ _mesa_set_program_error (ctx, Program->Position,
+ "Unexpected opcode in parse_masked_dst_reg()");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Unexpected opcode in parse_masked_dst_reg()");
+ return 1;
+ }
+
+
+ /* Position invariance test */
+ /* This test is done now in syntax portion - when position invariance OPTION
+ is specified, "result.position" rule is disabled so there is no way
+ to write the position
+ */
+ /*if ((Program->HintPositionInvariant) && (*File == PROGRAM_OUTPUT) &&
+ (*Index == 0)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Vertex program specified position invariance and wrote vertex position");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Vertex program specified position invariance and wrote vertex position");
+ }*/
+
+ /* And then the mask.
+ * w,a -> bit 0
+ * z,b -> bit 1
+ * y,g -> bit 2
+ * x,r -> bit 3
+ */
+ mask = *(*inst)++;
+
+ WriteMask[0] = (GLboolean) (mask & (1 << 3)) >> 3;
+ WriteMask[1] = (GLboolean) (mask & (1 << 2)) >> 2;
+ WriteMask[2] = (GLboolean) (mask & (1 << 1)) >> 1;
+ WriteMask[3] = (GLboolean) (mask & (1));
+
+ return 0;
+}
+
+
+/**
+ * Handle the parsing of a address register
+ *
+ * \param Index - The register index we write to
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_address_reg (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head,
+ struct arb_program *Program, GLint * Index)
+{
+ struct var_cache *dst;
+ GLuint result;
+
+ dst = parse_string (inst, vc_head, Program, &result);
+ Program->Position = parse_position (inst);
+
+ /* If the name has never been added to our symbol table, we're hosed */
+ if (!result) {
+ _mesa_set_program_error (ctx, Program->Position, "Undefined variable");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Undefined variable: %s",
+ dst->name);
+ return 1;
+ }
+
+ if (dst->type != vt_address) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Variable is not of type ADDRESS");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Variable: %s is not of type ADDRESS", dst->name);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * Handle the parsing out of a masked address register
+ *
+ * \param Index - The register index we write to
+ * \param WriteMask - The mask controlling which components we write (1->write)
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLuint
+parse_masked_address_reg (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head,
+ struct arb_program *Program, GLint * Index,
+ GLboolean * WriteMask)
+{
+ if (parse_address_reg (ctx, inst, vc_head, Program, Index))
+ return 1;
+
+ /* This should be 0x8 */
+ (*inst)++;
+
+ /* Writemask of .x is implied */
+ WriteMask[0] = 1;
+ WriteMask[1] = WriteMask[2] = WriteMask[3] = 0;
+
+ return 0;
+}
+
+
+/**
+ * Parse out a swizzle mask.
+ *
+ * The values in the input stream are:
+ * COMPONENT_X -> x/r
+ * COMPONENT_Y -> y/g
+ * COMPONENT_Z-> z/b
+ * COMPONENT_W-> w/a
+ *
+ * The values in the output mask are:
+ * 0 -> x/r
+ * 1 -> y/g
+ * 2 -> z/b
+ * 3 -> w/a
+ *
+ * The len parameter allows us to grab 4 components for a vector
+ * swizzle, or just 1 component for a scalar src register selection
+ */
+static GLuint
+parse_swizzle_mask (GLubyte ** inst, GLubyte * mask, GLint len)
+{
+ GLint a;
+
+ for (a = 0; a < 4; a++)
+ mask[a] = a;
+
+ for (a = 0; a < len; a++) {
+ switch (*(*inst)++) {
+ case COMPONENT_X:
+ mask[a] = 0;
+ break;
+
+ case COMPONENT_Y:
+ mask[a] = 1;
+ break;
+
+ case COMPONENT_Z:
+ mask[a] = 2;
+ break;
+
+ case COMPONENT_W:
+ mask[a] = 3;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ */
+static GLuint
+parse_extended_swizzle_mask (GLubyte ** inst, GLubyte * mask, GLboolean * Negate)
+{
+ GLint a;
+ GLubyte swz;
+
+ *Negate = GL_FALSE;
+ for (a = 0; a < 4; a++) {
+ if (parse_sign (inst))
+ *Negate = GL_TRUE;
+
+ swz = *(*inst)++;
+
+ switch (swz) {
+ case COMPONENT_0:
+ mask[a] = SWIZZLE_ZERO;
+ break;
+ case COMPONENT_1:
+ mask[a] = SWIZZLE_ONE;
+ break;
+ case COMPONENT_X:
+ mask[a] = SWIZZLE_X;
+ break;
+ case COMPONENT_Y:
+ mask[a] = SWIZZLE_Y;
+ break;
+ case COMPONENT_Z:
+ mask[a] = SWIZZLE_Z;
+ break;
+ case COMPONENT_W:
+ mask[a] = SWIZZLE_W;
+ break;
+
+ }
+#if 0
+ if (swz == 0)
+ mask[a] = SWIZZLE_ZERO;
+ else if (swz == 1)
+ mask[a] = SWIZZLE_ONE;
+ else
+ mask[a] = swz - 2;
+#endif
+
+ }
+
+ return 0;
+}
+
+
+static GLuint
+parse_src_reg (GLcontext * ctx, GLubyte ** inst, struct var_cache **vc_head,
+ struct arb_program *Program, GLint * File, GLint * Index,
+ GLboolean *IsRelOffset )
+{
+ struct var_cache *src;
+ GLuint binding_state, binding_idx, is_generic, found, offset;
+
+ /* And the binding for the src */
+ switch (*(*inst)++) {
+ case REGISTER_ATTRIB:
+ if (parse_attrib_binding
+ (ctx, inst, Program, &binding_state, &binding_idx, &is_generic))
+ return 1;
+ *File = PROGRAM_INPUT;
+ *Index = binding_idx;
+
+ /* We need to insert a dummy variable into the var_cache so we can
+ * catch generic vertex attrib aliasing errors
+ */
+ var_cache_create(&src);
+ src->type = vt_attrib;
+ src->name = (GLubyte *)_mesa_strdup("Dummy Attrib Variable");
+ src->attrib_binding = binding_state;
+ src->attrib_binding_idx = binding_idx;
+ src->attrib_is_generic = is_generic;
+ var_cache_append(vc_head, src);
+ if (generic_attrib_check(*vc_head)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Cannot use both a generic vertex attribute and a specific attribute of the same type");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Cannot use both a generic vertex attribute and a specific attribute of the same type");
+ return 1;
+ }
+ break;
+
+ case REGISTER_PARAM:
+ switch (**inst) {
+ case PARAM_ARRAY_ELEMENT:
+ (*inst)++;
+ src = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+
+ if (!found) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "2: Undefined variable");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "2: Undefined variable: %s", src->name);
+ return 1;
+ }
+
+ *File = src->param_binding_type;
+
+ switch (*(*inst)++) {
+ case ARRAY_INDEX_ABSOLUTE:
+ offset = parse_integer (inst, Program);
+
+ if ((offset < 0)
+ || (offset >= src->param_binding_length)) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Index out of range");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Index %d out of range for %s", offset,
+ src->name);
+ return 1;
+ }
+
+ *Index = src->param_binding_begin + offset;
+ break;
+
+ case ARRAY_INDEX_RELATIVE:
+ {
+ GLint addr_reg_idx, rel_off;
+
+ /* First, grab the address regiseter */
+ if (parse_address_reg (ctx, inst, vc_head, Program, &addr_reg_idx))
+ return 1;
+
+ /* And the .x */
+ ((*inst)++);
+ ((*inst)++);
+ ((*inst)++);
+ ((*inst)++);
+
+ /* Then the relative offset */
+ if (parse_relative_offset(ctx, inst, Program, &rel_off)) return 1;
+
+ /* And store it properly */
+ *Index = src->param_binding_begin + rel_off;
+ *IsRelOffset = 1;
+ }
+ break;
+ }
+ break;
+
+ default:
+
+ if (parse_param_use (ctx, inst, vc_head, Program, &src))
+ return 1;
+
+ *File = src->param_binding_type;
+ *Index = src->param_binding_begin;
+ break;
+ }
+ break;
+
+ case REGISTER_ESTABLISHED_NAME:
+
+ src = parse_string (inst, vc_head, Program, &found);
+ Program->Position = parse_position (inst);
+
+ /* If the name has never been added to our symbol table, we're hosed */
+ if (!found) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "3: Undefined variable");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "3: Undefined variable: %s",
+ src->name);
+ return 1;
+ }
+
+ switch (src->type) {
+ case vt_attrib:
+ *File = PROGRAM_INPUT;
+ *Index = src->attrib_binding_idx;
+ break;
+
+ /* XXX: We have to handle offsets someplace in here! -- or are those above? */
+ case vt_param:
+ *File = src->param_binding_type;
+ *Index = src->param_binding_begin;
+ break;
+
+ case vt_temp:
+ *File = PROGRAM_TEMPORARY;
+ *Index = src->temp_binding;
+ break;
+
+ /* If the var type is vt_output no go */
+ default:
+ _mesa_set_program_error (ctx, Program->Position,
+ "destination register is read only");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "destination register is read only: %s",
+ src->name);
+ return 1;
+ }
+ break;
+
+ default:
+ _mesa_set_program_error (ctx, Program->Position,
+ "Unknown token in parse_src_reg");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Unknown token in parse_src_reg");
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ */
+static GLuint
+parse_vector_src_reg (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head, struct arb_program *Program,
+ GLint * File, GLint * Index, GLboolean * Negate,
+ GLubyte * Swizzle, GLboolean *IsRelOffset)
+{
+ /* Grab the sign */
+ *Negate = parse_sign (inst);
+
+ /* And the src reg */
+ if (parse_src_reg (ctx, inst, vc_head, Program, File, Index, IsRelOffset))
+ return 1;
+
+ /* finally, the swizzle */
+ parse_swizzle_mask (inst, Swizzle, 4);
+
+ return 0;
+}
+
+/**
+ */
+static GLuint
+parse_scalar_src_reg (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head, struct arb_program *Program,
+ GLint * File, GLint * Index, GLboolean * Negate,
+ GLubyte * Swizzle, GLboolean *IsRelOffset)
+{
+ /* Grab the sign */
+ *Negate = parse_sign (inst);
+
+ /* And the src reg */
+ if (parse_src_reg (ctx, inst, vc_head, Program, File, Index, IsRelOffset))
+ return 1;
+
+ /* Now, get the component and shove it into all the swizzle slots */
+ parse_swizzle_mask (inst, Swizzle, 1);
+
+ return 0;
+}
+
+/**
+ * This is a big mother that handles getting opcodes into the instruction
+ * and handling the src & dst registers for fragment program instructions
+ */
+static GLuint
+parse_fp_instruction (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head, struct arb_program *Program,
+ struct fp_instruction *fp)
+{
+ GLint a, b;
+ GLubyte swz[4]; /* FP's swizzle mask is a GLubyte, while VP's is GLuint */
+ GLuint texcoord;
+ GLubyte instClass, type, code;
+ GLboolean rel;
+
+ /* No condition codes in ARB_fp */
+ fp->UpdateCondRegister = 0;
+
+ /* Record the position in the program string for debugging */
+ fp->StringPos = Program->Position;
+
+ /* OP_ALU_INST or OP_TEX_INST */
+ instClass = *(*inst)++;
+
+ /* OP_ALU_{VECTOR, SCALAR, BINSC, BIN, TRI, SWZ},
+ * OP_TEX_{SAMPLE, KIL}
+ */
+ type = *(*inst)++;
+
+ /* The actual opcode name */
+ code = *(*inst)++;
+
+ /* Increment the correct count */
+ switch (instClass) {
+ case OP_ALU_INST:
+ Program->NumAluInstructions++;
+ break;
+ case OP_TEX_INST:
+ Program->NumTexInstructions++;
+ break;
+ }
+
+ fp->Saturate = 0;
+ fp->Precision = FLOAT32;
+
+ fp->DstReg.CondMask = COND_TR;
+
+ switch (type) {
+ case OP_ALU_VECTOR:
+ switch (code) {
+ case OP_ABS_SAT:
+ fp->Saturate = 1;
+ case OP_ABS:
+ fp->Opcode = FP_OPCODE_ABS;
+ break;
+
+ case OP_FLR_SAT:
+ fp->Saturate = 1;
+ case OP_FLR:
+ fp->Opcode = FP_OPCODE_FLR;
+ break;
+
+ case OP_FRC_SAT:
+ fp->Saturate = 1;
+ case OP_FRC:
+ fp->Opcode = FP_OPCODE_FRC;
+ break;
+
+ case OP_LIT_SAT:
+ fp->Saturate = 1;
+ case OP_LIT:
+ fp->Opcode = FP_OPCODE_LIT;
+ break;
+
+ case OP_MOV_SAT:
+ fp->Saturate = 1;
+ case OP_MOV:
+ fp->Opcode = FP_OPCODE_MOV;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+
+ fp->SrcReg[0].Abs = GL_FALSE;
+ fp->SrcReg[0].NegateAbs = GL_FALSE;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[0].File,
+ &fp->SrcReg[0].Index, &fp->SrcReg[0].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[0].Swizzle[b] = swz[b];
+ break;
+
+ case OP_ALU_SCALAR:
+ switch (code) {
+ case OP_COS_SAT:
+ fp->Saturate = 1;
+ case OP_COS:
+ fp->Opcode = FP_OPCODE_COS;
+ break;
+
+ case OP_EX2_SAT:
+ fp->Saturate = 1;
+ case OP_EX2:
+ fp->Opcode = FP_OPCODE_EX2;
+ break;
+
+ case OP_LG2_SAT:
+ fp->Saturate = 1;
+ case OP_LG2:
+ fp->Opcode = FP_OPCODE_LG2;
+ break;
+
+ case OP_RCP_SAT:
+ fp->Saturate = 1;
+ case OP_RCP:
+ fp->Opcode = FP_OPCODE_RCP;
+ break;
+
+ case OP_RSQ_SAT:
+ fp->Saturate = 1;
+ case OP_RSQ:
+ fp->Opcode = FP_OPCODE_RSQ;
+ break;
+
+ case OP_SIN_SAT:
+ fp->Saturate = 1;
+ case OP_SIN:
+ fp->Opcode = FP_OPCODE_SIN;
+ break;
+
+ case OP_SCS_SAT:
+ fp->Saturate = 1;
+ case OP_SCS:
+
+ fp->Opcode = FP_OPCODE_SCS;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+ fp->SrcReg[0].Abs = GL_FALSE;
+ fp->SrcReg[0].NegateAbs = GL_FALSE;
+ if (parse_scalar_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[0].File,
+ &fp->SrcReg[0].Index, &fp->SrcReg[0].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[0].Swizzle[b] = swz[b];
+ break;
+
+ case OP_ALU_BINSC:
+ switch (code) {
+ case OP_POW_SAT:
+ fp->Saturate = 1;
+ case OP_POW:
+ fp->Opcode = FP_OPCODE_POW;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 2; a++) {
+ fp->SrcReg[a].Abs = GL_FALSE;
+ fp->SrcReg[a].NegateAbs = GL_FALSE;
+ if (parse_scalar_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[a].File,
+ &fp->SrcReg[a].Index, &fp->SrcReg[a].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[a].Swizzle[b] = swz[b];
+ }
+ break;
+
+
+ case OP_ALU_BIN:
+ switch (code) {
+ case OP_ADD_SAT:
+ fp->Saturate = 1;
+ case OP_ADD:
+ fp->Opcode = FP_OPCODE_ADD;
+ break;
+
+ case OP_DP3_SAT:
+ fp->Saturate = 1;
+ case OP_DP3:
+ fp->Opcode = FP_OPCODE_DP3;
+ break;
+
+ case OP_DP4_SAT:
+ fp->Saturate = 1;
+ case OP_DP4:
+ fp->Opcode = FP_OPCODE_DP4;
+ break;
+
+ case OP_DPH_SAT:
+ fp->Saturate = 1;
+ case OP_DPH:
+ fp->Opcode = FP_OPCODE_DPH;
+ break;
+
+ case OP_DST_SAT:
+ fp->Saturate = 1;
+ case OP_DST:
+ fp->Opcode = FP_OPCODE_DST;
+ break;
+
+ case OP_MAX_SAT:
+ fp->Saturate = 1;
+ case OP_MAX:
+ fp->Opcode = FP_OPCODE_MAX;
+ break;
+
+ case OP_MIN_SAT:
+ fp->Saturate = 1;
+ case OP_MIN:
+ fp->Opcode = FP_OPCODE_MIN;
+ break;
+
+ case OP_MUL_SAT:
+ fp->Saturate = 1;
+ case OP_MUL:
+ fp->Opcode = FP_OPCODE_MUL;
+ break;
+
+ case OP_SGE_SAT:
+ fp->Saturate = 1;
+ case OP_SGE:
+ fp->Opcode = FP_OPCODE_SGE;
+ break;
+
+ case OP_SLT_SAT:
+ fp->Saturate = 1;
+ case OP_SLT:
+ fp->Opcode = FP_OPCODE_SLT;
+ break;
+
+ case OP_SUB_SAT:
+ fp->Saturate = 1;
+ case OP_SUB:
+ fp->Opcode = FP_OPCODE_SUB;
+ break;
+
+ case OP_XPD_SAT:
+ fp->Saturate = 1;
+ case OP_XPD:
+ fp->Opcode = FP_OPCODE_X2D;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 2; a++) {
+ fp->SrcReg[a].Abs = GL_FALSE;
+ fp->SrcReg[a].NegateAbs = GL_FALSE;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[a].File,
+ &fp->SrcReg[a].Index, &fp->SrcReg[a].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[a].Swizzle[b] = swz[b];
+ }
+ break;
+
+ case OP_ALU_TRI:
+ switch (code) {
+ case OP_CMP_SAT:
+ fp->Saturate = 1;
+ case OP_CMP:
+ fp->Opcode = FP_OPCODE_CMP;
+ break;
+
+ case OP_LRP_SAT:
+ fp->Saturate = 1;
+ case OP_LRP:
+ fp->Opcode = FP_OPCODE_LRP;
+ break;
+
+ case OP_MAD_SAT:
+ fp->Saturate = 1;
+ case OP_MAD:
+ fp->Opcode = FP_OPCODE_MAD;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 3; a++) {
+ fp->SrcReg[a].Abs = GL_FALSE;
+ fp->SrcReg[a].NegateAbs = GL_FALSE;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[a].File,
+ &fp->SrcReg[a].Index, &fp->SrcReg[a].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[a].Swizzle[b] = swz[b];
+ }
+ break;
+
+ case OP_ALU_SWZ:
+ switch (code) {
+ case OP_SWZ_SAT:
+ fp->Saturate = 1;
+ case OP_SWZ:
+ fp->Opcode = FP_OPCODE_SWZ;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+
+ if (parse_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[0].File,
+ &fp->SrcReg[0].Index, &rel))
+ return 1;
+ parse_extended_swizzle_mask (inst, swz,
+ &fp->SrcReg[0].NegateBase);
+ for (b=0; b<4; b++)
+ fp->SrcReg[0].Swizzle[b] = swz[b];
+ break;
+
+ case OP_TEX_SAMPLE:
+ switch (code) {
+ case OP_TEX_SAT:
+ fp->Saturate = 1;
+ case OP_TEX:
+ fp->Opcode = FP_OPCODE_TEX;
+ break;
+
+ case OP_TXP_SAT:
+ fp->Saturate = 1;
+ case OP_TXP:
+ fp->Opcode = FP_OPCODE_TXP;
+ break;
+
+ case OP_TXB_SAT:
+
+ fp->Saturate = 1;
+ case OP_TXB:
+ fp->Opcode = FP_OPCODE_TXB;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->DstReg.File,
+ &fp->DstReg.Index, fp->DstReg.WriteMask))
+ return 1;
+ fp->SrcReg[0].Abs = GL_FALSE;
+ fp->SrcReg[0].NegateAbs = GL_FALSE;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[0].File,
+ &fp->SrcReg[0].Index, &fp->SrcReg[0].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[0].Swizzle[b] = swz[b];
+
+ /* texImageUnit */
+ if (parse_texcoord_num (ctx, inst, Program, &texcoord))
+ return 1;
+ fp->TexSrcUnit = texcoord;
+
+ /* texTarget */
+ switch (*(*inst)++) {
+ case TEXTARGET_1D:
+ fp->TexSrcBit = TEXTURE_1D_BIT;
+ break;
+ case TEXTARGET_2D:
+ fp->TexSrcBit = TEXTURE_2D_BIT;
+ break;
+ case TEXTARGET_3D:
+ fp->TexSrcBit = TEXTURE_3D_BIT;
+ break;
+ case TEXTARGET_RECT:
+ fp->TexSrcBit = TEXTURE_RECT_BIT;
+ break;
+ case TEXTARGET_CUBE:
+ fp->TexSrcBit = TEXTURE_CUBE_BIT;
+ break;
+ case TEXTARGET_SHADOW1D:
+ case TEXTARGET_SHADOW2D:
+ case TEXTARGET_SHADOWRECT:
+ /* TODO ARB_fragment_program_shadow code */
+ break;
+ }
+ Program->TexturesUsed[texcoord] |= fp->TexSrcBit;
+ break;
+
+ case OP_TEX_KIL:
+ fp->Opcode = FP_OPCODE_KIL;
+ fp->SrcReg[0].Abs = GL_FALSE;
+ fp->SrcReg[0].NegateAbs = GL_FALSE;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & fp->SrcReg[0].File,
+ &fp->SrcReg[0].Index, &fp->SrcReg[0].NegateBase,
+ swz, &rel))
+ return 1;
+ for (b=0; b<4; b++)
+ fp->SrcReg[0].Swizzle[b] = swz[b];
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * This is a big mother that handles getting opcodes into the instruction
+ * and handling the src & dst registers for vertex program instructions
+ */
+static GLuint
+parse_vp_instruction (GLcontext * ctx, GLubyte ** inst,
+ struct var_cache **vc_head, struct arb_program *Program,
+ struct vp_instruction *vp)
+{
+ GLint a;
+ GLubyte type, code;
+
+ /* OP_ALU_{ARL, VECTOR, SCALAR, BINSC, BIN, TRI, SWZ} */
+ type = *(*inst)++;
+
+ /* The actual opcode name */
+ code = *(*inst)++;
+
+ /* Record the position in the program string for debugging */
+ vp->StringPos = Program->Position;
+
+ vp->SrcReg[0].RelAddr = vp->SrcReg[1].RelAddr = vp->SrcReg[2].RelAddr = 0;
+
+ for (a = 0; a < 4; a++) {
+ vp->SrcReg[0].Swizzle[a] = a;
+ vp->SrcReg[1].Swizzle[a] = a;
+ vp->SrcReg[2].Swizzle[a] = a;
+ vp->DstReg.WriteMask[a] = 1;
+ }
+
+ switch (type) {
+ /* XXX: */
+ case OP_ALU_ARL:
+ vp->Opcode = VP_OPCODE_ARL;
+
+ /* Remember to set SrcReg.RelAddr; */
+
+ /* Get the masked address register [dst] */
+ if (parse_masked_address_reg
+ (ctx, inst, vc_head, Program, &vp->DstReg.Index,
+ vp->DstReg.WriteMask))
+ return 1;
+ vp->DstReg.File = PROGRAM_ADDRESS;
+
+ /* Get a scalar src register */
+ if (parse_scalar_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[0].File,
+ &vp->SrcReg[0].Index, &vp->SrcReg[0].Negate,
+ vp->SrcReg[0].Swizzle, &vp->SrcReg[0].RelAddr))
+ return 1;
+
+ break;
+
+ case OP_ALU_VECTOR:
+ switch (code) {
+ case OP_ABS:
+ vp->Opcode = VP_OPCODE_ABS;
+ break;
+ case OP_FLR:
+ vp->Opcode = VP_OPCODE_FLR;
+ break;
+ case OP_FRC:
+ vp->Opcode = VP_OPCODE_FRC;
+ break;
+ case OP_LIT:
+ vp->Opcode = VP_OPCODE_LIT;
+ break;
+ case OP_MOV:
+ vp->Opcode = VP_OPCODE_MOV;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[0].File,
+ &vp->SrcReg[0].Index, &vp->SrcReg[0].Negate,
+ vp->SrcReg[0].Swizzle, &vp->SrcReg[0].RelAddr))
+ return 1;
+ break;
+
+ case OP_ALU_SCALAR:
+ switch (code) {
+ case OP_EX2:
+ vp->Opcode = VP_OPCODE_EX2;
+ break;
+ case OP_EXP:
+ vp->Opcode = VP_OPCODE_EXP;
+ break;
+ case OP_LG2:
+ vp->Opcode = VP_OPCODE_LG2;
+ break;
+ case OP_LOG:
+ vp->Opcode = VP_OPCODE_LOG;
+ break;
+ case OP_RCP:
+ vp->Opcode = VP_OPCODE_RCP;
+ break;
+ case OP_RSQ:
+ vp->Opcode = VP_OPCODE_RSQ;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+ if (parse_scalar_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[0].File,
+ &vp->SrcReg[0].Index, &vp->SrcReg[0].Negate,
+ vp->SrcReg[0].Swizzle, &vp->SrcReg[0].RelAddr))
+ return 1;
+ break;
+
+ case OP_ALU_BINSC:
+ switch (code) {
+ case OP_POW:
+ vp->Opcode = VP_OPCODE_POW;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 2; a++) {
+ if (parse_scalar_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[a].File,
+ &vp->SrcReg[a].Index, &vp->SrcReg[a].Negate,
+ vp->SrcReg[a].Swizzle, &vp->SrcReg[a].RelAddr))
+ return 1;
+ }
+ break;
+
+ case OP_ALU_BIN:
+ switch (code) {
+ case OP_ADD:
+ vp->Opcode = VP_OPCODE_ADD;
+ break;
+ case OP_DP3:
+ vp->Opcode = VP_OPCODE_DP3;
+ break;
+ case OP_DP4:
+ vp->Opcode = VP_OPCODE_DP4;
+ break;
+ case OP_DPH:
+ vp->Opcode = VP_OPCODE_DPH;
+ break;
+ case OP_DST:
+ vp->Opcode = VP_OPCODE_DST;
+ break;
+ case OP_MAX:
+ vp->Opcode = VP_OPCODE_MAX;
+ break;
+ case OP_MIN:
+ vp->Opcode = VP_OPCODE_MIN;
+ break;
+ case OP_MUL:
+ vp->Opcode = VP_OPCODE_MUL;
+ break;
+ case OP_SGE:
+ vp->Opcode = VP_OPCODE_SGE;
+ break;
+ case OP_SLT:
+ vp->Opcode = VP_OPCODE_SLT;
+ break;
+ case OP_SUB:
+ vp->Opcode = VP_OPCODE_SUB;
+ break;
+ case OP_XPD:
+ vp->Opcode = VP_OPCODE_XPD;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 2; a++) {
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[a].File,
+ &vp->SrcReg[a].Index, &vp->SrcReg[a].Negate,
+ vp->SrcReg[a].Swizzle, &vp->SrcReg[a].RelAddr))
+ return 1;
+ }
+ break;
+
+ case OP_ALU_TRI:
+ switch (code) {
+ case OP_MAD:
+ vp->Opcode = VP_OPCODE_MAD;
+ break;
+ }
+
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+ for (a = 0; a < 3; a++) {
+ if (parse_vector_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[a].File,
+ &vp->SrcReg[a].Index, &vp->SrcReg[a].Negate,
+ vp->SrcReg[a].Swizzle, &vp->SrcReg[a].RelAddr))
+ return 1;
+ }
+ break;
+
+ case OP_ALU_SWZ:
+ switch (code) {
+ case OP_SWZ:
+ vp->Opcode = VP_OPCODE_SWZ;
+ break;
+ }
+ if (parse_masked_dst_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->DstReg.File,
+ &vp->DstReg.Index, vp->DstReg.WriteMask))
+ return 1;
+
+ if (parse_src_reg
+ (ctx, inst, vc_head, Program, (GLint *) & vp->SrcReg[0].File,
+ &vp->SrcReg[0].Index, &vp->SrcReg[0].RelAddr))
+ return 1;
+ parse_extended_swizzle_mask (inst, vp->SrcReg[0].Swizzle,
+ &vp->SrcReg[0].Negate);
+ break;
+ }
+ return 0;
+}
+
+#if DEBUG_PARSING
+
+static GLvoid
+print_state_token (GLint token)
+{
+ switch (token) {
+ case STATE_MATERIAL:
+ fprintf (stderr, "STATE_MATERIAL ");
+ break;
+ case STATE_LIGHT:
+ fprintf (stderr, "STATE_LIGHT ");
+ break;
+
+ case STATE_LIGHTMODEL_AMBIENT:
+ fprintf (stderr, "STATE_AMBIENT ");
+ break;
+
+ case STATE_LIGHTMODEL_SCENECOLOR:
+ fprintf (stderr, "STATE_SCENECOLOR ");
+ break;
+
+ case STATE_LIGHTPROD:
+ fprintf (stderr, "STATE_LIGHTPROD ");
+ break;
+
+ case STATE_TEXGEN:
+ fprintf (stderr, "STATE_TEXGEN ");
+ break;
+
+ case STATE_FOG_COLOR:
+ fprintf (stderr, "STATE_FOG_COLOR ");
+ break;
+
+ case STATE_FOG_PARAMS:
+ fprintf (stderr, "STATE_FOG_PARAMS ");
+ break;
+
+ case STATE_CLIPPLANE:
+ fprintf (stderr, "STATE_CLIPPLANE ");
+ break;
+
+ case STATE_POINT_SIZE:
+ fprintf (stderr, "STATE_POINT_SIZE ");
+ break;
+
+ case STATE_POINT_ATTENUATION:
+ fprintf (stderr, "STATE_ATTENUATION ");
+ break;
+
+ case STATE_MATRIX:
+ fprintf (stderr, "STATE_MATRIX ");
+ break;
+
+ case STATE_MODELVIEW:
+ fprintf (stderr, "STATE_MODELVIEW ");
+ break;
+
+ case STATE_PROJECTION:
+ fprintf (stderr, "STATE_PROJECTION ");
+ break;
+
+ case STATE_MVP:
+ fprintf (stderr, "STATE_MVP ");
+ break;
+
+ case STATE_TEXTURE:
+ fprintf (stderr, "STATE_TEXTURE ");
+ break;
+
+ case STATE_PROGRAM:
+ fprintf (stderr, "STATE_PROGRAM ");
+ break;
+
+ case STATE_MATRIX_INVERSE:
+ fprintf (stderr, "STATE_INVERSE ");
+ break;
+
+ case STATE_MATRIX_TRANSPOSE:
+ fprintf (stderr, "STATE_TRANSPOSE ");
+ break;
+
+ case STATE_MATRIX_INVTRANS:
+ fprintf (stderr, "STATE_INVTRANS ");
+ break;
+
+ case STATE_AMBIENT:
+ fprintf (stderr, "STATE_AMBIENT ");
+ break;
+
+ case STATE_DIFFUSE:
+ fprintf (stderr, "STATE_DIFFUSE ");
+ break;
+
+ case STATE_SPECULAR:
+ fprintf (stderr, "STATE_SPECULAR ");
+ break;
+
+ case STATE_EMISSION:
+ fprintf (stderr, "STATE_EMISSION ");
+ break;
+
+ case STATE_SHININESS:
+ fprintf (stderr, "STATE_SHININESS ");
+ break;
+
+ case STATE_HALF:
+ fprintf (stderr, "STATE_HALF ");
+ break;
+
+ case STATE_POSITION:
+ fprintf (stderr, "STATE_POSITION ");
+ break;
+
+ case STATE_ATTENUATION:
+ fprintf (stderr, "STATE_ATTENUATION ");
+ break;
+
+ case STATE_SPOT_DIRECTION:
+ fprintf (stderr, "STATE_DIRECTION ");
+ break;
+
+ case STATE_TEXGEN_EYE_S:
+ fprintf (stderr, "STATE_TEXGEN_EYE_S ");
+ break;
+
+ case STATE_TEXGEN_EYE_T:
+ fprintf (stderr, "STATE_TEXGEN_EYE_T ");
+ break;
+
+ case STATE_TEXGEN_EYE_R:
+ fprintf (stderr, "STATE_TEXGEN_EYE_R ");
+ break;
+
+ case STATE_TEXGEN_EYE_Q:
+ fprintf (stderr, "STATE_TEXGEN_EYE_Q ");
+ break;
+
+ case STATE_TEXGEN_OBJECT_S:
+ fprintf (stderr, "STATE_TEXGEN_EYE_S ");
+ break;
+
+ case STATE_TEXGEN_OBJECT_T:
+ fprintf (stderr, "STATE_TEXGEN_OBJECT_T ");
+ break;
+
+ case STATE_TEXGEN_OBJECT_R:
+ fprintf (stderr, "STATE_TEXGEN_OBJECT_R ");
+ break;
+
+ case STATE_TEXGEN_OBJECT_Q:
+ fprintf (stderr, "STATE_TEXGEN_OBJECT_Q ");
+ break;
+
+ case STATE_TEXENV_COLOR:
+ fprintf (stderr, "STATE_TEXENV_COLOR ");
+ break;
+
+ case STATE_DEPTH_RANGE:
+ fprintf (stderr, "STATE_DEPTH_RANGE ");
+ break;
+
+ case STATE_VERTEX_PROGRAM:
+ fprintf (stderr, "STATE_VERTEX_PROGRAM ");
+ break;
+
+ case STATE_FRAGMENT_PROGRAM:
+ fprintf (stderr, "STATE_FRAGMENT_PROGRAM ");
+ break;
+
+ case STATE_ENV:
+ fprintf (stderr, "STATE_ENV ");
+ break;
+
+ case STATE_LOCAL:
+ fprintf (stderr, "STATE_LOCAL ");
+ break;
+
+ }
+ fprintf (stderr, "[%d] ", token);
+}
+
+
+static GLvoid
+debug_variables (GLcontext * ctx, struct var_cache *vc_head,
+ struct arb_program *Program)
+{
+ struct var_cache *vc;
+ GLint a, b;
+
+ fprintf (stderr, "debug_variables, vc_head: %x\n", vc_head);
+
+ /* First of all, print out the contents of the var_cache */
+ vc = vc_head;
+ while (vc) {
+ fprintf (stderr, "[%x]\n", vc);
+ switch (vc->type) {
+ case vt_none:
+ fprintf (stderr, "UNDEFINED %s\n", vc->name);
+ break;
+ case vt_attrib:
+ fprintf (stderr, "ATTRIB %s\n", vc->name);
+ fprintf (stderr, " binding: 0x%x\n", vc->attrib_binding);
+ break;
+ case vt_param:
+ fprintf (stderr, "PARAM %s begin: %d len: %d\n", vc->name,
+ vc->param_binding_begin, vc->param_binding_length);
+ b = vc->param_binding_begin;
+ for (a = 0; a < vc->param_binding_length; a++) {
+ fprintf (stderr, "%s\n",
+ Program->Parameters->Parameters[a + b].Name);
+ if (Program->Parameters->Parameters[a + b].Type == STATE) {
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[0]);
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[1]);
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[2]);
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[3]);
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[4]);
+ print_state_token (Program->Parameters->Parameters[a + b].
+ StateIndexes[5]);
+ }
+ else
+ fprintf (stderr, "%f %f %f %f\n",
+ Program->Parameters->Parameters[a + b].Values[0],
+ Program->Parameters->Parameters[a + b].Values[1],
+ Program->Parameters->Parameters[a + b].Values[2],
+ Program->Parameters->Parameters[a + b].Values[3]);
+ }
+ break;
+ case vt_temp:
+ fprintf (stderr, "TEMP %s\n", vc->name);
+ fprintf (stderr, " binding: 0x%x\n", vc->temp_binding);
+ break;
+ case vt_output:
+ fprintf (stderr, "OUTPUT %s\n", vc->name);
+ fprintf (stderr, " binding: 0x%x\n", vc->output_binding);
+ break;
+ case vt_alias:
+ fprintf (stderr, "ALIAS %s\n", vc->name);
+ fprintf (stderr, " binding: 0x%x (%s)\n",
+ vc->alias_binding, vc->alias_binding->name);
+ break;
+ }
+ vc = vc->next;
+ }
+}
+
+#endif
+
+
+/**
+ * The main loop for parsing a fragment or vertex program
+ *
+ * \return 0 on sucess, 1 on error
+ */
+static GLint
+parse_arb_program (GLcontext * ctx, GLubyte * inst, struct var_cache **vc_head,
+ struct arb_program *Program)
+{
+ GLint err = 0;
+
+ Program->MajorVersion = (GLuint) * inst++;
+ Program->MinorVersion = (GLuint) * inst++;
+
+ while (*inst != END) {
+ switch (*inst++) {
+
+ case OPTION:
+ switch (*inst++) {
+ case ARB_PRECISION_HINT_FASTEST:
+ Program->PrecisionOption = GL_FASTEST;
+ break;
+
+ case ARB_PRECISION_HINT_NICEST:
+ Program->PrecisionOption = GL_NICEST;
+ break;
+
+ case ARB_FOG_EXP:
+ Program->FogOption = GL_EXP;
+ break;
+
+ case ARB_FOG_EXP2:
+ Program->FogOption = GL_EXP2;
+ break;
+
+ case ARB_FOG_LINEAR:
+ Program->FogOption = GL_LINEAR;
+ break;
+
+ case ARB_POSITION_INVARIANT:
+ if (Program->Base.Target == GL_VERTEX_PROGRAM_ARB)
+ Program->HintPositionInvariant = 1;
+ break;
+
+ case ARB_FRAGMENT_PROGRAM_SHADOW:
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ /* TODO ARB_fragment_program_shadow code */
+ }
+ break;
+ }
+ break;
+
+ case INSTRUCTION:
+ Program->Position = parse_position (&inst);
+
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+
+ /* Check the instruction count
+ * XXX: Does END count as an instruction?
+ */
+ if (Program->Base.NumInstructions+1 == MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Max instruction count exceeded!");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Max instruction count exceeded!");
+ }
+
+ /* Realloc Program->FPInstructions */
+ Program->FPInstructions =
+ (struct fp_instruction *) _mesa_realloc (Program->FPInstructions,
+ Program->Base.NumInstructions*sizeof(struct fp_instruction),
+ (Program->Base.NumInstructions+1)*sizeof (struct fp_instruction));
+
+ /* parse the current instruction */
+ err = parse_fp_instruction (ctx, &inst, vc_head, Program,
+ &Program->FPInstructions[Program->Base.NumInstructions]);
+
+ }
+ else {
+ /* Check the instruction count
+ * XXX: Does END count as an instruction?
+ */
+ if (Program->Base.NumInstructions+1 == MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS) {
+ _mesa_set_program_error (ctx, Program->Position,
+ "Max instruction count exceeded!");
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Max instruction count exceeded!");
+ }
+
+ /* Realloc Program->VPInstructions */
+ Program->VPInstructions =
+ (struct vp_instruction *) _mesa_realloc (Program->VPInstructions,
+ Program->Base.NumInstructions*sizeof(struct vp_instruction),
+ (Program->Base.NumInstructions +1)*sizeof(struct vp_instruction));
+
+ /* parse the current instruction */
+ err = parse_vp_instruction (ctx, &inst, vc_head, Program,
+ &Program->VPInstructions[Program->Base.NumInstructions]);
+ }
+
+ /* increment Program->Base.NumInstructions */
+ Program->Base.NumInstructions++;
+ break;
+
+ case DECLARATION:
+ err = parse_declaration (ctx, &inst, vc_head, Program);
+ break;
+
+ default:
+ break;
+ }
+
+ if (err)
+ break;
+ }
+
+ /* Finally, tag on an OPCODE_END instruction */
+ if (Program->Base.Target == GL_FRAGMENT_PROGRAM_ARB) {
+ Program->FPInstructions =
+ (struct fp_instruction *) _mesa_realloc (Program->FPInstructions,
+ Program->Base.NumInstructions*sizeof(struct fp_instruction),
+ (Program->Base.NumInstructions+1)*sizeof(struct fp_instruction));
+
+ Program->FPInstructions[Program->Base.NumInstructions].Opcode = FP_OPCODE_END;
+ /* YYY Wrong Position in program, whatever, at least not random -> crash
+ Program->Position = parse_position (&inst);
+ */
+ Program->FPInstructions[Program->Base.NumInstructions].StringPos = Program->Position;
+ }
+ else {
+ Program->VPInstructions =
+ (struct vp_instruction *) _mesa_realloc (Program->VPInstructions,
+ Program->Base.NumInstructions*sizeof(struct vp_instruction),
+ (Program->Base.NumInstructions+1)*sizeof(struct vp_instruction));
+
+ Program->VPInstructions[Program->Base.NumInstructions].Opcode = VP_OPCODE_END;
+ /* YYY Wrong Position in program, whatever, at least not random -> crash
+ Program->Position = parse_position (&inst);
+ */
+ Program->VPInstructions[Program->Base.NumInstructions].StringPos = Program->Position;
+ }
+
+ /* increment Program->Base.NumInstructions */
+ Program->Base.NumInstructions++;
+
+ return err;
+}
+
+/* XXX temporary */
+static char core_grammar_text[] =
+#include "grammar_syn.h"
+;
+
+static int set_reg8 (GLcontext *ctx, grammar id, const byte *name, byte value)
+{
+ char error_msg;
+ GLint error_pos;
+
+ if (grammar_set_reg8 (id, name, value))
+ return 0;
+
+ grammar_get_last_error ((byte *) error_msg, 300, &error_pos);
+ _mesa_set_program_error (ctx, error_pos, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Grammar Register Error");
+ return 1;
+}
+
+/*
+ Taken from SGI sample code
+*/
+static int extension_is_supported (const byte *ext)
+{
+ const byte *extensions = glGetString (GL_EXTENSIONS);
+ const byte *end = extensions + _mesa_strlen ((const char *) extensions);
+ const int ext_len = _mesa_strlen ((const char *) ext);
+
+ while (extensions < end) {
+ const int n = _mesa_strcspn ((const char *) extensions, " ");
+ if ((ext_len == n) && (_mesa_strncmp ((const char *) ext,
+ (const char *) extensions, n) == 0))
+ return 1;
+ extensions += (n + 1);
+ }
+
+ return 0;
+}
+
+static int enable_ext (GLcontext *ctx, grammar id, const byte *name, const byte *extname)
+{
+ if (extension_is_supported (extname)) {
+ if (set_reg8 (ctx, id, name, 0x01))
+ return 1;
+ return 0;
+}
+
+/**
+ * This kicks everything off.
+ *
+ * \param ctx - The GL Context
+ * \param str - The program string
+ * \param len - The program string length
+ * \param Program - The arb_program struct to return all the parsed info in
+ * \return 0 on sucess, 1 on error
+ */
+GLuint
+_mesa_parse_arb_program (GLcontext * ctx, const GLubyte * str, GLsizei len,
+ struct arb_program * program)
+{
+ GLint a, err, error_pos;
+ char error_msg[300];
+ GLuint parsed_len;
+ struct var_cache *vc_head;
+ grammar arbprogram_syn_id;
+ GLubyte *parsed, *inst;
+ GLubyte *strz = NULL;
+ static int arbprogram_syn_is_ok = 0; /* XXX temporary */
+
+#if DEBUG_PARSING
+ fprintf (stderr, "Loading grammar text!\n");
+#endif
+
+ /* check if the arb_grammar_text (arbprogram.syn) is syntactically correct */
+ if (!arbprogram_syn_is_ok) {
+ grammar grammar_syn_id;
+ GLint err;
+ GLuint parsed_len;
+ byte *parsed;
+
+ grammar_syn_id = grammar_load_from_text ((byte *) core_grammar_text);
+ if (grammar_syn_id == 0) {
+ grammar_get_last_error ((byte *) error_msg, 300, &error_pos);
+ _mesa_set_program_error (ctx, error_pos, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Error loading grammar rule set");
+ return 1;
+ }
+
+ err = grammar_check (grammar_syn_id, (byte *) arb_grammar_text, &parsed, &parsed_len);
+
+ /* NOTE: we cant destroy grammar_syn_id right here because grammar_destroy() can
+ reset the last error
+ */
+
+ if (err == 0) {
+ grammar_get_last_error ((byte *) error_msg, 300, &error_pos);
+ _mesa_set_program_error (ctx, error_pos, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Error loading grammar rule set");
+
+ grammar_destroy (grammar_syn_id);
+ return 1;
+ }
+
+ grammar_destroy (grammar_syn_id);
+
+ arbprogram_syn_is_ok = 1;
+ }
+
+ /* create the grammar object */
+ arbprogram_syn_id = grammar_load_from_text ((byte *) arb_grammar_text);
+ if (arbprogram_syn_id == 0) {
+ grammar_get_last_error ((GLubyte *) error_msg, 300, &error_pos);
+ _mesa_set_program_error (ctx, error_pos, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION,
+ "Error loading grammer rule set");
+ return 1;
+ }
+
+ /* Set program_target register value */
+ if (set_reg8 (ctx, arbprogram_syn_id, (byte *) "program_target",
+ program->Base.Target == GL_FRAGMENT_PROGRAM_ARB ? 0x10 : 0x20)) {
+ grammar_destroy (arbprogram_syn_id);
+ return 1;
+ }
+
+ /* Enable all active extensions */
+ if (enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "vertex_blend", (byte *) "GL_ARB_vertex_blend") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "vertex_blend", (byte *) "GL_EXT_vertex_weighting") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "matrix_palette", (byte *) "GL_ARB_matrix_palette") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "point_parameters", (byte *) "GL_ARB_point_parameters") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "point_parameters", (byte *) "GL_EXT_point_parameters") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "secondary_color", (byte *) "GL_EXT_secondary_color") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "fog_coord", (byte *) "GL_EXT_fog_coord") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "texture_rectangle", (byte *) "GL_EXT_texture_rectangle") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "texture_rectangle", (byte *) "GL_NV_texture_rectangle") ||
+ enable_ext (ctx, arbprogram_syn_id,
+ (byte *) "fragment_program_shadow", (byte *) "GL_ARB_fragment_program_shadow")) {
+ grammar_destroy (arbprogram_syn_id);
+ return 1;
+ }
+
+ /* check for NULL character occurences */
+ {
+ int i;
+ for (i = 0; i < len; i++)
+ if (str[i] == '\0') {
+ _mesa_set_program_error (ctx, i, "invalid character");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Lexical Error");
+
+ grammar_destroy (arbprogram_syn_id);
+ return 1;
+ }
+ }
+
+ /* copy the program string to a null-terminated string */
+ /* XXX should I check for NULL from malloc()? */
+ strz = _mesa_malloc (len + 1);
+ _mesa_memcpy (strz, str, len);
+ strz[len] = '\0';
+
+#if DEBUG_PARSING
+ printf ("Checking Grammar!\n");
+#endif
+ err = grammar_check (arbprogram_syn_id, strz, &parsed, &parsed_len);
+
+ _mesa_free (strz);
+ strz = NULL;
+
+ /* Syntax parse error */
+ if (err == 0) {
+ grammar_get_last_error ((GLubyte *) error_msg, 300, &error_pos);
+ _mesa_set_program_error (ctx, error_pos, error_msg);
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Parse Error");
+
+ grammar_destroy (arbprogram_syn_id);
+ return 1;
+ }
+
+#if DEBUG_PARSING
+ printf ("Destroying grammer dict [parse retval: %d]\n", err);
+#endif
+ grammar_destroy (arbprogram_syn_id);
+
+ /* Initialize the arb_program struct */
+ program->Base.NumInstructions =
+ program->Base.NumTemporaries =
+ program->Base.NumParameters =
+ program->Base.NumAttributes = program->Base.NumAddressRegs = 0;
+ program->Parameters = _mesa_new_parameter_list ();
+ program->InputsRead = 0;
+ program->OutputsWritten = 0;
+ program->Position = 0;
+ program->MajorVersion = program->MinorVersion = 0;
+ program->PrecisionOption = GL_DONT_CARE;
+ program->FogOption = GL_NONE;
+ program->HintPositionInvariant = GL_FALSE;
+ for (a = 0; a < MAX_TEXTURE_IMAGE_UNITS; a++)
+ program->TexturesUsed[a] = 0;
+ program->NumAluInstructions =
+ program->NumTexInstructions =
+ program->NumTexIndirections = 0;
+
+ program->FPInstructions = NULL;
+ program->VPInstructions = NULL;
+
+ vc_head = NULL;
+ err = 0;
+
+ /* Start examining the tokens in the array */
+ inst = parsed;
+
+ /* Check the grammer rev */
+ if (*inst++ != REVISION) {
+ _mesa_set_program_error (ctx, 0, "Grammar version mismatch");
+ _mesa_error (ctx, GL_INVALID_OPERATION, "Grammar verison mismatch");
+ err = 1;
+ }
+ else {
+ switch (*inst++) {
+ case FRAGMENT_PROGRAM:
+ program->Base.Target = GL_FRAGMENT_PROGRAM_ARB;
+ break;
+
+ case VERTEX_PROGRAM:
+ program->Base.Target = GL_VERTEX_PROGRAM_ARB;
+ break;
+ }
+
+ err = parse_arb_program (ctx, inst, &vc_head, program);
+#if DEBUG_PARSING
+ fprintf (stderr, "Symantic analysis returns %d [1 is bad!]\n", err);
+#endif
+ }
+
+ /*debug_variables(ctx, vc_head, program); */
+
+ /* We're done with the parsed binary array */
+ var_cache_destroy (&vc_head);
+
+ _mesa_free (parsed);
+#if DEBUG_PARSING
+ printf ("_mesa_parse_arb_program() done\n");
+#endif
+ return err;
+}
projects / platform / upstream / mesa.git / commitdiff