diff options
author | Brian Paul <brianp@vmware.com> | 2010-06-10 22:48:16 -0600 |
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committer | Brian Paul <brianp@vmware.com> | 2010-06-10 22:48:16 -0600 |
commit | f1c5043f94261fecd8a6e54fe37d786554affcdd (patch) | |
tree | 681dcd7ddafb3535629df2b3ccdaf693d1cfd5df /src/mesa/slang/slang_typeinfo.c | |
parent | 7936e06657bc43de80ae4f56ee9db956e193d880 (diff) | |
download | external_mesa3d-f1c5043f94261fecd8a6e54fe37d786554affcdd.zip external_mesa3d-f1c5043f94261fecd8a6e54fe37d786554affcdd.tar.gz external_mesa3d-f1c5043f94261fecd8a6e54fe37d786554affcdd.tar.bz2 |
mesa: move shader/slang/* sources to main/slang/*
Reduce the source tree depth a bit.
Diffstat (limited to 'src/mesa/slang/slang_typeinfo.c')
-rw-r--r-- | src/mesa/slang/slang_typeinfo.c | 1177 |
1 files changed, 1177 insertions, 0 deletions
diff --git a/src/mesa/slang/slang_typeinfo.c b/src/mesa/slang/slang_typeinfo.c new file mode 100644 index 0000000..0f96768 --- /dev/null +++ b/src/mesa/slang/slang_typeinfo.c @@ -0,0 +1,1177 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 2005-2006 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. + */ + +/** + * \file slang_typeinfo.c + * slang type info + * \author Michal Krol + */ + +#include "main/imports.h" +#include "shader/prog_instruction.h" +#include "slang_typeinfo.h" +#include "slang_compile.h" +#include "slang_log.h" +#include "slang_mem.h" + + +/** + * Checks if a field selector is a general swizzle (an r-value swizzle + * with replicated components or an l-value swizzle mask) for a + * vector. Returns GL_TRUE if this is the case, <swz> is filled with + * swizzle information. Returns GL_FALSE otherwise. + */ +GLboolean +_slang_is_swizzle(const char *field, GLuint rows, slang_swizzle * swz) +{ + GLuint i; + GLboolean xyzw = GL_FALSE, rgba = GL_FALSE, stpq = GL_FALSE; + + /* init to undefined. + * We rely on undefined/nil values to distinguish between + * regular swizzles and writemasks. + * For example, the swizzle ".xNNN" is the writemask ".x". + * That's different than the swizzle ".xxxx". + */ + for (i = 0; i < 4; i++) + swz->swizzle[i] = SWIZZLE_NIL; + + /* the swizzle can be at most 4-component long */ + swz->num_components = slang_string_length(field); + if (swz->num_components > 4) + return GL_FALSE; + + for (i = 0; i < swz->num_components; i++) { + /* mark which swizzle group is used */ + switch (field[i]) { + case 'x': + case 'y': + case 'z': + case 'w': + xyzw = GL_TRUE; + break; + case 'r': + case 'g': + case 'b': + case 'a': + rgba = GL_TRUE; + break; + case 's': + case 't': + case 'p': + case 'q': + stpq = GL_TRUE; + break; + default: + return GL_FALSE; + } + + /* collect swizzle component */ + switch (field[i]) { + case 'x': + case 'r': + case 's': + swz->swizzle[i] = 0; + break; + case 'y': + case 'g': + case 't': + swz->swizzle[i] = 1; + break; + case 'z': + case 'b': + case 'p': + swz->swizzle[i] = 2; + break; + case 'w': + case 'a': + case 'q': + swz->swizzle[i] = 3; + break; + } + + /* check if the component is valid for given vector's row count */ + if (rows <= swz->swizzle[i]) + return GL_FALSE; + } + + /* only one swizzle group can be used */ + if ((xyzw && rgba) || (xyzw && stpq) || (rgba && stpq)) + return GL_FALSE; + + return GL_TRUE; +} + + + +/** + * Checks if a general swizzle is an l-value swizzle - these swizzles + * do not have duplicated fields. Returns GL_TRUE if this is a + * swizzle mask. Returns GL_FALSE otherwise + */ +static GLboolean +_slang_is_swizzle_mask(const slang_swizzle * swz, GLuint rows) +{ + GLuint i, c = 0; + + /* the swizzle may not be longer than the vector dim */ + if (swz->num_components > rows) + return GL_FALSE; + + /* the swizzle components cannot be duplicated */ + for (i = 0; i < swz->num_components; i++) { + if ((c & (1 << swz->swizzle[i])) != 0) + return GL_FALSE; + c |= 1 << swz->swizzle[i]; + } + + return GL_TRUE; +} + + +/** + * Combines (multiplies) two swizzles to form single swizzle. + * Example: "vec.wzyx.yx" --> "vec.zw". + */ +static void +_slang_multiply_swizzles(slang_swizzle * dst, const slang_swizzle * left, + const slang_swizzle * right) +{ + GLuint i; + + dst->num_components = right->num_components; + for (i = 0; i < right->num_components; i++) + dst->swizzle[i] = left->swizzle[right->swizzle[i]]; +} + + +typedef struct +{ + const char *name; + slang_type_specifier_type type; +} type_specifier_type_name; + +static const type_specifier_type_name type_specifier_type_names[] = { + {"void", SLANG_SPEC_VOID}, + {"bool", SLANG_SPEC_BOOL}, + {"bvec2", SLANG_SPEC_BVEC2}, + {"bvec3", SLANG_SPEC_BVEC3}, + {"bvec4", SLANG_SPEC_BVEC4}, + {"int", SLANG_SPEC_INT}, + {"ivec2", SLANG_SPEC_IVEC2}, + {"ivec3", SLANG_SPEC_IVEC3}, + {"ivec4", SLANG_SPEC_IVEC4}, + {"float", SLANG_SPEC_FLOAT}, + {"vec2", SLANG_SPEC_VEC2}, + {"vec3", SLANG_SPEC_VEC3}, + {"vec4", SLANG_SPEC_VEC4}, + {"mat2", SLANG_SPEC_MAT2}, + {"mat3", SLANG_SPEC_MAT3}, + {"mat4", SLANG_SPEC_MAT4}, + {"mat2x3", SLANG_SPEC_MAT23}, + {"mat3x2", SLANG_SPEC_MAT32}, + {"mat2x4", SLANG_SPEC_MAT24}, + {"mat4x2", SLANG_SPEC_MAT42}, + {"mat3x4", SLANG_SPEC_MAT34}, + {"mat4x3", SLANG_SPEC_MAT43}, + {"sampler1D", SLANG_SPEC_SAMPLER_1D}, + {"sampler2D", SLANG_SPEC_SAMPLER_2D}, + {"sampler3D", SLANG_SPEC_SAMPLER_3D}, + {"samplerCube", SLANG_SPEC_SAMPLER_CUBE}, + {"sampler1DShadow", SLANG_SPEC_SAMPLER_1D_SHADOW}, + {"sampler2DShadow", SLANG_SPEC_SAMPLER_2D_SHADOW}, + {"sampler2DRect", SLANG_SPEC_SAMPLER_RECT}, + {"sampler2DRectShadow", SLANG_SPEC_SAMPLER_RECT_SHADOW}, + {"sampler1DArray", SLANG_SPEC_SAMPLER_1D_ARRAY}, + {"sampler2DArray", SLANG_SPEC_SAMPLER_2D_ARRAY}, + {"sampler1DArrayShadow", SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW}, + {"sampler2DArrayShadow", SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW}, + {NULL, SLANG_SPEC_VOID} +}; + +slang_type_specifier_type +slang_type_specifier_type_from_string(const char *name) +{ + const type_specifier_type_name *p = type_specifier_type_names; + while (p->name != NULL) { + if (slang_string_compare(p->name, name) == 0) + break; + p++; + } + return p->type; +} + +const char * +slang_type_specifier_type_to_string(slang_type_specifier_type type) +{ + const type_specifier_type_name *p = type_specifier_type_names; + while (p->name != NULL) { + if (p->type == type) + break; + p++; + } + return p->name; +} + +/* slang_fully_specified_type */ + +int +slang_fully_specified_type_construct(slang_fully_specified_type * type) +{ + type->qualifier = SLANG_QUAL_NONE; + slang_type_specifier_ctr(&type->specifier); + return 1; +} + +void +slang_fully_specified_type_destruct(slang_fully_specified_type * type) +{ + slang_type_specifier_dtr(&type->specifier); +} + +int +slang_fully_specified_type_copy(slang_fully_specified_type * x, + const slang_fully_specified_type * y) +{ + slang_fully_specified_type z; + + if (!slang_fully_specified_type_construct(&z)) + return 0; + z.qualifier = y->qualifier; + z.precision = y->precision; + z.variant = y->variant; + z.centroid = y->centroid; + z.layout = y->layout; + z.array_len = y->array_len; + if (!slang_type_specifier_copy(&z.specifier, &y->specifier)) { + slang_fully_specified_type_destruct(&z); + return 0; + } + slang_fully_specified_type_destruct(x); + *x = z; + return 1; +} + + +/** + * Test if two fully specified types are compatible. This is a bit + * looser than testing for equality. We don't check the precision, + * variant, centroid, etc. information. + * XXX this may need some tweaking. + */ +GLboolean +slang_fully_specified_types_compatible(const slang_fully_specified_type * x, + const slang_fully_specified_type * y) +{ + if (!slang_type_specifier_equal(&x->specifier, &y->specifier)) + return GL_FALSE; + + if (x->qualifier == SLANG_QUAL_FIXEDINPUT && + y->qualifier == SLANG_QUAL_VARYING) + ; /* ok */ + else if (x->qualifier != y->qualifier) + return GL_FALSE; + + /* Note: don't compare precision, variant, centroid */ + + /* XXX array length? */ + + return GL_TRUE; +} + + +GLvoid +slang_type_specifier_ctr(slang_type_specifier * self) +{ + self->type = SLANG_SPEC_VOID; + self->_struct = NULL; + self->_array = NULL; +} + +GLvoid +slang_type_specifier_dtr(slang_type_specifier * self) +{ + if (self->_struct != NULL) { + slang_struct_destruct(self->_struct); + _slang_free(self->_struct); + } + if (self->_array != NULL) { + slang_type_specifier_dtr(self->_array); + _slang_free(self->_array); + } +} + +slang_type_specifier * +slang_type_specifier_new(slang_type_specifier_type type, + struct slang_struct_ *_struct, + struct slang_type_specifier_ *_array) +{ + slang_type_specifier *spec = + (slang_type_specifier *) _slang_alloc(sizeof(slang_type_specifier)); + if (spec) { + spec->type = type; + spec->_struct = _struct; + spec->_array = _array; + } + return spec; +} + +GLboolean +slang_type_specifier_copy(slang_type_specifier * x, + const slang_type_specifier * y) +{ + slang_type_specifier z; + + slang_type_specifier_ctr(&z); + z.type = y->type; + if (z.type == SLANG_SPEC_STRUCT) { + z._struct = (slang_struct *) _slang_alloc(sizeof(slang_struct)); + if (z._struct == NULL) { + slang_type_specifier_dtr(&z); + return GL_FALSE; + } + if (!slang_struct_construct(z._struct)) { + _slang_free(z._struct); + slang_type_specifier_dtr(&z); + return GL_FALSE; + } + if (!slang_struct_copy(z._struct, y->_struct)) { + slang_type_specifier_dtr(&z); + return GL_FALSE; + } + } + else if (z.type == SLANG_SPEC_ARRAY) { + z._array = (slang_type_specifier *) + _slang_alloc(sizeof(slang_type_specifier)); + if (z._array == NULL) { + slang_type_specifier_dtr(&z); + return GL_FALSE; + } + slang_type_specifier_ctr(z._array); + if (!slang_type_specifier_copy(z._array, y->_array)) { + slang_type_specifier_dtr(&z); + return GL_FALSE; + } + } + slang_type_specifier_dtr(x); + *x = z; + return GL_TRUE; +} + + +/** + * Test if two types are equal. + */ +GLboolean +slang_type_specifier_equal(const slang_type_specifier * x, + const slang_type_specifier * y) +{ + if (x->type != y->type) + return GL_FALSE; + if (x->type == SLANG_SPEC_STRUCT) + return slang_struct_equal(x->_struct, y->_struct); + if (x->type == SLANG_SPEC_ARRAY) + return slang_type_specifier_equal(x->_array, y->_array); + return GL_TRUE; +} + + +/** + * As above, but allow float/int casting. + */ +GLboolean +slang_type_specifier_compatible(const slang_type_specifier * x, + const slang_type_specifier * y) +{ + /* special case: float == int */ + if (x->type == SLANG_SPEC_INT && y->type == SLANG_SPEC_FLOAT) { + return GL_TRUE; + } + /* XXX may need to add bool/int compatibility, etc */ + + if (x->type != y->type) + return GL_FALSE; + if (x->type == SLANG_SPEC_STRUCT) + return slang_struct_equal(x->_struct, y->_struct); + if (x->type == SLANG_SPEC_ARRAY) + return slang_type_specifier_compatible(x->_array, y->_array); + return GL_TRUE; +} + + +GLboolean +slang_typeinfo_construct(slang_typeinfo * ti) +{ + memset(ti, 0, sizeof(*ti)); + slang_type_specifier_ctr(&ti->spec); + ti->array_len = 0; + return GL_TRUE; +} + +GLvoid +slang_typeinfo_destruct(slang_typeinfo * ti) +{ + slang_type_specifier_dtr(&ti->spec); +} + + + +/** + * Determine the return type of a function. + * \param a_name the function name + * \param param function parameters (overloading) + * \param num_params number of parameters to function + * \param space namespace to search + * \param spec returns the type + * \param funFound returns pointer to the function, or NULL if not found. + * \return GL_TRUE for success, GL_FALSE if failure (bad function name) + */ +static GLboolean +_slang_typeof_function(slang_atom a_name, + slang_operation * params, GLuint num_params, + const slang_name_space * space, + slang_type_specifier * spec, + slang_function **funFound, + slang_atom_pool *atoms, slang_info_log *log) +{ + GLboolean error; + + *funFound = _slang_function_locate(space->funcs, a_name, params, + num_params, space, atoms, log, &error); + if (error) + return GL_FALSE; + + if (!*funFound) + return GL_TRUE; /* yes, not false */ + + return slang_type_specifier_copy(spec, &(*funFound)->header.type.specifier); +} + + +/** + * Determine the type of a math function. + * \param name name of the operator, one of +,-,*,/ or unary - + * \param params array of function parameters + * \param num_params number of parameters + * \param space namespace to use + * \param spec returns the function's type + * \param atoms atom pool + * \return GL_TRUE for success, GL_FALSE if failure + */ +static GLboolean +typeof_math_call(const char *name, slang_operation *call, + const slang_name_space * space, + slang_type_specifier * spec, + slang_atom_pool * atoms, + slang_info_log *log) +{ + if (call->fun) { + /* we've previously resolved this function call */ + slang_type_specifier_copy(spec, &call->fun->header.type.specifier); + return GL_TRUE; + } + else { + slang_atom atom; + slang_function *fun; + + /* number of params: */ + assert(call->num_children == 1 || call->num_children == 2); + + atom = slang_atom_pool_atom(atoms, name); + if (!_slang_typeof_function(atom, call->children, call->num_children, + space, spec, &fun, atoms, log)) + return GL_FALSE; + + if (fun) { + /* Save pointer to save time in future */ + call->fun = fun; + return GL_TRUE; + } + return GL_FALSE; + } +} + + +/** + * Determine the return type of an operation. + * \param op the operation node + * \param space the namespace to use + * \param ti the returned type + * \param atoms atom pool + * \return GL_TRUE for success, GL_FALSE if failure + */ +GLboolean +_slang_typeof_operation(slang_operation * op, + const slang_name_space * space, + slang_typeinfo * ti, + slang_atom_pool * atoms, + slang_info_log *log) +{ + ti->can_be_referenced = GL_FALSE; + ti->is_swizzled = GL_FALSE; + + switch (op->type) { + case SLANG_OPER_BLOCK_NO_NEW_SCOPE: + case SLANG_OPER_BLOCK_NEW_SCOPE: + case SLANG_OPER_ASM: + case SLANG_OPER_BREAK: + case SLANG_OPER_CONTINUE: + case SLANG_OPER_DISCARD: + case SLANG_OPER_RETURN: + case SLANG_OPER_IF: + case SLANG_OPER_WHILE: + case SLANG_OPER_DO: + case SLANG_OPER_FOR: + case SLANG_OPER_VOID: + ti->spec.type = SLANG_SPEC_VOID; + break; + case SLANG_OPER_EXPRESSION: + case SLANG_OPER_ASSIGN: + case SLANG_OPER_ADDASSIGN: + case SLANG_OPER_SUBASSIGN: + case SLANG_OPER_MULASSIGN: + case SLANG_OPER_DIVASSIGN: + case SLANG_OPER_PREINCREMENT: + case SLANG_OPER_PREDECREMENT: + if (!_slang_typeof_operation(op->children, space, ti, atoms, log)) + return GL_FALSE; + break; + case SLANG_OPER_LITERAL_BOOL: + if (op->literal_size == 1) + ti->spec.type = SLANG_SPEC_BOOL; + else if (op->literal_size == 2) + ti->spec.type = SLANG_SPEC_BVEC2; + else if (op->literal_size == 3) + ti->spec.type = SLANG_SPEC_BVEC3; + else if (op->literal_size == 4) + ti->spec.type = SLANG_SPEC_BVEC4; + else { + _mesa_problem(NULL, + "Unexpected bool literal_size %d in _slang_typeof_operation()", + op->literal_size); + ti->spec.type = SLANG_SPEC_BOOL; + } + break; + case SLANG_OPER_LOGICALOR: + case SLANG_OPER_LOGICALXOR: + case SLANG_OPER_LOGICALAND: + case SLANG_OPER_EQUAL: + case SLANG_OPER_NOTEQUAL: + case SLANG_OPER_LESS: + case SLANG_OPER_GREATER: + case SLANG_OPER_LESSEQUAL: + case SLANG_OPER_GREATEREQUAL: + case SLANG_OPER_NOT: + ti->spec.type = SLANG_SPEC_BOOL; + break; + case SLANG_OPER_LITERAL_INT: + if (op->literal_size == 1) + ti->spec.type = SLANG_SPEC_INT; + else if (op->literal_size == 2) + ti->spec.type = SLANG_SPEC_IVEC2; + else if (op->literal_size == 3) + ti->spec.type = SLANG_SPEC_IVEC3; + else if (op->literal_size == 4) + ti->spec.type = SLANG_SPEC_IVEC4; + else { + _mesa_problem(NULL, + "Unexpected int literal_size %d in _slang_typeof_operation()", + op->literal_size); + ti->spec.type = SLANG_SPEC_INT; + } + break; + case SLANG_OPER_LITERAL_FLOAT: + if (op->literal_size == 1) + ti->spec.type = SLANG_SPEC_FLOAT; + else if (op->literal_size == 2) + ti->spec.type = SLANG_SPEC_VEC2; + else if (op->literal_size == 3) + ti->spec.type = SLANG_SPEC_VEC3; + else if (op->literal_size == 4) + ti->spec.type = SLANG_SPEC_VEC4; + else { + _mesa_problem(NULL, + "Unexpected float literal_size %d in _slang_typeof_operation()", + op->literal_size); + ti->spec.type = SLANG_SPEC_FLOAT; + } + break; + case SLANG_OPER_IDENTIFIER: + case SLANG_OPER_VARIABLE_DECL: + { + slang_variable *var; + var = _slang_variable_locate(op->locals, op->a_id, GL_TRUE); + if (!var) { + slang_info_log_error(log, "undefined variable '%s'", + (char *) op->a_id); + return GL_FALSE; + } + if (!slang_type_specifier_copy(&ti->spec, &var->type.specifier)) { + slang_info_log_memory(log); + return GL_FALSE; + } + ti->can_be_referenced = GL_TRUE; + if (var->type.specifier.type == SLANG_SPEC_ARRAY && + var->type.array_len >= 1) { + /* the datatype is an array, ex: float[3] x; */ + ti->array_len = var->type.array_len; + } + else { + /* the variable is an array, ex: float x[3]; */ + ti->array_len = var->array_len; + } + } + break; + case SLANG_OPER_SEQUENCE: + /* TODO: check [0] and [1] if they match */ + if (!_slang_typeof_operation(&op->children[1], space, ti, atoms, log)) { + return GL_FALSE; + } + ti->can_be_referenced = GL_FALSE; + ti->is_swizzled = GL_FALSE; + break; + /*case SLANG_OPER_MODASSIGN: */ + /*case SLANG_OPER_LSHASSIGN: */ + /*case SLANG_OPER_RSHASSIGN: */ + /*case SLANG_OPER_ORASSIGN: */ + /*case SLANG_OPER_XORASSIGN: */ + /*case SLANG_OPER_ANDASSIGN: */ + case SLANG_OPER_SELECT: + /* TODO: check [1] and [2] if they match */ + if (!_slang_typeof_operation(&op->children[1], space, ti, atoms, log)) { + return GL_FALSE; + } + ti->can_be_referenced = GL_FALSE; + ti->is_swizzled = GL_FALSE; + break; + /*case SLANG_OPER_BITOR: */ + /*case SLANG_OPER_BITXOR: */ + /*case SLANG_OPER_BITAND: */ + /*case SLANG_OPER_LSHIFT: */ + /*case SLANG_OPER_RSHIFT: */ + case SLANG_OPER_ADD: + assert(op->num_children == 2); + if (!typeof_math_call("+", op, space, &ti->spec, atoms, log)) + return GL_FALSE; + break; + case SLANG_OPER_SUBTRACT: + assert(op->num_children == 2); + if (!typeof_math_call("-", op, space, &ti->spec, atoms, log)) + return GL_FALSE; + break; + case SLANG_OPER_MULTIPLY: + assert(op->num_children == 2); + if (!typeof_math_call("*", op, space, &ti->spec, atoms, log)) + return GL_FALSE; + break; + case SLANG_OPER_DIVIDE: + assert(op->num_children == 2); + if (!typeof_math_call("/", op, space, &ti->spec, atoms, log)) + return GL_FALSE; + break; + /*case SLANG_OPER_MODULUS: */ + case SLANG_OPER_PLUS: + if (!_slang_typeof_operation(op->children, space, ti, atoms, log)) + return GL_FALSE; + ti->can_be_referenced = GL_FALSE; + ti->is_swizzled = GL_FALSE; + break; + case SLANG_OPER_MINUS: + assert(op->num_children == 1); + if (!typeof_math_call("-", op, space, &ti->spec, atoms, log)) + return GL_FALSE; + break; + /*case SLANG_OPER_COMPLEMENT: */ + case SLANG_OPER_SUBSCRIPT: + { + slang_typeinfo _ti; + + if (!slang_typeinfo_construct(&_ti)) + return GL_FALSE; + if (!_slang_typeof_operation(op->children, space, &_ti, atoms, log)) { + slang_typeinfo_destruct(&_ti); + return GL_FALSE; + } + ti->can_be_referenced = _ti.can_be_referenced; + if (_ti.spec.type == SLANG_SPEC_ARRAY) { + if (!slang_type_specifier_copy(&ti->spec, _ti.spec._array)) { + slang_typeinfo_destruct(&_ti); + return GL_FALSE; + } + } + else { + if (!_slang_type_is_vector(_ti.spec.type) + && !_slang_type_is_matrix(_ti.spec.type)) { + slang_typeinfo_destruct(&_ti); + slang_info_log_error(log, "cannot index a non-array type"); + return GL_FALSE; + } + ti->spec.type = _slang_type_base(_ti.spec.type); + } + slang_typeinfo_destruct(&_ti); + } + break; + case SLANG_OPER_CALL: + if (op->array_constructor) { + /* build array typeinfo */ + ti->spec.type = SLANG_SPEC_ARRAY; + ti->spec._array = (slang_type_specifier *) + _slang_alloc(sizeof(slang_type_specifier)); + slang_type_specifier_ctr(ti->spec._array); + + ti->spec._array->type = + slang_type_specifier_type_from_string((char *) op->a_id); + ti->array_len = op->num_children; + } + else if (op->fun) { + /* we've resolved this call before */ + slang_type_specifier_copy(&ti->spec, &op->fun->header.type.specifier); + } + else { + slang_function *fun; + if (!_slang_typeof_function(op->a_id, op->children, op->num_children, + space, &ti->spec, &fun, atoms, log)) + return GL_FALSE; + if (fun) { + /* save result for future use */ + op->fun = fun; + } + else { + slang_struct *s = + slang_struct_scope_find(space->structs, op->a_id, GL_TRUE); + if (s) { + /* struct initializer */ + ti->spec.type = SLANG_SPEC_STRUCT; + ti->spec._struct = + (slang_struct *) _slang_alloc(sizeof(slang_struct)); + if (ti->spec._struct == NULL) + return GL_FALSE; + if (!slang_struct_construct(ti->spec._struct)) { + _slang_free(ti->spec._struct); + ti->spec._struct = NULL; + return GL_FALSE; + } + if (!slang_struct_copy(ti->spec._struct, s)) + return GL_FALSE; + } + else { + /* float, int, vec4, mat3, etc. constructor? */ + const char *name; + slang_type_specifier_type type; + + name = slang_atom_pool_id(atoms, op->a_id); + type = slang_type_specifier_type_from_string(name); + if (type == SLANG_SPEC_VOID) { + slang_info_log_error(log, "undefined function '%s'", name); + return GL_FALSE; + } + ti->spec.type = type; + } + } + } + break; + case SLANG_OPER_METHOD: + /* at this time, GLSL 1.20 only has one method: array.length() + * which returns an integer. + */ + ti->spec.type = SLANG_SPEC_INT; + break; + case SLANG_OPER_FIELD: + { + slang_typeinfo _ti; + + if (!slang_typeinfo_construct(&_ti)) + return GL_FALSE; + if (!_slang_typeof_operation(op->children, space, &_ti, atoms, log)) { + slang_typeinfo_destruct(&_ti); + return GL_FALSE; + } + if (_ti.spec.type == SLANG_SPEC_STRUCT) { + slang_variable *field; + + field = _slang_variable_locate(_ti.spec._struct->fields, op->a_id, + GL_FALSE); + if (field == NULL) { + slang_typeinfo_destruct(&_ti); + return GL_FALSE; + } + if (!slang_type_specifier_copy(&ti->spec, &field->type.specifier)) { + slang_typeinfo_destruct(&_ti); + return GL_FALSE; + } + ti->can_be_referenced = _ti.can_be_referenced; + ti->array_len = field->array_len; + } + else { + GLuint rows; + const char *swizzle; + slang_type_specifier_type base; + + /* determine the swizzle of the field expression */ + if (!_slang_type_is_vector(_ti.spec.type)) { + slang_typeinfo_destruct(&_ti); + slang_info_log_error(log, "Can't swizzle scalar expression"); + return GL_FALSE; + } + rows = _slang_type_dim(_ti.spec.type); + swizzle = slang_atom_pool_id(atoms, op->a_id); + if (!_slang_is_swizzle(swizzle, rows, &ti->swz)) { + slang_typeinfo_destruct(&_ti); + slang_info_log_error(log, "bad swizzle '%s'", swizzle); + return GL_FALSE; + } + ti->is_swizzled = GL_TRUE; + ti->can_be_referenced = _ti.can_be_referenced + && _slang_is_swizzle_mask(&ti->swz, rows); + if (_ti.is_swizzled) { + slang_swizzle swz; + + /* swizzle the swizzle */ + _slang_multiply_swizzles(&swz, &_ti.swz, &ti->swz); + ti->swz = swz; + } + base = _slang_type_base(_ti.spec.type); + switch (ti->swz.num_components) { + case 1: + ti->spec.type = base; + break; + case 2: + switch (base) { + case SLANG_SPEC_FLOAT: + ti->spec.type = SLANG_SPEC_VEC2; + break; + case SLANG_SPEC_INT: + ti->spec.type = SLANG_SPEC_IVEC2; + break; + case SLANG_SPEC_BOOL: + ti->spec.type = SLANG_SPEC_BVEC2; + break; + default: + break; + } + break; + case 3: + switch (base) { + case SLANG_SPEC_FLOAT: + ti->spec.type = SLANG_SPEC_VEC3; + break; + case SLANG_SPEC_INT: + ti->spec.type = SLANG_SPEC_IVEC3; + break; + case SLANG_SPEC_BOOL: + ti->spec.type = SLANG_SPEC_BVEC3; + break; + default: + break; + } + break; + case 4: + switch (base) { + case SLANG_SPEC_FLOAT: + ti->spec.type = SLANG_SPEC_VEC4; + break; + case SLANG_SPEC_INT: + ti->spec.type = SLANG_SPEC_IVEC4; + break; + case SLANG_SPEC_BOOL: + ti->spec.type = SLANG_SPEC_BVEC4; + break; + default: + break; + } + break; + default: + break; + } + } + slang_typeinfo_destruct(&_ti); + } + break; + case SLANG_OPER_POSTINCREMENT: + case SLANG_OPER_POSTDECREMENT: + if (!_slang_typeof_operation(op->children, space, ti, atoms, log)) + return GL_FALSE; + ti->can_be_referenced = GL_FALSE; + ti->is_swizzled = GL_FALSE; + break; + default: + return GL_FALSE; + } + + return GL_TRUE; +} + + +/** + * Determine if a type is a matrix. + * \return GL_TRUE if is a matrix, GL_FALSE otherwise. + */ +GLboolean +_slang_type_is_matrix(slang_type_specifier_type ty) +{ + switch (ty) { + case SLANG_SPEC_MAT2: + case SLANG_SPEC_MAT3: + case SLANG_SPEC_MAT4: + case SLANG_SPEC_MAT23: + case SLANG_SPEC_MAT32: + case SLANG_SPEC_MAT24: + case SLANG_SPEC_MAT42: + case SLANG_SPEC_MAT34: + case SLANG_SPEC_MAT43: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Determine if a type is a vector. + * \return GL_TRUE if is a vector, GL_FALSE otherwise. + */ +GLboolean +_slang_type_is_vector(slang_type_specifier_type ty) +{ + switch (ty) { + case SLANG_SPEC_VEC2: + case SLANG_SPEC_VEC3: + case SLANG_SPEC_VEC4: + case SLANG_SPEC_IVEC2: + case SLANG_SPEC_IVEC3: + case SLANG_SPEC_IVEC4: + case SLANG_SPEC_BVEC2: + case SLANG_SPEC_BVEC3: + case SLANG_SPEC_BVEC4: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Determine if a type is a float, float vector or float matrix. + * \return GL_TRUE if so, GL_FALSE otherwise + */ +GLboolean +_slang_type_is_float_vec_mat(slang_type_specifier_type ty) +{ + switch (ty) { + case SLANG_SPEC_FLOAT: + case SLANG_SPEC_VEC2: + case SLANG_SPEC_VEC3: + case SLANG_SPEC_VEC4: + case SLANG_SPEC_MAT2: + case SLANG_SPEC_MAT3: + case SLANG_SPEC_MAT4: + case SLANG_SPEC_MAT23: + case SLANG_SPEC_MAT32: + case SLANG_SPEC_MAT24: + case SLANG_SPEC_MAT42: + case SLANG_SPEC_MAT34: + case SLANG_SPEC_MAT43: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Given a vector type, return the type of the vector's elements. + * For a matrix, return the type of the columns. + */ +slang_type_specifier_type +_slang_type_base(slang_type_specifier_type ty) +{ + switch (ty) { + case SLANG_SPEC_FLOAT: + case SLANG_SPEC_VEC2: + case SLANG_SPEC_VEC3: + case SLANG_SPEC_VEC4: + return SLANG_SPEC_FLOAT; + case SLANG_SPEC_INT: + case SLANG_SPEC_IVEC2: + case SLANG_SPEC_IVEC3: + case SLANG_SPEC_IVEC4: + return SLANG_SPEC_INT; + case SLANG_SPEC_BOOL: + case SLANG_SPEC_BVEC2: + case SLANG_SPEC_BVEC3: + case SLANG_SPEC_BVEC4: + return SLANG_SPEC_BOOL; + case SLANG_SPEC_MAT2: + return SLANG_SPEC_VEC2; + case SLANG_SPEC_MAT3: + return SLANG_SPEC_VEC3; + case SLANG_SPEC_MAT4: + return SLANG_SPEC_VEC4; + case SLANG_SPEC_MAT23: + return SLANG_SPEC_VEC3; + case SLANG_SPEC_MAT32: + return SLANG_SPEC_VEC2; + case SLANG_SPEC_MAT24: + return SLANG_SPEC_VEC4; + case SLANG_SPEC_MAT42: + return SLANG_SPEC_VEC2; + case SLANG_SPEC_MAT34: + return SLANG_SPEC_VEC4; + case SLANG_SPEC_MAT43: + return SLANG_SPEC_VEC3; + default: + return SLANG_SPEC_VOID; + } +} + + +/** + * Return the dimensionality of a vector, or for a matrix, return number + * of columns. + */ +GLuint +_slang_type_dim(slang_type_specifier_type ty) +{ + switch (ty) { + case SLANG_SPEC_FLOAT: + case SLANG_SPEC_INT: + case SLANG_SPEC_BOOL: + return 1; + case SLANG_SPEC_VEC2: + case SLANG_SPEC_IVEC2: + case SLANG_SPEC_BVEC2: + case SLANG_SPEC_MAT2: + return 2; + case SLANG_SPEC_VEC3: + case SLANG_SPEC_IVEC3: + case SLANG_SPEC_BVEC3: + case SLANG_SPEC_MAT3: + return 3; + case SLANG_SPEC_VEC4: + case SLANG_SPEC_IVEC4: + case SLANG_SPEC_BVEC4: + case SLANG_SPEC_MAT4: + return 4; + + case SLANG_SPEC_MAT23: + return 2; + case SLANG_SPEC_MAT32: + return 3; + case SLANG_SPEC_MAT24: + return 2; + case SLANG_SPEC_MAT42: + return 4; + case SLANG_SPEC_MAT34: + return 3; + case SLANG_SPEC_MAT43: + return 4; + + default: + return 0; + } +} + + +/** + * Return the GL_* type that corresponds to a SLANG_SPEC_* type. + */ +GLenum +_slang_gltype_from_specifier(const slang_type_specifier *type) +{ + switch (type->type) { + case SLANG_SPEC_BOOL: + return GL_BOOL; + case SLANG_SPEC_BVEC2: + return GL_BOOL_VEC2; + case SLANG_SPEC_BVEC3: + return GL_BOOL_VEC3; + case SLANG_SPEC_BVEC4: + return GL_BOOL_VEC4; + case SLANG_SPEC_INT: + return GL_INT; + case SLANG_SPEC_IVEC2: + return GL_INT_VEC2; + case SLANG_SPEC_IVEC3: + return GL_INT_VEC3; + case SLANG_SPEC_IVEC4: + return GL_INT_VEC4; + case SLANG_SPEC_FLOAT: + return GL_FLOAT; + case SLANG_SPEC_VEC2: + return GL_FLOAT_VEC2; + case SLANG_SPEC_VEC3: + return GL_FLOAT_VEC3; + case SLANG_SPEC_VEC4: + return GL_FLOAT_VEC4; + case SLANG_SPEC_MAT2: + return GL_FLOAT_MAT2; + case SLANG_SPEC_MAT3: + return GL_FLOAT_MAT3; + case SLANG_SPEC_MAT4: + return GL_FLOAT_MAT4; + case SLANG_SPEC_MAT23: + return GL_FLOAT_MAT2x3; + case SLANG_SPEC_MAT32: + return GL_FLOAT_MAT3x2; + case SLANG_SPEC_MAT24: + return GL_FLOAT_MAT2x4; + case SLANG_SPEC_MAT42: + return GL_FLOAT_MAT4x2; + case SLANG_SPEC_MAT34: + return GL_FLOAT_MAT3x4; + case SLANG_SPEC_MAT43: + return GL_FLOAT_MAT4x3; + case SLANG_SPEC_SAMPLER_1D: + return GL_SAMPLER_1D; + case SLANG_SPEC_SAMPLER_2D: + return GL_SAMPLER_2D; + case SLANG_SPEC_SAMPLER_3D: + return GL_SAMPLER_3D; + case SLANG_SPEC_SAMPLER_CUBE: + return GL_SAMPLER_CUBE; + case SLANG_SPEC_SAMPLER_1D_SHADOW: + return GL_SAMPLER_1D_SHADOW; + case SLANG_SPEC_SAMPLER_2D_SHADOW: + return GL_SAMPLER_2D_SHADOW; + case SLANG_SPEC_SAMPLER_RECT: + return GL_SAMPLER_2D_RECT_ARB; + case SLANG_SPEC_SAMPLER_RECT_SHADOW: + return GL_SAMPLER_2D_RECT_SHADOW_ARB; + case SLANG_SPEC_SAMPLER_1D_ARRAY: + return GL_SAMPLER_1D_ARRAY_EXT; + case SLANG_SPEC_SAMPLER_2D_ARRAY: + return GL_SAMPLER_2D_ARRAY_EXT; + case SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW: + return GL_SAMPLER_1D_ARRAY_SHADOW_EXT; + case SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW: + return GL_SAMPLER_2D_ARRAY_SHADOW_EXT; + case SLANG_SPEC_ARRAY: + return _slang_gltype_from_specifier(type->_array); + case SLANG_SPEC_STRUCT: + /* fall-through */ + default: + return GL_NONE; + } +} + |