2015-05-04 20:25:09 +01:00
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/*
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* Copyright © 2015 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Jason Ekstrand (jason@jlekstrand.net)
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*
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*/
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#include "nir_spirv.h"
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#include "nir_builder.h"
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#include "spirv.h"
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struct vtn_builder;
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struct vtn_decoration;
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enum vtn_value_type {
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vtn_value_type_invalid = 0,
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vtn_value_type_undef,
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vtn_value_type_string,
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vtn_value_type_decoration_group,
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vtn_value_type_type,
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vtn_value_type_constant,
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vtn_value_type_deref,
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vtn_value_type_function,
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vtn_value_type_block,
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vtn_value_type_ssa,
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2015-05-04 23:17:56 +01:00
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vtn_value_type_extension,
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2015-05-04 20:25:09 +01:00
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};
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struct vtn_block {
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2015-05-06 20:37:10 +01:00
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/* Merge opcode if this block contains a merge; SpvOpNop otherwise. */
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SpvOp merge_op;
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uint32_t merge_block_id;
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2015-05-04 20:25:09 +01:00
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const uint32_t *label;
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const uint32_t *branch;
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nir_block *block;
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};
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struct vtn_function {
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struct exec_node node;
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nir_function_overload *overload;
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struct vtn_block *start_block;
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2015-06-23 18:34:55 +01:00
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const uint32_t *end;
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2015-05-04 20:25:09 +01:00
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};
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typedef bool (*vtn_instruction_handler)(struct vtn_builder *, uint32_t,
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const uint32_t *, unsigned);
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2015-06-18 00:25:38 +01:00
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struct vtn_ssa_value {
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union {
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nir_ssa_def *def;
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struct vtn_ssa_value **elems;
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};
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2015-06-19 02:52:44 +01:00
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/* For matrices, a transposed version of the value, or NULL if it hasn't
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* been computed
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*/
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struct vtn_ssa_value *transposed;
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2015-06-18 00:25:38 +01:00
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const struct glsl_type *type;
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};
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2015-07-02 22:24:12 +01:00
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struct vtn_type {
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const struct glsl_type *type;
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/* for matrices, whether the matrix is stored row-major */
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bool row_major;
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/* for structs, the offset of each member */
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unsigned *offsets;
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/* for arrays and matrices, the array stride */
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unsigned stride;
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/* for arrays, the vtn_type for the elements of the array */
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struct vtn_type *array_element;
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/* for structures, the vtn_type for each member */
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struct vtn_type **members;
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/* Whether this type, or a parent type, has been decorated as a builtin */
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bool is_builtin;
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SpvBuiltIn builtin;
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};
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2015-05-04 20:25:09 +01:00
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struct vtn_value {
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enum vtn_value_type value_type;
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const char *name;
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struct vtn_decoration *decoration;
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union {
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void *ptr;
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char *str;
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struct vtn_type *type;
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2015-07-02 20:55:25 +01:00
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struct {
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nir_constant *constant;
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const struct glsl_type *const_type;
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};
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2015-07-02 23:49:08 +01:00
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struct {
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nir_deref_var *deref;
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struct vtn_type *deref_type;
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};
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2015-05-04 20:25:09 +01:00
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struct vtn_function *func;
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struct vtn_block *block;
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2015-06-18 00:25:38 +01:00
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struct vtn_ssa_value *ssa;
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2015-05-04 23:17:56 +01:00
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vtn_instruction_handler ext_handler;
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2015-05-04 20:25:09 +01:00
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};
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};
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struct vtn_decoration {
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struct vtn_decoration *next;
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2015-07-01 22:17:24 +01:00
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int member; /* -1 if not a member decoration */
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2015-05-04 20:25:09 +01:00
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const uint32_t *literals;
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struct vtn_value *group;
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SpvDecoration decoration;
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};
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struct vtn_builder {
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nir_builder nb;
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nir_shader *shader;
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nir_function_impl *impl;
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struct vtn_block *block;
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2015-06-18 00:25:38 +01:00
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/*
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* In SPIR-V, constants are global, whereas in NIR, the load_const
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* instruction we use is per-function. So while we parse each function, we
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* keep a hash table of constants we've resolved to nir_ssa_value's so
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* far, and we lazily resolve them when we see them used in a function.
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*/
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struct hash_table *const_table;
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2015-06-23 18:34:55 +01:00
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/*
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* Map from nir_block to the vtn_block which ends with it -- used for
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* handling phi nodes.
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*/
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struct hash_table *block_table;
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2015-05-04 20:25:09 +01:00
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unsigned value_id_bound;
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struct vtn_value *values;
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SpvExecutionModel execution_model;
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struct vtn_value *entry_point;
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struct vtn_function *func;
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struct exec_list functions;
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};
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static inline struct vtn_value *
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vtn_push_value(struct vtn_builder *b, uint32_t value_id,
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enum vtn_value_type value_type)
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{
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assert(value_id < b->value_id_bound);
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assert(b->values[value_id].value_type == vtn_value_type_invalid);
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b->values[value_id].value_type = value_type;
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return &b->values[value_id];
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}
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static inline struct vtn_value *
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vtn_untyped_value(struct vtn_builder *b, uint32_t value_id)
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{
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assert(value_id < b->value_id_bound);
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return &b->values[value_id];
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}
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static inline struct vtn_value *
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vtn_value(struct vtn_builder *b, uint32_t value_id,
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enum vtn_value_type value_type)
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{
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struct vtn_value *val = vtn_untyped_value(b, value_id);
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assert(val->value_type == value_type);
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return val;
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}
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2015-06-18 00:25:38 +01:00
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struct vtn_ssa_value *vtn_ssa_value(struct vtn_builder *b, uint32_t value_id);
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2015-05-04 20:25:09 +01:00
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typedef void (*vtn_decoration_foreach_cb)(struct vtn_builder *,
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struct vtn_value *,
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2015-07-01 22:17:24 +01:00
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int member,
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2015-05-04 20:25:09 +01:00
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const struct vtn_decoration *,
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void *);
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void vtn_foreach_decoration(struct vtn_builder *b, struct vtn_value *value,
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vtn_decoration_foreach_cb cb, void *data);
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2015-05-04 23:17:56 +01:00
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bool vtn_handle_glsl450_instruction(struct vtn_builder *b, uint32_t ext_opcode,
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const uint32_t *words, unsigned count);
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