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vkd3d/libs/vkd3d-shader/dxil.c

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/*
* Copyright 2023 Conor McCarthy for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "vkd3d_shader_private.h"
#define VKD3D_SM6_VERSION_MAJOR(version) (((version) >> 4) & 0xf)
#define VKD3D_SM6_VERSION_MINOR(version) (((version) >> 0) & 0xf)
#define BITCODE_MAGIC VKD3D_MAKE_TAG('B', 'C', 0xc0, 0xde)
enum bitcode_block_id
{
BLOCKINFO_BLOCK = 0,
MODULE_BLOCK = 8,
PARAMATTR_BLOCK = 9,
PARAMATTR_GROUP_BLOCK = 10,
CONSTANTS_BLOCK = 11,
FUNCTION_BLOCK = 12,
VALUE_SYMTAB_BLOCK = 14,
METADATA_BLOCK = 15,
METADATA_ATTACHMENT_BLOCK = 16,
TYPE_BLOCK = 17,
USELIST_BLOCK = 18,
};
enum bitcode_blockinfo_code
{
SETBID = 1,
BLOCKNAME = 2,
SETRECORDNAME = 3,
};
enum bitcode_block_abbreviation
{
END_BLOCK = 0,
ENTER_SUBBLOCK = 1,
DEFINE_ABBREV = 2,
UNABBREV_RECORD = 3,
};
enum bitcode_abbrev_type
{
ABBREV_FIXED = 1,
ABBREV_VBR = 2,
ABBREV_ARRAY = 3,
ABBREV_CHAR = 4,
ABBREV_BLOB = 5,
};
struct dxil_record
{
unsigned int code;
unsigned int operand_count;
uint64_t operands[];
};
struct dxil_block
{
const struct dxil_block *parent;
enum bitcode_block_id id;
unsigned int abbrev_len;
unsigned int start;
unsigned int length;
unsigned int level;
/* The abbrev, block and record structs are not relocatable. */
struct dxil_abbrev **abbrevs;
size_t abbrev_capacity;
size_t abbrev_count;
unsigned int blockinfo_bid;
struct dxil_block **child_blocks;
size_t child_block_capacity;
size_t child_block_count;
struct dxil_record **records;
size_t record_capacity;
size_t record_count;
};
struct sm6_parser
{
const uint32_t *ptr, *start, *end;
unsigned int bitpos;
struct dxil_block root_block;
struct dxil_block *current_block;
struct vkd3d_shader_parser p;
};
struct dxil_abbrev_operand
{
uint64_t context;
bool (*read_operand)(struct sm6_parser *sm6, uint64_t context, uint64_t *operand);
};
struct dxil_abbrev
{
unsigned int count;
bool is_array;
struct dxil_abbrev_operand operands[];
};
static struct sm6_parser *sm6_parser(struct vkd3d_shader_parser *parser)
{
return CONTAINING_RECORD(parser, struct sm6_parser, p);
}
static bool sm6_parser_is_end(struct sm6_parser *sm6)
{
return sm6->ptr == sm6->end;
}
static uint32_t sm6_parser_read_uint32(struct sm6_parser *sm6)
{
if (sm6_parser_is_end(sm6))
{
sm6->p.failed = true;
return 0;
}
return *sm6->ptr++;
}
static uint32_t sm6_parser_read_bits(struct sm6_parser *sm6, unsigned int length)
{
unsigned int l, prev_len = 0;
uint32_t bits;
if (!length)
return 0;
assert(length < 32);
if (sm6_parser_is_end(sm6))
{
sm6->p.failed = true;
return 0;
}
assert(sm6->bitpos < 32);
bits = *sm6->ptr >> sm6->bitpos;
l = 32 - sm6->bitpos;
if (l <= length)
{
++sm6->ptr;
if (sm6_parser_is_end(sm6) && l < length)
{
sm6->p.failed = true;
return bits;
}
sm6->bitpos = 0;
bits |= *sm6->ptr << l;
prev_len = l;
}
sm6->bitpos += length - prev_len;
return bits & ((1 << length) - 1);
}
static uint64_t sm6_parser_read_vbr(struct sm6_parser *sm6, unsigned int length)
{
unsigned int bits, flag, mask, shift = 0;
uint64_t result = 0;
if (!length)
return 0;
if (sm6_parser_is_end(sm6))
{
sm6->p.failed = true;
return 0;
}
flag = 1 << (length - 1);
mask = flag - 1;
do
{
bits = sm6_parser_read_bits(sm6, length);
result |= (uint64_t)(bits & mask) << shift;
shift += length - 1;
} while ((bits & flag) && !sm6->p.failed && shift < 64);
sm6->p.failed |= !!(bits & flag);
return result;
}
static void sm6_parser_align_32(struct sm6_parser *sm6)
{
if (!sm6->bitpos)
return;
if (sm6_parser_is_end(sm6))
{
sm6->p.failed = true;
return;
}
++sm6->ptr;
sm6->bitpos = 0;
}
static bool dxil_block_handle_blockinfo_record(struct dxil_block *block, struct dxil_record *record)
{
/* BLOCKINFO blocks must only occur immediately below the module root block. */
if (block->level > 1)
{
WARN("Invalid blockinfo block level %u.\n", block->level);
return false;
}
switch (record->code)
{
case SETBID:
if (!record->operand_count)
{
WARN("Missing id operand.\n");
return false;
}
if (record->operands[0] > UINT_MAX)
WARN("Truncating block id %"PRIu64".\n", record->operands[0]);
block->blockinfo_bid = record->operands[0];
break;
case BLOCKNAME:
case SETRECORDNAME:
break;
default:
FIXME("Unhandled BLOCKINFO record type %u.\n", record->code);
break;
}
return true;
}
static enum vkd3d_result dxil_block_add_record(struct dxil_block *block, struct dxil_record *record)
{
unsigned int reserve;
switch (block->id)
{
/* Rough initial reserve sizes for small shaders. */
case CONSTANTS_BLOCK: reserve = 32; break;
case FUNCTION_BLOCK: reserve = 128; break;
case METADATA_BLOCK: reserve = 32; break;
case TYPE_BLOCK: reserve = 32; break;
default: reserve = 8; break;
}
reserve = max(reserve, block->record_count + 1);
if (!vkd3d_array_reserve((void **)&block->records, &block->record_capacity, reserve, sizeof(*block->records)))
{
ERR("Failed to allocate %u records.\n", reserve);
return VKD3D_ERROR_OUT_OF_MEMORY;
}
if (block->id == BLOCKINFO_BLOCK && !dxil_block_handle_blockinfo_record(block, record))
return VKD3D_ERROR_INVALID_SHADER;
block->records[block->record_count++] = record;
return VKD3D_OK;
}
static enum vkd3d_result sm6_parser_read_unabbrev_record(struct sm6_parser *sm6)
{
struct dxil_block *block = sm6->current_block;
enum vkd3d_result ret = VKD3D_OK;
unsigned int code, count, i;
struct dxil_record *record;
code = sm6_parser_read_vbr(sm6, 6);
count = sm6_parser_read_vbr(sm6, 6);
if (!(record = vkd3d_malloc(sizeof(*record) + count * sizeof(record->operands[0]))))
{
ERR("Failed to allocate record with %u operands.\n", count);
return VKD3D_ERROR_OUT_OF_MEMORY;
}
record->code = code;
record->operand_count = count;
for (i = 0; i < count; ++i)
record->operands[i] = sm6_parser_read_vbr(sm6, 6);
if (sm6->p.failed)
ret = VKD3D_ERROR_INVALID_SHADER;
if (ret < 0 || (ret = dxil_block_add_record(block, record)) < 0)
vkd3d_free(record);
return ret;
}
static bool sm6_parser_read_literal_operand(struct sm6_parser *sm6, uint64_t context, uint64_t *op)
{
*op = context;
return !sm6->p.failed;
}
static bool sm6_parser_read_fixed_operand(struct sm6_parser *sm6, uint64_t context, uint64_t *op)
{
*op = sm6_parser_read_bits(sm6, context);
return !sm6->p.failed;
}
static bool sm6_parser_read_vbr_operand(struct sm6_parser *sm6, uint64_t context, uint64_t *op)
{
*op = sm6_parser_read_vbr(sm6, context);
return !sm6->p.failed;
}
static bool sm6_parser_read_char6_operand(struct sm6_parser *sm6, uint64_t context, uint64_t *op)
{
*op = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._"[sm6_parser_read_bits(sm6, 6)];
return !sm6->p.failed;
}
static bool sm6_parser_read_blob_operand(struct sm6_parser *sm6, uint64_t context, uint64_t *op)
{
int count = sm6_parser_read_vbr(sm6, 6);
sm6_parser_align_32(sm6);
for (; count > 0; count -= 4)
sm6_parser_read_uint32(sm6);
FIXME("Unhandled blob operand.\n");
return false;
}
static enum vkd3d_result dxil_abbrev_init(struct dxil_abbrev *abbrev, unsigned int count, struct sm6_parser *sm6)
{
enum bitcode_abbrev_type prev_type, type;
unsigned int i;
abbrev->is_array = false;
for (i = 0, prev_type = 0; i < count && !sm6->p.failed; ++i)
{
if (sm6_parser_read_bits(sm6, 1))
{
if (prev_type == ABBREV_ARRAY)
{
WARN("Unexpected literal abbreviation after array.\n");
return VKD3D_ERROR_INVALID_SHADER;
}
abbrev->operands[i].context = sm6_parser_read_vbr(sm6, 8);
abbrev->operands[i].read_operand = sm6_parser_read_literal_operand;
continue;
}
switch (type = sm6_parser_read_bits(sm6, 3))
{
case ABBREV_FIXED:
case ABBREV_VBR:
abbrev->operands[i].context = sm6_parser_read_vbr(sm6, 5);
abbrev->operands[i].read_operand = (type == ABBREV_FIXED) ? sm6_parser_read_fixed_operand
: sm6_parser_read_vbr_operand;
break;
case ABBREV_ARRAY:
if (prev_type == ABBREV_ARRAY || i != count - 2)
{
WARN("Unexpected array abbreviation.\n");
return VKD3D_ERROR_INVALID_SHADER;
}
abbrev->is_array = true;
--i;
--count;
break;
case ABBREV_CHAR:
abbrev->operands[i].read_operand = sm6_parser_read_char6_operand;
break;
case ABBREV_BLOB:
if (prev_type == ABBREV_ARRAY || i != count - 1)
{
WARN("Unexpected blob abbreviation.\n");
return VKD3D_ERROR_INVALID_SHADER;
}
abbrev->operands[i].read_operand = sm6_parser_read_blob_operand;
break;
}
prev_type = type;
}
abbrev->count = count;
return sm6->p.failed ? VKD3D_ERROR_INVALID_SHADER : VKD3D_OK;
}
static enum vkd3d_result sm6_parser_add_block_abbrev(struct sm6_parser *sm6)
{
struct dxil_block *block = sm6->current_block;
struct dxil_abbrev *abbrev;
enum vkd3d_result ret;
unsigned int count;
if (block->id == BLOCKINFO_BLOCK)
{
FIXME("Unhandled global abbreviation.\n");
return VKD3D_ERROR_INVALID_SHADER;
}
count = sm6_parser_read_vbr(sm6, 5);
if (!vkd3d_array_reserve((void **)&block->abbrevs, &block->abbrev_capacity, block->abbrev_count + 1, sizeof(*block->abbrevs))
|| !(abbrev = vkd3d_malloc(sizeof(*abbrev) + count * sizeof(abbrev->operands[0]))))
{
ERR("Failed to allocate block abbreviation.\n");
return VKD3D_ERROR_OUT_OF_MEMORY;
}
if ((ret = dxil_abbrev_init(abbrev, count, sm6)) < 0)
{
vkd3d_free(abbrev);
return ret;
}
block->abbrevs[block->abbrev_count++] = abbrev;
return VKD3D_OK;
}
static enum vkd3d_result sm6_parser_read_abbrev_record(struct sm6_parser *sm6, unsigned int abbrev_id)
{
enum vkd3d_result ret = VKD3D_ERROR_INVALID_SHADER;
struct dxil_block *block = sm6->current_block;
struct dxil_record *temp, *record;
unsigned int i, count, array_len;
struct dxil_abbrev *abbrev;
uint64_t code;
if (abbrev_id >= block->abbrev_count)
{
WARN("Invalid abbreviation id %u.\n", abbrev_id);
return VKD3D_ERROR_INVALID_SHADER;
}
abbrev = block->abbrevs[abbrev_id];
if (!(count = abbrev->count))
return VKD3D_OK;
if (count == 1 && abbrev->is_array)
return VKD3D_ERROR_INVALID_SHADER;
/* First operand is the record code. The array is included in the count, but will be done separately. */
count -= abbrev->is_array + 1;
if (!(record = vkd3d_malloc(sizeof(*record) + count * sizeof(record->operands[0]))))
{
ERR("Failed to allocate record with %u operands.\n", count);
return VKD3D_ERROR_OUT_OF_MEMORY;
}
if (!abbrev->operands[0].read_operand(sm6, abbrev->operands[0].context, &code))
goto fail;
if (code > UINT_MAX)
FIXME("Truncating 64-bit record code %#"PRIx64".\n", code);
record->code = code;
for (i = 0; i < count; ++i)
if (!abbrev->operands[i + 1].read_operand(sm6, abbrev->operands[i + 1].context, &record->operands[i]))
goto fail;
record->operand_count = count;
/* An array can occur only as the last operand. */
if (abbrev->is_array)
{
array_len = sm6_parser_read_vbr(sm6, 6);
if (!(temp = vkd3d_realloc(record, sizeof(*record) + (count + array_len) * sizeof(record->operands[0]))))
{
ERR("Failed to allocate record with %u operands.\n", count + array_len);
ret = VKD3D_ERROR_OUT_OF_MEMORY;
goto fail;
}
record = temp;
for (i = 0; i < array_len; ++i)
{
if (!abbrev->operands[count + 1].read_operand(sm6, abbrev->operands[count + 1].context,
&record->operands[count + i]))
{
goto fail;
}
}
record->operand_count += array_len;
}
if ((ret = dxil_block_add_record(block, record)) < 0)
goto fail;
return VKD3D_OK;
fail:
vkd3d_free(record);
return ret;
}
static enum vkd3d_result dxil_block_init(struct dxil_block *block, const struct dxil_block *parent,
struct sm6_parser *sm6);
static enum vkd3d_result dxil_block_read(struct dxil_block *parent, struct sm6_parser *sm6)
{
unsigned int reserve = (parent->id == MODULE_BLOCK) ? 12 : 2;
struct dxil_block *block;
enum vkd3d_result ret;
sm6->current_block = parent;
do
{
unsigned int abbrev_id = sm6_parser_read_bits(sm6, parent->abbrev_len);
switch (abbrev_id)
{
case END_BLOCK:
sm6_parser_align_32(sm6);
return VKD3D_OK;
case ENTER_SUBBLOCK:
if (parent->id != MODULE_BLOCK && parent->id != FUNCTION_BLOCK)
{
WARN("Invalid subblock parent id %u.\n", parent->id);
return VKD3D_ERROR_INVALID_SHADER;
}
if (!vkd3d_array_reserve((void **)&parent->child_blocks, &parent->child_block_capacity,
max(reserve, parent->child_block_count + 1), sizeof(*parent->child_blocks))
|| !(block = vkd3d_calloc(1, sizeof(*block))))
{
ERR("Failed to allocate block.\n");
return VKD3D_ERROR_OUT_OF_MEMORY;
}
if ((ret = dxil_block_init(block, parent, sm6)) < 0)
{
vkd3d_free(block);
return ret;
}
parent->child_blocks[parent->child_block_count++] = block;
sm6->current_block = parent;
break;
case DEFINE_ABBREV:
if ((ret = sm6_parser_add_block_abbrev(sm6)) < 0)
return ret;
break;
case UNABBREV_RECORD:
if ((ret = sm6_parser_read_unabbrev_record(sm6)) < 0)
{
WARN("Failed to read unabbreviated record.\n");
return ret;
}
break;
default:
if ((ret = sm6_parser_read_abbrev_record(sm6, abbrev_id - 4)) < 0)
{
WARN("Failed to read abbreviated record.\n");
return ret;
}
break;
}
} while (!sm6->p.failed);
return VKD3D_ERROR_INVALID_SHADER;
}
static void dxil_block_destroy(struct dxil_block *block)
{
unsigned int i;
for (i = 0; i < block->record_count; ++i)
vkd3d_free(block->records[i]);
vkd3d_free(block->records);
for (i = 0; i < block->child_block_count; ++i)
{
dxil_block_destroy(block->child_blocks[i]);
vkd3d_free(block->child_blocks[i]);
}
vkd3d_free(block->child_blocks);
block->records = NULL;
block->record_count = 0;
block->child_blocks = NULL;
block->child_block_count = 0;
}
static enum vkd3d_result dxil_block_init(struct dxil_block *block, const struct dxil_block *parent,
struct sm6_parser *sm6)
{
enum vkd3d_result ret;
unsigned int i;
block->parent = parent;
block->level = parent ? parent->level + 1 : 0;
block->id = sm6_parser_read_vbr(sm6, 8);
block->abbrev_len = sm6_parser_read_vbr(sm6, 4);
sm6_parser_align_32(sm6);
block->length = sm6_parser_read_uint32(sm6);
block->start = sm6->ptr - sm6->start;
if (sm6->p.failed)
return VKD3D_ERROR_INVALID_SHADER;
if ((ret = dxil_block_read(block, sm6)) < 0)
dxil_block_destroy(block);
for (i = 0; i < block->abbrev_count; ++i)
vkd3d_free(block->abbrevs[i]);
vkd3d_free(block->abbrevs);
block->abbrevs = NULL;
block->abbrev_count = 0;
return ret;
}
static void sm6_parser_destroy(struct vkd3d_shader_parser *parser)
{
struct sm6_parser *sm6 = sm6_parser(parser);
dxil_block_destroy(&sm6->root_block);
shader_instruction_array_destroy(&parser->instructions);
free_shader_desc(&parser->shader_desc);
vkd3d_free(sm6);
}
static const struct vkd3d_shader_parser_ops sm6_parser_ops =
{
.parser_destroy = sm6_parser_destroy,
};
static enum vkd3d_result sm6_parser_init(struct sm6_parser *sm6, const uint32_t *byte_code, size_t byte_code_size,
const char *source_name, struct vkd3d_shader_message_context *message_context)
{
const struct vkd3d_shader_location location = {.source_name = source_name};
uint32_t version_token, dxil_version, token_count, magic;
unsigned int count, length, chunk_offset, chunk_size;
enum bitcode_block_abbreviation abbr;
struct vkd3d_shader_version version;
struct dxil_block *block;
enum vkd3d_result ret;
count = byte_code_size / sizeof(*byte_code);
if (count < 6)
{
WARN("Invalid data size %zu.\n", byte_code_size);
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_SIZE,
"DXIL chunk size %zu is smaller than the DXIL header size.", byte_code_size);
return VKD3D_ERROR_INVALID_SHADER;
}
version_token = byte_code[0];
TRACE("Compiler version: 0x%08x.\n", version_token);
token_count = byte_code[1];
TRACE("Token count: %u.\n", token_count);
if (token_count < 6 || count < token_count)
{
WARN("Invalid token count %u (word count %u).\n", token_count, count);
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_CHUNK_SIZE,
"DXIL chunk token count %#x is invalid (word count %u).", token_count, count);
return VKD3D_ERROR_INVALID_SHADER;
}
if (byte_code[2] != TAG_DXIL)
WARN("Unknown magic number 0x%08x.\n", byte_code[2]);
dxil_version = byte_code[3];
if (dxil_version > 0x102)
WARN("Unknown DXIL version: 0x%08x.\n", dxil_version);
else
TRACE("DXIL version: 0x%08x.\n", dxil_version);
chunk_offset = byte_code[4];
if (chunk_offset < 16 || chunk_offset >= byte_code_size)
{
WARN("Invalid bitcode chunk offset %#x (data size %zu).\n", chunk_offset, byte_code_size);
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_CHUNK_OFFSET,
"DXIL bitcode chunk has invalid offset %#x (data size %#zx).", chunk_offset, byte_code_size);
return VKD3D_ERROR_INVALID_SHADER;
}
chunk_size = byte_code[5];
if (chunk_size > byte_code_size - chunk_offset)
{
WARN("Invalid bitcode chunk size %#x (data size %zu, chunk offset %#x).\n",
chunk_size, byte_code_size, chunk_offset);
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_CHUNK_SIZE,
"DXIL bitcode chunk has invalid size %#x (data size %#zx, chunk offset %#x).",
chunk_size, byte_code_size, chunk_offset);
return VKD3D_ERROR_INVALID_SHADER;
}
sm6->start = (const uint32_t *)((const char*)&byte_code[2] + chunk_offset);
if ((magic = sm6->start[0]) != BITCODE_MAGIC)
{
WARN("Unknown magic number 0x%08x.\n", magic);
vkd3d_shader_parser_warning(&sm6->p, VKD3D_SHADER_WARNING_DXIL_UNKNOWN_MAGIC_NUMBER,
"DXIL bitcode chunk magic number 0x%08x is not the expected 0x%08x.", magic, BITCODE_MAGIC);
}
sm6->end = &sm6->start[(chunk_size + sizeof(*sm6->start) - 1) / sizeof(*sm6->start)];
if ((version.type = version_token >> 16) >= VKD3D_SHADER_TYPE_COUNT)
{
FIXME("Unknown shader type %#x.\n", version.type);
vkd3d_shader_parser_warning(&sm6->p, VKD3D_SHADER_WARNING_DXIL_UNKNOWN_SHADER_TYPE,
"Unknown shader type %#x.", version.type);
}
version.major = VKD3D_SM6_VERSION_MAJOR(version_token);
version.minor = VKD3D_SM6_VERSION_MINOR(version_token);
if ((abbr = sm6->start[1] & 3) != ENTER_SUBBLOCK)
{
WARN("Initial block abbreviation %u is not ENTER_SUBBLOCK.\n", abbr);
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_BITCODE,
"DXIL bitcode chunk has invalid initial block abbreviation %u.", abbr);
return VKD3D_ERROR_INVALID_SHADER;
}
count = max(token_count, 400) - 400;
vkd3d_shader_parser_init(&sm6->p, message_context, source_name, &version, &sm6_parser_ops,
(count + (count >> 2)) / 2u + 10);
sm6->ptr = &sm6->start[1];
sm6->bitpos = 2;
block = &sm6->root_block;
if ((ret = dxil_block_init(block, NULL, sm6)) < 0)
{
if (ret == VKD3D_ERROR_OUT_OF_MEMORY)
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_OUT_OF_MEMORY,
"Out of memory parsing DXIL bitcode chunk.");
else if (ret == VKD3D_ERROR_INVALID_SHADER)
vkd3d_shader_error(message_context, &location, VKD3D_SHADER_ERROR_DXIL_INVALID_BITCODE,
"DXIL bitcode chunk has invalid bitcode.");
else
vkd3d_unreachable();
return ret;
}
length = sm6->ptr - sm6->start - block->start;
if (length != block->length)
{
WARN("Invalid block length %u; expected %u.\n", length, block->length);
vkd3d_shader_parser_warning(&sm6->p, VKD3D_SHADER_WARNING_DXIL_INVALID_BLOCK_LENGTH,
"Root block ends with length %u but indicated length is %u.", length, block->length);
}
if (sm6->ptr != sm6->end)
{
unsigned int expected_length = sm6->end - sm6->start;
length = sm6->ptr - sm6->start;
WARN("Invalid module length %u; expected %u.\n", length, expected_length);
vkd3d_shader_parser_warning(&sm6->p, VKD3D_SHADER_WARNING_DXIL_INVALID_MODULE_LENGTH,
"Module ends with length %u but indicated length is %u.", length, expected_length);
}
dxil_block_destroy(&sm6->root_block);
return VKD3D_OK;
}
int vkd3d_shader_sm6_parser_create(const struct vkd3d_shader_compile_info *compile_info,
struct vkd3d_shader_message_context *message_context, struct vkd3d_shader_parser **parser)
{
struct vkd3d_shader_desc *shader_desc;
uint32_t *byte_code = NULL;
struct sm6_parser *sm6;
int ret;
if (!(sm6 = vkd3d_calloc(1, sizeof(*sm6))))
{
ERR("Failed to allocate parser.\n");
return VKD3D_ERROR_OUT_OF_MEMORY;
}
shader_desc = &sm6->p.shader_desc;
shader_desc->is_dxil = true;
if ((ret = shader_extract_from_dxbc(&compile_info->source, message_context, compile_info->source_name,
shader_desc)) < 0)
{
WARN("Failed to extract shader, vkd3d result %d.\n", ret);
vkd3d_free(sm6);
return ret;
}
sm6->p.shader_desc = *shader_desc;
shader_desc = &sm6->p.shader_desc;
if (((uintptr_t)shader_desc->byte_code & (VKD3D_DXBC_CHUNK_ALIGNMENT - 1)))
{
/* LLVM bitcode should be 32-bit aligned, but before dxc v1.7.2207 this was not always the case in the DXBC
* container due to missing padding after signature names. Get an aligned copy to prevent unaligned access. */
if (!(byte_code = vkd3d_malloc(align(shader_desc->byte_code_size, VKD3D_DXBC_CHUNK_ALIGNMENT))))
ERR("Failed to allocate aligned chunk. Unaligned access will occur.\n");
else
memcpy(byte_code, shader_desc->byte_code, shader_desc->byte_code_size);
}
ret = sm6_parser_init(sm6, byte_code ? byte_code : shader_desc->byte_code, shader_desc->byte_code_size,
compile_info->source_name, message_context);
vkd3d_free(byte_code);
if (ret < 0)
{
WARN("Failed to initialise shader parser.\n");
sm6_parser_destroy(&sm6->p);
return ret;
}
*parser = &sm6->p;
return ret;
}
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