[PATCH v3 0/6] MR2577: d3dcompiler: Use the vkd3d-shader DXBC API.

[Henri Verbeet (＠hverbeet)]

The main advantage is that this way we're getting valid DXBC checksums for DXBC blobs generated by d3dcompiler. See also https://bugs.winehq.org/show_bug.cgi?id=54464.

--
  v3: d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_shader_reflection_init().
      d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_strip_shader().
      d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_get_blob_part().
      d3dcompiler: Use vkd3d_shader_serialize_dxbc() in d3dcompiler_strip_shader().
      d3dcompiler: Use vkd3d_shader_serialize_dxbc() in d3dcompiler_get_blob_part().
      d3dcompiler: Store DXBC sections as vkd3d_shader_dxbc_section_desc structures.

https://gitlab.winehq.org/wine/wine/-/merge_requests/2577

[PATCH v3 1/6] d3dcompiler: Store DXBC sections as vkd3d_shader_dxbc_section_desc structures.

[Henri Verbeet]

From: Henri Verbeet

---
 configure.ac                              |  2 +-
 dlls/d3d10/Makefile.in                    |  1 +
 dlls/d3dcompiler_43/blob.c                | 12 ++++++------
 dlls/d3dcompiler_43/compiler.c            |  2 --
 dlls/d3dcompiler_43/d3dcompiler_private.h | 11 +++--------
 dlls/d3dcompiler_43/reflection.c          | 17 +++++++++--------
 dlls/d3dcompiler_43/utils.c               | 16 ++++++++--------
 7 files changed, 28 insertions(+), 33 deletions(-)

diff --git a/configure.ac b/configure.ac
index d6161d7ec3b..2a86fb0c131 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1089,7 +1089,7 @@ then
         if test "$ac_cv_mingw_header_vkd3d_h" = "yes" -a "$ac_cv_mingw_header_vkd3d_shader_h" = "yes"
         then
             WINE_CHECK_MINGW_LIB(vkd3d,vkd3d_set_log_callback,[:],[:],[$VKD3D_PE_LIBS])
-            WINE_CHECK_MINGW_LIB(vkd3d-shader,vkd3d_shader_compile,[:],[:],[$VKD3D_PE_LIBS])
+            WINE_CHECK_MINGW_LIB(vkd3d-shader,vkd3d_shader_serialize_dxbc,[:],[:],[$VKD3D_PE_LIBS])
             if test "$ac_cv_mingw_lib_vkd3d" = "no" -o "$ac_cv_mingw_lib_vkd3d_shader" = "no"
             then
                 VKD3D_PE_CFLAGS=""
diff --git a/dlls/d3d10/Makefile.in b/dlls/d3d10/Makefile.in
index 1b869f47f6c..df46aa3dff4 100644
--- a/dlls/d3d10/Makefile.in
+++ b/dlls/d3d10/Makefile.in
@@ -3,6 +3,7 @@ IMPORTLIB = d3d10
 IMPORTS   = uuid d3d10core d3dcompiler dxgi
 EXTRADEFS = -DD3D_COMPILER_VERSION=0
 PARENTSRC = ../d3dcompiler_43
+EXTRAINCL = $(VKD3D_PE_CFLAGS)

C_SRCS = \
    d3d10_main.c \
diff --git a/dlls/d3dcompiler_43/blob.c b/dlls/d3dcompiler_43/blob.c
index c8c198fb520..216c2794f20 100644
--- a/dlls/d3dcompiler_43/blob.c
+++ b/dlls/d3dcompiler_43/blob.c
@@ -250,11 +250,11 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D

for (i = 0; i < src_dxbc.count; ++i)
     {
-        struct dxbc_section *section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];

if (check_blob_part(section->tag, part))
         {
-            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data, section->data_size);
+            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data.code, section->data.size);
             if (FAILED(hr))
             {
                 dxbc_destroy(&src_dxbc);
@@ -304,10 +304,10 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
     if (count == 1 && (part == D3D_BLOB_DEBUG_INFO || part == D3D_BLOB_LEGACY_SHADER || part == D3D_BLOB_XNA_PREPASS_SHADER
             || part == D3D_BLOB_XNA_SHADER))
     {
-        hr = D3DCreateBlob(dst_dxbc.sections[0].data_size, blob);
+        hr = D3DCreateBlob(dst_dxbc.sections[0].data.size, blob);
         if (SUCCEEDED(hr))
         {
-            memcpy(ID3D10Blob_GetBufferPointer(*blob), dst_dxbc.sections[0].data, dst_dxbc.sections[0].data_size);
+            memcpy(ID3D10Blob_GetBufferPointer(*blob), dst_dxbc.sections[0].data.code, dst_dxbc.sections[0].data.size);
         }
         else
         {
@@ -391,11 +391,11 @@ static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT

for (i = 0; i < src_dxbc.count; ++i)
     {
-        struct dxbc_section *section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];

if (check_blob_strip(section->tag, flags))
         {
-            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data, section->data_size);
+            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data.code, section->data.size);
             if (FAILED(hr))
             {
                 dxbc_destroy(&src_dxbc);
diff --git a/dlls/d3dcompiler_43/compiler.c b/dlls/d3dcompiler_43/compiler.c
index a7926785184..069ff992c22 100644
--- a/dlls/d3dcompiler_43/compiler.c
+++ b/dlls/d3dcompiler_43/compiler.c
@@ -25,8 +25,6 @@

#include "d3dcompiler_private.h"

-#include <vkd3d_shader.h>
-
 WINE_DEFAULT_DEBUG_CHANNEL(d3dcompiler);

static HRESULT hresult_from_vkd3d_result(int vkd3d_result)
diff --git a/dlls/d3dcompiler_43/d3dcompiler_private.h b/dlls/d3dcompiler_43/d3dcompiler_private.h
index 6dea5a08a85..0f4cd658ac5 100644
--- a/dlls/d3dcompiler_43/d3dcompiler_private.h
+++ b/dlls/d3dcompiler_43/d3dcompiler_private.h
@@ -38,6 +38,8 @@
 #include <assert.h>
 #include <stdint.h>

+#include <vkd3d_shader.h>
+
 /*
  * This doesn't belong here, but for some functions it is possible to return that value,
  * see http://msdn.microsoft.com/en-us/library/bb205278%28v=VS.85%29.aspx
@@ -549,18 +551,11 @@ void SlDeleteShader(struct bwriter_shader *shader) DECLSPEC_HIDDEN;
 #define TAG_XNAP MAKE_TAG('X', 'N', 'A', 'P')
 #define TAG_XNAS MAKE_TAG('X', 'N', 'A', 'S')

-struct dxbc_section
-{
-    DWORD tag;
-    const char *data;
-    DWORD data_size;
-};
-
 struct dxbc
 {
     UINT size;
     UINT count;
-    struct dxbc_section *sections;
+    struct vkd3d_shader_dxbc_section_desc *sections;
 };

HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob) DECLSPEC_HIDDEN;
diff --git a/dlls/d3dcompiler_43/reflection.c b/dlls/d3dcompiler_43/reflection.c
index 0fa0dc16839..b83ede073cd 100644
--- a/dlls/d3dcompiler_43/reflection.c
+++ b/dlls/d3dcompiler_43/reflection.c
@@ -1681,12 +1681,13 @@ err_out:
     return hr;
 }

-static HRESULT d3dcompiler_parse_signature(struct d3dcompiler_shader_signature *s, struct dxbc_section *section)
+static HRESULT d3dcompiler_parse_signature(struct d3dcompiler_shader_signature *s,
+        const struct vkd3d_shader_dxbc_section_desc *section)
 {
     enum D3DCOMPILER_SIGNATURE_ELEMENT_SIZE element_size;
+    const char *ptr = section->data.code;
     D3D11_SIGNATURE_PARAMETER_DESC *d;
     unsigned int string_data_offset;
-    const char *ptr = section->data;
     unsigned int string_data_size;
     unsigned int i, count;
     char *string_data;
@@ -1723,7 +1724,7 @@ static HRESULT d3dcompiler_parse_signature(struct d3dcompiler_shader_signature *

/* 2 u32s for the header, element_size for each element. */
     string_data_offset = 2 * sizeof(uint32_t) + count * element_size * sizeof(uint32_t);
-    string_data_size = section->data_size - string_data_offset;
+    string_data_size = section->data.size - string_data_offset;

string_data = HeapAlloc(GetProcessHeap(), 0, string_data_size);
     if (!string_data)
@@ -1732,7 +1733,7 @@ static HRESULT d3dcompiler_parse_signature(struct d3dcompiler_shader_signature *
         HeapFree(GetProcessHeap(), 0, d);
         return E_OUTOFMEMORY;
     }
-    memcpy(string_data, section->data + string_data_offset, string_data_size);
+    memcpy(string_data, (const char *)section->data.code + string_data_offset, string_data_size);

for (i = 0; i < count; ++i)
     {
@@ -1876,12 +1877,12 @@ static HRESULT d3dcompiler_shader_reflection_init(struct d3dcompiler_shader_refl

for (i = 0; i < src_dxbc.count; ++i)
     {
-        struct dxbc_section *section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];

switch (section->tag)
         {
             case TAG_RDEF:
-                hr = d3dcompiler_parse_rdef(reflection, section->data, section->data_size);
+                hr = d3dcompiler_parse_rdef(reflection, section->data.code, section->data.size);
                 if (FAILED(hr))
                 {
                     WARN("Failed to parse RDEF section.\n");
@@ -1943,7 +1944,7 @@ static HRESULT d3dcompiler_shader_reflection_init(struct d3dcompiler_shader_refl

case TAG_SHEX:
             case TAG_SHDR:
-                hr = d3dcompiler_parse_shdr(reflection, section->data, section->data_size);
+                hr = d3dcompiler_parse_shdr(reflection, section->data.code, section->data.size);
                 if (FAILED(hr))
                 {
                     WARN("Failed to parse SHDR section.\n");
@@ -1952,7 +1953,7 @@ static HRESULT d3dcompiler_shader_reflection_init(struct d3dcompiler_shader_refl
                 break;

case TAG_STAT:
-                hr = d3dcompiler_parse_stat(reflection, section->data, section->data_size);
+                hr = d3dcompiler_parse_stat(reflection, section->data.code, section->data.size);
                 if (FAILED(hr))
                 {
                     WARN("Failed to parse section STAT.\n");
diff --git a/dlls/d3dcompiler_43/utils.c b/dlls/d3dcompiler_43/utils.c
index 9a6be8db923..9a8bdaccb1b 100644
--- a/dlls/d3dcompiler_43/utils.c
+++ b/dlls/d3dcompiler_43/utils.c
@@ -538,7 +538,7 @@ HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t

if (dxbc->count >= dxbc->size)
     {
-        struct dxbc_section *new_sections;
+        struct vkd3d_shader_dxbc_section_desc *new_sections;
         DWORD new_size = dxbc->size << 1;

new_sections = HeapReAlloc(GetProcessHeap(), 0, dxbc->sections, new_size * sizeof(*dxbc->sections));
@@ -553,8 +553,8 @@ HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t
     }

dxbc->sections[dxbc->count].tag = tag;
-    dxbc->sections[dxbc->count].data_size = data_size;
-    dxbc->sections[dxbc->count].data = data;
+    dxbc->sections[dxbc->count].data.size = data_size;
+    dxbc->sections[dxbc->count].data.code = data;
     ++dxbc->count;

return S_OK;
@@ -670,7 +670,7 @@ HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob)

for (i = 0; i < dxbc->count; ++i)
     {
-        size += 12 + dxbc->sections[i].data_size;
+        size += 12 + dxbc->sections[i].data.size;
     }

hr = D3DCreateBlob(size, &object);
@@ -703,16 +703,16 @@ HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob)
     for (i = 0; i < dxbc->count; ++i)
     {
         write_u32(&ptr, offset);
-        offset += 8 + dxbc->sections[i].data_size;
+        offset += 8 + dxbc->sections[i].data.size;
     }

/* write the chunks */
     for (i = 0; i < dxbc->count; ++i)
     {
         write_u32(&ptr, dxbc->sections[i].tag);
-        write_u32(&ptr, dxbc->sections[i].data_size);
-        memcpy(ptr, dxbc->sections[i].data, dxbc->sections[i].data_size);
-        ptr += dxbc->sections[i].data_size;
+        write_u32(&ptr, dxbc->sections[i].data.size);
+        memcpy(ptr, dxbc->sections[i].data.code, dxbc->sections[i].data.size);
+        ptr += dxbc->sections[i].data.size;
     }

TRACE("Created ID3DBlob %p\n", object);

[PATCH v3 2/6] d3dcompiler: Use vkd3d_shader_serialize_dxbc() in d3dcompiler_get_blob_part().

[Henri Verbeet]

From: Henri Verbeet

---
 dlls/d3d10/Makefile.in     |  2 +-
 dlls/d3dcompiler_43/blob.c | 85 +++++++++++++++++---------------------
 dlls/wined3d/wined3d.spec  |  1 +
 3 files changed, 40 insertions(+), 48 deletions(-)

diff --git a/dlls/d3d10/Makefile.in b/dlls/d3d10/Makefile.in
index df46aa3dff4..ed0e52def19 100644
--- a/dlls/d3d10/Makefile.in
+++ b/dlls/d3d10/Makefile.in
@@ -1,6 +1,6 @@
 MODULE    = d3d10.dll
 IMPORTLIB = d3d10
-IMPORTS   = uuid d3d10core d3dcompiler dxgi
+IMPORTS   = uuid d3d10core d3dcompiler dxgi wined3d
 EXTRADEFS = -DD3D_COMPILER_VERSION=0
 PARENTSRC = ../d3dcompiler_43
 EXTRAINCL = $(VKD3D_PE_CFLAGS)
diff --git a/dlls/d3dcompiler_43/blob.c b/dlls/d3dcompiler_43/blob.c
index 216c2794f20..765ab070890 100644
--- a/dlls/d3dcompiler_43/blob.c
+++ b/dlls/d3dcompiler_43/blob.c
@@ -216,9 +216,12 @@ static BOOL check_blob_part(DWORD tag, D3D_BLOB_PART part)

static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D_BLOB_PART part, UINT flags, ID3DBlob **blob)
 {
-    struct dxbc src_dxbc, dst_dxbc;
+    struct vkd3d_shader_dxbc_section_desc *sections;
+    struct vkd3d_shader_code dst_dxbc;
+    unsigned int section_count, i;
+    struct dxbc src_dxbc;
     HRESULT hr;
-    unsigned int i, count;
+    int ret;

if (!data || !data_size || flags || !blob)
     {
@@ -240,33 +243,21 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
         return hr;
     }

-    hr = dxbc_init(&dst_dxbc, 0);
-    if (FAILED(hr))
+    if (!(sections = calloc(src_dxbc.count, sizeof(*sections))))
     {
+        ERR("Failed to allocate sections memory.\n");
         dxbc_destroy(&src_dxbc);
-        WARN("Failed to init dxbc\n");
-        return hr;
+        return E_OUTOFMEMORY;
     }

-    for (i = 0; i < src_dxbc.count; ++i)
+    for (i = 0, section_count = 0; i < src_dxbc.count; ++i)
     {
-        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc.sections[i];

-        if (check_blob_part(section->tag, part))
-        {
-            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data.code, section->data.size);
-            if (FAILED(hr))
-            {
-                dxbc_destroy(&src_dxbc);
-                dxbc_destroy(&dst_dxbc);
-                WARN("Failed to add section to dxbc\n");
-                return hr;
-            }
-        }
+        if (check_blob_part(src_section->tag, part))
+            sections[section_count++] = *src_section;
     }

-    count = dst_dxbc.count;
-
     switch(part)
     {
         case D3D_BLOB_INPUT_SIGNATURE_BLOB:
@@ -276,15 +267,18 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
         case D3D_BLOB_LEGACY_SHADER:
         case D3D_BLOB_XNA_PREPASS_SHADER:
         case D3D_BLOB_XNA_SHADER:
-            if (count != 1) count = 0;
+            if (section_count != 1)
+                section_count = 0;
             break;

case D3D_BLOB_INPUT_AND_OUTPUT_SIGNATURE_BLOB:
-            if (count != 2) count = 0;
+            if (section_count != 2)
+                section_count = 0;
             break;

case D3D_BLOB_ALL_SIGNATURE_BLOB:
-            if (count != 3) count = 0;
+            if (section_count != 3)
+                section_count = 0;
             break;

default:
@@ -292,39 +286,36 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
             break;
     }

-    if (count == 0)
+    if (!section_count)
     {
-        dxbc_destroy(&src_dxbc);
-        dxbc_destroy(&dst_dxbc);
-        WARN("Nothing to write into the blob (count = 0)\n");
-        return E_FAIL;
+        WARN("Nothing to write into the blob.\n");
+        hr = E_FAIL;
+        goto done;
     }

/* some parts aren't full DXBCs, they contain only the data */
-    if (count == 1 && (part == D3D_BLOB_DEBUG_INFO || part == D3D_BLOB_LEGACY_SHADER || part == D3D_BLOB_XNA_PREPASS_SHADER
-            || part == D3D_BLOB_XNA_SHADER))
+    if (section_count == 1 && (part == D3D_BLOB_DEBUG_INFO || part == D3D_BLOB_LEGACY_SHADER
+            || part == D3D_BLOB_XNA_PREPASS_SHADER || part == D3D_BLOB_XNA_SHADER))
     {
-        hr = D3DCreateBlob(dst_dxbc.sections[0].data.size, blob);
-        if (SUCCEEDED(hr))
-        {
-            memcpy(ID3D10Blob_GetBufferPointer(*blob), dst_dxbc.sections[0].data.code, dst_dxbc.sections[0].data.size);
-        }
-        else
-        {
-            WARN("Could not create blob\n");
-        }
+        dst_dxbc = sections[0].data;
     }
-    else
+    else if ((ret = vkd3d_shader_serialize_dxbc(section_count, sections, &dst_dxbc, NULL) < 0))
     {
-        hr = dxbc_write_blob(&dst_dxbc, blob);
-        if (FAILED(hr))
-        {
-            WARN("Failed to write blob part\n");
-        }
+        WARN("Failed to serialise DXBC, ret %d.\n", ret);
+        hr = E_FAIL;
+        goto done;
     }

+    if (FAILED(hr = D3DCreateBlob(dst_dxbc.size, blob)))
+        WARN("Failed to create blob, hr %#lx.\n", hr);
+    else
+        memcpy(ID3D10Blob_GetBufferPointer(*blob), dst_dxbc.code, dst_dxbc.size);
+    if (dst_dxbc.code != sections[0].data.code)
+        vkd3d_shader_free_shader_code(&dst_dxbc);
+
+done:
+    free(sections);
     dxbc_destroy(&src_dxbc);
-    dxbc_destroy(&dst_dxbc);

return hr;
 }
diff --git a/dlls/wined3d/wined3d.spec b/dlls/wined3d/wined3d.spec
index 8560c1a1bb6..4838f105872 100644
--- a/dlls/wined3d/wined3d.spec
+++ b/dlls/wined3d/wined3d.spec
@@ -359,4 +359,5 @@
 @ cdecl vkd3d_shader_parse_root_signature(ptr ptr ptr)
 @ cdecl vkd3d_shader_preprocess(ptr ptr ptr)
 @ cdecl vkd3d_shader_scan(ptr ptr)
+@ cdecl vkd3d_shader_serialize_dxbc(long ptr ptr ptr)
 @ cdecl vkd3d_shader_serialize_root_signature(ptr ptr ptr)

[PATCH v3 3/6] d3dcompiler: Use vkd3d_shader_serialize_dxbc() in d3dcompiler_strip_shader().

[Henri Verbeet]

From: Henri Verbeet

Note that this adds a todo_wine to test_get_blob_part2(). It looks like native
d3dcompiler only adds padding between sections, while vkd3d-shader always adds
padding to the end of sections. I've sent a vkd3d-shader patch to fix that,
but the extra padding at the end of the DXBC blob doesn't seem terribly
concerning.
---
 dlls/d3dcompiler_43/blob.c                | 49 ++++++++--------
 dlls/d3dcompiler_43/d3dcompiler_private.h |  7 ---
 dlls/d3dcompiler_43/tests/blob.c          |  2 +-
 dlls/d3dcompiler_43/utils.c               | 70 -----------------------
 4 files changed, 26 insertions(+), 102 deletions(-)

diff --git a/dlls/d3dcompiler_43/blob.c b/dlls/d3dcompiler_43/blob.c
index 765ab070890..2ac087b6815 100644
--- a/dlls/d3dcompiler_43/blob.c
+++ b/dlls/d3dcompiler_43/blob.c
@@ -348,9 +348,12 @@ static BOOL check_blob_strip(DWORD tag, UINT flags)

static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT flags, ID3DBlob **blob)
 {
-    struct dxbc src_dxbc, dst_dxbc;
+    struct vkd3d_shader_dxbc_section_desc *sections;
+    struct vkd3d_shader_code dst_dxbc;
+    unsigned int section_count, i;
+    struct dxbc src_dxbc;
     HRESULT hr;
-    unsigned int i;
+    int ret;

if (!blob)
     {
@@ -372,39 +375,37 @@ static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT
     }

/* src_dxbc.count >= dst_dxbc.count */
-    hr = dxbc_init(&dst_dxbc, src_dxbc.count);
-    if (FAILED(hr))
+    if (!(sections = calloc(src_dxbc.count, sizeof(*sections))))
     {
+        ERR("Failed to allocate sections memory.\n");
         dxbc_destroy(&src_dxbc);
-        WARN("Failed to init dxbc\n");
-        return hr;
+        return E_OUTOFMEMORY;
     }

-    for (i = 0; i < src_dxbc.count; ++i)
+    for (i = 0, section_count = 0; i < src_dxbc.count; ++i)
     {
-        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];
-
-        if (check_blob_strip(section->tag, flags))
-        {
-            hr = dxbc_add_section(&dst_dxbc, section->tag, section->data.code, section->data.size);
-            if (FAILED(hr))
-            {
-                dxbc_destroy(&src_dxbc);
-                dxbc_destroy(&dst_dxbc);
-                WARN("Failed to add section to dxbc\n");
-                return hr;
-            }
-        }
+        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc.sections[i];
+
+        if (check_blob_strip(src_section->tag, flags))
+            sections[section_count++] = *src_section;
     }

-    hr = dxbc_write_blob(&dst_dxbc, blob);
-    if (FAILED(hr))
+    if ((ret = vkd3d_shader_serialize_dxbc(section_count, sections, &dst_dxbc, NULL) < 0))
     {
-        WARN("Failed to write blob part\n");
+        WARN("Failed to serialise DXBC, ret %d.\n", ret);
+        hr = E_FAIL;
+        goto done;
     }

+    if (FAILED(hr = D3DCreateBlob(dst_dxbc.size, blob)))
+        WARN("Failed to create blob, hr %#lx.\n", hr);
+    else
+        memcpy(ID3D10Blob_GetBufferPointer(*blob), dst_dxbc.code, dst_dxbc.size);
+    vkd3d_shader_free_shader_code(&dst_dxbc);
+
+done:
+    free(sections);
     dxbc_destroy(&src_dxbc);
-    dxbc_destroy(&dst_dxbc);

return hr;
 }
diff --git a/dlls/d3dcompiler_43/d3dcompiler_private.h b/dlls/d3dcompiler_43/d3dcompiler_private.h
index 0f4cd658ac5..00e76751e0f 100644
--- a/dlls/d3dcompiler_43/d3dcompiler_private.h
+++ b/dlls/d3dcompiler_43/d3dcompiler_private.h
@@ -558,16 +558,9 @@ struct dxbc
     struct vkd3d_shader_dxbc_section_desc *sections;
 };

-HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob) DECLSPEC_HIDDEN;
 void dxbc_destroy(struct dxbc *dxbc) DECLSPEC_HIDDEN;
 HRESULT dxbc_parse(const char *data, SIZE_T data_size, struct dxbc *dxbc) DECLSPEC_HIDDEN;
 HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t data_size) DECLSPEC_HIDDEN;
 HRESULT dxbc_init(struct dxbc *dxbc, unsigned int size) DECLSPEC_HIDDEN;

-static inline void write_u32(char **ptr, uint32_t u32)
-{
-    memcpy(*ptr, &u32, sizeof(u32));
-    *ptr += sizeof(u32);
-}
-
 #endif /* __WINE_D3DCOMPILER_PRIVATE_H */
diff --git a/dlls/d3dcompiler_43/tests/blob.c b/dlls/d3dcompiler_43/tests/blob.c
index 90e4ef3d7da..63e045bd06c 100644
--- a/dlls/d3dcompiler_43/tests/blob.c
+++ b/dlls/d3dcompiler_43/tests/blob.c
@@ -747,7 +747,7 @@ static void test_get_blob_part2(void)
     ok(hr == S_OK, "Got unexpected hr %#lx.\n", hr);

size = ID3D10Blob_GetBufferSize(blob);
-    ok(size == 4735, "Got unexpected size %Iu.\n", size);
+    todo_wine ok(size == 4735, "Got unexpected size %Iu.\n", size);

dword = ((DWORD*)ID3D10Blob_GetBufferPointer(blob));
     ok(TAG_DXBC == *dword, "DXBC got %#lx, expected %#lx.\n", *dword, TAG_DXBC);
diff --git a/dlls/d3dcompiler_43/utils.c b/dlls/d3dcompiler_43/utils.c
index 9a8bdaccb1b..7a5a6bbcd61 100644
--- a/dlls/d3dcompiler_43/utils.c
+++ b/dlls/d3dcompiler_43/utils.c
@@ -526,12 +526,6 @@ void skip_u32_unknown(const char **ptr, unsigned int count)
     }
 }

-static void write_u32_unknown(char **ptr, uint32_t u32)
-{
-    FIXME("Writing unknown u32 0x%08x.\n", u32);
-    write_u32(ptr, u32);
-}
-
 HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t data_size)
 {
     TRACE("dxbc %p, tag %s, size %#Ix.\n", dxbc, debugstr_an((const char *)&tag, 4), data_size);
@@ -658,70 +652,6 @@ void dxbc_destroy(struct dxbc *dxbc)
     HeapFree(GetProcessHeap(), 0, dxbc->sections);
 }

-HRESULT dxbc_write_blob(struct dxbc *dxbc, ID3DBlob **blob)
-{
-    DWORD size = 32, offset = size + 4 * dxbc->count;
-    ID3DBlob *object;
-    HRESULT hr;
-    char *ptr;
-    unsigned int i;
-
-    TRACE("dxbc %p, blob %p.\n", dxbc, blob);
-
-    for (i = 0; i < dxbc->count; ++i)
-    {
-        size += 12 + dxbc->sections[i].data.size;
-    }
-
-    hr = D3DCreateBlob(size, &object);
-    if (FAILED(hr))
-    {
-        WARN("Failed to create blob\n");
-        return hr;
-    }
-
-    ptr = ID3D10Blob_GetBufferPointer(object);
-
-    write_u32(&ptr, TAG_DXBC);
-
-    /* signature(?) */
-    write_u32_unknown(&ptr, 0);
-    write_u32_unknown(&ptr, 0);
-    write_u32_unknown(&ptr, 0);
-    write_u32_unknown(&ptr, 0);
-
-    /* seems to be always 1 */
-    write_u32_unknown(&ptr, 1);
-
-    /* DXBC size */
-    write_u32(&ptr, size);
-
-    /* chunk count */
-    write_u32(&ptr, dxbc->count);
-
-    /* write the chunk offsets */
-    for (i = 0; i < dxbc->count; ++i)
-    {
-        write_u32(&ptr, offset);
-        offset += 8 + dxbc->sections[i].data.size;
-    }
-
-    /* write the chunks */
-    for (i = 0; i < dxbc->count; ++i)
-    {
-        write_u32(&ptr, dxbc->sections[i].tag);
-        write_u32(&ptr, dxbc->sections[i].data.size);
-        memcpy(ptr, dxbc->sections[i].data.code, dxbc->sections[i].data.size);
-        ptr += dxbc->sections[i].data.size;
-    }
-
-    TRACE("Created ID3DBlob %p\n", object);
-
-    *blob = object;
-
-    return S_OK;
-}
-
 void compilation_message(struct compilation_messages *msg, const char *fmt, va_list args)
 {
     char* buffer;

[PATCH v3 4/6] d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_get_blob_part().

[Henri Verbeet]

From: Henri Verbeet

---
 dlls/d3dcompiler_43/blob.c                | 24 +++++++++++------------
 dlls/d3dcompiler_43/d3dcompiler_private.h |  2 ++
 dlls/wined3d/wined3d.spec                 |  2 ++
 3 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/dlls/d3dcompiler_43/blob.c b/dlls/d3dcompiler_43/blob.c
index 2ac087b6815..593b2dcb4e2 100644
--- a/dlls/d3dcompiler_43/blob.c
+++ b/dlls/d3dcompiler_43/blob.c
@@ -216,14 +216,15 @@ static BOOL check_blob_part(DWORD tag, D3D_BLOB_PART part)

static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D_BLOB_PART part, UINT flags, ID3DBlob **blob)
 {
+    const struct vkd3d_shader_code src_dxbc = {.code = data, .size = data_size};
     struct vkd3d_shader_dxbc_section_desc *sections;
+    struct vkd3d_shader_dxbc_desc src_dxbc_desc;
     struct vkd3d_shader_code dst_dxbc;
     unsigned int section_count, i;
-    struct dxbc src_dxbc;
     HRESULT hr;
     int ret;

-    if (!data || !data_size || flags || !blob)
+    if (!data || data_size < DXBC_HEADER_SIZE || flags || !blob)
     {
         WARN("Invalid arguments: data %p, data_size %Iu, flags %#x, blob %p.\n", data, data_size, flags, blob);
         return D3DERR_INVALIDCALL;
@@ -236,23 +237,22 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
         return D3DERR_INVALIDCALL;
     }

-    hr = dxbc_parse(data, data_size, &src_dxbc);
-    if (FAILED(hr))
+    if ((ret = vkd3d_shader_parse_dxbc(&src_dxbc, 0, &src_dxbc_desc, NULL)) < 0)
     {
-        WARN("Failed to parse blob part\n");
-        return hr;
+        WARN("Failed to parse source data, ret %d.\n", ret);
+        return E_FAIL;
     }

-    if (!(sections = calloc(src_dxbc.count, sizeof(*sections))))
+    if (!(sections = calloc(src_dxbc_desc.section_count, sizeof(*sections))))
     {
         ERR("Failed to allocate sections memory.\n");
-        dxbc_destroy(&src_dxbc);
+        vkd3d_shader_free_dxbc(&src_dxbc_desc);
         return E_OUTOFMEMORY;
     }

-    for (i = 0, section_count = 0; i < src_dxbc.count; ++i)
+    for (i = 0, section_count = 0; i < src_dxbc_desc.section_count; ++i)
     {
-        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc_desc.sections[i];

if (check_blob_part(src_section->tag, part))
             sections[section_count++] = *src_section;
@@ -293,7 +293,7 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D
         goto done;
     }

-    /* some parts aren't full DXBCs, they contain only the data */
+    /* some parts aren't full DXBCs, they contain only the data. */
     if (section_count == 1 && (part == D3D_BLOB_DEBUG_INFO || part == D3D_BLOB_LEGACY_SHADER
             || part == D3D_BLOB_XNA_PREPASS_SHADER || part == D3D_BLOB_XNA_SHADER))
     {
@@ -315,7 +315,7 @@ static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D

done:
     free(sections);
-    dxbc_destroy(&src_dxbc);
+    vkd3d_shader_free_dxbc(&src_dxbc_desc);

return hr;
 }
diff --git a/dlls/d3dcompiler_43/d3dcompiler_private.h b/dlls/d3dcompiler_43/d3dcompiler_private.h
index 00e76751e0f..59eaec5cf9a 100644
--- a/dlls/d3dcompiler_43/d3dcompiler_private.h
+++ b/dlls/d3dcompiler_43/d3dcompiler_private.h
@@ -534,6 +534,8 @@ struct bwriter_shader *SlAssembleShader(const char *text, char **messages) DECLS
 HRESULT shader_write_bytecode(const struct bwriter_shader *shader, uint32_t **result, uint32_t *size) DECLSPEC_HIDDEN;
 void SlDeleteShader(struct bwriter_shader *shader) DECLSPEC_HIDDEN;

+#define DXBC_HEADER_SIZE (8 * sizeof(uint32_t))
+
 #define MAKE_TAG(ch0, ch1, ch2, ch3) \
     ((DWORD)(ch0) | ((DWORD)(ch1) << 8) | \
     ((DWORD)(ch2) << 16) | ((DWORD)(ch3) << 24 ))
diff --git a/dlls/wined3d/wined3d.spec b/dlls/wined3d/wined3d.spec
index 4838f105872..5a406377bf5 100644
--- a/dlls/wined3d/wined3d.spec
+++ b/dlls/wined3d/wined3d.spec
@@ -347,6 +347,7 @@
 @ cdecl vkd3d_shader_compile(ptr ptr ptr)
 @ cdecl vkd3d_shader_convert_root_signature(ptr long ptr)
 @ cdecl vkd3d_shader_find_signature_element(ptr ptr long long)
+@ cdecl vkd3d_shader_free_dxbc(ptr)
 @ cdecl vkd3d_shader_free_messages(ptr)
 @ cdecl vkd3d_shader_free_root_signature(ptr)
 @ cdecl vkd3d_shader_free_scan_descriptor_info(ptr)
@@ -355,6 +356,7 @@
 @ cdecl vkd3d_shader_get_supported_source_types(ptr)
 @ cdecl vkd3d_shader_get_supported_target_types(long ptr)
 @ cdecl vkd3d_shader_get_version(ptr ptr)
+@ cdecl vkd3d_shader_parse_dxbc(ptr long ptr ptr)
 @ cdecl vkd3d_shader_parse_input_signature(ptr ptr ptr)
 @ cdecl vkd3d_shader_parse_root_signature(ptr ptr ptr)
 @ cdecl vkd3d_shader_preprocess(ptr ptr ptr)

[PATCH v3 5/6] d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_strip_shader().

[Henri Verbeet]

From: Henri Verbeet

---
 dlls/d3dcompiler_43/blob.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/dlls/d3dcompiler_43/blob.c b/dlls/d3dcompiler_43/blob.c
index 593b2dcb4e2..5e799ede52e 100644
--- a/dlls/d3dcompiler_43/blob.c
+++ b/dlls/d3dcompiler_43/blob.c
@@ -348,10 +348,11 @@ static BOOL check_blob_strip(DWORD tag, UINT flags)

static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT flags, ID3DBlob **blob)
 {
+    const struct vkd3d_shader_code src_dxbc = {.code = data, .size = data_size};
     struct vkd3d_shader_dxbc_section_desc *sections;
+    struct vkd3d_shader_dxbc_desc src_dxbc_desc;
     struct vkd3d_shader_code dst_dxbc;
     unsigned int section_count, i;
-    struct dxbc src_dxbc;
     HRESULT hr;
     int ret;

@@ -361,30 +362,29 @@ static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT
         return E_FAIL;
     }

-    if (!data || !data_size)
+    if (!data || !data_size || data_size < DXBC_HEADER_SIZE)
     {
         WARN("Invalid arguments: data %p, data_size %Iu.\n", data, data_size);
         return D3DERR_INVALIDCALL;
     }

-    hr = dxbc_parse(data, data_size, &src_dxbc);
-    if (FAILED(hr))
+    if ((ret = vkd3d_shader_parse_dxbc(&src_dxbc, 0, &src_dxbc_desc, NULL)) < 0)
     {
-        WARN("Failed to parse blob part\n");
-        return hr;
+        WARN("Failed to parse source data, ret %d.\n", ret);
+        return E_FAIL;
     }

/* src_dxbc.count >= dst_dxbc.count */
-    if (!(sections = calloc(src_dxbc.count, sizeof(*sections))))
+    if (!(sections = calloc(src_dxbc_desc.section_count, sizeof(*sections))))
     {
         ERR("Failed to allocate sections memory.\n");
-        dxbc_destroy(&src_dxbc);
+        vkd3d_shader_free_dxbc(&src_dxbc_desc);
         return E_OUTOFMEMORY;
     }

-    for (i = 0, section_count = 0; i < src_dxbc.count; ++i)
+    for (i = 0, section_count = 0; i < src_dxbc_desc.section_count; ++i)
     {
-        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *src_section = &src_dxbc_desc.sections[i];

if (check_blob_strip(src_section->tag, flags))
             sections[section_count++] = *src_section;
@@ -405,7 +405,7 @@ static HRESULT d3dcompiler_strip_shader(const void *data, SIZE_T data_size, UINT

done:
     free(sections);
-    dxbc_destroy(&src_dxbc);
+    vkd3d_shader_free_dxbc(&src_dxbc_desc);

return hr;
 }

[PATCH v3 6/6] d3dcompiler: Use vkd3d_shader_parse_dxbc() in d3dcompiler_shader_reflection_init().

[Henri Verbeet]

From: Henri Verbeet

---
 dlls/d3dcompiler_43/d3dcompiler_private.h |  12 ---
 dlls/d3dcompiler_43/reflection.c          |  21 ++--
 dlls/d3dcompiler_43/utils.c               | 126 ----------------------
 3 files changed, 11 insertions(+), 148 deletions(-)

diff --git a/dlls/d3dcompiler_43/d3dcompiler_private.h b/dlls/d3dcompiler_43/d3dcompiler_private.h
index 59eaec5cf9a..12db34891e0 100644
--- a/dlls/d3dcompiler_43/d3dcompiler_private.h
+++ b/dlls/d3dcompiler_43/d3dcompiler_private.h
@@ -553,16 +553,4 @@ void SlDeleteShader(struct bwriter_shader *shader) DECLSPEC_HIDDEN;
 #define TAG_XNAP MAKE_TAG('X', 'N', 'A', 'P')
 #define TAG_XNAS MAKE_TAG('X', 'N', 'A', 'S')

-struct dxbc
-{
-    UINT size;
-    UINT count;
-    struct vkd3d_shader_dxbc_section_desc *sections;
-};
-
-void dxbc_destroy(struct dxbc *dxbc) DECLSPEC_HIDDEN;
-HRESULT dxbc_parse(const char *data, SIZE_T data_size, struct dxbc *dxbc) DECLSPEC_HIDDEN;
-HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t data_size) DECLSPEC_HIDDEN;
-HRESULT dxbc_init(struct dxbc *dxbc, unsigned int size) DECLSPEC_HIDDEN;
-
 #endif /* __WINE_D3DCOMPILER_PRIVATE_H */
diff --git a/dlls/d3dcompiler_43/reflection.c b/dlls/d3dcompiler_43/reflection.c
index b83ede073cd..e4080da8c21 100644
--- a/dlls/d3dcompiler_43/reflection.c
+++ b/dlls/d3dcompiler_43/reflection.c
@@ -1862,22 +1862,23 @@ static HRESULT d3dcompiler_parse_shdr(struct d3dcompiler_shader_reflection *r, c
 static HRESULT d3dcompiler_shader_reflection_init(struct d3dcompiler_shader_reflection *reflection,
         const void *data, SIZE_T data_size)
 {
-    struct dxbc src_dxbc;
-    HRESULT hr;
+    const struct vkd3d_shader_code src_dxbc = {.code = data, .size = data_size};
+    struct vkd3d_shader_dxbc_desc src_dxbc_desc;
+    HRESULT hr = S_OK;
     unsigned int i;
+    int ret;

wine_rb_init(&reflection->types, d3dcompiler_shader_reflection_type_compare);

-    hr = dxbc_parse(data, data_size, &src_dxbc);
-    if (FAILED(hr))
+    if ((ret = vkd3d_shader_parse_dxbc(&src_dxbc, 0, &src_dxbc_desc, NULL)) < 0)
     {
-        WARN("Failed to parse reflection\n");
-        return hr;
+        WARN("Failed to parse reflection, ret %d.\n", ret);
+        return E_FAIL;
     }

-    for (i = 0; i < src_dxbc.count; ++i)
+    for (i = 0; i < src_dxbc_desc.section_count; ++i)
     {
-        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc.sections[i];
+        const struct vkd3d_shader_dxbc_section_desc *section = &src_dxbc_desc.sections[i];

switch (section->tag)
         {
@@ -1967,13 +1968,13 @@ static HRESULT d3dcompiler_shader_reflection_init(struct d3dcompiler_shader_refl
         }
     }

-    dxbc_destroy(&src_dxbc);
+    vkd3d_shader_free_dxbc(&src_dxbc_desc);

return hr;

err_out:
     reflection_cleanup(reflection);
-    dxbc_destroy(&src_dxbc);
+    vkd3d_shader_free_dxbc(&src_dxbc_desc);

return hr;
 }
diff --git a/dlls/d3dcompiler_43/utils.c b/dlls/d3dcompiler_43/utils.c
index 7a5a6bbcd61..ceeb41048e2 100644
--- a/dlls/d3dcompiler_43/utils.c
+++ b/dlls/d3dcompiler_43/utils.c
@@ -526,132 +526,6 @@ void skip_u32_unknown(const char **ptr, unsigned int count)
     }
 }

-HRESULT dxbc_add_section(struct dxbc *dxbc, DWORD tag, const char *data, size_t data_size)
-{
-    TRACE("dxbc %p, tag %s, size %#Ix.\n", dxbc, debugstr_an((const char *)&tag, 4), data_size);
-
-    if (dxbc->count >= dxbc->size)
-    {
-        struct vkd3d_shader_dxbc_section_desc *new_sections;
-        DWORD new_size = dxbc->size << 1;
-
-        new_sections = HeapReAlloc(GetProcessHeap(), 0, dxbc->sections, new_size * sizeof(*dxbc->sections));
-        if (!new_sections)
-        {
-            ERR("Failed to allocate dxbc section memory\n");
-            return E_OUTOFMEMORY;
-        }
-
-        dxbc->sections = new_sections;
-        dxbc->size = new_size;
-    }
-
-    dxbc->sections[dxbc->count].tag = tag;
-    dxbc->sections[dxbc->count].data.size = data_size;
-    dxbc->sections[dxbc->count].data.code = data;
-    ++dxbc->count;
-
-    return S_OK;
-}
-
-HRESULT dxbc_init(struct dxbc *dxbc, unsigned int size)
-{
-    TRACE("dxbc %p, size %u.\n", dxbc, size);
-
-    /* use a good starting value for the size if none specified */
-    if (!size) size = 2;
-
-    dxbc->sections = HeapAlloc(GetProcessHeap(), 0, size * sizeof(*dxbc->sections));
-    if (!dxbc->sections)
-    {
-        ERR("Failed to allocate dxbc section memory\n");
-        return E_OUTOFMEMORY;
-    }
-
-    dxbc->size = size;
-    dxbc->count = 0;
-
-    return S_OK;
-}
-
-HRESULT dxbc_parse(const char *data, SIZE_T data_size, struct dxbc *dxbc)
-{
-    uint32_t tag, total_size, chunk_count;
-    const char *ptr = data;
-    unsigned int i;
-    HRESULT hr;
-
-    if (!data)
-    {
-        WARN("No data supplied.\n");
-        return E_FAIL;
-    }
-
-    tag = read_u32(&ptr);
-    TRACE("tag: %s.\n", debugstr_an((const char *)&tag, 4));
-
-    if (tag != TAG_DXBC)
-    {
-        WARN("Wrong tag.\n");
-        return E_FAIL;
-    }
-
-    /* checksum? */
-    skip_u32_unknown(&ptr, 4);
-
-    skip_u32_unknown(&ptr, 1);
-
-    total_size = read_u32(&ptr);
-    TRACE("total size: %#x\n", total_size);
-
-    if (data_size != total_size)
-    {
-        WARN("Wrong size supplied.\n");
-        return D3DERR_INVALIDCALL;
-    }
-
-    chunk_count = read_u32(&ptr);
-    TRACE("chunk count: %#x\n", chunk_count);
-
-    hr = dxbc_init(dxbc, chunk_count);
-    if (FAILED(hr))
-    {
-        WARN("Failed to init dxbc\n");
-        return hr;
-    }
-
-    for (i = 0; i < chunk_count; ++i)
-    {
-        uint32_t chunk_tag, chunk_size;
-        const char *chunk_ptr;
-        uint32_t chunk_offset;
-
-        chunk_offset = read_u32(&ptr);
-        TRACE("chunk %u at offset %#x\n", i, chunk_offset);
-
-        chunk_ptr = data + chunk_offset;
-
-        chunk_tag = read_u32(&chunk_ptr);
-        chunk_size = read_u32(&chunk_ptr);
-
-        hr = dxbc_add_section(dxbc, chunk_tag, chunk_ptr, chunk_size);
-        if (FAILED(hr))
-        {
-            WARN("Failed to add section to dxbc\n");
-            return hr;
-        }
-    }
-
-    return hr;
-}
-
-void dxbc_destroy(struct dxbc *dxbc)
-{
-    TRACE("dxbc %p.\n", dxbc);
-
-    HeapFree(GetProcessHeap(), 0, dxbc->sections);
-}
-
 void compilation_message(struct compilation_messages *msg, const char *fmt, va_list args)
 {
     char* buffer;

[Henri Verbeet (＠hverbeet)]

> I believe this needs configure.ac to be updated to look for the newer API.

Indeed. Should be fixed in v3.

[Matteo Bruni (＠Mystral)]

Matteo Bruni (@Mystral) commented about dlls/d3dcompiler_43/blob.c:
> static HRESULT d3dcompiler_get_blob_part(const void *data, SIZE_T data_size, D3D_BLOB_PART part, UINT flags, ID3DBlob **blob)
>  {
> - const struct vkd3d_shader_code src_dxbc = {.code = data, .size = data_size};
> struct vkd3d_shader_dxbc_section_desc *sections;
> - struct vkd3d_shader_dxbc_desc src_dxbc_desc;
> struct vkd3d_shader_code dst_dxbc;
> unsigned int section_count, i;
> -
>
> struct dxbc src_dxbc;
> HRESULT hr;
> int ret;
> -
>
> if (!data || !data_size || flags || !blob)
> - if (!data || data_size < DXBC_HEADER_SIZE || flags || !blob)

Ideally this would be a separate change with a test to validate its correctness (AFAICS it is correct but there isn't a test already for it).

Given that I wrote it anyway, attaching the test...
[0001-d3dcompiler-tests-Add-a-couple-tests-for-minimum-size-.txt](/uploads/29bc1b149695fe26905967b86b53bd76/0001-d3dcompiler-tests-Add-a-couple-tests-for-minimum-size-.txt)

[Matteo Bruni (＠Mystral)]

Matteo Bruni (@Mystral) commented about dlls/d3dcompiler_43/blob.c:
>      goto done;
>  }
>
> - /* some parts aren't full DXBCs, they contain only the data */
> - /* some parts aren't full DXBCs, they contain only the data. */

Inane nitpick: this change could be moved 2 patches back where nearby code is already being touched.

[Matteo Bruni (＠Mystral)]

Matteo Bruni (@Mystral) commented about dlls/d3dcompiler_43/blob.c:
>      return E_FAIL;
>  }
>
> - if (!data || !data_size)
> - if (!data || !data_size || data_size < DXBC_HEADER_SIZE)

Similar to the previous patch here. Also can get rid of the || !data_size part.

[Matteo Bruni (＠Mystral)]

I especially appreciate the additional "const"s on pointers in the first patch.

I'm not approving the MR right now just to let you give a look at the couple of comments I left, but there isn't anything really blocking.