vkd3d-shader: Output a compiler error message if the DXBC size is invalid.

Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

include/vkd3d_shader.h

@@ -248,6 +248,16 @@ enum vkd3d_shader_target_type
     VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_TARGET_TYPE),
 };
 
+enum vkd3d_shader_log_level
+{
+    VKD3D_SHADER_LOG_NONE,
+    VKD3D_SHADER_LOG_ERROR,
+    VKD3D_SHADER_LOG_WARNING,
+    VKD3D_SHADER_LOG_INFO,
+
+    VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_LOG_LEVEL),
+};
+
 struct vkd3d_shader_compile_info
 {
     enum vkd3d_shader_structure_type type;
@@ -260,6 +270,9 @@ struct vkd3d_shader_compile_info
 
     const struct vkd3d_shader_compile_option *options;
     unsigned int option_count;
+
+    enum vkd3d_shader_log_level log_level;
+    const char *source_name;
 };
 
 enum vkd3d_shader_spirv_environment
@@ -733,7 +746,9 @@ struct vkd3d_shader_signature
 
 #ifndef VKD3D_SHADER_NO_PROTOTYPES
 
-int vkd3d_shader_compile(const struct vkd3d_shader_compile_info *compile_info, struct vkd3d_shader_code *out);
+int vkd3d_shader_compile(const struct vkd3d_shader_compile_info *compile_info,
+        struct vkd3d_shader_code *out, char **messages);
+void vkd3d_shader_free_messages(char *messages);
 void vkd3d_shader_free_shader_code(struct vkd3d_shader_code *code);
 
 int vkd3d_shader_parse_root_signature(const struct vkd3d_shader_code *dxbc,
@@ -748,7 +763,7 @@ int vkd3d_shader_convert_root_signature(struct vkd3d_shader_versioned_root_signa
         enum vkd3d_shader_root_signature_version version, const struct vkd3d_shader_versioned_root_signature_desc *src);
 
 int vkd3d_shader_scan_dxbc(const struct vkd3d_shader_code *dxbc,
-        struct vkd3d_shader_scan_info *scan_info);
+        struct vkd3d_shader_scan_info *scan_info, char **messages);
 void vkd3d_shader_free_scan_info(struct vkd3d_shader_scan_info *scan_info);
 
 int vkd3d_shader_parse_input_signature(const struct vkd3d_shader_code *dxbc,
@@ -764,7 +779,8 @@ void vkd3d_shader_free_shader_signature(struct vkd3d_shader_signature *signature
  * Function pointer typedefs for vkd3d-shader functions.
  */
 typedef int (*PFN_vkd3d_shader_compile)(const struct vkd3d_shader_compile_info *compile_info,
-        struct vkd3d_shader_code *out);
+        struct vkd3d_shader_code *out, char **messages);
+typedef void (*PFN_vkd3d_shader_free_messages)(char *messages);
 typedef void (*PFN_vkd3d_shader_free_shader_code)(struct vkd3d_shader_code *code);
 
 typedef int (*PFN_vkd3d_shader_parse_root_signature)(const struct vkd3d_shader_code *dxbc,
@@ -778,7 +794,7 @@ typedef int (*PFN_vkd3d_shader_convert_root_signature)(struct vkd3d_shader_versi
         enum vkd3d_shader_root_signature_version version, const struct vkd3d_shader_versioned_root_signature_desc *src);
 
 typedef int (*PFN_vkd3d_shader_scan_dxbc)(const struct vkd3d_shader_code *dxbc,
-        struct vkd3d_shader_scan_info *scan_info);
+        struct vkd3d_shader_scan_info *scan_info, char **messages);
 typedef void (*PFN_vkd3d_shader_free_scan_info)(struct vkd3d_shader_scan_info *scan_info);
 
 typedef int (*PFN_vkd3d_shader_parse_input_signature)(const struct vkd3d_shader_code *dxbc,

libs/vkd3d-shader/dxbc.c

@@ -1941,7 +1941,7 @@ static const char *shader_get_string(const char *data, size_t data_size, DWORD o
     return data + offset;
 }
 
-static int parse_dxbc(const char *data, size_t data_size,
+static int parse_dxbc(const char *data, size_t data_size, struct vkd3d_shader_message_context *message_context,
         int (*chunk_handler)(const char *data, DWORD data_size, DWORD tag, void *ctx), void *ctx)
 {
     const char *ptr = data;
@@ -1955,6 +1955,8 @@ static int parse_dxbc(const char *data, size_t data_size,
     if (data_size < VKD3D_DXBC_HEADER_SIZE)
     {
         WARN("Invalid data size %zu.\n", data_size);
+        vkd3d_shader_error(message_context, VKD3D_SHADER_ERROR_DXBC_INVALID_SIZE,
+                "DXBC size %zu is smaller than the DXBC header size.", data_size);
         return VKD3D_ERROR_INVALID_ARGUMENT;
     }
 
@@ -2110,11 +2112,16 @@ static int isgn_handler(const char *data, DWORD data_size, DWORD tag, void *ctx)
 int shader_parse_input_signature(const void *dxbc, size_t dxbc_length,
         struct vkd3d_shader_signature *signature)
 {
+    struct vkd3d_shader_message_context message_context;
     int ret;
 
     memset(signature, 0, sizeof(*signature));
-    if ((ret = parse_dxbc(dxbc, dxbc_length, isgn_handler, signature)) < 0)
+    if (!vkd3d_shader_message_context_init(&message_context, VKD3D_SHADER_LOG_NONE, NULL))
+        return VKD3D_ERROR;
+    if ((ret = parse_dxbc(dxbc, dxbc_length, &message_context, isgn_handler, signature)) < 0)
         ERR("Failed to parse input signature.\n");
+    vkd3d_shader_message_context_cleanup(&message_context);
+
     return ret;
 }
 
@@ -2187,7 +2194,7 @@ void free_shader_desc(struct vkd3d_shader_desc *desc)
 }
 
 int shader_extract_from_dxbc(const void *dxbc, size_t dxbc_length,
-        struct vkd3d_shader_desc *desc)
+        struct vkd3d_shader_message_context *message_context, struct vkd3d_shader_desc *desc)
 {
     int ret;
 
@@ -2197,13 +2204,13 @@ int shader_extract_from_dxbc(const void *dxbc, size_t dxbc_length,
     memset(&desc->output_signature, 0, sizeof(desc->output_signature));
     memset(&desc->patch_constant_signature, 0, sizeof(desc->patch_constant_signature));
 
-    ret = parse_dxbc(dxbc, dxbc_length, shdr_handler, desc);
+    ret = parse_dxbc(dxbc, dxbc_length, message_context, shdr_handler, desc);
     if (!desc->byte_code)
         ret = VKD3D_ERROR_INVALID_ARGUMENT;
 
     if (ret < 0)
     {
-        FIXME("Failed to parse shader, vkd3d result %d.\n", ret);
+        WARN("Failed to parse shader, vkd3d result %d.\n", ret);
         free_shader_desc(desc);
     }
 
@@ -2656,18 +2663,20 @@ static int rts0_handler(const char *data, DWORD data_size, DWORD tag, void *cont
 int vkd3d_shader_parse_root_signature(const struct vkd3d_shader_code *dxbc,
         struct vkd3d_shader_versioned_root_signature_desc *root_signature)
 {
+    struct vkd3d_shader_message_context message_context;
     int ret;
 
     TRACE("dxbc {%p, %zu}, root_signature %p.\n", dxbc->code, dxbc->size, root_signature);
 
     memset(root_signature, 0, sizeof(*root_signature));
-    if ((ret = parse_dxbc(dxbc->code, dxbc->size, rts0_handler, root_signature)) < 0)
+    if (!vkd3d_shader_message_context_init(&message_context, VKD3D_SHADER_LOG_NONE, NULL))
-    {
+        return VKD3D_ERROR;
+    ret = parse_dxbc(dxbc->code, dxbc->size, &message_context, rts0_handler, root_signature);
+    vkd3d_shader_message_context_cleanup(&message_context);
+    if (ret < 0)
         vkd3d_shader_free_root_signature(root_signature);
-        return ret;
-    }
 
-    return VKD3D_OK;
+    return ret;
 }
 
 static unsigned int versioned_root_signature_get_parameter_count(

libs/vkd3d-shader/trace.c

@@ -26,14 +26,6 @@
 
 #include <stdio.h>
 
-struct vkd3d_string_buffer
-{
-    struct list entry;
-    char *buffer;
-    unsigned int buffer_size;
-    unsigned int content_size;
-};
-
 static const char * const shader_opcode_names[] =
 {
     /* VKD3DSIH_ABS                              */ "abs",
@@ -308,77 +300,16 @@ shader_input_sysval_semantic_names[] =
     {VKD3D_SIV_LINE_DENSITY_TESS_FACTOR,   "finalLineDensityTessFactor"},
 };
 
-static void string_buffer_clear(struct vkd3d_string_buffer *buffer)
+static int VKD3D_PRINTF_FUNC(2, 3) shader_addline(struct vkd3d_string_buffer *buffer, const char *format, ...)
-{
-    buffer->buffer[0] = '\0';
-    buffer->content_size = 0;
-}
-
-static bool string_buffer_init(struct vkd3d_string_buffer *buffer)
-{
-    buffer->buffer_size = 32;
-    if (!(buffer->buffer = vkd3d_malloc(buffer->buffer_size)))
-    {
-        ERR("Failed to allocate shader buffer memory.\n");
-        return false;
-    }
-
-    string_buffer_clear(buffer);
-    return true;
-}
-
-static void string_buffer_free(struct vkd3d_string_buffer *buffer)
-{
-    vkd3d_free(buffer->buffer);
-}
-
-static bool string_buffer_resize(struct vkd3d_string_buffer *buffer, int rc)
-{
-    unsigned int new_buffer_size = buffer->buffer_size * 2;
-    char *new_buffer;
-
-    while (rc > 0 && (unsigned int)rc >= new_buffer_size - buffer->content_size)
-        new_buffer_size *= 2;
-    if (!(new_buffer = vkd3d_realloc(buffer->buffer, new_buffer_size)))
-    {
-        ERR("Failed to grow buffer.\n");
-        buffer->buffer[buffer->content_size] = '\0';
-        return false;
-    }
-    buffer->buffer = new_buffer;
-    buffer->buffer_size = new_buffer_size;
-    return true;
-}
-
-static int shader_vaddline(struct vkd3d_string_buffer *buffer, const char *format, va_list args)
-{
-    unsigned int rem;
-    int rc;
-
-    rem = buffer->buffer_size - buffer->content_size;
-    rc = vsnprintf(&buffer->buffer[buffer->content_size], rem, format, args);
-    if (rc < 0 || (unsigned int)rc >= rem)
-        return rc;
-
-    buffer->content_size += rc;
-    return 0;
-}
-
-static int shader_addline(struct vkd3d_string_buffer *buffer, const char *format, ...)
 {
     va_list args;
     int ret;
 
-    for (;;)
-    {
     va_start(args, format);
-        ret = shader_vaddline(buffer, format, args);
+    ret = vkd3d_string_buffer_vprintf(buffer, format, args);
     va_end(args);
-        if (!ret)
+
     return ret;
-        if (!string_buffer_resize(buffer, ret))
-            return -1;
-    }
 }
 
 /* Convert floating point offset relative to a register file to an absolute
@@ -1617,7 +1548,7 @@ void vkd3d_shader_trace(void *data)
     const char *p, *q;
     const DWORD *ptr;
 
-    if (!string_buffer_init(&buffer))
+    if (!vkd3d_string_buffer_init(&buffer))
     {
         ERR("Failed to initialize string buffer.\n");
         return;
@@ -1651,5 +1582,5 @@ void vkd3d_shader_trace(void *data)
         TRACE("    %.*s", (int)(q - p), p);
     }
 
-    string_buffer_free(&buffer);
+    vkd3d_string_buffer_cleanup(&buffer);
 }

libs/vkd3d-shader/vkd3d_shader.map

@@ -4,6 +4,7 @@ global:
     vkd3d_shader_compile;
     vkd3d_shader_convert_root_signature;
     vkd3d_shader_find_signature_element;
+    vkd3d_shader_free_messages;
     vkd3d_shader_free_root_signature;
     vkd3d_shader_free_scan_info;
     vkd3d_shader_free_shader_code;

libs/vkd3d-shader/vkd3d_shader_main.c

@@ -22,6 +22,129 @@
 
 VKD3D_DEBUG_ENV_NAME("VKD3D_SHADER_DEBUG");
 
+static void vkd3d_string_buffer_clear(struct vkd3d_string_buffer *buffer)
+{
+    buffer->buffer[0] = '\0';
+    buffer->content_size = 0;
+}
+
+bool vkd3d_string_buffer_init(struct vkd3d_string_buffer *buffer)
+{
+    buffer->buffer_size = 32;
+    if (!(buffer->buffer = vkd3d_malloc(buffer->buffer_size)))
+    {
+        ERR("Failed to allocate shader buffer memory.\n");
+        return false;
+    }
+
+    vkd3d_string_buffer_clear(buffer);
+    return true;
+}
+
+void vkd3d_string_buffer_cleanup(struct vkd3d_string_buffer *buffer)
+{
+    vkd3d_free(buffer->buffer);
+}
+
+static bool vkd3d_string_buffer_resize(struct vkd3d_string_buffer *buffer, int rc)
+{
+    unsigned int new_buffer_size = buffer->buffer_size * 2;
+    char *new_buffer;
+
+    while (rc > 0 && (unsigned int)rc >= new_buffer_size - buffer->content_size)
+        new_buffer_size *= 2;
+    if (!(new_buffer = vkd3d_realloc(buffer->buffer, new_buffer_size)))
+    {
+        ERR("Failed to grow buffer.\n");
+        buffer->buffer[buffer->content_size] = '\0';
+        return false;
+    }
+    buffer->buffer = new_buffer;
+    buffer->buffer_size = new_buffer_size;
+    return true;
+}
+
+int vkd3d_string_buffer_vprintf(struct vkd3d_string_buffer *buffer, const char *format, va_list args)
+{
+    unsigned int rem;
+    va_list a;
+    int rc;
+
+    for (;;)
+    {
+        rem = buffer->buffer_size - buffer->content_size;
+        va_copy(a, args);
+        rc = vsnprintf(&buffer->buffer[buffer->content_size], rem, format, a);
+        va_end(a);
+        if (rc >= 0 && (unsigned int)rc < rem)
+        {
+            buffer->content_size += rc;
+            return 0;
+        }
+
+        if (!vkd3d_string_buffer_resize(buffer, rc))
+            return -1;
+    }
+}
+
+static int VKD3D_PRINTF_FUNC(2, 3) vkd3d_string_buffer_printf(struct vkd3d_string_buffer *buffer,
+        const char *format, ...)
+{
+    va_list args;
+    int ret;
+
+    va_start(args, format);
+    ret = vkd3d_string_buffer_vprintf(buffer, format, args);
+    va_end(args);
+
+    return ret;
+}
+
+bool vkd3d_shader_message_context_init(struct vkd3d_shader_message_context *context,
+        enum vkd3d_shader_log_level log_level, const char *source_name)
+{
+    context->log_level = log_level;
+    context->source_name = source_name ? source_name : "<anonymous>";
+    context->line = 0;
+    context->column = 0;
+
+    return vkd3d_string_buffer_init(&context->messages);
+}
+
+void vkd3d_shader_message_context_cleanup(struct vkd3d_shader_message_context *context)
+{
+    vkd3d_string_buffer_cleanup(&context->messages);
+}
+
+static char *vkd3d_shader_message_context_copy_messages(struct vkd3d_shader_message_context *context)
+{
+    char *messages;
+
+    if ((messages = vkd3d_malloc(context->messages.content_size)))
+        memcpy(messages, context->messages.buffer, context->messages.content_size);
+
+    return messages;
+}
+
+void vkd3d_shader_error(struct vkd3d_shader_message_context *context,
+        enum vkd3d_shader_error error, const char *format, ...)
+{
+    va_list args;
+
+    if (context->log_level < VKD3D_SHADER_LOG_ERROR)
+        return;
+
+    if (context->line)
+        vkd3d_string_buffer_printf(&context->messages, "%s:%u:%u: E%04u: ",
+                context->source_name, context->line, context->column, error);
+    else
+        vkd3d_string_buffer_printf(&context->messages, "%s: E%04u: ", context->source_name, error);
+    va_start(args, format);
+    vkd3d_string_buffer_vprintf(&context->messages, format, args);
+    va_end(args);
+    vkd3d_string_buffer_printf(&context->messages, "\n");
+}
+
 static void vkd3d_shader_dump_blob(const char *path, const char *prefix, const void *data, size_t size)
 {
     static int shader_id = 0;
@@ -71,12 +194,12 @@ struct vkd3d_shader_parser
 };
 
 static int vkd3d_shader_parser_init(struct vkd3d_shader_parser *parser,
-        const struct vkd3d_shader_code *dxbc)
+        const struct vkd3d_shader_code *dxbc, struct vkd3d_shader_message_context *message_context)
 {
     struct vkd3d_shader_desc *shader_desc = &parser->shader_desc;
     int ret;
 
-    if ((ret = shader_extract_from_dxbc(dxbc->code, dxbc->size, shader_desc)) < 0)
+    if ((ret = shader_extract_from_dxbc(dxbc->code, dxbc->size, message_context, shader_desc)) < 0)
     {
         WARN("Failed to extract shader, vkd3d result %d.\n", ret);
         return ret;
@@ -129,25 +252,45 @@ static int vkd3d_shader_validate_compile_info(const struct vkd3d_shader_compile_
     return VKD3D_OK;
 }
 
-int vkd3d_shader_compile(const struct vkd3d_shader_compile_info *compile_info, struct vkd3d_shader_code *out)
+void vkd3d_shader_free_messages(char *messages)
 {
+    vkd3d_free(messages);
+}
+
+int vkd3d_shader_compile(const struct vkd3d_shader_compile_info *compile_info,
+        struct vkd3d_shader_code *out, char **messages)
+{
+    struct vkd3d_shader_message_context message_context;
     struct vkd3d_shader_instruction instruction;
     struct vkd3d_dxbc_compiler *spirv_compiler;
     struct vkd3d_shader_scan_info scan_info;
     struct vkd3d_shader_parser parser;
     int ret;
 
-    TRACE("compile_info %p, out %p.\n", compile_info, out);
+    TRACE("compile_info %p, out %p, messages %p.\n", compile_info, out, messages);
+
+    if (messages)
+        *messages = NULL;
 
     if ((ret = vkd3d_shader_validate_compile_info(compile_info)) < 0)
         return ret;
 
     scan_info.type = VKD3D_SHADER_STRUCTURE_TYPE_SCAN_INFO;
     scan_info.next = NULL;
-    if ((ret = vkd3d_shader_scan_dxbc(&compile_info->source, &scan_info)) < 0)
+    if ((ret = vkd3d_shader_scan_dxbc(&compile_info->source, &scan_info, messages)) < 0)
         return ret;
 
-    if ((ret = vkd3d_shader_parser_init(&parser, &compile_info->source)) < 0)
+    if (!vkd3d_shader_message_context_init(&message_context, compile_info->log_level, compile_info->source_name))
+        return VKD3D_ERROR;
+    ret = vkd3d_shader_parser_init(&parser, &compile_info->source, &message_context);
+    if (messages)
+    {
+        vkd3d_shader_free_messages(*messages);
+        if (!(*messages = vkd3d_shader_message_context_copy_messages(&message_context)))
+            ret = VKD3D_ERROR_OUT_OF_MEMORY;
+    }
+    vkd3d_shader_message_context_cleanup(&message_context);
+    if (ret < 0)
         return ret;
 
     vkd3d_shader_dump_shader(parser.shader_version.type, &compile_info->source);
@@ -418,14 +561,18 @@ static void vkd3d_shader_scan_instruction(struct vkd3d_shader_scan_context *cont
 }
 
 int vkd3d_shader_scan_dxbc(const struct vkd3d_shader_code *dxbc,
-        struct vkd3d_shader_scan_info *scan_info)
+        struct vkd3d_shader_scan_info *scan_info, char **messages)
 {
+    struct vkd3d_shader_message_context message_context;
     struct vkd3d_shader_instruction instruction;
     struct vkd3d_shader_scan_context context;
     struct vkd3d_shader_parser parser;
     int ret;
 
-    TRACE("dxbc {%p, %zu}, scan_info %p.\n", dxbc->code, dxbc->size, scan_info);
+    TRACE("dxbc {%p, %zu}, scan_info %p, messages %p.\n", dxbc->code, dxbc->size, scan_info, messages);
+
+    if (messages)
+        *messages = NULL;
 
     if (scan_info->type != VKD3D_SHADER_STRUCTURE_TYPE_SCAN_INFO)
     {
@@ -433,7 +580,13 @@ int vkd3d_shader_scan_dxbc(const struct vkd3d_shader_code *dxbc,
         return VKD3D_ERROR_INVALID_ARGUMENT;
     }
 
-    if ((ret = vkd3d_shader_parser_init(&parser, dxbc)) < 0)
+    if (!vkd3d_shader_message_context_init(&message_context, VKD3D_SHADER_LOG_INFO, NULL))
+        return VKD3D_ERROR;
+    ret = vkd3d_shader_parser_init(&parser, dxbc, &message_context);
+    if (messages && !(*messages = vkd3d_shader_message_context_copy_messages(&message_context)))
+        ret = VKD3D_ERROR_OUT_OF_MEMORY;
+    vkd3d_shader_message_context_cleanup(&message_context);
+    if (ret < 0)
         return ret;
 
     memset(scan_info, 0, sizeof(*scan_info));

libs/vkd3d-shader/vkd3d_shader_private.h

@@ -59,6 +59,11 @@
 
 #define VKD3D_VEC4_SIZE 4
 
+enum vkd3d_shader_error
+{
+    VKD3D_SHADER_ERROR_DXBC_INVALID_SIZE         = 1,
+};
+
 enum VKD3D_SHADER_INSTRUCTION_HANDLER
 {
     VKD3DSIH_ABS,
@@ -799,8 +804,33 @@ void shader_sm4_read_instruction(void *data, const DWORD **ptr,
         struct vkd3d_shader_instruction *ins) DECLSPEC_HIDDEN;
 bool shader_sm4_is_end(void *data, const DWORD **ptr) DECLSPEC_HIDDEN;
 
+struct vkd3d_string_buffer
+{
+    char *buffer;
+    unsigned int buffer_size;
+    unsigned int content_size;
+};
+
+void vkd3d_string_buffer_cleanup(struct vkd3d_string_buffer *buffer) DECLSPEC_HIDDEN;
+bool vkd3d_string_buffer_init(struct vkd3d_string_buffer *buffer) DECLSPEC_HIDDEN;
+int vkd3d_string_buffer_vprintf(struct vkd3d_string_buffer *buffer, const char *format, va_list args) DECLSPEC_HIDDEN;
+
+struct vkd3d_shader_message_context
+{
+    enum vkd3d_shader_log_level log_level;
+    const char *source_name;
+    unsigned int line, column;
+    struct vkd3d_string_buffer messages;
+};
+
+void vkd3d_shader_message_context_cleanup(struct vkd3d_shader_message_context *context) DECLSPEC_HIDDEN;
+bool vkd3d_shader_message_context_init(struct vkd3d_shader_message_context *context,
+        enum vkd3d_shader_log_level log_level, const char *source_name) DECLSPEC_HIDDEN;
+void vkd3d_shader_error(struct vkd3d_shader_message_context *context, enum vkd3d_shader_error error,
+        const char *format, ...) VKD3D_PRINTF_FUNC(3, 4) DECLSPEC_HIDDEN;
+
 int shader_extract_from_dxbc(const void *dxbc, size_t dxbc_length,
-        struct vkd3d_shader_desc *desc) DECLSPEC_HIDDEN;
+        struct vkd3d_shader_message_context *message_context, struct vkd3d_shader_desc *desc) DECLSPEC_HIDDEN;
 void free_shader_desc(struct vkd3d_shader_desc *desc) DECLSPEC_HIDDEN;
 
 int shader_parse_input_signature(const void *dxbc, size_t dxbc_length,

libs/vkd3d/state.c

@@ -1354,8 +1354,10 @@ static HRESULT create_shader_stage(struct d3d12_device *device,
     compile_info.target_type = VKD3D_SHADER_TARGET_SPIRV_BINARY;
     compile_info.options = NULL;
     compile_info.option_count = 0;
+    compile_info.log_level = VKD3D_SHADER_LOG_NONE;
+    compile_info.source_name = NULL;
 
-    if ((ret = vkd3d_shader_compile(&compile_info, &spirv)) < 0)
+    if ((ret = vkd3d_shader_compile(&compile_info, &spirv, NULL)) < 0)
     {
         WARN("Failed to compile shader, vkd3d result %d.\n", ret);
         return hresult_from_vkd3d_result(ret);
@@ -1527,7 +1529,7 @@ static HRESULT d3d12_pipeline_state_init_compute(struct d3d12_pipeline_state *st
     dxbc.size = desc->CS.BytecodeLength;
     shader_info.type = VKD3D_SHADER_STRUCTURE_TYPE_SCAN_INFO;
     shader_info.next = NULL;
-    if ((ret = vkd3d_shader_scan_dxbc(&dxbc, &shader_info)) < 0)
+    if ((ret = vkd3d_shader_scan_dxbc(&dxbc, &shader_info, NULL)) < 0)
     {
         WARN("Failed to scan shader bytecode, vkd3d result %d.\n", ret);
         return hresult_from_vkd3d_result(ret);
@@ -2271,7 +2273,7 @@ static HRESULT d3d12_pipeline_state_init_graphics(struct d3d12_pipeline_state *s
         if (!b->pShaderBytecode)
             continue;
 
-        if ((ret = vkd3d_shader_scan_dxbc(&dxbc, &shader_info)) < 0)
+        if ((ret = vkd3d_shader_scan_dxbc(&dxbc, &shader_info, NULL)) < 0)
         {
             WARN("Failed to scan shader bytecode, stage %#x, vkd3d result %d.\n",
                     shader_stages[i].stage, ret);

programs/vkd3d-compiler/main.c

@@ -222,6 +222,7 @@ int main(int argc, char **argv)
     struct vkd3d_shader_compile_info info;
     struct vkd3d_shader_code spirv;
     struct options options;
+    char *messages;
     int ret;
 
     if (!parse_command_line(argc, argv, &options))
@@ -242,6 +243,8 @@ int main(int argc, char **argv)
     info.target_type = VKD3D_SHADER_TARGET_SPIRV_BINARY;
     info.options = options.compile_options;
     info.option_count = options.compile_option_count;
+    info.log_level = VKD3D_SHADER_LOG_INFO;
+    info.source_name = options.filename;
 
     if (!read_shader(&info.source, options.filename))
     {
@@ -249,7 +252,10 @@ int main(int argc, char **argv)
         return 1;
     }
 
-    ret = vkd3d_shader_compile(&info, &spirv);
+    ret = vkd3d_shader_compile(&info, &spirv, &messages);
+    if (messages)
+        fputs(messages, stderr);
+    vkd3d_shader_free_messages(messages);
     vkd3d_shader_free_shader_code(&info.source);
     if (ret < 0)
     {

tests/vkd3d_shader_api.c

@@ -63,8 +63,10 @@ static void test_invalid_shaders(void)
     info.target_type = VKD3D_SHADER_TARGET_SPIRV_BINARY;
     info.options = &option;
     info.option_count = 1;
+    info.log_level = VKD3D_SHADER_LOG_NONE;
+    info.source_name = NULL;
 
-    rc = vkd3d_shader_compile(&info, &spirv);
+    rc = vkd3d_shader_compile(&info, &spirv, NULL);
     ok(rc == VKD3D_ERROR_INVALID_SHADER, "Got unexpected error code %d.\n", rc);
 }
 
@@ -140,14 +142,16 @@ static void test_vkd3d_shader_pfns(void)
     compile_info.target_type = VKD3D_SHADER_TARGET_SPIRV_BINARY;
     compile_info.options = NULL;
     compile_info.option_count = 0;
+    compile_info.log_level = VKD3D_SHADER_LOG_NONE;
+    compile_info.source_name = NULL;
 
-    rc = pfn_vkd3d_shader_compile(&compile_info, &spirv);
+    rc = pfn_vkd3d_shader_compile(&compile_info, &spirv, NULL);
     ok(rc == VKD3D_OK, "Got unexpected error code %d.\n", rc);
     pfn_vkd3d_shader_free_shader_code(&spirv);
 
     memset(&scan_info, 0, sizeof(scan_info));
     scan_info.type = VKD3D_SHADER_STRUCTURE_TYPE_SCAN_INFO;
-    rc = pfn_vkd3d_shader_scan_dxbc(&vs, &scan_info);
+    rc = pfn_vkd3d_shader_scan_dxbc(&vs, &scan_info, NULL);
     ok(rc == VKD3D_OK, "Got unexpected error code %d.\n", rc);
 }