vkr: format with clang-format

clang-format insists on using .clang-format.  This commit adds
docs/vkr-clang-format as a doc.  To use it,

  $ cd src
  $ ln -sf ../docs/vkr-clang-format .clang-format
  $ clang-format -style file -i vkr_*

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>

docs/vkr-clang-format

@@ -0,0 +1,32 @@
+BasedOnStyle: LLVM
+AlwaysBreakAfterReturnType: TopLevel
+BinPackParameters: false
+BraceWrapping:
+  AfterControlStatement: false
+  AfterEnum: false
+  AfterFunction: true
+  AfterStruct: false
+  BeforeElse: false
+  SplitEmptyFunction: true
+BreakBeforeBraces: Custom
+ColumnLimit: 90
+ContinuationIndentWidth: 3
+Cpp11BracedListStyle: false
+ForEachMacros:
+  - LIST_FOR_EACH_ENTRY
+  - LIST_FOR_EACH_ENTRY_SAFE
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex:           '^"config.h"$'
+    Priority:        0
+  - Regex:           '^"vkr_'
+    Priority:        3
+  - Regex:           '^"(virgl|vrend_|c11/|util/|os/|pipe/|venus-protocol/)'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        1
+IndentWidth: 3
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyExcessCharacter: 100
+SpaceAfterCStyleCast: false
+SpaceBeforeCpp11BracedList: false

src/vkr_cs.c

@@ -6,7 +6,6 @@
 #include "vkr_cs.h"
 
 #include "util/u_memory.h"
-
 #include "vrend_iov.h"
 
 void
@@ -88,8 +87,8 @@ vkr_cs_encoder_seek_stream(struct vkr_cs_encoder *enc, size_t pos)
    const size_t offset = enc->stream.offset + pos;
    int iov_index;
    size_t iov_offset;
-   if (pos > enc->stream.size || !vkr_cs_encoder_translate_stream_offset(
-                                    enc, offset, &iov_index, &iov_offset)) {
+   if (pos > enc->stream.size ||
+       !vkr_cs_encoder_translate_stream_offset(enc, offset, &iov_index, &iov_offset)) {
       vkr_cs_encoder_set_fatal(enc);
       return;
    }
@@ -118,9 +117,7 @@ vkr_cs_encoder_next_iov(struct vkr_cs_encoder *enc)
 }
 
 static uint8_t *
-vkr_cs_encoder_get_ptr(struct vkr_cs_encoder *enc,
-                       size_t size,
-                       size_t *ptr_size)
+vkr_cs_encoder_get_ptr(struct vkr_cs_encoder *enc, size_t size, size_t *ptr_size)
 {
    while (true) {
       uint8_t *ptr = enc->cur;
@@ -330,8 +327,7 @@ vkr_cs_decoder_alloc_temp_internal(struct vkr_cs_decoder *dec, size_t size)
    }
 
    const size_t cur_buf_size =
-      pool->buffer_count ? pool->end - pool->buffers[pool->buffer_count - 1]
-                         : 0;
+      pool->buffer_count ? pool->end - pool->buffers[pool->buffer_count - 1] : 0;
    const size_t buf_size = next_buffer_size(cur_buf_size, 4096, size);
    if (!buf_size)
       return false;

src/vkr_cs.h

@@ -140,9 +140,7 @@ vkr_cs_decoder_get_fatal(const struct vkr_cs_decoder *dec)
 }
 
 static inline void
-vkr_cs_decoder_set_stream(struct vkr_cs_decoder *dec,
-                          const void *data,
-                          size_t size)
+vkr_cs_decoder_set_stream(struct vkr_cs_decoder *dec, const void *data, size_t size)
 {
    dec->cur = data;
    dec->end = dec->cur + size;
@@ -180,10 +178,7 @@ vkr_cs_decoder_peek_internal(const struct vkr_cs_decoder *dec,
 }
 
 static inline void
-vkr_cs_decoder_read(struct vkr_cs_decoder *dec,
-                    size_t size,
-                    void *val,
-                    size_t val_size)
+vkr_cs_decoder_read(struct vkr_cs_decoder *dec, size_t size, void *val, size_t val_size)
 {
    if (vkr_cs_decoder_peek_internal(dec, size, val, val_size))
       dec->cur += size;
@@ -199,16 +194,14 @@ vkr_cs_decoder_peek(const struct vkr_cs_decoder *dec,
 }
 
 static inline struct vkr_object *
-vkr_cs_decoder_lookup_object(const struct vkr_cs_decoder *dec,
-                             vkr_object_id id)
+vkr_cs_decoder_lookup_object(const struct vkr_cs_decoder *dec, vkr_object_id id)
 {
    struct vkr_object *obj;
 
    if (!id)
       return NULL;
 
-   obj = util_hash_table_get_u64(
-      (struct util_hash_table_u64 *)dec->object_table, id);
+   obj = util_hash_table_get_u64((struct util_hash_table_u64 *)dec->object_table, id);
    if (!obj)
       vkr_cs_decoder_set_fatal(dec);
 
@@ -278,8 +271,7 @@ vkr_cs_handle_load_id(const void **handle, VkObjectType type)
 static inline void
 vkr_cs_handle_store_id(void **handle, vkr_object_id id, VkObjectType type)
 {
-   vkr_object_id *p = vkr_cs_handle_indirect_id(type)
-                         ? *(vkr_object_id **)handle
+   vkr_object_id *p = vkr_cs_handle_indirect_id(type) ? *(vkr_object_id **)handle
                                                       : (vkr_object_id *)handle;
    *p = id;
 }

src/vkr_renderer.h

@@ -63,8 +63,7 @@ vkr_get_capset(UNUSED void *capset)
 }
 
 static inline struct virgl_context *
-vkr_context_create(UNUSED size_t debug_len,
-                   UNUSED const char *debug_name)
+vkr_context_create(UNUSED size_t debug_len, UNUSED const char *debug_name)
 {
    return NULL;
 }

src/vkr_ring.c

@@ -11,7 +11,6 @@
 #include <time.h>
 
 #include "util/u_math.h"
-
 #include "virgl_context.h"
 
 enum vkr_ring_status_flag {
@@ -260,8 +259,7 @@ vkr_ring_write_extra(struct vkr_ring *ring, size_t offset, uint32_t val)
    if (offset > ring->extra_size || sizeof(val) > ring->extra_size - offset)
       return false;
 
-   volatile atomic_uint *dst =
-      (void *)((uint8_t *)ring->shared.extra + offset);
+   volatile atomic_uint *dst = (void *)((uint8_t *)ring->shared.extra + offset);
    atomic_store_explicit(dst, val, memory_order_release);
 
    return true;