FFmpeg
vulkan_shaderc.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
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15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <shaderc/shaderc.h>
20 
21 #include "mem.h"
22 
23 static int shdc_shader_compile(FFVkSPIRVCompiler *ctx, void *avctx,
24  FFVkSPIRVShader *shd, uint8_t **data,
25  size_t *size, const char *entrypoint,
26  void **opaque)
27 {
28  int loglevel, err, warn, ret;
29  const char *status, *message;
30  shaderc_compilation_result_t res;
31  static const char *shdc_result[] = {
32  [shaderc_compilation_status_success] = "success",
33  [shaderc_compilation_status_invalid_stage] = "invalid stage",
34  [shaderc_compilation_status_compilation_error] = "error",
35  [shaderc_compilation_status_internal_error] = "internal error",
36  [shaderc_compilation_status_null_result_object] = "no result",
37  [shaderc_compilation_status_invalid_assembly] = "invalid assembly",
38  };
39  static const shaderc_shader_kind shdc_kind[] = {
40  [VK_SHADER_STAGE_VERTEX_BIT] = shaderc_glsl_vertex_shader,
41  [VK_SHADER_STAGE_FRAGMENT_BIT] = shaderc_glsl_fragment_shader,
42  [VK_SHADER_STAGE_COMPUTE_BIT] = shaderc_glsl_compute_shader,
43  };
44 
45  shaderc_compile_options_t opts = shaderc_compile_options_initialize();
46  if (!opts)
47  return AVERROR(ENOMEM);
48 
49  shaderc_compile_options_set_target_env(opts, shaderc_target_env_vulkan,
50  shaderc_env_version_vulkan_1_2);
51  shaderc_compile_options_set_target_spirv(opts, shaderc_spirv_version_1_5);
52  shaderc_compile_options_set_optimization_level(opts,
53  shaderc_optimization_level_performance);
54 
55  res = shaderc_compile_into_spv((shaderc_compiler_t)ctx->priv,
56  shd->src.str, strlen(shd->src.str),
57  shdc_kind[shd->shader.stage],
58  shd->name, entrypoint, opts);
59  shaderc_compile_options_release(opts);
60 
61  ret = shaderc_result_get_compilation_status(res);
62  err = shaderc_result_get_num_errors(res);
63  warn = shaderc_result_get_num_warnings(res);
64  message = shaderc_result_get_error_message(res);
65 
66  loglevel = err ? AV_LOG_ERROR : warn ? AV_LOG_WARNING : AV_LOG_VERBOSE;
67 
68  ff_vk_print_shader(avctx, shd, loglevel);
69  if (message && (err || warn))
70  av_log(avctx, loglevel, "%s\n", message);
71  status = ret < FF_ARRAY_ELEMS(shdc_result) ? shdc_result[ret] : "unknown";
72  av_log(avctx, loglevel, "shaderc compile status '%s' (%d errors, %d warnings)\n",
73  status, err, warn);
74 
75  if (err > 0)
76  return AVERROR(EINVAL);
77 
78  *data = (uint8_t *)shaderc_result_get_bytes(res);
79  *size = shaderc_result_get_length(res);
80  *opaque = res;
81 
82  return 0;
83 }
84 
85 static void shdc_shader_free(FFVkSPIRVCompiler *ctx, void **opaque)
86 {
87  if (!opaque || !*opaque)
88  return;
89 
90  shaderc_result_release((shaderc_compilation_result_t)*opaque);
91  *opaque = NULL;
92 }
93 
95 {
97 
98  if (!ctx || !*ctx)
99  return;
100 
101  s = *ctx;
102 
103  shaderc_compiler_release((shaderc_compiler_t)s->priv);
104  av_freep(ctx);
105 }
106 
108 {
109  FFVkSPIRVCompiler *ret = av_mallocz(sizeof(*ret));
110  if (!ret)
111  return NULL;
112 
113  ret->compile_shader = shdc_shader_compile;
114  ret->free_shader = shdc_shader_free;
115  ret->uninit = shdc_uninit;
116 
117  ret->priv = (void *)shaderc_compiler_initialize();
118  if (!ret->priv)
119  av_freep(&ret);
120 
121  return ret;
122 }
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
status
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
message
Definition: api-threadmessage-test.c:46
data
const char data[16]
Definition: mxf.c:146
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:196
ff_vk_print_shader
void ff_vk_print_shader(void *ctx, FFVkSPIRVShader *shd, int prio)
Pretty print shader, mainly used by shader compilers.
Definition: vulkan.c:827
shdc_shader_compile
static int shdc_shader_compile(FFVkSPIRVCompiler *ctx, void *avctx, FFVkSPIRVShader *shd, uint8_t **data, size_t *size, const char *entrypoint, void **opaque)
Definition: vulkan_shaderc.c:23
ff_vk_shaderc_init
static FFVkSPIRVCompiler * ff_vk_shaderc_init(void)
Definition: vulkan_shaderc.c:107
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
shdc_shader_free
static void shdc_shader_free(FFVkSPIRVCompiler *ctx, void **opaque)
Definition: vulkan_shaderc.c:85
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
s
#define s(width, name)
Definition: cbs_vp9.c:256
ctx
AVFormatContext * ctx
Definition: movenc.c:48
opts
AVDictionary * opts
Definition: movenc.c:50
NULL
#define NULL
Definition: coverity.c:32
size
int size
Definition: twinvq_data.h:10344
FFVkSPIRVCompiler
Definition: vulkan.h:65
FFVkSPIRVShader::shader
VkPipelineShaderStageCreateInfo shader
Definition: vulkan.h:62
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:264
FFVkSPIRVShader::src
AVBPrint src
Definition: vulkan.h:60
ret
ret
Definition: filter_design.txt:187
FFVkSPIRVShader
Definition: vulkan.h:58
mem.h
FFVkSPIRVShader::name
const char * name
Definition: vulkan.h:59
message
static int FUNC() message(CodedBitstreamContext *ctx, RWContext *rw, SEIRawMessage *current)
Definition: cbs_sei_syntax_template.c:147
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
shdc_uninit
static void shdc_uninit(FFVkSPIRVCompiler **ctx)
Definition: vulkan_shaderc.c:94