mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-27 09:52:17 +00:00
da72aca7b0
It's got a much better API that's actually maintained, it eliminates race conditions, it comes with a pkg-config file by default, and unfortunately isn't currently packaged by Debian or other large distributions.
123 lines
4.3 KiB
C
123 lines
4.3 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <shaderc/shaderc.h>
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#include "mem.h"
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static int shdc_shader_compile(FFVkSPIRVCompiler *ctx, void *avctx,
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FFVkSPIRVShader *shd, uint8_t **data,
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size_t *size, const char *entrypoint,
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void **opaque)
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{
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int loglevel, err, warn, ret;
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const char *status, *message;
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shaderc_compilation_result_t res;
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static const char *shdc_result[] = {
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[shaderc_compilation_status_success] = "success",
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[shaderc_compilation_status_invalid_stage] = "invalid stage",
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[shaderc_compilation_status_compilation_error] = "error",
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[shaderc_compilation_status_internal_error] = "internal error",
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[shaderc_compilation_status_null_result_object] = "no result",
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[shaderc_compilation_status_invalid_assembly] = "invalid assembly",
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};
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static const shaderc_shader_kind shdc_kind[] = {
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[VK_SHADER_STAGE_VERTEX_BIT] = shaderc_glsl_vertex_shader,
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[VK_SHADER_STAGE_FRAGMENT_BIT] = shaderc_glsl_fragment_shader,
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[VK_SHADER_STAGE_COMPUTE_BIT] = shaderc_glsl_compute_shader,
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};
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shaderc_compile_options_t opts = shaderc_compile_options_initialize();
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if (!opts)
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return AVERROR(ENOMEM);
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shaderc_compile_options_set_target_env(opts, shaderc_target_env_vulkan,
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shaderc_env_version_vulkan_1_2);
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shaderc_compile_options_set_target_spirv(opts, shaderc_spirv_version_1_5);
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shaderc_compile_options_set_optimization_level(opts,
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shaderc_optimization_level_performance);
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res = shaderc_compile_into_spv((shaderc_compiler_t)ctx->priv,
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shd->src.str, strlen(shd->src.str),
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shdc_kind[shd->shader.stage],
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shd->name, entrypoint, opts);
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shaderc_compile_options_release(opts);
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ret = shaderc_result_get_compilation_status(res);
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err = shaderc_result_get_num_errors(res);
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warn = shaderc_result_get_num_warnings(res);
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message = shaderc_result_get_error_message(res);
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loglevel = err ? AV_LOG_ERROR : warn ? AV_LOG_WARNING : AV_LOG_VERBOSE;
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ff_vk_print_shader(avctx, shd, loglevel);
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if (message && (err || warn))
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av_log(avctx, loglevel, "%s\n", message);
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status = ret < FF_ARRAY_ELEMS(shdc_result) ? shdc_result[ret] : "unknown";
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av_log(avctx, loglevel, "shaderc compile status '%s' (%d errors, %d warnings)\n",
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status, err, warn);
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if (err > 0)
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return AVERROR(EINVAL);
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*data = (uint8_t *)shaderc_result_get_bytes(res);
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*size = shaderc_result_get_length(res);
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*opaque = res;
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return 0;
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}
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static void shdc_shader_free(FFVkSPIRVCompiler *ctx, void **opaque)
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{
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if (!opaque || !*opaque)
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return;
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shaderc_result_release((shaderc_compilation_result_t)*opaque);
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*opaque = NULL;
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}
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static void shdc_uninit(FFVkSPIRVCompiler **ctx)
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{
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FFVkSPIRVCompiler *s;
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if (!ctx || !*ctx)
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return;
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s = *ctx;
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shaderc_compiler_release((shaderc_compiler_t)s->priv);
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av_freep(ctx);
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}
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static FFVkSPIRVCompiler *ff_vk_shaderc_init(void)
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{
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FFVkSPIRVCompiler *ret = av_mallocz(sizeof(*ret));
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if (!ret)
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return NULL;
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ret->compile_shader = shdc_shader_compile;
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ret->free_shader = shdc_shader_free;
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ret->uninit = shdc_uninit;
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ret->priv = (void *)shaderc_compiler_initialize();
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if (!ret->priv)
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av_freep(&ret);
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return ret;
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}
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