8907567a00
If the compilation subprocess crashes due to an internal driver error, the end semaphore is never signaled and leaves Blender hanging. This replaces the `decrement` calls with `try_decrement` and checks every second if the subprocess is lost. Additionally, if the issue comes from a broken binary, the crashes will happen every time a Blender session tries to load it. So now we store the shader hash in the shared memory before trying to load the binary. If the subprocess is lost mid compilation, the main process will delete the broken cached binary. Pull Request: https://projects.blender.org/blender/blender/pulls/139747
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "GPU_compilation_subprocess.hh"
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#if BLI_SUBPROCESS_SUPPORT
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# include "BLI_sys_types.h"
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namespace blender::gpu {
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/* The size of the memory pools shared by Blender and the compilation subprocesses. */
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constexpr size_t compilation_subprocess_shared_memory_size = 1024 * 1024 * 5; /* 5 MiB */
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struct ShaderSourceHeader {
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enum Type { COMPUTE, GRAPHICS, GRAPHICS_WITH_GEOMETRY_STAGE };
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/* The type of program being compiled. */
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Type type;
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/* The source code for all the shader stages (Separated by a null terminator).
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* The stages follows the execution order (eg. vert > geom > frag). */
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char sources[compilation_subprocess_shared_memory_size - sizeof(type)];
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};
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static_assert(sizeof(ShaderSourceHeader) == compilation_subprocess_shared_memory_size,
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"Size must match the shared memory size");
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struct ShaderBinaryHeader {
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/* Size of the shader binary data. */
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int32_t size;
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/* Magic number that identifies the format of this shader binary (Driver-defined).
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* This (and size) is set to 0 when the shader has failed to compile. */
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uint32_t format;
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/* The serialized shader binary data. */
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uint8_t data[compilation_subprocess_shared_memory_size - sizeof(size) - sizeof(format)];
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};
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static_assert(sizeof(ShaderBinaryHeader) == compilation_subprocess_shared_memory_size,
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"Size must match the shared memory size");
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void GL_shader_cache_dir_clear_old();
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std::string GL_shader_cache_dir_get();
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} // namespace blender::gpu
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#endif
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