a407186dbf
Parallel shader compilation introduced `GPU_shader_cache_dir_clear_old`. The implementation was specific to OpenGL and could not be overwritten by other backends. This PR improves the implementation so the backend can have its own implementation. This is needed for upcoming changes to the Vulkan backend where we want to use similar mechanisms to speed up shader compilation and caching. Pull Request: https://projects.blender.org/blender/blender/pulls/127680
48 lines
1.5 KiB
C++
48 lines
1.5 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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} // namespace blender::gpu
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#endif
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