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Shivansps
49f4b1d9c7
* GLES Shaders and Vulkan Clip fallback * clip fallback: change defined name, set from engine side and invert usage * Proposed changes and fixes Fixed: -The OpenGL ES option stays on when OpenGL is off (issue #7984) -Missing precision in copy-f, volumetric-f and smaa-resolve-f -msaa-f including z-compress before precision quantification -missing float literals in volumetric-f -Fixed decals blending -Restored glBindFragDataLocation() for use in legacy external shaders -Enabled GL_ARB_explicit_attrib_location ext for GLSL version below 330 in GL -Guarded enabling/disabling of GL_CLIP_DISTANCE0_EXT and GL_DEPTH_CLAMP -Restored PI in lighting.sdr -removed "External shaders only" indication from cmakelists.txt
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#pragma once
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#include "globalincs/pstypes.h"
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#include "graphics/2d.h"
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#include <vulkan/vulkan.hpp>
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#include <memory>
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namespace graphics::vulkan {
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class VulkanShadercLibrary;
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/**
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* @brief Runtime GLSL->SPIR-V compiler using shaderc
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*
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* Replaces build-time glslc compilation. Compiles GLSL to SPIR-V at runtime
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* with disk caching, #define variant injection, and include resolution.
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* The shaderc library is loaded dynamically.
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*/
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class VulkanShaderCompiler {
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public:
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VulkanShaderCompiler();
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~VulkanShaderCompiler();
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bool init(bool hwClipDistance);
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void shutdown();
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/**
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* @brief Check if the shaderc library was loaded successfully
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*/
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bool isAvailable() const;
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/**
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* @brief Compile GLSL to SPIR-V with disk caching
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*
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* @param filename GLSL source filename, e.g. "main.frag"
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* @param stage Vertex or fragment
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* @param sdrType Shader type (for variant flag lookup)
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* @param flags SDR_FLAG_* bitmask — matching flags injected as #defines
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* @param requiresRaytracing Whether this (sdrType, flags) combination uses
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* GL_EXT_ray_query (see shader_variant_requires_raytracing()) and
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* therefore needs a SPIR-V target-env new enough to support it.
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* Left false for all other shaders so they keep targeting the
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* lowest common Vulkan version.
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* @return SPIR-V words, or empty vector on failure
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*/
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SCP_vector<uint32_t> compile(const SCP_string& filename,
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vk::ShaderStageFlagBits stage,
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shader_type sdrType,
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unsigned int flags,
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bool requiresRaytracing = false);
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/**
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* @brief Delete stale cache files older than ~2 months
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*/
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static void purgeOldCache();
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private:
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/**
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* @brief Build the GLSL header with #defines for variant flags
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*/
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SCP_string buildHeader(vk::ShaderStageFlagBits stage, shader_type sdrType, unsigned int flags) const;
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/**
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* @brief Compute an MD5 hash of the header + source + version tag for disk caching
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*/
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static SCP_string computeSourceHash(const SCP_string& header, const SCP_string& source);
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std::unique_ptr<VulkanShadercLibrary> m_shaderc;
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bool m_initialized = false;
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bool m_hwClipDistance = false;
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};
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} // namespace graphics::vulkan
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