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55 lines
2.5 KiB
C++
55 lines
2.5 KiB
C++
/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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// the bindings of the shaders of the vulkan renderer, in one place for the c++ code and the shaders: the renderer puts them
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// before the sources of shaders/vk14 as #define lines (vk14::binding_preamble()), and shaders/vk14/common.glsl writes the
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// same values for the SPIR-V binaries, which glslc compiles without the renderer (the renderer checks they are the same).
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//
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// the descriptor sets (decision K6 of the plan): set 0 holds the resources of a pass, made when the renderer starts and bound
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// with a dynamic offset in the ring of the frame; set 1 is pushed with the draws (vkCmdPushDescriptorSet2): the textures of
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// the material and what changes between the draws. a layout can have only one set pushed, so the passes without a set of
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// their own (the user interface, the compute passes) push set 0
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#pragma once
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#include <cstdint>
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#include <string>
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namespace vk14::bindings
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{
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// the user interface (imgui): one pushed set with the texture, the transform in the push constants
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constexpr std::uint32_t UI_SET = 0;
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constexpr std::uint32_t UI_TEXTURE = 0;
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// the sets of the passes of the scene (from the stage D1 of the plan)
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constexpr std::uint32_t PASS_SET = 0;
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constexpr std::uint32_t MATERIAL_SET = 1;
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// the textures of a material take the bindings of their units (#pragma texture(name, unit, ...)), 0 .. MAX_TEXTURES - 1
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constexpr std::uint32_t MATERIAL_TEXTURE_FIRST = 0;
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// the specialization constants of the shaders
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// 1: the colour written to the window is encoded by the shader (a window without an srgb format, gfx.shadergamma yes)
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constexpr std::uint32_t SPEC_OUTPUT_GAMMA = 0;
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} // namespace vk14::bindings
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namespace vk14
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{
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// the bindings above as #define lines, with MASZYNA_CONSTANTS, which tells shaders/vk14/common.glsl not to write its own
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inline std::string binding_preamble()
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{
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auto const define = [](char const *Name, std::uint32_t const Value) { return std::string("#define ") + Name + " " + std::to_string(Value) + "\n"; };
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return define("MASZYNA_CONSTANTS", 1) + define("UI_SET", bindings::UI_SET) + define("UI_TEXTURE", bindings::UI_TEXTURE) + define("PASS_SET", bindings::PASS_SET) + define("MATERIAL_SET", bindings::MATERIAL_SET) +
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define("MATERIAL_TEXTURE_FIRST", bindings::MATERIAL_TEXTURE_FIRST) + define("SPEC_OUTPUT_GAMMA", bindings::SPEC_OUTPUT_GAMMA);
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}
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} // namespace vk14
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