feat(vulkan): vulkan 1.4 core with the user interface and the launcher, shaders split into ogl46/vk14 with SPIR-V binaries loaded first

shaders/vk14/common.glsl

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+// what the shaders of the vulkan 1.4 renderer share: the bindings of rendering/vulkan14/vulkan14bindings.h and the settings.
+// compiled by the game, the bindings come from the renderer (vk14::binding_preamble()) and are taken instead of these; the
+// SPIR-V binaries (shaders/vk14bin) are compiled with the values written here, so they have to stay the same as in the game,
+// which checks them when it starts (and doesn't load the binaries when they differ)
+#ifndef COMMON_GLSL
+#define COMMON_GLSL
+
+#if !defined(STAGE_VERTEX) && !defined(STAGE_FRAGMENT) && !defined(STAGE_GEOMETRY) && !defined(STAGE_COMPUTE)
+#error "the stage of the shader isn't defined: #define STAGE_VERTEX 1 (STAGE_FRAGMENT, STAGE_GEOMETRY, STAGE_COMPUTE) before the include of common.glsl"
+#endif
+
+#ifndef MASZYNA_CONSTANTS
+#define MASZYNA_CONSTANTS 1
+#define UI_SET 0
+#define UI_TEXTURE 0
+#define PASS_SET 0
+#define MATERIAL_SET 1
+#define MATERIAL_TEXTURE_FIRST 0
+#define SPEC_OUTPUT_GAMMA 0
+#endif
+
+// whether the colour written to the window is encoded by the shader (FBOUT): the window has no srgb format (gfx.shadergamma yes).
+// a specialization constant, set by the renderer when it makes the pipeline
+layout(constant_id = SPEC_OUTPUT_GAMMA) const bool OUTPUT_GAMMA = false;
+
+// the colour written to the window
+vec4 FBOUT(vec4 x)
+{
+	return (OUTPUT_GAMMA ? vec4(pow(x.rgb, vec3(1.0 / 2.2)), x.a) : x);
+}
+
+#endif

shaders/vk14/imgui.frag

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+#version 460 core
+#define STAGE_FRAGMENT 1
+// the user interface (imgui): the colour of the vertices times the texture of the draw (the font, an image, a texture), pushed
+// with the draw
+
+#include "common.glsl"
+
+layout(location = 0) in vec2 f_uv;
+layout(location = 1) in vec4 f_colour;
+
+layout(set = UI_SET, binding = UI_TEXTURE) uniform sampler2D ui_texture;
+
+layout(location = 0) out vec4 out_colour;
+
+void main()
+{
+	out_colour = FBOUT(f_colour * texture(ui_texture, f_uv));
+}

shaders/vk14/imgui.vert

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+#version 460 core
+#define STAGE_VERTEX 1
+// the user interface (imgui), drawn by vk14::imgui_backend over the image of the window
+
+#include "common.glsl"
+
+layout(location = 0) in vec2 v_position;
+layout(location = 1) in vec2 v_uv;
+layout(location = 2) in vec4 v_colour;
+
+// the pixels of the window to the clip space
+layout(push_constant) uniform ui_transform
+{
+	vec2 scale;
+	vec2 translate;
+} transform;
+
+layout(location = 0) out vec2 f_uv;
+layout(location = 1) out vec4 f_colour;
+
+void main()
+{
+	f_uv = v_uv;
+	// the colours of imgui are srgb; they are mixed in linear light, as the user interface of the opengl renderer does it
+	f_colour = vec4(pow(v_colour.rgb, vec3(2.2)), v_colour.a);
+	gl_Position = vec4(v_position * transform.scale + transform.translate, 0.0, 1.0);
+}