Add DLSS Frame Generation (gfx.framegeneration x2/x3/x4) and Reflex (gfx.reflex) to the Vulkan renderer

shaders/vk14/postfx_fg_flip.frag

@@ -0,0 +1,18 @@
+#version 460 core
+#define STAGE_FRAGMENT 1
+#define LAYOUT_POST 1
+#include "common.glsl"
+// the depth or the velocities of the scene for the frame generation of dlss (rendering/vulkan14/vulkan14dlss.h), turned the right
+// way up: the images of the renderer go from the bottom of the picture up (decision K8), the image the frame generation is given
+// (what the window shows) from the top down. the texel as it is; the velocities keep their sign, their scale turns them over
+layout(location = 0) out vec4 out_value;
+
+#pragma texture(source_tex, 0, RGBA)
+layout(set = POST_SET, binding = POST_TEXTURE_FIRST + 0) uniform sampler2D source_tex;
+
+void main()
+{
+	ivec2 size = textureSize(source_tex, 0);
+	ivec2 pixel = ivec2(gl_FragCoord.xy);
+	out_value = texelFetch(source_tex, ivec2(pixel.x, size.y - 1 - pixel.y), 0);
+}