Added runtime mip map generation examples (wip) (refs #178)

data/shaders/texturemipmapgen/texture.frag

@@ -0,0 +1,19 @@
+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (set = 0, binding = 1) uniform texture2D textureColor;
+layout (set = 0, binding = 2) uniform sampler samplers[3];
+
+layout (location = 0) in vec2 inUV;
+layout (location = 1) in float inLodBias;
+layout (location = 2) in float inSamplerIndex;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	highp int samplerIndex = int(inSamplerIndex);
+	outFragColor = texture(sampler2D(textureColor, samplers[samplerIndex]), inUV, inLodBias);
+}