Added Vulkan examples sources!

data/shaders/offscreen/generate-spirv.bat

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+glslangvalidator -V offscreen.vert -o offscreen.vert.spv
+glslangvalidator -V offscreen.frag -o offscreen.frag.spv
+glslangvalidator -V quad.vert -o quad.vert.spv
+glslangvalidator -V quad.frag -o quad.frag.spv
+glslangvalidator -V mirror.vert -o mirror.vert.spv
+glslangvalidator -V mirror.frag -o mirror.frag.spv
+

data/shaders/offscreen/mirror.frag

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (binding = 1) uniform sampler2D samplerColor;
+layout (binding = 2) uniform sampler2D samplerColorMap;
+
+layout (location = 0) in vec2 inUV;
+layout (location = 1) in vec4 inPos;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	vec4 tmp = vec4(1.0 / inPos.w);
+    vec4 projCoord = inPos * tmp;
+	// Scale and bias
+    projCoord += vec4(1.0);
+    projCoord *= vec4(0.5);
+		
+	// Slow single pass blur
+	// For demonstration purposes only
+	const float blurSize = 1.0 / 512.0;	
+    vec4 reflection = vec4(0.0);
+    for (int x = -3; x <= 3; x++)
+	{
+        for (int y = -3; y <= 3; y++)
+		{
+            reflection += texture(samplerColor, vec2(projCoord.s + x * blurSize, projCoord.t + y * blurSize)) / 49.0;
+		}
+	}
+	
+	vec4 color = texture(samplerColorMap, inUV);
+	
+	outFragColor = color * 0.25;
+	outFragColor += reflection * 1.5 * (color.r);
+	
+}

data/shaders/offscreen/mirror.vert

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec2 inUV;
+layout (location = 3) in vec3 inNormal;
+
+layout (binding = 0) uniform UBO 
+{
+	mat4 projection;
+	mat4 model;
+} ubo;
+
+layout (location = 0) out vec2 outUV;
+layout (location = 1) out vec4 outPos;
+
+void main() 
+{
+	outUV = inUV;
+	outPos = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
+	gl_Position = outPos;		
+}

data/shaders/offscreen/offscreen.frag

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (location = 0) in vec3 inNormal;
+layout (location = 1) in vec3 inColor;
+layout (location = 2) in vec3 inEyePos;
+layout (location = 3) in vec3 inLightVec;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	vec3 Eye = normalize(-inEyePos);
+	vec3 Reflected = normalize(reflect(-inLightVec, inNormal)); 
+
+	vec4 IAmbient = vec4(0.1, 0.1, 0.1, 1.0);
+	vec4 IDiffuse = vec4(max(dot(inNormal, inLightVec), 0.0));
+	float specular = 0.75;
+	vec4 ISpecular = vec4(0.0);
+	if (dot(inEyePos, inNormal) < 0.0)
+	{
+		ISpecular = vec4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 16.0) * specular; 
+	}
+
+	outFragColor = vec4((IAmbient + IDiffuse) * vec4(inColor, 1.0) + ISpecular);
+  
+}

data/shaders/offscreen/offscreen.vert

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (location = 0) in vec4 inPos;
+layout (location = 2) in vec3 inColor;
+layout (location = 3) in vec3 inNormal;
+
+layout (binding = 0) uniform UBO 
+{
+	mat4 projection;
+	mat4 model;
+	vec4 lightPos;
+} ubo;
+
+layout (location = 0) out vec3 outNormal;
+layout (location = 1) out vec3 outColor;
+layout (location = 2) out vec3 outEyePos;
+layout (location = 3) out vec3 outLightVec;
+
+void main() 
+{
+	outNormal = inNormal;
+	outColor = inColor;
+	gl_Position = ubo.projection * ubo.model * inPos;
+	outEyePos = vec3(ubo.model * inPos);
+	outLightVec = normalize(ubo.lightPos.xyz - outEyePos);
+
+	// Clip against reflection plane
+	//vec4 clipPlane = vec4(0.0, -1.0, 0.0, 0.0);
+	
+	//gl_ClipDistance[0] = dot(inPos, clipPlane);
+	
+}

data/shaders/offscreen/quad.frag

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (binding = 1) uniform sampler2D samplerColor;
+
+layout (location = 0) in vec2 inUV;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+  outFragColor = texture(samplerColor, inUV);
+}

data/shaders/offscreen/quad.vert

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+#version 450
+
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_ARB_shading_language_420pack : enable
+
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec2 inUV;
+
+layout (binding = 0) uniform UBO 
+{
+	mat4 projection;
+	mat4 model;
+} ubo;
+
+layout (location = 0) out vec2 outUV;
+
+void main() 
+{
+	outUV = inUV;
+	gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
+}