Added basic HDR rendering example (wip)

data/shaders/hdr/gbuffer.vert

@@ -0,0 +1,51 @@
+#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 vec3 inNormal;
+
+layout (constant_id = 0) const int type = 0;
+
+layout (binding = 0) uniform UBO {
+	mat4 projection;
+	mat4 modelview;
+} ubo;
+
+layout (location = 0) out vec3 outUVW;
+layout (location = 1) out vec3 outPos;
+layout (location = 2) out vec3 outNormal;
+layout (location = 3) out vec3 outViewVec;
+layout (location = 4) out vec3 outLightVec;
+layout (location = 5) out mat4 outInvModelView;
+
+out gl_PerVertex 
+{
+	vec4 gl_Position;
+};
+
+void main() 
+{
+	outUVW = inPos;
+	outUVW.x *= -1.0;
+
+	switch(type) {
+		case 0: // Skybox
+			outPos = vec3(mat3(ubo.modelview) * inPos);
+			gl_Position = vec4(ubo.projection * vec4(outPos, 1.0));
+			break;
+		case 1: // Object
+			outPos = vec3(ubo.modelview * vec4(inPos, 1.0));
+			gl_Position = ubo.projection * ubo.modelview * vec4(inPos.xyz, 1.0);
+			break;
+	}
+	outPos = vec3(ubo.modelview * vec4(inPos, 1.0));
+	outNormal = mat3(ubo.modelview) * inNormal;	
+	
+	outInvModelView = inverse(ubo.modelview);
+
+	vec3 lightPos = vec3(0.0f, -5.0f, 5.0f);
+	outLightVec = lightPos.xyz - outPos.xyz;
+	outViewVec = -outPos.xyz;		
+}