HDR skybox

Shaders/HDRMap.fs

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+#version 460 core
+out vec4 FragColor;
+in vec3 localPos;
+
+uniform sampler2D equirectangularMap;
+
+const vec2 invAtan = vec2(0.1591, 0.3183);
+
+vec2 SampleSphericalMap(vec3 v)
+{
+    vec2 uv = vec2(atan(v.z, v.x), asin(v.y));
+    uv *= invAtan;
+    uv += 0.5;
+    return uv;
+}
+
+void main(){
+    vec2 uv = SampleSphericalMap(localPos);
+    vec3 color = texture(equirectangularMap, uv).rgb;
+
+    FragColor = vec4(color,1.0);
+}

Shaders/HDRMap.vs

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+#version 460 core
+layout (location = 0) in vec3 aPos;
+
+out vec3 localPos;
+
+uniform mat4 projection;
+uniform mat4 view;
+
+void main(){
+    localPos = aPos;
+    gl_Position = projection * view * vec4(localPos, 1.0);
+}

Shaders/HDRSkybox.fs

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+#version 460 core
+out vec4 FragColor;
+
+in vec3 localPos;
+
+uniform samplerCube environmentMap;
+
+void main(){
+    vec3 envColor = texture(environmentMap, localPos).rgb;
+
+    envColor = envColor /(envColor + vec3(1.0));
+    envColor = pow(envColor, vec3(1.0/2.2));
+
+    FragColor = vec4(envColor,1.0);
+
+}

Shaders/HDRSkybox.vs

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+#version 460 core
+layout (location = 0) in vec3 aPos;
+
+uniform mat4 projection;
+uniform mat4 view;
+
+out vec3 localPos;
+
+void main(){
+    localPos = aPos;
+
+    mat4 rotView = mat4(mat3(view));
+    vec4 clipPos = projection * rotView * vec4(localPos,1.0);
+
+    gl_Position = clipPos.xyww;
+}