Update #18 - Final release, added PBR shaders

sources/resources/assets/eagler/glsl/deferred/skybox_render_end.fsh

@@ -0,0 +1,45 @@
+#line 2
+
+/*
+ * Copyright (c) 2023 LAX1DUDE. All Rights Reserved.
+ * 
+ * WITH THE EXCEPTION OF PATCH FILES, MINIFIED JAVASCRIPT, AND ALL FILES
+ * NORMALLY FOUND IN AN UNMODIFIED MINECRAFT RESOURCE PACK, YOU ARE NOT ALLOWED
+ * TO SHARE, DISTRIBUTE, OR REPURPOSE ANY FILE USED BY OR PRODUCED BY THE
+ * SOFTWARE IN THIS REPOSITORY WITHOUT PRIOR PERMISSION FROM THE PROJECT AUTHOR.
+ * 
+ * NOT FOR COMMERCIAL OR MALICIOUS USE
+ * 
+ * (please read the 'LICENSE' file this repo's root directory for more info) 
+ * 
+ */
+
+precision lowp int;
+precision highp float;
+precision highp sampler2D;
+
+in vec3 v_position3f;
+
+layout(location = 0) out vec4 output4f;
+
+#define SKY_BRIGHTNESS 0.015
+
+uniform sampler2D u_skyTexture;
+
+uniform vec2 u_skyTextureScale2f;
+
+void main() {
+	gl_FragDepth = 0.0;
+	vec3 viewDir = normalize(v_position3f);
+
+	vec3 blending = abs(viewDir * viewDir * viewDir);
+	blending = normalize(max(blending, 0.00001));
+	float b = (blending.x + blending.y + blending.z);
+	blending /= b;
+
+	vec3 blendedSkyColor = texture(u_skyTexture, v_position3f.zy * u_skyTextureScale2f).rgb * blending.x;
+	blendedSkyColor += texture(u_skyTexture, v_position3f.xz * u_skyTextureScale2f).rgb * blending.y;
+	blendedSkyColor += texture(u_skyTexture, v_position3f.xy * u_skyTextureScale2f).rgb * blending.z;
+
+	output4f = vec4(blendedSkyColor * blendedSkyColor * blendedSkyColor * SKY_BRIGHTNESS, 0.0);
+}