1 files changed, 89 insertions, 0 deletions
diff --git a/shaders/godot3.4/106-3.shader_test b/shaders/godot3.4/106-3.shader_test
new file mode 100644
index 0000000..2bdeeaf
--- /dev/null
+++ b/shaders/godot3.4/106-3.shader_test
@@ -0,0 +1,89 @@
+[require]
+GLSL >= 3.30
+
+[fragment shader]
+#version 330
+#define GLES_OVER_GL
+precision highp float;
+precision highp int;
+
+uniform highp samplerCube source_cube; //texunit:0
+/* clang-format on */
+in vec2 uv_interp;
+
+uniform bool z_flip;
+uniform highp float z_far;
+uniform highp float z_near;
+uniform highp float bias;
+
+void main() {
+	highp vec3 normal = vec3(uv_interp * 2.0 - 1.0, 0.0);
+	/*
+	if (z_flip) {
+		normal.z = 0.5 - 0.5 * ((normal.x * normal.x) + (normal.y * normal.y));
+	} else {
+		normal.z = -0.5 + 0.5 * ((normal.x * normal.x) + (normal.y * normal.y));
+	}
+	*/
+
+	//normal.z = sqrt(1.0 - dot(normal.xy, normal.xy));
+	//normal.xy *= 1.0 + normal.z;
+
+	normal.z = 0.5 - 0.5 * ((normal.x * normal.x) + (normal.y * normal.y));
+	normal = normalize(normal);
+	/*
+	normal.z = 0.5;
+	normal = normalize(normal);
+	*/
+
+	if (!z_flip) {
+		normal.z = -normal.z;
+	}
+
+	//normal = normalize(vec3(uv_interp * 2.0 - 1.0, 1.0));
+	float depth = texture(source_cube, normal).r;
+
+	// absolute values for direction cosines, bigger value equals closer to basis axis
+	vec3 unorm = abs(normal);
+
+	if ((unorm.x >= unorm.y) && (unorm.x >= unorm.z)) {
+		// x code
+		unorm = normal.x > 0.0 ? vec3(1.0, 0.0, 0.0) : vec3(-1.0, 0.0, 0.0);
+	} else if ((unorm.y > unorm.x) && (unorm.y >= unorm.z)) {
+		// y code
+		unorm = normal.y > 0.0 ? vec3(0.0, 1.0, 0.0) : vec3(0.0, -1.0, 0.0);
+	} else if ((unorm.z > unorm.x) && (unorm.z > unorm.y)) {
+		// z code
+		unorm = normal.z > 0.0 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 0.0, -1.0);
+	} else {
+		// oh-no we messed up code
+		// has to be
+		unorm = vec3(1.0, 0.0, 0.0);
+	}
+
+	float depth_fix = 1.0 / dot(normal, unorm);
+
+	depth = 2.0 * depth - 1.0;
+	float linear_depth = 2.0 * z_near * z_far / (z_far + z_near - depth * (z_far - z_near));
+	gl_FragDepth = (linear_depth * depth_fix + bias) / z_far;
+}
+
+[vertex shader]
+#version 330
+#define GLES_OVER_GL
+precision highp float;
+precision highp int;
+
+layout(location = 0) in highp vec4 vertex_attrib;
+/* clang-format on */
+layout(location = 4) in vec2 uv_in;
+
+out vec2 uv_interp;
+
+void main() {
+	uv_interp = uv_in;
+	gl_Position = vertex_attrib;
+}
+
+/* clang-format off */
+