Renaming of servers for coherency.

VisualServer -> RenderingServer
PhysicsServer -> PhysicsServer3D
Physics2DServer -> PhysicsServer2D
NavigationServer -> NavigationServer3D
Navigation2DServer -> NavigationServer2D

Also renamed corresponding files.

servers/rendering/rasterizer_rd/shaders/sky.glsl

@@ -0,0 +1,181 @@
+/* clang-format off */
+[vertex]
+
+#version 450
+
+VERSION_DEFINES
+
+layout(location = 0) out vec2 uv_interp;
+/* clang-format on */
+
+layout(push_constant, binding = 1, std430) uniform Params {
+	mat3 orientation;
+	vec4 proj;
+	vec4 position_multiplier;
+	float time;
+}
+params;
+
+void main() {
+
+	vec2 base_arr[4] = vec2[](vec2(-1.0, -1.0), vec2(-1.0, 1.0), vec2(1.0, 1.0), vec2(1.0, -1.0));
+	uv_interp = base_arr[gl_VertexIndex];
+	gl_Position = vec4(uv_interp, 1.0, 1.0);
+}
+
+/* clang-format off */
+[fragment]
+
+#version 450
+
+VERSION_DEFINES
+
+#define M_PI 3.14159265359
+
+layout(location = 0) in vec2 uv_interp;
+/* clang-format on */
+
+layout(push_constant, binding = 1, std430) uniform Params {
+	mat3 orientation;
+	vec4 proj;
+	vec4 position_multiplier;
+	float time; //TODO consider adding vec2 screen res, and float radiance size
+}
+params;
+
+#define SAMPLER_NEAREST_CLAMP 0
+#define SAMPLER_LINEAR_CLAMP 1
+#define SAMPLER_NEAREST_WITH_MIPMAPS_CLAMP 2
+#define SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP 3
+#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_CLAMP 4
+#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_CLAMP 5
+#define SAMPLER_NEAREST_REPEAT 6
+#define SAMPLER_LINEAR_REPEAT 7
+#define SAMPLER_NEAREST_WITH_MIPMAPS_REPEAT 8
+#define SAMPLER_LINEAR_WITH_MIPMAPS_REPEAT 9
+#define SAMPLER_NEAREST_WITH_MIPMAPS_ANISOTROPIC_REPEAT 10
+#define SAMPLER_LINEAR_WITH_MIPMAPS_ANISOTROPIC_REPEAT 11
+
+layout(set = 0, binding = 0) uniform sampler material_samplers[12];
+
+#ifdef USE_MATERIAL_UNIFORMS
+layout(set = 1, binding = 0, std140) uniform MaterialUniforms{
+	/* clang-format off */
+
+MATERIAL_UNIFORMS
+
+	/* clang-format on */
+} material;
+#endif
+
+layout(set = 2, binding = 0) uniform textureCube radiance;
+#ifdef USE_CUBEMAP_PASS
+layout(set = 2, binding = 1) uniform textureCube half_res;
+layout(set = 2, binding = 2) uniform textureCube quarter_res;
+#else
+layout(set = 2, binding = 1) uniform texture2D half_res;
+layout(set = 2, binding = 2) uniform texture2D quarter_res;
+#endif
+
+#ifdef USE_CUBEMAP_PASS
+#define AT_CUBEMAP_PASS true
+#else
+#define AT_CUBEMAP_PASS false
+#endif
+
+#ifdef USE_HALF_RES_PASS
+#define AT_HALF_RES_PASS true
+#else
+#define AT_HALF_RES_PASS false
+#endif
+
+#ifdef USE_QUARTER_RES_PASS
+#define AT_QUARTER_RES_PASS true
+#else
+#define AT_QUARTER_RES_PASS false
+#endif
+
+struct DirectionalLightData {
+	vec3 direction;
+	float energy;
+	vec3 color;
+	bool enabled;
+};
+
+layout(set = 3, binding = 0, std140) uniform DirectionalLights {
+	DirectionalLightData data[MAX_DIRECTIONAL_LIGHT_DATA_STRUCTS];
+}
+directional_lights;
+
+/* clang-format off */
+
+FRAGMENT_SHADER_GLOBALS
+
+/* clang-format on */
+
+layout(location = 0) out vec4 frag_color;
+
+void main() {
+
+	vec3 cube_normal;
+	cube_normal.z = -1.0;
+	cube_normal.x = (cube_normal.z * (-uv_interp.x - params.proj.x)) / params.proj.y;
+	cube_normal.y = -(cube_normal.z * (-uv_interp.y - params.proj.z)) / params.proj.w;
+	cube_normal = mat3(params.orientation) * cube_normal;
+	cube_normal.z = -cube_normal.z;
+	cube_normal = normalize(cube_normal);
+
+	vec2 uv = uv_interp * 0.5 + 0.5;
+
+	vec2 panorama_coords = vec2(atan(cube_normal.x, cube_normal.z), acos(cube_normal.y));
+
+	if (panorama_coords.x < 0.0) {
+		panorama_coords.x += M_PI * 2.0;
+	}
+
+	panorama_coords /= vec2(M_PI * 2.0, M_PI);
+
+	vec3 color = vec3(0.0, 0.0, 0.0);
+	float alpha = 1.0; // Only available to subpasses
+	vec4 half_res_color = vec4(1.0);
+	vec4 quarter_res_color = vec4(1.0);
+
+#ifdef USE_CUBEMAP_PASS
+	float using_cubemap = 1.0;
+#ifdef USES_HALF_RES_COLOR
+	half_res_color = texture(samplerCube(half_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), cube_normal);
+#endif
+#ifdef USES_QUARTER_RES_COLOR
+	quarter_res_color = texture(samplerCube(quarter_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), cube_normal);
+#endif
+#else
+	float using_cubemap = 0.0;
+#ifdef USES_HALF_RES_COLOR
+	half_res_color = textureLod(sampler2D(half_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0);
+#endif
+#ifdef USES_QUARTER_RES_COLOR
+	quarter_res_color = textureLod(sampler2D(quarter_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0);
+#endif
+#endif
+
+// unused, just here to make our compiler happy, make sure we don't execute any light code the user adds in..
+#ifndef REALLYINCLUDETHIS
+	{
+		/* clang-format off */
+
+LIGHT_SHADER_CODE
+
+		/* clang-format on */
+	}
+#endif
+	{
+		/* clang-format off */
+
+FRAGMENT_SHADER_CODE
+
+		/* clang-format on */
+	}
+
+	frag_color.rgb = color * params.position_multiplier.w;
+	frag_color.a = alpha;
+}