playcanvas/build/playcanvas/src/scene/shader-lib/chunks/lit/frag/pass-shadow/litShadowMain.d.ts

PlayCanvas WebGL game engine

declare const _default: "\n\n#if LIGHT_TYPE != DIRECTIONAL\n    uniform vec3 view_position;\n    uniform float light_radius;\n#endif\n\n#if SHADOW_TYPE == PCSS_32F\n    #include \"linearizeDepthPS\"\n#endif\n\nvoid main(void) {\n    evaluateFrontend();\n\n    // using non-standard depth, i.e gl_FragCoord.z\n    #ifdef PERSPECTIVE_DEPTH\n        float depth = gl_FragCoord.z;\n\n        #if SHADOW_TYPE == PCSS_32F\n            // spot/omni shadows currently use linear depth.\n            // TODO: use perspective depth for spot/omni the same way as directional\n            #if LIGHT_TYPE != DIRECTIONAL\n                depth = linearizeDepth(depth, camera_params);\n            #endif\n        #endif\n\n    #else\n        float depth = min(distance(view_position, vPositionW) / light_radius, 0.99999);\n        #define MODIFIED_DEPTH\n    #endif\n\n    #if SHADOW_TYPE == VSM_16F || SHADOW_TYPE == VSM_32F\n        #if SHADOW_TYPE == VSM_32F\n            float exponent = 15.0;\n        #else\n            float exponent = 5.54;\n        #endif\n        depth = 2.0 * depth - 1.0;\n        depth =  exp(exponent * depth);\n        gl_FragColor = vec4(depth, depth*depth, 1.0, 1.0);\n    #else\n        #if SHADOW_TYPE == PCSS_32F\n            // store depth into R32\n            gl_FragColor.r = depth;\n        #else\n            #ifdef MODIFIED_DEPTH\n                // If we end up using modified depth, it needs to be explicitly written to gl_FragDepth\n                gl_FragDepth = depth;\n            #endif\n\n            // just the simplest code, color is not written anyway\n            gl_FragColor = vec4(1.0);\n        #endif\n    #endif\n}\n";
export default _default;