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| // Paper: ZH3: Quadratic Zonal Harmonics, i3D 2024. https://torust.me/ZH3.pdf | |
| // Code based on paper and demo https://www.shadertoy.com/view/Xfj3RK | |
| #include "UnityCG.cginc" | |
| // L0 radiance = L0 irradiance * PI / Y_0 / AHat_0 | |
| // PI / (sqrt(1 / PI) / 2) / PI = 2 * sqrt(PI) | |
| const static float L0IrradianceToRadiance = 2 * sqrt(UNITY_PI); | |
| // L1 radiance = L1 irradiance * PI / Y_1 / AHat_1 |
pema99
/ QuadIntrinsics.cginc
Last active
July 3, 2024 09:48
Emulated Quad and Wave intrinsics for basic fragment shaders
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| // SPDX-License-Identifier: MIT | |
| // Author: pema99 | |
| // This file contains functions that simulate Quad and Wave Intrinsics without access to either. | |
| // For more information on those, see: https://github.com/Microsoft/DirectXShaderCompiler/wiki/Wave-Intrinsics | |
| // To use the functions, you must call SETUP_QUAD_INTRINSICS(pos) at the start of your fragment shader, | |
| // where 'pos' is the pixel position, ie. the fragment input variable with the SV_Position semantic. | |
| // Note that some functions will require SM 5.0, ie. #pragma target 5.0. |