//This file is automatically rebuilt by the Cesium build process.
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export default "vec3 LINEARtoSRGB(vec3 linearIn) \n\
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{\n\
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#ifndef HDR \n\
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return pow(linearIn, vec3(1.0/2.2));\n\
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#else \n\
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return linearIn;\n\
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#endif \n\
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}\n\
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\n\
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#ifdef LIGHTING_PBR\n\
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vec3 applyTonemapping(vec3 linearIn) \n\
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{\n\
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#ifndef HDR \n\
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return czm_acesTonemapping(linearIn);\n\
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#else \n\
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return linearIn;\n\
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#endif \n\
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}\n\
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\n\
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vec3 computePbrLighting(czm_modelMaterial inputMaterial)\n\
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{\n\
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czm_pbrParameters pbrParameters;\n\
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pbrParameters.diffuseColor = inputMaterial.diffuse;\n\
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pbrParameters.f0 = inputMaterial.specular;\n\
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pbrParameters.roughness = inputMaterial.roughness;\n\
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\n\
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vec3 lightColorHdr = czm_lightColorHdr;\n\
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\n\
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vec3 color = inputMaterial.diffuse;\n\
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#ifdef HAS_NORMALS\n\
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color = czm_pbrLighting(\n\
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v_positionEC,\n\
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inputMaterial.normalEC,\n\
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czm_lightDirectionEC,\n\
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lightColorHdr,\n\
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pbrParameters\n\
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);\n\
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#endif\n\
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\n\
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color *= inputMaterial.occlusion;\n\
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color += inputMaterial.emissive;\n\
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\n\
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// Convert high-dynamic range to low-dynamic range in HDR mode\n\
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color = applyTonemapping(color);\n\
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return color;\n\
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}\n\
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#endif\n\
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\n\
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void lightingStage(inout czm_modelMaterial material)\n\
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{\n\
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// Even though the lighting will only set the diffuse color,\n\
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// pass all other properties so further stages have access to them.\n\
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vec3 color = vec3(0.0);\n\
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\n\
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#ifdef LIGHTING_PBR\n\
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color = computePbrLighting(material);\n\
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#else // unlit\n\
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color = material.diffuse;\n\
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#endif\n\
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\n\
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color = LINEARtoSRGB(color);\n\
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\n\
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material.diffuse = color;\n\
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}\n\
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";
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