b9ce231060
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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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CCL_NAMESPACE_BEGIN
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__device void kernel_shader_evaluate(KernelGlobals *kg, __global uint4 *input, __global float4 *output, ShaderEvalType type, int i)
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{
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ShaderData sd;
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uint4 in = input[i];
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float3 out;
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if(type == SHADER_EVAL_DISPLACE) {
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/* setup shader data */
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int object = in.x;
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int prim = in.y;
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float u = __uint_as_float(in.z);
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float v = __uint_as_float(in.w);
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shader_setup_from_displace(kg, &sd, object, prim, u, v);
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/* evaluate */
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float3 P = sd.P;
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shader_eval_displacement(kg, &sd, SHADER_CONTEXT_MAIN);
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out = sd.P - P;
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}
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else { // SHADER_EVAL_BACKGROUND
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/* setup ray */
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Ray ray;
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float u = __uint_as_float(in.x);
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float v = __uint_as_float(in.y);
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ray.P = make_float3(0.0f, 0.0f, 0.0f);
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ray.D = equirectangular_to_direction(u, v);
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ray.t = 0.0f;
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#ifdef __CAMERA_MOTION__
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ray.time = 0.5f;
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#endif
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#ifdef __RAY_DIFFERENTIALS__
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ray.dD = differential3_zero();
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ray.dP = differential3_zero();
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#endif
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/* setup shader data */
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shader_setup_from_background(kg, &sd, &ray, 0);
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/* evaluate */
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int flag = 0; /* we can't know which type of BSDF this is for */
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out = shader_eval_background(kg, &sd, flag, SHADER_CONTEXT_MAIN);
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}
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/* write output */
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output[i] = make_float4(out.x, out.y, out.z, 0.0f);
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}
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CCL_NAMESPACE_END
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