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Diffstat (limited to 'intern/cycles/kernel/bake/bake.h')
-rw-r--r-- | intern/cycles/kernel/bake/bake.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/intern/cycles/kernel/bake/bake.h b/intern/cycles/kernel/bake/bake.h new file mode 100644 index 00000000000..e234d56bd3c --- /dev/null +++ b/intern/cycles/kernel/bake/bake.h @@ -0,0 +1,119 @@ +/* + * Copyright 2011-2013 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +#include "kernel/camera/camera_projection.h" +#include "kernel/integrator/integrator_shader_eval.h" + +#include "kernel/geom/geom.h" + +CCL_NAMESPACE_BEGIN + +ccl_device void kernel_displace_evaluate(KernelGlobals kg, + ccl_global const KernelShaderEvalInput *input, + ccl_global float *output, + const int offset) +{ + /* Setup shader data. */ + const KernelShaderEvalInput in = input[offset]; + + ShaderData sd; + shader_setup_from_displace(kg, &sd, in.object, in.prim, in.u, in.v); + + /* Evaluate displacement shader. */ + const float3 P = sd.P; + shader_eval_displacement(kg, INTEGRATOR_STATE_NULL, &sd); + float3 D = sd.P - P; + + object_inverse_dir_transform(kg, &sd, &D); + +#ifdef __KERNEL_DEBUG_NAN__ + if (!isfinite3_safe(D)) { + kernel_assert(!"Cycles displacement with non-finite value detected"); + } +#endif + + /* Ensure finite displacement, preventing BVH from becoming degenerate and avoiding possible + * traversal issues caused by non-finite math. */ + D = ensure_finite3(D); + + /* Write output. */ + output[offset * 3 + 0] += D.x; + output[offset * 3 + 1] += D.y; + output[offset * 3 + 2] += D.z; +} + +ccl_device void kernel_background_evaluate(KernelGlobals kg, + ccl_global const KernelShaderEvalInput *input, + ccl_global float *output, + const int offset) +{ + /* Setup ray */ + const KernelShaderEvalInput in = input[offset]; + const float3 ray_P = zero_float3(); + const float3 ray_D = equirectangular_to_direction(in.u, in.v); + const float ray_time = 0.5f; + + /* Setup shader data. */ + ShaderData sd; + shader_setup_from_background(kg, &sd, ray_P, ray_D, ray_time); + + /* Evaluate shader. + * This is being evaluated for all BSDFs, so path flag does not contain a specific type. */ + const uint32_t path_flag = PATH_RAY_EMISSION; + shader_eval_surface<KERNEL_FEATURE_NODE_MASK_SURFACE_LIGHT & + ~(KERNEL_FEATURE_NODE_RAYTRACE | KERNEL_FEATURE_NODE_LIGHT_PATH)>( + kg, INTEGRATOR_STATE_NULL, &sd, NULL, path_flag); + float3 color = shader_background_eval(&sd); + +#ifdef __KERNEL_DEBUG_NAN__ + if (!isfinite3_safe(color)) { + kernel_assert(!"Cycles background with non-finite value detected"); + } +#endif + + /* Ensure finite color, avoiding possible numerical instabilities in the path tracing kernels. */ + color = ensure_finite3(color); + + /* Write output. */ + output[offset * 3 + 0] += color.x; + output[offset * 3 + 1] += color.y; + output[offset * 3 + 2] += color.z; +} + +ccl_device void kernel_curve_shadow_transparency_evaluate( + KernelGlobals kg, + ccl_global const KernelShaderEvalInput *input, + ccl_global float *output, + const int offset) +{ + /* Setup shader data. */ + const KernelShaderEvalInput in = input[offset]; + + ShaderData sd; + shader_setup_from_curve(kg, &sd, in.object, in.prim, __float_as_int(in.v), in.u); + + /* Evaluate transparency. */ + shader_eval_surface<KERNEL_FEATURE_NODE_MASK_SURFACE_SHADOW & + ~(KERNEL_FEATURE_NODE_RAYTRACE | KERNEL_FEATURE_NODE_LIGHT_PATH)>( + kg, INTEGRATOR_STATE_NULL, &sd, NULL, PATH_RAY_SHADOW); + + /* Write output. */ + output[offset] = clamp(average(shader_bsdf_transparency(kg, &sd)), 0.0f, 1.0f); +} + +CCL_NAMESPACE_END |