diff options
Diffstat (limited to 'intern/cycles/kernel/integrator/integrator_init_from_bake.h')
| -rw-r--r-- | intern/cycles/kernel/integrator/integrator_init_from_bake.h | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/intern/cycles/kernel/integrator/integrator_init_from_bake.h b/intern/cycles/kernel/integrator/integrator_init_from_bake.h deleted file mode 100644 index de916be24e7..00000000000 --- a/intern/cycles/kernel/integrator/integrator_init_from_bake.h +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright 2011-2021 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/kernel_accumulate.h" -#include "kernel/kernel_adaptive_sampling.h" -#include "kernel/kernel_camera.h" -#include "kernel/kernel_path_state.h" -#include "kernel/kernel_random.h" - -#include "kernel/geom/geom.h" - -CCL_NAMESPACE_BEGIN - -/* This helps with AA but it's not the real solution as it does not AA the geometry - * but it's better than nothing, thus committed. */ -ccl_device_inline float bake_clamp_mirror_repeat(float u, float max) -{ - /* use mirror repeat (like opengl texture) so that if the barycentric - * coordinate goes past the end of the triangle it is not always clamped - * to the same value, gives ugly patterns */ - u /= max; - float fu = floorf(u); - u = u - fu; - - return ((((int)fu) & 1) ? 1.0f - u : u) * max; -} - -/* Return false to indicate that this pixel is finished. - * Used by CPU implementation to not attempt to sample pixel for multiple samples once its known - * that the pixel did converge. */ -ccl_device bool integrator_init_from_bake(KernelGlobals kg, - IntegratorState state, - ccl_global const KernelWorkTile *ccl_restrict tile, - ccl_global float *render_buffer, - const int x, - const int y, - const int scheduled_sample) -{ - PROFILING_INIT(kg, PROFILING_RAY_SETUP); - - /* Initialize path state to give basic buffer access and allow early outputs. */ - path_state_init(state, tile, x, y); - - /* Check whether the pixel has converged and should not be sampled anymore. */ - if (!kernel_need_sample_pixel(kg, state, render_buffer)) { - return false; - } - - /* Always count the sample, even if the camera sample will reject the ray. */ - const int sample = kernel_accum_sample(kg, state, render_buffer, scheduled_sample); - - /* Setup render buffers. */ - const int index = INTEGRATOR_STATE(state, path, render_pixel_index); - const int pass_stride = kernel_data.film.pass_stride; - render_buffer += index * pass_stride; - - ccl_global float *primitive = render_buffer + kernel_data.film.pass_bake_primitive; - ccl_global float *differential = render_buffer + kernel_data.film.pass_bake_differential; - - const int seed = __float_as_uint(primitive[0]); - int prim = __float_as_uint(primitive[1]); - if (prim == -1) { - return false; - } - - prim += kernel_data.bake.tri_offset; - - /* Random number generator. */ - const uint rng_hash = hash_uint(seed) ^ kernel_data.integrator.seed; - - float filter_x, filter_y; - if (sample == 0) { - filter_x = filter_y = 0.5f; - } - else { - path_rng_2D(kg, rng_hash, sample, PRNG_FILTER_U, &filter_x, &filter_y); - } - - /* Initialize path state for path integration. */ - path_state_init_integrator(kg, state, sample, rng_hash); - - /* Barycentric UV with sub-pixel offset. */ - float u = primitive[2]; - float v = primitive[3]; - - float dudx = differential[0]; - float dudy = differential[1]; - float dvdx = differential[2]; - float dvdy = differential[3]; - - if (sample > 0) { - u = bake_clamp_mirror_repeat(u + dudx * (filter_x - 0.5f) + dudy * (filter_y - 0.5f), 1.0f); - v = bake_clamp_mirror_repeat(v + dvdx * (filter_x - 0.5f) + dvdy * (filter_y - 0.5f), - 1.0f - u); - } - - /* Position and normal on triangle. */ - const int object = kernel_data.bake.object_index; - float3 P, Ng; - int shader; - triangle_point_normal(kg, object, prim, u, v, &P, &Ng, &shader); - - const int object_flag = kernel_tex_fetch(__object_flag, object); - if (!(object_flag & SD_OBJECT_TRANSFORM_APPLIED)) { - Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM); - P = transform_point_auto(&tfm, P); - } - - if (kernel_data.film.pass_background != PASS_UNUSED) { - /* Environment baking. */ - - /* Setup and write ray. */ - Ray ray ccl_optional_struct_init; - ray.P = zero_float3(); - ray.D = normalize(P); - ray.t = FLT_MAX; - ray.time = 0.5f; - ray.dP = differential_zero_compact(); - ray.dD = differential_zero_compact(); - integrator_state_write_ray(kg, state, &ray); - - /* Setup next kernel to execute. */ - INTEGRATOR_PATH_INIT(DEVICE_KERNEL_INTEGRATOR_SHADE_BACKGROUND); - } - else { - /* Surface baking. */ - float3 N = (shader & SHADER_SMOOTH_NORMAL) ? triangle_smooth_normal(kg, Ng, prim, u, v) : Ng; - - if (!(object_flag & SD_OBJECT_TRANSFORM_APPLIED)) { - Transform itfm = object_fetch_transform(kg, object, OBJECT_INVERSE_TRANSFORM); - N = normalize(transform_direction_transposed(&itfm, N)); - Ng = normalize(transform_direction_transposed(&itfm, Ng)); - } - - /* Setup ray. */ - Ray ray ccl_optional_struct_init; - ray.P = P + N; - ray.D = -N; - ray.t = FLT_MAX; - ray.time = 0.5f; - - /* Setup differentials. */ - float3 dPdu, dPdv; - triangle_dPdudv(kg, prim, &dPdu, &dPdv); - if (!(object_flag & SD_OBJECT_TRANSFORM_APPLIED)) { - Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM); - dPdu = transform_direction(&tfm, dPdu); - dPdv = transform_direction(&tfm, dPdv); - } - - differential3 dP; - dP.dx = dPdu * dudx + dPdv * dvdx; - dP.dy = dPdu * dudy + dPdv * dvdy; - ray.dP = differential_make_compact(dP); - ray.dD = differential_zero_compact(); - - /* Write ray. */ - integrator_state_write_ray(kg, state, &ray); - - /* Setup and write intersection. */ - Intersection isect ccl_optional_struct_init; - isect.object = kernel_data.bake.object_index; - isect.prim = prim; - isect.u = u; - isect.v = v; - isect.t = 1.0f; - isect.type = PRIMITIVE_TRIANGLE; - integrator_state_write_isect(kg, state, &isect); - - /* Setup next kernel to execute. */ - const int shader_index = shader & SHADER_MASK; - const int shader_flags = kernel_tex_fetch(__shaders, shader_index).flags; - if (shader_flags & SD_HAS_RAYTRACE) { - INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE_RAYTRACE, shader_index); - } - else { - INTEGRATOR_PATH_INIT_SORTED(DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE, shader_index); - } - } - - return true; -} - -CCL_NAMESPACE_END |