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Diffstat (limited to 'intern/cycles/kernel/closure/alloc.h')
| -rw-r--r-- | intern/cycles/kernel/closure/alloc.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/intern/cycles/kernel/closure/alloc.h b/intern/cycles/kernel/closure/alloc.h new file mode 100644 index 00000000000..b7abc1ec507 --- /dev/null +++ b/intern/cycles/kernel/closure/alloc.h @@ -0,0 +1,90 @@ +/* + * Copyright 2011-2016 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. + */ + +CCL_NAMESPACE_BEGIN + +ccl_device ShaderClosure *closure_alloc(ShaderData *sd, int size, ClosureType type, float3 weight) +{ + kernel_assert(size <= sizeof(ShaderClosure)); + + int num_closure = ccl_fetch(sd, num_closure); + int num_closure_extra = ccl_fetch(sd, num_closure_extra); + if(num_closure + num_closure_extra >= MAX_CLOSURE) + return NULL; + + ShaderClosure *sc = &ccl_fetch(sd, closure)[num_closure]; + + sc->type = type; + sc->weight = weight; + + ccl_fetch(sd, num_closure)++; + + return sc; +} + +ccl_device ccl_addr_space void *closure_alloc_extra(ShaderData *sd, int size) +{ + /* Allocate extra space for closure that need more parameters. We allocate + * in chunks of sizeof(ShaderClosure) starting from the end of the closure + * array. + * + * This lets us keep the same fast array iteration over closures, as we + * found linked list iteration and iteration with skipping to be slower. */ + int num_extra = ((size + sizeof(ShaderClosure) - 1) / sizeof(ShaderClosure)); + int num_closure = ccl_fetch(sd, num_closure); + int num_closure_extra = ccl_fetch(sd, num_closure_extra) + num_extra; + + if(num_closure + num_closure_extra > MAX_CLOSURE) { + /* Remove previous closure. */ + ccl_fetch(sd, num_closure)--; + ccl_fetch(sd, num_closure_extra)++; + return NULL; + } + + ccl_fetch(sd, num_closure_extra) = num_closure_extra; + return (ccl_addr_space void*)(ccl_fetch(sd, closure) + MAX_CLOSURE - num_closure_extra); +} + +ccl_device_inline ShaderClosure *bsdf_alloc(ShaderData *sd, int size, float3 weight) +{ + ShaderClosure *sc = closure_alloc(sd, size, CLOSURE_NONE_ID, weight); + + if(!sc) + return NULL; + + float sample_weight = fabsf(average(weight)); + sc->sample_weight = sample_weight; + return (sample_weight >= CLOSURE_WEIGHT_CUTOFF) ? sc : NULL; +} + +#ifdef __OSL__ +ccl_device_inline ShaderClosure *bsdf_alloc_osl(ShaderData *sd, int size, float3 weight, void *data) +{ + ShaderClosure *sc = closure_alloc(sd, size, CLOSURE_NONE_ID, weight); + + if(!sc) + return NULL; + + memcpy(sc, data, size); + + float sample_weight = fabsf(average(weight)); + sc->weight = weight; + sc->sample_weight = sample_weight; + return (sample_weight >= CLOSURE_WEIGHT_CUTOFF) ? sc : NULL; +} +#endif + +CCL_NAMESPACE_END |