diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_white_noise.h')
-rw-r--r-- | intern/cycles/kernel/svm/svm_white_noise.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_white_noise.h b/intern/cycles/kernel/svm/svm_white_noise.h new file mode 100644 index 00000000000..77cbb88a8e2 --- /dev/null +++ b/intern/cycles/kernel/svm/svm_white_noise.h @@ -0,0 +1,53 @@ +/* + * 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. + */ + +CCL_NAMESPACE_BEGIN + +ccl_device void svm_node_tex_white_noise(KernelGlobals *kg, + ShaderData *sd, + float *stack, + uint dimensions, + uint inputs_stack_offsets, + uint value_stack_offset, + int *offset) +{ + uint vector_stack_offset, w_stack_offset; + decode_node_uchar4(inputs_stack_offsets, &vector_stack_offset, &w_stack_offset, NULL, NULL); + + float3 vector = stack_load_float3(stack, vector_stack_offset); + float w = stack_load_float(stack, w_stack_offset); + + float value; + switch (dimensions) { + case 1: + value = hash_float_to_float(w); + break; + case 2: + value = hash_float2_to_float(make_float2(vector.x, vector.y)); + break; + case 3: + value = hash_float3_to_float(vector); + break; + case 4: + value = hash_float4_to_float(make_float4(vector.x, vector.y, vector.z, w)); + break; + default: + kernel_assert(0); + } + stack_store_float(stack, value_stack_offset, value); +} + +CCL_NAMESPACE_END |