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Cycles: optimize CPU split kernel data init.

This commit is contained in:
Brecht Van Lommel 2017-08-06 17:17:40 +02:00
parent 601f94a3c2
commit 8f97108353
1 changed files with 16 additions and 4 deletions
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20
intern/cycles/kernel/split/kernel_data_init.h
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@ -124,14 +124,25 @@ void KERNEL_FUNCTION_FULL_NAME(data_init)(
/* zero the tiles pixels and initialize rng_state if this is the first sample */
if(start_sample == 0) {
parallel_for(kg, i, sw * sh * kernel_data.film.pass_stride) {
int pixel = i / kernel_data.film.pass_stride;
int pass = i % kernel_data.film.pass_stride;
int pass_stride = kernel_data.film.pass_stride;
#ifdef __KERNEL_CPU__
for(int y = sy; y < sy + sh; y++) {
int index = offset + y * stride;
memset(buffer + (sx + index) * pass_stride, 0, sizeof(float) * pass_stride * sw);
for(int x = sx; x < sx + sw; x++) {
rng_state[index + x] = hash_int_2d(x, y);
}
}
#else
parallel_for(kg, i, sw * sh * pass_stride) {
int pixel = i / pass_stride;
int pass = i % pass_stride;
int x = sx + pixel % sw;
int y = sy + pixel / sw;
int index = (offset + x + y*stride) * kernel_data.film.pass_stride + pass;
int index = (offset + x + y*stride) * pass_stride + pass;
*(buffer + index) = 0.0f;
}
@ -143,6 +154,7 @@ void KERNEL_FUNCTION_FULL_NAME(data_init)(
int index = (offset + x + y*stride);
*(rng_state + index) = hash_int_2d(x, y);
}
#endif
}
#endif /* KERENL_STUB */