Cycles: Separate the render result for selective denoising

This commit finally implements the selective denoising pass writing.
With this commit, the denoising feature passes and therefore the changes to the
regular Cycles kernels should be finished.

1 files changed, 23 insertions, 0 deletions

diff --git a/intern/cycles/kernel/kernel_accumulate.h b/intern/cycles/kernel/kernel_accumulate.h
index 5f5a3609ded..d529ac17982 100644
--- a/intern/cycles/kernel/kernel_accumulate.h
+++ b/intern/cycles/kernel/kernel_accumulate.h
@@ -454,6 +454,29 @@ ccl_device_inline float3 path_radiance_clamp_and_sum(KernelGlobals *kg, PathRadi
 	return L_sum;
 }
 
+ccl_device_inline void path_radiance_split_denoising(KernelGlobals *kg, PathRadiance *L, float3 *noisy, float3 *clean)
+{
+#ifdef __PASSES__
+	kernel_assert(L->use_light_pass);
+
+	*clean = L->emission + L->background;
+	*noisy = L->direct_scatter + L->indirect_scatter;
+
+	/* TODO Clean this up */
+	*((kernel_data.film.denoise_flag & DENOISE_DIFFUSE_DIR)? noisy: clean) += L->direct_diffuse;
+	*((kernel_data.film.denoise_flag & DENOISE_DIFFUSE_IND)? noisy: clean) += L->indirect_diffuse;
+	*((kernel_data.film.denoise_flag & DENOISE_GLOSSY_DIR)? noisy: clean) += L->direct_glossy;
+	*((kernel_data.film.denoise_flag & DENOISE_GLOSSY_IND)? noisy: clean) += L->indirect_glossy;
+	*((kernel_data.film.denoise_flag & DENOISE_TRANSMISSION_DIR)? noisy: clean) += L->direct_transmission;
+	*((kernel_data.film.denoise_flag & DENOISE_TRANSMISSION_IND)? noisy: clean) += L->indirect_transmission;
+	*((kernel_data.film.denoise_flag & DENOISE_SUBSURFACE_DIR)? noisy: clean) += L->direct_subsurface;
+	*((kernel_data.film.denoise_flag & DENOISE_SUBSURFACE_IND)? noisy: clean) += L->indirect_subsurface;
+#else
+	*noisy = *L;
+	*clean = make_float3(0.0f, 0.0f, 0.0f);
+#endif
+}
+
 ccl_device_inline void path_radiance_accum_sample(PathRadiance *L, PathRadiance *L_sample, int num_samples)
 {
 	float fac = 1.0f/num_samples;