Differential D13177 Diff 44624 intern/cycles/kernel/integrator/shadow_catcher.h

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intern/cycles/kernel/integrator/shadow_catcher.h

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* distributed under the License is distributed on an "AS IS" BASIS,		* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and		* See the License for the specific language governing permissions and
* limitations under the License.		* limitations under the License.
*/		*/

#pragma once		#pragma once

		#include "kernel/film/write_passes.h"
#include "kernel/integrator/path_state.h"		#include "kernel/integrator/path_state.h"
#include "kernel/integrator/state_util.h"		#include "kernel/integrator/state_util.h"

CCL_NAMESPACE_BEGIN		CCL_NAMESPACE_BEGIN

/* Check whether current surface bounce is where path is to be split for the shadow catcher. */		/* Check whether current surface bounce is where path is to be split for the shadow catcher. */
ccl_device_inline bool kernel_shadow_catcher_is_path_split_bounce(KernelGlobals kg,		ccl_device_inline bool kernel_shadow_catcher_is_path_split_bounce(KernelGlobals kg,
IntegratorState state,		IntegratorState state,
Show All 15 Lines	#ifdef __SHADOW_CATCHER__
const uint32_t path_flag = INTEGRATOR_STATE(state, path, flag);		const uint32_t path_flag = INTEGRATOR_STATE(state, path, flag);

if ((path_flag & PATH_RAY_TRANSPARENT_BACKGROUND) == 0) {		if ((path_flag & PATH_RAY_TRANSPARENT_BACKGROUND) == 0) {
/* Split only on primary rays, secondary bounces are to treat shadow catcher as a regular		/* Split only on primary rays, secondary bounces are to treat shadow catcher as a regular
* object. */		* object. */
return false;		return false;
}		}

if (path_flag & PATH_RAY_SHADOW_CATCHER_PASS) {		if (path_flag & PATH_RAY_SHADOW_CATCHER_HIT) {
return false;		return false;
}		}

return true;		return true;
#else		#else
(void)object_flag;		(void)object_flag;
return false;		return false;
#endif		#endif
Show All 24 Lines	ccl_device_forceinline bool kernel_shadow_catcher_is_matte_path(const uint32_t path_flag)
return (path_flag & PATH_RAY_SHADOW_CATCHER_HIT) == 0;		return (path_flag & PATH_RAY_SHADOW_CATCHER_HIT) == 0;
}		}

ccl_device_forceinline bool kernel_shadow_catcher_is_object_pass(const uint32_t path_flag)		ccl_device_forceinline bool kernel_shadow_catcher_is_object_pass(const uint32_t path_flag)
{		{
return path_flag & PATH_RAY_SHADOW_CATCHER_PASS;		return path_flag & PATH_RAY_SHADOW_CATCHER_PASS;
}		}

		/* Write shadow catcher passes on a bounce from the shadow catcher object. */
		ccl_device_forceinline void kernel_write_shadow_catcher_bounce_data(
		KernelGlobals kg, IntegratorState state, ccl_global float *ccl_restrict render_buffer)
		{
		kernel_assert(kernel_data.film.pass_shadow_catcher_sample_count != PASS_UNUSED);
		kernel_assert(kernel_data.film.pass_shadow_catcher_matte != PASS_UNUSED);

		const uint32_t render_pixel_index = INTEGRATOR_STATE(state, path, render_pixel_index);
		const uint64_t render_buffer_offset = (uint64_t)render_pixel_index *
		kernel_data.film.pass_stride;
		ccl_global float *buffer = render_buffer + render_buffer_offset;

		/* Count sample for the shadow catcher object. */
		kernel_write_pass_float(buffer + kernel_data.film.pass_shadow_catcher_sample_count, 1.0f);

		/* Since the split is done, the sample does not contribute to the matte, so accumulate it as
		* transparency to the matte. */
		const float3 throughput = INTEGRATOR_STATE(state, path, throughput);
		kernel_write_pass_float(buffer + kernel_data.film.pass_shadow_catcher_matte + 3,
		average(throughput));
		}

#endif /* __SHADOW_CATCHER__ */		#endif /* __SHADOW_CATCHER__ */

CCL_NAMESPACE_END		CCL_NAMESPACE_END