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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#pragma once
#include "kernel/integrator/init_from_camera.h"
#include "kernel/integrator/intersect_closest.h"
#include "kernel/integrator/intersect_shadow.h"
#include "kernel/integrator/intersect_subsurface.h"
#include "kernel/integrator/intersect_volume_stack.h"
#include "kernel/integrator/shade_background.h"
#include "kernel/integrator/shade_light.h"
#include "kernel/integrator/shade_shadow.h"
#include "kernel/integrator/shade_surface.h"
#include "kernel/integrator/shade_volume.h"
CCL_NAMESPACE_BEGIN
ccl_device void integrator_megakernel(KernelGlobals kg,
IntegratorState state,
ccl_global float *ccl_restrict render_buffer)
{
/* Each kernel indicates the next kernel to execute, so here we simply
* have to check what that kernel is and execute it. */
while (true) {
/* Handle any shadow paths before we potentially create more shadow paths. */
const uint32_t shadow_queued_kernel = INTEGRATOR_STATE(
&state->shadow, shadow_path, queued_kernel);
if (shadow_queued_kernel) {
switch (shadow_queued_kernel) {
case DEVICE_KERNEL_INTEGRATOR_INTERSECT_SHADOW:
integrator_intersect_shadow(kg, &state->shadow);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_SHADOW:
integrator_shade_shadow(kg, &state->shadow, render_buffer);
break;
default:
kernel_assert(0);
break;
}
continue;
}
/* Handle any AO paths before we potentially create more AO paths. */
const uint32_t ao_queued_kernel = INTEGRATOR_STATE(&state->ao, shadow_path, queued_kernel);
if (ao_queued_kernel) {
switch (ao_queued_kernel) {
case DEVICE_KERNEL_INTEGRATOR_INTERSECT_SHADOW:
integrator_intersect_shadow(kg, &state->ao);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_SHADOW:
integrator_shade_shadow(kg, &state->ao, render_buffer);
break;
default:
kernel_assert(0);
break;
}
continue;
}
/* Then handle regular path kernels. */
const uint32_t queued_kernel = INTEGRATOR_STATE(state, path, queued_kernel);
if (queued_kernel) {
switch (queued_kernel) {
case DEVICE_KERNEL_INTEGRATOR_INTERSECT_CLOSEST:
integrator_intersect_closest(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_BACKGROUND:
integrator_shade_background(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE:
integrator_shade_surface(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_VOLUME:
integrator_shade_volume(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE_RAYTRACE:
integrator_shade_surface_raytrace(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_SURFACE_MNEE:
integrator_shade_surface_mnee(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_SHADE_LIGHT:
integrator_shade_light(kg, state, render_buffer);
break;
case DEVICE_KERNEL_INTEGRATOR_INTERSECT_SUBSURFACE:
integrator_intersect_subsurface(kg, state);
break;
case DEVICE_KERNEL_INTEGRATOR_INTERSECT_VOLUME_STACK:
integrator_intersect_volume_stack(kg, state);
break;
default:
kernel_assert(0);
break;
}
continue;
}
break;
}
}
CCL_NAMESPACE_END
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