46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
#pragma once
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#include "vk_core.h"
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#include "vk_buffer.h"
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struct rt_vk_ray_accel_s {
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// Stores AS built data. Lifetime similar to render buffer:
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// - some portion lives for entire map lifetime
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// - some portion lives only for a single frame (may have several frames in flight)
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// TODO: unify this with render buffer
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// Needs: AS_STORAGE_BIT, SHADER_DEVICE_ADDRESS_BIT
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vk_buffer_t accels_buffer;
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struct alo_pool_s *accels_buffer_alloc;
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// Temp: lives only during a single frame (may have many in flight)
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// Used for building ASes;
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// Needs: AS_STORAGE_BIT, SHADER_DEVICE_ADDRESS_BIT
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vk_buffer_t scratch_buffer;
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VkDeviceAddress accels_buffer_addr, scratch_buffer_addr;
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// Temp-ish: used for making TLAS, contains addressed to all used BLASes
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// Lifetime and nature of usage similar to scratch_buffer
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// TODO: unify them
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// Needs: SHADER_DEVICE_ADDRESS, STORAGE_BUFFER, AS_BUILD_INPUT_READ_ONLY
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vk_buffer_t tlas_geom_buffer;
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VkDeviceAddress tlas_geom_buffer_addr;
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r_flipping_buffer_t tlas_geom_buffer_alloc;
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// TODO need several TLASes for N frames in flight
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VkAccelerationStructureKHR tlas;
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// Per-frame data that is accumulated between RayFrameBegin and End calls
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struct {
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uint32_t scratch_offset; // for building dynamic blases
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} frame;
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};
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extern struct rt_vk_ray_accel_s g_accel;
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qboolean RT_VkAccelInit(void);
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void RT_VkAccelShutdown(void);
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void RT_VkAccelNewMap(void);
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void RT_VkAccelFrameBegin(void);
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struct vk_combuf_s;
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void RT_VkAccelPrepareTlas(struct vk_combuf_s *combuf);
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