ssdfasd
bc58abc98f
1. 复制 PNanoVDB.hlsl 到 Res/Shader/ - GPU 端读取 NanoVDB 数据的核心库 2. 创建 volume.hlsl 体积渲染着色器 - 包含 VS 和 PS 入口 - 读取 NanoVDB 边界框数据 - 已通过 fxc 编译验证
50 lines
1.1 KiB
HLSL
50 lines
1.1 KiB
HLSL
#define PNANOVDB_HLSL
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#define PNANOVDB_ADDRESS_64
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#include "PNanoVDB.hlsl"
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cbuffer CB0 : register(b1)
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{
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float4x4 _ViewProjection;
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float3 _CameraPos;
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float _DensityScale;
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};
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StructuredBuffer<uint> buf : register(t1);
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struct VSInput
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{
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float3 position : POSITION;
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};
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struct PSInput
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{
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float4 position : SV_POSITION;
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float3 worldPos : TEXCOORD0;
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};
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PSInput MainVS(VSInput input)
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{
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PSInput output;
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output.position = mul(_ViewProjection, float4(input.position, 1.0));
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output.worldPos = input.position;
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return output;
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}
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float4 MainPS(PSInput input) : SV_TARGET
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{
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pnanovdb_grid_handle_t grid;
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grid.address.byte_offset = 0;
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float3 worldBboxMin = float3(
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 0),
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 1),
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 2)
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);
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float3 worldBboxMax = float3(
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 3),
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 4),
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(float)pnanovdb_grid_get_world_bbox(buf, grid, 5)
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);
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return float4(0.0, 1.0, 0.0, 1.0);
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} |