atdunbg
f73e52926f
- App/editor: move 7 panels into panels/ (Editor core stays at root) - shaders/: group into pbr/ post/ debug/ env/ (runtime load paths updated) - Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h
99 lines
4.3 KiB
GLSL
99 lines
4.3 KiB
GLSL
#version 450
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const int MAX_LIGHTS = 4;
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struct Light {
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vec4 color; // rgb = 颜色，a = 强度
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vec4 direction; // 方向光：xyz = 方向（已归一）
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vec4 position; // 点光：xyz = 世界位置
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vec4 params; // x = 类型(0=方向,1=点)，y = 衰减半径
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};
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layout(location = 0) in vec3 inPosition;
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layout(location = 1) in vec3 inNormal;
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layout(location = 2) in vec2 inUV;
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layout(location = 3) in vec3 inTangent;
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layout(location = 4) in uvec4 inBoneIds; // 骨骼槽（palette 下标，非全局节点号）
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layout(location = 5) in vec4 inWeights; // 蒙皮权重（无骨骼顶点 = (1,0,0,0)）
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layout(location = 0) out vec2 fragUV;
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layout(location = 1) out vec3 fragNormal;
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layout(location = 2) out vec3 fragWorldPos;
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layout(location = 3) out float fragViewDepth; // CSM：视图深度（级联选择）
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layout(location = 4) out vec2 fragVelocity; // TAA：clip 空间运动向量
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layout(location = 5) out vec3 fragTangent; // 世界空间切线（法线贴图）
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// GPUDriven：模型矩阵从实例缓冲按实例索引取。
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// 同一 mesh 的 N 个实体 = 1 次 drawIndexed(instanceCount=N)，
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// draw 侧用 firstInstance 指向该 batch 在实例数组中的起始下标。
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layout(std430, set = 0, binding = 1) readonly buffer ObjectBuffer {
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mat4 models[]; // 连续 mat4 数组（16B 对齐，std430/std140 布局一致）
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} objects;
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// 上一帧实例矩阵（与 ObjectBuffer 同下标 = 同一实例的上一帧姿态）
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layout(std430, set = 0, binding = 2) readonly buffer PrevObjectBuffer {
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mat4 prevModels[];
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} prevObjects;
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// 骨骼蒙皮：每实例一个 palette 基址（与 models 平行），骨骼矩阵全局扁平
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layout(std430, set = 0, binding = 3) readonly buffer SkinOffsetBuffer {
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uint skinBases[]; // 实例 → palette 基址
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} skinOffsets;
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layout(std430, set = 0, binding = 4) readonly buffer SkinPaletteBuffer {
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mat4 bones[]; // 全局 palette（槽 0 = identity，静态模型直通）
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} skinPalettes;
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layout(set = 0, binding = 0) uniform UniformBufferObject {
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mat4 view;
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mat4 proj;
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mat4 lightSpace[3]; // CSM 各级联光空间 VP
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vec4 cascadeSplits; // xyz = 级联 0..2 远边界（视图深度）
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vec4 ambientColor;
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Light lights[MAX_LIGHTS];
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mat4 projNoJitter;
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mat4 prevView;
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mat4 prevProj;
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vec4 cameraPos;
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} ubo;
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// 4 权重混合的蒙皮矩阵。无骨骼顶点 weights=(1,0,0,0)+ids=0 → identity。
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mat4 SkinMatrix() {
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uint base = skinOffsets.skinBases[gl_InstanceIndex];
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return skinPalettes.bones[base + inBoneIds.x] * inWeights.x +
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skinPalettes.bones[base + inBoneIds.y] * inWeights.y +
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skinPalettes.bones[base + inBoneIds.z] * inWeights.z +
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skinPalettes.bones[base + inBoneIds.w] * inWeights.w;
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}
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void main() {
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mat4 model = objects.models[gl_InstanceIndex];
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mat4 skin = SkinMatrix();
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vec3 skinnedPos = (skin * vec4(inPosition, 1.0)).xyz;
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vec4 worldPos = model * vec4(skinnedPos, 1.0);
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gl_Position = ubo.proj * ubo.view * worldPos;
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// ---- TAA velocity：当前帧与上一帧的 clip 空间位置差（UV 空间）----
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// 抖动只进光栅化 gl_Position，不进 velocity（否则抖动本身被当成运动）
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// v1：蒙皮形变不进 velocity（prev 用同一蒙皮姿态），边缘 ghosting 接受
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vec4 currClip = ubo.projNoJitter * ubo.view * worldPos;
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vec4 prevWorldPos = prevObjects.prevModels[gl_InstanceIndex] * vec4(skinnedPos, 1.0);
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vec4 prevClip = ubo.prevProj * ubo.prevView * prevWorldPos;
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fragVelocity = (currClip.xy / currClip.w - prevClip.xy / prevClip.w) * 0.5;
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fragWorldPos = worldPos.xyz;
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// CSM：视图深度（正值，与 cascadeSplits 同尺度）
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fragViewDepth = -(ubo.view * worldPos).z;
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mat3 normalMatrix = mat3(transpose(inverse(model)));
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// 法线先过蒙皮旋转（形变方向），再过模型逆变换
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fragNormal = normalize(normalMatrix * (mat3(skin) * inNormal));
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// 切线随模型变换（法线贴图 TBN；无切线数据保持零，frag 侧退回几何法线）
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fragTangent = normalize(mat3(model) * (mat3(skin) * inTangent));
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// 零向量 normalize 产生 NaN，这里直接透传零，frag 判长度
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fragTangent = dot(inTangent, inTangent) > 0.0 ? fragTangent : vec3(0.0);
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fragUV = inUV;
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}
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