atdunbg
07a3b87001
阴影（本修正的核心根因）：
- Shadow pass 光源正交写深度（2048 D32），Forward 采样比较；
写入与采样共用同一 lightSpace 矩阵，杜绝姿态/镜像不一致
- 修复：push constant range 64B→128B（原 Shadow pass 推 {lightVP,model}
超出 layout 声明范围 = UB，阴影中模型矩阵读到垃圾导致旋转错乱）
- 修复：ShadowFactor 缺少 NDC→UV 映射（*0.5+0.5），采样区域整体错位
- 修复：RG ShaderRead stage 位值直转（eFragment=0x10 在 PipelineStage2
是 TESSELLATION_CONTROL），改为逐位显式映射
- Camera perspective 深度重映射到 Vulkan [0,1]（公式与 ortho 不同：
M22=M22*0.5-0.5, M32*=0.5）；光源 ortho remap 用 M32=M32*0.5+0.5
引擎配套：
- TransformComponent 重构为 position/rotation/scale + Compose()
- Texture::CreateSolidColor / Model::CreatePlane 程序化资产
（两段式上传公共路径），AssetManager.CreatePlane 带缓存入口
- RG 新增 GetPhysicalView(h, slot)：按帧槽位把 RG 资源绑进外部描述符
（阴影图 per-slot 物理镜像各自绑定）
验证：validation 0 error 0 warning，阴影随实体旋转正确
57 lines
1.6 KiB
GLSL
57 lines
1.6 KiB
GLSL
#version 450
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const int MAX_LIGHTS = 4;
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struct Light {
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vec4 direction;
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vec4 color;
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};
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layout(location = 0) in vec2 fragUV;
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layout(location = 1) in vec3 fragNormal;
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layout(location = 2) in vec3 fragWorldPos;
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layout(location = 3) in vec3 fragLightSpacePos;
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layout(location = 0) out vec4 outColor;
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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;
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vec4 ambientColor;
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Light lights[MAX_LIGHTS];
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} ubo;
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layout(set = 1, binding = 0) uniform sampler2D texSampler;
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layout(set = 2, binding = 0) uniform sampler2D shadowMap;
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// 第 0 盏灯（KeyLight）的阴影因子：0.3 影中 / 1.0 受光。
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// 采样器为 clamp-to-border 白色：光视锥外自动 1.0（无阴影）。
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float ShadowFactor(vec3 N) {
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// NDC [-1,1] → UV [0,1]（ortho 的 w=1，无需透视除法）
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vec2 uv = fragLightSpacePos.xy * 0.5 + 0.5;
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float closest = texture(shadowMap, uv).r;
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// 斜率缩放 bias：掠射面用更大的 bias 压 acne
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vec3 L = normalize(-ubo.lights[0].direction.xyz);
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float bias = max(0.004 * (1.0 - dot(N, L)), 0.0012);
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return (fragLightSpacePos.z - bias > closest) ? 0.3 : 1.0;
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}
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void main() {
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vec3 albedo = texture(texSampler, fragUV).rgb;
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vec3 N = normalize(fragNormal);
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vec3 result = ubo.ambientColor.rgb * albedo;
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for (int i = 0; i < MAX_LIGHTS; ++i) {
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vec3 L = normalize(-ubo.lights[i].direction.xyz);
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float diff = max(dot(N, L), 0.0);
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float shade = (i == 0) ? ShadowFactor(N) : 1.0;
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result += ubo.lights[i].color.rgb * ubo.lights[i].color.a * diff * albedo * shade;
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}
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outColor = vec4(result, 1.0);
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}
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