atdunbg
27b7f8785c
- Velocity buffer：Forward 第二颜色附件，vertex 计算 clip 空间运动向量 （UBO 尾部追加 projNoJitter/prevView/prevProj；上一帧实例矩阵 SSBO Set0 binding2，与当前实例数组平行对齐——转动的物体速度正确不鬼影） - 子像素抖动：SceneRenderer Halton(2,3)×8 序列，抖动只进光栅化投影 - TAA resolve pass：velocity 反推历史位置 + 3×3 邻域 clamp 去鬼影 + mix(cur,hist,0.9) 时域累积；TAAColor 自引用历史 - RG 历史读补 post-barrier：采样后恢复镜像 resting layout（TAA 的历史 是 ColorAttachment layout，不恢复则下帧 entry oldLayout 脱节） - 管线：Forward(HDR+Velocity) → TAA(TAAColor) → Bloom/Tonemap 改源 TAAColor - 编译零错误、validation 零警告、8 秒冒烟通过（10 pass 全活跃）
60 lines
1.8 KiB
GLSL
60 lines
1.8 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 = 4) in vec2 fragVelocity;
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layout(location = 0) out vec4 outColor;
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layout(location = 1) out vec2 outVelocity; // TAA velocity 附件
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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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outVelocity = fragVelocity;
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}
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