Initial commit: Minecraft 光追着色器包（从零实现的 path tracing）

2026-09-19 12:06:22 +08:00
commit 59e30822f8
314 changed files with 9259 additions and 0 deletions
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+// MinecraftPT — Terrain Vertex Shader
+// Handles terrain, block entities, damaged blocks
+
+#include "/Lib/Settings.glsl"
+#include "/Lib/Utilities.glsl"
+
+out vec2 texcoord;
+out vec3 worldPos;
+out vec3 worldNormal;
+out vec3 vertexNormal;
+out vec4 color;
+out vec2 lightmap;
+flat out int blockId;
+flat out float blockLightLevel;
+
+#ifdef WAVING_PLANTS
+#include "/Lib/IndividualFunctions/WavingPlants.glsl"
+#endif
+
+void main(){
+	// World position
+	vec4 viewPos = gl_ModelViewMatrix * gl_Vertex;
+	vec4 wPos = gbufferModelViewInverse * viewPos;
+	worldPos = wPos.xyz;
+
+	// Normals
+	vertexNormal = normalize(gl_NormalMatrix * gl_Normal);
+	worldNormal = normalize(mat3(gbufferModelViewInverse) * vertexNormal);
+	worldNormal = normalize(worldNormal);
+
+	// Lightmap (blocklight, skylight)
+	lightmap = gl_MultiTexCoord1.xy / 240.0;
+	lightmap = saturate(lightmap);
+
+	// Block ID from mc_Entity
+	blockId = int(mc_Entity.x + 0.5);
+	blockLightLevel = at_midBlock.w;
+
+	// Waving plants
+	#ifdef WAVING_PLANTS
+		if (blockId == 4){
+			WavingPlants(wPos, lightmap.y);
+		}
+	#endif
+
+	texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
+	color = gl_Color;
+
+	gl_Position = gl_ProjectionMatrix * viewPos;
+	gl_Position.xy += taaJitter * gl_Position.w;
+}