Added gbuffer skinned version

2026-09-04 11:35:06 +03:00 · 2023-08-12 23:35:16 -04:00
parent 10c16ee089
commit cabed86076
1 changed files with 133 additions and 0 deletions
--- a/Editor/resources/Shaders/gbuffer_skinned.shader
+++ b/Editor/resources/Shaders/gbuffer_skinned.shader
@@ -0,0 +1,133 @@
+#shader vertex
+#version 460 core
+
+layout(location = 0) in vec3 VertexPosition;
+layout(location = 1) in vec2 UVPosition;
+layout(location = 2) in vec3 Normal;
+layout(location = 3) in vec3 Tangent;
+layout(location = 4) in vec3 Bitangent;
+layout(location = 5) in ivec4 BoneIDs;
+layout(location = 6) in vec4 Weights;
+
+uniform mat4 u_Model;
+uniform mat4 u_View;
+uniform mat4 u_Projection;
+
+const int MAX_BONES = 100;
+const int MAX_BONES_INFLUENCE = 4;
+uniform mat4 u_FinalBonesMatrice[MAX_BONES];
+
+out vec3 FragPos;
+out mat3 TBN;
+out vec2 UV;
+
+void main()
+{
+    vec3 T = normalize((u_Model * vec4(Tangent, 0.0f)).xyz);
+    vec3 N = normalize((u_Model * vec4(Normal, 0.0f)).xyz);
+    vec3 B = normalize((u_Model * vec4(Bitangent, 0.0f)).xyz);
+    TBN = mat3(T, B, N);
+
+    UV = UVPosition;
+
+    vec4 totalPosition = vec4(0.0f);
+    for (int i = 0; i < MAX_BONES_INFLUENCE; i++)
+    {
+        if (BonesIDs[i] == -1)
+        {
+            continue;
+        }
+
+        if (BonesIDs[i] >= MAX_BONES)
+        {
+            totalPosition = vec4(VertexPosition, 1.0f);
+        }
+
+        vec4 localPositon = u_FinalBonesMatrice[BoneIDs[i]] * vec4(VertexPosition, 1.0f);
+        totalPosition += localPosition * Weights[i];
+        // vec3 localNormal = mat3(u_FinalBonesMatrice[BoneIDs[i]]) * Normal;
+    }
+
+    gl_Position = u_Projection * u_View * u_Model * vec4(totalPosition, 1.0f);
+}
+
+#shader fragment
+#version 460 core
+
+layout(location = 0) out vec4 gAlbedo;
+layout(location = 1) out vec4 gNormal;
+layout(location = 2) out vec4 gMaterial;
+layout(location = 3) out int gEntityID;
+
+in vec3 FragPos;
+in vec2 UV;
+in mat3 TBN;
+
+// Material
+uniform sampler2D m_Albedo;
+uniform sampler2D m_Metalness;
+uniform sampler2D m_Roughness;
+uniform sampler2D m_AO;
+uniform sampler2D m_Normal;
+uniform sampler2D m_Displacement;
+uniform int u_EntityID;
+
+layout(std140, binding = 32) uniform u_MaterialUniform
+{
+    int u_HasAlbedo;
+    vec3 m_AlbedoColor;     //  16 byte
+    int u_HasMetalness;     //  32 byte
+    float u_MetalnessValue; //  36 byte
+    int u_HasRoughness;     //  40 byte
+    float u_RoughnessValue; //  44 byte
+    int u_HasAO;            //  48 byte
+    float u_AOValue;        //  52 byte
+    int u_HasNormal;        //  56 byte
+    int u_HasDisplacement;  //  60 byte
+    int u_Unlit;
+};
+
+void main()
+{
+    // Normal
+    vec3 normal = vec3(0.5, 0.5, 1.0);
+    if (u_HasNormal == 1)
+        normal = texture(m_Normal, UV).rgb;
+    normal = normal * 2.0 - 1.0;
+    normal = TBN * normalize(normal);
+    gNormal = vec4(normal / 2.0 + 0.5, 1.0);
+
+    // Albedo
+    gAlbedo = vec4(m_AlbedoColor, 1.0);
+    if (u_HasAlbedo == 1)
+    {
+        vec4 albedoSample = texture(m_Albedo, UV);
+        gAlbedo.rgb = albedoSample.rgb * m_AlbedoColor.rgb;
+        gAlbedo.a = albedoSample.a;
+
+        if (albedoSample.a < 0.1f)
+        {
+            discard;
+        }
+    }
+
+    // Material
+    float finalMetalness = u_MetalnessValue;
+    if (u_HasMetalness == 1)
+        finalMetalness = texture(m_Metalness, UV).r;
+
+    float finalAO = u_AOValue;
+    if (u_HasAO == 1)
+        finalAO = texture(m_AO, UV).r;
+
+    float finalRoughness = u_RoughnessValue;
+    if (u_HasRoughness == 1)
+        finalRoughness = texture(m_Roughness, UV).r;
+
+    gMaterial = vec4(0, 0, 0, 1);
+    gMaterial.r = finalMetalness;
+    gMaterial.g = finalAO;
+    gMaterial.b = finalRoughness;
+
+    gEntityID = int(u_EntityID);
+}