From 329bea7124a33759e40f89c3d824faf332f9089c Mon Sep 17 00:00:00 2001
From: "R.E. Kovalev" <re.kovalev@gmail.com>
Date: Mon, 3 Apr 2023 18:19:18 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9E=D0=B1=D0=B2=D0=BE=D0=B4=D0=BA=D0=B0=20?=
 =?UTF-8?q?=D0=B2=D1=8B=D0=B1=D1=80=D0=B0=D0=BD=D0=BD=D0=BE=D0=B3=D0=BE=20?=
 =?UTF-8?q?=D0=BE=D0=B1=D1=8A=D0=B5=D0=BA=D1=82=D0=B0?=
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---
 shaders/lighting.frag | 20 ++++++++++++++++++++
 src/main.cpp          |  5 ++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/shaders/lighting.frag b/shaders/lighting.frag
index 87944d3..9f83932 100644
--- a/shaders/lighting.frag
+++ b/shaders/lighting.frag
@@ -40,6 +40,9 @@ uniform sampler2D gAmbientSpecular;
 uniform sampler2DArray sunShadowDepth;
 uniform samplerCubeArray pointShadowDepth;
 uniform sampler2D ssao;
+uniform usampler2D gID;
+
+uniform uvec3 selectedID;
 
 layout(std140, binding = 4) uniform gamma
 {
@@ -198,4 +201,21 @@ void main()
 
     // Применение гамма-коррекции
     color.rgb = pow(color.rgb, vec3(inv_gamma));
+
+    vec3 ID = texture(gID, texCoord).rgb;
+    // Обводка выбранного объекта
+    if (length(selectedID.rg) > 0 && selectedID.rg == ID.rg && ID.b == 0)
+    {
+        int border_width = 3;
+        vec2 size = 1.0f / textureSize(gID, 0);
+        for (int i = -border_width; i <= +border_width; i++)
+            for (int j = -border_width; j <= +border_width; j++)
+            {
+                if (i == 0 && j == 0)
+                    continue;
+
+                if (texture(gID, texCoord + vec2(i, j) * size).rg != selectedID.rg)
+                    color.rgb = vec3(1.0);
+            }
+    }
 } 
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index a299e1e..dbce366 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -209,7 +209,7 @@ int main(void)
     lightShader.load(GL_FRAGMENT_SHADER, "shaders/lighting.frag");
     lightShader.link();
     // Привязка текстур
-    const char* gtextures_shader_names[]  = {"gPosition", "gNormal", "gDiffuseP", "gAmbientSpecular", "sunShadowDepth", "pointShadowDepth", "ssao"};
+    const char* gtextures_shader_names[]  = {"gPosition", "gNormal", "gDiffuseP", "gAmbientSpecular", "sunShadowDepth", "pointShadowDepth", "ssao", "gID"};
     lightShader.bindTextures(gtextures_shader_names, sizeof(gtextures_shader_names)/sizeof(const char*));
     // Загрузка данных о границах каскадов
     glUniform1fv(lightShader.getUniformLoc("camera_cascade_distances"), CAMERA_CASCADE_COUNT, &camera_cascade_distances[1]);
@@ -529,6 +529,9 @@ int main(void)
         gNormal.use();
         gDiffuseP.use();
         gAmbientSpecular.use();
+        gID.use();
+        // Идентификатор выбранного объекта для обводки
+        glUniform3uiv(lightShader.getUniformLoc("selectedID"), 1, (GLuint*) &selected);
         // Подключаем текстуры теней
         sunShadowDepth.use();
         pointShadowDepth.use();