From 8162ca201e319cd6c98829f255b530a79e078015 Mon Sep 17 00:00:00 2001
From: karl <karl.bittner@hexaquo.at>
Date: Sun, 30 May 2021 20:02:12 +0200
Subject: [PATCH] Tessellation on the quad mesh works!

---
 Shader/terrain.tcs        | 8 ++++----
 include/Gedeng/QuadMesh.h | 2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Shader/terrain.tcs b/Shader/terrain.tcs
index 55adbf2..ecd980d 100644
--- a/Shader/terrain.tcs
+++ b/Shader/terrain.tcs
@@ -16,8 +16,8 @@ void main() {
     tc_out[gl_InvocationID].texture_coordinate = tc_in[gl_InvocationID].texture_coordinate;
     tc_out[gl_InvocationID].position = tc_in[gl_InvocationID].position;
 
-    gl_TessLevelInner[0] = 1;
-    gl_TessLevelOuter[0] = 1;
-    gl_TessLevelOuter[1] = 1;
-    gl_TessLevelOuter[2] = 1;
+    gl_TessLevelInner[0] = 12;
+    gl_TessLevelOuter[0] = 12;
+    gl_TessLevelOuter[1] = 12;
+    gl_TessLevelOuter[2] = 12;
 }
\ No newline at end of file
diff --git a/include/Gedeng/QuadMesh.h b/include/Gedeng/QuadMesh.h
index 0a6d120..a8d3bbd 100644
--- a/include/Gedeng/QuadMesh.h
+++ b/include/Gedeng/QuadMesh.h
@@ -113,6 +113,8 @@ class QuadMesh : public Mesh {
     void render_patches(Shader &shader) const {
         shader.setMat4("model", get_matrix());
 
+        glPatchParameteri(GL_PATCH_VERTICES, 3);
+
         glBindVertexArray(quadVAO);
         glDrawArrays(GL_PATCHES, 0, 6);
         glBindVertexArray(0);