From ebacb9540c9f35b16e645670ce2965041b91bf70 Mon Sep 17 00:00:00 2001
From: Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>
Date: Sun, 27 Apr 2025 02:09:42 +0200
Subject: [PATCH] index buffer

---
 main.cpp  | 26 ++------------------------
 test.mesh | 16 ++++++++--------
 2 files changed, 10 insertions(+), 32 deletions(-)

diff --git a/main.cpp b/main.cpp
index 2fbdfbe..ce07ec2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -10,28 +10,6 @@ typedef VulkanShader<"test2.spirv", "main", VK_SHADER_STAGE_FRAGMENT_BIT, 0, {}>
 typedef VulkanPipeline<MeshShader, FragmentShader> Pipeline;
 
 int main() {
-    // WindowWaylandWayland window("test", 128, 128);
-    // UiElement test(
-    //     0.5, //anchorX
-    //     0.5, //anchorY
-    //     2,  //bufferWidth
-    //     1,  //bufferHeight
-    //     std::uint32_t(30), //absoluteSizeX
-    //     std::uint32_t(30), //absoluteSizeY
-    //     0.5, //anchorOffsetX
-    //     0.5, //anchorOffsetY
-    //     0,  //z
-    //     false //ignoreScaling
-    // );
-    // window.scale = 1;
-    // test.buffer = {{255, 0, 0 ,255}, {0, 255, 0 ,255}};
-    // window.elements.AddComponent(&test);
-    // window.Start();
-    // while(true) {
-
-    // }
-
-    //WriteDescriptor(0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor);
     VulkanDevice::CreateDevice();
     MeshShader::CreateShader();
     FragmentShader::CreateShader();
@@ -50,8 +28,8 @@ int main() {
     mesh.verticies.value[2] = {1.0f,  1.0f, 0.0f, 1.0f};
 
     mesh.indicies.value[0] = 0;
-    mesh.indicies.value[0] = 1;
-    mesh.indicies.value[0] = 2;
+    mesh.indicies.value[1] = 1;
+    mesh.indicies.value[2] = 2;
     test.WriteDescriptor(0, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1, &mesh.verticies.descriptor);
     test.WriteDescriptor(0, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 2, &mesh.indicies.descriptor);
 
diff --git a/test.mesh b/test.mesh
index 3f7de2d..52d99ee 100644
--- a/test.mesh
+++ b/test.mesh
@@ -40,14 +40,14 @@ const vec4[3] colors = {
 void main()
 {
 	uint iid = gl_LocalInvocationID.x;
-
 	SetMeshOutputsEXT(3, 1);
 	mat4 mvp = ubo.projection * ubo.view * ubo.model;
-	gl_MeshVerticesEXT[0].gl_Position = mvp * vertex.pos[0];
-	gl_MeshVerticesEXT[1].gl_Position = mvp * vertex.pos[1];
-	gl_MeshVerticesEXT[2].gl_Position = mvp * vertex.pos[2];
-	vertexOutput[0].color = colors[0];
-	vertexOutput[1].color = colors[1];
-	vertexOutput[2].color = colors[2];
-	gl_PrimitiveTriangleIndicesEXT[gl_LocalInvocationIndex] =  uvec3(0, 1, 2);
+	uint triangleID = gl_LocalInvocationIndex.x * 3;
+	gl_MeshVerticesEXT[triangleID].gl_Position = mvp * vertex.pos[index.index[triangleID]];
+	gl_MeshVerticesEXT[triangleID+1].gl_Position = mvp * vertex.pos[index.index[triangleID+1]];
+	gl_MeshVerticesEXT[triangleID+2].gl_Position = mvp * vertex.pos[index.index[triangleID+2]];
+	vertexOutput[triangleID].color = colors[triangleID];
+	vertexOutput[triangleID+1].color = colors[triangleID+1];
+	vertexOutput[triangleID+2].color = colors[triangleID+2];
+	gl_PrimitiveTriangleIndicesEXT[gl_LocalInvocationIndex.x] =  uvec3(index.index[triangleID], index.index[triangleID+1], index.index[triangleID+2]);
 }