Ch5: reduce the number of thread groups in 09_ComputeMesh so that i…

…t can run on Intel GPUs
PacktPublishing · Apr 12, 2024 · 0e74afa · 0e74afa
1 parent 03fcfee
commit 0e74afa
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/Chapter05/09_ComputeMesh/src/main.cpp b/Chapter05/09_ComputeMesh/src/main.cpp
@@ -13,8 +13,8 @@ float g_AnimationSpeed = 1.0f;
 
 bool g_UseColoredMesh = false;
 
-constexpr uint32_t kNumU = 1024;
-constexpr uint32_t kNumV = 1024;
+constexpr uint32_t kNumU = 768;
+constexpr uint32_t kNumV = 768;
 
 void generateIndices(uint32_t* indices)
 {
@@ -234,7 +234,7 @@ int main()
 
         buf.cmdBindComputePipeline(pipelineComputeMesh);
         buf.cmdPushConstants(pc);
-        buf.cmdDispatchThreadGroups({ .width = (kNumU * kNumV) / 2 }, { .buffers = { { lvk::BufferHandle(bufferVertex) } } });
+        buf.cmdDispatchThreadGroups({ .width = (kNumU * kNumV) / 16 }, { .buffers = { { lvk::BufferHandle(bufferVertex) } } });
         if (!g_UseColoredMesh) {
           buf.cmdBindComputePipeline(pipelineComputeTexture);
           buf.cmdDispatchThreadGroups({ .width = 1024 / 16, .height = 1024 / 16 }, { .textures = { { lvk::TextureHandle(texture) } } });

diff --git a/Chapter05/09_ComputeMesh/src/main_mesh.comp b/Chapter05/09_ComputeMesh/src/main_mesh.comp
@@ -1,5 +1,5 @@
 //
-layout (local_size_x = 2, local_size_y = 1, local_size_z = 1) in;
+layout (local_size_x = 16, local_size_y = 1, local_size_z = 1) in;
 
 #include <Chapter05/09_ComputeMesh/src/common.sp>