From 66ba1c4c8e840bb5e9da23e2b5772cd24b23714f Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Tue, 13 Jul 2021 02:14:16 +0300
Subject: DRTVWR-542 WIP Fixed Stride

---
 indra/llmeshoptimizer/llmeshoptimizer.cpp | 19 +++++++++----------
 indra/llmeshoptimizer/llmeshoptimizer.h   |  7 +++++--
 2 files changed, 14 insertions(+), 12 deletions(-)

(limited to 'indra/llmeshoptimizer')

diff --git a/indra/llmeshoptimizer/llmeshoptimizer.cpp b/indra/llmeshoptimizer/llmeshoptimizer.cpp
index 0ddaa82c3d..09fa7cb235 100644
--- a/indra/llmeshoptimizer/llmeshoptimizer.cpp
+++ b/indra/llmeshoptimizer/llmeshoptimizer.cpp
@@ -44,18 +44,17 @@ void LLMeshOptimizer::generateShadowIndexBuffer(U16 *destination,
     const U16 *indices,
     U64 index_count,
     const LLVector4a *vertex_positions,
-    U64 vertex_count
+    U64 vertex_count,
+    U64 vertex_positions_stride
 )
 {
-    const size_t vertex_stride = 4; // should be either 0 or 4
-
     meshopt_generateShadowIndexBuffer<unsigned short>(destination,
         indices,
         index_count,
         (const float*)vertex_positions, // verify that it is correct to convert to float
         vertex_count,
         sizeof(LLVector4a),
-        vertex_stride
+        vertex_positions_stride
         );
 }
 
@@ -65,19 +64,19 @@ U64 LLMeshOptimizer::simplify(U16 *destination,
                               U64 index_count,
                               const LLVector4a *vertex_positions,
                               U64 vertex_count,
+                              U64 vertex_positions_stride,
                               U64 target_index_count,
                               F32 target_error,
                               F32* result_error
     )
 {
-    const size_t vertex_stride = 4; // should be either 0 or 4
 
     return meshopt_simplify<unsigned short>(destination,
                                  indices,
                                  index_count,
-                                 (const float*)vertex_positions, // verify that it is correct to convert to float
+                                 (const float*)vertex_positions,
                                  vertex_count,
-                                 vertex_stride, 
+                                 vertex_positions_stride, 
                                  target_index_count,
                                  target_error,
                                  result_error
@@ -90,18 +89,18 @@ U64 LLMeshOptimizer::simplifySloppy(U16 *destination,
                               U64 index_count,
                               const LLVector4a *vertex_positions,
                               U64 vertex_count,
+    U64 vertex_positions_stride,
                               U64 target_index_count,
                               F32 target_error,
                               F32* result_error
     )
 {
-    const size_t vertex_stride = 4; // should be either 0 or 4
     return meshopt_simplifySloppy<unsigned short>(destination,
                                  indices,
                                  index_count,
-                                 (const float*)vertex_positions, // verify that it is correct to convert to float
+                                 (const float*)vertex_positions,
                                  vertex_count,
-                                 vertex_stride, 
+                                 vertex_positions_stride, 
                                  target_index_count,
                                  target_error,
                                  result_error
diff --git a/indra/llmeshoptimizer/llmeshoptimizer.h b/indra/llmeshoptimizer/llmeshoptimizer.h
index 744856361c..1aa02372fa 100644
--- a/indra/llmeshoptimizer/llmeshoptimizer.h
+++ b/indra/llmeshoptimizer/llmeshoptimizer.h
@@ -36,12 +36,13 @@ public:
     LLMeshOptimizer();
     ~LLMeshOptimizer();
 
-    static void LLMeshOptimizer::generateShadowIndexBuffer(
+    static void generateShadowIndexBuffer(
         U16 *destination,
         const U16 *indices,
         U64 index_count,
         const LLVector4a *vertex_positions,
-        U64 vertex_count);
+        U64 vertex_count,
+        U64 vertex_positions_stride);
 
     // returns amount of indices in destiantion
     // result_error returns how far from original the model is in % if not NULL
@@ -51,6 +52,7 @@ public:
         U64 index_count,
         const LLVector4a *vertex_positions,
         U64 vertex_count,
+        U64 vertex_positions_stride,
         U64 target_index_count,
         F32 target_error,
         F32* result_error);
@@ -63,6 +65,7 @@ public:
         U64 index_count,
         const LLVector4a *vertex_positions,
         U64 vertex_count,
+        U64 vertex_positions_stride,
         U64 target_index_count,
         F32 target_error,
         F32* result_error);
-- 
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