From 52544933d294b5bce1bd8e6b57478c2767f73606 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Sun, 27 Aug 2023 06:40:31 +0200
Subject: Maxwell3D: Improve Index buffer size estimation.

---
 src/video_core/engines/maxwell_3d.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/video_core/engines/maxwell_3d.cpp')

diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index c3696096d..06e349e43 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -257,6 +257,7 @@ u32 Maxwell3D::GetMaxCurrentVertices() {
         const u32 address_size = static_cast<u32>(gpu_addr_end - gpu_addr_begin);
         num_vertices = std::max(
             num_vertices, address_size / std::max(attribute.SizeInBytes(), array.stride.Value()));
+        break;
     }
     return num_vertices;
 }
@@ -269,10 +270,13 @@ size_t Maxwell3D::EstimateIndexBufferSize() {
                                                         std::numeric_limits<u32>::max()};
     const size_t byte_size = regs.index_buffer.FormatSizeInBytes();
     const size_t log2_byte_size = Common::Log2Ceil64(byte_size);
+    const size_t cap{GetMaxCurrentVertices() * 3 * byte_size};
+    const size_t lower_cap =
+        std::min<size_t>(static_cast<size_t>(end_address - start_address), cap);
     return std::min<size_t>(
         memory_manager.GetMemoryLayoutSize(start_address, byte_size * max_sizes[log2_byte_size]) /
             byte_size,
-        static_cast<size_t>(end_address - start_address));
+        lower_cap);
 }
 
 u32 Maxwell3D::ProcessShadowRam(u32 method, u32 argument) {
-- 
cgit v1.2.3