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authorFernando S <fsahmkow27@gmail.com>2023-04-24 12:36:24 +0200
committerGitHub <noreply@github.com>2023-04-24 12:36:24 +0200
commit2311fa7c840d514bb39786208ff50b0018db71ff (patch)
tree0c6d424ceb552290766b523f1bfed4cf3ff421c1 /src/video_core/engines
parentMerge pull request #10074 from Kelebek1/fermi_blit (diff)
parentmaxwell_3d: fix out of bounds array access in size estimation (diff)
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Diffstat (limited to 'src/video_core/engines')
-rw-r--r--src/video_core/engines/maxwell_3d.cpp10
1 files changed, 6 insertions, 4 deletions
diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 614d61db4..0932fadc2 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -4,6 +4,7 @@
#include <cstring>
#include <optional>
#include "common/assert.h"
+#include "common/bit_util.h"
#include "common/scope_exit.h"
#include "common/settings.h"
#include "core/core.h"
@@ -259,12 +260,13 @@ u32 Maxwell3D::GetMaxCurrentVertices() {
size_t Maxwell3D::EstimateIndexBufferSize() {
GPUVAddr start_address = regs.index_buffer.StartAddress();
GPUVAddr end_address = regs.index_buffer.EndAddress();
- static constexpr std::array<size_t, 4> max_sizes = {
- std::numeric_limits<u8>::max(), std::numeric_limits<u16>::max(),
- std::numeric_limits<u32>::max(), std::numeric_limits<u32>::max()};
+ static constexpr std::array<size_t, 3> max_sizes = {std::numeric_limits<u8>::max(),
+ std::numeric_limits<u16>::max(),
+ std::numeric_limits<u32>::max()};
const size_t byte_size = regs.index_buffer.FormatSizeInBytes();
+ const size_t log2_byte_size = Common::Log2Ceil64(byte_size);
return std::min<size_t>(
- memory_manager.GetMemoryLayoutSize(start_address, byte_size * max_sizes[byte_size]) /
+ memory_manager.GetMemoryLayoutSize(start_address, byte_size * max_sizes[log2_byte_size]) /
byte_size,
static_cast<size_t>(end_address - start_address));
}