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Fifo recorder: Fix incorrect calculation of the size of an array 

The old calculation was stride * (max_index + 1), which fails if stride is less than the size of a component (for instance, if float XYZ positions are used, and the stride was set to 4 (i.e. sizeof(float)) instead of 12 (i.e. 3 * sizeof(float)), it would be missing the last 8 bytes of the final element in the array.  Or, if stride was set to 0, then no bytes would be recorded at all (though that's not a useful configuration so it's unlikely to actually exist).

I'm not aware of any games affected by this issue.
This commit is contained in:
Pokechu22 2022-05-18 21:10:46 -07:00
parent c9ff2a9b3d
commit bac75de79c
1 changed files with 27 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
Source/Core/Core/FifoPlayer/FifoRecorder.cpp
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@ -52,8 +52,8 @@ public:
private:
void ProcessVertexComponent(CPArray array_index, VertexComponentFormat array_type,
u32 component_offset, u32 vertex_size, u16 num_vertices,
const u8* vertex_data, u32 byte_offset = 0);
u32 component_offset, u32 component_size, u32 vertex_size,
u16 num_vertices, const u8* vertex_data, u32 byte_offset = 0);
FifoRecorder* const m_owner;
CPState m_cpmem;
@ -91,13 +91,18 @@ void FifoRecorder::FifoRecordAnalyzer::OnPrimitiveCommand(OpcodeDecoder::Primiti
}
const u32 pos_size = VertexLoader_Position::GetSize(vtx_desc.low.Position, vtx_attr.g0.PosFormat,
vtx_attr.g0.PosElements);
ProcessVertexComponent(CPArray::Position, vtx_desc.low.Position, offset, vertex_size,
num_vertices, vertex_data);
const u32 pos_direct_size = VertexLoader_Position::GetSize(
VertexComponentFormat::Direct, vtx_attr.g0.PosFormat, vtx_attr.g0.PosElements);
ProcessVertexComponent(CPArray::Position, vtx_desc.low.Position, offset, pos_direct_size,
vertex_size, num_vertices, vertex_data);
offset += pos_size;
const u32 norm_size =
VertexLoader_Normal::GetSize(vtx_desc.low.Normal, vtx_attr.g0.NormalFormat,
vtx_attr.g0.NormalElements, vtx_attr.g0.NormalIndex3);
const u32 norm_direct_size =
VertexLoader_Normal::GetSize(VertexComponentFormat::Direct, vtx_attr.g0.NormalFormat,
vtx_attr.g0.NormalElements, vtx_attr.g0.NormalIndex3);
if (vtx_attr.g0.NormalIndex3 && IsIndexed(vtx_desc.low.Normal) &&
vtx_attr.g0.NormalElements == NormalComponentCount::NTB)
{
@ -115,17 +120,17 @@ void FifoRecorder::FifoRecordAnalyzer::OnPrimitiveCommand(OpcodeDecoder::Primiti
// results if the normal array's stride was something other than 12, for instance if vertices
// were contiguous in main memory instead of individual components being used).
const u32 element_size = GetElementSize(vtx_attr.g0.NormalFormat) * 3;
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset, vertex_size, num_vertices,
vertex_data);
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset + index_size, vertex_size,
num_vertices, vertex_data, element_size);
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset, element_size, vertex_size,
num_vertices, vertex_data);
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset + index_size, element_size,
vertex_size, num_vertices, vertex_data, element_size);
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset + 2 * index_size,
vertex_size, num_vertices, vertex_data, 2 * element_size);
element_size, vertex_size, num_vertices, vertex_data, 2 * element_size);
}
else
{
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset, vertex_size, num_vertices,
vertex_data);
ProcessVertexComponent(CPArray::Normal, vtx_desc.low.Normal, offset, norm_direct_size,
vertex_size, num_vertices, vertex_data);
}
offset += norm_size;
@ -133,16 +138,20 @@ void FifoRecorder::FifoRecordAnalyzer::OnPrimitiveCommand(OpcodeDecoder::Primiti
{
const u32 color_size =
VertexLoader_Color::GetSize(vtx_desc.low.Color[i], vtx_attr.GetColorFormat(i));
ProcessVertexComponent(CPArray::Color0 + i, vtx_desc.low.Color[i], offset, vertex_size,
num_vertices, vertex_data);
const u32 color_direct_size =
VertexLoader_Color::GetSize(VertexComponentFormat::Direct, vtx_attr.GetColorFormat(i));
ProcessVertexComponent(CPArray::Color0 + i, vtx_desc.low.Color[i], offset, color_direct_size,
vertex_size, num_vertices, vertex_data);
offset += color_size;
}
for (u32 i = 0; i < vtx_desc.high.TexCoord.Size(); i++)
{
const u32 tc_size = VertexLoader_TextCoord::GetSize(
vtx_desc.high.TexCoord[i], vtx_attr.GetTexFormat(i), vtx_attr.GetTexElements(i));
ProcessVertexComponent(CPArray::TexCoord0 + i, vtx_desc.high.TexCoord[i], offset, vertex_size,
num_vertices, vertex_data);
const u32 tc_direct_size = VertexLoader_TextCoord::GetSize(
VertexComponentFormat::Direct, vtx_attr.GetTexFormat(i), vtx_attr.GetTexElements(i));
ProcessVertexComponent(CPArray::TexCoord0 + i, vtx_desc.high.TexCoord[i], offset,
tc_direct_size, vertex_size, num_vertices, vertex_data);
offset += tc_size;
}
@ -151,8 +160,8 @@ void FifoRecorder::FifoRecordAnalyzer::OnPrimitiveCommand(OpcodeDecoder::Primiti
// If a component is indexed, the array it indexes into for data must be saved.
void FifoRecorder::FifoRecordAnalyzer::ProcessVertexComponent(
CPArray array_index, VertexComponentFormat array_type, u32 component_offset, u32 vertex_size,
u16 num_vertices, const u8* vertex_data, u32 byte_offset)
CPArray array_index, VertexComponentFormat array_type, u32 component_offset, u32 component_size,
u32 vertex_size, u16 num_vertices, const u8* vertex_data, u32 byte_offset)
{
// Skip if not indexed array
if (!IsIndexed(array_type))
@ -193,7 +202,7 @@ void FifoRecorder::FifoRecordAnalyzer::ProcessVertexComponent(
}
const u32 array_start = m_cpmem.array_bases[array_index] + byte_offset;
const u32 array_size = m_cpmem.array_strides[array_index] * (max_index + 1);
const u32 array_size = m_cpmem.array_strides[array_index] * max_index + component_size;
m_owner->UseMemory(array_start, array_size, MemoryUpdate::VERTEX_STREAM);
}