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VideoCommon/IndexGenerator: Eliminate static state

Browse source 
Now that we've extracted all of the stateless functions that can be
hidden, it's time to make the index generator a regular class with
active data members.

This can just be a member that sits within the vertex manager base
class. By deglobalizing the state of the index generator we also get rid
of the wonky dual-initializing that was going on within the OpenGL
backend.

Since the renderer is always initialized before the vertex manager, we
now only call Init() once throughout the execution lifecycle.
This commit is contained in:
Lioncash 2019-12-05 10:01:33 -05:00
commit 10f7674651
12 changed files with 69 additions and 64 deletions
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63
Source/Core/VideoCommon/IndexGenerator.cpp
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@ -17,9 +17,6 @@ namespace
{
constexpr u16 s_primitive_restart = UINT16_MAX;
using PrimitiveFunction = u16*(*)(u16*, u32, u32);
std::array<PrimitiveFunction, 8> s_primitive_table;
template <bool pr>
u16* WriteTriangle(u16* index_ptr, u32 index1, u32 index2, u32 index3)
{
@ -204,56 +201,54 @@ u16* AddPoints(u16* index_ptr, u32 num_verts, u32 index)
}
} // Anonymous namespace
// Init
u16* IndexGenerator::index_buffer_current;
u16* IndexGenerator::BASEIptr;
u32 IndexGenerator::base_index;
void IndexGenerator::Init()
{
if (g_Config.backend_info.bSupportsPrimitiveRestart)
{
s_primitive_table[OpcodeDecoder::GX_DRAW_QUADS] = AddQuads<true>;
s_primitive_table[OpcodeDecoder::GX_DRAW_QUADS_2] = AddQuads_nonstandard<true>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLES] = AddList<true>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_STRIP] = AddStrip<true>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_FAN] = AddFan<true>;
m_primitive_table[OpcodeDecoder::GX_DRAW_QUADS] = AddQuads<true>;
m_primitive_table[OpcodeDecoder::GX_DRAW_QUADS_2] = AddQuads_nonstandard<true>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLES] = AddList<true>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_STRIP] = AddStrip<true>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_FAN] = AddFan<true>;
}
else
{
s_primitive_table[OpcodeDecoder::GX_DRAW_QUADS] = AddQuads<false>;
s_primitive_table[OpcodeDecoder::GX_DRAW_QUADS_2] = AddQuads_nonstandard<false>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLES] = AddList<false>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_STRIP] = AddStrip<false>;
s_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_FAN] = AddFan<false>;
m_primitive_table[OpcodeDecoder::GX_DRAW_QUADS] = AddQuads<false>;
m_primitive_table[OpcodeDecoder::GX_DRAW_QUADS_2] = AddQuads_nonstandard<false>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLES] = AddList<false>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_STRIP] = AddStrip<false>;
m_primitive_table[OpcodeDecoder::GX_DRAW_TRIANGLE_FAN] = AddFan<false>;
}
s_primitive_table[OpcodeDecoder::GX_DRAW_LINES] = AddLineList;
s_primitive_table[OpcodeDecoder::GX_DRAW_LINE_STRIP] = AddLineStrip;
s_primitive_table[OpcodeDecoder::GX_DRAW_POINTS] = AddPoints;
m_primitive_table[OpcodeDecoder::GX_DRAW_LINES] = AddLineList;
m_primitive_table[OpcodeDecoder::GX_DRAW_LINE_STRIP] = AddLineStrip;
m_primitive_table[OpcodeDecoder::GX_DRAW_POINTS] = AddPoints;
}
void IndexGenerator::Start(u16* Indexptr)
void IndexGenerator::Start(u16* index_ptr)
{
index_buffer_current = Indexptr;
BASEIptr = Indexptr;
base_index = 0;
m_index_buffer_current = index_ptr;
m_base_index_ptr = index_ptr;
m_base_index = 0;
}
void IndexGenerator::AddIndices(int primitive, u32 numVerts)
void IndexGenerator::AddIndices(int primitive, u32 num_vertices)
{
index_buffer_current = s_primitive_table[primitive](index_buffer_current, numVerts, base_index);
base_index += numVerts;
m_index_buffer_current =
m_primitive_table[primitive](m_index_buffer_current, num_vertices, m_base_index);
m_base_index += num_vertices;
}
void IndexGenerator::AddExternalIndices(const u16* indices, u32 num_indices, u32 num_vertices)
{
std::memcpy(index_buffer_current, indices, sizeof(u16) * num_indices);
index_buffer_current += num_indices;
base_index += num_vertices;
std::memcpy(m_index_buffer_current, indices, sizeof(u16) * num_indices);
m_index_buffer_current += num_indices;
m_base_index += num_vertices;
}
u32 IndexGenerator::GetRemainingIndices()
u32 IndexGenerator::GetRemainingIndices() const
{
u32 max_index = 65534; // -1 is reserved for primitive restart (ogl + dx11)
return max_index - base_index;
// -1 is reserved for primitive restart (OGL + DX11)
constexpr u32 max_index = 65534;
return max_index - m_base_index;
}