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VideoCommon: merge triangle+list+point index buffers

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We are used to render them out of order as long as everything else matches, but rendering order does matter, so we have to flush on primitive switch. This commit implements this flush.
Also as we flush on primitive switch, we don't have to create three different index buffers. All indices are now stored in one buffer.

This will slow down games which switch often primitive types (eg ztp), but it should be more accurate.
This commit is contained in:
degasus
2014-01-15 21:44:46 +01:00
parent 770485ad04
commit 6b01839525
7 changed files with 133 additions and 175 deletions
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58
Source/Core/VideoCommon/VertexManagerBase.cpp
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@ -21,15 +21,26 @@ u8 *VertexManager::s_pCurBufferPointer;
u8 *VertexManager::s_pBaseBufferPointer;
u8 *VertexManager::s_pEndBufferPointer;
PrimitiveType VertexManager::current_primitive_type;
static const PrimitiveType primitive_from_gx[8] = {
PRIMITIVE_TRIANGLES, // GX_DRAW_QUADS
PRIMITIVE_TRIANGLES, // GX_DRAW_NONE
PRIMITIVE_TRIANGLES, // GX_DRAW_TRIANGLES
PRIMITIVE_TRIANGLES, // GX_DRAW_TRIANGLE_STRIP
PRIMITIVE_TRIANGLES, // GX_DRAW_TRIANGLE_FAN
PRIMITIVE_LINES, // GX_DRAW_LINES
PRIMITIVE_LINES, // GX_DRAW_LINE_STRIP
PRIMITIVE_POINTS, // GX_DRAW_POINTS
};
VertexManager::VertexManager()
{
LocalVBuffer.resize(MAXVBUFFERSIZE);
s_pCurBufferPointer = s_pBaseBufferPointer = &LocalVBuffer[0];
s_pEndBufferPointer = s_pBaseBufferPointer + LocalVBuffer.size();
TIBuffer.resize(MAXIBUFFERSIZE);
LIBuffer.resize(MAXIBUFFERSIZE);
PIBuffer.resize(MAXIBUFFERSIZE);
LocalIBuffer.resize(MAXIBUFFERSIZE);
ResetBuffer();
}
@ -41,7 +52,7 @@ VertexManager::~VertexManager()
void VertexManager::ResetBuffer()
{
s_pCurBufferPointer = s_pBaseBufferPointer;
IndexGenerator::Start(GetTriangleIndexBuffer(), GetLineIndexBuffer(), GetPointIndexBuffer());
IndexGenerator::Start(GetIndexBuffer());
}
u32 VertexManager::GetRemainingSize()
@ -53,6 +64,12 @@ void VertexManager::PrepareForAdditionalData(int primitive, u32 count, u32 strid
{
u32 const needed_vertex_bytes = count * stride;
// We can't merge different kinds of primitives, so we have to flush here
if (current_primitive_type != primitive_from_gx[primitive])
Flush();
current_primitive_type = primitive_from_gx[primitive];
// Check for size in buffer, if the buffer gets full, call Flush()
if (count > IndexGenerator::GetRemainingIndices() || count > GetRemainingIndices(primitive) || needed_vertex_bytes > GetRemainingSize())
{
Flush();
@ -75,27 +92,28 @@ bool VertexManager::IsFlushed() const
u32 VertexManager::GetRemainingIndices(int primitive)
{
u32 index_len = MAXIBUFFERSIZE - IndexGenerator::GetIndexLen();
if(g_Config.backend_info.bSupportsPrimitiveRestart)
{
switch (primitive)
{
case GX_DRAW_QUADS:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 5 * 4;
return index_len / 5 * 4;
case GX_DRAW_TRIANGLES:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 4 * 3;
return index_len / 4 * 3;
case GX_DRAW_TRIANGLE_STRIP:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 1 - 1;
return index_len / 1 - 1;
case GX_DRAW_TRIANGLE_FAN:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 6 * 4 + 1;
return index_len / 6 * 4 + 1;
case GX_DRAW_LINES:
return (MAXIBUFFERSIZE - IndexGenerator::GetLineindexLen());
return index_len;
case GX_DRAW_LINE_STRIP:
return (MAXIBUFFERSIZE - IndexGenerator::GetLineindexLen()) / 2 + 1;
return index_len / 2 + 1;
case GX_DRAW_POINTS:
return (MAXIBUFFERSIZE - IndexGenerator::GetPointindexLen());
return index_len;
default:
return 0;
@ -106,21 +124,21 @@ u32 VertexManager::GetRemainingIndices(int primitive)
switch (primitive)
{
case GX_DRAW_QUADS:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 6 * 4;
return index_len / 6 * 4;
case GX_DRAW_TRIANGLES:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen());
return index_len;
case GX_DRAW_TRIANGLE_STRIP:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 3 + 2;
return index_len / 3 + 2;
case GX_DRAW_TRIANGLE_FAN:
return (MAXIBUFFERSIZE - IndexGenerator::GetTriangleindexLen()) / 3 + 2;
return index_len / 3 + 2;
case GX_DRAW_LINES:
return (MAXIBUFFERSIZE - IndexGenerator::GetLineindexLen());
return index_len;
case GX_DRAW_LINE_STRIP:
return (MAXIBUFFERSIZE - IndexGenerator::GetLineindexLen()) / 2 + 1;
return index_len / 2 + 1;
case GX_DRAW_POINTS:
return (MAXIBUFFERSIZE - IndexGenerator::GetPointindexLen());
return index_len;
default:
return 0;
@ -167,9 +185,7 @@ void VertexManager::DoStateShared(PointerWrap& p)
// and maybe other things are overlooked
p.Do(LocalVBuffer);
p.Do(TIBuffer);
p.Do(LIBuffer);
p.Do(PIBuffer);
p.Do(LocalIBuffer);
s_pBaseBufferPointer = &LocalVBuffer[0];
s_pEndBufferPointer = s_pBaseBufferPointer + LocalVBuffer.size();