mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-23 05:19:56 +00:00
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, version 2.0 or later versions.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official git repository and contact information can be found at
|
|
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "Common/CommonTypes.h"
|
|
#include "Common/Swap.h"
|
|
#include "GPU/ge_constants.h"
|
|
|
|
class IndexGenerator {
|
|
public:
|
|
void Setup(u16 *indexptr) {
|
|
indsBase_ = indexptr;
|
|
inds_ = indexptr;
|
|
}
|
|
void Reset() {
|
|
inds_ = indsBase_;
|
|
}
|
|
|
|
static bool PrimCompatible(int prim1, int prim2) {
|
|
if (prim1 == GE_PRIM_INVALID || prim2 == GE_PRIM_KEEP_PREVIOUS)
|
|
return true;
|
|
return indexedPrimitiveType[prim1] == indexedPrimitiveType[prim2];
|
|
}
|
|
|
|
static GEPrimitiveType GeneralPrim(GEPrimitiveType prim) {
|
|
switch (prim) {
|
|
case GE_PRIM_LINE_STRIP: return GE_PRIM_LINES; break;
|
|
case GE_PRIM_TRIANGLE_STRIP:
|
|
case GE_PRIM_TRIANGLE_FAN: return GE_PRIM_TRIANGLES; break;
|
|
default:
|
|
return prim;
|
|
}
|
|
}
|
|
|
|
void AddPrim(int prim, int vertexCount, int indexOffset, bool clockwise);
|
|
void TranslatePrim(int prim, int numInds, const u8 *inds, int indexOffset, bool clockwise);
|
|
void TranslatePrim(int prim, int numInds, const u16_le *inds, int indexOffset, bool clockwise);
|
|
void TranslatePrim(int prim, int numInds, const u32_le *inds, int indexOffset, bool clockwise);
|
|
|
|
// This is really the number of generated indices, or 3x the number of triangles.
|
|
int VertexCount() const { return inds_ - indsBase_; }
|
|
|
|
private:
|
|
// Points (why index these? code simplicity)
|
|
void AddPoints(int numVerts, int indexOffset);
|
|
// Triangles
|
|
void AddList(int numVerts, int indexOffset, bool clockwise);
|
|
void AddStrip(int numVerts, int indexOffset, bool clockwise);
|
|
void AddFan(int numVerts, int indexOffset, bool clockwise);
|
|
// Lines
|
|
void AddLineList(int numVerts, int indexOffset);
|
|
void AddLineStrip(int numVerts, int indexOffset);
|
|
// Rectangles
|
|
void AddRectangles(int numVerts, int indexOffset);
|
|
|
|
// These translate already indexed lists
|
|
template <class ITypeLE>
|
|
void TranslatePoints(int numVerts, const ITypeLE *inds, int indexOffset);
|
|
template <class ITypeLE>
|
|
void TranslateList(int numVerts, const ITypeLE *inds, int indexOffset, bool clockwise);
|
|
template <class ITypeLE>
|
|
inline void TranslateLineList(int numVerts, const ITypeLE *inds, int indexOffset);
|
|
template <class ITypeLE>
|
|
inline void TranslateLineStrip(int numVerts, const ITypeLE *inds, int indexOffset);
|
|
|
|
template <class ITypeLE>
|
|
void TranslateStrip(int numVerts, const ITypeLE *inds, int indexOffset, bool clockwise);
|
|
template <class ITypeLE>
|
|
void TranslateFan(int numVerts, const ITypeLE *inds, int indexOffset, bool clockwise);
|
|
|
|
template <class ITypeLE>
|
|
inline void TranslateRectangles(int numVerts, const ITypeLE *inds, int indexOffset);
|
|
|
|
u16 *indsBase_;
|
|
u16 *inds_;
|
|
|
|
static const u8 indexedPrimitiveType[7];
|
|
};
|
|
|