thirdparty/ppsspp
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Optimize index generator

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This commit is contained in:
Henrik Rydgard 2013-10-01 18:02:09 +02:00
parent e4c6ba9b01
commit af46d17b94
1 changed files with 40 additions and 50 deletions
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90
GPU/Common/IndexGenerator.cpp
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@ -79,16 +79,15 @@ void IndexGenerator::AddPoints(int numVerts) {
}
void IndexGenerator::AddList(int numVerts) {
int numTris = numVerts / 3;
for (int i = 0; i < numTris; i++) {
*inds_++ = index_ + i*3;
*inds_++ = index_ + i*3 + 1;
*inds_++ = index_ + i*3 + 2;
for (int i = 0; i < numVerts; i += 3) {
*inds_++ = index_ + i;
*inds_++ = index_ + i + 1;
*inds_++ = index_ + i + 2;
}
// ignore overflow verts
index_ += numVerts;
count_ += numTris * 3;
count_ += numVerts;
prim_ = GE_PRIM_TRIANGLES;
seenPrims_ |= 1 << GE_PRIM_TRIANGLES;
}
@ -98,8 +97,8 @@ void IndexGenerator::AddStrip(int numVerts) {
int numTris = numVerts - 2;
for (int i = 0; i < numTris; i++) {
*inds_++ = index_ + i;
*inds_++ = index_ + i+(wind?2:1);
*inds_++ = index_ + i+(wind?1:2);
*inds_++ = index_ + i + (wind?2:1);
*inds_++ = index_ + i + (wind?1:2);
wind = !wind;
}
index_ += numVerts;
@ -132,13 +131,12 @@ void IndexGenerator::AddFan(int numVerts) {
//Lines
void IndexGenerator::AddLineList(int numVerts) {
int numLines = numVerts / 2;
for (int i = 0; i < numLines; i++) {
*inds_++ = index_ + i*2;
*inds_++ = index_ + i*2+1;
for (int i = 0; i < numVerts; i += 2) {
*inds_++ = index_ + i;
*inds_++ = index_ + i + 1;
}
index_ += numVerts;
count_ += numLines * 2;
count_ += numVerts;
prim_ = GE_PRIM_LINES;
seenPrims_ |= 1 << prim_;
}
@ -156,13 +154,12 @@ void IndexGenerator::AddLineStrip(int numVerts) {
}
void IndexGenerator::AddRectangles(int numVerts) {
int numRects = numVerts / 2;
for (int i = 0; i < numRects; i++) {
*inds_++ = index_ + i*2;
*inds_++ = index_ + i*2+1;
for (int i = 0; i < numVerts; i += 2) {
*inds_++ = index_ + i;
*inds_++ = index_ + i + 1;
}
index_ += numVerts;
count_ += numRects * 2;
count_ += numVerts;
prim_ = GE_PRIM_RECTANGLES;
seenPrims_ |= 1 << GE_PRIM_RECTANGLES;
}
@ -209,13 +206,12 @@ void IndexGenerator::TranslatePoints(int numInds, const u16 *_inds, int indexOff
}
void IndexGenerator::TranslateList(int numInds, const u8 *inds, int indexOffset) {
int numTris = numInds / 3;
for (int i = 0; i < numTris; i++) {
*inds_++ = index_ - indexOffset + inds[i*3];
*inds_++ = index_ - indexOffset + inds[i*3 + 1];
*inds_++ = index_ - indexOffset + inds[i*3 + 2];
for (int i = 0; i < numInds; i += 3) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i + 1];
*inds_++ = index_ - indexOffset + inds[i + 2];
}
count_ += numTris * 3;
count_ += numInds;
prim_ = GE_PRIM_TRIANGLES;
seenPrims_ |= (1 << GE_PRIM_TRIANGLES) | SEEN_INDEX8;
}
@ -249,13 +245,12 @@ void IndexGenerator::TranslateFan(int numInds, const u8 *inds, int indexOffset)
void IndexGenerator::TranslateList(int numInds, const u16 *_inds, int indexOffset) {
const u16_le *inds = (u16_le*)_inds;
int numTris = numInds / 3;
for (int i = 0; i < numTris; i++) {
*inds_++ = index_ - indexOffset + inds[i*3];
*inds_++ = index_ - indexOffset + inds[i*3 + 1];
*inds_++ = index_ - indexOffset + inds[i*3 + 2];
for (int i = 0; i < numInds; i += 3) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i + 1];
*inds_++ = index_ - indexOffset + inds[i + 2];
}
count_ += numTris * 3;
count_ += numInds;
prim_ = GE_PRIM_TRIANGLES;
seenPrims_ |= (1 << GE_PRIM_TRIANGLES) | SEEN_INDEX16;
}
@ -290,12 +285,10 @@ void IndexGenerator::TranslateFan(int numInds, const u16 *_inds, int indexOffset
}
void IndexGenerator::TranslateLineList(int numInds, const u8 *inds, int indexOffset) {
int numLines = numInds / 2;
for (int i = 0; i < numLines; i++) {
*inds_++ = index_ - indexOffset + inds[i*2];
*inds_++ = index_ - indexOffset + inds[i*2+1];
for (int i = 0; i < numInds; i += 2) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i+1];
}
count_ += numLines * 2;
prim_ = GE_PRIM_LINES;
seenPrims_ |= (1 << GE_PRIM_LINES) | SEEN_INDEX8;
}
@ -313,12 +306,11 @@ void IndexGenerator::TranslateLineStrip(int numInds, const u8 *inds, int indexOf
void IndexGenerator::TranslateLineList(int numInds, const u16 *_inds, int indexOffset) {
const u16_le *inds = (u16_le*)_inds;
int numLines = numInds / 2;
for (int i = 0; i < numLines; i++) {
*inds_++ = index_ - indexOffset + inds[i*2];
*inds_++ = index_ - indexOffset + inds[i*2+1];
for (int i = 0; i < numInds; i += 2) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i+1];
}
count_ += numLines * 2;
count_ += numInds;
prim_ = GE_PRIM_LINES;
seenPrims_ |= (1 << GE_PRIM_LINES) | SEEN_INDEX16;
}
@ -336,24 +328,22 @@ void IndexGenerator::TranslateLineStrip(int numInds, const u16 *_inds, int index
}
void IndexGenerator::TranslateRectangles(int numInds, const u8 *inds, int indexOffset) {
int numRects = numInds / 2;
for (int i = 0; i < numRects; i++) {
*inds_++ = index_ - indexOffset + inds[i*2];
*inds_++ = index_ - indexOffset + inds[i*2+1];
for (int i = 0; i < numInds; i += 2) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i+1];
}
count_ += numRects * 2;
count_ += numInds;
prim_ = GE_PRIM_RECTANGLES;
seenPrims_ |= (1 << GE_PRIM_RECTANGLES) | SEEN_INDEX8;
}
void IndexGenerator::TranslateRectangles(int numInds, const u16 *_inds, int indexOffset) {
const u16_le *inds = (u16_le*)_inds;
int numRects = numInds / 2;
for (int i = 0; i < numRects; i++) {
*inds_++ = index_ - indexOffset + inds[i*2];
*inds_++ = index_ - indexOffset + inds[i*2+1];
for (int i = 0; i < numInds; i += 2) {
*inds_++ = index_ - indexOffset + inds[i];
*inds_++ = index_ - indexOffset + inds[i+1];
}
count_ += numRects * 2;
count_ += numInds * 2;
prim_ = GE_PRIM_RECTANGLES;
seenPrims_ |= (1 << GE_PRIM_RECTANGLES) | SEEN_INDEX16;
}