libretro/ppsspp
1
0
Fork 0
mirror of https://github.com/libretro/ppsspp.git synced 2025-01-22 08:44:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Optimize common cases for unswizzled indexed tex.

Browse Source
This commit is contained in:
Unknown W. Brackets 2013-04-13 20:01:52 -07:00
parent 8d55445b28
commit 4e4861a104
1 changed files with 39 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
GPU/GLES/TextureCache.cpp
View File

@ -238,10 +238,9 @@ void *TextureCache::UnswizzleFromMem(u32 texaddr, u32 bytesPerPixel, u32 level)
}
template <typename IndexT, typename ClutT>
inline void DeIndexTextureNoSwizzle(ClutT *dest, const u32 texaddr, int length, const ClutT *clut) {
inline void DeIndexTexture(ClutT *dest, const IndexT *indexed, int length, const ClutT *clut) {
// Usually, there is no special offset, mask, or shift.
const bool nakedIndex = (gstate.clutformat & ~3) == 0xC500FF00;
const IndexT *indexed = (const IndexT *) Memory::GetPointer(texaddr);
if (nakedIndex) {
for (int i = 0; i < length; ++i) {
@ -254,6 +253,12 @@ inline void DeIndexTextureNoSwizzle(ClutT *dest, const u32 texaddr, int length,
}
}
template <typename IndexT, typename ClutT>
inline void DeIndexTextureNoSwizzle(ClutT *dest, const u32 texaddr, int length, const ClutT *clut) {
const IndexT *indexed = (const IndexT *) Memory::GetPointer(texaddr);
DeIndexTexture(dest, indexed, length, clut);
}
void *TextureCache::readIndexedTex(int level, u32 texaddr, int bytesPerIndex) {
int length = (gstate.texbufwidth[level] & 0x3FF) * (1 << ((gstate.texsize[level] >> 8) & 0xf));
void *buf = NULL;
@ -284,28 +289,15 @@ void *TextureCache::readIndexedTex(int level, u32 texaddr, int bytesPerIndex) {
UnswizzleFromMem(texaddr, bytesPerIndex, level);
switch (bytesPerIndex) {
case 1:
for (int i = 0, j = 0; i < length; i += 4, j++) {
u32 n = tmpTexBuf32[j];
for (u32 k = 0; k < 4; k++) {
u8 index = (n >> (k * 8)) & 0xff;
tmpTexBuf16[i + k] = clut[GetClutIndex(index)];
}
}
DeIndexTexture(tmpTexBuf16.data(), (u8 *) tmpTexBuf32.data(), length, clut);
break;
case 2:
for (int i = 0, j = 0; i < length; i += 2, j++) {
u32 n = tmpTexBuf32[j];
tmpTexBuf16[i + 0] = clut[GetClutIndex(n & 0xffff)];
tmpTexBuf16[i + 1] = clut[GetClutIndex(n >> 16)];
}
DeIndexTexture(tmpTexBuf16.data(), (u16 *) tmpTexBuf32.data(), length, clut);
break;
case 4:
for (int i = 0; i < length; i++) {
u32 n = tmpTexBuf32[i];
tmpTexBuf16[i] = clut[GetClutIndex(n)];
}
DeIndexTexture(tmpTexBuf16.data(), (u32 *) tmpTexBuf32.data(), length, clut);
break;
}
}
@ -337,29 +329,44 @@ void *TextureCache::readIndexedTex(int level, u32 texaddr, int bytesPerIndex) {
UnswizzleFromMem(texaddr, bytesPerIndex, level);
switch (bytesPerIndex) {
case 1:
for (int i = length - 4, j = (length / 4) - 1; i >= 0; i -= 4, j--) {
u32 n = tmpTexBuf32[j];
u32 k;
for (k = 0; k < 4; k++) {
u32 index = (n >> (k * 8)) & 0xff;
tmpTexBuf32[i + k] = clut[GetClutIndex(index)];
// If possible, let's do this in 1024 byte blocks.
if ((length & 0x3ff) == 0) {
u8 block[1024];
for (int i = length - 1024, j = (length / 4) - 256; i >= 0; i -= 1024, j -= 256) {
memcpy(block, &tmpTexBuf32[j], 1024 * sizeof(u8));
DeIndexTexture(&tmpTexBuf32[i], block, 1024, clut);
}
} else {
for (int i = length - 4, j = (length / 4) - 1; i >= 0; i -= 4, j--) {
u32 n = tmpTexBuf32[j];
u32 k;
for (k = 0; k < 4; k++) {
u32 index = (n >> (k * 8)) & 0xff;
tmpTexBuf32[i + k] = clut[GetClutIndex(index)];
}
}
}
break;
case 2:
for (int i = length - 2, j = (length / 2) - 1; i >= 0; i -= 2, j--) {
u32 n = tmpTexBuf32[j];
tmpTexBuf32[i + 0] = clut[GetClutIndex(n & 0xffff)];
tmpTexBuf32[i + 1] = clut[GetClutIndex(n >> 16)];
// If possible, let's do this in 1024 byte blocks.
if ((length & 0x3ff) == 0) {
u16 block[512];
for (int i = length - 1024, j = (length / 4) - 256; i >= 0; i -= 1024, j -= 256) {
memcpy(block, &tmpTexBuf32[j], 512 * sizeof(u16));
DeIndexTexture(&tmpTexBuf32[i], block, 512, clut);
}
} else {
for (int i = length - 2, j = (length / 2) - 1; i >= 0; i -= 2, j--) {
u32 n = tmpTexBuf32[j];
tmpTexBuf32[i + 0] = clut[GetClutIndex(n & 0xffff)];
tmpTexBuf32[i + 1] = clut[GetClutIndex(n >> 16)];
}
}
break;
case 4:
for (int i = 0; i < length; i++) {
u32 n = tmpTexBuf32[i];
tmpTexBuf32[i] = clut[GetClutIndex(n)];
}
DeIndexTexture(tmpTexBuf32.data(), tmpTexBuf32.data(), length, clut);
break;
}
}