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Rework Blocklinear Texture Deswizzling

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Blocklinear texture decoding was broken for padding blocks and would incorrectly decode them resulting in major texture corruption for any textures with their widths not aligned to 64 bytes. This has now been fixed with neater code which avoids redundant repetition of any code using lambdas and functions where necessary.
This commit is contained in:
PixelyIon 2022-01-22 05:29:23 +05:30
parent 043be4d8f7
commit 35fde2cd0b
1 changed files with 80 additions and 73 deletions
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153
app/src/main/cpp/skyline/gpu/texture/layout.h
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@ -15,94 +15,101 @@ namespace skyline::gpu::texture {
size_t GetBlockLinearLayerSize(const GuestTexture &guest) {
u32 blockHeight{guest.tileConfig.blockHeight}; //!< The height of the blocks in GOBs
u32 robHeight{GobHeight * blockHeight}; //!< The height of a single ROB (Row of Blocks) in lines
u32 surfaceHeight{guest.dimensions.height / guest.format->blockHeight}; //!< The height of the surface in lines
u32 surfaceHeightRobs{util::AlignUp(surfaceHeight, robHeight) / robHeight}; //!< The height of the surface in ROBs (Row Of Blocks)
u32 surfaceHeightLines{guest.dimensions.height / guest.format->blockHeight}; //!< The height of the surface in lines
u32 surfaceHeightRobs{util::AlignUp(surfaceHeightLines, robHeight) / robHeight}; //!< The height of the surface in ROBs (Row Of Blocks, incl. padding ROB)
u32 robWidthBytes{util::AlignUp((guest.dimensions.width / guest.format->blockWidth) * guest.format->bpb, GobWidth)}; //!< The width of a ROB in bytes
u32 robWidthBlocks{robWidthBytes / GobWidth}; //!< The width of a ROB in blocks (and GOBs because block width == 1 on the Tegra X1)
u32 robBytes{robWidthBytes * robHeight}; //!< The size of a ROB in bytes
u32 robWidthBlocks{robWidthBytes / GobWidth}; //!< The width of a ROB in blocks (and GOBs because block width == 1 on the Tegra X1, incl. padding block)
return robBytes * surfaceHeightRobs;
return robWidthBytes * robHeight * surfaceHeightRobs;
}
/**
* @brief Copies pixel data between a linear and blocklinear texture
*/
template <typename CopyFunction>
void CopyBlockLinearInternal(const GuestTexture &guest, u8 *blockLinear, u8 *linear, CopyFunction copyFunction) {
u32 blockHeight{guest.tileConfig.blockHeight};
u32 robHeight{GobHeight * blockHeight};
u32 surfaceHeightLines{guest.dimensions.height / guest.format->blockHeight};
u32 surfaceHeightRobs{surfaceHeightLines / robHeight}; //!< The height of the surface in ROBs excluding padding ROBs
u32 formatBpb{guest.format->bpb};
u32 robWidthUnalignedBytes{(guest.dimensions.width / guest.format->blockWidth) * formatBpb};
u32 robWidthBytes{util::AlignUp(robWidthUnalignedBytes, GobWidth)};
u32 robWidthBlocks{robWidthUnalignedBytes / GobWidth};
bool hasPaddingBlock{robWidthUnalignedBytes != robWidthBytes};
u32 blockPaddingOffset{hasPaddingBlock ? (GobWidth - (robWidthBytes - robWidthUnalignedBytes)) : 0};
u32 robBytes{robWidthUnalignedBytes * robHeight};
u32 gobYOffset{robWidthUnalignedBytes * GobHeight};
u8 *sector{blockLinear};
auto deswizzleRob{[&](u8 *linearRob, u32 paddingY) {
auto deswizzleBlock{[&](u8 *linearBlock, auto copySector) __attribute__((always_inline)) {
for (u32 gobY{}; gobY < blockHeight; gobY++) { // Every Block contains `blockHeight` Y-axis GOBs
#pragma clang loop unroll_count(32)
for (u32 index{}; index < SectorWidth * SectorHeight; index++) { // Every Y-axis GOB contains `sectorWidth * sectorHeight` sectors
u32 xT{((index << 3) & 0b10000) | ((index << 1) & 0b100000)}; // Morton-Swizzle on the X-axis
u32 yT{((index >> 1) & 0b110) | (index & 0b1)}; // Morton-Swizzle on the Y-axis
copySector(linearBlock + (yT * robWidthUnalignedBytes) + xT, xT);
}
linearBlock += gobYOffset; // Increment the linear GOB to the next Y-axis GOB
}
}};
for (u32 block{}; block < robWidthBlocks; block++) { // Every ROB contains `surfaceWidthBlocks` blocks (excl. padding block)
deswizzleBlock(linearRob, [&](u8 *linearSector, u32 xT) __attribute__((always_inline)) {
copyFunction(linearSector, sector, SectorWidth);
sector += SectorWidth; // `sectorWidth` bytes are of sequential image data
});
sector += paddingY; // Skip over any padding at the end of this block
linearRob += GobWidth; // Increment the linear block to the next block (As Block Width = 1 GOB Width)
}
if (hasPaddingBlock)
deswizzleBlock(linearRob, [&](u8 *linearSector, u32 xT) __attribute__((always_inline)) {
#pragma clang loop unroll_count(4)
for (u32 pixelOffset{}; pixelOffset < SectorWidth; pixelOffset += formatBpb) {
if (xT < blockPaddingOffset)
copyFunction(linearSector + pixelOffset, sector, formatBpb);
sector += formatBpb;
xT += formatBpb;
}
});
}};
u8 *linearRob{linear};
for (u32 rob{}; rob < surfaceHeightRobs; rob++) { // Every Surface contains `surfaceHeightRobs` ROBs (excl. padding ROB)
deswizzleRob(linearRob, 0);
linearRob += robBytes; // Increment the linear block to the next ROB
}
if (surfaceHeightLines % robHeight != 0) {
blockHeight = (util::AlignUp(surfaceHeightLines, GobHeight) - (surfaceHeightRobs * robHeight)) / GobHeight; // Calculate the amount of Y GOBs which aren't padding
deswizzleRob(linearRob, (guest.tileConfig.blockHeight - blockHeight) * (SectorWidth * SectorWidth * SectorHeight));
}
}
/**
* @brief Copies the contents of a blocklinear guest texture to a linear output buffer
*/
void CopyBlockLinearToLinear(const GuestTexture &guest, u8 *guestInput, u8 *linearOutput) {
u32 blockHeight{guest.tileConfig.blockHeight};
u32 robHeight{GobHeight * blockHeight};
u32 surfaceHeight{guest.dimensions.height / guest.format->blockHeight};
u32 surfaceHeightRobs{util::AlignUp(surfaceHeight, robHeight) / robHeight};
u32 robWidthBytes{util::AlignUp((guest.dimensions.width / guest.format->blockWidth) * guest.format->bpb, GobWidth)};
u32 robWidthBlocks{robWidthBytes / GobWidth};
u32 robBytes{robWidthBytes * robHeight};
u32 gobYOffset{robWidthBytes * GobHeight};
auto inputSector{guestInput};
auto outputRob{linearOutput};
for (u32 rob{}, y{}, paddingY{}; rob < surfaceHeightRobs; rob++) { // Every Surface contains `surfaceHeightRobs` ROBs
auto outputBlock{outputRob}; // We iterate through a block independently of the ROB
for (u32 block{}; block < robWidthBlocks; block++) { // Every ROB contains `surfaceWidthBlocks` Blocks
auto outputGob{outputBlock}; // We iterate through a GOB independently of the block
for (u32 gobY{}; gobY < blockHeight; gobY++) { // Every Block contains `blockHeight` Y-axis GOBs
for (u32 index{}; index < SectorWidth * SectorHeight; index++) { // Every Y-axis GOB contains `sectorWidth * sectorHeight` sectors
u32 xT{((index << 3) & 0b10000) | ((index << 1) & 0b100000)}; // Morton-Swizzle on the X-axis
u32 yT{((index >> 1) & 0b110) | (index & 0b1)}; // Morton-Swizzle on the Y-axis
std::memcpy(outputGob + (yT * robWidthBytes) + xT, inputSector, SectorWidth);
inputSector += SectorWidth; // `sectorWidth` bytes are of sequential image data
}
outputGob += gobYOffset; // Increment the output GOB to the next Y-axis GOB
}
inputSector += paddingY; // Increment the input sector to the next sector
outputBlock += GobWidth; // Increment the output block to the next block (As Block Width = 1 GOB Width)
}
outputRob += robBytes; // Increment the output block to the next ROB
y += robHeight; // Increment the Y position to the next ROB
blockHeight = static_cast<u8>(std::min(static_cast<u32>(blockHeight), (surfaceHeight - y) / GobHeight)); // Calculate the amount of Y GOBs which aren't padding
paddingY = (guest.tileConfig.blockHeight - blockHeight) * (SectorWidth * SectorWidth * SectorHeight); // Calculate the amount of padding between contiguous sectors
}
CopyBlockLinearInternal(guest, guestInput, linearOutput, std::memcpy);
}
/**
* @brief Copies the contents of a blocklinear guest texture to a linear output buffer
*/
void CopyLinearToBlockLinear(const GuestTexture &guest, u8 *linearInput, u8 *guestOutput) {
u32 blockHeight{guest.tileConfig.blockHeight};
u32 robHeight{GobHeight * blockHeight};
u32 surfaceHeight{guest.dimensions.height / guest.format->blockHeight};
u32 surfaceHeightRobs{util::AlignUp(surfaceHeight, robHeight) / robHeight};
u32 robWidthBytes{util::AlignUp((guest.dimensions.width / guest.format->blockWidth) * guest.format->bpb, GobWidth)};
u32 robWidthBlocks{robWidthBytes / GobWidth};
u32 robBytes{robWidthBytes * robHeight};
u32 gobYOffset{robWidthBytes * GobHeight};
auto outputSector{guestOutput};
auto inputRob{linearInput};
for (u32 rob{}, y{}, paddingY{}; rob < surfaceHeightRobs; rob++) {
auto outputBlock{inputRob};
for (u32 block{}; block < robWidthBlocks; block++) {
auto inputGob{outputBlock};
for (u32 gobY{}; gobY < blockHeight; gobY++) {
for (u32 index{}; index < SectorWidth * SectorHeight; index++) {
u32 xT{((index << 3) & 0b10000) | ((index << 1) & 0b100000)};
u32 yT{((index >> 1) & 0b110) | (index & 0b1)};
std::memcpy(outputSector, inputGob + (yT * robWidthBytes) + xT, SectorWidth);
outputSector += SectorWidth;
}
inputGob += gobYOffset;
}
outputSector += paddingY;
outputBlock += GobWidth;
}
inputRob += robBytes;
y += robHeight;
blockHeight = static_cast<u8>(std::min(static_cast<u32>(blockHeight), (surfaceHeight - y) / GobHeight));
paddingY = (guest.tileConfig.blockHeight - blockHeight) * (SectorWidth * SectorWidth * SectorHeight);
}
CopyBlockLinearInternal(guest, guestOutput, linearInput, [](u8* src, u8* dst, size_t size) {
std::memcpy(dst, src, size);
});
}
/**