GitHub/skyline
2
0
Fork 0
mirror of https://github.com/skyline-emu/skyline.git synced 2024-10-17 02:26:50 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix quads index buffer conversion not accounting for first index

Browse Source 
Unindexed quad draws were broken when multiple draw calls were done on the same vertex buffer, with a non-zero `first` index.
Indexed quad draws also suffered from the same issue, but was never encountered in games.
This commit fixes both cases by accounting for the `first` drawn index when generating conversion index buffers.
This commit is contained in:
lynxnb 2022-09-04 11:16:35 +02:00
parent e316bf5877
commit 34bd16426c
2 changed files with 33 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
app/src/main/cpp/skyline/gpu/interconnect/conversion/quads.h
View File

@ -21,21 +21,10 @@ namespace skyline::gpu::interconnect::conversion::quads {
/**
* @return The minimum size (in bytes) required to store the quad index buffer of the given type after conversion
* @param type The type of an element in the index buffer
* @param indexSize The size of an element in the index buffer in bytes
*/
constexpr size_t GetRequiredBufferSize(u32 count, vk::IndexType type) {
return GetIndexCount(count) * [&]() -> size_t {
switch (type) {
case vk::IndexType::eUint32:
return sizeof(u32);
case vk::IndexType::eUint16:
return sizeof(u16);
case vk::IndexType::eUint8EXT:
return sizeof(u8);
default:
return 0;
}
}();
constexpr size_t GetRequiredBufferSize(u32 count, size_t indexSize) {
return GetIndexCount(count) * indexSize;
}
/**

47
app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
View File

@ -1722,19 +1722,25 @@ namespace skyline::gpu::interconnect {
/**
* @brief Retrieves an index buffer for converting a non-indexed quad list to a triangle list
* @result A tuple containing a view over the index buffer, the index type and the index count
* @return A tuple containing a view over the index buffer, the index type and the index count
*/
std::tuple<BufferView, vk::IndexType, u32> GetNonIndexedQuadConversionBuffer(u32 count) {
vk::DeviceSize size{conversion::quads::GetRequiredBufferSize(count, vk::IndexType::eUint32)};
std::tuple<BufferView, vk::IndexType, u32> GetNonIndexedQuadConversionBuffer(u32 count, u32 first) {
size_t firstPos{conversion::quads::GetRequiredBufferSize(first, sizeof(u32))};
vk::DeviceSize size{conversion::quads::GetRequiredBufferSize(count, sizeof(u32)) + firstPos};
if (!quadListConversionBuffer || quadListConversionBuffer->GetBackingSpan().size_bytes() < size) {
quadListConversionBuffer = std::make_shared<Buffer>(gpu, size);
conversion::quads::GenerateQuadListConversionBuffer(quadListConversionBuffer->GetBackingSpan().cast<u32>().data(), count);
conversion::quads::GenerateQuadListConversionBuffer(quadListConversionBuffer->GetBackingSpan().cast<u32>().data(), first + count);
}
return {quadListConversionBuffer->GetView(0, size), vk::IndexType::eUint32, conversion::quads::GetIndexCount(count)};
return {quadListConversionBuffer->GetView(firstPos, size), vk::IndexType::eUint32, conversion::quads::GetIndexCount(count)};
}
MegaBufferAllocator::Allocation GetIndexedQuadConversionBuffer(u32 count) {
vk::DeviceSize size{conversion::quads::GetRequiredBufferSize(count, indexBuffer.type)};
/**
* @brief Generates an index buffer for converting an indexed quad list to a triangle list
* @return The megabuffer allocation containing the generated index buffer
*/
MegaBufferAllocator::Allocation GetIndexedQuadConversionBuffer(u32 count, u32 first) {
vk::DeviceSize size{conversion::quads::GetRequiredBufferSize(count, indexBuffer.GetIndexSize())};
auto allocation{executor.AcquireMegaBufferAllocator().Allocate(executor.cycle, size)};
ContextLock lock{executor.tag, indexBuffer.view};
@ -1742,7 +1748,8 @@ namespace skyline::gpu::interconnect {
// TODO: see Read()
Logger::Error("Dirty index buffer reads for attached buffers are unimplemented");
})};
conversion::quads::GenerateIndexedQuadConversionBuffer(allocation.region.data(), guestIndexBuffer.data(), count, indexBuffer.type);
u8 *guestBufferStart{guestIndexBuffer.data() + first * indexBuffer.GetIndexSize()};
conversion::quads::GenerateIndexedQuadConversionBuffer(allocation.region.data(), guestBufferStart, count, indexBuffer.type);
return allocation;
}
@ -2085,19 +2092,22 @@ namespace skyline::gpu::interconnect {
vk::DeviceSize viewSize{}; //!< The size of the cached view
BufferView view{}; //!< A cached view tied to the IOVAs and size to allow for a faster lookup
vk::DeviceSize GetIndexBufferSize(u32 elementCount) {
constexpr size_t GetIndexSize() const {
switch (type) {
case vk::IndexType::eUint8EXT:
return sizeof(u8) * elementCount;
case vk::IndexType::eUint16:
return sizeof(u16) * elementCount;
case vk::IndexType::eUint32:
return sizeof(u32) * elementCount;
return sizeof(u32);
case vk::IndexType::eUint16:
return sizeof(u16);
case vk::IndexType::eUint8EXT:
return sizeof(u8);
default:
throw exception("Unsupported Vulkan Index Type: {}", vk::to_string(type));
}
}
vk::DeviceSize GetIndexBufferSize(u32 elementCount) {
return GetIndexSize() * elementCount;
}
} indexBuffer{};
/* Textures */
@ -3025,10 +3035,12 @@ namespace skyline::gpu::interconnect {
boundIndexBuffer->type = indexBuffer.type;
if (needsQuadConversion) {
auto allocation{GetIndexedQuadConversionBuffer(count)};
Logger::Warn("Drawing indexed quads");
auto allocation{GetIndexedQuadConversionBuffer(count, first)};
boundIndexBuffer->handle = allocation.buffer;
boundIndexBuffer->offset = allocation.offset;
count = conversion::quads::GetIndexCount(count);
first = 0;
} else {
executor.AttachBuffer(indexBufferView);
@ -3046,10 +3058,11 @@ namespace skyline::gpu::interconnect {
}
} else if (needsQuadConversion) {
// Convert the guest-supplied quad list to an indexed triangle list
auto[bufferView, indexType, indexCount]{GetNonIndexedQuadConversionBuffer(count)};
auto[bufferView, indexType, indexCount]{GetNonIndexedQuadConversionBuffer(count, first)};
executor.AttachBuffer(bufferView);
count = indexCount;
first = 0;
boundIndexBuffer = std::make_shared<BoundIndexBuffer>();
boundIndexBuffer->type = indexType;
boundIndexBuffer->handle = bufferView->buffer->GetBacking();