ShuriZma
/
xenia-canary
mirror of https://github.com/xenia-canary/xenia-canary.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[GPU] Disable primitive reset for non-list types in primitive processor

This commit is contained in:
Triang3l 2021-06-09 20:22:24 +03:00
parent 70a3919f9f
commit d00dd5a2bc
3 changed files with 30 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/xenia/gpu/d3d12/pipeline_cache.cc
View File

@ -1340,7 +1340,6 @@ bool PipelineCache::GetCurrentStateDescription(
break;
case xenos::PrimitiveType::kLineList:
case xenos::PrimitiveType::kLineStrip:
case xenos::PrimitiveType::kLineLoop:
// Quads are emulated as line lists with adjacency.
case xenos::PrimitiveType::kQuadList:
case xenos::PrimitiveType::k2DLineStrip:

38
src/xenia/gpu/primitive_processor.cc
View File

@ -458,16 +458,34 @@ bool PrimitiveProcessor::Process(ProcessingResult& result_out) {
}
} else {
if (regs.Get<reg::PA_SU_SC_MODE_CNTL>().multi_prim_ib_ena) {
guest_primitive_reset_index_guest_endian = xenos::GpuSwap(
regs.Get<reg::VGT_MULTI_PRIM_IB_RESET_INDX>().reset_indx,
guest_index_endian);
// - VGT, what does the guest say about its primitive reset index?
// - It's over 0xFFFF!!!
// - What!? 0xFFFF!? There's no way that can be stored in 16 bits!
guest_primitive_reset_enabled =
guest_index_format == xenos::IndexFormat::kInt16
? guest_primitive_reset_index_guest_endian <= UINT16_MAX
: true;
switch (guest_primitive_type) {
case xenos::PrimitiveType::kLineStrip:
case xenos::PrimitiveType::kTriangleFan:
case xenos::PrimitiveType::kTriangleStrip:
case xenos::PrimitiveType::kLineLoop:
case xenos::PrimitiveType::kQuadStrip:
case xenos::PrimitiveType::kPolygon:
case xenos::PrimitiveType::k2DLineStrip:
case xenos::PrimitiveType::k2DTriStrip:
guest_primitive_reset_index_guest_endian = xenos::GpuSwap(
regs.Get<reg::VGT_MULTI_PRIM_IB_RESET_INDX>().reset_indx,
guest_index_endian);
// - VGT, what does the guest say about its primitive reset index?
// - It's over 0xFFFF!!!
// - What!? 0xFFFF!? There's no way that can be stored in 16 bits!
guest_primitive_reset_enabled =
guest_index_format == xenos::IndexFormat::kInt16
? guest_primitive_reset_index_guest_endian <= UINT16_MAX
: true;
break;
default:
// Vulkan explicitly disallows primitive restart index for "list"
// topologies. In Direct3D 12, it's valid for non-strips, but has
// implementation-defined behavior. Make backend usage simpler by
// explicitly filtering lists out, and hope the guest never uses
// primitive reset for lists.
break;
}
}
}

3
src/xenia/gpu/primitive_processor.h
View File

@ -138,7 +138,8 @@ class PrimitiveProcessor {
xenos::IndexFormat host_index_format;
xenos::Endian host_index_endian;
// The reset index, if enabled, is always 0xFFFF for host_index_format
// kInt16 and 0xFFFFFFFF for kInt32.
// kInt16 and 0xFFFFFFFF for kInt32. Never enabled for "list" primitive
// types, thus safe for direct usage on Vulkan.
bool host_primitive_reset_enabled;
// Backend-specific handle for the index buffer valid for the current draw,
// only valid for index_buffer_type kHostConverted and kHostBuiltin.