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Merge pull request #4807 from ReinUsesLisp/glasm-robust-ssbo 

gl_arb_decompiler: Implement robust buffer operations
This commit is contained in:
LC 2020-10-20 19:19:38 -04:00 committed by GitHub
parent 88d5140cf2 f21a189148
commit 536c51912d
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 54 additions and 33 deletions
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31
src/video_core/renderer_opengl/gl_arb_decompiler.cpp
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@ -376,9 +376,11 @@ private:
std::string temporary = AllocTemporary();
std::string address;
std::string_view opname;
bool robust = false;
if (const auto gmem = std::get_if<GmemNode>(&*operation[0])) {
address = GlobalMemoryPointer(*gmem);
opname = "ATOM";
robust = true;
} else if (const auto smem = std::get_if<SmemNode>(&*operation[0])) {
address = fmt::format("shared_mem[{}]", Visit(smem->GetAddress()));
opname = "ATOMS";
@ -386,7 +388,15 @@ private:
UNREACHABLE();
return "{0, 0, 0, 0}";
}
if (robust) {
AddLine("IF NE.x;");
}
AddLine("{}.{}.{} {}, {}, {};", opname, op, type, temporary, Visit(operation[1]), address);
if (robust) {
AddLine("ELSE;");
AddLine("MOV.S {}, 0;", temporary);
AddLine("ENDIF;");
}
return temporary;
}
@ -980,10 +990,9 @@ void ARBDecompiler::DeclareLocalMemory() {
}
void ARBDecompiler::DeclareGlobalMemory() {
const std::size_t num_entries = ir.GetGlobalMemory().size();
const size_t num_entries = ir.GetGlobalMemory().size();
if (num_entries > 0) {
const std::size_t num_vectors = Common::AlignUp(num_entries, 2) / 2;
AddLine("PARAM c[{}] = {{ program.local[0..{}] }};", num_vectors, num_vectors - 1);
AddLine("PARAM c[{}] = {{ program.local[0..{}] }};", num_entries, num_entries - 1);
}
}
@ -1363,7 +1372,8 @@ std::string ARBDecompiler::Visit(const Node& node) {
if (const auto gmem = std::get_if<GmemNode>(&*node)) {
std::string temporary = AllocTemporary();
AddLine("LOAD.U32 {}, {};", temporary, GlobalMemoryPointer(*gmem));
AddLine("MOV {}, 0;", temporary);
AddLine("LOAD.U32 {} (NE.x), {};", temporary, GlobalMemoryPointer(*gmem));
return temporary;
}
@ -1441,18 +1451,21 @@ std::string ARBDecompiler::BuildAoffi(Operation operation) {
}
std::string ARBDecompiler::GlobalMemoryPointer(const GmemNode& gmem) {
// Read a bindless SSBO, return its address and set CC accordingly
// address = c[binding].xy
// length = c[binding].z
const u32 binding = global_memory_names.at(gmem.GetDescriptor());
const char result_swizzle = binding % 2 == 0 ? 'x' : 'y';
const std::string pointer = AllocLongVectorTemporary();
std::string temporary = AllocTemporary();
const u32 local_index = binding / 2;
AddLine("PK64.U {}, c[{}];", pointer, local_index);
AddLine("PK64.U {}, c[{}];", pointer, binding);
AddLine("SUB.U {}, {}, {};", temporary, Visit(gmem.GetRealAddress()),
Visit(gmem.GetBaseAddress()));
AddLine("CVT.U64.U32 {}.z, {};", pointer, temporary);
AddLine("ADD.U64 {}.x, {}.{}, {}.z;", pointer, pointer, result_swizzle, pointer);
AddLine("ADD.U64 {}.x, {}.x, {}.z;", pointer, pointer, pointer);
// Compare offset to length and set CC
AddLine("SLT.U.CC RC.x, {}, c[{}].z;", temporary, binding);
return fmt::format("{}.x", pointer);
}
@ -1552,7 +1565,9 @@ std::string ARBDecompiler::Assign(Operation operation) {
ResetTemporaries();
return {};
} else if (const auto gmem = std::get_if<GmemNode>(&*dest)) {
AddLine("IF NE.x;");
AddLine("STORE.U32 {}, {};", Visit(src), GlobalMemoryPointer(*gmem));
AddLine("ENDIF;");
ResetTemporaries();
return {};
} else {

47
src/video_core/renderer_opengl/gl_rasterizer.cpp
View File

@ -139,16 +139,12 @@ void oglEnable(GLenum cap, bool state) {
(state ? glEnable : glDisable)(cap);
}
void UpdateBindlessPointers(GLenum target, GLuint64EXT* pointers, std::size_t num_entries) {
if (num_entries == 0) {
void UpdateBindlessSSBOs(GLenum target, const BindlessSSBO* ssbos, size_t num_ssbos) {
if (num_ssbos == 0) {
return;
}
if (num_entries % 2 == 1) {
pointers[num_entries] = 0;
}
const GLsizei num_vectors = static_cast<GLsizei>((num_entries + 1) / 2);
glProgramLocalParametersI4uivNV(target, 0, num_vectors,
reinterpret_cast<const GLuint*>(pointers));
glProgramLocalParametersI4uivNV(target, 0, static_cast<GLsizei>(num_ssbos),
reinterpret_cast<const GLuint*>(ssbos));
}
} // Anonymous namespace
@ -900,11 +896,11 @@ bool RasterizerOpenGL::AccelerateDisplay(const Tegra::FramebufferConfig& config,
}
void RasterizerOpenGL::SetupDrawConstBuffers(std::size_t stage_index, Shader* shader) {
static constexpr std::array PARAMETER_LUT = {
GL_VERTEX_PROGRAM_PARAMETER_BUFFER_NV, GL_TESS_CONTROL_PROGRAM_PARAMETER_BUFFER_NV,
static constexpr std::array PARAMETER_LUT{
GL_VERTEX_PROGRAM_PARAMETER_BUFFER_NV, GL_TESS_CONTROL_PROGRAM_PARAMETER_BUFFER_NV,
GL_TESS_EVALUATION_PROGRAM_PARAMETER_BUFFER_NV, GL_GEOMETRY_PROGRAM_PARAMETER_BUFFER_NV,
GL_FRAGMENT_PROGRAM_PARAMETER_BUFFER_NV};
GL_FRAGMENT_PROGRAM_PARAMETER_BUFFER_NV,
};
MICROPROFILE_SCOPE(OpenGL_UBO);
const auto& stages = maxwell3d.state.shader_stages;
const auto& shader_stage = stages[stage_index];
@ -1007,8 +1003,8 @@ void RasterizerOpenGL::SetupDrawGlobalMemory(std::size_t stage_index, Shader* sh
const auto& cbufs{maxwell3d.state.shader_stages[stage_index]};
const auto& entries{shader->GetEntries().global_memory_entries};
std::array<GLuint64EXT, 32> pointers;
ASSERT(entries.size() < pointers.size());
std::array<BindlessSSBO, 32> ssbos;
ASSERT(entries.size() < ssbos.size());
const bool assembly_shaders = device.UseAssemblyShaders();
u32 binding = assembly_shaders ? 0 : device.GetBaseBindings(stage_index).shader_storage_buffer;
@ -1016,11 +1012,11 @@ void RasterizerOpenGL::SetupDrawGlobalMemory(std::size_t stage_index, Shader* sh
const GPUVAddr addr{cbufs.const_buffers[entry.cbuf_index].address + entry.cbuf_offset};
const GPUVAddr gpu_addr{gpu_memory.Read<u64>(addr)};
const u32 size{gpu_memory.Read<u32>(addr + 8)};
SetupGlobalMemory(binding, entry, gpu_addr, size, &pointers[binding]);
SetupGlobalMemory(binding, entry, gpu_addr, size, &ssbos[binding]);
++binding;
}
if (assembly_shaders) {
UpdateBindlessPointers(TARGET_LUT[stage_index], pointers.data(), entries.size());
UpdateBindlessSSBOs(TARGET_LUT[stage_index], ssbos.data(), entries.size());
}
}
@ -1028,29 +1024,32 @@ void RasterizerOpenGL::SetupComputeGlobalMemory(Shader* kernel) {
const auto& cbufs{kepler_compute.launch_description.const_buffer_config};
const auto& entries{kernel->GetEntries().global_memory_entries};
std::array<GLuint64EXT, 32> pointers;
ASSERT(entries.size() < pointers.size());
std::array<BindlessSSBO, 32> ssbos;
ASSERT(entries.size() < ssbos.size());
u32 binding = 0;
for (const auto& entry : entries) {
const GPUVAddr addr{cbufs[entry.cbuf_index].Address() + entry.cbuf_offset};
const GPUVAddr gpu_addr{gpu_memory.Read<u64>(addr)};
const u32 size{gpu_memory.Read<u32>(addr + 8)};
SetupGlobalMemory(binding, entry, gpu_addr, size, &pointers[binding]);
SetupGlobalMemory(binding, entry, gpu_addr, size, &ssbos[binding]);
++binding;
}
if (device.UseAssemblyShaders()) {
UpdateBindlessPointers(GL_COMPUTE_PROGRAM_NV, pointers.data(), entries.size());
UpdateBindlessSSBOs(GL_COMPUTE_PROGRAM_NV, ssbos.data(), ssbos.size());
}
}
void RasterizerOpenGL::SetupGlobalMemory(u32 binding, const GlobalMemoryEntry& entry,
GPUVAddr gpu_addr, std::size_t size,
GLuint64EXT* pointer) {
const std::size_t alignment{device.GetShaderStorageBufferAlignment()};
GPUVAddr gpu_addr, size_t size, BindlessSSBO* ssbo) {
const size_t alignment{device.GetShaderStorageBufferAlignment()};
const auto info = buffer_cache.UploadMemory(gpu_addr, size, alignment, entry.is_written);
if (device.UseAssemblyShaders()) {
*pointer = info.address + info.offset;
*ssbo = BindlessSSBO{
.address = static_cast<GLuint64EXT>(info.address + info.offset),
.length = static_cast<GLsizei>(size),
.padding = 0,
};
} else {
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, binding, info.handle, info.offset,
static_cast<GLsizeiptr>(size));

9
src/video_core/renderer_opengl/gl_rasterizer.h
View File

@ -53,6 +53,13 @@ namespace OpenGL {
struct ScreenInfo;
struct DrawParameters;
struct BindlessSSBO {
GLuint64EXT address;
GLsizei length;
GLsizei padding;
};
static_assert(sizeof(BindlessSSBO) * CHAR_BIT == 128);
class RasterizerOpenGL : public VideoCore::RasterizerAccelerated {
public:
explicit RasterizerOpenGL(Core::Frontend::EmuWindow& emu_window, Tegra::GPU& gpu,
@ -126,7 +133,7 @@ private:
/// Configures a global memory buffer.
void SetupGlobalMemory(u32 binding, const GlobalMemoryEntry& entry, GPUVAddr gpu_addr,
std::size_t size, GLuint64EXT* pointer);
size_t size, BindlessSSBO* ssbo);
/// Configures the current textures to use for the draw command.
void SetupDrawTextures(std::size_t stage_index, Shader* shader);