eden-emu
/
eden
mirror of https://git.eden-emu.dev/eden-emu/eden.git
1
0
Fork 0
Code Releases Wiki Activity
Browse Source

gl_shader_decompiler: Implement GLSL physical attributes

nce_cpp
ReinUsesLisp 7 years ago
parent
f96020b2ae
commit
7680b96e1a
2 changed files with 101 additions and 66 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 165
      src/video_core/renderer_opengl/gl_shader_decompiler.cpp
  2. 2
      src/video_core/shader/shader_ir.h

165
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View File

@ -165,6 +165,7 @@ public:
DeclareConstantBuffers();
DeclareGlobalMemory();
DeclareSamplers();
DeclarePhysicalAttributeReader();
code.AddLine("void execute_" + suffix + "() {");
++code.scope;
@ -330,8 +331,7 @@ private:
void DeclareInputAttributes() {
if (ir.HasPhysicalAttributes()) {
const u32 num_inputs{stage == ShaderStage::Vertex ? GetNumPhysicalAttributes()
: GetNumPhysicalVaryings()};
const u32 num_inputs{GetNumPhysicalInputAttributes()};
for (u32 i = 0; i < num_inputs; ++i) {
DeclareInputAttribute(ToGenericAttribute(i));
}
@ -374,7 +374,7 @@ private:
}
void DeclareOutputAttributes() {
if (ir.HasPhysicalAttributes()) {
if (ir.HasPhysicalAttributes() && stage != ShaderStage::Fragment) {
for (u32 i = 0; i < GetNumPhysicalVaryings(); ++i) {
DeclareOutputAttribute(ToGenericAttribute(i));
}
@ -461,6 +461,31 @@ private:
code.AddNewLine();
}
void DeclarePhysicalAttributeReader() {
if (!ir.HasPhysicalAttributes()) {
return;
}
code.AddLine("float readPhysicalAttribute(uint physical_address) {");
++code.scope;
code.AddLine("switch (physical_address) {");
// Just declare generic attributes for now.
const auto num_attributes{static_cast<u32>(GetNumPhysicalAttributes())};
for (u32 index = 0; index < num_attributes; ++index) {
for (u32 element = 0; element < 4; ++element) {
code.AddLine(fmt::format("case 0x{:x}: return {};", 0x80 + index * 16 + element * 4,
ReadAttribute(ToGenericAttribute(index), element)));
}
}
code.AddLine("default: return 0;");
code.AddLine('}');
--code.scope;
code.AddLine('}');
code.AddNewLine();
}
void VisitBlock(const NodeBlock& bb) {
for (const Node node : bb) {
if (const std::string expr = Visit(node); !expr.empty()) {
@ -515,69 +540,12 @@ private:
return value;
} else if (const auto abuf = std::get_if<AbufNode>(node)) {
const auto attribute = abuf->GetIndex();
const auto element = abuf->GetElement();
const auto GeometryPass = [&](const std::string& name) {
if (stage == ShaderStage::Geometry && abuf->GetBuffer()) {
// TODO(Rodrigo): Guard geometry inputs against out of bound reads. Some games
// set an 0x80000000 index for those and the shader fails to build. Find out why
// this happens and what's its intent.
return "gs_" + name + "[ftou(" + Visit(abuf->GetBuffer()) +
") % MAX_VERTEX_INPUT]";
}
return name;
};
switch (attribute) {
case Attribute::Index::Position:
if (stage != ShaderStage::Fragment) {
return GeometryPass("position") + GetSwizzle(element);
} else {
return element == 3 ? "1.0f" : "gl_FragCoord" + GetSwizzle(element);
}
case Attribute::Index::PointCoord:
switch (element) {
case 0:
return "gl_PointCoord.x";
case 1:
return "gl_PointCoord.y";
case 2:
case 3:
return "0";
}
UNREACHABLE();
return "0";
case Attribute::Index::TessCoordInstanceIDVertexID:
// TODO(Subv): Find out what the values are for the first two elements when inside a
// vertex shader, and what's the value of the fourth element when inside a Tess Eval
// shader.
ASSERT(stage == ShaderStage::Vertex);
switch (element) {
case 2:
// Config pack's first value is instance_id.
return "uintBitsToFloat(config_pack[0])";
case 3:
return "uintBitsToFloat(gl_VertexID)";
}
UNIMPLEMENTED_MSG("Unmanaged TessCoordInstanceIDVertexID element={}", element);
return "0";
case Attribute::Index::FrontFacing:
// TODO(Subv): Find out what the values are for the other elements.
ASSERT(stage == ShaderStage::Fragment);
switch (element) {
case 3:
return "itof(gl_FrontFacing ? -1 : 0)";
}
UNIMPLEMENTED_MSG("Unmanaged FrontFacing element={}", element);
return "0";
default:
if (IsGenericAttribute(attribute)) {
return GeometryPass(GetInputAttribute(attribute)) + GetSwizzle(element);
}
break;
UNIMPLEMENTED_IF_MSG(abuf->IsPhysicalBuffer() && stage == ShaderStage::Geometry,
"Physical attributes in geometry shaders are not implemented");
if (abuf->IsPhysicalBuffer()) {
return "readPhysicalAttribute(ftou(" + Visit(abuf->GetPhysicalAddress()) + "))";
}
UNIMPLEMENTED_MSG("Unhandled input attribute: {}", static_cast<u32>(attribute));
return ReadAttribute(abuf->GetIndex(), abuf->GetElement(), abuf->GetBuffer());
} else if (const auto cbuf = std::get_if<CbufNode>(node)) {
const Node offset = cbuf->GetOffset();
@ -629,6 +597,69 @@ private:
return {};
}
std::string ReadAttribute(Attribute::Index attribute, u32 element, Node buffer = {}) {
const auto GeometryPass = [&](std::string name) {
if (stage == ShaderStage::Geometry && buffer) {
// TODO(Rodrigo): Guard geometry inputs against out of bound reads. Some games
// set an 0x80000000 index for those and the shader fails to build. Find out why
// this happens and what's its intent.
return "gs_" + std::move(name) + "[ftou(" + Visit(buffer) + ") % MAX_VERTEX_INPUT]";
}
return name;
};
switch (attribute) {
case Attribute::Index::Position:
if (stage != ShaderStage::Fragment) {
return GeometryPass("position") + GetSwizzle(element);
} else {
return element == 3 ? "1.0f" : "gl_FragCoord" + GetSwizzle(element);
}
case Attribute::Index::PointCoord:
switch (element) {
case 0:
return "gl_PointCoord.x";
case 1:
return "gl_PointCoord.y";
case 2:
case 3:
return "0";
}
UNREACHABLE();
return "0";
case Attribute::Index::TessCoordInstanceIDVertexID:
// TODO(Subv): Find out what the values are for the first two elements when inside a
// vertex shader, and what's the value of the fourth element when inside a Tess Eval
// shader.
ASSERT(stage == ShaderStage::Vertex);
switch (element) {
case 2:
// Config pack's first value is instance_id.
return "uintBitsToFloat(config_pack[0])";
case 3:
return "uintBitsToFloat(gl_VertexID)";
}
UNIMPLEMENTED_MSG("Unmanaged TessCoordInstanceIDVertexID element={}", element);
return "0";
case Attribute::Index::FrontFacing:
// TODO(Subv): Find out what the values are for the other elements.
ASSERT(stage == ShaderStage::Fragment);
switch (element) {
case 3:
return "itof(gl_FrontFacing ? -1 : 0)";
}
UNIMPLEMENTED_MSG("Unmanaged FrontFacing element={}", element);
return "0";
default:
if (IsGenericAttribute(attribute)) {
return GeometryPass(GetInputAttribute(attribute)) + GetSwizzle(element);
}
break;
}
UNIMPLEMENTED_MSG("Unhandled input attribute: {}", static_cast<u32>(attribute));
return "0";
}
std::string ApplyPrecise(Operation operation, const std::string& value) {
if (!IsPrecise(operation)) {
return value;
@ -1677,6 +1708,10 @@ private:
return name + '_' + std::to_string(index) + '_' + suffix;
}
u32 GetNumPhysicalInputAttributes() const {
return stage == ShaderStage::Vertex ? GetNumPhysicalAttributes() : GetNumPhysicalVaryings();
}
u32 GetNumPhysicalAttributes() const {
return std::min<u32>(device.GetMaxVertexAttributes(), Maxwell::NumVertexAttributes);
}

2
src/video_core/shader/shader_ir.h
View File

@ -885,7 +885,7 @@ private:
std::set<Sampler> used_samplers;
std::array<bool, Tegra::Engines::Maxwell3D::Regs::NumClipDistances> used_clip_distances{};
std::map<GlobalMemoryBase, GlobalMemoryUsage> used_global_memory;
bool use_physical_attributes = true; // Shader uses AL2P
bool use_physical_attributes{}; // Shader uses AL2P or physical attribute read/writes
Tegra::Shader::Header header;
};

Write Preview
Loading…
Cancel
Save