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GL_EXT_buffer_reference

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This commit is contained in:
Jeff Bolz
2019-01-06 17:58:04 -06:00
parent 6eab476e5a
commit 9f2aec49e9
55 changed files with 3093 additions and 103 deletions
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119
SPIRV/SpvBuilder.cpp
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@@ -194,6 +194,40 @@ Id Builder::makePointer(StorageClass storageClass, Id pointee)
return type->getResultId();
}
Id Builder::makeForwardPointer(StorageClass storageClass)
{
// Caching/uniquifying doesn't work here, because we don't know the
// pointee type and there can be multiple forward pointers of the same
// storage type. Somebody higher up in the stack must keep track.
Instruction* type = new Instruction(getUniqueId(), NoType, OpTypeForwardPointer);
type->addImmediateOperand(storageClass);
constantsTypesGlobals.push_back(std::unique_ptr<Instruction>(type));
module.mapInstruction(type);
return type->getResultId();
}
Id Builder::makePointerFromForwardPointer(StorageClass storageClass, Id forwardPointerType, Id pointee)
{
// try to find it
Instruction* type;
for (int t = 0; t < (int)groupedTypes[OpTypePointer].size(); ++t) {
type = groupedTypes[OpTypePointer][t];
if (type->getImmediateOperand(0) == (unsigned)storageClass &&
type->getIdOperand(1) == pointee)
return type->getResultId();
}
type = new Instruction(forwardPointerType, NoType, OpTypePointer);
type->addImmediateOperand(storageClass);
type->addIdOperand(pointee);
groupedTypes[OpTypePointer].push_back(type);
constantsTypesGlobals.push_back(std::unique_ptr<Instruction>(type));
module.mapInstruction(type);
return type->getResultId();
}
Id Builder::makeIntegerType(int width, bool hasSign)
{
// try to find it
@@ -576,6 +610,7 @@ int Builder::getNumTypeConstituents(Id typeId) const
case OpTypeBool:
case OpTypeInt:
case OpTypeFloat:
case OpTypePointer:
return 1;
case OpTypeVector:
case OpTypeMatrix:
@@ -669,17 +704,36 @@ bool Builder::containsType(Id typeId, spv::Op typeOp, unsigned int width) const
return true;
}
return false;
case OpTypePointer:
return false;
case OpTypeVector:
case OpTypeMatrix:
case OpTypeArray:
case OpTypeRuntimeArray:
case OpTypePointer:
return containsType(getContainedTypeId(typeId), typeOp, width);
default:
return typeClass == typeOp;
}
}
// return true if the type is a pointer to PhysicalStorageBufferEXT or an
// array of such pointers. These require restrict/aliased decorations.
bool Builder::containsPhysicalStorageBufferOrArray(Id typeId) const
{
const Instruction& instr = *module.getInstruction(typeId);
Op typeClass = instr.getOpCode();
switch (typeClass)
{
case OpTypePointer:
return getTypeStorageClass(typeId) == StorageClassPhysicalStorageBufferEXT;
case OpTypeArray:
return containsPhysicalStorageBufferOrArray(getContainedTypeId(typeId));
default:
return false;
}
}
// See if a scalar constant of this type has already been created, so it
// can be reused rather than duplicated. (Required by the specification).
Id Builder::findScalarConstant(Op typeClass, Op opcode, Id typeId, unsigned value)
@@ -1252,15 +1306,39 @@ Id Builder::createUndefined(Id type)
return inst->getResultId();
}
// av/vis/nonprivate are unnecessary and illegal for some storage classes.
spv::MemoryAccessMask Builder::sanitizeMemoryAccessForStorageClass(spv::MemoryAccessMask memoryAccess, StorageClass sc) const
{
switch (sc) {
case spv::StorageClassUniform:
case spv::StorageClassWorkgroup:
case spv::StorageClassStorageBuffer:
case spv::StorageClassPhysicalStorageBufferEXT:
break;
default:
memoryAccess = spv::MemoryAccessMask(memoryAccess &
~(spv::MemoryAccessMakePointerAvailableKHRMask |
spv::MemoryAccessMakePointerVisibleKHRMask |
spv::MemoryAccessNonPrivatePointerKHRMask));
break;
}
return memoryAccess;
}
// Comments in header
void Builder::createStore(Id rValue, Id lValue, spv::MemoryAccessMask memoryAccess, spv::Scope scope)
void Builder::createStore(Id rValue, Id lValue, spv::MemoryAccessMask memoryAccess, spv::Scope scope, unsigned int alignment)
{
Instruction* store = new Instruction(OpStore);
store->addIdOperand(lValue);
store->addIdOperand(rValue);
memoryAccess = sanitizeMemoryAccessForStorageClass(memoryAccess, getStorageClass(lValue));
if (memoryAccess != MemoryAccessMaskNone) {
store->addImmediateOperand(memoryAccess);
if (memoryAccess & spv::MemoryAccessAlignedMask) {
store->addImmediateOperand(alignment);
}
if (memoryAccess & spv::MemoryAccessMakePointerAvailableKHRMask) {
store->addIdOperand(makeUintConstant(scope));
}
@@ -1270,13 +1348,18 @@ void Builder::createStore(Id rValue, Id lValue, spv::MemoryAccessMask memoryAcce
}
// Comments in header
Id Builder::createLoad(Id lValue, spv::MemoryAccessMask memoryAccess, spv::Scope scope)
Id Builder::createLoad(Id lValue, spv::MemoryAccessMask memoryAccess, spv::Scope scope, unsigned int alignment)
{
Instruction* load = new Instruction(getUniqueId(), getDerefTypeId(lValue), OpLoad);
load->addIdOperand(lValue);
memoryAccess = sanitizeMemoryAccessForStorageClass(memoryAccess, getStorageClass(lValue));
if (memoryAccess != MemoryAccessMaskNone) {
load->addImmediateOperand(memoryAccess);
if (memoryAccess & spv::MemoryAccessAlignedMask) {
load->addImmediateOperand(alignment);
}
if (memoryAccess & spv::MemoryAccessMakePointerVisibleKHRMask) {
load->addIdOperand(makeUintConstant(scope));
}
@@ -2118,7 +2201,8 @@ Id Builder::createConstructor(Decoration precision, const std::vector<Id>& sourc
// Go through the source arguments, each one could have either
// a single or multiple components to contribute.
for (unsigned int i = 0; i < sources.size(); ++i) {
if (isScalar(sources[i]))
if (isScalar(sources[i]) || isPointer(sources[i]))
latchResult(sources[i]);
else if (isVector(sources[i]))
accumulateVectorConstituents(sources[i]);
@@ -2433,11 +2517,15 @@ void Builder::clearAccessChain()
accessChain.preSwizzleBaseType = NoType;
accessChain.isRValue = false;
accessChain.coherentFlags.clear();
accessChain.alignment = 0;
}
// Comments in header
void Builder::accessChainPushSwizzle(std::vector<unsigned>& swizzle, Id preSwizzleBaseType)
void Builder::accessChainPushSwizzle(std::vector<unsigned>& swizzle, Id preSwizzleBaseType, AccessChain::CoherentFlags coherentFlags, unsigned int alignment)
{
accessChain.coherentFlags |= coherentFlags;
accessChain.alignment |= alignment;
// swizzles can be stacked in GLSL, but simplified to a single
// one here; the base type doesn't change
if (accessChain.preSwizzleBaseType == NoType)
@@ -2459,7 +2547,7 @@ void Builder::accessChainPushSwizzle(std::vector<unsigned>& swizzle, Id preSwizz
}
// Comments in header
void Builder::accessChainStore(Id rvalue, spv::MemoryAccessMask memoryAccess, spv::Scope scope)
void Builder::accessChainStore(Id rvalue, spv::MemoryAccessMask memoryAccess, spv::Scope scope, unsigned int alignment)
{
assert(accessChain.isRValue == false);
@@ -2477,11 +2565,17 @@ void Builder::accessChainStore(Id rvalue, spv::MemoryAccessMask memoryAccess, sp
source = createLvalueSwizzle(getTypeId(tempBaseId), tempBaseId, source, accessChain.swizzle);
}
createStore(source, base, memoryAccess, scope);
// take LSB of alignment
alignment = alignment & ~(alignment & (alignment-1));
if (getStorageClass(base) == StorageClassPhysicalStorageBufferEXT) {
memoryAccess = (spv::MemoryAccessMask)(memoryAccess | spv::MemoryAccessAlignedMask);
}
createStore(source, base, memoryAccess, scope, alignment);
}
// Comments in header
Id Builder::accessChainLoad(Decoration precision, Decoration nonUniform, Id resultType, spv::MemoryAccessMask memoryAccess, spv::Scope scope)
Id Builder::accessChainLoad(Decoration precision, Decoration nonUniform, Id resultType, spv::MemoryAccessMask memoryAccess, spv::Scope scope, unsigned int alignment)
{
Id id;
@@ -2524,8 +2618,15 @@ Id Builder::accessChainLoad(Decoration precision, Decoration nonUniform, Id resu
id = accessChain.base; // no precision, it was set when this was defined
} else {
transferAccessChainSwizzle(true);
// take LSB of alignment
alignment = alignment & ~(alignment & (alignment-1));
if (getStorageClass(accessChain.base) == StorageClassPhysicalStorageBufferEXT) {
memoryAccess = (spv::MemoryAccessMask)(memoryAccess | spv::MemoryAccessAlignedMask);
}
// load through the access chain
id = createLoad(collapseAccessChain(), memoryAccess, scope);
id = createLoad(collapseAccessChain(), memoryAccess, scope, alignment);
setPrecision(id, precision);
addDecoration(id, nonUniform);
}