BeeEngine/glslang-zig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add support for GL_EXT_buffer_reference2

Browse source
This commit is contained in:
Jeff Bolz 2019-03-08 10:42:49 -06:00
parent 86c72c9486
commit 758c93364c
12 changed files with 553 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

64
glslang/MachineIndependent/reflection.cpp
View file

@ -143,45 +143,6 @@ public:
}
}
// shared calculation by getOffset and getOffsets
void updateOffset(const TType& parentType, const TType& memberType, int& offset, int& memberSize)
{
int dummyStride;
// modify just the children's view of matrix layout, if there is one for this member
TLayoutMatrix subMatrixLayout = memberType.getQualifier().layoutMatrix;
int memberAlignment = intermediate.getMemberAlignment(memberType, memberSize, dummyStride,
parentType.getQualifier().layoutPacking,
subMatrixLayout != ElmNone
? subMatrixLayout == ElmRowMajor
: parentType.getQualifier().layoutMatrix == ElmRowMajor);
RoundToPow2(offset, memberAlignment);
}
// Lookup or calculate the offset of a block member, using the recursively
// defined block offset rules.
int getOffset(const TType& type, int index)
{
const TTypeList& memberList = *type.getStruct();
// Don't calculate offset if one is present, it could be user supplied
// and different than what would be calculated. That is, this is faster,
// but not just an optimization.
if (memberList[index].type->getQualifier().hasOffset())
return memberList[index].type->getQualifier().layoutOffset;
int memberSize = 0;
int offset = 0;
for (int m = 0; m <= index; ++m) {
updateOffset(type, *memberList[m].type, offset, memberSize);
if (m < index)
offset += memberSize;
}
return offset;
}
// Lookup or calculate the offset of all block members at once, using the recursively
// defined block offset rules.
void getOffsets(const TType& type, TVector<int>& offsets)
@ -196,7 +157,7 @@ public:
offset = memberList[m].type->getQualifier().layoutOffset;
// calculate the offset of the next member and align the current offset to this member
updateOffset(type, *memberList[m].type, offset, memberSize);
intermediate.updateOffset(type, *memberList[m].type, offset, memberSize);
// save the offset of this member
offsets[m] = offset;
@ -226,23 +187,6 @@ public:
return stride;
}
// Calculate the block data size.
// Block arrayness is not taken into account, each element is backed by a separate buffer.
int getBlockSize(const TType& blockType)
{
const TTypeList& memberList = *blockType.getStruct();
int lastIndex = (int)memberList.size() - 1;
int lastOffset = getOffset(blockType, lastIndex);
int lastMemberSize;
int dummyStride;
intermediate.getMemberAlignment(*memberList[lastIndex].type, lastMemberSize, dummyStride,
blockType.getQualifier().layoutPacking,
blockType.getQualifier().layoutMatrix == ElmRowMajor);
return lastOffset + lastMemberSize;
}
// count the total number of leaf members from iterating out of a block type
int countAggregateMembers(const TType& parentType)
{
@ -349,7 +293,7 @@ public:
case EOpIndexDirectStruct:
index = visitNode->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst();
if (offset >= 0)
offset += getOffset(visitNode->getLeft()->getType(), index);
offset += intermediate.getOffset(visitNode->getLeft()->getType(), index);
if (name.size() > 0)
name.append(".");
name.append((*visitNode->getLeft()->getType().getStruct())[index].type->getFieldName());
@ -592,10 +536,10 @@ public:
assert(! anonymous);
for (int e = 0; e < base->getType().getCumulativeArraySize(); ++e)
blockIndex = addBlockName(blockName + "[" + String(e) + "]", derefType,
getBlockSize(base->getType()));
intermediate.getBlockSize(base->getType()));
baseName.append(TString("[0]"));
} else
blockIndex = addBlockName(blockName, base->getType(), getBlockSize(base->getType()));
blockIndex = addBlockName(blockName, base->getType(), intermediate.getBlockSize(base->getType()));
if (reflection.options & EShReflectionAllBlockVariables) {
// Use a degenerate (empty) set of dereferences to immediately put as at the end of