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SPV: Add recursive distrubition of 'location' across structure members.

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This commit is contained in:
John Kessenich 2016-01-21 18:56:57 -07:00
parent 7a53f76d38
commit 7b9fa25bad
3 changed files with 55 additions and 14 deletions
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20
SPIRV/GlslangToSpv.cpp
View File

@ -437,15 +437,17 @@ void InheritQualifiers(glslang::TQualifier& child, const glslang::TQualifier& pa
child.patch = true;
if (parent.sample)
child.sample = true;
child.layoutLocation = parent.layoutLocation;
}
bool HasNonLayoutQualifiers(const glslang::TQualifier& qualifier)
{
// This should list qualifiers that simultaneous satisify:
// This should list qualifiers that simultaneous satisfy:
// - struct members can inherit from a struct declaration
// - effect decorations on the struct members (note smooth does not, and expecting something like volatile to effect the whole object)
// - are not part of the offset/st430/etc or row/column-major layout
return qualifier.invariant || qualifier.nopersp || qualifier.flat || qualifier.centroid || qualifier.patch || qualifier.sample;
return qualifier.invariant || qualifier.nopersp || qualifier.flat || qualifier.centroid || qualifier.patch || qualifier.sample || qualifier.hasLocation();
}
//
@ -1528,7 +1530,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
}
// Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
// explicitLayout can be kept the same throughout the heirarchical recursive walk.
// explicitLayout can be kept the same throughout the hierarchical recursive walk.
spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& type, glslang::TLayoutPacking explicitLayout, const glslang::TQualifier& qualifier)
{
spv::Id spvType = spv::NoResult;
@ -1588,6 +1590,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
int memberDelta = 0; // how much the member's index changes from glslang to SPIR-V, normally 0, except sometimes for blocks
if (type.getBasicType() == glslang::EbtBlock)
memberRemapper[glslangStruct].resize(glslangStruct->size());
int locationOffset = 0; // for use across struct members, when they are called recursively
for (int i = 0; i < (int)glslangStruct->size(); i++) {
glslang::TType& glslangType = *(*glslangStruct)[i].type;
if (glslangType.hiddenMember()) {
@ -1600,6 +1603,10 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
// modify just this child's view of the qualifier
glslang::TQualifier subQualifier = glslangType.getQualifier();
InheritQualifiers(subQualifier, qualifier);
if (qualifier.hasLocation()) {
subQualifier.layoutLocation += locationOffset;
locationOffset += glslangIntermediate->computeTypeLocationSize(glslangType);
}
structFields.push_back(convertGlslangToSpvType(glslangType, explicitLayout, subQualifier));
}
}
@ -1611,6 +1618,7 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
// Name and decorate the non-hidden members
int offset = -1;
locationOffset = 0; // for use within the members of this struct, right now
for (int i = 0; i < (int)glslangStruct->size(); i++) {
glslang::TType& glslangType = *(*glslangStruct)[i].type;
int member = i;
@ -1628,8 +1636,10 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
addMemberDecoration(spvType, member, TranslatePrecisionDecoration(glslangType));
addMemberDecoration(spvType, member, TranslateInterpolationDecoration(subQualifier));
addMemberDecoration(spvType, member, TranslateInvariantDecoration(subQualifier));
if (glslangType.getQualifier().hasLocation())
builder.addMemberDecoration(spvType, member, spv::DecorationLocation, glslangType.getQualifier().layoutLocation);
if (qualifier.hasLocation()) {
builder.addMemberDecoration(spvType, member, spv::DecorationLocation, qualifier.layoutLocation + locationOffset);
locationOffset += glslangIntermediate->computeTypeLocationSize(glslangType);
}
if (glslangType.getQualifier().hasComponent())
builder.addMemberDecoration(spvType, member, spv::DecorationComponent, glslangType.getQualifier().layoutComponent);
if (glslangType.getQualifier().hasXfbOffset())

45
Test/baseResults/spv.430.vert.out
View File

@ -7,12 +7,12 @@ Linked vertex stage:
// Module Version 10000
// Generated by (magic number): 80001
// Id's are bound by 63
// Id's are bound by 69
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Vertex 4 "main" 12 23 34 44 45 61 62
EntryPoint Vertex 4 "main" 12 23 34 44 45 65 67 68
Source GLSL 430
Name 4 "main"
Name 10 "gl_PerVertex"
@ -33,8 +33,17 @@ Linked vertex stage:
Name 55 "sampb1"
Name 58 "sampb2"
Name 59 "sampb4"
Name 61 "gl_VertexID"
Name 62 "gl_InstanceID"
Name 62 "S"
MemberName 62(S) 0 "a"
MemberName 62(S) 1 "b"
MemberName 62(S) 2 "c"
Name 63 "SS"
MemberName 63(SS) 0 "b"
MemberName 63(SS) 1 "s"
MemberName 63(SS) 2 "c"
Name 65 "var"
Name 67 "gl_VertexID"
Name 68 "gl_InstanceID"
MemberDecorate 10(gl_PerVertex) 0 BuiltIn ClipDistance
Decorate 10(gl_PerVertex) Block
Decorate 34(badorder3) Flat
@ -49,8 +58,20 @@ Linked vertex stage:
Decorate 55(sampb1) Binding 4
Decorate 58(sampb2) Binding 5
Decorate 59(sampb4) Binding 31
Decorate 61(gl_VertexID) BuiltIn VertexId
Decorate 62(gl_InstanceID) BuiltIn InstanceId
MemberDecorate 62(S) 0 Flat
MemberDecorate 62(S) 0 Location 1
MemberDecorate 62(S) 1 Flat
MemberDecorate 62(S) 1 Location 2
MemberDecorate 62(S) 2 Flat
MemberDecorate 62(S) 2 Location 3
MemberDecorate 63(SS) 0 Flat
MemberDecorate 63(SS) 0 Location 0
MemberDecorate 63(SS) 1 Flat
MemberDecorate 63(SS) 1 Location 1
MemberDecorate 63(SS) 2 Flat
MemberDecorate 63(SS) 2 Location 4
Decorate 67(gl_VertexID) BuiltIn VertexId
Decorate 68(gl_InstanceID) BuiltIn InstanceId
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
@ -97,9 +118,15 @@ Linked vertex stage:
57: TypePointer UniformConstant 56
58(sampb2): 57(ptr) Variable UniformConstant
59(sampb4): 54(ptr) Variable UniformConstant
60: TypePointer Input 13(int)
61(gl_VertexID): 60(ptr) Variable Input
62(gl_InstanceID): 60(ptr) Variable Input
60: TypeVector 7(int) 2
61: TypeVector 6(float) 3
62(S): TypeStruct 6(float) 60(ivec2) 61(fvec3)
63(SS): TypeStruct 19(fvec4) 62(S) 19(fvec4)
64: TypePointer Output 63(SS)
65(var): 64(ptr) Variable Output
66: TypePointer Input 13(int)
67(gl_VertexID): 66(ptr) Variable Input
68(gl_InstanceID): 66(ptr) Variable Input
4(main): 2 Function None 3
5: Label
18: 17(ptr) AccessChain 12 14 15

4
Test/spv.430.vert
View File

@ -30,3 +30,7 @@ layout(binding = 7) uniform anonblock { int aoeu; } ;
layout(binding = 4) uniform sampler2D sampb1;
layout(binding = 5) uniform sampler2D sampb2[10];
layout(binding = 31) uniform sampler2D sampb4;
struct S { mediump float a; highp uvec2 b; highp vec3 c; };
struct SS { vec4 b; S s; vec4 c; };
layout(location = 0) flat out SS var;