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Initial implementation of layout qualifiers. More to come after uniform blocks are in place.

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@21078 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2013-04-09 01:20:01 +00:00
parent 3ed2db58f1
commit e9942d26f5
8 changed files with 215 additions and 17 deletions
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29
Test/300layout.frag Normal file
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@ -0,0 +1,29 @@
#version 300 es
in vec4 pos;
in vec4 color;
layout(location = 7) out vec4 c;
layout(location = 3) out vec4 p;
//layout(std140) uniform Transform { // layout of this block is std140
// mat4 M1; // row_major
// layout(column_major) mat4 M2; // column major
// mat3 N1; // row_major
//};
//
//uniform T2 { // layout of this block is shared
//...
//};
//
//layout(column_major) uniform T3 { // shared and column_major
// mat4 M3; // column_major
// layout(row_major) mat4 m4; // row major
// mat3 N2; // column_major
//};
void main()
{
c = color;
p = pos;
}

30
Test/300layout.vert Normal file
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@ -0,0 +1,30 @@
#version 300 es
layout(location = 7) in vec4 c;
layout(LocatioN = 3) in vec4 p;
out vec4 pos;
out vec4 color;
layout(shared, column_major, row_major) uniform mat4 m4; // default is now shared and row_major
//layout(std140) uniform Transform { // layout of this block is std140
// mat4 M1; // row_major
// layout(column_major) mat4 M2; // column major
// mat3 N1; // row_major
//};
//
//uniform T2 { // layout of this block is shared
//...
//};
//
//layout(column_major) uniform T3 { // shared and column_major
// mat4 M3; // column_major
// layout(row_major) mat4 m4; // row major
// mat3 N2; // column_major
//};
void main()
{
pos = p * m4;
color = c;
}

2
Test/testlist
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@ -24,6 +24,8 @@ comment.frag
300.vert
300.frag
300BuiltIns.frag
300layout.vert
300layout.frag
330.frag
330comp.frag
constErrors.frag

9
glslang/Include/BaseTypes.h
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@ -64,7 +64,8 @@ enum TStorageQualifier {
EvqConst, // User defined constants and non-output parameters in functions
EvqVaryingIn, // pipeline input, read only
EvqVaryingOut, // pipeline ouput, read/write
EvqUniform, // Readonly, vertex and fragment
EvqUniform, // read only, shader with app
EVqBuffer, // read only, shader with app
// parameters
EvqIn,
@ -102,8 +103,8 @@ __inline const char* getStorageQualifierString(TStorageQualifier q)
case EvqGlobal: return "global"; break;
case EvqConst: return "const"; break;
case EvqConstReadOnly: return "const (read only)"; break;
case EvqVaryingIn: return "shader in"; break;
case EvqVaryingOut: return "shader out"; break;
case EvqVaryingIn: return "in"; break;
case EvqVaryingOut: return "out"; break;
case EvqUniform: return "uniform"; break;
case EvqIn: return "in"; break;
case EvqOut: return "out"; break;
@ -116,7 +117,7 @@ __inline const char* getStorageQualifierString(TStorageQualifier q)
case EvqFace: return "gl_FrontFacing"; break;
case EvqFragCoord: return "gl_FragCoord"; break;
case EvqPointCoord: return "gl_PointCoord"; break;
case EvqFragColor: return "fragment out"; break;
case EvqFragColor: return "fragColor"; break;
case EvqFragDepth: return "gl_FragDepth"; break;
default: return "unknown qualifier";
}

76
glslang/Include/Types.h
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@ -171,7 +171,8 @@ inline TArraySizes NewPoolTArraySizes()
}
//
// TPublicType is a workaround for a problem with the yacc stack, It can't have
// TPublicType (coming up after some dependent declarations)
// is a workaround for a problem with the yacc stack, It can't have
// types that it thinks have non-trivial constructors. It should
// just be used while recognizing the grammar, not anything else. Pointers
// could be used, but also trying to avoid lots of memory management overhead.
@ -180,13 +181,26 @@ inline TArraySizes NewPoolTArraySizes()
// match up or are named the same or anything like that.
//
enum TLayoutPacking {
ElpNone,
ElpShared, // default, but different than saying nothing
ElpStd140,
ElpStd430,
ElpPacked // see bitfield width below
};
enum TLayoutMatrix {
ElmNone,
ElmRowMajor,
ElmColumnMajor // default, but different than saying nothing
}; // see bitfield width below
class TQualifier {
public:
void clear()
{
storage = EvqTemporary;
precision = EpqNone;
buffer = false;
invariant = false;
centroid = false;
smooth = false;
@ -200,10 +214,10 @@ public:
restrict = false;
readonly = false;
writeonly = false;
clearLayout();
}
TStorageQualifier storage : 7;
TStorageQualifier storage : 6;
TPrecisionQualifier precision : 3;
bool buffer : 1;
bool invariant : 1;
bool centroid : 1;
bool smooth : 1;
@ -217,6 +231,7 @@ public:
bool restrict : 1;
bool readonly : 1;
bool writeonly : 1;
bool isMemory()
{
return coherent || volatil || restrict || readonly || writeonly;
@ -229,6 +244,46 @@ public:
{
return centroid || patch || sample;
}
// Implementing an embedded layout-qualifier class here, since C++ can't have a real class bitfield
void clearLayout()
{
layoutMatrix = ElmNone;
layoutPacking = ElpNone;
layoutSlotLocation = layoutLocationEnd;
}
bool hasLayout() const
{
return layoutMatrix != ElmNone ||
layoutPacking != ElpNone ||
layoutSlotLocation != layoutLocationEnd;
}
TLayoutMatrix layoutMatrix : 3;
TLayoutPacking layoutPacking : 4;
unsigned int layoutSlotLocation : 7; // ins/outs should have small numbers, buffer offsets could be large
static const unsigned int layoutLocationEnd = 0x3F;
bool hasLocation() const
{
return layoutSlotLocation != layoutLocationEnd;
}
static const char* getLayoutPackingString(TLayoutPacking packing)
{
switch (packing) {
case ElpPacked: return "packed";
case ElpShared: return "shared";
case ElpStd140: return "std140";
case ElpStd430: return "std430";
default: return "none";
}
}
static const char* getLayoutMatrixString(TLayoutMatrix m)
{
switch (m) {
case ElmColumnMajor: return "column_major";
case ElmRowMajor: return "row_major";
default: return "none";
}
}
};
class TPublicType {
@ -479,8 +534,17 @@ public:
char *p = &buf[0];
char *end = &buf[maxSize];
if (qualifier.buffer)
p += snprintf(p, end - p, "buffer ");
if (qualifier.hasLayout()) {
p += snprintf(p, end - p, "layout(");
if (qualifier.hasLocation())
p += snprintf(p, end - p, "location=%d ", qualifier.layoutSlotLocation);
if (qualifier.layoutMatrix != ElmNone)
p += snprintf(p, end - p, "%s ", TQualifier::getLayoutMatrixString(qualifier.layoutMatrix));
if (qualifier.layoutPacking != ElpNone)
p += snprintf(p, end - p, "%s ", TQualifier::getLayoutPackingString(qualifier.layoutPacking));
p += snprintf(p, end - p, ") ");
}
if (qualifier.invariant)
p += snprintf(p, end - p, "invariant ");
if (qualifier.centroid)

63
glslang/MachineIndependent/ParseHelper.cpp
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@ -38,6 +38,7 @@
#include "Include/InitializeParseContext.h"
#include "osinclude.h"
#include <stdarg.h>
#include <algorithm>
TParseContext::TParseContext(TSymbolTable& symt, TIntermediate& interm, int v, EProfile p, EShLanguage L, TInfoSink& is,
bool fc, EShMessages m) :
@ -706,7 +707,7 @@ bool TParseContext::globalQualifierFixAndErrorCheck(int line, TQualifier& qualif
}
if (language == EShLangVertex && qualifier.storage == EvqVaryingIn &&
(qualifier.isAuxillary() || qualifier.isInterpolation() || qualifier.isMemory() || qualifier.buffer || qualifier.invariant)) {
(qualifier.isAuxillary() || qualifier.isInterpolation() || qualifier.isMemory() || qualifier.invariant)) {
error(line, "vertex input cannot be further qualified", "", "");
return true;
@ -748,9 +749,11 @@ bool TParseContext::mergeQualifiersErrorCheck(int line, TPublicType& left, const
bad = true;
}
// Layout qualifiers
mergeLayoutQualifiers(line, left, right);
// other qualifiers
#define MERGE_SINGLETON(field) bad |= left.qualifier.field && right.qualifier.field; left.qualifier.field |= right.qualifier.field;
MERGE_SINGLETON(buffer);
MERGE_SINGLETON(invariant);
MERGE_SINGLETON(centroid);
MERGE_SINGLETON(smooth);
@ -1086,6 +1089,62 @@ bool TParseContext::paramErrorCheck(int line, TStorageQualifier qualifier, TType
}
}
//
// Layout qualifier stuff.
//
// Put the id's layout qualification into the public type.
void TParseContext::setLayoutQualifier(int line, TPublicType& publicType, TString& id)
{
std::transform(id.begin(), id.end(), id.begin(), ::tolower);
if (id == TQualifier::getLayoutMatrixString(ElmColumnMajor))
publicType.qualifier.layoutMatrix = ElmColumnMajor;
else if (id == TQualifier::getLayoutMatrixString(ElmRowMajor))
publicType.qualifier.layoutMatrix = ElmRowMajor;
else if (id == TQualifier::getLayoutPackingString(ElpPacked))
publicType.qualifier.layoutPacking = ElpPacked;
else if (id == TQualifier::getLayoutPackingString(ElpShared))
publicType.qualifier.layoutPacking = ElpShared;
else if (id == TQualifier::getLayoutPackingString(ElpStd140))
publicType.qualifier.layoutPacking = ElpStd140;
else if (id == TQualifier::getLayoutPackingString(ElpStd430))
publicType.qualifier.layoutPacking = ElpStd430;
else if (id == "location")
error(line, "requires an integer assignment (e.g., location = 4)", "location", "");
else if (id == "binding")
error(line, "requires an integer assignment (e.g., binding = 4)", "binding", "");
else
error(line, "unrecognized layout identifier", id.c_str(), "");
}
// Put the id's layout qualifier value into the public type.
void TParseContext::setLayoutQualifier(int line, TPublicType& publicType, TString& id, int value)
{
std::transform(id.begin(), id.end(), id.begin(), ::tolower);
if (id == "location") {
if ((unsigned int)value >= TQualifier::layoutLocationEnd)
error(line, "value is too large", id.c_str(), "");
else
publicType.qualifier.layoutSlotLocation = value;
} else if (id == "binding")
error(line, "not supported", "binding", "");
else
error(line, "there is no such layout identifier taking an assigned value", id.c_str(), "");
}
// Merge any layout qualifier information from src into dst, leaving everything else in dst alone
void TParseContext::mergeLayoutQualifiers(int line, TPublicType& dst, const TPublicType& src)
{
if (src.qualifier.layoutMatrix != ElmNone)
dst.qualifier.layoutMatrix = src.qualifier.layoutMatrix;
if (src.qualifier.layoutPacking != ElpNone)
dst.qualifier.layoutPacking = src.qualifier.layoutPacking;
if (src.qualifier.hasLocation())
dst.qualifier.layoutSlotLocation = src.qualifier.layoutSlotLocation;
}
/////////////////////////////////////////////////////////////////////////////////
//
// Non-Errors.

5
glslang/MachineIndependent/ParseHelper.h
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@ -129,6 +129,11 @@ struct TParseContext {
bool nonInitConstErrorCheck(int line, TString& identifier, TPublicType& type);
bool nonInitErrorCheck(int line, TString& identifier, TPublicType& type);
bool paramErrorCheck(int line, TStorageQualifier qualifier, TType* type);
void setLayoutQualifier(int line, TPublicType&, TString&);
void setLayoutQualifier(int line, TPublicType&, TString&, int);
void mergeLayoutQualifiers(int line, TPublicType& dest, const TPublicType& src);
const TFunction* findFunction(int line, TFunction* pfnCall, bool *builtIn = 0);
bool executeInitializer(TSourceLoc line, TString& identifier, TPublicType& pType,
TIntermTyped* initializer, TIntermNode*& intermNode, TVariable* variable = 0);

18
glslang/MachineIndependent/glslang.y
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@ -201,7 +201,7 @@ extern void yyerror(const char*);
%type <interm> array_specifier
%type <interm.type> precise_qualifier invariant_qualifier interpolation_qualifier storage_qualifier precision_qualifier
%type <interm.type> layout_qualifier layout_qualifier_id_list
%type <interm.type> layout_qualifier layout_qualifier_id_list layout_qualifier_id
%type <interm.type> type_qualifier fully_specified_type type_specifier
%type <interm.type> single_type_qualifier
@ -1622,22 +1622,31 @@ interpolation_qualifier
layout_qualifier
: LAYOUT LEFT_PAREN layout_qualifier_id_list RIGHT_PAREN {
$$.init($1.line);
$$ = $3;
}
;
layout_qualifier_id_list
: layout_qualifier_id {
$$ = $1;
}
| layout_qualifier_id_list COMMA layout_qualifier_id {
$$ = $1;
parseContext.mergeLayoutQualifiers($2.line, $$, $3);
}
layout_qualifier_id
: IDENTIFIER {
$$.init($1.line);
parseContext.setLayoutQualifier($1.line, $$, *$1.string);
}
| IDENTIFIER EQUAL INTCONSTANT {
$$.init($1.line);
parseContext.setLayoutQualifier($1.line, $$, *$1.string, $3.i);
}
| SHARED {
| SHARED { // because "shared" is both an identifier and a keyword
$$.init($1.line);
parseContext.setLayoutQualifier($1.line, $$, TString("shared"));
}
;
@ -1766,8 +1775,7 @@ storage_qualifier
if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "buffer"))
parseContext.recover();
$$.init($1.line);
$$.qualifier.storage = EvqUniform;
$$.qualifier.buffer = true;
$$.qualifier.storage = EvqUniform; // TODO: functionality: implement BUFFER
}
| SHARED {
$$.init($1.line);