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SPV 1.4: Emit SignExtend and ZeroExtend for integer image reads/writes.

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This commit is contained in:
John Kessenich 2019-03-31 10:51:57 -06:00
parent 61a5ce190a
commit f43c739ac5
11 changed files with 766 additions and 20 deletions
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7
SPIRV/SpvBuilder.cpp
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@ -1808,7 +1808,7 @@ Id Builder::createBuiltinCall(Id resultType, Id builtins, int entryPoint, const
// Accept all parameters needed to create a texture instruction.
// Create the correct instruction based on the inputs, and make the call.
Id Builder::createTextureCall(Decoration precision, Id resultType, bool sparse, bool fetch, bool proj, bool gather,
bool noImplicitLod, const TextureParameters& parameters)
bool noImplicitLod, const TextureParameters& parameters, ImageOperandsMask signExtensionMask)
{
static const int maxTextureArgs = 10;
Id texArgs[maxTextureArgs] = {};
@ -1835,8 +1835,8 @@ Id Builder::createTextureCall(Decoration precision, Id resultType, bool sparse,
//
// Set up the optional arguments
//
int optArgNum = numArgs; // track which operand, if it exists, is the mask of optional arguments
++numArgs; // speculatively make room for the mask operand
int optArgNum = numArgs; // track which operand, if it exists, is the mask of optional arguments
++numArgs; // speculatively make room for the mask operand
ImageOperandsMask mask = ImageOperandsMaskNone; // the mask operand
if (parameters.bias) {
mask = (ImageOperandsMask)(mask | ImageOperandsBiasMask);
@ -1889,6 +1889,7 @@ Id Builder::createTextureCall(Decoration precision, Id resultType, bool sparse,
if (parameters.volatil) {
mask = mask | ImageOperandsVolatileTexelKHRMask;
}
mask = mask | signExtensionMask;
if (mask == ImageOperandsMaskNone)
--numArgs; // undo speculative reservation for the mask argument
else