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MSL: Fixup buffer array case issue on MSL 1.0.

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This commit is contained in:
Hans-Kristian Arntzen 2019-03-15 11:37:34 +01:00
parent af8a9ccdcb
commit 969566aff5
2 changed files with 15 additions and 10 deletions
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2
reference/shaders-msl/vert/resource-arrays-leaf.ios.vert
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@ -22,7 +22,7 @@ struct constant_block
#endif
constant int arraySize = SPIRV_CROSS_CONSTANT_ID_0;
void doWork(device storage_block* constant (&storage)[2], constant constant_block* constant (&constants)[4], thread const array<texture2d<int>, 3> images)
void doWork(device storage_block* (&storage)[2], constant constant_block* (&constants)[4], thread const array<texture2d<int>, 3> images)
{
storage[0]->baz = uint4(constants[3]->foo);
storage[1]->quux = images[2].read(uint2(int2(constants[1]->bar))).xy;

23
spirv_msl.cpp
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@ -5968,15 +5968,20 @@ string CompilerMSL::argument_decl(const SPIRFunction::Parameter &arg)
if (!address_space.empty())
decl = join(address_space, " ", decl);
// An awkward case where we need to emit *more* address space declarations (yay!).
// An example is where we pass down an array of buffer pointers to leaf functions.
// It's a constant array containing pointers to constants.
// The pointer array is always constant however. E.g.
// device SSBO * constant (&array)[N].
// const device SSBO * constant (&array)[N].
// constant SSBO * constant (&array)[N].
if (storage == StorageClassUniform || storage == StorageClassStorageBuffer)
decl += " constant";
if (msl_options.argument_buffers)
{
// An awkward case where we need to emit *more* address space declarations (yay!).
// An example is where we pass down an array of buffer pointers to leaf functions.
// It's a constant array containing pointers to constants.
// The pointer array is always constant however. E.g.
// device SSBO * constant (&array)[N].
// const device SSBO * constant (&array)[N].
// constant SSBO * constant (&array)[N].
// However, this only matters for argument buffers, since for MSL 1.0 style codegen,
// we emit the buffer array on stack instead, and that seems to work just fine apparently.
if (storage == StorageClassUniform || storage == StorageClassStorageBuffer)
decl += " constant";
}
decl += " (&";
decl += to_expression(name_id);