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Mtl implementation fixed mtlViewer fractional tess

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Fixed mtlViewer to be more consistent with the other
example viewers and allow screen space tessellation
to be enabled independently from fractional tessellation.
This commit is contained in:
David G Yu 2019-05-25 19:42:27 -07:00
parent 232d50c231
commit 4d84b6ff9b
2 changed files with 12 additions and 7 deletions
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3
examples/mtlViewer/mtlViewer.metal
View File

@ -40,9 +40,6 @@ constant constexpr unsigned IndexLookupStride = 1;
static_assert(REAL_THREADGROUP_DIVISOR % 2 == 0, "REAL_THREADGROUP_DIVISOR must be a power of 2");
static_assert(!OSD_ENABLE_SCREENSPACE_TESSELLATION || !USE_PTVS_FACTORS, "USE_PTVS_FACTORS cannot be enabled if OSD_ENABLE_SCREENSPACE_TESSELLATION is enabled");
static_assert((OSD_ENABLE_SCREENSPACE_TESSELLATION && (OSD_FRACTIONAL_ODD_SPACING || OSD_FRACTIONAL_EVEN_SPACING)) || !OSD_ENABLE_SCREENSPACE_TESSELLATION, "OSD_ENABLE_SCREENSPACE_TESSELLATION requires OSD_FRACTIONAL_ODD_SPACING or OSD_FRACTIONAL_EVEN_SPACING");
#endif
#define SHADING_TYPE_MATERIAL 0

16
examples/mtlViewer/mtlViewer.mm
View File

@ -1030,10 +1030,18 @@ using PerFrameBuffer = MTLRingBuffer<DataType, FRAME_LAG>;
DEFINE(OSD_PATCH_INDEX_BUFFER_INDEX,OSD_PATCH_INDEX_BUFFER_INDEX);
DEFINE(OSD_DRAWINDIRECT_BUFFER_INDEX,OSD_DRAWINDIRECT_BUFFER_INDEX);
DEFINE(OSD_KERNELLIMIT_BUFFER_INDEX,OSD_KERNELLIMIT_BUFFER_INDEX);
DEFINE(OSD_PATCH_ENABLE_SINGLE_CREASE, allowsSingleCrease && _useSingleCreasePatch);
auto partitionMode = _useFractionalTessellation ? MTLTessellationPartitionModeFractionalOdd : MTLTessellationPartitionModePow2;
DEFINE(OSD_FRACTIONAL_EVEN_SPACING, partitionMode == MTLTessellationPartitionModeFractionalEven);
DEFINE(OSD_FRACTIONAL_ODD_SPACING, partitionMode == MTLTessellationPartitionModeFractionalOdd);
auto partitionMode = _useScreenspaceTessellation && _useFractionalTessellation
? MTLTessellationPartitionModeFractionalOdd
: MTLTessellationPartitionModeInteger;
if (partitionMode == MTLTessellationPartitionModeFractionalOdd) {
DEFINE(OSD_FRACTIONAL_ODD_SPACING, 1);
} else if (partitionMode == MTLTessellationPartitionModeFractionalEven) {
DEFINE(OSD_FRACTIONAL_EVEN_SPACING, 1);
}
#if TARGET_OS_EMBEDDED
DEFINE(OSD_MAX_TESS_LEVEL, 16);
#else
@ -1050,7 +1058,7 @@ using PerFrameBuffer = MTLRingBuffer<DataType, FRAME_LAG>;
DEFINE(OSD_ENABLE_BACKPATCH_CULL, _usePatchBackfaceCulling);
DEFINE(SHADING_TYPE, _shadingMode);
DEFINE(OSD_USE_PATCH_INDEX_BUFFER, _usePatchIndexBuffer);
DEFINE(OSD_ENABLE_SCREENSPACE_TESSELLATION, _useScreenspaceTessellation && _useFractionalTessellation);
DEFINE(OSD_ENABLE_SCREENSPACE_TESSELLATION, _useScreenspaceTessellation);
DEFINE(OSD_ENABLE_PATCH_CULL, _usePatchClipCulling && _doAdaptive);
DEFINE(OSD_FVAR_DATA_BUFFER_INDEX, OSD_FVAR_DATA_BUFFER_INDEX);
DEFINE(OSD_FVAR_INDICES_BUFFER_INDEX, OSD_FVAR_INDICES_BUFFER_INDEX);