address uint32_t instead of uint16_t

Erfan-Ahmadi · Erfan-Ahmadi · commit e93fdee0a52a · 2021-10-22T19:54:02.000+03:30
diff --git a/include/nbl/builtin/glsl/virtual_geometry/descriptors.glsl b/include/nbl/builtin/glsl/virtual_geometry/descriptors.glsl
@@ -106,11 +106,14 @@ layout(set = _NBL_VG_SSBO_DESCRIPTOR_SET, binding = _NBL_VG_SSBO_UVEC4_BINDING,
 #ifdef _NBL_VG_USE_SSBO_INDEX
 layout(set = _NBL_VG_SSBO_DESCRIPTOR_SET, binding = _NBL_VG_SSBO_INDEX_BINDING, std430) readonly buffer TrianglePackedData
 {
-    uint16_t indices[];
+    uint indices[];
 } trianglePackedData;
 uint nbl_glsl_VG_fetchTriangleVertexIndex(in uint baseVertex, in uint triangleVx)
 {
-    return uint(trianglePackedData.indices[baseVertex+triangleVx]);
+    uint realIndex = baseVertex + triangleVx;
+    uint packedData = trianglePackedData.indices[realIndex>>1u];
+    uint extractedData = uint(bitfieldExtract(packedData, bool(realIndex&0x1u) ? 16 : 0, 16));
+    return extractedData;
 }
 #endif
 

Original file line number	Diff line number	Diff line change
`@@ -106,11 +106,14 @@ layout(set = _NBL_VG_SSBO_DESCRIPTOR_SET, binding = _NBL_VG_SSBO_UVEC4_BINDING,`
`106`	`106`	`#ifdef _NBL_VG_USE_SSBO_INDEX`
`107`	`107`	`layout(set = _NBL_VG_SSBO_DESCRIPTOR_SET, binding = _NBL_VG_SSBO_INDEX_BINDING, std430) readonly buffer TrianglePackedData`
`108`	`108`	`{`
`109`		`- uint16_t indices[];`
	`109`	`+ uint indices[];`
`110`	`110`	`} trianglePackedData;`
`111`	`111`	`uint nbl_glsl_VG_fetchTriangleVertexIndex(in uint baseVertex, in uint triangleVx)`
`112`	`112`	`{`
`113`		`- return uint(trianglePackedData.indices[baseVertex+triangleVx]);`
	`113`	`+ uint realIndex = baseVertex + triangleVx;`
	`114`	`+ uint packedData = trianglePackedData.indices[realIndex>>1u];`
	`115`	`+ uint extractedData = uint(bitfieldExtract(packedData, bool(realIndex&0x1u) ? 16 : 0, 16));`
	`116`	`+ return extractedData;`
`114`	`117`	`}`
`115`	`118`	`#endif`
`116`	`119`