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Moved lcd/gcd and strideAlign functions from bgfx to bx.

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This commit is contained in:
Branimir Karadžić 2015-04-12 17:31:33 -07:00
parent bce1a52c42
commit f203c872b1
1 changed files with 9 additions and 51 deletions
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60
src/bgfx_p.h
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@ -306,48 +306,6 @@ namespace bgfx
void release(const Memory* _mem);
const char* getAttribName(Attrib::Enum _attr);
inline uint32_t gcd(uint32_t _a, uint32_t _b)
{
do
{
uint32_t tmp = _a % _b;
_a = _b;
_b = tmp;
}
while (_b);
return _a;
}
inline uint32_t lcm(uint32_t _a, uint32_t _b)
{
return _a * (_b / gcd(_a, _b) );
}
inline uint32_t strideAlign(uint32_t _offset, uint32_t _stride)
{
using namespace bx;
const uint32_t mod = uint32_mod(_offset, _stride);
const uint32_t add = uint32_sub(_stride, mod);
const uint32_t mask = uint32_cmpeq(mod, 0);
const uint32_t tmp = uint32_selb(mask, 0, add);
const uint32_t result = uint32_add(_offset, tmp);
return result;
}
inline uint32_t strideAlign16(uint32_t _offset, uint32_t _stride)
{
uint32_t align = lcm(16, _stride);
return _offset+align-(_offset%align);
}
inline uint32_t strideAlign256(uint32_t _offset, uint32_t _stride)
{
uint32_t align = lcm(256, _stride);
return _offset+align-(_offset%align);
}
inline uint32_t castfu(float _value)
{
union { float fl; uint32_t ui; } un;
@ -1527,7 +1485,7 @@ namespace bgfx
bool checkAvailTransientVertexBuffer(uint32_t _num, uint16_t _stride)
{
uint32_t offset = strideAlign(m_vboffset, _stride);
uint32_t offset = bx::strideAlign(m_vboffset, _stride);
uint32_t vboffset = offset + _num * _stride;
vboffset = bx::uint32_min(vboffset, BGFX_CONFIG_TRANSIENT_VERTEX_BUFFER_SIZE);
uint32_t num = (vboffset-offset)/_stride;
@ -1536,7 +1494,7 @@ namespace bgfx
uint32_t allocTransientVertexBuffer(uint32_t& _num, uint16_t _stride)
{
uint32_t offset = strideAlign(m_vboffset, _stride);
uint32_t offset = bx::strideAlign(m_vboffset, _stride);
m_vboffset = offset + (_num+1) * _stride;
m_vboffset = bx::uint32_min(m_vboffset, BGFX_CONFIG_TRANSIENT_VERTEX_BUFFER_SIZE);
_num = (m_vboffset-offset)/_stride;
@ -2150,7 +2108,7 @@ namespace bgfx
dib.m_handle.idx = uint16_t(ptr>>32);
dib.m_offset = uint32_t(ptr);
dib.m_size = size;
dib.m_startIndex = strideAlign(dib.m_offset, indexSize)/indexSize;
dib.m_startIndex = bx::strideAlign(dib.m_offset, indexSize)/indexSize;
dib.m_flags = _flags;
return handle;
@ -2186,7 +2144,7 @@ namespace bgfx
dib.m_handle.idx = uint16_t(ptr>>32);
dib.m_offset = uint32_t(ptr);
dib.m_size = _mem->size;
dib.m_startIndex = strideAlign(dib.m_offset, indexSize)/indexSize;
dib.m_startIndex = bx::strideAlign(dib.m_offset, indexSize)/indexSize;
}
uint32_t offset = dib.m_startIndex*indexSize;
@ -2261,7 +2219,7 @@ namespace bgfx
BGFX_API_FUNC(DynamicVertexBufferHandle createDynamicVertexBuffer(uint32_t _num, const VertexDecl& _decl, uint8_t _flags) )
{
DynamicVertexBufferHandle handle = BGFX_INVALID_HANDLE;
uint32_t size = strideAlign16( (_num+1)*_decl.m_stride, _decl.m_stride);
uint32_t size = bx::strideAlign16( (_num+1)*_decl.m_stride, _decl.m_stride);
uint64_t ptr = 0;
if (0 != (_flags & BGFX_BUFFER_COMPUTE_WRITE) )
@ -2295,7 +2253,7 @@ namespace bgfx
dvb.m_handle.idx = uint16_t(ptr>>32);
dvb.m_offset = uint32_t(ptr);
dvb.m_size = size;
dvb.m_startVertex = strideAlign(dvb.m_offset, _decl.m_stride)/_decl.m_stride;
dvb.m_startVertex = bx::strideAlign(dvb.m_offset, _decl.m_stride)/_decl.m_stride;
dvb.m_numVertices = dvb.m_size/_decl.m_stride;
dvb.m_stride = _decl.m_stride;
dvb.m_decl = declHandle;
@ -2334,7 +2292,7 @@ namespace bgfx
dvb.m_handle.idx = uint16_t(ptr>>32);
dvb.m_offset = uint32_t(ptr);
dvb.m_size = _mem->size;
dvb.m_startVertex = strideAlign(dvb.m_offset, dvb.m_stride)/dvb.m_stride;
dvb.m_startVertex = bx::strideAlign(dvb.m_offset, dvb.m_stride)/dvb.m_stride;
}
uint32_t offset = dvb.m_startVertex*dvb.m_stride;
@ -2439,7 +2397,7 @@ namespace bgfx
_tib->data = &tib.data[offset];
_tib->size = _num * 2;
_tib->handle = tib.handle;
_tib->startIndex = strideAlign(offset, 2)/2;
_tib->startIndex = bx::strideAlign(offset, 2)/2;
}
TransientVertexBuffer* createTransientVertexBuffer(uint32_t _size, const VertexDecl* _decl = NULL)
@ -2508,7 +2466,7 @@ namespace bgfx
_tvb->data = &dvb.data[offset];
_tvb->size = _num * _decl.m_stride;
_tvb->startVertex = strideAlign(offset, _decl.m_stride)/_decl.m_stride;
_tvb->startVertex = bx::strideAlign(offset, _decl.m_stride)/_decl.m_stride;
_tvb->stride = _decl.m_stride;
_tvb->handle = dvb.handle;
_tvb->decl = declHandle;