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d3dx9_36: Implementation of D3DXSHDot.

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This commit is contained in:
Nozomi Kodama 2012-06-27 14:50:07 +08:00 committed by Alexandre Julliard
parent d0977a2b8b
commit b56227cbf1
4 changed files with 40 additions and 1 deletions
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2
dlls/d3dx9_36/d3dx9_36.spec
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@ -273,7 +273,7 @@
@ stub D3DXSaveVolumeToFileInMemory(ptr long ptr ptr ptr)
@ stub D3DXSaveVolumeToFileW(ptr long ptr ptr ptr)
@ stdcall D3DXSHAdd(ptr long ptr ptr)
@ stub D3DXSHDot(long ptr ptr)
@ stdcall D3DXSHDot(long ptr ptr)
@ stub D3DXSHEvalConeLight(long ptr long long long long ptr ptr ptr)
@ stub D3DXSHEvalDirection(ptr long ptr)
@ stub D3DXSHEvalDirectionalLight(long ptr long long long long ptr ptr ptr)

14
dlls/d3dx9_36/math.c
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@ -1981,6 +1981,20 @@ FLOAT* WINAPI D3DXSHAdd(FLOAT *out, UINT order, const FLOAT *a, const FLOAT *b)
return out;
}
FLOAT WINAPI D3DXSHDot(UINT order, CONST FLOAT *a, CONST FLOAT *b)
{
FLOAT s;
UINT i;
TRACE("order %u, a %p, b %p\n", order, a, b);
s = a[0] * b[0];
for (i = 1; i < order * order; i++)
s += a[i] * b[i];
return s;
}
FLOAT* WINAPI D3DXSHMultiply3(FLOAT *out, CONST FLOAT *a, CONST FLOAT *b)
{
FLOAT t, ta, tb;

24
dlls/d3dx9_36/tests/math.c
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@ -2399,6 +2399,29 @@ static void test_D3DXSHAdd(void)
}
}
static void test_D3DXSHDot(void)
{
unsigned int i;
FLOAT a[64], b[64], got;
CONST FLOAT expected[] =
{ 0.5f, 0.5f, 25.0f, 262.5f, 1428.0f, 5362.0f, 15873.0f, 39812.0f, 88400.0f, };
for (i = 0; i < 64; i++)
{
a[i] = (FLOAT)i + 1.0f;
b[i] = (FLOAT)i + 0.5f;
}
/* D3DXSHDot computes by using order * order elements */
for (i = 0; i < 9; i++)
{
got = D3DXSHDot(i, a, b);
ok(relative_error(got, expected[i]) < admitted_error, "order %d: expected %f, received %f\n", i, expected[i], got);
}
return;
}
static void test_D3DXSHMultiply3(void)
{
unsigned int i;
@ -2438,5 +2461,6 @@ START_TEST(math)
test_D3DXVec_Array();
test_D3DXFloat_Array();
test_D3DXSHAdd();
test_D3DXSHDot();
test_D3DXSHMultiply3();
}

1
include/d3dx9math.h
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@ -378,6 +378,7 @@ D3DXFLOAT16 *WINAPI D3DXFloat32To16Array(D3DXFLOAT16 *pout, CONST FLOAT *pin, UI
FLOAT *WINAPI D3DXFloat16To32Array(FLOAT *pout, CONST D3DXFLOAT16 *pin, UINT n);
FLOAT* WINAPI D3DXSHAdd(FLOAT *out, UINT order, CONST FLOAT *a, CONST FLOAT *b);
FLOAT WINAPI D3DXSHDot(UINT order, CONST FLOAT *a, CONST FLOAT *b);
FLOAT* WINAPI D3DXSHMultiply3(FLOAT *out, CONST FLOAT *a, CONST FLOAT *b);
#ifdef __cplusplus