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[spline/bezier]minor fix

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xebra 2018-01-31 20:25:07 +09:00
parent 1b9af84270
commit 0c9680446e
1 changed files with 32 additions and 32 deletions
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64
GPU/Common/SplineCommon.cpp
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@ -109,6 +109,38 @@ struct KnotDiv {
float _3_2 = 1.0f; // Always 1
};
// knot should be an array sized n + 5 (n + 1 + 1 + degree (cubic))
static void spline_knot(int n, int type, float *knots, KnotDiv *divs) {
// Basic theory (-2 to +3), optimized with KnotDiv (-2 to +0)
// for (int i = 0; i < n + 5; ++i) {
for (int i = 0; i < n + 2; ++i) {
knots[i] = (float)i - 2;
}
// The first edge is open
if ((type & 1) != 0) {
knots[0] = 0;
knots[1] = 0;
divs[0]._3_0 = 1.0f;
divs[0]._4_1 = 1.0f / 2.0f;
divs[0]._3_1 = 1.0f;
if (n > 1)
divs[1]._3_0 = 1.0f / 2.0f;
}
// The last edge is open
if ((type & 2) != 0) {
// knots[n + 2] = (float)n; // Got rid of this line optimized with KnotDiv
// knots[n + 3] = (float)n; // Got rid of this line optimized with KnotDiv
// knots[n + 4] = (float)n; // Got rid of this line optimized with KnotDiv
divs[n - 1]._4_1 = 1.0f / 2.0f;
divs[n - 1]._5_2 = 1.0f;
divs[n - 1]._4_2 = 1.0f;
if (n > 1)
divs[n - 2]._5_2 = 1.0f / 2.0f;
}
}
static void spline_n_4(float t, float *knot, const KnotDiv &div, float *splineVal, float *derivs) {
#ifdef _M_SSE
const __m128 knot012 = _mm_loadu_ps(knot);
@ -173,38 +205,6 @@ static void spline_n_4(float t, float *knot, const KnotDiv &div, float *splineVa
derivs[3] = 3 * (f352 - 0);
}
// knot should be an array sized n + 5 (n + 1 + 1 + degree (cubic))
static void spline_knot(int n, int type, float *knots, KnotDiv *divs) {
// Basic theory (-2 to +3), optimized with KnotDiv (-2 to +0)
// for (int i = 0; i < n + 5; ++i) {
for (int i = 0; i < n + 2; ++i) {
knots[i] = (float)i - 2;
}
// The first edge is open
if ((type & 1) != 0) {
knots[0] = 0;
knots[1] = 0;
divs[0]._3_0 = 1.0f;
divs[0]._4_1 = 1.0f / 2.0f;
divs[0]._3_1 = 1.0f;
if (n > 1)
divs[1]._3_0 = 1.0f / 2.0f;
}
// The last edge is open
if ((type & 2) != 0) {
// knots[n + 2] = (float)n; // Got rid of this line optimized with KnotDiv
// knots[n + 3] = (float)n; // Got rid of this line optimized with KnotDiv
// knots[n + 4] = (float)n; // Got rid of this line optimized with KnotDiv
divs[n - 1]._4_1 = 1.0f / 2.0f;
divs[n - 1]._5_2 = 1.0f;
divs[n - 1]._4_2 = 1.0f;
if (n > 1)
divs[n - 2]._5_2 = 1.0f / 2.0f;
}
}
bool CanUseHardwareTessellation(GEPatchPrimType prim) {
if (g_Config.bHardwareTessellation && !g_Config.bSoftwareRendering) {
return CanUseHardwareTransform(PatchPrimToPrim(prim));