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Starting on materials attributes, fixed bug with Hermite deltas.

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This commit is contained in:
Andrzej Kapolka 2014-09-03 14:09:04 -07:00
parent 33faffd9d4
commit 0bd800faf2
3 changed files with 30 additions and 3 deletions
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27
interface/src/MetavoxelSystem.cpp
View file

@ -1828,6 +1828,10 @@ int VoxelAugmentVisitor::visit(MetavoxelInfo& info) {
}
glm::vec3 center;
glm::vec3 normal;
const int MAX_MATERIALS_PER_VERTEX = 4;
quint8 materials[4];
glm::vec4 materialWeights;
float totalWeight = 0.0f;
int red = 0, green = 0, blue = 0;
for (int i = 0; i < crossingCount; i++) {
const EdgeCrossing& crossing = crossings[i];
@ -1836,13 +1840,34 @@ int VoxelAugmentVisitor::visit(MetavoxelInfo& info) {
red += qRed(crossing.color);
green += qGreen(crossing.color);
blue += qBlue(crossing.color);
if (crossing.material != 0) {
for (int j = 0; j < MAX_MATERIALS_PER_VERTEX; j++) {
if (materials[j] == crossing.material) {
materialWeights[j] += 1.0f;
totalWeight += 1.0f;
break;
} else if (materials[j] == 0.0f) {
materials[j] = crossing.material;
materialWeights[j] = 1.0f;
totalWeight += 1.0f;
break;
}
}
}
}
normal = glm::normalize(normal);
center /= crossingCount;
if (totalWeight > 0.0f) {
materialWeights *= (EIGHT_BIT_MAXIMUM / totalWeight);
}
VoxelPoint point = { info.minimum + (glm::vec3(clampedX, clampedY, clampedZ) +
center * EIGHT_BIT_MAXIMUM_RECIPROCAL) * scale,
{ (quint8)(red / crossingCount), (quint8)(green / crossingCount), (quint8)(blue / crossingCount) },
{ (char)(normal.x * 127.0f), (char)(normal.y * 127.0f), (char)(normal.z * 127.0f) } };
{ (char)(normal.x * 127.0f), (char)(normal.y * 127.0f), (char)(normal.z * 127.0f) },
{ materials[0], materials[1], materials[2], materials[3] },
{ (quint8)materialWeights[0], (quint8)materialWeights[1], (quint8)materialWeights[2],
(quint8)materialWeights[3] } };
int index = vertices.size();
vertices.append(point);

2
interface/src/MetavoxelSystem.h
View file

@ -220,6 +220,8 @@ public:
glm::vec3 vertex;
quint8 color[3];
char normal[3];
quint8 materials[4];
quint8 materialWeights[4];
};
/// Contains the information necessary to render a voxel block.

4
libraries/metavoxels/src/AttributeRegistry.cpp
View file

@ -1907,8 +1907,8 @@ void VoxelHermiteData::writeDelta(Bitstream& out, const VoxelHermiteDataPointer&
bool differenceZ = false;
for (int y = 0; y < _size; y++) {
bool differenceY = false;
for (int x = 0; x < _size; x++) {
if (*src++ != *ref++ || *src++ != *ref++ || *src++ != *ref++) {
for (int x = 0; x < _size; x++, src += EDGE_COUNT, ref += EDGE_COUNT) {
if (src[0] != ref[0] || src[1] != ref[1] || src[2] != ref[2]) {
minX = qMin(minX, x);
maxX = qMax(maxX, x);
differenceY = differenceZ = true;