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Tweaks to heightfield conversion.

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This commit is contained in:
Andrzej Kapolka 2014-10-22 18:22:21 -07:00
parent 9af1516c79
commit 631419d23c
2 changed files with 35 additions and 21 deletions
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13
interface/resources/shaders/metavoxel_heightfield_base.vert
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@ -26,11 +26,14 @@ varying vec4 normal;
void main(void) {
// transform and store the normal for interpolation
vec2 heightCoord = gl_MultiTexCoord0.st;
float deltaX = texture2D(heightMap, heightCoord - vec2(heightScale, 0.0)).r -
texture2D(heightMap, heightCoord + vec2(heightScale, 0.0)).r;
float deltaZ = texture2D(heightMap, heightCoord - vec2(0.0, heightScale)).r -
texture2D(heightMap, heightCoord + vec2(0.0, heightScale)).r;
normal = normalize(gl_ModelViewMatrix * vec4(deltaX, heightScale, deltaZ, 0.0));
vec4 neighborHeights = vec4(texture2D(heightMap, heightCoord - vec2(heightScale, 0.0)).r,
texture2D(heightMap, heightCoord + vec2(heightScale, 0.0)).r,
texture2D(heightMap, heightCoord - vec2(0.0, heightScale)).r,
texture2D(heightMap, heightCoord + vec2(0.0, heightScale)).r);
vec4 neighborsZero = step(1.0 / 255.0, neighborHeights);
normal = normalize(gl_ModelViewMatrix * vec4(
(neighborHeights.x - neighborHeights.y) * neighborsZero.x * neighborsZero.y, heightScale,
(neighborHeights.z - neighborHeights.w) * neighborsZero.z * neighborsZero.w, 0.0));
// add the height to the position
float height = texture2D(heightMap, heightCoord).r;

43
libraries/metavoxels/src/MetavoxelMessages.cpp
View file

@ -1062,6 +1062,13 @@ int HeightfieldClearFetchVisitor::visit(MetavoxelInfo& info) {
HeightfieldHeightDataPointer newHeightPointer(new HeightfieldHeightData(contents));
info.outputValues[0] = AttributeValue(_outputs.at(0), encodeInline<HeightfieldHeightDataPointer>(newHeightPointer));
// allow a border for what we clear in terms of color/material
innerBounds.minimum.x += increment;
innerBounds.minimum.z += increment;
innerBounds.maximum.x -= increment;
innerBounds.maximum.z -= increment;
innerOverlap = bounds.getIntersection(innerBounds);
HeightfieldColorDataPointer colorPointer = info.inputValues.at(1).getInlineValue<HeightfieldColorDataPointer>();
if (colorPointer) {
contents = colorPointer->getContents();
@ -1087,14 +1094,16 @@ int HeightfieldClearFetchVisitor::visit(MetavoxelInfo& info) {
destY = (innerOverlap.minimum.z - info.minimum.z) * heightScale;
destWidth = glm::ceil((innerOverlap.maximum.x - innerOverlap.minimum.x) * heightScale);
destHeight = glm::ceil((innerOverlap.maximum.z - innerOverlap.minimum.z) * heightScale);
dest = contents.data() + (destY * size + destX) * DataBlock::COLOR_BYTES;
for (int y = 0; y < destHeight; y++, dest += size * DataBlock::COLOR_BYTES) {
memset(dest, 0, destWidth * DataBlock::COLOR_BYTES);
if (destWidth > 0 && destHeight > 0) {
dest = contents.data() + (destY * size + destX) * DataBlock::COLOR_BYTES;
for (int y = 0; y < destHeight; y++, dest += size * DataBlock::COLOR_BYTES) {
memset(dest, 0, destWidth * DataBlock::COLOR_BYTES);
}
HeightfieldColorDataPointer newColorPointer(new HeightfieldColorData(contents));
info.outputValues[1] = AttributeValue(_outputs.at(1), encodeInline<HeightfieldColorDataPointer>(newColorPointer));
}
HeightfieldColorDataPointer newColorPointer(new HeightfieldColorData(contents));
info.outputValues[1] = AttributeValue(_outputs.at(1), encodeInline<HeightfieldColorDataPointer>(newColorPointer));
}
HeightfieldMaterialDataPointer materialPointer = info.inputValues.at(2).getInlineValue<HeightfieldMaterialDataPointer>();
@ -1134,16 +1143,18 @@ int HeightfieldClearFetchVisitor::visit(MetavoxelInfo& info) {
destY = (innerOverlap.minimum.z - info.minimum.z) * heightScale;
destWidth = glm::ceil((innerOverlap.maximum.x - innerOverlap.minimum.x) * heightScale);
destHeight = glm::ceil((innerOverlap.maximum.z - innerOverlap.minimum.z) * heightScale);
dest = (uchar*)contents.data() + destY * size + destX;
for (int y = 0; y < destHeight; y++, dest += size) {
memset(dest, 0, destWidth);
if (destWidth > 0 && destHeight > 0) {
dest = (uchar*)contents.data() + destY * size + destX;
for (int y = 0; y < destHeight; y++, dest += size) {
memset(dest, 0, destWidth);
}
clearUnusedMaterials(materials, contents);
HeightfieldMaterialDataPointer newMaterialPointer(new HeightfieldMaterialData(contents, materials));
info.outputValues[2] = AttributeValue(_outputs.at(2),
encodeInline<HeightfieldMaterialDataPointer>(newMaterialPointer));
}
clearUnusedMaterials(materials, contents);
HeightfieldMaterialDataPointer newMaterialPointer(new HeightfieldMaterialData(contents, materials));
info.outputValues[2] = AttributeValue(_outputs.at(2),
encodeInline<HeightfieldMaterialDataPointer>(newMaterialPointer));
}
return STOP_RECURSION;