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Mesh::forEach and Mesh::map

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This commit is contained in:
Seth Alves 2017-03-18 10:18:04 -07:00
parent b3603ce8b3
commit 488ed081dd
3 changed files with 59 additions and 127 deletions
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47
libraries/model/src/model/Geometry.cpp
View file

@ -140,19 +140,11 @@ model::MeshPointer Mesh::map(std::function<glm::vec3(glm::vec3)> vertexFunc,
std::function<uint32_t(uint32_t)> indexFunc) {
int attributeTypeNormal = gpu::Stream::InputSlot::NORMAL; // libraries/gpu/src/gpu/Stream.h
// vertex data
gpu::Resource::Size vertexSize = getNumVertices() * sizeof(glm::vec3);
unsigned char* resultVertexData = new unsigned char[vertexSize];
unsigned char* vertexDataCursor = resultVertexData;
gpu::Resource::Size normalSize = getNumAttributes() * sizeof(glm::vec3);
unsigned char* resultNormalData = new unsigned char[normalSize];
unsigned char* normalDataCursor = resultNormalData;
gpu::Resource::Size indexSize = getNumIndices() * sizeof(uint32_t);
unsigned char* resultIndexData = new unsigned char[indexSize];
unsigned char* indexDataCursor = resultIndexData;
// vertex data
const gpu::BufferView& vertexBufferView = getVertexBuffer();
gpu::BufferView::Index numVertices = (gpu::BufferView::Index)getNumVertices();
for (gpu::BufferView::Index i = 0; i < numVertices; i ++) {
@ -162,6 +154,10 @@ model::MeshPointer Mesh::map(std::function<glm::vec3(glm::vec3)> vertexFunc,
}
// normal data
gpu::Resource::Size normalSize = getNumAttributes() * sizeof(glm::vec3);
unsigned char* resultNormalData = new unsigned char[normalSize];
unsigned char* normalDataCursor = resultNormalData;
const gpu::BufferView& normalsBufferView = getAttributeBuffer(attributeTypeNormal);
gpu::BufferView::Index numNormals = (gpu::BufferView::Index)getNumAttributes();
for (gpu::BufferView::Index i = 0; i < numNormals; i ++) {
@ -172,6 +168,10 @@ model::MeshPointer Mesh::map(std::function<glm::vec3(glm::vec3)> vertexFunc,
// TODO -- other attributes
// face data
gpu::Resource::Size indexSize = getNumIndices() * sizeof(uint32_t);
unsigned char* resultIndexData = new unsigned char[indexSize];
unsigned char* indexDataCursor = resultIndexData;
const gpu::BufferView& indexBufferView = getIndexBuffer();
gpu::BufferView::Index numIndexes = (gpu::BufferView::Index)getNumIndices();
for (gpu::BufferView::Index i = 0; i < numIndexes; i ++) {
@ -215,6 +215,35 @@ model::MeshPointer Mesh::map(std::function<glm::vec3(glm::vec3)> vertexFunc,
}
void Mesh::forEach(std::function<void(glm::vec3)> vertexFunc,
std::function<void(glm::vec3)> normalFunc,
std::function<void(uint32_t)> indexFunc) {
int attributeTypeNormal = gpu::Stream::InputSlot::NORMAL; // libraries/gpu/src/gpu/Stream.h
// vertex data
const gpu::BufferView& vertexBufferView = getVertexBuffer();
gpu::BufferView::Index numVertices = (gpu::BufferView::Index)getNumVertices();
for (gpu::BufferView::Index i = 0; i < numVertices; i ++) {
vertexFunc(vertexBufferView.get<glm::vec3>(i));
}
// normal data
const gpu::BufferView& normalsBufferView = getAttributeBuffer(attributeTypeNormal);
gpu::BufferView::Index numNormals = (gpu::BufferView::Index)getNumAttributes();
for (gpu::BufferView::Index i = 0; i < numNormals; i ++) {
normalFunc(normalsBufferView.get<glm::vec3>(i));
}
// TODO -- other attributes
// face data
const gpu::BufferView& indexBufferView = getIndexBuffer();
gpu::BufferView::Index numIndexes = (gpu::BufferView::Index)getNumIndices();
for (gpu::BufferView::Index i = 0; i < numIndexes; i ++) {
indexFunc(indexBufferView.get<uint32_t>(i));
}
}
Geometry::Geometry() {
}

4
libraries/model/src/model/Geometry.h
View file

@ -123,6 +123,10 @@ public:
std::function<glm::vec3(glm::vec3)> normalFunc,
std::function<uint32_t(uint32_t)> indexFunc);
void forEach(std::function<void(glm::vec3)> vertexFunc,
std::function<void(glm::vec3)> normalFunc,
std::function<void(uint32_t)> indexFunc);
protected:
gpu::Stream::FormatPointer _vertexFormat;

135
libraries/script-engine/src/ModelScriptingInterface.cpp
View file

@ -53,10 +53,8 @@ QString ModelScriptingInterface::meshToOBJ(MeshProxyList in) {
return writeOBJToString(meshes);
}
QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
int attributeTypeNormal = gpu::Stream::InputSlot::NORMAL; // libraries/gpu/src/gpu/Stream.h
// figure out the size of the resulting mesh
size_t totalVertexCount { 0 };
size_t totalAttributeCount { 0 };
size_t totalIndexCount { 0 };
@ -67,6 +65,7 @@ QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
totalIndexCount += mesh->getNumIndices();
}
// alloc the resulting mesh
gpu::Resource::Size combinedVertexSize = totalVertexCount * sizeof(glm::vec3);
unsigned char* combinedVertexData = new unsigned char[combinedVertexSize];
unsigned char* combinedVertexDataCursor = combinedVertexData;
@ -83,36 +82,22 @@ QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
foreach (const MeshProxy* meshProxy, in) {
MeshPointer mesh = meshProxy->getMeshPointer();
mesh->forEach(
[&](glm::vec3 position){
memcpy(combinedVertexDataCursor, &position, sizeof(position));
combinedVertexDataCursor += sizeof(position);
},
[&](glm::vec3 normal){
memcpy(combinedNormalDataCursor, &normal, sizeof(normal));
combinedNormalDataCursor += sizeof(normal);
},
[&](uint32_t index){
index += indexStartOffset;
memcpy(combinedIndexDataCursor, &index, sizeof(index));
combinedIndexDataCursor += sizeof(index);
});
// vertex data
const gpu::BufferView& vertexBufferView = mesh->getVertexBuffer();
gpu::BufferView::Index numVertices = (gpu::BufferView::Index)mesh->getNumVertices();
for (gpu::BufferView::Index i = 0; i < numVertices; i ++) {
glm::vec3 pos = vertexBufferView.get<glm::vec3>(i);
memcpy(combinedVertexDataCursor, &pos, sizeof(pos));
combinedVertexDataCursor += sizeof(pos);
}
// normal data
const gpu::BufferView& normalsBufferView = mesh->getAttributeBuffer(attributeTypeNormal);
gpu::BufferView::Index numNormals = (gpu::BufferView::Index)mesh->getNumAttributes();
for (gpu::BufferView::Index i = 0; i < numNormals; i ++) {
glm::vec3 normal = normalsBufferView.get<glm::vec3>(i);
memcpy(combinedNormalDataCursor, &normal, sizeof(normal));
combinedNormalDataCursor += sizeof(normal);
}
// TODO -- other attributes
// face data
const gpu::BufferView& indexBufferView = mesh->getIndexBuffer();
gpu::BufferView::Index numIndexes = (gpu::BufferView::Index)mesh->getNumIndices();
for (gpu::BufferView::Index i = 0; i < numIndexes; i ++) {
uint32_t index = indexBufferView.get<uint32_t>(i);
index += indexStartOffset;
memcpy(combinedIndexDataCursor, &index, sizeof(index));
combinedIndexDataCursor += sizeof(index);
}
indexStartOffset += numVertices;
}
@ -124,6 +109,7 @@ QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
gpu::BufferView combinedVertexBufferView(combinedVertexBufferPointer, vertexElement);
result->setVertexBuffer(combinedVertexBufferView);
int attributeTypeNormal = gpu::Stream::InputSlot::NORMAL; // libraries/gpu/src/gpu/Stream.h
gpu::Element normalElement = gpu::Element(gpu::VEC3, gpu::FLOAT, gpu::XYZ);
gpu::Buffer* combinedNormalsBuffer = new gpu::Buffer(combinedNormalSize, combinedNormalData);
gpu::BufferPointer combinedNormalsBufferPointer(combinedNormalsBuffer);
@ -136,7 +122,6 @@ QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
gpu::BufferView combinedIndexesBufferView(combinedIndexesBufferPointer, indexElement);
result->setIndexBuffer(combinedIndexesBufferView);
std::vector<model::Mesh::Part> parts;
parts.emplace_back(model::Mesh::Part((model::Index)0, // startIndex
(model::Index)result->getNumIndices(), // numIndices
@ -151,92 +136,6 @@ QScriptValue ModelScriptingInterface::appendMeshes(MeshProxyList in) {
}
// QScriptValue ModelScriptingInterface::transformMesh(glm::mat4 transform, MeshProxy* meshProxy) {
// int attributeTypeNormal = gpu::Stream::InputSlot::NORMAL; // libraries/gpu/src/gpu/Stream.h
// if (!meshProxy) {
// return QScriptValue(false);
// }
// MeshPointer mesh = meshProxy->getMeshPointer();
// gpu::Resource::Size vertexSize = mesh->getNumVertices() * sizeof(glm::vec3);
// unsigned char* resultVertexData = new unsigned char[vertexSize];
// unsigned char* vertexDataCursor = resultVertexData;
// gpu::Resource::Size normalSize = mesh->getNumAttributes() * sizeof(glm::vec3);
// unsigned char* resultNormalData = new unsigned char[normalSize];
// unsigned char* normalDataCursor = resultNormalData;
// gpu::Resource::Size indexSize = mesh->getNumIndices() * sizeof(uint32_t);
// unsigned char* resultIndexData = new unsigned char[indexSize];
// unsigned char* indexDataCursor = resultIndexData;
// // vertex data
// const gpu::BufferView& vertexBufferView = mesh->getVertexBuffer();
// gpu::BufferView::Index numVertices = (gpu::BufferView::Index)mesh->getNumVertices();
// for (gpu::BufferView::Index i = 0; i < numVertices; i ++) {
// glm::vec3 pos = vertexBufferView.get<glm::vec3>(i);
// pos = glm::vec3(transform * glm::vec4(pos, 1.0f));
// memcpy(vertexDataCursor, &pos, sizeof(pos));
// vertexDataCursor += sizeof(pos);
// }
// // normal data
// const gpu::BufferView& normalsBufferView = mesh->getAttributeBuffer(attributeTypeNormal);
// gpu::BufferView::Index numNormals = (gpu::BufferView::Index)mesh->getNumAttributes();
// for (gpu::BufferView::Index i = 0; i < numNormals; i ++) {
// glm::vec3 normal = normalsBufferView.get<glm::vec3>(i);
// normal = glm::vec3(transform * glm::vec4(normal, 0.0f));
// memcpy(normalDataCursor, &normal, sizeof(normal));
// normalDataCursor += sizeof(normal);
// }
// // TODO -- other attributes
// // face data
// const gpu::BufferView& indexBufferView = mesh->getIndexBuffer();
// gpu::BufferView::Index numIndexes = (gpu::BufferView::Index)mesh->getNumIndices();
// for (gpu::BufferView::Index i = 0; i < numIndexes; i ++) {
// uint32_t index = indexBufferView.get<uint32_t>(i);
// memcpy(indexDataCursor, &index, sizeof(index));
// indexDataCursor += sizeof(index);
// }
// model::MeshPointer result(new model::Mesh());
// gpu::Element vertexElement = gpu::Element(gpu::VEC3, gpu::FLOAT, gpu::XYZ);
// gpu::Buffer* resultVertexBuffer = new gpu::Buffer(vertexSize, resultVertexData);
// gpu::BufferPointer resultVertexBufferPointer(resultVertexBuffer);
// gpu::BufferView resultVertexBufferView(resultVertexBufferPointer, vertexElement);
// result->setVertexBuffer(resultVertexBufferView);
// gpu::Element normalElement = gpu::Element(gpu::VEC3, gpu::FLOAT, gpu::XYZ);
// gpu::Buffer* resultNormalsBuffer = new gpu::Buffer(normalSize, resultNormalData);
// gpu::BufferPointer resultNormalsBufferPointer(resultNormalsBuffer);
// gpu::BufferView resultNormalsBufferView(resultNormalsBufferPointer, normalElement);
// result->addAttribute(attributeTypeNormal, resultNormalsBufferView);
// gpu::Element indexElement = gpu::Element(gpu::SCALAR, gpu::UINT32, gpu::RAW);
// gpu::Buffer* resultIndexesBuffer = new gpu::Buffer(indexSize, resultIndexData);
// gpu::BufferPointer resultIndexesBufferPointer(resultIndexesBuffer);
// gpu::BufferView resultIndexesBufferView(resultIndexesBufferPointer, indexElement);
// result->setIndexBuffer(resultIndexesBufferView);
// std::vector<model::Mesh::Part> parts;
// parts.emplace_back(model::Mesh::Part((model::Index)0, // startIndex
// (model::Index)result->getNumIndices(), // numIndices
// (model::Index)0, // baseVertex
// model::Mesh::TRIANGLES)); // topology
// result->setPartBuffer(gpu::BufferView(new gpu::Buffer(parts.size() * sizeof(model::Mesh::Part),
// (gpu::Byte*) parts.data()), gpu::Element::PART_DRAWCALL));
// MeshProxy* resultProxy = new MeshProxy(result);
// return meshToScriptValue(_modelScriptEngine, resultProxy);
// }
QScriptValue ModelScriptingInterface::transformMesh(glm::mat4 transform, MeshProxy* meshProxy) {
if (!meshProxy) {