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| |
| #ifndef QT3DRENDER_RENDER_BUFFERVISITOR_P_H |
| #define QT3DRENDER_RENDER_BUFFERVISITOR_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of other Qt classes. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <Qt3DCore/qnodeid.h> |
| #include <Qt3DRender/QAttribute> |
| #include <Qt3DRender/private/trianglesvisitor_p.h> |
| #include <Qt3DRender/private/attribute_p.h> |
| #include <Qt3DRender/private/buffer_p.h> |
| #include <Qt3DRender/private/bufferutils_p.h> |
| #include <Qt3DRender/private/geometryrenderer_p.h> |
| #include <Qt3DRender/private/geometry_p.h> |
| #include <Qt3DRender/private/managers_p.h> |
| #include <Qt3DRender/private/nodemanagers_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DCore { |
| class QEntity; |
| } |
| |
| namespace Qt3DRender { |
| namespace Render { |
| |
| |
| template <typename ValueType, QAttribute::VertexBaseType VertexBaseType, uint dataSize> |
| class Q_AUTOTEST_EXPORT BufferVisitor |
| { |
| public: |
| explicit BufferVisitor(NodeManagers *manager) |
| : m_manager(manager) |
| { |
| } |
| virtual ~BufferVisitor() { } |
| |
| virtual void visit(uint ndx, ValueType x) { |
| Q_UNUSED(ndx); Q_UNUSED(x); |
| } |
| virtual void visit(uint ndx, ValueType x, ValueType y) { |
| Q_UNUSED(ndx); Q_UNUSED(x); Q_UNUSED(y); |
| } |
| virtual void visit(uint ndx, ValueType x, ValueType y, ValueType z) { |
| Q_UNUSED(ndx); Q_UNUSED(x); Q_UNUSED(y); Q_UNUSED(z); |
| } |
| virtual void visit(uint ndx, ValueType x, ValueType y, ValueType z, ValueType w) { |
| Q_UNUSED(ndx); Q_UNUSED(x); Q_UNUSED(y); Q_UNUSED(z); Q_UNUSED(w); |
| } |
| |
| template<typename VertexBufferType, typename IndexBufferType> |
| void traverseCoordinateIndexed(VertexBufferType *vertexBuffer, |
| IndexBufferType *indexBuffer, |
| int vertexByteStride, |
| int drawVertexCount, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| switch (dataSize) { |
| case 1: traverseCoordinates1Indexed(vertexBuffer, vertexByteStride, indexBuffer, drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| case 2: traverseCoordinates2Indexed(vertexBuffer, vertexByteStride, indexBuffer, drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| case 3: traverseCoordinates3Indexed(vertexBuffer, vertexByteStride, indexBuffer, drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| case 4: traverseCoordinates4Indexed(vertexBuffer, vertexByteStride, indexBuffer, drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| default: Q_UNREACHABLE(); |
| } |
| } |
| |
| bool apply(Qt3DRender::Render::Attribute *attribute, |
| Qt3DRender::Render::Attribute *indexAttribute, |
| int drawVertexCount, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| if (attribute->vertexBaseType() != VertexBaseType) |
| return false; |
| if (attribute->vertexSize() < dataSize) |
| return false; |
| |
| auto data = m_manager->lookupResource<Buffer, BufferManager>(attribute->bufferId())->data(); |
| auto vertexBuffer = BufferTypeInfo::castToType<VertexBaseType>(data, attribute->byteOffset()); |
| |
| if (indexAttribute) { |
| auto indexData = m_manager->lookupResource<Buffer, BufferManager>(indexAttribute->bufferId())->data(); |
| switch (indexAttribute->vertexBaseType()) { |
| case QAttribute::UnsignedShort: { |
| auto indexBuffer = BufferTypeInfo::castToType<QAttribute::UnsignedShort>(indexData, indexAttribute->byteOffset()); |
| traverseCoordinateIndexed(vertexBuffer, indexBuffer, attribute->byteStride(), drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| } |
| case QAttribute::UnsignedInt: { |
| auto indexBuffer = BufferTypeInfo::castToType<QAttribute::UnsignedInt>(indexData, indexAttribute->byteOffset()); |
| traverseCoordinateIndexed(vertexBuffer, indexBuffer, attribute->byteStride(), drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| } |
| case QAttribute::UnsignedByte: { |
| auto indexBuffer = BufferTypeInfo::castToType<QAttribute::UnsignedByte>(indexData, indexAttribute->byteOffset()); |
| traverseCoordinateIndexed(vertexBuffer, indexBuffer, attribute->byteStride(), drawVertexCount, |
| primitiveRestartEnabled, primitiveRestartIndex); |
| break; |
| } |
| default: Q_UNREACHABLE(); |
| } |
| } else { |
| switch (dataSize) { |
| case 1: traverseCoordinates1(vertexBuffer, attribute->byteStride(), drawVertexCount); break; |
| case 2: traverseCoordinates2(vertexBuffer, attribute->byteStride(), drawVertexCount); break; |
| case 3: traverseCoordinates3(vertexBuffer, attribute->byteStride(), drawVertexCount); break; |
| case 4: traverseCoordinates4(vertexBuffer, attribute->byteStride(), drawVertexCount); break; |
| default: Q_UNREACHABLE(); |
| } |
| } |
| |
| return true; |
| } |
| |
| protected: |
| |
| template <typename Coordinate> |
| void traverseCoordinates1(Coordinate *coordinates, |
| const uint byteStride, |
| const uint count) |
| { |
| const uint stride = byteStride / sizeof(Coordinate); |
| for (uint ndx = 0; ndx < count; ++ndx) { |
| visit(ndx, coordinates[0]); |
| coordinates += stride; |
| } |
| } |
| |
| template <typename Coordinate, typename IndexElem> |
| void traverseCoordinates1Indexed(Coordinate *coordinates, |
| const uint byteStride, |
| IndexElem *indices, |
| const uint count, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| const uint stride = byteStride / sizeof(Coordinate); |
| for (uint i = 0; i < count; ++i) { |
| if (!primitiveRestartEnabled || (int) indices[i] != primitiveRestartIndex) { |
| const uint n = stride * indices[i]; |
| visit(i, coordinates[n]); |
| } |
| } |
| } |
| |
| template <typename Coordinate> |
| void traverseCoordinates2(Coordinate *coordinates, |
| const uint byteStride, |
| const uint count) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 2; |
| for (uint ndx = 0; ndx < count; ++ndx) { |
| visit(ndx, coordinates[0], coordinates[1]); |
| coordinates += stride; |
| } |
| } |
| |
| |
| template <typename Coordinate, typename IndexElem> |
| void traverseCoordinates2Indexed(Coordinate *coordinates, |
| const uint byteStride, |
| IndexElem *indices, |
| const uint count, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 2; |
| for (uint i = 0; i < count; ++i) { |
| if (!primitiveRestartEnabled || (int) indices[i] != primitiveRestartIndex) { |
| const uint n = stride * indices[i]; |
| visit(i, coordinates[n], coordinates[n + 1]); |
| } |
| } |
| } |
| |
| template <typename Coordinate> |
| void traverseCoordinates3(Coordinate *coordinates, |
| const uint byteStride, |
| const uint count) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 3; |
| for (uint ndx = 0; ndx < count; ++ndx) { |
| visit(ndx, coordinates[0], coordinates[1], coordinates[2]); |
| coordinates += stride; |
| } |
| } |
| |
| template <typename Coordinate, typename IndexElem> |
| void traverseCoordinates3Indexed(Coordinate *coordinates, |
| const uint byteStride, |
| IndexElem *indices, |
| const uint count, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 3; |
| for (uint i = 0; i < count; ++i) { |
| if (!primitiveRestartEnabled || (int) indices[i] != primitiveRestartIndex) { |
| const uint n = stride * indices[i]; |
| visit(i, coordinates[n], coordinates[n + 1], coordinates[n + 2]); |
| } |
| } |
| } |
| |
| template <typename Coordinate> |
| void traverseCoordinates4(Coordinate *coordinates, |
| const uint byteStride, |
| const uint count) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 4; |
| for (uint ndx = 0; ndx < count; ++ndx) { |
| visit(ndx, coordinates[0], coordinates[1], coordinates[2], coordinates[3]); |
| coordinates += stride; |
| } |
| } |
| |
| template <typename Coordinate, typename IndexElem> |
| void traverseCoordinates4Indexed(Coordinate *coordinates, |
| const uint byteStride, |
| IndexElem *indices, |
| const uint count, |
| bool primitiveRestartEnabled, |
| int primitiveRestartIndex) |
| { |
| const uint stride = byteStride ? byteStride / sizeof(Coordinate) : 4; |
| for (uint i = 0; i < count; ++i) { |
| if (!primitiveRestartEnabled || (int) indices[i] != primitiveRestartIndex) { |
| const uint n = stride * indices[i]; |
| visit(i, coordinates[n], coordinates[n + 1], coordinates[n + 2], coordinates[n + 3]); |
| } |
| } |
| } |
| |
| NodeManagers *m_manager; |
| }; |
| |
| typedef BufferVisitor<float, QAttribute::Float, 3> Buffer3fVisitor; |
| |
| } // namespace Render |
| |
| } // namespace Qt3DRender |
| |
| QT_END_NAMESPACE |
| |
| |
| #endif // QT3DRENDER_RENDER_BUFFERVISITOR_P_H |
