#include <QDebug>
-#include <GL/gl.h>
+#include <qmath.h>
static int
-sizeForType(int glType)
-{
- switch(glType) {
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_INT:
- return sizeof(GLint);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
+sizeForType(int type)
+{
+ switch(type) {
+ case DT_INT8:
+ case DT_UINT8:
+ return 1;
+ case DT_INT16:
+ case DT_UINT16:
+ return 2;
+ case DT_INT32:
+ case DT_UINT32:
+ return 4;
+ case DT_FLOAT:
+ return sizeof(float);
+ case DT_DOUBLE:
+ return sizeof(double);
default:
- return sizeof(GLint);
+ return sizeof(int);
}
}
convertData(const QByteArray &dataArray,
int type,
int stride,
- int numComponents)
+ int numComponents,
+ int startingOffset)
{
QStringList strings;
- const char *data = dataArray.constData();
+ int dataSize = dataArray.size() - startingOffset;
+ const char *data = dataArray.constData() + startingOffset;
int typeSize = sizeForType(type);
- int sizePerAttribute = typeSize;
+ int elementSize = numComponents * typeSize;
+
+ if (!stride)
+ stride = elementSize;
- if (stride)
- sizePerAttribute = stride;
+ int numElements = dataSize / stride;
- int numElements = dataArray.size() / sizePerAttribute;
+ if ((numElements % numComponents) != 0) {
+ int temp = qFloor(dataSize / (float)stride);
+ int fullElemSize = temp * stride;
+ if (fullElemSize + numComponents * typeSize <= dataSize) {
+ /* num full elements plus the part of the buffer in which we fit */
+ numElements = temp + 1;
+ } else {
+ numElements = temp;
+ }
+ }
#if 0
qDebug() << "numElements = "<<numElements;
- qDebug() << "sizePerAttribute = "<<sizePerAttribute;
+ qDebug() << "elementSize = "<<elementSize;
qDebug() << "stride = "<<stride;
qDebug() << "numComponents = "<<numComponents;
+ qDebug() << "typeSize = "<<typeSize;
#endif
- if (numElements * sizePerAttribute > dataArray.size()) {
- qDebug()<<"Vertex data too large for the given binary data";
- return strings;
- }
- if ((numElements % numComponents) != 0) {
- qDebug()<<"Bad stride for the given vertex data";
- return strings;
- }
- for (int i = 0; i < numElements; i += numComponents) {
- QString vectorString = QString::fromLatin1("%1) [").arg(i / numComponents);
+ for (int i = 0; i < numElements; ++i) {
+ QString vectorString = QString::fromLatin1("%1) [").arg(i);
for (int j = 0; j < numComponents; ++j) {
- int idx = i + j;
+ int offset = i*stride + j*typeSize;
const T *elementPtr =
- (const T*)(data + idx * sizePerAttribute);
+ (const T*)(data + offset);
T elem = *elementPtr;
vectorString += QString::number(elem);
if ((j + 1) < numComponents)
VertexDataInterpreter::VertexDataInterpreter(QObject *parent)
: QObject(parent),
m_listWidget(0),
- m_type(GL_FLOAT),
+ m_type(DT_FLOAT),
m_stride(16),
- m_components(4)
+ m_components(4),
+ m_startingOffset(0)
{
}
QStringList lst;
switch(m_type) {
- case GL_FLOAT:
- lst = convertData<float>(m_data, m_type, m_stride, m_components);
+ case DT_INT8:
+ lst = convertData<qint8>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_UNSIGNED_BYTE:
- lst = convertData<quint8>(m_data, m_type, m_stride, m_components);
+ case DT_UINT8:
+ lst = convertData<quint8>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_BYTE:
- lst = convertData<qint8>(m_data, m_type, m_stride, m_components);
+ case DT_INT16:
+ lst = convertData<qint16>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_SHORT:
- lst = convertData<qint16>(m_data, m_type, m_stride, m_components);
+ case DT_UINT16:
+ lst = convertData<quint16>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_UNSIGNED_SHORT:
- lst = convertData<quint16>(m_data, m_type, m_stride, m_components);
+ case DT_INT32:
+ lst = convertData<qint32>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_INT:
- lst = convertData<unsigned int>(m_data, m_type, m_stride, m_components);
+ case DT_UINT32:
+ lst = convertData<quint32>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
- case GL_UNSIGNED_INT:
- lst = convertData<int>(m_data, m_type, m_stride, m_components);
+ case DT_FLOAT:
+ lst = convertData<float>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
+ break;
+ case DT_DOUBLE:
+ lst = convertData<double>(m_data, m_type, m_stride, m_components,
+ m_startingOffset);
break;
default:
qDebug()<<"unkown gltype = "<<m_type;
void VertexDataInterpreter::setTypeFromString(const QString &str)
{
if (str == QLatin1String("GL_FLOAT")) {
- setType(GL_FLOAT);
+ setType(DT_FLOAT);
} else if (str == QLatin1String("GL_INT")) {
- setType(GL_INT);
+ setType(DT_INT32);
} else if (str == QLatin1String("GL_UNSIGNED_INT")) {
- setType(GL_UNSIGNED_INT);
+ setType(DT_UINT32);
} else if (str == QLatin1String("GL_SHORT")) {
- setType(GL_SHORT);
+ setType(DT_INT16);
} else if (str == QLatin1String("GL_UNSIGNED_SHORT")) {
- setType(GL_UNSIGNED_SHORT);
+ setType(DT_UINT16);
} else if (str == QLatin1String("GL_BYTE")) {
- setType(GL_BYTE);
+ setType(DT_INT8);
} else if (str == QLatin1String("GL_UNSIGNED_BYTE")) {
- setType(GL_UNSIGNED_BYTE);
+ setType(DT_UINT8);
+ } else if (str == QLatin1String("GL_DOUBLE")) {
+ setType(DT_DOUBLE);
} else {
qDebug()<<"unknown vertex data type";
}
}
+int VertexDataInterpreter::startingOffset() const
+{
+ return m_startingOffset;
+}
+
+void VertexDataInterpreter::setStartingOffset(int offset)
+{
+ m_startingOffset = offset;
+}
+
#include "vertexdatainterpreter.moc"
projects / apitrace / blobdiff