void MainWindow::sendDataToHardware()
{
Neumont::ShapeData cubeData = Neumont::ShapeGenerator::makeCube();
Neumont::ShapeData torusData = Neumont::ShapeGenerator::makeTorus(12);
Neumont::ShapeData planeData = Neumont::ShapeGenerator::makePlane(3);
glGenBuffers(1, &theBufferID);
glBufferData(GL_ARRAY_BUFFER,
cubeData.vertexBufferSize() + cubeData.indexBufferSize() +
torusData.vertexBufferSize() + torusData.indexBufferSize() +
planeData.vertexBufferSize() + planeData.indexBufferSize(), 0, GL_FALSE);
GLintptr currentOffset = 0;
glBufferSubData(GL_ARRAY_BUFFER, currentOffset, cubeData.vertexBufferSize(), cubeData.verts);
currentOffset += cubeData.vertexBufferSize();
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, currentOffset, cubeData.indexBufferSize(), cubeData.verts);
currentOffset += cubeData.indexBufferSize();
glBufferSubData(GL_ARRAY_BUFFER, currentOffset, torusData.vertexBufferSize(), torusData.verts);
currentOffset += torusData.vertexBufferSize();
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, currentOffset, torusData.indexBufferSize(), torusData.verts);
currentOffset += torusData.indexBufferSize();
glBufferSubData(GL_ARRAY_BUFFER, currentOffset, planeData.vertexBufferSize(), planeData.verts);
currentOffset += planeData.vertexBufferSize();
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, currentOffset, planeData.indexBufferSize(), planeData.verts);
currentOffset += planeData.indexBufferSize();
cubeNumIndices = cubeData.numIndices;
torusNumIndices = torusData.numIndices;
planeNumIndices = planeData.numIndices;
glBindAttribLocation(programID, cubeVertexArrayIndex, &cubeVertexArrayIndex);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
}
void MyGLWidget::fillBuffer()
{
// arrow
Neumont::ShapeData data = Neumont::ShapeGenerator::makeArrow();
arrow_numIndices = data.numIndices;
arrow_shapeData = data;
glGenBuffers(1, &arrow_vertexBufferID);
glGenBuffers(1, &arrow_indexBufferID);
glBindBuffer(GL_ARRAY_BUFFER, arrow_vertexBufferID);
glBufferData(GL_ARRAY_BUFFER, data.vertexBufferSize(), data.verts, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, arrow_indexBufferID);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, data.indexBufferSize(), data.indices, GL_STATIC_DRAW);
data.cleanUp();
// torus
data = Neumont::ShapeGenerator::makeTorus(50);
torus_numIndices = data.numIndices;
torus_shapeData = data;
glGenBuffers(1, &torus_vertexBufferID);
glGenBuffers(1, &torus_indexBufferID);
glBindBuffer(GL_ARRAY_BUFFER, torus_vertexBufferID);
glBufferData(GL_ARRAY_BUFFER, data.vertexBufferSize(), data.verts, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, torus_indexBufferID);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, data.indexBufferSize(), data.indices, GL_STATIC_DRAW);
data.cleanUp();
// Tell GL how to read the bits (3 for the position, 4 for the color)
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, Neumont::Vertex::STRIDE, 0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, Neumont::Vertex::STRIDE, BUFFER_OFFSET(Neumont::Vertex::COLOR_OFFSET));
}