void AxisRenderer::render(const AxisCamera &camera, QGLShaderProgram &program, QGLBuffer &vertBuffer, QGLBuffer &indexBuffer, bool selected)
{
qDebug()<<"[AxisRender] start of render";
initializeGLFunctions();
//bind the program for use
if(!program.bind()){
QMessageBox::critical(0, "Error", "Could not bind program for use");
qFatal("Could not bind program for use");
}
qDebug()<<"[AxisRender] Drawing";
//set up shader locations
program.bind();
GLint vertLoc = program.attributeLocation("vertex");
Q_ASSERT(vertLoc != -1);
GLint colorLoc = program.uniformLocation("color");
Q_ASSERT(colorLoc != -1);
GLint mvpLoc = program.uniformLocation("modelToCamera");
Q_ASSERT(mvpLoc != -1);
//set default color to a cyan
QVector4D color(0.0f, .5f, 1.0f, 1.0f);
//modify the color for selected geometry
if(selected){
qDebug()<<"[AxisRender] adding selection color";
color = color + QVector4D(1.0f, 0.0f, 0.0f, 0.0f);
}
//set the uniform values
program.setUniformValueArray(colorLoc, &color, 1);
program.setUniformValueArray(mvpLoc, &camera.getProjMatrix(), 1);
//bind and set the vertex buffer for attribute
vertBuffer.bind();
program.enableAttributeArray(vertLoc);
program.setAttributeBuffer(vertLoc, GL_FLOAT, 0, 4);
//bind the index buffer for the draw call
indexBuffer.bind();
qDebug()<<"[AxisRender] Drawing";
//draw the index buffer NOTE: Hard set to 24 values for a box!
glDrawElements(GL_LINES, 24, GL_UNSIGNED_INT, NULL);
}
void AxisRenderer::drawBrush(const M3DEditLevel::Box &brush, QGLShaderProgram &program, const AxisCamera &camera)
{
QVector<QVector3D> temp = brush.getVerticies();
QVector<GLfloat> verts;
//fill vector with brush verticies
for(int i = 0; i < temp.size(); ++i){
QVector3D vert = temp[i];
verts.push_back(vert.x());
verts.push_back(vert.y());
verts.push_back(vert.z());
verts.push_back(1.0f);
}
QVector<unsigned int> indicies = brush.getLineIndex();
//bind brush buffer and fill with verticies
QGLBuffer brushBuffer(QGLBuffer::VertexBuffer);
brushBuffer.create();
brushBuffer.bind();
brushBuffer.allocate(verts.data(), sizeof(GLfloat) * verts.size());
//bind index buffer and fill with indicies
QGLBuffer brushIndex(QGLBuffer::IndexBuffer);
brushIndex.create();
brushIndex.bind();
brushIndex.allocate(indicies.data(), sizeof(unsigned int) * indicies.size());
//set up uniforms
program.bind();
program.setUniformValueArray("color", &QVector4D(1.0f, 1.0f, 1.0f, 1.0f), 1);
program.setUniformValueArray("modelToCamera", &camera.getProjMatrix(), 1);
//set up buffers
brushBuffer.bind();
program.enableAttributeArray("vertex");
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
//draw brush. NOTE: Fixed 24 indicies for a box only!
brushIndex.bind();
glDrawElements(GL_LINES, 24, GL_UNSIGNED_INT, 0);
}
void AxisRenderer::drawCamLine(QVector3D from, QVector3D to, QGLShaderProgram &program, const AxisCamera &camera)
{
const GLfloat color[] ={1.0f, 0.0f, 0.0f, 1.0f}; //default red color
//temp vector to hold line verticies
std::vector<GLfloat> bufferData;
//from verticies
bufferData.push_back(from.x());
bufferData.push_back(from.y());
bufferData.push_back(from.z());
bufferData.push_back(1.0f);
//to verticies
bufferData.push_back(to.x());
bufferData.push_back(to.y());
bufferData.push_back(to.z());
bufferData.push_back(1.0f);
program.bind();
//create and fill line buffer with verticies
QGLBuffer line(QGLBuffer::VertexBuffer);
line.create();
line.bind();
line.allocate(bufferData.data(), sizeof(GLfloat) * 8);
//get locations
GLuint colorLoc = program.uniformLocation("color");
Q_ASSERT(colorLoc != -1);
GLuint mvpLoc = program.uniformLocation("modelToCamera");
Q_ASSERT(mvpLoc != -1);
//setup line for drawing
line.bind();
program.enableAttributeArray("vertex");
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
program.setUniformValueArray(colorLoc, color, 1, 4);
program.setUniformValueArray(mvpLoc, &(camera.getProjMatrix()), 1);
glDrawArrays(GL_LINES, 0, 2);
}
void AxisRenderer::renderOrigin(QGLShaderProgram &program, const AxisCamera &camera)
{
qDebug()<<"[AxisRender] drawing origin lines";
initializeGLFunctions();
//data for the xline
const GLfloat xline[] = {
0.0f, 0.0f, 0.0f, 1.0f,
5.0f, 0.0f, 0.0f, 1.0f
};
//data for the yline
const GLfloat yline[] = {
0.0f, 0.0f, 0.0f, 1.0f,
0.0f, 5.0f, 0.0f, 1.0f
};
//data for the zline
const GLfloat zline[] = {
0.0f, 0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 5.0f, 1.0f
};
//data for each line color
const GLfloat xcolor[] = { 1.0f, 0.0f, 0.0f, 1.0f};
const GLfloat ycolor[] = { 0.0f, 1.0f, 0.0f, 1.0f};
const GLfloat zcolor[] = { 1.0f, 0.0f, 1.0f, 1.0f};
//fill buffer for xline
QGLBuffer xbuff(QGLBuffer::VertexBuffer);
xbuff.create();
xbuff.bind();
xbuff.setUsagePattern(QGLBuffer::StaticDraw);
xbuff.allocate(xline, sizeof(xline));
//fill buffer for yline
QGLBuffer ybuff(QGLBuffer::VertexBuffer);
ybuff.create();
ybuff.bind();
ybuff.setUsagePattern(QGLBuffer::StaticDraw);
ybuff.allocate(yline, sizeof(yline));
//fill buffer for zline
QGLBuffer zbuff(QGLBuffer::VertexBuffer);
zbuff.create();
zbuff.bind();
zbuff.setUsagePattern(QGLBuffer::StaticDraw);
zbuff.allocate(zline, sizeof(zline));
program.bind();
//set the uniforms
GLuint colorLoc = program.uniformLocation("color");
Q_ASSERT(colorLoc != -1);
GLuint mvpLoc = program.uniformLocation("modelToCamera");
Q_ASSERT(mvpLoc != -1);
program.setUniformValueArray(mvpLoc, &(camera.getProjMatrix()), 1);
//bind then draw xline
xbuff.bind();
program.enableAttributeArray("vertex");
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
program.setUniformValueArray(colorLoc, xcolor, 1, 4);
glDrawArrays(GL_LINES, 0, 2);
//bind then draw yline
ybuff.bind();
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
program.setUniformValueArray(colorLoc, ycolor, 1, 4);
glDrawArrays(GL_LINES, 0, 2);
//bind then draw zline
zbuff.bind();
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
program.setUniformValueArray(colorLoc, zcolor, 1, 4);
glDrawArrays(GL_LINES, 0, 2);
//destroy the buffers(Probably should be created and stored for longer than one call but context issue)
xbuff.bind();
xbuff.destroy();
ybuff.bind();
ybuff.destroy();
zbuff.bind();
zbuff.destroy();
}
void AxisRenderer::drawGrid(int gridSize, QGLShaderProgram &program,const AxisCamera &camera)
{
qDebug()<< "[AxisRender] Drawing Grid";
int gridNumber = camera.getGridFactor() * 2; //double size of grid to ensure it covers entire view
float lineLimit = gridNumber * gridSize; //bounds of grid for this size and number
qDebug()<< "[AxisRender] lineLimit = " << lineLimit;
//general xline for grid
float lineX[] = {lineLimit, 0.0f, 0.0f, 1.0f,
-lineLimit, 0.0f, 0.0f, 1.0f};
//general yline for grid
float lineY[] = { 0.0f, lineLimit, 0.0f, 1.0f,
0.0f, -lineLimit, 0.0f, 1.0f};
//general zline for grid
float lineZ[] = {0.0f, 0.0f, lineLimit, 1.0f,
0.0f, 0.0f, -lineLimit, 1.0f};
//bind and fill xline buffer
program.bind();
QGLBuffer bufferX(QGLBuffer::VertexBuffer);
bufferX.setUsagePattern(QGLBuffer::StaticDraw);
bufferX.create();
bufferX.bind();
bufferX.allocate(lineX,sizeof(lineX));
//bind and fill yline buffer
QGLBuffer bufferY(QGLBuffer::VertexBuffer);
bufferY.setUsagePattern(QGLBuffer::StaticDraw);
bufferY.create();
bufferY.bind();
bufferY.allocate(lineY, sizeof(lineY));
//bind and fill zline buffer
QGLBuffer bufferZ(QGLBuffer::VertexBuffer);
bufferZ.setUsagePattern(QGLBuffer::StaticDraw);
bufferZ.create();
bufferZ.bind();
bufferZ.allocate(lineZ, sizeof(lineZ));
QMatrix4x4 mvp;
QMatrix4x4 vp = camera.getProjMatrix();
QMatrix4x4 m;
//find the offest based on camera position
QVector3D pos = camera.getPosistion();
int xoff = pos.x() / gridSize;
int yoff = pos.y() / gridSize;
int zoff = pos.z() / gridSize;
//set color uniform to grey
QVector4D color(0.3f, 0.3f, 0.3f, 1.0f);
program.setUniformValueArray("color", &color, 1);
//draw each line
program.enableAttributeArray("vertex");
for(int i = -gridNumber; i <= gridNumber; ++i){
//x lines only for XY and XZ Axis
if(camera.getLock() == XY || camera.getLock() == XZ)
{
bufferX.bind();
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
//use model matrix to translate each line with offset
m.setToIdentity();
m.translate(0.0f + (xoff * gridSize), (i + yoff) * gridSize, (i + zoff) * gridSize);
mvp = vp * m ;//set mvp up
//set mvp uniform then draw
program.setUniformValueArray("modelToCamera", &mvp, 1);
glDrawArrays(GL_LINES, 0, 2);
}
//y lines for XY and YZ axis only
if(camera.getLock() == XY || camera.getLock() == YZ)
{
bufferY.bind();
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
//use model matrix to translate each line with offset
m.setToIdentity();
m.translate((i + xoff) * gridSize, 0.0f + (yoff * gridSize) ,(i + zoff) * gridSize);
mvp = vp * m;
//set mvp uniform and draw
program.setUniformValueArray("modelToCamera", &mvp, 1);
glDrawArrays(GL_LINES, 0, 2);
}
//z lines
if(camera.getLock() == XZ || camera.getLock() == YZ)
{
bufferZ.bind();
program.setAttributeBuffer("vertex", GL_FLOAT, 0, 4);
//use model matrix to translate each line with offset
m.setToIdentity();
m.translate((i + xoff) * gridSize, (i + yoff) * gridSize ,0.0f + (zoff * gridSize));
mvp = vp * m;
//set mvp uniform then draw
program.setUniformValueArray("modelToCamera", &mvp, 1);
glDrawArrays(GL_LINES, 0, 2);
}
}
}
void View::renderScene()
{
QGLShaderProgram *shader = m_shaderPrograms["snow"];
// Render the wireframes if enabled
if( m_isWireframe ) {
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
for(vector<SceneObject *>::iterator it = m_objects.begin(); it != m_objects.end(); it++) {
(*it)->render(m_useVbo);
}
}
// Render the solid scene
if( m_isSolid ) {
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
// Enable cube maps and draw the skybox
if( m_showSkybox )
{
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_CUBE_MAP);
glBindTexture(GL_TEXTURE_CUBE_MAP, m_cubeMap);
GLuint sky = ResourceLoader::loadSkybox();
glCallList(sky);
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
glDisable(GL_TEXTURE_CUBE_MAP);
glEnable(GL_LIGHTING);
}
for(vector<SceneObject *>::iterator it = m_objects.begin(); it != m_objects.end(); it++) {
SceneObject *obj = *it;
if(m_useShader){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
shader->bind();
shader->setUniformValue("snowTexture", 1);
shader->setUniformValue("snowDisplacement", 2);
shader->setUniformValue("localTexture", 3);
shader->setUniformValue("snowSurfaceTexture", 4);
shader->setUniformValue("useDisplacement", m_useDisplacement);
Vector4 color = obj->getColor();
shader->setUniformValue("color",color.x, color.y, color.z, color.w);
Vector3 scale = obj->getOriginalScale();
shader->setUniformValue("scale",scale.x, scale.y, scale.z);
shader->setUniformValue("tesselationParam", obj->getShape()->getParamOne());
// Set the blur data
int radius = 6;
int dim = radius * 2 + 1;
GLfloat kernel[dim * dim];
GLfloat offsets[dim * dim * 2];
GLfloat ambientAry[4] = {0.7, 0.7, 0.7, 1.0};
GLfloat diffuseAry[4] = {color.x, color.y, color.z, color.w};
GLfloat specularAry[4] = {0.9, 0.9, 0.9, 0.0};
GLfloat m = 0.55;
GLfloat r0 = 0.7;
ShaderAssistant::createBlurKernel(radius, width(), height(), &kernel[0], &offsets[0]);
shader->setUniformValue("arraySize", dim * dim);
shader->setUniformValueArray("offsets", offsets, 2 * dim * dim, 2);
shader->setUniformValueArray("ambient", ambientAry, 1, 4);
shader->setUniformValueArray("diffuse", diffuseAry, 1, 4);
shader->setUniformValueArray("specular", specularAry, 1, 4);
shader->setUniformValue("m", m);
shader->setUniformValue("r0", r0);
// Displacement
ResourceLoader::reloadHeightMapTexture(obj->getDisplacementMap(),obj->getDisplacementMapId());
glActiveTexture(GL_TEXTURE2);
//glUniform1i(glGetUniformLocation(shader->programId(), "snowDisplacement"), 0);
glBindTexture(GL_TEXTURE_2D,obj->getDisplacementMapId());
// Bump
glActiveTexture(GL_TEXTURE1);
//QImage img = QGLWidget::convertToGLFormat((* obj->getBumpMap()).mirrored(false,true));
if(!m_usePbo){
ResourceLoader::reloadHeightMapTexture(obj->getBumpMap(),obj->getBumpMapId());
glBindTexture(GL_TEXTURE_2D,obj->getBumpMapId());
}else{
m_pboIndexA = (m_pboIndexA + 1) % 2;
m_pboIndexB = (m_pboIndexA + 1) % 2;
glBindTexture(GL_TEXTURE_2D,obj->getBumpMapId());
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, obj->getPboBuffers()[m_pboIndexA]);
//PBO -> Texture
int width = obj->getBumpMap()->width();
int height = obj->getBumpMap()->height();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, height, width, GL_BGRA, GL_UNSIGNED_BYTE, 0);
int imgSize = width * height* sizeof(BGRA);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, obj->getPboBuffers()[m_pboIndexB]);
glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, imgSize, 0, GL_STREAM_DRAW_ARB);
GLubyte* ptr = (GLubyte*)glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY_ARB);
if(ptr){
unsigned char *pixel = (unsigned char *)ptr;
/*for (int i = 0; i < img.height(); i++) {
memcpy(pixel, img.scanLine(i), img.bytesPerLine());
pixel += img.bytesPerLine();
}*/
memcpy(pixel, obj->getBumpMap()->bits(), obj->getBumpMap()->byteCount());
glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
}
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
}
if( obj->getColorTexture() != 0 ) {
shader->setUniformValue("useLocalTexture", true);
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, obj->getColorTexture());
} else {
shader->setUniformValue("useLocalTexture", false);
}
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, m_snowTextureId);
glActiveTexture(GL_TEXTURE0);
}
(*it)->render(m_useVbo);
if( m_useShader )
{
shader->release();
glBindTexture(GL_TEXTURE_2D,0);
glDisable(GL_BLEND);
}
}
}
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}