void CGLSLRayCasting::init(const string& _vertfile,const string& _fragfile){
m_SimpleVertexShader = CreateShaderFromFile(_vertfile);
m_FragmentShader = CreateShaderFromFile(_fragfile);
m_Program = glCreateProgram();
glAttachShader(m_Program, m_SimpleVertexShader);
glAttachShader(m_Program, m_FragmentShader);GetGLError("glTexImage3D");
glLinkProgram(m_Program);
string names[]={"voltexture","threshold"};
for(int i=0;i<sizeof(names)/sizeof(names[0]);i++){
m_Map[0].insert(pair<string,int>(names[i],glGetUniformLocation(m_Program,names[i].c_str())));
}GetGLError("glTexImage3D");
glUseProgram(m_Program);
glUniform1f(m_Map[0]["threshold"],m_threshold);
glUniform1i(m_Map[0]["voltexture"],0);
glUseProgram(0);
m_SliceVertexShader= CreateShaderFromFile("slice.vert");
m_SliceProgram = glCreateProgram();GetGLError("glTexImage3D");
glAttachShader(m_SliceProgram, m_SliceVertexShader);GetGLError("glTexImage3D");
glAttachShader(m_SliceProgram, m_FragmentShader);GetGLError("glTexImage3D");
glLinkProgram(m_SliceProgram);GetGLError("glTexImage3D");
checklinkstatus(m_SliceProgram);GetGLError("glTexImage3D");
glUseProgram(m_SliceProgram);GetGLError("glTexImage3D");
string names2[]={"voltexture","threshold"};//,"frontIdx"};
for(int i=0;i<sizeof(names2)/sizeof(names2[0]);i++){
m_Map[1].insert(pair<string,int>(names2[i],
glGetUniformLocation(m_SliceProgram,names2[i].c_str())));GetGLError("glTexImage3D");
}
}
void CGLSLRayCasting::GetLocations(){
string names[]={"voltexture","threshold"};
for(int i=0;i<sizeof(names)/sizeof(names[0]);i++){
m_Map[0].insert(pair<string,int>(names[i],glGetUniformLocation(m_Program,names[i].c_str())));
if(m_Map[0][names[i]]<0){assert(!"存在しないユニフォーム変数名");}
GetGLError("glTexImage3D");
}
}
void CPlyRender::InitCubeMapping(void)
{
GLenum target[]={
GL_TEXTURE_CUBE_MAP_POSITIVE_X,
GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
};
stringstream filename;
glGenTextures(1, &mTexId[CUBEMAP]);
glBindTexture(GL_TEXTURE_CUBE_MAP, mTexId[CUBEMAP]);
for(int i=0;i<6;i++){
filename.str("");
filename << "../data/cubemap/" << CUBENAME << "/" << CUBEMAP_IMAGE_NAMES[i] << ".jpg";
cv::Mat img = cv::imread(filename.str().c_str());
cv::flip(img, img, 0);
if (img.data == nullptr) {
tr2::sys::path mypath;
cout << "current directory:" << tr2::sys::current_path().string() << endl;
cout << "tried to open file:" << filename.str() << endl;
assert(!"cubemap image not found");
}
glTexImage2D ( target[i], 0, GL_RGB, img.size().width,img.size().height, 0, GL_RGB, GL_UNSIGNED_BYTE, img.data);
}
/* glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glTexParameteri ( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
glfwFreeImage(&img);
return true;
}*/
// テクスチャを拡大・縮小する方法の指定
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// テクスチャの繰り返し方法の指定
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_REPEAT);
// キューブマッピング用のテクスチャ座標を生成する
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
/* 設定対象を無名テクスチャに戻す */
glBindTexture(GL_TEXTURE_2D, 0);
GetGLError("teximage2d");
}
void DrawSkybox::init(const std::vector<std::string>& faceFiles, const struct Shader& shader) {
Texture<unsigned char> textpx = make2DTexture(faceFiles[0].c_str(), true, true);
cube_.textId_[DrawObject::eText0] = makeGL2DTexture(textpx);
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
Texture<unsigned char> textnx = make2DTexture(faceFiles[1].c_str(), true, true);
cube_.textId_[DrawObject::eText1] = makeGL2DTexture(textnx);
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
cube_.textId_[DrawObject::eText2] = makeGL2DTexture(faceFiles[2].c_str());
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
cube_.textId_[DrawObject::eText3] = makeGL2DTexture(faceFiles[3].c_str());
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
cube_.textId_[DrawObject::eText4] = makeGL2DTexture(faceFiles[4].c_str());
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
Texture<unsigned char> textnz = make2DTexture(faceFiles[5].c_str(), true, true);
cube_.textId_[DrawObject::eText5] = makeGL2DTexture(textnz);
SetGLTextureFilter(GL_TEXTURE_2D, GL_LINEAR, GL_LINEAR);
SetGLTextureBorder(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
GetGLError();
Object obj;
for (unsigned i=0;i<24;i++) {
unsigned ix = 3*i;
Real3 vx(vertices[ix],vertices[ix+1],vertices[ix+2]);
obj.vx_.push_back(vx);
}
for (unsigned i=0;i<24;i++) {
unsigned ix = 2*i;
Real2 uv(tcoords[ix],tcoords[ix+1]);
obj.uv_.push_back(uv);
}
for (unsigned i=0;i<12;i++) {
unsigned ix = 3*i;
UShort3 fc(indices[ix],indices[ix+1],indices[ix+2]);
obj.fc_.push_back(fc);
}
cube_.init(obj, GL_STATIC_DRAW);
cube_.shader_ = &shader;
}
Result GraphicsInterfaceOpenGL::writeTexture2D(void *o_tex, int width, int height, TextureFormat format, const void *buf, size_t)
{
GLenum gl_format = 0;
GLenum gl_type = 0;
GLenum gl_itype = 0;
GetGLTextureType(format, gl_format, gl_type, gl_itype);
// available OpenGL 4.5 or later
// glTextureSubImage2D((GLuint)(size_t)o_tex, 0, 0, 0, width, height, internal_format, internal_type, buf);
auto ret = Result::OK;
glBindTexture(GL_TEXTURE_2D, (GLuint)(size_t)o_tex);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, gl_format, gl_type, buf);
ret = GetGLError();
glBindTexture(GL_TEXTURE_2D, 0);
return ret;
}
Result GraphicsInterfaceOpenGL::createTexture2D(void **dst_tex, int width, int height, TextureFormat format, const void *data, ResourceFlags flags)
{
GLenum gl_format = 0;
GLenum gl_type = 0;
GLenum gl_itype = 0;
GetGLTextureType(format, gl_format, gl_type, gl_itype);
auto ret = Result::OK;
GLuint tex = 0;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, gl_itype, width, height, 0, gl_format, gl_type, data);
ret = GetGLError();
glBindTexture(GL_TEXTURE_2D, 0);
*(GLuint*)dst_tex = tex;
return ret;
}
Result GraphicsInterfaceOpenGL::readTexture2D(void *o_buf, size_t, void *tex, int, int, TextureFormat format)
{
GLenum gl_format = 0;
GLenum gl_type = 0;
GLenum gl_itype = 0;
GetGLTextureType(format, gl_format, gl_type, gl_itype);
// available OpenGL 4.5 or later
// glGetTextureImage((GLuint)(size_t)tex, 0, internal_format, internal_type, bufsize, o_buf);
sync();
auto ret = Result::OK;
glBindTexture(GL_TEXTURE_2D, (GLuint)(size_t)tex);
glGetTexImage(GL_TEXTURE_2D, 0, gl_format, gl_type, o_buf);
ret = GetGLError();
glBindTexture(GL_TEXTURE_2D, 0);
return ret;
}
Result GraphicsInterfaceOpenGL::readBuffer(void *dst, void *src_buf, size_t read_size, BufferType type)
{
GLuint buf = (GLuint)(size_t)src_buf;
GLenum gltype = GetGLBufferType(type);
Result ret = Result::OK;
glBindBuffer(gltype, buf);
void *mapped_data = glMapBuffer(gltype, GL_READ_ONLY);
if (mapped_data) {
memcpy(dst, mapped_data, read_size);
glUnmapBuffer(gltype);
}
else {
ret = GetGLError();
}
glBindBuffer(gltype, 0);
return ret;
}
Result GraphicsInterfaceOpenGL::writeBuffer(void *dst_buf, const void *src, size_t write_size, BufferType type)
{
GLuint buf = (GLuint)(size_t)dst_buf;
GLenum gltype = GetGLBufferType(type);
Result ret = Result::OK;
glBindBuffer(gltype, buf);
void *mapped_data = glMapBuffer(gltype, GL_WRITE_ONLY);
if (mapped_data) {
memcpy(mapped_data, src, write_size);
glUnmapBuffer(gltype);
}
else {
ret = GetGLError();
}
glBindBuffer(gltype, 0);
return ret;
}
int FBO::attach() {
buffers_[eDepth]= createRenderBuffer();
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, size_[eWidth], size_[eHeight]);
if (isTexture_) {
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, buffers_[eColor], 0);
}
else {
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, buffers_[eColor]);
}
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, buffers_[eDepth]);
if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
std::cout<<"failed to make complete framebuffer object:"<<std::endl<<glCheckFramebufferStatus(GL_FRAMEBUFFER);
return 0;
}
GetGLError();
return name_;
}
Result GraphicsInterfaceOpenGL::createBuffer(void **dst_buf, size_t size, BufferType type, const void *data, ResourceFlags flags)
{
GLenum gltype = GetGLBufferType(type);
GLenum glusage = GL_STATIC_DRAW;
if (flags & ResourceFlags::CPU_Write) {
glusage = GL_DYNAMIC_DRAW;
}
if (flags & ResourceFlags::CPU_Read) {
glusage = GL_STREAM_DRAW;
}
auto ret = Result::OK;
GLuint buf = 0;
glGenBuffers(1, &buf);
glBindBuffer(gltype, buf);
glBufferData(gltype, size, data, glusage);
ret = GetGLError();
glBindBuffer(gltype, 0);
*(GLuint*)dst_buf = buf;
return ret;
}
void BaseShader::linkProgram() {
GLint logLength, status;
glLinkProgram(mProgram);
glGetProgramiv(mProgram, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0)
{
GLchar *log = (GLchar*)malloc(logLength);
glGetProgramInfoLog(mProgram, logLength, &logLength, log);
printf("Program link log:\n%s\n", log);
free(log);
}
glGetProgramiv(mProgram, GL_LINK_STATUS, &status);
if (status == 0)
{
printf("Failed to link program");
}
glValidateProgram(mProgram);
glGetProgramiv(mProgram, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0)
{
GLchar *log = (GLchar*)malloc(logLength);
glGetProgramInfoLog(mProgram, logLength, &logLength, log);
printf("Program validate log:\n%s\n", log);
free(log);
}
glGetProgramiv(mProgram, GL_VALIDATE_STATUS, &status);
if (status == 0)
{
printf("Failed to validate program");
}
printf("prog is: %i\n", mProgram);
GetGLError();
}
// Called by Rocket when it wants to render application-compiled geometry.
void RocketRenderInterface::RenderCompiledGeometry(
Rocket::Core::CompiledGeometryHandle geometry,
const Rocket::Core::Vector2f& translation) {
if (geometry <= 0) {
throw runtime_error("RocketRenderInterface::"
"RenderCompiledGeometry() - ERROR: geometry index = 0!");
}
uint32_t i_geometry = static_cast<uint32_t>(geometry);
ROCKET_SHADER_TYPE cur_shader = _shader_types[i_geometry-1];
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
GetGLError();
_shader_programs[cur_shader]->bind();
bindTexture(i_geometry-1);
GetGLError();
bindUniforms(cur_shader, translation);
GetGLError();
glBindVertexArray(_vao[i_geometry-1]);
GetGLError();
glDrawElements(GL_TRIANGLES, _index_size[i_geometry-1],
GL_UNSIGNED_INT, BUFFER_OFFSET(0));
GetGLError();
glBindVertexArray(0);
GetGLError();
unbindTexture();
GetGLError();
glDisable(GL_BLEND);
}
bool ModelData::FormFlippedDisplayLists() //returns opengl error enunum.
{
unsigned int l;
unsigned int t;
const unsigned int listSize = 10000;//each list to be 10000 triangles big.
unsigned int tSeamCount = 0;
//first lets free up existing display lists if there are any
for( l = 0; l < flippedDispLists.size(); l++)
{
glDeleteLists(flippedDispLists[l],1);
}
if(bypassDispLists)
return true;
flippedDispLists.push_back(glGenLists(1));
if(flippedDispLists.at(flippedDispLists.size()-1) == 0)
return false;//failure to allocate a list index???
glNewList(flippedDispLists.at(flippedDispLists.size()-1),GL_COMPILE);
glBegin(GL_TRIANGLES);// Drawing Using Triangles
for(t = 0; t < triList.size(); t = t + 1 + displaySkipping)//for each triangle
{
glNormal3f(-triList[t].normal.x(),triList[t].normal.y(),triList[t].normal.z());//normals
glVertex3f( -triList[t].vertex[2].x(), triList[t].vertex[2].y(), triList[t].vertex[2].z());
glVertex3f( -triList[t].vertex[1].x(), triList[t].vertex[1].y(), triList[t].vertex[1].z());
glVertex3f( -triList[t].vertex[0].x(), triList[t].vertex[0].y(), triList[t].vertex[0].z());
//make a new seam.
if(tSeamCount >= listSize)
{
glEnd();
glEndList();
flippedDispLists.push_back(glGenLists(1));
if(flippedDispLists.at(flippedDispLists.size()-1) == 0)
return false;//failure to allocate a list index???
//when creating a seam check for graphics error
int err = GetGLError();
if(err)
{
if(err == GL_OUT_OF_MEMORY)
{
displaySkipping += 10;
return FormFlippedDisplayLists();
}
else
return false;
}
glNewList(flippedDispLists.at(flippedDispLists.size()-1),GL_COMPILE);
glBegin(GL_TRIANGLES);// Drawing Using Triangles
tSeamCount = 0;
}
tSeamCount++;
}
glEnd();
glEndList();
int err = GetGLError();
if(err)
{
if(err == GL_OUT_OF_MEMORY)
{
displaySkipping += 10;
return FormFlippedDisplayLists();
}
else
return false;
}
qDebug() << flippedDispLists.size() << "Flipped Display Lists created for model " << filename;
return true;
}
BaseShader::BaseShader(const char* vShader, const char* fShader) {
GLint logLength, status;
GLchar* sourceString = NULL;
GetGLError();
// Create a program object
mProgram = glCreateProgram();
GetGLError();
if (vShader){
// Allocate memory for the source string including the version preprocessor information
sourceString = getShaderString(vShader, "vsh");
GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertexShader, 1, (const GLchar **)&(sourceString), NULL);
glCompileShader(vertexShader);
glGetShaderiv(vertexShader, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0)
{
GLchar *log = (GLchar*) malloc(logLength);
glGetShaderInfoLog(vertexShader, logLength, &logLength, log);
printf("Vtx shader compiled log: %s\n", log);
free(log);
}
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &status);
if (status == 0)
{
printf("Failed to compile vtx shader:\n%s\n", sourceString);
}
free(sourceString);
sourceString = NULL;
// Attach the vertex shader to our program
glAttachShader(mProgram, vertexShader);
// Delete the vertex shader since it is now attached
// to the program, which will retain a reference to it
glDeleteShader(vertexShader);
}
if (fShader){
// Allocate memory for the source string including the version preprocessor information
sourceString = getShaderString(fShader, "fsh");
GLuint fragShader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragShader, 1, (const GLchar **)&(sourceString), NULL);
glCompileShader(fragShader);
glGetShaderiv(fragShader, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0)
{
GLchar *log = (GLchar*)malloc(logLength);
glGetShaderInfoLog(fragShader, logLength, &logLength, log);
printf("Frag Shader compile log:\n%s\n", log);
free(log);
}
glGetShaderiv(fragShader, GL_COMPILE_STATUS, &status);
if (status == 0)
{
printf("Failed to compile frag shader:\n%s\n", sourceString);
}
free(sourceString);
sourceString = NULL;
// Attach the fragment shader to our program
glAttachShader(mProgram, fragShader);
// Delete the fragment shader since it is now attached
// to the program, which will retain a reference to it
glDeleteShader(fragShader);
}
// linkProgram();
}
void MarchingCubesRenderer::init(){
//_texture.createPyroclasticVolume(64, 0.025f);
_texture.loadRaw3DData("assets/Data/512x512x512x_uint16.raw", 512, 512, 512, TextureDataType::TDT_USHORT);
//Form multi-face view
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
GetGLError();
/////GLSL/////
programObject.registerShader("shaders/MarchingCubes/TestG80_GS2.glsl", ShaderType::GEOMETRY);
programObject.registerShader("shaders/MarchingCubes/TestG80_VS.glsl", ShaderType::VERTEX);
programObject.registerShader("shaders/MarchingCubes/TestG80_FS.glsl", ShaderType::FRAGMENT);
programObject.compileShaders();
programObject.linkShaders();
programObject.bind();
GetGLError();
glGenTextures(1, &(this->edgeTableTex));
glActiveTexture(GL_TEXTURE1);
GetGLError();
GetGLError();
glBindTexture(GL_TEXTURE_2D, this->edgeTableTex);
GetGLError();
//Integer textures must use nearest filtering mode
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
GetGLError();
//We create an integer texture with new GL_EXT_texture_integer formats
glTexImage2D(GL_TEXTURE_2D, 0, GL_R16I, 256, 1, 0, GL_RED_INTEGER, GL_INT, &edgeTable);
GetGLError();
//Triangle Table texture//
//This texture store the vertex index list for
//generating the triangles of each configurations.
glGenTextures(1, &(this->triTableTex));
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, this->triTableTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R16I, 16, 256, 0, GL_RED_INTEGER, GL_INT, &triTable);
GetGLError();
//Datafield//
//Store the volume data to polygonise
glGenTextures(3, (this->dataFieldTex));
glActiveTexture(GL_TEXTURE0);
//glEnable(GL_TEXTURE_3D);
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[0]);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
//Generate a distance field to the center of the cube
dataField[0] = new float[dataSize.x*dataSize.y*dataSize.z];
for (int k = 0; k < dataSize.z; k++)
for (int j = 0; j < dataSize.y; j++)
for (int i = 0; i < dataSize.x; i++){
float d = distance(vec3(i, j, k), vec3(dataSize.x / 2, dataSize.y / 2, dataSize.z / 2)) / (float)(dataSize.length()*0.4);
dataField[0][i + j*dataSize.x + k*dataSize.x*dataSize.y] = d;//+(rand()%100-50)/200.0f*d;
}
glTexImage3D(GL_TEXTURE_3D, 0, GL_R32F, dataSize.x, dataSize.y, dataSize.z, 0, GL_RED, GL_FLOAT, dataField[0]);
GetGLError();
//Datafield Perturbated//
dataField[1] = new float[dataSize.x*dataSize.y*dataSize.z];
//perturb
for (int k = 0; k < dataSize.z; k++)
for (int j = 0; j < dataSize.y; j++)
for (int i = 0; i < dataSize.x; i++){
float d = dataField[0][i + j*dataSize.x + k*dataSize.x*dataSize.y];
dataField[1][i + j*dataSize.x + k*dataSize.x*dataSize.y] = d + (rand() % 100 - 50) / 100.0f*d;
}
//Smooth
for (int l = 0; l < 4; l++)
for (int k = 1; k < dataSize.z - 1; k++)
for (int j = 1; j < dataSize.y - 1; j++)
for (int i = 1; i < dataSize.x - 1; i++){
dataField[1][i + j*dataSize.x + k*dataSize.x*dataSize.y] = (dataField[1][i + 1 + j*dataSize.x + k*dataSize.x*dataSize.y] + dataField[1][i - 1 + j*dataSize.x + k*dataSize.x*dataSize.y] + dataField[1][i + (j + 1)*dataSize.x + k*dataSize.x*dataSize.y] + dataField[1][i + (j - 1)*dataSize.x + k*dataSize.x*dataSize.y] + dataField[1][i + j*dataSize.x + (k + 1)*dataSize.x*dataSize.y] + dataField[1][i + j*dataSize.x + (k - 1)*dataSize.x*dataSize.y]) / 6.0f;
}
//Store the volume data to polygonise
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[1]);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage3D(GL_TEXTURE_3D, 0, GL_R32F, dataSize.x, dataSize.y, dataSize.z, 0, GL_RED, GL_FLOAT, dataField[1]);
GetGLError();
//Cayley-polynomial//
dataField[2] = new float[dataSize.x*dataSize.y*dataSize.z];
for (int k = 0; k < dataSize.z; k++)
for (int j = 0; j < dataSize.y; j++)
for (int i = 0; i < dataSize.x; i++){
float x = 2.0f / dataSize.x*i - 1.0f;
float y = 2.0f / dataSize.y*j - 1.0f;
float z = 2.0f / dataSize.z*k - 1.0f;
dataField[2][i + j*dataSize.x + k*dataSize.x*dataSize.y] = 16.0f*x*y*z + 4.0f*x*x + 4.0f*y*y + 4.0f*z*z - 1.0f;
}
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[2]);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage3D(GL_TEXTURE_3D, 0, GL_R32F, dataSize.x, dataSize.y, dataSize.z, 0, GL_RED, GL_FLOAT, dataField[2]);
GetGLError();
//Set current texture//
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[curData]);
GetGLError();
programObject.setUniform("dataFieldTex", 0);
programObject.setUniform("edgeTableTex", 1);
programObject.setUniform("triTableTex", 2);
GetGLError();
////Uniforms parameters////
//Initial isolevel
programObject.setUniform("isoLevel", isolevel);
//Step in data 3D texture for gradient computation (lighting)
programObject.setUniform("dataStep", vec3(1.0f / dataSize.x, 1.0f / dataSize.y, 1.0f / dataSize.z));
GetGLError();
//Decal for each vertex in a marching cube
programObject.setUniform("vertDecals[0]", vec3(0.0f, 0.0f, 0.0f));
programObject.setUniform("vertDecals[1]", vec3(cubeStep.x, 0.0f, 0.0f));
programObject.setUniform("vertDecals[2]", vec3(cubeStep.x, cubeStep.y, 0.0f));
programObject.setUniform("vertDecals[3]", vec3(0.0f, cubeStep.y, 0.0f));
programObject.setUniform("vertDecals[4]", vec3(0.0f, 0.0f, cubeStep.z));
programObject.setUniform("vertDecals[5]", vec3(cubeStep.x, 0.0f, cubeStep.z));
programObject.setUniform("vertDecals[6]", vec3(cubeStep.x, cubeStep.y, cubeStep.z));
programObject.setUniform("vertDecals[7]", vec3(0.0f, cubeStep.y, cubeStep.z));
programObject.setUniform("vertDecals[0]", vec3(0.0f, 0.0f, 0.0f));
GetGLError();
////////////////////////////////////////////////////////////////////////////////////////////
///////Two others versions of the program////////
//Geometry Shader only version (plus VS needed)//
//Program object creation
////shaders loading////
//programObjectGS.registerShader("shaders/MarchingCubes/TestG80_GS2.glsl", ShaderType::GEOMETRY);
//programObjectGS.registerShader("shaders/MarchingCubes/TestG80_VS.glsl", ShaderType::VERTEX);
//programObjectGS.registerShader("shaders/MarchingCubes/TestG80_FS_Simple.glsl", ShaderType::FRAGMENT);
//programObjectGS.compileShaders();
//programObjectGS.linkShaders();
//programObjectGS.bind();
//GetGLError();
////Samplers assignment///
//programObjectGS.setUniform("dataFieldTex", 0);
//programObjectGS.setUniform("edgeTableTex", 1);
//programObjectGS.setUniform("triTableTex", 2);
GetGLError();
////Uniforms parameters////
//Initial isolevel
//programObjectGS.setUniform("isolevel", isolevel);
//Decal for each vertex in a marching cube
//programObjectGS.setUniform("vertDecals[0]", vec3(0.0f, 0.0f, 0.0f));
//programObjectGS.setUniform("vertDecals[1]", vec3(cubeStep.x, 0.0f, 0.0f));
//programObjectGS.setUniform("vertDecals[2]", vec3(cubeStep.x, cubeStep.y, 0.0f));
//programObjectGS.setUniform("vertDecals[3]", vec3(0.0f, cubeStep.y, 0.0f));
//programObjectGS.setUniform("vertDecals[4]", vec3(0.0f, 0.0f, cubeStep.z));
//programObjectGS.setUniform("vertDecals[5]", vec3(cubeStep.x, 0.0f, cubeStep.z));
//programObjectGS.setUniform("vertDecals[6]", vec3(cubeStep.x, cubeStep.y, cubeStep.z));
//programObjectGS.setUniform("vertDecals[7]", vec3(0.0f, cubeStep.y, cubeStep.z));
/////
GetGLError();
//Fragment Shader only version for software marching cubes lighting//
//Program object creation
//Vertex Shader for software MC
//programObjectFS.registerShader("shaders/MarchingCubes/TestG80_VS2.glsl", ShaderType::VERTEX);
//programObjectFS.registerShader("shaders/MarchingCubes/TestG80_FS.glsl", ShaderType::FRAGMENT);
//programObjectFS.setAttributeLocations(Mesh::getShaderAttributeLocations());//Not needed when they are in the shader
//programObjectFS.compileShaders();
//programObjectFS.linkShaders();
//programObjectFS.bind();
//programObjectFS.setUniform("dataFieldTex", 0);
//Step in data 3D texture for gradient computation (lighting)
//programObjectFS.setUniform("dataStep", vec3(1.0f / dataSize.x, 1.0f / dataSize.y, 1.0f / dataSize.z));
GetGLError();
//////Grid data construction
_meshGS->createPointGrid(Vector3(cubeSize.x, cubeSize.y, cubeSize.z));
_meshGS->bindAttributesToVAO();
/*
//Linear Walk
gridData = new float[(int)(cubeSize.x*cubeSize.y*cubeSize.z * 3)];
int ii = 0;
for (float k = -1; k < 1.0f; k += cubeStep.z)
for (float j = -1; j < 1.0f; j += cubeStep.y)
for (float i = -1; i < 1.0f; i += cubeStep.x){
gridData[ii] = i;
gridData[ii + 1] = j;
gridData[ii + 2] = k;
ii += 3;
}
//VBO configuration for marching grid linear walk
glGenBuffers(1, &gridDataBuffId);
glBindBuffer(GL_ARRAY_BUFFER, gridDataBuffId);
glBufferData(GL_ARRAY_BUFFER, cubeSize.x*cubeSize.y*cubeSize.z * 3 * 4, gridData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GetGLError();
//Swizzled Walk
int n = 0;
swizzledWalk(n, gridData, ivec3(0, 0, 0), ivec3(cubeSize.x, cubeSize.y, cubeSize.z), cubeSize);
//VBO configuration for marching grid Swizzled walk
glGenBuffers(1, &gridDataSwizzledBuffId);
glBindBuffer(GL_ARRAY_BUFFER, gridDataSwizzledBuffId);
glBufferData(GL_ARRAY_BUFFER, cubeSize.x*cubeSize.y*cubeSize.z * 3 * 4, gridData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
*/
GetGLError();
_mesh->createCube();
_mesh->bindAttributesToVAO();
}
void MarchingCubesRenderer::draw()
{
//States setting
//glEnable(GL_DEPTH_TEST);
//glDisable(GL_ALPHA_TEST);
/*
vec3 eye = vec3(0, 0, 3);
vec3 up(0, 1, 0); vec3 target(0, 0, 0);
mat4 mv =glm::lookAt(eye, target, up);
//Activate modelview
mv = mv * glm::rotate(GLFWTime::getCurrentTime()*0.5f, vec3(0, 1, 0));
//mv = glm::rotate(this->viewOrient.y * 10, vec3(0, 1, 0));
Vector2 size = RenderManager::getInstance().getFramebufferSize();
float aspect = size.x / size.y;
float n = 0.01f;
float f = 100.0f;
float fieldOfView = 0.7f;// 1.74532925f;//100 degrees
mat4 projection = glm::perspective(fieldOfView, aspect, n, f);
mat4 mvp = projection*mv;
*/
mat4 m = glm::rotate(GLFWTime::getCurrentTime()*0.5f, vec3(0, 1, 0));
//FROM RENDERER
Camera& cam = RenderManager::getInstance().getMainCamera();
mat4 view = cam.getModelview();
mat4 proj = cam.getProjection();
mat4 mv = view *m;
mat4 mvp = proj * mv;
GetGLError();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[curData]);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, this->edgeTableTex);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, this->triTableTex);
GetGLError();
isolevel = (sin(GLFWTime::getCurrentTime() * 1.5f) + 1.0f) * 0.02f + 0.45f;
//isolevel = (sin(GLFWTime::getCurrentTime() * 0.5f) + 1.0f) * 0.2f + 0.4f;
//printf("%3.4f\n", isolevel);
if(mode != 0){
if(mode==1){
//Shader program binding
programObject.bind();
_texture.bindToChannel(0);
programObject.setUniform("dataFieldTex", 0);
programObject.setUniform("edgeTableTex", 1);
programObject.setUniform("triTableTex", 2);
programObject.setUniform("isolevel", isolevel);
programObject.setUniform("mvp", mvp);
programObject.setUniform("ModelViewProjection", mvp);
//Decal for each vertex in a marching cube
programObject.setUniform("vertDecals[0]", vec3(0.0f, 0.0f, 0.0f));
programObject.setUniform("vertDecals[1]", vec3(cubeStep.x, 0.0f, 0.0f));
programObject.setUniform("vertDecals[2]", vec3(cubeStep.x, cubeStep.y, 0.0f));
programObject.setUniform("vertDecals[3]", vec3(0.0f, cubeStep.y, 0.0f));
programObject.setUniform("vertDecals[4]", vec3(0.0f, 0.0f, cubeStep.z));
programObject.setUniform("vertDecals[5]", vec3(cubeStep.x, 0.0f, cubeStep.z));
programObject.setUniform("vertDecals[6]", vec3(cubeStep.x, cubeStep.y, cubeStep.z));
programObject.setUniform("vertDecals[7]", vec3(0.0f, cubeStep.y, cubeStep.z));
programObject.setUniform("vertDecals[0]", vec3(0.0f, 0.0f, 0.0f));
}else{
//Shader program binding
programObjectGS.bind();
programObjectGS.setUniform("dataFieldTex", 0);
programObjectGS.setUniform("edgeTableTex", 1);
programObjectGS.setUniform("triTableTex", 2);
programObjectGS.setUniform("isolevel", isolevel);
programObjectGS.setUniform("mvp", mvp);
programObjectGS.setUniform("ModelViewProjection", mvp);
}
//glEnable(GL_LIGHTING);
//Switch to wireframe or solid rendering mode
//if(wireframe)
// glPolygonMode(GL_FRONT_AND_BACK , GL_LINE );
//else
// glPolygonMode(GL_FRONT_AND_BACK , GL_FILL );
_meshGS->drawBuffers();
}else{
//THIS IS SOFTWARE MARCHING CUBES
programObjectFS.bind();
glActiveTexture(GL_TEXTURE0 );
glBindTexture(GL_TEXTURE_3D, this->dataFieldTex[curData]);
programObjectFS.setUniform("dataFieldTex", 0);
programObjectFS.setUniform("mvp", mvp);
programObjectFS.setUniform("ModelViewProjection", mvp);
programObjectFS.setUniform("ModelView", mv);
GetGLError();
RenderMarchCube(dataField[curData], ivec3(128,128,128), ivec3(cubeSize.x, cubeSize.y, cubeSize.z), isolevel);
GetGLError();
programObjectFS.unbind();
}
}
//Software marching cubes
//VERY far to be optimal !
void MarchingCubesRenderer::RenderMarchCube(float *data, ivec3 size, ivec3 gridsize, float isolevel){
vec3 gridStep = vec3(2.0, 2.0, 2.0) / vec3(gridsize.x, gridsize.y, gridsize.z);
ivec3 dataGridStep = size / gridsize;
vec3 *triangles = new vec3[16];
std::vector<Vector3>& positions = _mesh->getPositionVector();
positions.clear();
for (int k = 0; k < gridsize.z - 1; k++)
for (int j = 0; j < gridsize.y - 1; j++)
for (int i = 0; i < gridsize.x - 1; i++){
GridCell cell;
vec3 vcurf(i, j, k);
ivec3 vcuri(i, j, k);
cell.pos[0] = vcurf*gridStep - 1.0f;
ivec3 valPos0 = vcuri*dataGridStep;
cell.val[0] = data[valPos0.x + valPos0.y*size.x + valPos0.z*size.x*size.y];
ivec3 valPos;
cell.pos[1] = cell.pos[0] + vec3(gridStep.x, 0, 0);
if (i == gridsize.x - 1)
valPos = valPos0;
else
valPos = valPos0 + ivec3(dataGridStep.x, 0, 0);
cell.val[1] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[2] = cell.pos[0] + vec3(gridStep.x, gridStep.y, 0);
valPos = valPos0 + ivec3(i == gridsize.x - 1 ? 0 : dataGridStep.x, j == gridsize.y - 1 ? 0 : dataGridStep.y, 0);
cell.val[2] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[3] = cell.pos[0] + vec3(0, gridStep.y, 0);
valPos = valPos0 + ivec3(0, j == gridsize.y - 1 ? 0 : dataGridStep.y, 0);
cell.val[3] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[4] = cell.pos[0] + vec3(0, 0, gridStep.z);
valPos = valPos0 + ivec3(0, 0, k == gridsize.z - 1 ? 0 : dataGridStep.z);
cell.val[4] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[5] = cell.pos[0] + vec3(gridStep.x, 0, gridStep.z);
valPos = valPos0 + ivec3(i == gridsize.x - 1 ? 0 : dataGridStep.x, 0, k == gridsize.z - 1 ? 0 : dataGridStep.z);
cell.val[5] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[6] = cell.pos[0] + vec3(gridStep.x, gridStep.y, gridStep.z);
valPos = valPos0 + ivec3(i == gridsize.x - 1 ? 0 : dataGridStep.x, j == gridsize.y - 1 ? 0 : dataGridStep.y, k == gridsize.z - 1 ? 0 : dataGridStep.z);
cell.val[6] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
cell.pos[7] = cell.pos[0] + vec3(0, gridStep.y, gridStep.z);
valPos = valPos0 + ivec3(0, j == gridsize.y - 1 ? 0 : dataGridStep.y, k == gridsize.z - 1 ? 0 : dataGridStep.z);
cell.val[7] = data[valPos.x + valPos.y*size.x + valPos.z*size.x*size.y];
int numvert = Polygonise(cell, isolevel, triangles);
//Put the triangles into the mesh
for (int n = 0; n < numvert; n++){
positions.push_back(Vector3(triangles[n].x, triangles[n].y, triangles[n].z));
}
}
if (positions.empty() == false)
{
GetGLError();
_mesh->constructBuffer();
GetGLError();
_mesh->drawBuffers();
GetGLError();
}
}
static int GenerateShaders(std::vector<AutoGLProgram> *blend_programs) {
// Limits: GL_MAX_VARYING_COMPONENTS, GL_MAX_TEXTURE_IMAGE_UNITS,
// GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
// clang-format off
const GLchar *shader_preamble = "#version 300 es\n#define LAYER_COUNT ";
const GLchar *vertex_shader_source =
"\n"
"precision mediump int; \n"
"uniform vec4 uViewport; \n"
"uniform sampler2D uLayerTextures[LAYER_COUNT]; \n"
"uniform vec4 uLayerCrop[LAYER_COUNT]; \n"
"in vec2 vPosition; \n"
"in vec2 vTexCoords; \n"
"out vec2 fTexCoords[LAYER_COUNT]; \n"
"void main() { \n"
" for (int i = 0; i < LAYER_COUNT; i++) { \n"
" fTexCoords[i] = (uLayerCrop[i].xy + vTexCoords * uLayerCrop[i].zw) / \n"
" vec2(textureSize(uLayerTextures[i], 0)); \n"
" } \n"
" vec2 scaledPosition = uViewport.xy + vPosition * uViewport.zw; \n"
" gl_Position = vec4(scaledPosition * vec2(2.0) - vec2(1.0), 0.0, 1.0); \n"
"} \n";
const GLchar *fragment_shader_source =
"\n"
"precision mediump float; \n"
"uniform sampler2D uLayerTextures[LAYER_COUNT]; \n"
"uniform float uLayerAlpha[LAYER_COUNT]; \n"
"in vec2 fTexCoords[LAYER_COUNT]; \n"
"out vec4 oFragColor; \n"
"void main() { \n"
" vec3 color = vec3(0.0, 0.0, 0.0); \n"
" float alphaCover = 1.0; \n"
" for (int i = 0; i < LAYER_COUNT; i++) { \n"
" vec4 texSample = texture(uLayerTextures[i], fTexCoords[i]); \n"
" float a = texSample.a * uLayerAlpha[i]; \n"
" color += a * alphaCover * texSample.rgb; \n"
" alphaCover *= 1.0 - a; \n"
" if (alphaCover <= 0.5/255.0) \n"
" break; \n"
" } \n"
" oFragColor = vec4(color, 1.0 - alphaCover); \n"
"} \n";
// clang-format on
int i, ret = 1;
GLint max_texture_images, status;
AutoGLShader vertex_shader, fragment_shader;
AutoGLProgram program;
std::string shader_log;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_images);
for (i = 1; i <= max_texture_images; i++) {
std::ostringstream layer_count_formatter;
layer_count_formatter << i;
std::string layer_count(layer_count_formatter.str());
const GLchar *shader_sources[3] = {shader_preamble, layer_count.c_str(),
NULL};
shader_sources[2] = vertex_shader_source;
vertex_shader = CompileAndCheckShader(GL_VERTEX_SHADER, 3, shader_sources,
ret ? &shader_log : NULL);
if (!vertex_shader.get()) {
if (ret)
ALOGE("Failed to make vertex shader:\n%s", shader_log.c_str());
break;
}
shader_sources[2] = fragment_shader_source;
fragment_shader = CompileAndCheckShader(
GL_FRAGMENT_SHADER, 3, shader_sources, ret ? &shader_log : NULL);
if (!fragment_shader.get()) {
if (ret)
ALOGE("Failed to make fragment shader:\n%s", shader_log.c_str());
break;
}
program = AutoGLProgram(glCreateProgram());
if (!program.get()) {
if (ret)
ALOGE("Failed to create program %s", GetGLError());
break;
}
glAttachShader(program.get(), vertex_shader.get());
glAttachShader(program.get(), fragment_shader.get());
glBindAttribLocation(program.get(), 0, "vPosition");
glBindAttribLocation(program.get(), 1, "vTexCoords");
glLinkProgram(program.get());
glDetachShader(program.get(), vertex_shader.get());
glDetachShader(program.get(), fragment_shader.get());
glGetProgramiv(program.get(), GL_LINK_STATUS, &status);
if (!status) {
if (ret) {
GLint log_length;
glGetProgramiv(program.get(), GL_INFO_LOG_LENGTH, &log_length);
std::string program_log(log_length, ' ');
glGetProgramInfoLog(program.get(), log_length, NULL, &program_log[0]);
ALOGE("Failed to link program: \n%s", program_log.c_str());
}
break;
}
ret = 0;
blend_programs->emplace_back(std::move(program));
}
return ret;
}
void RocketRenderInterface::bindTexture(uint32_t i_geometry_internal) const {
glActiveTexture(GL_TEXTURE0);
GetGLError();
glBindTexture(GL_TEXTURE_2D, _tex_id[i_geometry_internal]);
GetGLError();
}
// Called by Rocket when it wants to compile geometry it believes will be
// static for the forseeable future.
Rocket::Core::CompiledGeometryHandle RocketRenderInterface::CompileGeometry(
Rocket::Core::Vertex* vertices, int num_vertices, int* indices,
int num_indices, Rocket::Core::TextureHandle texture) {
//For now don't compile anything
//return (Rocket::Core::CompiledGeometryHandle) NULL;
unsigned int handle = (unsigned int)_vao.size()+1;
unsigned int new_vao, new_ibo, new_vbo;
std::vector<unsigned int> ind(num_indices);
std::vector<float> verts(num_vertices*2);
std::vector<float> colors(num_vertices*4);
std::vector<float> texCoords(num_vertices*2);
for(int i = 0; i < num_indices; i++) {
ind[i] = static_cast<unsigned int>(indices[i]);
}
for(int i = 0; i < num_vertices; i++) {
int vidx = 2*i;
verts[vidx] = vertices[i].position.x;
verts[vidx + 1] = vertices[i].position.y;
int cidx = 4*i;
colors[cidx + 0] = vertices[i].colour.red/255.0f;
colors[cidx + 1] = vertices[i].colour.green/255.0f;
colors[cidx + 2] = vertices[i].colour.blue/255.0f;
colors[cidx + 3] = vertices[i].colour.alpha/255.0f;
texCoords[vidx] = vertices[i].tex_coord.x;
texCoords[vidx + 1] = vertices[i].tex_coord.y;
}
glGenVertexArrays(1, &new_vao);
glBindVertexArray(new_vao);
GetGLError();
glGenBuffers(1, &new_ibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, new_ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
sizeof(unsigned int)*ind.size(),&ind[0], GL_STATIC_DRAW);
GetGLError();
glGenBuffers(1, &new_vbo);
glBindBuffer(GL_ARRAY_BUFFER, new_vbo);
glBufferData(GL_ARRAY_BUFFER,
(verts.size()+colors.size()+texCoords.size())*sizeof(float), NULL,
GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(float)*verts.size(), &verts[0]);
glBufferSubData(GL_ARRAY_BUFFER, sizeof(float)*verts.size(),
sizeof(float)*colors.size(), &colors[0]);
GetGLError();
if(texture > 0) {
// Load in the textured gui shader
glBufferSubData(GL_ARRAY_BUFFER,
sizeof(float)*(verts.size()+colors.size()),
sizeof(float)*texCoords.size(), &texCoords[0]);
GetGLError();
setVertexAttribPointerF(Vertex::LocationSlot::POSITION, 2, GL_FLOAT,
GL_FALSE, 0, BUFFER_OFFSET(0));
setVertexAttribPointerF(Vertex::LocationSlot::COLOR, 4, GL_FLOAT,
GL_FALSE, 0, BUFFER_OFFSET(sizeof(float)*verts.size()));
setVertexAttribPointerF(Vertex::LocationSlot::UV, 2, GL_FLOAT,
GL_FALSE, 0,
BUFFER_OFFSET(sizeof(float)*(verts.size()+colors.size())));
_shader_types.push_back(RS_T_WITH_TEXTURE);
} else {
_shader_types.push_back(RS_T_NO_TEXTURE);
setVertexAttribPointerF(Vertex::LocationSlot::POSITION, 2, GL_FLOAT,
GL_FALSE, 0, BUFFER_OFFSET(0));
setVertexAttribPointerF(Vertex::LocationSlot::COLOR, 4, GL_FLOAT,
GL_FALSE, 0, BUFFER_OFFSET(sizeof(float)*verts.size()));
}
// Now store away the indices to the geometry objects
_vao.push_back(new_vao);
_ibo.push_back(new_ibo);
_vbo.push_back(new_vbo);
_index_size.push_back((unsigned int)ind.size());
_tex_id.push_back(static_cast<unsigned int>(texture));
// Unbind the VAO just in case anyone makes changes to it.
glBindVertexArray(0);
// std::cout << "Compiled libRocket geometry " << new_ibo << " "
// << new_vbo << " " << new_vao << std::endl;
return handle;
}
