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VR-demos
Commit 7aed483c authored by Ruben Garcia Hernndez's avatar Ruben Garcia Hernndez
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Add support for transparency in CAVE

parent c505ddc5
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Showing with 100 additions and 24 deletions
CAVE/NOMADCaveT/src/defines.h
View file @ 7aed483c
......@@ -7,4 +7,6 @@
#define PATHSIZE 256
#define ZLAYERS 8
#endif
CAVE/NOMADCaveT/src/main.cpp
View file @ 7aed483c
......@@ -54,7 +54,8 @@ typedef std::chrono::high_resolution_clock Clock;
class sceneManager{
public:
sceneManager(m3d::Renderer* ren, synchlib::renderNode* node, const char *NOMADconfigFile);
sceneManager(m3d::Renderer* ren, synchlib::renderNode* node,
const char *NOMADconfigFile, const unsigned int geo[2]);
~sceneManager();
void displayFunction();
void keyboardFunction(char key, int x, int y);
......@@ -103,18 +104,24 @@ configFile=f;
}
int error=0;
GLuint textures[2]; // white, atoms
GLuint textDepthPeeling[ZLAYERS+2];
GLuint peelingFramebuffer;
unsigned int geo[0]; //window width, height
//if no tesselation is available, we still need the tess atoms for the trajectories!
GLuint *AtomTVAO=nullptr, *AtomTBuffer=nullptr,
*AtomVAO=nullptr, *AtomBuffer=nullptr, *AtomIndices=nullptr,//[2], atoms, extraatoms
UnitCellVAO, UnitCellBuffer, UnitCellIndexBuffer;
GLuint AtomsP, UnitCellP; // framework does not provide support for tesselation and provides many things we don't need.
GLint AtomMatrixLoc, UnitCellMatrixLoc, UnitCellColourLoc;
GLuint *AtomTVAO=nullptr, *AtomTBuffer=nullptr,
*AtomVAO=nullptr, *AtomBuffer=nullptr, *AtomIndices=nullptr,//[2], atoms, extraatoms
UnitCellVAO, UnitCellBuffer, UnitCellIndexBuffer;
GLuint AtomsP, UnitCellP;
GLint AtomMatrixLoc, UnitCellMatrixLoc, UnitCellColourLoc;
GLuint TransP=0, BlendP=0;
GLint TransMatrixLoc=-1;
bool hasTess=true;
GLuint *ISOVAO=nullptr/*[ISOS*TIMESTEPS]*/, *ISOBuffer=nullptr/*[ISOS*TIMESTEPS]*/,
*ISOIndices=nullptr/*[ISOS*TIMESTEPS]*/;
GLuint ISOP;
GLint ISOMatrixLoc;
GLuint BlendVAO=0, BlendBuffer=0, BlendIndices=0;
int *numISOIndices=nullptr/*[ISOS*TIMESTEPS]*/;
void RenderAtoms(const float *m);
......@@ -126,13 +133,16 @@ void RenderIsos(const glm::mat4 eyeViewProjection, int curDataPos);
sceneManager::sceneManager(m3d::Renderer* ren, synchlib::renderNode* node,
const char *c){
const char *c, const unsigned int geometry[2]){
GLenum err;
while ((err = glGetError()) != GL_NO_ERROR) {
std::cerr << "construktor 0: "<<__FUNCTION__<<" OpenGL error " << err << std::endl;
}
geo[0]=geometry[0];
geo[1]=geometry[1];
m_ren = ren;// m_th = th;
m_node = node;
if (c)
......@@ -161,6 +171,8 @@ GLenum err;
}
glGenTextures(2, textures);
glGenTextures(2+ZLAYERS, textDepthPeeling);
//white
unsigned char data2[4]={255,255,255,255}; //white texture for non-textured meshes
glBindTexture(GL_TEXTURE_2D, textures[0]);
......@@ -196,6 +208,9 @@ glGenTextures(2, textures);
error=-403;
}
bool er;
e=SetupAtoms(&AtomTVAO, &AtomTBuffer);
if (e!=GL_NO_ERROR) {
eprintf ("SetupAtoms error %d", e);
......@@ -217,6 +232,21 @@ glGenTextures(2, textures);
//now isosurfaces
if (ISOS) {
er=::SetupDepthPeeling(geo[0], geo[1], ZLAYERS,
textDepthPeeling, &peelingFramebuffer);
if (!er) {
eprintf("Error setting up DepthPeeling\n");
error=-407;
}
if (GL_NO_ERROR!=(e=PrepareISOTransShader (&TransP,
&TransMatrixLoc, &BlendP)))
{
eprintf( "Error Preparing Transparency shader, %d\n", e );
error=-408;
}
SetupBlending(&BlendVAO, &BlendBuffer, &BlendIndices);
PrepareISOShader(&ISOP, &ISOMatrixLoc);
std::vector<float> vertices;
......@@ -346,8 +376,11 @@ m_uploading->quit();
void sceneManager::glDraw(glm::mat4 pvmat, glm::mat4 viewMat, int curDataPos,
const SelectedPoints& selectedPoints) {
GLenum err;
if ((err = glGetError()) != GL_NO_ERROR)
eprintf ("begin of glDraw, error %d\n", err);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
while ((err = glGetError()) != GL_NO_ERROR) {
std::cerr << "disp vor draw: "<<__FUNCTION__<<" OpenGL error " << err << std::endl;
......@@ -385,6 +418,10 @@ if (has_abc) {
if (ISOS)
RenderIsos(pvmat*st, curDataPos);
if ((err = glGetError()) != GL_NO_ERROR)
eprintf ("end of glDraw, error %d\n", err);
}
void sceneManager::displayFunction(){
......@@ -523,8 +560,12 @@ int main(int argc, char** argv){
synchlib::renderNode* node = new synchlib::renderNode(file,argc, argv);
std::cout<<conf.m_wall_conf[ownIP.str()].wall_geo[0]<<" "<<conf.m_wall_conf[ownIP.str()].wall_geo[1]<<std::endl;
ren->createWindow("NOMADCaveT",conf.m_wall_conf[ownIP.str()].wall_geo[0],conf.m_wall_conf[ownIP.str()].wall_geo[1]);
const unsigned int geo[2]={static_cast<unsigned int>(conf.m_wall_conf[ownIP.str()].wall_geo[0]),
static_cast<unsigned int>(conf.m_wall_conf[ownIP.str()].wall_geo[1])};
std::cout<<geo[0]<<" "<<geo[1]<<std::endl;
ren->createWindow("NOMADCaveT",geo[0],geo[1]);
//http://stackoverflow.com/questions/8302625/segmentation-fault-at-glgenvertexarrays-1-vao
glewExperimental = GL_TRUE;
GLenum err = glewInit();
......@@ -538,7 +579,7 @@ int main(int argc, char** argv){
{
sceneManager sceneM(ren,node, argv[4]);
sceneManager sceneM(ren,node, argv[4], geo);
std::shared_ptr<synchlib::SynchObject<int> > currentDataPosSyncher = synchlib::SynchObject<int>::create();
......@@ -819,20 +860,46 @@ float t[16];
for (int i=0;i<4;i++)
for (int j=0;j<4;j++)
t[j*4+i]=eyeViewProjection[j][i];
glUseProgram(ISOP);
glUniformMatrix4fv(ISOMatrixLoc, 1, GL_FALSE, t);
if ((e = glGetError()) != GL_NO_ERROR)
eprintf("Gl error after glUniform4fv 1 RenderUnitCell: %d\n", e);
if (curDataPos!=ISOS) {
glDisable(GL_BLEND);
glUseProgram(ISOP);
glUniformMatrix4fv(ISOMatrixLoc, 1, GL_FALSE, t);
if ((e = glGetError()) != GL_NO_ERROR)
eprintf("Gl error after glUniform4fv 1 RenderUnitCell: %d\n", e);
glBindVertexArray(ISOVAO[m_oldTime*ISOS+curDataPos]);
glDrawElements(GL_TRIANGLES,numISOIndices[m_oldTime*ISOS+curDataPos] , GL_UNSIGNED_INT, 0);
} else {
for (int i=0;i<ISOS;i++) {
glBindVertexArray(ISOVAO[m_oldTime*ISOS+i]);
glDrawElements(GL_TRIANGLES,numISOIndices[m_oldTime*ISOS+i] , GL_UNSIGNED_INT, 0);
} else {//transparency
glDisable(GL_BLEND);
glDepthMask(GL_TRUE);
//do depth peeling
CleanDepthTexture(textDepthPeeling[0]);
GLint dfb;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &dfb);
if ((e = glGetError()) != GL_NO_ERROR)
eprintf("Gl error RenderIsos, before zl loop: %d\n", e);
for (int zl = 0; zl < ZLAYERS; zl++) {
EnableDepthFB(zl, TransP,
peelingFramebuffer, textDepthPeeling);
glUniformMatrix4fv(TransMatrixLoc, 1, GL_FALSE, t);
for (int i=0;i<ISOS;i++) {
glBindVertexArray(ISOVAO[m_oldTime*ISOS+i]);
glDrawElements(GL_TRIANGLES,numISOIndices[m_oldTime*ISOS+i] , GL_UNSIGNED_INT, 0);
}
}
glUseProgram(BlendP);
glBindFramebuffer(GL_FRAMEBUFFER, dfb);
glBindVertexArray(BlendVAO);
BlendTextures(textDepthPeeling, ZLAYERS);
//old code for no transparency
// for (int i=0;i<ISOS;i++) {
// glBindVertexArray(ISOVAO[m_oldTime*ISOS+i]);
// glDrawElements(GL_TRIANGLES,numISOIndices[m_oldTime*ISOS+i] , GL_UNSIGNED_INT, 0);
// }
}
if ((e = glGetError()) != GL_NO_ERROR)
eprintf("Gl error after RenderIsos: %d\n", e);
}
void sceneManager::RenderUnitCell(const glm::mat4 eyeViewProjection)
......
CAVE/NOMADCaveT/src/main_server.cpp
View file @ 7aed483c
......@@ -293,7 +293,7 @@ int main( int argc, char **argv )
{
if(argc < 3){
std::cout<<"Not enough arguments! Start with "<<argv[0]<<
" <path to mlib configfile> <path to NOMAD configfile"<<std::endl;
" <path to mlib configfile> <path to NOMAD configfile>"<<std::endl;
exit(0);
}
std::string file =argv[1];
......
NOMADVRLib/IsoShaders.cpp
View file @ 7aed483c
......@@ -109,14 +109,13 @@ const char *const IsoBlendShaders [] = {"Iso Transparent Blend",
#else
"#version 300 es\n"
#endif
"uniform mat4 matrix;\n"
"layout(location = 0) in vec3 position;\n"
"layout(location = 1) in vec2 v2TexCoordsIn;\n"
"out vec2 v2TexCoord;\n"
"void main()\n"
"{\n"
" v2TexCoord = v2TexCoordsIn;\n"
" gl_Position = matrix * vec4(position, 1);\n"
" gl_Position = vec4(position, 1);\n"
"}\n",
//fragment shader
"#version 410 core\n"
......
NOMADVRLib/IsosurfacesGL.cpp
View file @ 7aed483c
......@@ -239,7 +239,7 @@ GLenum PrepareISOShader (GLuint *p, GLint *mat) {
return glGetError();
}
GLenum PrepareISOTransShader (GLuint *p, GLint *mat) {
GLenum PrepareISOTransShader (GLuint *p, GLint *mat, GLuint *b) {
*p= CompileGLShader(
IsoTransparentShaders[SHADERNAME],
IsoTransparentShaders[SHADERVERTEX],
......@@ -252,6 +252,12 @@ GLenum PrepareISOTransShader (GLuint *p, GLint *mat) {
eprintf( "Unable to find matrix uniform in ISO shader\n" );
}
*b=CompileGLShader(
IsoBlendShaders[SHADERNAME],
IsoBlendShaders[SHADERVERTEX],
IsoBlendShaders[SHADERFRAGMENT],
IsoBlendShaders[SHADERTESSEVAL]
);
return glGetError();
}
......@@ -388,6 +394,7 @@ GLenum SetupBlending (GLuint *vao, GLuint *vertex, GLuint *indices)
if ((e = glGetError()) != GL_NO_ERROR)
eprintf("Gl error: %d, %s, l %d\n", e, gluErrorString(e), __LINE__);
glBindVertexArray(0);
return e;
}
......
NOMADVRLib/IsosurfacesGL.h
View file @ 7aed483c
......@@ -22,8 +22,9 @@ GLenum PrepareGLiso (GLuint vao, GLuint vertbuffer, const std::vector<float> &ve
#endif
);
GLenum SetupBlending (GLuint *vao, GLuint *vertex, GLuint *indices);
GLenum PrepareISOShader (GLuint *p, GLint *mat);
GLenum PrepareISOTransShader (GLuint *p, GLint *mat);
GLenum PrepareISOTransShader (GLuint *p, GLint *mat, GLuint *b);
#if defined(WIN32) || defined (CAVE)
bool SetupDepthPeeling(int renderWidth, int renderHeight, int zlayers, GLuint *textures /*[zlayers+2 (2 depth, zlayers colour)]*/,
GLuint *peelingFramebuffer);
......
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