I got some time and I've read about VBO and that's what I got :
http://img64.imageshack.us/img64/5733/fps8.jpg
Ok, it's much better than before. It's compiled on Release. I uses VBO (probably, if everthing's OK) and glDrawArrays to draw.
Here's drawing code. Please give me advice how to optimize it. I wanted with terrain ... uh few thousand FPS, is it real ?
void DrawVBO (void)
{
int i;
CVert* m_pVertices;
CTexCoord* m_pTexCoords;
unsigned int m_nTextureId;
m_pVertices = NULL;
m_pTexCoords = NULL;
m_nVertexCount = 0;
m_nVBOVertices = m_nVBOTexCoords = m_nTextureId = 0;
if( IsExtensionSupported( "GL_ARB_vertex_buffer_object" ) )
{
// Pobierz wskaźniki na funkcje OpenGL
glGenBuffersARB = (PFNGLGENBUFFERSARBPROC) wglGetProcAddress("glGenBuffersARB");
glBindBufferARB = (PFNGLBINDBUFFERARBPROC) wglGetProcAddress("glBindBufferARB");
glBufferDataARB = (PFNGLBUFFERDATAARBPROC) wglGetProcAddress("glBufferDataARB");
glDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC)
wglGetProcAddress("glDeleteBuffersARB");
}
todrawquads=0;
nIndex=0;
// my function counting how many quads I will draw
for (i=0;i<MAX_CHUNKS_LOADED;i++)
{
if (chunks_loaded[i].created==1)
{
countquads(i);
}
}
m_nVertexCount=4*todrawquads;
m_pVertices = new CVec[m_nVertexCount];
m_pTexCoords = new CTexCoord[m_nVertexCount];
// another my function adding every quad which i'm going to draw (its verticles) to array
for (i=0;i<MAX_CHUNKS_LOADED;i++)
{
if (chunks_loaded[i].created==1)
{
addchunktodraw(i,m_pVertices,m_pTexCoords);
}
}
glClearColor (1,1,1, 0.0);
glColor3f(1,1,1);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glLoadIdentity (); // Reset The Modelview Matrix
fps++;
// Camera settings.
//gluLookAt (zom, zom, zom, 0.0, 0.0, 0.0, 0, 0, 1);
gluLookAt (zoom, zoom, zoom, 0.0, 0.0, 0.0, 0, 0, 1);
glRotatef((rot_x / 180 * 3.141592654f),1,0,0);
glRotatef((rot_y / 180 * 3.141592654f),0,1,0);
glRotatef((rot_z / 180 * 3.141592654f),0,0,1);
//m_nTextureId = t_terrain;
// Generate And Bind The Vertex Buffer
glGenBuffersARB( 1, &m_nVBOVertices ); // Get A Valid Name
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOVertices ); // Bind The Buffer
// Load The Data
glBufferDataARB( GL_ARRAY_BUFFER_ARB, m_nVertexCount*3*sizeof(float), m_pVertices, GL_STATIC_DRAW_ARB );
// Generate And Bind The Texture Coordinate Buffer
glGenBuffersARB( 1, &m_nVBOTexCoords ); // Get A Valid Name
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOTexCoords ); // Bind The Buffer
// Load The Data
glBufferDataARB( GL_ARRAY_BUFFER_ARB, m_nVertexCount*2*sizeof(float), m_pTexCoords, GL_STATIC_DRAW_ARB );
// Enable Pointers
glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
glEnableClientState( GL_TEXTURE_COORD_ARRAY ); // Enable Texture Coord Arrays
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOVertices );
glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOTexCoords );
glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffe
glDrawArrays( GL_QUADS, 0, m_nVertexCount); // Draw All Of The Triangles At Once
glDisableClientState( GL_VERTEX_ARRAY ); // Disable Vertex Arrays
glDisableClientState( GL_TEXTURE_COORD_ARRAY ); // Disable Texture Coord Arrays
liniergb();
glutSwapBuffers();
delete [] m_pVertices; m_pVertices = NULL;
delete [] m_pTexCoords; m_pTexCoords = NULL;
}
So what I can do with it ? (Code above is main draw function)
I've moved this :
if( IsExtensionSupported( "GL_ARB_vertex_buffer_object" ) )
{
// Pobierz wskaźniki na funkcje OpenGL
glGenBuffersARB = (PFNGLGENBUFFERSARBPROC) wglGetProcAddress("glGenBuffersARB");
glBindBufferARB = (PFNGLBINDBUFFERARBPROC) wglGetProcAddress("glBindBufferARB");
glBufferDataARB = (PFNGLBUFFERDATAARBPROC) wglGetProcAddress("glBufferDataARB");
glDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC)
wglGetProcAddress("glDeleteBuffersARB");
}
to my main function. Probably no improvement.
Now , also I can see that it's eating memory. Every few seconds program memory usage is rising up more and more ... What's wrong ? What I'm not deleting ?
Ok , thanks sooooo much. I've moved some code outside draw function and ... much more fps ! Thanks so much !
http://img197.imageshack.us/img197/5193/fpsfinal.jpg
It's 640x640 blocks (so 40 times bigger) map with 650'000 quads (about 70 times more) and still ~170 fps. Great ! And no memory leaks. Thanks again !
Your DrawVBO function should contain only:
glClearColor (1,1,1, 0.0);
glColor3f(1,1,1);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glLoadIdentity (); // Reset The Modelview Matrix
fps++;
// Camera settings.
//gluLookAt (zom, zom, zom, 0.0, 0.0, 0.0, 0, 0, 1);
gluLookAt (zoom, zoom, zoom, 0.0, 0.0, 0.0, 0, 0, 1);
glRotatef((rot_x / 180 * 3.141592654f),1,0,0);
glRotatef((rot_y / 180 * 3.141592654f),0,1,0);
glRotatef((rot_z / 180 * 3.141592654f),0,0,1);
// Enable Pointers
glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
glEnableClientState( GL_TEXTURE_COORD_ARRAY ); // Enable Texture Coord Arrays
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOVertices );
glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
glBindBufferARB( GL_ARRAY_BUFFER_ARB, m_nVBOTexCoords );
glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffe
glDrawArrays( GL_QUADS, 0, m_nVertexCount); // Draw All Of The Triangles At Once
glDisableClientState( GL_VERTEX_ARRAY ); // Disable Vertex Arrays
glDisableClientState( GL_TEXTURE_COORD_ARRAY ); // Disable Texture Coord Arrays
liniergb();
glutSwapBuffers();
You need to move the rest to separate function called only once at start-up (or when the terrain changes).