All the engine code can be found here: https://github.com/Jevi/SDL_GL_ENGINE
In my game loop I call beginDraw() and endDraw() before and after I draw everything to the screen.
void graphics::SDL_GL_RenderText(float x1, float y1, int width, int height, const char* text, int ptsize, const char* ttfLoc, int r, int g, int b){
SDL_Surface* temp;
SDL_Surface* temp2;
SDL_Rect rect;
TTF_Font* font;
SDL_Color textColor;
unsigned int texture;
font = TTF_OpenFont( ttfLoc , ptsize );
textColor.r = r;
textColor.g = g;
textColor.b = b;
temp = TTF_RenderText_Blended( font, text, textColor );
// width = nextpoweroftwo(width);
// height = nextpoweroftwo(height);
temp2 = SDL_CreateRGBSurface(0, width, height, 32, r, g, b, 0);
SDL_BlitSurface(temp, 0, temp2, 0);
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, temp2->w, temp2->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, temp2->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
/* prepare to render our texture */
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
glColor3f(1.0f, 1.0f, 1.0f);
/* Draw a quad at location */
glBegin(GL_QUADS);
glTexCoord2d(0,0);
glVertex2f(x1, y1);
glTexCoord2d(1,0);
glVertex2f(x1 + temp2->w, y1);
glTexCoord2d(1,1);
glVertex2f(x1 + temp2->w, y1 + temp2->h);
glTexCoord2d(0,1);
glVertex2f(x1, y1 + temp2->h);
glEnd();
glFinish();
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
SDL_FreeSurface(temp);
SDL_FreeSurface(temp2);
TTF_CloseFont(font);
glDeleteTextures(1, &texture);
}
void graphics::GL_BeginDraw(){
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix(); //Start rendering phase
glOrtho(0,width,height,0,-1,1); //Set the matrix
}
void graphics::GL_EndDraw(){
glPopMatrix(); //End rendering phase
SDL_GL_SwapBuffers();
glFinish();
}
P.S: I'm going to make another post for this but I might as well ask this also if you guys are already looking at my code. I have been noticing some memory issues with the engine. In task manager the memory allocated to my program is constantly climbing since its starts at around 11000 K. Help with that would also be appreciated. Thanks
Edited by Jevi, 16 July 2012 - 04:23 PM.






