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#include <XT/xtEngine.h>
XT_CameraFPS cam;
XT_Sky sky;
void Draw();
using namespace std;
Uint32 last_time,current_time,elapsed_time; //for time animation
const GLsizeiptr PositionSize = 6 * 2 * sizeof(GLfloat);
/*static const GLfloat PositionData[] =
{
-1.0f,-1.0f,
1.0f,-1.0f,
1.0f, 1.0f,
1.0f, 1.0f,
-1.0f, 1.0f,
-1.0f,-1.0f,
};*/
vec2 Vertex[6];
const int BufferSize = 2;
GLuint BufferName[BufferSize];
GLsizei VertexCount = 6;
enum
{
POSITION_OBJECT = 0,
COLOR_OBJECT = 1
};
int main(int argc, char *argv[])
{
//Init
XT_Init("VBO test",800,600,false);
SDL_Event event;
//VBO
glGenBuffers(BufferSize, BufferName);
Vertex[0]=vec2(-1.0f,-1.0f);
Vertex[1]=vec2( 1.0f,-1.0f);
Vertex[2]=vec2( 1.0f, 1.0f);
Vertex[3]=vec2( 1.0f, 1.0f);
Vertex[4]=vec2(-1.0f, 1.0f);
Vertex[5]=vec2(-1.0f,-1.0f);
//Sky
sky.SetSize(1000000);
sky.SetBack("Data/sky/01/Back.jpg");
sky.SetFront("Data/sky/01/Front.jpg");
sky.SetBottom("Data/sky/01/Bottom.jpg");
sky.SetTop("Data/sky/01/Top.jpg");
sky.SetLeft("Data/sky/01/Left.jpg");
sky.SetRight("Data/sky/01/Right.jpg");
//Cam
cam.speed=200;
//Boucle principal
while(1)
{
SDL_PollEvent(&event);
switch(event.type)
{
case SDL_QUIT:
XT_Quit();
exit(0);
break;
case SDL_KEYDOWN:
switch (event.key.keysym.sym)
{
case SDLK_ESCAPE:
XT_Quit();
exit(0);
break;
case SDLK_p:
XT_Screenshot("screen.bmp");
break;
}
break;
}
current_time = SDL_GetTicks();
elapsed_time = current_time - last_time;
last_time = current_time;
//Action
cam.GetEvent(&event,elapsed_time);
//DRAW
Draw();
glFlush();
SDL_GL_SwapBuffers();
}
return 0;
}
void Draw()
{
XT_ClearBuffer();
XT_BeginScene();
//Cam
cam.Look();
//Sky
sky.Look();
//VBO
glBindBuffer(GL_ARRAY_BUFFER, BufferName[COLOR_OBJECT]);
glColorPointer(3, GL_UNSIGNED_BYTE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, BufferName[POSITION_OBJECT]);
glBufferData(GL_ARRAY_BUFFER, PositionSize, Vertex, GL_STREAM_DRAW);
glVertexPointer(2, GL_FLOAT, 0, 0);
glEnableClientState(GL_VERTEX_ARRAY);
glDrawArrays(GL_TRIANGLES, 0, VertexCount);
glDisableClientState(GL_VERTEX_ARRAY);
XT_EndScene();
} |
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