virtual void OnKeyPressed(KEY key)
{
float offsetStep = 0.1f * m_scale;
const float scaleStep = 0.4f;
switch (key)
{
case KEY::KEY_ESCAPE:
m_backend->Terminate();
break;
case KEY::KEY_UP:
m_offset.y -= offsetStep;
m_shaderProgram->SetOffset(m_offset);
break;
case KEY::KEY_DOWN:
m_offset.y += offsetStep;
m_shaderProgram->SetOffset(m_offset);
break;
case KEY::KEY_LEFT:
m_offset.x += offsetStep;
m_shaderProgram->SetOffset(m_offset);
break;
case KEY::KEY_RIGHT:
m_offset.x -= offsetStep;
m_shaderProgram->SetOffset(m_offset);
break;
case KEY::KEY_q:
m_scale += scaleStep;
m_shaderProgram->SetScale(m_scale);
break;
case KEY::KEY_w:
m_scale -= scaleStep;
m_shaderProgram->SetScale(m_scale);
break;
case KEY::KEY_s:
m_pause = !m_pause;
break;
}
}
virtual void OnMouseMove(int x, int y)
{
if (m_keyLeftPressed)
{
//Two is a magic!
float wk = 1.0f / m_win_h * m_scale * 2.0f;
float hk = 1.0f / m_win_h * m_scale * 2.0f;
m_offset.x -= (m_mouse_x - x)*wk;
m_offset.y += (m_mouse_y - y)*hk;
m_shaderProgram->SetOffset(m_offset);
m_mouse_x = x;
m_mouse_y = y;
}
}
bool Init(int argc, char** argv)
{
GetCLDev();
m_backend->Init(argc, argv);
m_aspectRatio = m_win_h / (float)m_win_w;
if (!m_backend->CreateWin(m_win_w, m_win_h, false, "OpenGL test app"))
{
fprintf(stderr, "Faild to create window");
return false;
}
GLenum res = glewInit();
if (res != GLEW_OK) {
fprintf(stderr, "Error: '%s'\n", glewGetErrorString(res));
return false;
}
if (!InitCL())
{
return false;
}
wglSwapIntervalEXT(0);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//glFrontFace(GL_CW);
//glCullFace(GL_BACK);
//glEnable(GL_CULL_FACE);
//glEnable(GL_DEPTH_TEST);
m_bodies.push_back(Body(Vector2f(-0.8f, -0.8f), Vector2f(0.021f, 0.0f), Vector2f(-0.05f, 0.11f), Vector2f(0.0f, 0.0f)));
m_bodies.push_back(Body(Vector2f(0.8f, 0.8f), Vector2f(0.021f, 0.0f), Vector2f(0.05f, -0.11f), Vector2f(0.0f, 0.0f)));
m_bodies.push_back(Body(Vector2f(-0.8f, 0.8f), Vector2f(0.014f, 0.0f), Vector2f(0.01f, 0.1f), Vector2f(0.0f, 0.0f)));
m_bodies.push_back(Body(Vector2f(0.8f, -0.8f), Vector2f(0.016f, 0.0f), Vector2f(0.01f, 0.1f), Vector2f(0.0f, 0.0f)));
m_bodies.push_back(Body(Vector2f(0.0f, 0.0f), Vector2f(0.3f, 0.0f), Vector2f(0.0f, 0.0f), Vector2f(0.0f, 0.0f)));
for (int i = 0; i < 5000; ++i)
{
m_bodies.push_back(Body(Vector2f((rand() % 100000) / 1000.0f - 1.0f, (rand() % 100000) / 1000.0f - 1.0f), Vector2f(rand() % 300 / 1000.0f, 0.0f), Vector2f((rand() % 2000) / 1000.0f - 1.0f, (rand() % 2000) / 1000.0f - 1.0f), Vector2f(0.0f, 0.0f)));
}
glGenBuffers(1, &m_VB);
glBindBuffer(GL_ARRAY_BUFFER, m_VB);
glBufferData(GL_ARRAY_BUFFER, sizeof(Body) * m_bodies.size(), &m_bodies[0], GL_DYNAMIC_DRAW);
cl_int ret = 0;
m_clVB = clCreateFromGLBuffer(m_clContext, CL_MEM_READ_WRITE, m_VB, &ret);
clErrNoAssert(ret);
ret = clSetKernelArg(m_kernelCalcForces, 0, sizeof(cl_mem), (void *)&m_clVB);
clErrNoAssert(ret);
ret = clSetKernelArg(m_kernelMove, 0, sizeof(cl_mem), (void *)&m_clVB);
clErrNoAssert(ret);
m_last_time_dt = 0;
m_time_shift = 1;
m_dt = 0.00001f;
m_shaderProgram = new CommonShaderProgram("vertexshader.txt", "pixelshader.txt", "geometryshader.txt");
m_shaderProgram->Compile();
m_shaderProgram->Apply();
m_shaderProgram->SetScale(m_scale);
m_shaderProgram->SetOffset(m_offset);
m_shaderProgram->SetAspectRatio(m_aspectRatio);
return true;
}