private static void OnRenderFrame()
{
watch.Stop();
float deltaTime = (float)watch.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
watch.Restart();
// set up the viewport and clear the previous depth and color buffers
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// make sure the shader program and texture are being used
Gl.UseProgram(program.ProgramID);
Gl.BindTexture(particleTexture);
// update our particle list
for (int i = 0; i < particles.Count; i++)
{
particles[i].Update(deltaTime);
//if (particles[i].Life < 0) particles[i] = new Particle(Vector3.Zero);
if (particles[i].Life < 0)
{
particles[i] = new Particle(new Vector3((float)generator.NextDouble() * 200 - 100, 6, 0));
}
particlePositions[i] = particles[i].Position;
}
// delete our previous particle positions (if applicable) and then create a new VBO
if (particleVertices != null)
{
particleVertices.Dispose();
}
particleVertices = new VBO <Vector3>(particlePositions);
// bind the VBOs to their shader attributes
Gl.BindBufferToShaderAttribute(particleVertices, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(particleColors, program, "vertexColor");
Gl.BindBuffer(particlePoints);
// enable point sprite mode (which enables the gl_PointCoord value)
Gl.Enable(EnableCap.PointSprite);
Gl.DrawElements(BeginMode.Points, particlePoints.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
Gl.Disable(EnableCap.PointSprite);
// bind the font program as well as the font texture
Gl.UseProgram(fontProgram.ProgramID);
Gl.BindTexture(font.FontTexture);
// draw the tutorial information, which is static
information.Draw();
Glut.glutSwapBuffers();
}
private static void OnRenderFrame()
{
watch.Stop();
float deltaTime = (float)watch.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
watch.Restart();
// set up the viewport and clear the previous depth and color buffers
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// perform rotation of the cube depending on the keyboard state
if (autoRotate)
{
xangle += deltaTime / 2;
yangle += deltaTime;
}
if (right)
{
yangle += deltaTime;
}
if (left)
{
yangle -= deltaTime;
}
if (up)
{
xangle -= deltaTime;
}
if (down)
{
xangle += deltaTime;
}
// make sure the shader program and texture are being used
Gl.UseProgram(program);
Gl.ActiveTexture(TextureUnit.Texture1);
Gl.BindTexture(brickNormals);
Gl.ActiveTexture(TextureUnit.Texture0);
Gl.BindTexture(brickDiffuse);
// set up the model matrix and draw the cube
program["model_matrix"].SetValue(Matrix4.CreateRotationY(yangle) * Matrix4.CreateRotationX(xangle));
program["enable_lighting"].SetValue(lighting);
program["enable_mapping"].SetValue(normalMapping);
Gl.BindBufferToShaderAttribute(cube, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(cubeNormals, program, "vertexNormal");
Gl.BindBufferToShaderAttribute(cubeTangents, program, "vertexTangent");
Gl.BindBufferToShaderAttribute(cubeUV, program, "vertexUV");
Gl.BindBuffer(cubeTriangles);
Gl.DrawElements(BeginMode.Triangles, cubeTriangles.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
// bind the font program as well as the font texture
Gl.UseProgram(fontProgram.ProgramID);
Gl.BindTexture(font.FontTexture);
// draw the tutorial information, which is static
information.Draw();
Glut.glutSwapBuffers();
}
