static unsafe void RenderThread(Sample sample)
{
// initialize the renderer
Bgfx.Init(RendererBackend.OpenGL, callbackHandler: new CallbackHandler());
Bgfx.Reset(sample.WindowWidth, sample.WindowHeight, ResetFlags.MSAA16x | ResetFlags.Capture);
// enable debug text
Bgfx.SetDebugFeatures(DebugFeatures.DisplayText);
// set view 0 clear state
Bgfx.SetViewClear(0, ClearTargets.Color | ClearTargets.Depth, 0x303030ff);
Bgfx.SetViewRect(0, 0, 0, sample.WindowWidth, sample.WindowHeight);
// create vertex and index buffers
var vbh = Cube.CreateVertexBuffer();
var ibh = Cube.CreateIndexBuffer();
// load shaders
var program = ResourceLoader.LoadProgram("vs_callback", "fs_callback");
// 5 seconds of 60 Hz video
var time = 0.0f;
for (int frame = 0; frame < 300; frame++)
{
// write some debug text
Bgfx.DebugTextClear();
Bgfx.DebugTextWrite(0, 1, DebugColor.White, DebugColor.Blue, "SharpBgfx/Samples/07-Callback");
Bgfx.DebugTextWrite(0, 2, DebugColor.White, DebugColor.Cyan, "Description: Implementing application specific callbacks for taking screen shots,");
Bgfx.DebugTextWrite(13, 3, DebugColor.White, DebugColor.Cyan, "caching OpenGL binary shaders, and video capture.");
Bgfx.DebugTextWrite(0, 4, DebugColor.White, DebugColor.Cyan, "Frame: {0}", frame);
// view transforms
var viewMatrix = Matrix4x4.CreateLookAt(new Vector3(0.0f, 0.0f, 35.0f), Vector3.Zero, Vector3.UnitY);
var projMatrix = Matrix4x4.CreatePerspectiveFieldOfView((float)Math.PI / 3, (float)sample.WindowWidth / sample.WindowHeight, 0.1f, 100.0f);
Bgfx.SetViewTransform(0, &viewMatrix.M11, &projMatrix.M11);
// fixed frame rate
time += 1.0f / 60.0f;
// submit 11x11 cubes
for (int y = 0; y < 11; y++)
{
for (int x = 0; x < 11 - y; x++)
{
// model matrix
var transform = Matrix4x4.CreateFromYawPitchRoll(time + x * 0.21f, time + y * 0.37f, 0.0f);
transform.M41 = -15.0f + x * 3.0f;
transform.M42 = -15.0f + y * 3.0f;
transform.M43 = 0.0f;
Bgfx.SetTransform(&transform.M11);
// set pipeline states
Bgfx.SetVertexBuffer(vbh);
Bgfx.SetIndexBuffer(ibh);
Bgfx.SetRenderState(RenderState.Default);
// submit primitives
Bgfx.Submit(0, program);
}
}
// take a screenshot at frame 150
if (frame == 150)
{
Bgfx.SaveScreenShot("frame150");
}
// advance to next frame
Bgfx.Frame();
}
// clean up
ibh.Dispose();
vbh.Dispose();
program.Dispose();
Bgfx.Shutdown();
}