public void Init(IntPtr windowHandle, Size size)
{
if (!CreateEGLContext())
{
Debug.WriteLine("Failed to create EGL context.");
return;
}
var nativeWindow = windowHandle;
if (!CreateEGLSurface(nativeWindow))
{
Debug.WriteLine("Failed to create EGL surface.");
return;
}
OpenGLMaterial.InitCommonMaterials();
// Other state
GL.Disable(GL.GL_CULL_FACE);
GL.Disable(GL.GL_DEPTH_TEST);
GL.DepthFunc(GL.GL_NEVER);
GL.Enable(GL.GL_SCISSOR_TEST);
Utility.CheckGLESError();
}
public void Init(IntPtr windowHandle, Size size)
{
CreateOpenGLContext(windowHandle);
OpenGLMaterial.InitCommonMaterials();
ImGui.Development.SpecialMesh.Init();
// Other state
GL.Enable(GL.GL_MULTISAMPLE);
GL.Disable(GL.GL_CULL_FACE);
GL.Disable(GL.GL_DEPTH_TEST);
GL.DepthFunc(GL.GL_NEVER);
GL.Enable(GL.GL_SCISSOR_TEST);
//set-up framebuffer
GL.GenFramebuffers(1, framebuffers);
GL.GenTextures(1, textures);
framebuffer = framebuffers[0];
framebufferColorTexture = textures[0];
GL.BindFramebuffer(GL.GL_FRAMEBUFFER_EXT, framebuffer);
//attach color texture to the framebuffer
GL.BindTexture(GL.GL_TEXTURE_2D, framebufferColorTexture);
GL.TexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA,
(int)size.Width, (int)size.Height, 0,
GL.GL_RGB, GL.GL_UNSIGNED_BYTE, IntPtr.Zero);
GL.FramebufferTexture2D(GL.GL_FRAMEBUFFER_EXT, GL.GL_COLOR_ATTACHMENT0_EXT, GL.GL_TEXTURE_2D,
framebufferColorTexture, 0);
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, (int)GL.GL_CLAMP);
GL.TexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, (int)GL.GL_CLAMP);
GL.GetFramebufferAttachmentParameteriv(GL.GL_FRAMEBUFFER_EXT,
GL.GL_COLOR_ATTACHMENT0_EXT, GL.GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE, IntBuffer);
Utility.CheckGLError();
var alphaBits = IntBuffer[0];
if(alphaBits != 8)
{
throw new Exception("Framebuffer format is not R8G8B8A8.");
}
//check if framebuffer is complete
if (GL.CheckFramebufferStatus(GL.GL_FRAMEBUFFER_EXT) != GL.GL_FRAMEBUFFER_COMPLETE_EXT)
{
throw new Exception("Framebuffer is not complete.");
}
GL.BindFramebuffer(GL.GL_FRAMEBUFFER_EXT, 0);
quadMesh = new QuadMesh(size.Width, size.Height);
Utility.CheckGLError();
}
public void Init(IntPtr windowHandle, Size size)
{
CreateOpenGLContext(windowHandle);
OpenGLMaterial.InitCommonMaterials();
ImGui.Development.SpecialMesh.Init();
// Other state
GL.Enable(GL.GL_MULTISAMPLE);
GL.Disable(GL.GL_CULL_FACE);
GL.Disable(GL.GL_DEPTH_TEST);
GL.DepthFunc(GL.GL_NEVER);
GL.Enable(GL.GL_SCISSOR_TEST);
InitializeTextRenderResources(size);
}