public void CreateTextureRender(GLContext control, EventHandler thumbnailUpdate, int width = 50, int height = 50) { var shader = GlobalShaders.GetShader("SCREEN"); Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, width, height); frameBuffer.Bind(); GL.ClearColor(0, 0, 0, 0); GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit); GL.Viewport(0, 0, width, height); GL.Disable(EnableCap.Blend); shader.Enable(); //Draw the texture onto the framebuffer ScreenQuadRender.Draw(shader, RenderableTex.ID); //Disable shader and textures GL.UseProgram(0); GL.BindTexture(TextureTarget.Texture2D, 0); var thumbnail = frameBuffer.ReadImagePixels(true); thumbnail.RotateFlip(System.Drawing.RotateFlipType.RotateNoneFlipY); //Dispose frame buffer frameBuffer.Dispoe(); frameBuffer.DisposeRenderBuffer(); this.Thumbnail = thumbnail; thumbnailUpdate?.Invoke(this, EventArgs.Empty); }
public static int CreateTextureRender(int textureID, int width, int height) { if (lutCache.ContainsKey(textureID.ToString())) { return(lutCache[textureID.ToString()]); } var shader = GlobalShaders.GetShader("LUT_DISPLAY"); Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, width, height, PixelInternalFormat.Rgba16f, 1); frameBuffer.Bind(); GL.Disable(EnableCap.Blend); shader.Enable(); GL.ActiveTexture(TextureUnit.Texture1); GL.BindTexture(TextureTarget.Texture3D, textureID); shader.SetInt("dynamic_texture_array", 1); GL.ClearColor(0, 0, 0, 0); GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit); GL.Viewport(0, 0, width, height); //Draw the texture onto the framebuffer ScreenQuadRender.Draw(); //Disable shader and textures GL.UseProgram(0); GL.BindTexture(TextureTarget.Texture3D, 0); var image = (GLTexture2D)frameBuffer.Attachments[0]; ID = image.ID; lutCache.Add(textureID.ToString(), ID); return(ID); }
public static GLTexture2D CreateTextureRender(GLTexture texture, int arrayLevel, int mipLevel, bool force = false) { if (!force && cubemapCache.ContainsKey(texture.ID.ToString())) { return(cubemapCache[texture.ID.ToString()]); } else { if (cubemapCache.ContainsKey(texture.ID.ToString())) { cubemapCache[texture.ID.ToString()]?.Dispose(); } } int width = texture.Width * 4; int height = texture.Height * 3; width = 512; height = 256; var shader = GlobalShaders.GetShader("EQUIRECTANGULAR"); var textureOutput = GLTexture2D.CreateUncompressedTexture(width, height, PixelInternalFormat.Rgba32f); textureOutput.MipCount = texture.MipCount; texture.Bind(); textureOutput.Bind(); textureOutput.GenerateMipmaps(); textureOutput.Unbind(); Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, width, height); frameBuffer.Bind(); GL.Disable(EnableCap.Blend); shader.Enable(); shader.SetBoolToInt("is_array", texture is GLTextureCubeArray); if (texture is GLTextureCubeArray) { GL.ActiveTexture(TextureUnit.Texture1); texture.Bind(); shader.SetInt("dynamic_texture_array", 1); } else { GL.ActiveTexture(TextureUnit.Texture1); texture.Bind(); shader.SetInt("dynamic_texture", 1); } for (int i = 0; i < textureOutput.MipCount; i++) { int mipWidth = (int)(width * Math.Pow(0.5, i)); int mipHeight = (int)(height * Math.Pow(0.5, i)); frameBuffer.Resize(mipWidth, mipHeight); GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, textureOutput.ID, i); shader.SetInt("arrayLevel", arrayLevel); shader.SetInt("mipLevel", mipLevel); GL.ClearColor(0, 0, 0, 0); GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit); GL.Viewport(0, 0, mipWidth, mipHeight); //Draw the texture onto the framebuffer ScreenQuadRender.Draw(); break; } //Disable shader and textures GL.UseProgram(0); GL.BindTexture(TextureTarget.Texture2D, 0); if (cubemapCache.ContainsKey(texture.ID.ToString())) { cubemapCache[texture.ID.ToString()] = textureOutput; } else { cubemapCache.Add(texture.ID.ToString(), textureOutput); } return(textureOutput); }