protected override void DrawSingleFrame(int iteration, Scene scene, Navigation navigation)
{
Debug.Assert(DepthPeeler != null);
Camera camera = navigation.Camera;
ComputeSensorTransform(camera);
GL.ClearColor(0f, 0f, 0f, 1f);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// bind color and depth textures
GL.ActiveTexture(TextureUnit.Texture0);
int lensSampleTex = IncrementalModeEnabled
? incrementalLensSampleTexture
: previewLensSampleTexture;
GL.BindTexture(TextureTarget.Texture3D, lensSampleTex);
//GL.ActiveTexture(TextureUnit.Texture1);
//GL.BindTexture(TextureTarget.Texture1D, pixelSampleTexture);
GL.ActiveTexture(TextureUnit.Texture2);
GL.BindTexture(TextureTarget.Texture2DArray, DepthPeeler.PackedDepthTextures);
GL.ActiveTexture(TextureUnit.Texture3);
GL.BindTexture(TextureTarget.Texture2DArray, DepthPeeler.ColorTextures);
GL.ActiveTexture(TextureUnit.Texture4);
GL.BindTexture(TextureTarget.Texture2DArray, NBuffers.NBuffersTextures);
// enable IBRT shader
GL.UseProgram(shaderProgram);
// set shader parameters (textures, lens model, ...)
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "lensSamplesTexture"), 0);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "pixelSamplesTexture"), 1);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "packedDepthTexture"), 2);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "colorTexture"), 3);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "nBuffersTexture"), 4);
GL.Uniform2(GL.GetUniformLocation(shaderProgram, "nBuffersSize"), NBuffers.Size);
GL.Uniform2(GL.GetUniformLocation(shaderProgram, "sensorSize"), camera.SensorSize);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sensorZ"), camera.SensorZ);
GL.Uniform3(GL.GetUniformLocation(shaderProgram, "sensorShift"), camera.SensorShift3);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "near"), camera.Near);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "far"), camera.Far);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "lensFocalLength"), camera.Lens.FocalLength);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "lensApertureRadius"), camera.Lens.ApertureRadius);
//Matrix4 perspective = camera.Perspective;
//GL.UniformMatrix4(GL.GetUniformLocation(shaderProgram, "perspective"), false, ref perspective);
GL.Uniform4(GL.GetUniformLocation(shaderProgram, "frustumBounds"), camera.FrustumBounds);
// jittering
GL.Uniform2(GL.GetUniformLocation(shaderProgram, "screenSize"), new Vector2(Width, Height));
GL.Uniform2(GL.GetUniformLocation(shaderProgram, "screenSizeInv"), new Vector2(1.0f / Width, 1.0f / Height));
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleCount"), (IncrementalModeEnabled ? SampleCount : PreviewSampleCount));
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleCountInv"), 1.0f / (IncrementalModeEnabled ? SampleCount : PreviewSampleCount));
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleIndexOffset"), IncrementalModeEnabled ? SampleCount * iteration : 0);
GL.Uniform1(GL.GetUniformLocation(shaderProgram, "totalSampleCount"), IncrementalModeEnabled ? MaxTotalSampleCount : PreviewSampleCount);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleCount"), SampleCount);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleCountInv"), 1.0f / SampleCount);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "sampleIndexOffset"), SampleCount * iteration);
//GL.Uniform1(GL.GetUniformLocation(shaderProgram, "totalSampleCount"), TotalSampleCount);
GL.Uniform2(GL.GetUniformLocation(shaderProgram, "cameraShift"), camera.LensShift);
GL.UniformMatrix3(GL.GetUniformLocation(shaderProgram, "sensorTransform"), 1, false, sensorTransform3x3);
// draw the quad
LayerHelper.DrawQuad();
// disable shader
GL.UseProgram(0);
// unbind textures
GL.ActiveTexture(TextureUnit.Texture4);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture3);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture2);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
public void DrawSingleFrame(Scene scene, Navigation navigation)
{
DrawSingleFrame(0, scene, navigation);
}