public void Create()
{
uint[] texture = new uint[1];
Device.GenTextures(1, texture);
TextureID = texture[0];
Device.BindTexture(OpenGL.GL_TEXTURE_2D, TextureID);
Device.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
Device.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
Device.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
Device.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
Device.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA8, (int)Width, (int)Height, 0, OpenGL.GL_RGBA, OpenGL.GL_UNSIGNED_BYTE, null);
uint[] frameID = new uint[1];
Device.GenFramebuffersEXT(1, frameID);
FrameBufferID = frameID[0];
Device.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, FrameBufferID);
Device.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, TextureID, 0);
uint[] dephtID = new uint[1];
Device.GenRenderbuffersEXT(1, dephtID);
DepthBufferID = dephtID[0];
Device.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER, DepthBufferID);
Device.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT24, (int)Width, (int)Height);
Device.FramebufferRenderbufferEXT(
OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER, DepthBufferID);
Device.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
}
/// <summary>
/// Handles the OpenGLInitialized event of the openGLControl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void openGLControl_OpenGLInitialized(object sender, EventArgs e)
{
// Get the OpenGL object.
OpenGL gl = openGLControl.OpenGL;
// Initial texture projector.
projTexture = new ProjectiveTexture(gl);
projector = new Projector();
// Initial something for creating texture.
gl.GenTextures(1, texture_name);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, texture_name[0]);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR_MIPMAP_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_GENERATE_MIPMAP_HINT_SGIS, OpenGL.GL_TRUE); // automatic mipmap generation included in OpenGL v1.4
gl.TexImage2D(OpenGL.GL_TEXTURE_2D,
0, (int)OpenGL.GL_RGBA8, TEXTURE_WIDTH, TEXTURE_HEIGHT, 0, OpenGL.GL_RGBA, OpenGL.GL_UNSIGNED_BYTE, null);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// InitFBO
// create a framebuffer object, you need to delete them when program exits.
gl.GenFramebuffersEXT(1, framebuffer_name);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, framebuffer_name[0]);
// create a renderbuffer object to store depth info
// NOTE: A depth renderable image should be attached the FBO for depth test.
// If we don't attach a depth renderable image to the FBO, then
// the rendering output will be corrupted because of missing depth test.
// If you also need stencil test for your rendering, then you must
// attach additional image to the stencil attachement point, too.
gl.GenRenderbuffersEXT(1, renderbuffer_name);
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, renderbuffer_name[0]);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT, TEXTURE_WIDTH, TEXTURE_HEIGHT);
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, 0);
// attach a texture to FBO color attachement point
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT,
OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, texture_name[0], 0);
// attach a renderbuffer to depth attachment point
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT,
OpenGL.GL_DEPTH_ATTACHMENT_EXT, OpenGL.GL_RENDERBUFFER_EXT, renderbuffer_name[0]);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
// initial projection matrix
gl.MatrixMode(OpenGL.GL_PROJECTION);
// Create a perspective transformation.
gl.Perspective(60.0f, (double)Width / (double)Height, 0.01, 100.0);
// Use the 'look at' helper function to position and aim the camera.
gl.LookAt(0, 0, 10, 0, 0, 0, 0, 1, 0);
// Set the clear color.
gl.ClearColor(0, 0, 0, 0);
}
public void CleanBuffers(OpenGL gl)
{
var shader = shaderClean;
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _FrameBuffer[0]);
shader.Bind(gl);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _FrameBuffer[1]);
shader.Bind(gl);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
Debug.WriteLine("Cleaning buffers");
}
private void CreateDBOs(OpenGLVersion openGLVersion, OpenGL gl, int width, int height, int bitDepth, object parameter)
{
uint[] ids = new uint[1];
// First, create the frame buffer and bind it.
ids = new uint[1];
gl.GenFramebuffersEXT(1, ids);
frameBufferID = ids[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, frameBufferID);
// Create the colour render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
colourRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA, width, height);
// Create the depth render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
depthRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, depthRenderBufferID);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT24, width, height);
// Set the render buffer for colour and depth.
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT,
OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, depthRenderBufferID);
dibSectionDeviceContext = Win32.CreateCompatibleDC(deviceContextHandle);
// Create the DIB section.
dibSection.Create(dibSectionDeviceContext, width, height, bitDepth);
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="openGLVersion">The desired OpenGL version.</param>
/// <param name="gl">The OpenGL context.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="bitDepth">The bit depth.</param>
/// <param name="parameter">The parameter</param>
/// <returns></returns>
public override bool Create(OpenGLVersion openGLVersion, OpenGL gl, int width, int height, int bitDepth, object parameter)
{
this.gl = gl;
// Call the base class.
base.Create(openGLVersion, gl, width, height, bitDepth, parameter);
uint[] ids = new uint[1];
// First, create the frame buffer and bind it.
gl.GenFramebuffersEXT(1, ids);
gl.ThrowIfErrors();
frameBufferID = ids[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, frameBufferID);
gl.ThrowIfErrors();
// Create the colour render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
gl.ThrowIfErrors();
colourRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.ThrowIfErrors();
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA, width, height);
gl.ThrowIfErrors();
// Create the depth stencil render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
gl.ThrowIfErrors();
depthStencilRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, depthStencilRenderBufferID);
gl.ThrowIfErrors();
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_DEPTH24_STENCIL8, width, height);
gl.ThrowIfErrors();
// Set the render buffer for colour, depth and stencil.
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT,
OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.ThrowIfErrors();
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, depthStencilRenderBufferID);
gl.ThrowIfErrors();
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_STENCIL_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, depthStencilRenderBufferID);
gl.ThrowIfErrors();
ValidateFramebufferStatus(gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT));
dibSectionDeviceContext = Win32.CreateCompatibleDC(deviceContextHandle);
// Create the DIB section.
dibSection.Create(dibSectionDeviceContext, width, height, bitDepth);
return(true);
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="openGLVersion">The desired OpenGL version.</param>
/// <param name="gl">The OpenGL context.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="bitDepth">The bit depth.</param>
/// <param name="parameter">The parameter</param>
/// <returns></returns>
public override bool Create(OpenGLVersion openGLVersion, OpenGL gl, int width, int height, int bitDepth, object parameter)
{
// Call the base class.
base.Create(openGLVersion, gl, width, height, bitDepth, parameter);
uint[] ids = new uint[1];
// Multi sampled fbo
gl.GenFramebuffersEXT(1, ids);
gl.ThrowIfErrors();
msFrameBufferID = ids[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, msFrameBufferID);
gl.ThrowIfErrors();
// Create the colour render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
gl.ThrowIfErrors();
msColourRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, msColourRenderBufferID);
gl.ThrowIfErrors();
gl.RenderbufferStorageMultisampleEXT(OpenGL.GL_RENDERBUFFER_EXT, MSAA, OpenGL.GL_RGBA, width, height);
gl.ThrowIfErrors();
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_RENDERBUFFER_EXT, msColourRenderBufferID);
gl.ThrowIfErrors();
// Create the depth stencil render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
gl.ThrowIfErrors();
msDepthStencilRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, msDepthStencilRenderBufferID);
gl.ThrowIfErrors();
gl.RenderbufferStorageMultisampleEXT(OpenGL.GL_RENDERBUFFER_EXT, MSAA, OpenGL.GL_DEPTH24_STENCIL8, width, height);
gl.ThrowIfErrors();
// Set the render buffer for depth and stencil.
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, msDepthStencilRenderBufferID);
gl.ThrowIfErrors();
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_STENCIL_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, msDepthStencilRenderBufferID);
gl.ThrowIfErrors();
ValidateFramebufferStatus(gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT));
return(true);
}
/// <summary>
/// Creates the render context provider. Must also create the OpenGL extensions.
/// </summary>
/// <param name="gl">The OpenGL context.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="bitDepth">The bit depth.</param>
/// <param name="parameter"></param>
/// <returns></returns>
public override bool Create(OpenGL gl, int width, int height, int bitDepth, object parameter)
{
this.gl = gl;
// Call the base class.
base.Create(gl, width, height, bitDepth, parameter);
uint[] ids = new uint[1];
// First, create the frame buffer and bind it.
ids = new uint[1];
gl.GenFramebuffersEXT(1, ids);
frameBufferID = ids[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, frameBufferID);
// Create the colour render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
colourRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA, width, height);
// Create the depth render buffer and bind it, then allocate storage for it.
gl.GenRenderbuffersEXT(1, ids);
depthRenderBufferID = ids[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, depthRenderBufferID);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT24, width, height);
// Set the render buffer for colour and depth.
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT,
OpenGL.GL_RENDERBUFFER_EXT, colourRenderBufferID);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER_EXT, depthRenderBufferID);
dibSectionDeviceContext = Win32.CreateCompatibleDC(deviceContextHandle);
// Create the DIB section.
dibSection.Create(dibSectionDeviceContext, width, height, bitDepth);
return true;
}
/// <summary>
/// Renders the scene in retained mode.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
/// <param name="useToonShader">if set to <c>true</c> use the toon shader, otherwise use a per-pixel shader.</param>
public void Render(OpenGL gl)
{
if (_SaveNextRender)
{
SaveInternal(gl);
}
if (_MaxIterations > 0 && _FramesRendered > _MaxIterations - 1 && _Rendering == false)
{
return;
}
// Clear the color and depth buffer.
gl.ClearColor(0f, 0f, 0f, 0f);
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT | OpenGL.GL_STENCIL_BUFFER_BIT);
int renderBuffer = 0;
if (_PingPong)
{
renderBuffer = 1;
}
float[] viewport = new float[4];
gl.GetFloat(OpenGL.GL_VIEWPORT, viewport);
Debug.WriteLine("Rendering renderbuffer : " + renderBuffer);
if (_Depth)
{
gl.Viewport(0, 0, 1, 1);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _DepthFrameBuffer[0]);
SceneRender(gl);
gl.Viewport(0, 0, (int)viewport[2], (int)viewport[3]);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _DepthCalcBuffer[0]);
int[] pixels = new int[4];
gl.GetTexImage(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA, OpenGL.GL_FLOAT, pixels);
float valr = BitConverter.ToSingle(BitConverter.GetBytes(pixels[0]), 0);
// if (valr != valr)
// throw new Exception("Depth test failed");
// float valg = BitConverter.ToSingle(BitConverter.GetBytes(pixels[1]), 0);
// float valb = BitConverter.ToSingle(BitConverter.GetBytes(pixels[2]), 0);
// float vala = BitConverter.ToSingle(BitConverter.GetBytes(pixels[3]), 0);
_ImageDepth = valr;
_ImageDepthSet = true;
_Depth = false;
}
gl.Viewport(0, 0, _TargetWidth, _TargetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _FrameBuffer[renderBuffer]);
SceneRender(gl);
int target = 0;
_PostProcess.Render(gl, _TargetWidth, _TargetHeight, ref target, _EffectFrameBuffer, _RaytracerBuffer[renderBuffer], _EffectRaytracerBuffer);
// !!!!!!!!!!!!!!!! Tonemapping
gl.Viewport(0, 0, _TargetWidth, _TargetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _IntFrameBuffer[0]);
var shader = shaderTransfer;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _EffectRaytracerBuffer[target]);
shader.Bind(gl);
shader.SetUniform1(gl, "renderedTexture", 0);
shader.SetUniform1(gl, "gammaFactor", (float)_PostProcess._GammaFactor);
shader.SetUniform1(gl, "gammaContrast", (float)_PostProcess._GammaContrast);
shader.SetUniform1(gl, "mode", _PostProcess._ToneMappingMode);
shader.SetUniform1(gl, "toneFactor", (float)_PostProcess._ToneFactor);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
// CheckForError(gl);
shader.Unbind(gl);
// !!!!!!!!!!!!!!!!! Int to final framebuffer
gl.Viewport(0, 0, (int)viewport[2], (int)viewport[3]);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
// get a reference to the transfer shader
shader = shaderIntTransfer;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _PostprocessBuffer[0]);
shader.Bind(gl);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
gl.Viewport(0, 0, (int)viewport[2], (int)viewport[3]);
// CheckForError(gl);
shader.Unbind(gl);
// TIDY UP
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
if (_Rendering)
{
_FramesRendered += 1.0 / (double)_ProgressiveSteps;
if (_MaxIterations > 0 && _FramesRendered > _MaxIterations - 1)
{
_Rendering = false;
}
else
{
_ProgressiveIndex += 256 / _ProgressiveSteps;
_Rays = _TargetHeight * _TargetHeight * _FramesRendered;
if (_ProgressiveIndex >= 256)
{
_ProgressiveIndex = 0;
_PingPong = !_PingPong;
}
}
}
}
/// <summary>
/// Initialises the Scene.
/// </summary>
/// <param name="gl">The OpenGL instance.</param>
public void Initialise(OpenGL gl, int width, int height, mat4 viewMatrix, vec3 position, bool burnVariables)
{
Logger.Log("ShaderRenderer.Initialise Started");
_GL = gl;
if (_Initialised)
{
Destroy(gl);
_Initialised = true;
}
_ViewMatrix = viewMatrix;
_Position = position;
_TargetWidth = width;
_TargetHeight = height;
_ProgressiveSteps = 1;
_ProgressiveIndex = 0;
_BurnVariables = burnVariables;
// We're going to specify the attribute locations for the position and normal,
// so that we can force both shaders to explicitly have the same locations.
const uint positionAttribute = 0;
var attributeLocations = new Dictionary <uint, string>
{
{ positionAttribute, "Position" }
};
Logger.Log("ShaderRenderer.Initialise Loading shaders from manifest");
// Create the raymarch shader
shaderRayMarch = new ShaderProgram();
if (_Program == null)
{
shaderRayMarch.Create(gl,
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarchProgressive.vert"),
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarch.frag"), attributeLocations);
}
else
{
if (_BurnVariables)
{
ShaderVariables shaderVars = GetShaderVars();
shaderVars.BurnVariables(ref _Program);
}
_ShaderError = false;
try
{
shaderRayMarch.Create(gl,
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarchProgressive.vert"),
_Program, attributeLocations);
}
catch (ShaderCompilationException exception)
{
_ShaderError = true;
MessageBox.Show(exception.Message + "\r\n" + exception.CompilerOutput);
}
}
// Create the transfer shader
string fragShader = @"
#version 130
in vec2 texCoord;
out vec4 FragColor;
uniform float mode; // 0=ramp, 1=exposure, 2=standard
uniform float toneFactor;
uniform float gammaFactor;
uniform float gammaContrast;
uniform sampler2D renderedTexture;
vec3 filmic(vec3 value)
{
float A=0.22;
float B=0.30;
float C=0.1;
float D=0.2;
float E=0.01;
float F=0.3;
return ((value*(A*value+C*B)+D*E)/(value*(A*value+B)+D*F)) - E/F;
}
void main()
{
vec4 rgb = texture(renderedTexture, vec2((texCoord.x+1)*0.5, (texCoord.y+1)*0.5));
FragColor=rgb;
// FragColor.rgb /= FragColor.a;
// brightness/contrast
float luminance = dot(FragColor.rgb, vec3(0.2126,0.7152,0.0722));
float luminanceOut = gammaFactor * pow(luminance, gammaContrast);
float multiplier = (max(0, luminance) * luminanceOut) / (luminance * luminance);
FragColor.rgb *= multiplier;
if (mode>2.9 && mode<3.1)
{
//filmic https://www.slideshare.net/ozlael/hable-john-uncharted2-hdr-lighting
FragColor.rgb = filmic(FragColor.rgb)/filmic(vec3(toneFactor));
}
else if (mode>1.9 && mode<2.1)
{
//reinhard https://imdoingitwrong.wordpress.com/2010/08/19/why-reinhard-desaturates-my-blacks-3/
float nL = luminance * (1+luminance/(toneFactor*toneFactor)) / (1+luminance);
FragColor.rgb *= nL;
}
else if (mode>0.9 && mode<1.1)
{
//exposure originally Matt Fairclough
FragColor.rgb = 1 - exp(-FragColor.rgb * toneFactor);
}
else
{
FragColor.rgb /= toneFactor;
}
}
";
shaderTransfer = new ShaderProgram();
shaderTransfer.Create(gl,
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarch.vert"),
fragShader, attributeLocations);
CheckForError(gl);
fragShader = @"
#version 130
in vec2 texCoord;
out vec4 FragColor;
void main()
{
FragColor=vec4(0,0,0,0);
}
";
shaderClean = new ShaderProgram();
shaderClean.Create(gl,
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarch.vert"),
fragShader, attributeLocations);
CheckForError(gl);
// Create the transfer shader
string fragShaderIntTransfer = @"
#version 130
in vec2 texCoord;
out vec4 FragColor;
uniform sampler2D renderedTexture;
void main()
{
vec4 rgb = texture(renderedTexture, vec2((texCoord.x+1)*0.5, (texCoord.y+1)*0.5));
FragColor=rgb;
}
";
shaderIntTransfer = new ShaderProgram();
shaderIntTransfer.Create(gl,
ManifestResourceLoader.LoadTextFile(@"Shaders\RayMarch.vert"),
fragShaderIntTransfer, attributeLocations);
CheckForError(gl);
Logger.Log("ShaderRenderer.Initialise Loading random numbers");
LoadRandomNumbers(gl);
Logger.Log("ShaderRenderer.Initialise Finished loading random numbers");
float[] viewport = new float[4];
gl.GetFloat(OpenGL.GL_VIEWPORT, viewport);
gl.GenFramebuffersEXT(2, _FrameBuffer);
CheckForError(gl);
gl.GenTextures(2, _RaytracerBuffer);
CheckForError(gl);
for (int i = 0; i < 2; i++)
{
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _FrameBuffer[i]);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _RaytracerBuffer[i]);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_GENERATE_MIPMAP_SGIS, OpenGL.GL_FALSE); // automatic mipmap
// gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA, (int)viewport[2], (int)viewport[3], 0,
// OpenGL.GL_RGBA, OpenGL.GL_FLOAT, null);
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA32F, _TargetWidth, _TargetHeight, 0,
OpenGL.GL_RGBA, OpenGL.GL_FLOAT, null);
CheckForError(gl);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, _RaytracerBuffer[i], 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT, OpenGL.GL_RENDERBUFFER_EXT, 0);
}
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
gl.GenFramebuffersEXT(2, _EffectFrameBuffer);
CheckForError(gl);
gl.GenTextures(2, _EffectRaytracerBuffer);
CheckForError(gl);
for (int i = 0; i < 2; i++)
{
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _EffectFrameBuffer[i]);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _EffectRaytracerBuffer[i]);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_GENERATE_MIPMAP_SGIS, OpenGL.GL_FALSE); // automatic mipmap
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA32F, _TargetWidth, _TargetHeight, 0,
OpenGL.GL_RGBA, OpenGL.GL_FLOAT, null);
CheckForError(gl);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, _EffectRaytracerBuffer[i], 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT, OpenGL.GL_RENDERBUFFER_EXT, 0);
}
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// and now initialise the integer framebuffer
gl.GenFramebuffersEXT(1, _IntFrameBuffer);
CheckForError(gl);
gl.GenTextures(1, _PostprocessBuffer);
CheckForError(gl);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _IntFrameBuffer[0]);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _PostprocessBuffer[0]);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_GENERATE_MIPMAP_SGIS, OpenGL.GL_FALSE); // automatic mipmap
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA, _TargetWidth, _TargetHeight, 0, OpenGL.GL_RGBA, OpenGL.GL_UNSIGNED_BYTE, null);
CheckForError(gl);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, _PostprocessBuffer[0], 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT, OpenGL.GL_RENDERBUFFER_EXT, 0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
_PostProcess = new PostProcess();
_PostProcess.Initialise(gl);
gl.GenFramebuffersEXT(1, _DepthFrameBuffer);
gl.GenTextures(1, _DepthCalcBuffer);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _DepthFrameBuffer[0]);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, _DepthCalcBuffer[0]);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR_MIPMAP_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_GENERATE_MIPMAP_SGIS, OpenGL.GL_TRUE);
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA32F, 1, 1, 0, OpenGL.GL_RGBA, OpenGL.GL_FLOAT, null);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, _DepthCalcBuffer[0], 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT, OpenGL.GL_RENDERBUFFER_EXT, 0);
_Initialised = true;
/*
* gl.GenRenderbuffersEXT(2, _RaytracerBuffer);
* gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, _RaytracerBuffer[0]);
* gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA32F, (int)viewport[2], (int)viewport[3]);
* gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, _RaytracerBuffer[1]);
* gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA32F, (int)viewport[2], (int)viewport[3]);
*/
// gl.GenRenderbuffersEXT(1, _RenderBuffer);
//gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER_EXT, _RenderBuffer[0]);
//gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER_EXT, OpenGL.GL_RGBA, (int)viewport[2], (int)viewport[3]);
Logger.Log("ShaderRenderer.Initialise Finished");
}
public void BeginBuffering()
{
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, framebuffers[0]);
}
public GL_GUI_Context(Window window, float width, float height)
{
this.window = window;
this.Width = width;
this.Height = height;
context = SDL.SDL_GL_CreateContext(window.Handle);
SDL.SDL_GL_MakeCurrent(window.Handle, context);
gl = new OpenGL();
gl.Enable(OpenGL.GL_TEXTURE_2D);
shaderProgram = new ShaderProgram();
shaderProgram.Create(gl, VERTEX_SHADER, FRAGMENT_SHADER, null);
shaderProgram.BindAttributeLocation(gl, 0, "in_Position");
shaderProgram.BindAttributeLocation(gl, 1, "in_Color");
shaderProgram.AssertValid(gl);
gl.GenFramebuffersEXT(1, framebuffers);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, framebuffers[0]);
gl.GenTextures(1, framebufferTargets);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, framebufferTargets[0]);
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGB, window.DisplayWidth, window.DisplayHeight, 0, OpenGL.GL_RGB, OpenGL.GL_UNSIGNED_BYTE, IntPtr.Zero);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_NEAREST);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_NEAREST);
gl.FramebufferTexture(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT, framebufferTargets[0], 0);
gl.DrawBuffers(1, new uint[] { OpenGL.GL_COLOR_ATTACHMENT0_EXT });
if (gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT) != OpenGL.GL_FRAMEBUFFER_COMPLETE_EXT)
{
throw new Exception("Frame buffer setup not complete");
}
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
ortho = new float[] {
2.0f / Width, 0.0f, 0.0f, 0.0f,
0.0f, -2.0f / Height, 0.0f, 0.0f,
0.0f, 0.0f, -1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f,
};
gl.Viewport(0, 0, window.DisplayWidth, window.DisplayHeight);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA);
gl.Disable(OpenGL.GL_CULL_FACE);
gl.Disable(OpenGL.GL_DEPTH_TEST);
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.Enable(OpenGL.GL_SCISSOR_TEST);
shaderProgram.Bind(gl);
shaderProgram.SetUniformMatrix4(gl, "projectionMatrix", ortho);
vertexBufferArray = new VertexBufferArray();
vertexBufferArray.Create(gl);
vertexBufferArray.Bind(gl);
}
public static FrameBuffer Create(OpenGL gl, int width, int height)
{
Texture tex = new Texture();
tex.Create(gl);
tex.Bind(gl);
gl.TexParameter(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
gl.TexParameter(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
gl.TexParameter(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl.TexParameter(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, null);
gl.BindTexture(GL_TEXTURE_2D, 0);
//------
uint[] frameBufferIds = new uint[1];
gl.GenFramebuffersEXT(1, frameBufferIds);
gl.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, frameBufferIds[0]);
gl.FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tex.TextureName, 0);
//------
uint[] renderBufferIds = new uint[1];
gl.GenRenderbuffersEXT(1, renderBufferIds);
gl.BindRenderbufferEXT(GL_RENDERBUFFER_EXT, renderBufferIds[0]);
gl.RenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, width, height);
//-------------------------
//Attach depth buffer to FBO
gl.FramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, renderBufferIds[0]);
//------
var status = gl.CheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status == GL_FRAMEBUFFER_COMPLETE_EXT)
{
FrameBuffer.Unbind(gl);
return(new FrameBuffer(gl, frameBufferIds, renderBufferIds, tex));
}
switch (status)
{
//case GL_FRAMEBUFFER_UNDEFINED_EXT:
// throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_UNDEFINED_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT));
case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS));
case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT:
throw new InvalidOperationException(nameof(GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT));
default:
throw new InvalidOperationException("GL_FRAMEBUFFER unknown error");
}
}
public void Render()
{
if (postprocessingEnabled && postShader != null && postShader.Compiled)
{
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, fbo);
}
float[] clear = Convert.ColorToGLColor(ClearColor);
gl.ClearColor(clear[0], clear[1], clear[2], clear[3]);
camera.Project(gl);
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT |
OpenGL.GL_STENCIL_BUFFER_BIT);
attrs.Push(gl, null);
if (RenderGrid)
grid.Render(gl);
if (RenderAxies)
axies.Render(gl);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(OpenGL.GL_ONE, OpenGL.GL_ONE);
foreach (Node node in children)
{
if (node is Light)
node.Render(gl);
}
if (Model != null)
Model.Render(gl);
foreach (Node node in children)
{
if (node is Light)
((Light)node).Pop(gl);
}
gl.Disable(OpenGL.GL_BLEND);
attrs.Pop(gl, null);
gl.Flush();
if (postprocessingEnabled && postShader != null && postShader.Compiled)
{
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
gl.ClearColor(0, 0, 0, 1);
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
gl.MatrixMode(OpenGL.GL_PROJECTION);
gl.LoadIdentity();
gl.Ortho(0, viewportSize.Width, viewportSize.Height, 0, -1, 1);
gl.MatrixMode(OpenGL.GL_MODELVIEW);
gl.LoadIdentity();
postShader.Bind();
postShader.SetUniform1("resolution_x", viewportSize.Width);
postShader.SetUniform1("resolution_y", viewportSize.Height);
//gl.Uniform2(postShader.GetUniformLocation("resolution"),
// viewportSize.Width, viewportSize.Height);
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, fboTexture);
postShader.SetUniform1("texFramebuffer", 0);
gl.Begin(OpenGL.GL_QUADS);
gl.TexCoord(0, 1); gl.Vertex(0, 0);
gl.TexCoord(0, 0); gl.Vertex(0, (float)viewportSize.Height);
gl.TexCoord(1, 0); gl.Vertex((float)viewportSize.Width, (float)viewportSize.Height);
gl.TexCoord(1, 1); gl.Vertex((float)viewportSize.Width, 0);
gl.End();
postShader.Unbind();
}
}
public void Bind()
{
GL.BindRenderbufferEXT(GL_RENDERBUFFER, renderBufferIds[0]);
GL.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, frameBufferIds[0]);
}
/// <summary>
/// Render texture with FBO and draw it to memory.
/// </summary>
private void RenderTexWithFBOandDraw()
{
OpenGL gl = openGLControl.OpenGL;
// render to texture
// adjust viewport and projection matrix to texture dimension
gl.Viewport(0, 0, TEXTURE_WIDTH, TEXTURE_HEIGHT);
gl.MatrixMode(OpenGL.GL_PROJECTION);
gl.LoadIdentity();
gl.Perspective(fovy, (double)Width / (double)Height, 0.01f, 100.0);
gl.LookAt(
status.eye.x + status.kinect.x,
status.eye.y + status.kinect.y,
status.eye.z + status.kinect.z,
buildingModelCursor.GetCoordinate().x,
buildingModelCursor.GetCoordinate().y,
buildingModelCursor.GetCoordinate().z,
0, 1, 0
);
// with FBO
// set the rendering destination to FBO
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, framebuffer_name[0]);
gl.MatrixMode(OpenGL.GL_MODELVIEW);
gl.LoadIdentity();
// clear buffer
gl.ClearColor(0, 0, 0, 1);
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
// start to draw
gl.PushMatrix();
// Load the identity matrix.
gl.Enable(OpenGL.GL_TEXTURE_2D);
drawer.DrawBuildingPart(gl, buildingModelCursor, DrawType.Full);
if (status != null && buildingModelCursor != null)
{
switch (buildingModelCursor.GetBuildingType())
{
case BuildingObjectType.Floor:
drawer.DrawBuildingPart(gl, buildingOutsideModel, DrawType.WireFrame);
drawer.DrawBuildingPart(gl, buildingModelCursor, DrawType.Full);
break;
case BuildingObjectType.Object:
System.Collections.Hashtable childs = buildingModelCursor.Father.GetChilds();
foreach (System.Collections.DictionaryEntry childEntry in buildingModelCursor.Father.GetChilds())
{
BuildingObjectLib3DS child = childEntry.Value as BuildingObjectLib3DS;
if (child != buildingModelCursor)
{
drawer.DrawBuildingPart(gl,
child,
DrawType.WireFrame);
}
else
{
drawer.DrawBuildingPart(gl,
child,
DrawType.Full);
}
}
break;
case BuildingObjectType.Room:
// TODO
case BuildingObjectType.Outside:
case BuildingObjectType.Building:
drawer.DrawBuildingPart(gl, buildingModelCursor, DrawType.Full);
break;
}
}
//drawer.DrawBuildingPart(gl, modelForFun, DrawType.Full);
gl.PopMatrix();
// back to normal window-system-provided framebuffer
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0); // unbind
// trigger mipmaps generation explicitly
// NOTE: If GL_GENERATE_MIPMAP is set to GL_TRUE, then glCopyTexSubImage2D()
// triggers mipmap generation automatically. However, the texture attached
// onto a FBO should generate mipmaps manually via glGenerateMipmapEXT().
gl.BindTexture(OpenGL.GL_TEXTURE_2D, texture_name[0]);
gl.GenerateMipmapEXT(OpenGL.GL_TEXTURE_2D);
//gl.TexEnv(OpenGL.GL_TEXTURE_ENV, OpenGL.GL_TEXTURE_ENV_MODE, OpenGL.GL_ADD);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// TODO: without FBO, maybe need
}
public void Render(OpenGL gl, int targetWidth, int targetHeight, ref int target, uint[] effectFrameBuffer, uint raytracerBuffer, uint[] effectRaytracerBuffer)
{
if (_PostProcessFilter == 0)
{
// !!!!!!!!!!!!!!! rgb / a
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
var shader = shaderRGBA;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, raytracerBuffer);
shader.Bind(gl);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
}
else if (_PostProcessFilter == 1)
{
// !!!!!!!!!!!!!!! rgb / a
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
var shader = shaderRGBA;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, raytracerBuffer);
shader.Bind(gl);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
// !!!!!!!!!!!!!!! exponent
target = target > 0 ? 0 : 1;
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
shader = shaderHighlights;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, effectRaytracerBuffer[target > 0 ? 0 : 1]);
shader.Bind(gl);
shader.SetUniform1(gl, "exponent", (float)_GaussianExposure);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
// !!!!!!!!!!!!!!! gaussianShaderX
target = target > 0 ? 0 : 1;
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
shader = shaderGaussianX;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, effectRaytracerBuffer[target > 0 ? 0 : 1]);
shader.Bind(gl);
shader.SetUniform1(gl, "screenWidth", targetWidth);
shader.SetUniform1(gl, "screenHeight", targetHeight);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
// !!!!!!!!!!!!!!! gaussianShaderY
target = target > 0 ? 0 : 1;
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
shader = shaderGaussianY;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, effectRaytracerBuffer[target > 0 ? 0 : 1]);
shader.Bind(gl);
shader.SetUniform1(gl, "screenWidth", targetWidth);
shader.SetUniform1(gl, "screenHeight", targetHeight);
shader.SetUniform1(gl, "renderedTexture", 0);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
// !!!!!!!!!!!!!!! blend
target = target > 0 ? 0 : 1;
gl.Viewport(0, 0, targetWidth, targetHeight);
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, effectFrameBuffer[target]);
shader = shaderBlend;
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, raytracerBuffer);
gl.ActiveTexture(OpenGL.GL_TEXTURE1);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, effectRaytracerBuffer[target > 0 ? 0 : 1]);
shader.Bind(gl);
shader.SetUniform1(gl, "factor1", 1);
shader.SetUniform1(gl, "factor2", (float)_PostProcessAmount);
int rte1 = shader.GetUniformLocation(gl, "renderedTexture1");
int rne1 = shader.GetUniformLocation(gl, "renderedTexture2");
gl.Uniform1(rte1, 0);
gl.Uniform1(rne1, 1);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
shader.Unbind(gl);
}
}
public void Bind()
{
_gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, _fbo[0]);
}
public static void Unbind(OpenGL gl)
{
gl.BindRenderbufferEXT(GL_RENDERBUFFER, 0);
gl.BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}