public void Draw(IRenderState renderState, ITexture2D depth, float mipmapLevel = 0)
{
_geometries[_entity.Type].SetAttribute(_environmentMapProgram.GetResourceLocation(ShaderResourceType.Attribute, "transform"), new[] { _entity.Transform }, true);
GL.ClearColor(Color.FromArgb(0, 0, 0, 0));
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_environmentMapProgram.Activate();
_environmentMapProgram.ActivateTexture("cubeMap", 0, _cubeFbo.Texture);
_environmentMapProgram.ActivateTexture("depth", 1, depth);
_environmentMapProgram.Uniform("camera", _camera);
Matrix4x4.Invert(_camera.Matrix, out var invert);
_environmentMapProgram.Uniform("camPos", invert.Translation / invert.M44);
_environmentMapProgram.Uniform("mipmapLevel", mipmapLevel);
_geometries[_entity.Type].Draw();
_environmentMapProgram.DeactivateTexture(0, _cubeFbo.Texture);
_environmentMapProgram.DeactivateTexture(1, depth);
_environmentMapProgram.Deactivate();
_outputSurface.Deactivate();
GL.ClearColor(Color.FromArgb(0, 0, 0, 1));
}
public void ShowTexture(uint texture, Matrix4x4 viewMatrix, Matrix4x4 projectionMatrix)
{
cubeProjectionShader.Activate();
SetSampler(cubeProjectionShader.ProgramID, 0, "equirectangularMap", texture);
cubeProjectionShader.Uniform("projection", projectionMatrix, true);
cubeProjectionShader.Uniform("view", viewMatrix, true);
unitCube.Draw();
DeactivateTexture(0);
cubeProjectionShader.Deactivate();
DeactivateTexture(0);
}
public void Draw(IRenderState renderState, ITransformation camera, Dictionary <Enums.EntityType, int> instanceCounts, Dictionary <Enums.EntityType, ITexture2D> textures, Dictionary <Enums.EntityType, ITexture2D> normalMaps, List <Enums.EntityType> disableBackFaceCulling)
{
_outputSurface.Activate();
renderState.Set(new DepthTest(true));
GL.ClearColor(System.Drawing.Color.FromArgb(0, 0, 0, 0));
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.ClearBuffer(ClearBuffer.Color, 2, new float[] { 1000 });
GL.DrawBuffers(4, new[] { DrawBuffersEnum.ColorAttachment0, DrawBuffersEnum.ColorAttachment1, DrawBuffersEnum.ColorAttachment2, DrawBuffersEnum.ColorAttachment3 });
_deferredProgram.Activate();
_deferredProgram.Uniform("camera", camera);
Matrix4x4.Invert(camera.Matrix, out var invert);
_deferredProgram.Uniform("camPos", invert.Translation / invert.M44);
foreach (var type in _geometries.Keys)
{
if (instanceCounts[type] == 0)
{
continue;
}
if (normalMaps.ContainsKey(type))
{
_deferredProgram.ActivateTexture("normalMap", 1, normalMaps[type]);
}
else
{
_deferredProgram.ActivateTexture("normalMap", 1, _defaultMap);
_deferredProgram.Uniform("normalMapping", 0f);
_deferredProgram.Uniform("paralaxMapping", 0f);
}
if (textures.ContainsKey(type))
{
_deferredProgram.ActivateTexture("tex", 0, textures[type]);
_deferredProgram.Uniform("textured", 1f);
}
else
{
_deferredProgram.Uniform("materialColor", System.Drawing.Color.LightGray);
_deferredProgram.Uniform("textured", 0f);
}
renderState.Set(disableBackFaceCulling.Contains(type)
? new BackFaceCulling(false)
: new BackFaceCulling(true));
_geometries[type].Draw(instanceCounts[type]);
if (textures.ContainsKey(type))
{
_deferredProgram.DeactivateTexture(0, textures[type]);
}
}
renderState.Set(new DepthTest(false));
renderState.Set(new BackFaceCulling(true));
_outputSurface.Deactivate();
}
private void DrawShadowSurface(IRenderState renderState, Vector3 lightDirection, ITransformation lightCamera, ITransformation camera, Dictionary <Enums.EntityType, int> instanceCounts, List <Enums.EntityType> disableBackFaceCulling)
{
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_shadowShader.Activate();
_depthSurface.Texture.WrapFunction = TextureWrapFunction.ClampToEdge;
_depthSurface.Texture.Activate();
_shadowShader.Uniform("lightDirection", lightDirection);
_shadowShader.Uniform("lightCamera", lightCamera);
_shadowShader.Uniform("camera", camera);
GL.Uniform1(_shadowShader.GetResourceLocation(ShaderResourceType.Uniform, "lightDepth"), 0);
foreach (var type in _geometriesDepth.Keys)
{
if (disableBackFaceCulling.Contains(type))
{
renderState.Set(new BackFaceCulling(false));
}
_geometriesShadow[type].Draw(instanceCounts[type]);
renderState.Set(new BackFaceCulling(true));
}
_depthSurface.Texture.Deactivate();
_shadowShader.Deactivate();
_outputSurface.Deactivate();
}
//Filter FBO2 and Write result in FBO1[0]
private void ProcessFilterPass(ITexture2D sourceTexture, IRenderSurface fbo)
{
int halfKernelX = kernelSizeX / 2;
int halfKernelY = kernelSizeY / 2;
fbo.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
shaderSATFilter.Activate();
int SATSampler = GL.GetUniformLocation(shaderSATFilter.ProgramID, "sourceSampler");
GL.Uniform1(SATSampler, 0);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, sourceTexture.ID);
//sourceTexture.Activate();
shaderSATFilter.Uniform("width", sourceTexture.Width);
shaderSATFilter.Uniform("height", sourceTexture.Height);
shaderSATFilter.Uniform("halfKernelX", halfKernelX);
shaderSATFilter.Uniform("halfKernelY", halfKernelY);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
//sourceTexture.Deactivate();
shaderSATFilter.Deactivate();
fbo.Deactivate();
}
private void SumValues(ITexture2D sourceTexture, IShaderProgram program, IRenderSurface fbo)
{
int SATSampler = GL.GetUniformLocation(fullScreenQuad.ProgramID, "sourceSampler");
fbo.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
program.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Uniform1(SATSampler, 0);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, sourceTexture.ID);
program.Uniform("blockLengthX", blockSizeX);
program.Uniform("blockLengthY", blockSizeX);
program.Uniform("amountBlockX", amountBlocksX);
program.Uniform("amountBlockY", amountBlocksX);
//satFilter.GetFilterTexture().Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
//satFilter.GetFilterTexture().Deactivate();
program.Deactivate();
fbo.Deactivate();
}
private void DrawShadowSurface(Vector3 lightDirection, ITransformation lightCamera, ITexture2D positions, ITexture2D normals)
{
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_shadowShader.Activate();
_depthSurface.Texture.WrapFunction = TextureWrapFunction.ClampToEdge;
_shadowShader.ActivateTexture("lightDepth", 0, _depthSurface.Texture);
_shadowShader.ActivateTexture("positions", 1, positions);
_shadowShader.ActivateTexture("normals", 2, normals);
_shadowShader.Uniform("lightDirection", lightDirection);
_shadowShader.Uniform("lightCamera", lightCamera);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
_shadowShader.DeactivateTexture(2, normals);
_shadowShader.DeactivateTexture(1, positions);
_shadowShader.DeactivateTexture(0, _depthSurface.Texture);
_shadowShader.Deactivate();
_outputSurface.Deactivate();
}
uint CreateIntegratedMap(int frameBuffer)
{
ErrorCode err = GL.GetError();
renderState.Set(new FaceCullingModeState(FaceCullingMode.NONE));
uint integratedMap = (uint)GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, integratedMap);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rg16f, 512, 512, 0, PixelFormat.Rg, PixelType.Float, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2D, integratedMap, 0);
GL.Viewport(0, 0, 512, 512);
integrationMapShader.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
integrationMapShader.Deactivate();
ErrorCode err1 = GL.GetError();
return(integratedMap);
}
internal void Draw()
{
GL.Clear(ClearBufferMask.ColorBufferBit);
shader.Activate();
draw();
shader.Deactivate();
}
uint CreateIrradianceMap(int frameBuffer, Matrix4x4 projection, Matrix4x4[] viewMatrices, uint cubeMap)
{
DefaultMesh cubeMesh = Meshes.CreateCubeWithNormals();
VAO renderIrradMapCube = VAOLoader.FromMesh(cubeMesh, irradianceMapShader);
//Create Irradiance Texture
int fbIrrWidth = 32;
int fbIrrHeight = 32;
int irradMap = CreateCubeMap(32, 32);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
//GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.TextureCubeMap, irradMap, 0);
//Render
//Irradiance Map
irradianceMapShader.Activate();
SetSampler(irradianceMapShader.ProgramID, 0, "environmentMap", cubeMap, TextureTarget.TextureCubeMap);
irradianceMapShader.Uniform("projection", projection, true);
GL.Viewport(0, 0, fbIrrWidth, fbIrrHeight);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
for (int i = 0; i < 6; i++)
{
irradianceMapShader.Uniform("view", viewMatrices[i], true);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.TextureCubeMapPositiveX + i, irradMap, 0);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
renderIrradMapCube.Draw();
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
return((uint)irradMap);
}
void RenderUIElement(UIElement element)
{
renderstate.Set(new DepthTest(true));
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
uiShader.Activate();
int hasTexture = 0;
if (element.texture != null)
{
element.texture.Activate();
hasTexture = 1;
}
uiShader.Uniform("hasTexture", hasTexture);
uiShader.Uniform("scale", element.transform.scale);
uiShader.Uniform("position", element.transform.position);
uiShader.Uniform("elementColor", element.color);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
if (element.texture != null)
{
element.texture.Deactivate();
}
uiShader.Deactivate();
GL.Disable(EnableCap.Blend);
}
public void ShowTexture2D(uint textureID)
{
textureTest.Activate();
SetSampler(textureTest.ProgramID, 0, "text", currIBLMaps.ibl_BrdfIntegraionMap);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
DeactivateTexture(0);
textureTest.Deactivate();
}
public MainVisual(IRenderState renderState, IContentLoader contentLoader)
{
renderState.Set(new DepthTest(true));
shader = contentLoader.Load <IShaderProgram>("TerrainTessellation.*");
shader.Activate();
GL.PatchParameter(PatchParameterInt.PatchVertices, 4);
}
public TessellationExample([Import] IContentLoader contentLoader, [Import] ITime time)
{
shader = contentLoader.Load <IShaderProgram>("Tessellation.*");
shader.Activate();
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Line);
GL.PatchParameter(PatchParameterInt.PatchVertices, 4);
this.time = time;
}
void RenderScene(ITexture2D scene)
{
sceneShader.Activate();
scene.Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
scene.Deactivate();
sceneShader.Deactivate();
}
public void Draw(ITexture2D inputTexture)
{
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_postProcessShader.Activate();
inputTexture.Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
inputTexture.Deactivate();
_postProcessShader.Deactivate();
_outputSurface.Deactivate();
}
public MainVisual(IRenderState renderState, IContentLoader contentLoader)
{
renderState.Set(new DepthTest(true));
shader = contentLoader.Load <IShaderProgram>("TerrainTessellation.*");
shader.Activate();
//GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Line);
GL.PatchParameter(PatchParameterInt.PatchVertices, 4);
}
public void Draw(ITransformation camera, ITexture2D materialColor, ITexture2D normals, ITexture2D position, ITexture2D shadowSurface, ITexture2D intensity, List <LightSource> lightSources)
{
if (lightSources.Count > _lightArraySizeInShader)
{
throw new ArgumentException("A maximum of " + _lightArraySizeInShader + " light sources is possible. See shader 'deferredLighting.glsl' for details.");
}
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit);
_shader.Activate();
Matrix4x4.Invert(camera.Matrix, out var invert);
_shader.Uniform("camPos", invert.Translation / invert.M44);
_shader.Uniform("hemColorTop", new Vector3(0.9f, 0.9f, 1.0f));
_shader.Uniform("hemColorBottom", new Vector3(41.0f / 255.0f, 49.0f / 255.0f, 51.0f / 255.0f));
_shader.ActivateTexture("materialColor", 0, materialColor);
_shader.ActivateTexture("normals", 1, normals);
_shader.ActivateTexture("position", 2, position);
_shader.ActivateTexture("shadowSurface", 3, shadowSurface);
_shader.ActivateTexture("intensity", 4, intensity);
var bufferObject = LightSourcesToBufferObject(lightSources);
var loc = _shader.GetResourceLocation(ShaderResourceType.RWBuffer, "Lights");
bufferObject.ActivateBind(loc);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
_shader.DeactivateTexture(4, intensity);
_shader.DeactivateTexture(3, shadowSurface);
_shader.DeactivateTexture(2, position);
_shader.DeactivateTexture(1, normals);
_shader.DeactivateTexture(0, materialColor);
_shader.Deactivate();
_outputSurface.Deactivate();
}
private void Render()
{
if (shaderProgram is null)
{
return;
}
GL.Clear(ClearBufferMask.ColorBufferBit);
shaderProgram.Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
shaderProgram.Deactivate();
}
private static void Update(IShaderProgram shaderProgram)
{
if (shaderProgram is null)
{
GL.UseProgram(0);
}
else
{
shaderProgram.Activate();
}
}
public void Draw(ITransformation camera, ITexture2D image, ITexture2D depth)
{
_outputSurface.Activate();
GL.ClearColor(Color.FromArgb(0, 0, 0, 0));
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_sphereCutProgram.Activate();
_sphereCutProgram.ActivateTexture("image", 1, image);
_sphereCutProgram.ActivateTexture("depth", 0, depth);
_sphereCutProgram.Uniform("camera", camera);
_sphereGeometry.Draw();
_sphereCutProgram.DeactivateTexture(1, image);
_sphereCutProgram.DeactivateTexture(0, depth);
_sphereCutProgram.Deactivate();
_outputSurface.Deactivate();
}
public void CreateShadowMapParticle(Camera camera, Camera lightViewCamera, Renderable geometry, Vector3 lightDir, ParticleSystem particleSystem)
{
renderState.Set(new DepthTest(true));
renderState.Set(new FaceCullingModeState(geometry.faceCullingMode));
if (geometry.hasAlphaMap == 1)
{
GL.Enable(EnableCap.Blend);
//GL.DepthMask(false);
}
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
shadowMapShaderParticle.Activate();
satFilter.GetFilterTexture().Activate();
shadowMapShaderParticle.Uniform("shadowMapExponent", shadowExponent);
shadowMapShaderParticle.Uniform("camera", camera.GetMatrix());
shadowMapShaderParticle.Uniform("cameraViewMatrix", camera.GetViewMatrix());
shadowMapShaderParticle.Uniform("lightCamera", lightViewCamera.GetMatrix());
shadowMapShaderParticle.Uniform("lightViewMatrix", lightViewCamera.GetViewMatrix());
shadowMapShaderParticle.Uniform("lightDirection", lightDir);
shadowMapShaderParticle.Uniform("hasAlphaMap", geometry.hasAlphaMap);
int normalMap = GL.GetUniformLocation(shadowMapShaderParticle.ProgramID, "normalSampler");
GL.Uniform1(normalMap, 1);
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, mainFBO.Textures[2].ID);
int alphaMap = GL.GetUniformLocation(shadowMapShaderParticle.ProgramID, "alphaSampler");
GL.Uniform1(alphaMap, 2);
GL.ActiveTexture(TextureUnit.Texture2);
if (geometry.alphaMap != null)
{
GL.BindTexture(TextureTarget.Texture2D, geometry.alphaMap.ID);
}
//particleSystem.RegisterParticleData(shadowMapShaderParticle);
geometry.GetMesh().Draw(particleSystem.NumberOfSpawnedParticles());
//GL.ActiveTexture(TextureUnit.Texture0);
//lightViewFBO.Textures[0].Deactivate();
//satFilter.GetFilterTexture().Deactivate();
shadowMapShaderParticle.Deactivate();
//GL.DepthMask(true);
GL.Disable(EnableCap.Blend);
renderState.Set(new FaceCullingModeState(FaceCullingMode.NONE));
renderState.Set(new DepthTest(false));
}
internal void Draw(ITransformation camera, Vector3 cameraPos)
{
void SetWorld(ITransformation transform) => shader.Uniform("world", transform);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
shader.Activate();
shader.Uniform(nameof(cameraPos), cameraPos);
shader.Uniform(nameof(camera), camera);
model.Draw((float)time.Elapsed.TotalSeconds, SetWorld);
shader.Deactivate();
if (time.ElapsedMilliseconds > 5000)
{
time.Restart();
}
}
public void PointLightPass(Matrix4x4 cameraMatrix, Vector3 cameraPosition, Vector3 cameraDirection)
{
pointLightFBO.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
renderState.Set(new DepthTest(false));
renderState.Set(new FaceCullingModeState(FaceCullingMode.FRONT_SIDE));
renderState.Set(BlendStates.Additive);
pointLightShader.Activate();
int position = GL.GetUniformLocation(pointLightShader.ProgramID, "positionSampler");
int albedo = GL.GetUniformLocation(pointLightShader.ProgramID, "albedoSampler");
int normal = GL.GetUniformLocation(pointLightShader.ProgramID, "normalSampler");
GL.Uniform1(position, 1);
GL.Uniform1(albedo, 2);
GL.Uniform1(normal, 3);
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, mainFBO.Textures[0].ID);
GL.ActiveTexture(TextureUnit.Texture2);
GL.BindTexture(TextureTarget.Texture2D, mainFBO.Textures[1].ID);
GL.ActiveTexture(TextureUnit.Texture3);
GL.BindTexture(TextureTarget.Texture2D, mainFBO.Textures[2].ID);
pointLightShader.Uniform("camera", cameraMatrix);
pointLightShader.Uniform("cameraPosition", cameraPosition);
pointLightShader.Uniform("camDir", cameraDirection);
GL.ActiveTexture(TextureUnit.Texture0);
pointLightFBO.Textures[0].Activate();
DrawBuffersEnum[] drawBuffers = new DrawBuffersEnum[1];
drawBuffers[0] = DrawBuffersEnum.ColorAttachment0;
GL.DrawBuffers(1, drawBuffers);
pointLightSphere.Draw(pointLightAmount);
GL.ActiveTexture(TextureUnit.Texture0);
pointLightFBO.Textures[0].Deactivate();
pointLightShader.Deactivate();
renderState.Set(BlendStates.Opaque);
renderState.Set(new FaceCullingModeState(FaceCullingMode.NONE));
renderState.Set(new DepthTest(false));
pointLightFBO.Deactivate();
}
uint CreatePrefilteredMap(int frameBuffer, Matrix4x4 projection, Matrix4x4[] viewMatrices, uint cubeMap)
{
DefaultMesh cubeMesh = Meshes.CreateCubeWithNormals();
VAO renderPrefilterCube = VAOLoader.FromMesh(cubeMesh, prefilterMapShader);
int texResX = 128;
int texResY = 128;
int prefiltMap = CreateCubeMap(texResX, texResY);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
GL.GenerateMipmap(GenerateMipmapTarget.TextureCubeMap);
prefilterMapShader.Activate();
SetSampler(prefilterMapShader.ProgramID, 0, "environmentMap", cubeMap, TextureTarget.TextureCubeMap);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
prefilterMapShader.Uniform("projection", projection, true);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
int maxMipLvl = 5;
for (int i = 0; i < maxMipLvl; i++)
{
float mipWidth = texResX * (float)Math.Pow(0.5, i);
float mipHeight = texResY * (float)Math.Pow(0.5, i);
GL.Viewport(0, 0, (int)mipWidth, (int)mipHeight);
float roughness = (float)i / (float)(maxMipLvl - 1.0);
prefilterMapShader.Uniform("roughness", roughness);
for (int j = 0; j < 6; j++)
{
prefilterMapShader.Uniform("view", viewMatrices[j], true);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.TextureCubeMapPositiveX + j, prefiltMap, i);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
renderPrefilterCube.Draw();
}
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
return((uint)prefiltMap);
}
protected void DrawPass(ITexture2D inputTexture, IRenderSurface surface, IShaderProgram shader)
{
surface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit);
shader.Activate();
inputTexture.Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
inputTexture.Deactivate();
shader.Deactivate();
surface.Deactivate();
}
private void WpfOpenGLControl_GlRender(object sender, EventArgs e)
{
if (!glControl.ValidOpenGLContext)
{
return;
}
CheckShaderReload();
shader.Activate();
//set all changed uniforms
foreach (var setter in uniformSetters.Values)
{
setter.Invoke();
}
uniformSetters.Clear();
//draw quad
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
shader.Deactivate();
}
public void CreateMaps(float time)
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
mapFBO.Activate();
waterMapShader.Activate();
waterMapShader.Uniform("time", time);
waterMapShader.Uniform("numberOfWaves", numberOfWaves);
int buffer = waterMapShader.GetResourceLocation(ShaderResourceType.RWBuffer, "WavesBuffer");
waveBuffer.ActivateBind(buffer);
//Activate Textures of FBO
int textAmount = mapFBO.Textures.Count; //Number of Texture Channels of FBO
for (int i = 0; i < textAmount; i++)
{
GL.ActiveTexture(TextureUnit.Texture0 + i);
mapFBO.Textures[i].Activate();
}
DrawBuffersEnum[] buffers = new DrawBuffersEnum[textAmount];
for (int i = 0; i < textAmount; i++)
{
buffers[i] = DrawBuffersEnum.ColorAttachment0 + i;
}
GL.DrawBuffers(textAmount, buffers);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
waveBuffer.Deactivate();
for (int i = textAmount - 1; i >= 0; i--)
{
GL.ActiveTexture(TextureUnit.Texture0 + i);
mapFBO.Textures[i].Deactivate();
}
waterMapShader.Deactivate();
mapFBO.Deactivate();
}
private new void DrawPass(ITexture2D inputTexture, IRenderSurface surface, IShaderProgram shader)
{
surface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit);
shader.Activate();
shader.Uniform("Size", _blurKernelSize);
inputTexture.Activate();
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
inputTexture.Deactivate();
shader.Deactivate();
surface.Deactivate();
}
public void Draw(ITexture2D texOne, ITexture2D texTwo, float factor = 1)
{
_outputSurface.Activate();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
_addProgram.Activate();
_addProgram.ActivateTexture("image1", 0, texOne);
_addProgram.ActivateTexture("image2", 1, texTwo);
_addProgram.Uniform("factor", factor);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
_addProgram.DeactivateTexture(1, texTwo);
_addProgram.DeactivateTexture(0, texOne);
_addProgram.Deactivate();
_outputSurface.Deactivate();
}
