public void RenderWithStruct(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
//if (!this.IsRenderable())
//return;
ShaderProgram shader = this.shader; //GetShader(gl, renderMode);
shader.Bind(gl);
// 用VAO+EBO进行渲染。
// Bind the out vertex array.
//gl.BindVertexArray(vao[0]);
gl.BindVertexArray(vertexArrayObject);
// Draw the square.
//gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, ebo[0]);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, this.triangleBufferObject);
// 启用Primitive restart
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);// 截断图元（四边形带、三角形带等）的索引值。
gl.DrawElements(this.primitiveMode, this.triangleIndexCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
// Unbind our vertex array and shader.
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
shader.Unbind(gl);
}
void IRenderable.Render(OpenGL gl, RenderMode renderMode)
{
if (positionBuffer != null && colorBuffer != null && radiusBuffer != null)
{
if (this.shaderProgram == null)
{
this.shaderProgram = InitShader(gl, renderMode);
}
if (this.vertexArrayObject == null)
{
CreateVertexArrayObject(gl, renderMode);
}
BeforeRendering(gl, renderMode);
if (this.RenderGrid && this.vertexArrayObject != null)
{
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(SharpGL.Enumerations.BlendingSourceFactor.SourceAlpha, SharpGL.Enumerations.BlendingDestinationFactor.OneMinusSourceAlpha);
gl.BindVertexArray(this.vertexArrayObject[0]);
gl.DrawArrays(OpenGL.GL_POINTS, 0, count);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_BLEND);
}
AfterRendering(gl, renderMode);
}
}
public void Render(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
// update matrix and bind shader program
mat4 projectionMatrix = camera.GetProjectionMat4();
mat4 viewMatrix = camera.GetViewMat4();
mat4 modelMatrix = glm.scale(mat4.identity(), new vec3(1, 1, this.ZAxisScale));
shaderProgram.Bind(gl);
shaderProgram.SetUniformMatrix4(gl, strprojectionMatrix, projectionMatrix.to_array());
shaderProgram.SetUniformMatrix4(gl, strviewMatrix, viewMatrix.to_array());
shaderProgram.SetUniformMatrix4(gl, strmodelMatrix, modelMatrix.to_array());
gl.BindVertexArray(vao[0]);
// 启用Primitive restart
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);// 截断图元（四边形带、三角形带等）的索引值。
//GL.DrawArrays(primitiveMode, 0, vertexCount);
gl.DrawElements((uint)primitiveMode, vertexCount + (this.pipe.Count - 1) * 2, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
// unbind shader program
shaderProgram.Unbind(gl);
}
public void Render(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
gl.BindVertexArray(vao[0]);
gl.DrawArrays((uint)primitiveMode, 0, vertexCount);
gl.BindVertexArray(0);
}
public void Render(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
gl.BindVertexArray(vao[0]);
//GL.DrawArrays(primitiveMode, 0, vertexCount);
gl.DrawElements((uint)primitiveMode, faceCount * 2 + 2, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
}
/// <summary>
/// 渲染此元素。
/// </summary>
/// <param name="gl"></param>
/// <param name="renderMode"></param>
public virtual void Render(SharpGL.OpenGL gl, SharpGL.SceneGraph.Core.RenderMode renderMode)
{
BeforeRendering(gl, renderMode);
ShaderProgram shader = this.shaderProgram;// GetShader(gl, renderMode);
shader.Bind(gl);
// 用VAO+EBO进行渲染。
// Bind the out vertex array.
gl.BindVertexArray(vao[0]);
gl.DrawArrays(this.primitiveMode, 0, this.primitiveCount);
// Unbind our vertex array and shader.
gl.BindVertexArray(0);
shader.Unbind(gl);
AfterRendering(gl, renderMode);
}
public BackgroundRenderer(OpenGL gl)
{
_gl = gl;
_program = new BackgroundShader(gl);
_flat = new VAO(gl);
_flatBuffer = new VBO(gl);
using (new Bind(_flat))
using (new Bind(_flatBuffer))
{
var flatData = new float[] { -1, -1, 1, -1, -1, 1, 1, 1, };
_flatBuffer.Update(flatData, flatData.Length * sizeof(float));
gl.EnableVertexAttribArray(0);
gl.VertexAttribPointer(0, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
gl.BindVertexArray(0);
}
}
public PostProcesser(OpenGL gl,int width,int height)
{
_gl = gl;
_fbo = new FBO(gl, width, height);
_flatProgram = new FlatShader(gl);
_flat = new VAO(gl);
_flatBuffer = new VBO(gl);
using (new Bind(_flat))
using (new Bind(_flatBuffer))
{
var flatData = new float[] { -1, -1, 1, -1, -1, 1, 1, 1, };
_flatBuffer.Update(flatData, flatData.Length * sizeof(float));
gl.EnableVertexAttribArray(0);
gl.VertexAttribPointer(0, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
gl.BindVertexArray(0);
}
}
public void BindAll(OpenGL gl)
{
UseProgram(gl, () =>
{
// Update uniforms.
foreach (var action in ChangedUniforms)
{
action.Invoke(gl);
}
ChangedUniforms.Clear();
foreach (var group in BufferGroups)
{
group.BindVAO(gl);
gl.DrawElements(OpenGL.GL_TRIANGLES, group.IndicesCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
}
});
}
private void CreateVertexArrayObject(OpenGL gl, RenderMode renderMode)
{
if (this.positionBuffer == null || this.colorBuffer == null) { return; }
this.vertexArrayObject = new uint[1];
gl.GenVertexArrays(1, this.vertexArrayObject);
gl.BindVertexArray(this.vertexArrayObject[0]);
// prepare positions
{
int location = shaderProgram.GetAttributeLocation(gl, in_Position);
ATTRIB_INDEX_POSITION = (uint)location;
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, positionBuffer[0]);
gl.VertexAttribPointer(ATTRIB_INDEX_POSITION, 3, OpenGL.GL_FLOAT, false, 0, IntPtr.Zero);
gl.EnableVertexAttribArray(ATTRIB_INDEX_POSITION);
}
// prepare colors
{
int location = shaderProgram.GetAttributeLocation(gl, in_uv);
ATTRIB_INDEX_UV = (uint)location;
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, colorBuffer[0]);
gl.VertexAttribPointer(ATTRIB_INDEX_UV, 1, OpenGL.GL_FLOAT, false, 0, IntPtr.Zero);
gl.EnableVertexAttribArray(ATTRIB_INDEX_UV);
}
gl.BindVertexArray(0);
}
void IRenderable.Render(OpenGL gl, RenderMode renderMode)
{
if (positionBuffer == null || colorBuffer == null) { return; }
if (this.shaderProgram == null)
{
this.shaderProgram = InitShader(gl, renderMode);
}
if (this.vertexArrayObject == null)
{
CreateVertexArrayObject(gl, renderMode);
}
BeforeRendering(gl, renderMode);
if (this.RenderGridWireframe && this.vertexArrayObject != null)
{
//if (wireframeIndexBuffer != null)
if (positionBuffer != null && colorBuffer != null && indexBuffer != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 1.0f);// shader一律上白色。
gl.Disable(OpenGL.GL_LINE_STIPPLE);
gl.Disable(OpenGL.GL_POLYGON_STIPPLE);
gl.Enable(OpenGL.GL_LINE_SMOOTH);
gl.Enable(OpenGL.GL_POLYGON_SMOOTH);
gl.ShadeModel(SharpGL.Enumerations.ShadeModel.Smooth);
gl.Hint(SharpGL.Enumerations.HintTarget.LineSmooth, SharpGL.Enumerations.HintMode.Nicest);
gl.Hint(SharpGL.Enumerations.HintTarget.PolygonSmooth, SharpGL.Enumerations.HintMode.Nicest);
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Lines);
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(SharpGL.Enumerations.BlendingSourceFactor.SourceAlpha, SharpGL.Enumerations.BlendingDestinationFactor.OneMinusSourceAlpha);
gl.BindVertexArray(this.vertexArrayObject[0]);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, indexBuffer[0]);
gl.DrawElements(OpenGL.GL_QUAD_STRIP, this.indexBufferLength, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_BLEND);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Filled);
gl.Disable(OpenGL.GL_POLYGON_SMOOTH);
}
}
if (this.RenderGrid && this.vertexArrayObject != null)
{
if (positionBuffer != null && colorBuffer != null && indexBuffer != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 0.0f);// shader根据uv buffer来上色。
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(SharpGL.Enumerations.BlendingSourceFactor.SourceAlpha, SharpGL.Enumerations.BlendingDestinationFactor.OneMinusSourceAlpha);
gl.BindVertexArray(this.vertexArrayObject[0]);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, indexBuffer[0]);
gl.DrawElements(OpenGL.GL_QUAD_STRIP, this.indexBufferLength, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_BLEND);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
}
}
AfterRendering(gl, renderMode);
}
public void PrepareNMVAO(OpenGL gl, NormalMaterialProgram program)
{
var vertArrIds = new uint[1];
gl.GenVertexArrays(1, vertArrIds);
VaoNM = vertArrIds[0];
gl.BindVertexArray(VaoNM);
BindNMVBOs(gl, program);
gl.EnableVertexAttribArray(0);
gl.BindVertexArray(0);
}
public void BindHTVAO(OpenGL gl)
{
gl.BindVertexArray(VaoHT);
}
public void BindNMVAO(OpenGL gl)
{
gl.BindVertexArray(VaoNM);
}
public void PrepareHTVAO(OpenGL gl, HitTestProgram program)
{
var vertArrIds = new uint[1];
gl.GenVertexArrays(1, vertArrIds);
VaoHT = vertArrIds[0];
gl.BindVertexArray(VaoHT);
BindHTVBOs(gl, program);
gl.EnableVertexAttribArray(0);
gl.BindVertexArray(0);
}
private void DoRenderFraction(OpenGL gl, RenderMode renderMode)
{
if (this.fractionPositionBuffer == null || this.fractionUVBuffer == null) { return; }
if (this.RenderFraction && this.fractionVertexArrayObject != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 0.0f);
gl.Enable(OpenGL.GL_POLYGON_OFFSET_FILL);
gl.PolygonOffset(1.0f, 1.0f);
gl.BindVertexArray(fractionVertexArrayObject[0]);
switch (this.FractionType)
{
case FractureFormat.Line:
float[] originalWidth = new float[1];
gl.GetFloat(SharpGL.Enumerations.GetTarget.LineWidth, originalWidth);
gl.LineWidth(this.FractionLineWidth);
gl.DrawArrays(OpenGL.GL_LINES, 0, this.FractionVertexCount);
gl.LineWidth(originalWidth[0]);
break;
case FractureFormat.Triange:
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, this.FractionVertexCount);
break;
case FractureFormat.Quad:
gl.DrawArrays(OpenGL.GL_QUADS, 0, this.FractionVertexCount);
break;
default:
throw new NotImplementedException();
//break;
}
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_POLYGON_OFFSET_FILL);
}
if (this.renderFractionWireframe && this.fractionVertexArrayObject != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 1.0f);
gl.BindVertexArray(fractionVertexArrayObject[0]);
{
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Lines);
switch (this.FractionType)
{
case FractureFormat.Line:
gl.DrawArrays(OpenGL.GL_LINES, 0, this.FractionVertexCount);
break;
case FractureFormat.Triange:
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, this.FractionVertexCount);
break;
case FractureFormat.Quad:
gl.DrawArrays(OpenGL.GL_QUADS, 0, this.FractionVertexCount);
break;
default:
break;
}
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Filled);
}
gl.BindVertexArray(0);
}
}
/// <summary>
/// 渲染基质
/// </summary>
/// <param name="gl"></param>
/// <param name="renderMode"></param>
private void DoRenderMatrix(OpenGL gl, RenderMode renderMode)
{
if (this.positionBuffer == null || this.colorBuffer == null) { return; }
if (this.RenderGrid && this.matrixVertexArrayObject != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 0.0f);
shaderProgram.SetUniform1(gl, "opacity", this.Opacity);
gl.Enable(OpenGL.GL_POLYGON_OFFSET_FILL);
gl.PolygonOffset(1.0f, 1.0f);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(SharpGL.Enumerations.BlendingSourceFactor.SourceAlpha, SharpGL.Enumerations.BlendingDestinationFactor.OneMinusSourceAlpha);
gl.BindVertexArray(matrixVertexArrayObject[0]);
switch (this.MatrixType)
{
case MatrixFormat.Triangle:
gl.DrawArrays(this.matrixRenderMode, 0, this.MatrixVertexOrIndexCount);
break;
case MatrixFormat.Tetrahedron:
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, this.matrixIndexBuffer[0]);
gl.DrawElements(this.matrixRenderMode, this.MatrixVertexOrIndexCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
break;
case MatrixFormat.TriangularPrism:
// 先渲染三棱柱的上下三角形
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, this.MatrixVertexOrIndexCount);
// 再渲染三棱柱的三个侧面
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, this.matrixIndexBuffer[0]);
gl.DrawElements(this.matrixRenderMode, this.MatrixVertexOrIndexCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
break;
default:
break;
}
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_BLEND);
gl.Disable(OpenGL.GL_POLYGON_OFFSET_FILL);
}
if (this.RenderGridWireframe && this.matrixVertexArrayObject != null)
{
shaderProgram.SetUniform1(gl, "renderingWireframe", 1.0f);
shaderProgram.SetUniform1(gl, "opacity", this.Opacity);
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Lines);
gl.Enable(OpenGL.GL_BLEND);
gl.BlendFunc(SharpGL.Enumerations.BlendingSourceFactor.SourceAlpha, SharpGL.Enumerations.BlendingDestinationFactor.OneMinusSourceAlpha);
gl.BindVertexArray(matrixVertexArrayObject[0]);
switch (this.MatrixType)
{
case MatrixFormat.Triangle:
gl.DrawArrays(this.matrixRenderMode, 0, this.MatrixVertexOrIndexCount);
break;
case MatrixFormat.Tetrahedron:
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, this.matrixIndexBuffer[0]);
gl.DrawElements(this.matrixRenderMode, this.MatrixVertexOrIndexCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
break;
case MatrixFormat.TriangularPrism:
// 先渲染三棱柱的上下三角形
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, this.MatrixVertexOrIndexCount / 9 * 6);
// 再渲染三棱柱的三个侧面
gl.Enable(OpenGL.GL_PRIMITIVE_RESTART);
gl.PrimitiveRestartIndex(uint.MaxValue);
gl.BindBuffer(OpenGL.GL_ELEMENT_ARRAY_BUFFER, this.matrixIndexBuffer[0]);
gl.DrawElements(this.matrixRenderMode, this.MatrixVertexOrIndexCount, OpenGL.GL_UNSIGNED_INT, IntPtr.Zero);
gl.Disable(OpenGL.GL_PRIMITIVE_RESTART);
break;
default:
break;
}
gl.PolygonMode(SharpGL.Enumerations.FaceMode.FrontAndBack, SharpGL.Enumerations.PolygonMode.Filled);
gl.BindVertexArray(0);
gl.Disable(OpenGL.GL_BLEND);
}
}
private void PlaySound()
{
try
{
gl.GenVertexArrays(1, vao);
gl.BindVertexArray(vao[0]);
gl.GenBuffers(1, vbo);
float[] vertices = new float[] {
-1.0f, 1.0f,
1.0f, 1.0f,
1.0f, -1.0f,
-1.0f, 1.0f,
-1.0f, -1.0f,
1.0f, -1.0f
};
gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, vbo[0]);
unsafe
{
fixed(float *verts = vertices)
{
var ptr = new IntPtr(verts);
// fill the buffer to the currently binded buffer
gl.BufferData(OpenGL.GL_ARRAY_BUFFER, vertices.Length * sizeof(float), ptr, OpenGL.GL_STATIC_DRAW);
}
}
// Create the shader program.
var vertexShaderSource = ManifestResourceLoader.LoadTextFile("SoundShader.vert");
var fragmentShaderSource = ManifestResourceLoader.LoadTextFile("SoundShader.frag");
vertexShader = gl.CreateShader(OpenGL.GL_VERTEX_SHADER);
gl.ShaderSource(vertexShader, vertexShaderSource);
gl.CompileShader(vertexShader);
// Create and compile the fragment shader
fragmentShader = gl.CreateShader(OpenGL.GL_FRAGMENT_SHADER);
gl.ShaderSource(fragmentShader, fragmentShaderSource);
gl.CompileShader(fragmentShader);
// Link the vertex and fragment shader into a shader program
shaderProgram = gl.CreateProgram();
gl.AttachShader(shaderProgram, vertexShader);
gl.AttachShader(shaderProgram, fragmentShader);
gl.BindFragDataLocation(shaderProgram, (uint)0, "gl_FragColor");
gl.LinkProgram(shaderProgram);
int[] infoLength = new int[] { 0 };
int bufSize = infoLength[0];
// Get the compile info.
StringBuilder il = new StringBuilder(bufSize);
gl.GetProgramInfoLog(shaderProgram, bufSize, IntPtr.Zero, il);
gl.UseProgram(shaderProgram);
posAttrib = gl.GetAttribLocation(shaderProgram, "position");
gl.EnableVertexAttribArray((uint)posAttrib);
gl.VertexAttribPointer((uint)posAttrib, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
timeLoc = gl.GetUniformLocation(shaderProgram, "iGlobalTime");
sampleLoc = gl.GetUniformLocation(shaderProgram, "Spectrum");
waveLoc = gl.GetUniformLocation(shaderProgram, "Wavedata");
int resLoc = gl.GetUniformLocation(shaderProgram, "iResolution");
gl.Uniform3(resLoc, (float)this.openGLControl1.Width, (float)this.openGLControl1.Height, (float)(this.openGLControl1.Width * this.openGLControl1.Height));
Thread thread = new Thread(() => PlaySoundT(((USound)selectedObject).SoundBuffer));
thread.Start();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine(e.StackTrace.ToString());
}
}
public void PrepareVAO(OpenGL gl, LinesProgram program)
{
var vertArrIds = new uint[1];
gl.GenVertexArrays(1, vertArrIds);
Vao = vertArrIds[0];
gl.BindVertexArray(Vao);
BindVBOs(gl, program);
gl.EnableVertexAttribArray(0);
gl.BindVertexArray(0);
}
public void BindVAO(OpenGL gl)
{
var isBuffer = new bool[]
{
gl.IsBuffer(Vao),
gl.IsBuffer(Ibo),
gl.IsBuffer(Position),
gl.IsBuffer(Normal),
gl.IsBuffer(Vao),
gl.IsBuffer(Vao),
gl.IsBuffer(Vao),
gl.IsBuffer(Vao),
};
gl.BindVertexArray(Vao);
}
public OctreeRenderer(OctreeModel model, OpenGL gl)
{
_gl = gl;
_octreeProgram = new OctreeShader(gl);
_cubes = new VAO(gl);
_cubeBuffer = new VBO(gl);
var filled = model.Node.Flatten().Where(o => o.State == NodeState.Filled).ToArray();
_count = filled.Length;
var list = new List<float>();
foreach (var octreeNode in filled)
{
list.AddRange(octreeNode.Center.ToArray().Select(d => (float)d));
list.AddRange(new[]
{
(float)MathsHelper.Map(octreeNode.Color.R, 0, 255, 0, 1),
(float)MathsHelper.Map(octreeNode.Color.G, 0, 255, 0, 1),
(float)MathsHelper.Map(octreeNode.Color.B, 0, 255, 0, 1),
(float)MathsHelper.Map(octreeNode.Color.A, 0, 255, 0, 1),
(float)octreeNode.Size
});
}
var vertices = list.ToArray();
using (new Bind(_cubes))
using (new Bind(_cubeBuffer))
{
_cubeBuffer.Update(vertices, vertices.Length * sizeof(float));
const int stride = sizeof(float) * 8;
gl.EnableVertexAttribArray(0);
gl.VertexAttribPointer(0, 3, OpenGL.GL_FLOAT, false, stride, new IntPtr(0));
gl.EnableVertexAttribArray(1);
gl.VertexAttribPointer(1, 4, OpenGL.GL_FLOAT, false, stride, new IntPtr(sizeof(float) * 3));
gl.EnableVertexAttribArray(2);
gl.VertexAttribPointer(2, 1, OpenGL.GL_FLOAT, false, stride, new IntPtr(sizeof(float) * 7));
gl.BindVertexArray(0);
}
}
private void runGlThread(object args)
{
var inputs = (Tuple<CancellationToken>) args;
var cancelToken = inputs.Item1;
var gl = new OpenGL();
int localRenderWidth = 1;
int localRenderHeight = 1;
if (!createRenderContext(gl, localRenderWidth, localRenderHeight))
{
//TODO better error handling here
Console.WriteLine("*** Unable to create OpenGL Render Context");
return;
}
uint activeVaoHandle;
uint activeGlProgramHandle;
initGLObjects(gl, out activeVaoHandle, out activeGlProgramHandle);
ActiveProgramValues localActiveProgramValues = null;
while (!cancelToken.IsCancellationRequested)
{
bool resizeRenderContext;
lock (this)
{
if (!ReferenceEquals(localActiveProgramValues, activeProgramValues))
{
localActiveProgramValues = activeProgramValues;
if (localActiveProgramValues.Valid)
{
linkProgram(gl, localActiveProgramValues, activeGlProgramHandle);
} else
{
// Leave the old program running. This prevents the user from seeing
// a black screen while they are in the process of modifying a shader.
}
}
resizeRenderContext = localRenderWidth != renderWidth || localRenderHeight != renderHeight;
localRenderWidth = renderWidth;
localRenderHeight = renderHeight;
}
if (resizeRenderContext)
{
localActiveProgramValues = null;
deleteGlObjects(gl, activeVaoHandle, activeGlProgramHandle);
if (!createRenderContext(gl, localRenderWidth, localRenderHeight))
{
//TODO better error handling here
Console.WriteLine("*** Unable to resize OpenGL Render Context");
return;
}
initGLObjects(gl, out activeVaoHandle, out activeGlProgramHandle);
}
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT);
gl.BindVertexArray(activeVaoHandle);
gl.UseProgram(activeGlProgramHandle);
gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3);
// do some other stuff while the image is rendering, to give it a chance to finish
ShaderCompiler.ValidateShaders(gl);
var provider = gl.RenderContextProvider as FBORenderContextProvider;
Debug.Assert(provider != null, "Render context provider is not an FBO renderer");
//TODO this call to blit will probably block. Find a better way to copy the image to CPU memory.
gl.Blit(IntPtr.Zero);
var hBitmap = provider.InternalDIBSection.HBitmap;
if (hBitmap != IntPtr.Zero)
{
var bitmap = GetFormattedBitmapSource(hBitmap);
// the bitmap needs to be frozen in order to share it between threads
bitmap.Freeze();
ImageRendered(bitmap);
}
}
deleteGlObjects(gl, activeVaoHandle, activeGlProgramHandle);
}
