/// <summary>
/// Constructor
/// </summary>
/// <param name="tex">Texture to use for sprite</param>
/// <param name="maxsize">Maximum size of sprite</param>
/// <param name="scale">Scalar for sprite vs disatance</param>
public GLPointSpriteShader(IGLTexture tex, float maxsize = 120, float scale = 80) : base()
{
StartAction = (a, m) =>
{
tex.Bind(4);
};
CompileLink(vert, frag: frag, vertexconstvars: new object[] { "maxsize", maxsize, "scale", scale });
}
// Demonstrate buffer feedback AND geo shader add vertex/dump vertex
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Closed += ShaderTest_Closed;
gl3dcontroller = new Controller3D();
gl3dcontroller.PaintObjects = ControllerDraw;
gl3dcontroller.ZoomDistance = 100F;
gl3dcontroller.MatrixCalc.PerspectiveNearZDistance = 0.1f;
glwfc.BackColor = Color.FromArgb(0, 0, 60);
gl3dcontroller.Start(glwfc, new Vector3(0, 0, 0), new Vector3(120f, 0, 0f), 1F);
gl3dcontroller.KeyboardTravelSpeed = (ms, eyedist) =>
{
return((float)ms / 20.0f);
};
IGLTexture array2d = items.Add(new GLTexture2DArray(new Bitmap[] { Properties.Resources.mipmap, Properties.Resources.mipmap2,
Properties.Resources.mipmap3, Properties.Resources.mipmap4 }, SizedInternalFormat.Rgba8, 9), "2DArray2");
if (true)
{
items.Add(new GLMultipleTexturedBlended(false, 2), "ShaderPos");
items.Shader("ShaderPos").StartAction += (s, m) =>
{
array2d.Bind(1);
};
Vector4[] instancepositions = new Vector4[4];
instancepositions[0] = new Vector4(-25, 0, -40, 0); // last is image index..
instancepositions[1] = new Vector4(-25, 0, 0, 0);
instancepositions[2] = new Vector4(-25, 0, 40, 2);
instancepositions[3] = new Vector4(-25, 0, 80, 2);
GLRenderState rt = GLRenderState.Tri(cullface: false);
rObjects.Add(items.Shader("ShaderPos"),
GLRenderableItem.CreateVector4Vector2Vector4(items, PrimitiveType.Triangles, rt,
GLSphereObjectFactory.CreateTexturedSphereFromTriangles(3, 20.0f),
instancepositions, ic: 4, separbuf: true
));
}
// Shader MAT
if (true)
{
IGLProgramShader smat = items.Add(new GLMultipleTexturedBlended(true, 2), "ShaderMat");
smat.StartAction += (s, m) =>
{
array2d.Bind(1);
};
Matrix4[] pos2 = new Matrix4[3];
pos2[0] = Matrix4.CreateRotationY(-80f.Radians());
pos2[0] *= Matrix4.CreateTranslation(new Vector3(25, 0, -40));
pos2[0].M44 = 0; // this is the image number
pos2[1] = Matrix4.CreateRotationY(-70f.Radians());
pos2[1] *= Matrix4.CreateTranslation(new Vector3(25, 0, 0));
pos2[1].M44 = 2; // this is the image number
pos2[2] = Matrix4.CreateRotationZ(-60f.Radians());
pos2[2] *= Matrix4.CreateTranslation(new Vector3(25, 0, 40));
pos2[2].M44 = 0; // this is the image number
GLRenderState rq = GLRenderState.Quads(cullface: false);
rObjects.Add(items.Shader("ShaderMat"),
GLRenderableItem.CreateVector4Vector2Matrix4(items, PrimitiveType.Quads, rq,
GLShapeObjectFactory.CreateQuad(20.0f, 20.0f, new Vector3(-90f.Radians(), 0, 0)), GLShapeObjectFactory.TexQuadCW,
pos2, ic: 3, separbuf: false
));
}
items.Add(new GLMatrixCalcUniformBlock(), "MCUB"); // def binding of 0
}
public void CreateObjects(GLItemsList items, GLRenderProgramSortedList rObjects, GalacticMapping galmap, GLStorageBlock findbufferresults, bool depthtest)
{
this.galmap = galmap;
// first gets the images and make a 2d array texture for them
Bitmap[] images = galmap.RenderableMapTypes.Select(x => x.Image as Bitmap).ToArray();
// 256 is defined normal size
var objtex = new GLTexture2DArray(images, bmpmipmaplevels: 1, wantedmipmaplevels: 3, texturesize: new Size(256, 256), internalformat: OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8, alignment: ContentAlignment.BottomCenter);
IGLTexture texarray = items.Add(objtex, "GalObjTex");
// now build the shaders
const int texbindingpoint = 1;
var vert = new GLPLVertexScaleLookat(rotatetoviewer: dorotate, rotateelevation: doelevation, // a look at vertex shader
autoscale: 500, autoscalemin: 1f, autoscalemax: 20f); // below 500, 1f, above 500, scale up to 20x
var tcs = new GLPLTesselationControl(40f);
tes = new GLPLTesselationEvaluateSinewave(1f, 2f); // this uses the world position from the vertex scaler to position the image, w controls image + animation (b16)
var frag = new GLPLFragmentShaderTexture2DDiscard(texbindingpoint); // binding - takes image pos from tes. imagepos < 0 means discard
objectshader = new GLShaderPipeline(vert, tcs, tes, null, frag);
items.Add(objectshader);
objectshader.StartAction += (s, m) =>
{
texarray.Bind(texbindingpoint); // bind tex array to, matching above
};
// now the RenderControl for the objects
GLRenderState rt = GLRenderState.Patches(4);
rt.DepthTest = depthtest;
// create a quad and all entries of the renderable map objects, zero at this point, with a zero instance count. UpdateEnables will fill it in later
// but we need to give it the maximum buffer length at this point
const float objsize = 10.0f; // size of object on screen
ridisplay = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Patches, rt,
GLShapeObjectFactory.CreateQuadTriStrip(objsize, objsize), // quad2 4 vertexts
new Vector4[galmap.RenderableMapObjects.Length], // world positions
ic: 0, seconddivisor: 1);
modelworldbuffer = items.LastBuffer();
int modelpos = modelworldbuffer.Positions[0];
worldpos = modelworldbuffer.Positions[1];
rObjects.Add(objectshader, "galmapobj", ridisplay);
// add a find shader to look them up
var geofind = new GLPLGeoShaderFindTriangles(findbufferresults, 16);
findshader = items.NewShaderPipeline(null, vert, tcs, tes, geofind, null, null, null);
// hook to modelworldbuffer, at modelpos and worldpos. UpdateEnables will fill in instance count
rifind = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Patches, GLRenderState.Patches(4), modelworldbuffer, modelpos, ridisplay.DrawCount,
modelworldbuffer, worldpos, null, ic: 0, seconddivisor: 1);
GLStatics.Check();
// Text renderer for the labels
textrenderer = new GLBitmaps("bm-galmapobjects", rObjects, new Size(128, 40), depthtest: depthtest, cullface: false, textureformat: OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8);
items.Add(textrenderer);
// now make the text up for all the objects above
using (Font fnt = new Font("Arial", 8.5F))
{
using (StringFormat fmt = new StringFormat())
{
fmt.Alignment = StringAlignment.Center;
var renderablegalmapobjects = galmap.RenderableMapObjects; // list of enabled entries
List <Vector3> posset = new List <Vector3>();
float offscale = objsize * (0.5f + (float)textrenderer.BitmapSize.Height / (float)textrenderer.BitmapSize.Width / 2); // this is the nominal centre of the text bitmap, offset in Y to the object
for (int i = 0; i < renderablegalmapobjects.Length; i++)
{
var o = renderablegalmapobjects[i];
float offset = -offscale;
for (int j = 0; j < i; j++) // look up previous ones and see if we labeled it before
{
var d1 = new Vector3(o.points[0].X, o.points[0].Y + offset, o.points[0].Z);
var d2 = posset[j]; // where it was placed.
var diff = d1 - d2;
if (diff.Length < offscale) // close
{
if (offset > 0) // if offset is positive, flip below and increase again
{
offset = -offset - offscale;
}
else
{
offset *= -1; // flip over top
}
// System.Diagnostics.Debug.WriteLine($"close {renderablegalmapobjects[i].name} {d1} to {renderablegalmapobjects[j].name} {d2} {diff} select {offset}");
}
}
Vector3 pos = new Vector3(o.points[0].X, o.points[0].Y + offset, o.points[0].Z);
posset.Add(pos);
//System.Diagnostics.Debug.WriteLine($"{renderablegalmapobjects[i].name} at {pos} {offset}");
textrenderer.Add(o.id, o.name, fnt,
Color.White, Color.FromArgb(0, 255, 0, 255),
pos,
new Vector3(objsize, 0, 0), new Vector3(0, 0, 0), textformat: fmt, rotatetoviewer: dorotate, rotateelevation: doelevation,
alphafadescalar: -100, alphafadepos: 500); // fade in, alpha = 0 at >500, 1 at 400
}
}
}
UpdateEnables(); // fill in worldpos's and update instance count, taking into
}
public ShaderV2(IGLTexture t)
{
CompileLink(vertex: vcode, frag: fcode, geo: "#include TestOpenTk.Volumetrics.volumetricgeo6.glsl");
StartAction += (a, m) => { t.Bind(1); };
}