protected void Blit(GLTextuer2D output, int width, int height)
{
if (temp == null)
{
temp = new GLFrameBuffer();
}
temp.Bind();
temp.BindRead();
temp.AttachColor(colorBuff, 0);
IGL.Primary.ReadBuffer((int)ReadBufferMode.ColorAttachment0);
temp.AttachColor(output, 1);
IGL.Primary.DrawBuffers(new int[] { (int)DrawBufferMode.ColorAttachment1 });
if (!temp.IsValid)
{
Log.Error("Frame buff is invalid on blit:\r\n" + Environment.StackTrace);
}
IGL.Primary.BlitFramebuffer(0, 0, width, height, 0, 0, width, height, (int)ClearBufferMask.ColorBufferBit, (int)BlitFramebufferFilter.Linear);
GLFrameBuffer.UnbindRead();
GLFrameBuffer.Unbind();
frameBuff.Bind();
}
public BasePass(MeshRenderer[] m, int w, int h)
{
Meshes = m;
color = new GLTextuer2D[2];
width = w;
height = h;
for (int i = 0; i < color.Length; i++)
{
color[i] = new GLTextuer2D(PixelInternalFormat.Rgba16f);
color[i].Bind();
color[i].SetData(IntPtr.Zero, PixelFormat.Rgba, w, h);
color[i].Linear();
color[i].ClampToEdge();
GLTextuer2D.Unbind();
}
depth = new GLRenderBuffer();
depth.Bind();
depth.SetBufferStorageAsDepth(w, h);
GLRenderBuffer.Unbind();
frame = new GLFrameBuffer();
frame.Bind();
frame.AttachColor(color[0], 0);
frame.AttachColor(color[1], 1);
frame.AttachDepth(depth);
if (!frame.IsValid)
{
Log.Error("Invalid frame buffer");
}
GLFrameBuffer.Unbind();
}
protected void CreateBuffersIfNeeded()
{
if (resizeProcessor == null)
{
resizeProcessor = new PreviewProcessor();
}
if (renderBuff == null)
{
renderBuff = new GLRenderBuffer();
renderBuff.Bind();
renderBuff.SetBufferStorageAsDepth(4096, 4096);
Console.WriteLine("render buff id: " + renderBuff.Id);
GLRenderBuffer.Unbind();
}
if (colorBuff == null)
{
//colorbuff part of the framebuffer is always Rgba32f to support all texture formats
//that could be rendered into it
colorBuff = new GLTextuer2D(PixelInternalFormat.Rgba32f);
colorBuff.Bind();
colorBuff.SetData(new float[0], PixelFormat.Rgba, 4096, 4096);
colorBuff.SetFilter((int)TextureMinFilter.Linear, (int)TextureMagFilter.Linear);
Console.WriteLine("color buff id: " + colorBuff.Id);
GLTextuer2D.Unbind();
}
if (frameBuff == null)
{
frameBuff = new GLFrameBuffer();
Console.WriteLine("frame buff id: " + frameBuff.Id);
frameBuff.Bind();
frameBuff.AttachColor(colorBuff);
frameBuff.AttachDepth(renderBuff);
GL.DrawBuffer(DrawBufferMode.ColorAttachment0);
GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
if (!frameBuff.IsValid)
{
var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
Console.WriteLine("Framebuffer not complete!!! with status: " + status);
GLFrameBuffer.Unbind();
return;
}
GLFrameBuffer.Unbind();
}
}
protected void CreateBuffersIfNeeded()
{
if (resizeProcessor == null)
{
resizeProcessor = new PreviewProcessor();
}
if (renderBuff == null)
{
renderBuff = new GLRenderBuffer();
renderBuff.Bind();
renderBuff.SetBufferStorageAsDepth(4096, 4096);
GLRenderBuffer.Unbind();
}
if (colorBuff == null)
{
//colorbuff part of the framebuffer is always Rgba32f to support all texture formats
//that could be rendered into it
colorBuff = new GLTextuer2D(PixelInternalFormat.Rgba32f);
colorBuff.Bind();
colorBuff.SetData(IntPtr.Zero, PixelFormat.Rgba, 4096, 4096);
colorBuff.Nearest();
colorBuff.Repeat();
GLTextuer2D.Unbind();
}
if (frameBuff == null)
{
frameBuff = new GLFrameBuffer();
frameBuff.Bind();
frameBuff.AttachColor(colorBuff);
frameBuff.AttachDepth(renderBuff);
IGL.Primary.DrawBuffers(new int[] { (int)DrawBufferMode.ColorAttachment0 });
IGL.Primary.ReadBuffer((int)ReadBufferMode.ColorAttachment0);
if (!frameBuff.IsValid)
{
var status = IGL.Primary.CheckFramebufferStatus((int)FramebufferTarget.Framebuffer);
GLFrameBuffer.Unbind();
return;
}
GLFrameBuffer.Unbind();
}
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Closed += ShaderTest_Closed;
var ext = GLStatics.Extensions();
gl3dcontroller = new Controller3D();
gl3dcontroller.PaintObjects = ControllerDraw;
gl3dcontroller.MatrixCalc.PerspectiveNearZDistance = 1f;
gl3dcontroller.MatrixCalc.PerspectiveFarZDistance = 1000f;
gl3dcontroller.ZoomDistance = 20F;
gl3dcontroller.Start(glwfc, new Vector3(0, 0, 0), new Vector3(110f, 0, 0f), 1F);
gl3dcontroller.KeyboardTravelSpeed = (ms, eyedist) =>
{
return((float)ms / 100.0f);
};
items.Add(new GLColorShaderWorld(), "COSW");
items.Add(new GLColorShaderObjectTranslation(), "COSOT");
items.Add(new GLTexturedShaderObjectTranslation(), "TEXOT");
{
Bitmap bmp = new Bitmap(Properties.Resources.dotted2); // demo argb copy
byte[] argbbytes = bmp.GetARGBBytes();
Bitmap copy = GLOFC.Utils.BitMapHelpers.CreateBitmapFromARGBBytes(bmp.Width, bmp.Height, argbbytes);
var tex = new GLTexture2D(copy, SizedInternalFormat.Rgba8);
items.Add(tex, "dotted2");
Bitmap bmp2 = tex.GetBitmap(inverty: false);
bmp2.Save(@"c:\code\dotted2.bmp");
}
#region coloured lines
if (true)
{
GLRenderState lines = GLRenderState.Lines(5);
rObjects.Add(items.Shader("COSW"),
GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, -0, -100), new Vector3(-100, -0, 100), new Vector3(10, 0, 0), 21),
new Color4[] { Color.White, Color.Red, Color.DarkRed, Color.DarkRed })
);
GLRenderState lines2 = GLRenderState.Lines(1);
rObjects.Add(items.Shader("COSW"),
GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines2,
GLShapeObjectFactory.CreateLines(new Vector3(-100, -0, -100), new Vector3(100, -0, -100), new Vector3(0, 0, 10), 21),
new Color4[] { Color.Orange, Color.Blue, Color.DarkRed, Color.DarkRed }));
}
if (true)
{
GLRenderState lines = GLRenderState.Lines(1);
rObjects.Add(items.Shader("COSW"),
GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, 10, -100), new Vector3(-100, 10, 100), new Vector3(10, 0, 0), 21),
new Color4[] { Color.Yellow, Color.Orange, Color.Yellow, Color.Orange })
);
rObjects.Add(items.Shader("COSW"),
GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, 10, -100), new Vector3(100, 10, -100), new Vector3(0, 0, 10), 21),
new Color4[] { Color.Yellow, Color.Orange, Color.Yellow, Color.Orange })
);
}
#endregion
#region Coloured triangles
if (true)
{
GLRenderState rc = GLRenderState.Tri();
rc.CullFace = false;
rObjects.Add(items.Shader("COSOT"), "scopen",
GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Triangles, rc,
GLCubeObjectFactory.CreateSolidCubeFromTriangles(5f),
new Color4[] { Color4.Red, Color4.Green, Color4.Blue, Color4.White, Color4.Cyan, Color4.Orange },
new GLRenderDataTranslationRotation(new Vector3(10, 3, 20))
));
}
#endregion
#region Matrix Calc Uniform
items.Add(new GLMatrixCalcUniformBlock(), "MCUB"); // def binding of 0
#endregion
#region FB
GLTexture2D ctex = new GLTexture2D();
items.Add(ctex, "drawnbitmap");
if (true)
{
int width = 1024, height = 768;
// set up FB
// NOTE: things end up inverted in Y in the texture, this is because textures are bottom up structures - seems the internet agrees
GLFrameBuffer fb = new GLFrameBuffer();
// attach a texture to draw to
ctex.CreateOrUpdateTexture(width, height, OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8, 1);
ctex.SetMinMagLinear();
fb.AttachColor(ctex, 0, 0);
GLRenderBuffer rb = new GLRenderBuffer();
items.Add(rb);
rb.Allocate(RenderbufferStorage.DepthComponent32f, ctex.Width, ctex.Height);
fb.AttachDepth(rb);
// bind Framebuffer to system for it to be the target to draw to, with a default back colour
fb.BindColor(new OpenTK.Graphics.Color4(40, 40, 40, 255));
GLMatrixCalc mc = new GLMatrixCalc();
mc.PerspectiveNearZDistance = 1f;
mc.PerspectiveFarZDistance = 1000f;
mc.ResizeViewPort(this, new Size(ctex.Width, ctex.Height));
Vector3 lookat = new Vector3(0, 0, 0);
Vector2 camerapos = new Vector2(110f, 0);
mc.CalculateModelMatrix(lookat, camerapos, 20F, 0);
mc.CalculateProjectionMatrix();
((GLMatrixCalcUniformBlock)items.UB("MCUB")).SetFull(mc);
var renderState = GLRenderState.Start();
Vector4[] p = new Vector4[4];
int size = 64;
int offset = 10;
p[0] = new Vector4(offset, offset, 0, 1); // topleft - correct winding for our system. For dotted, red/blue at top as dots
p[1] = new Vector4(offset, offset + size, 0, 1); // bottomleft
p[2] = new Vector4(offset + size, offset, 0, 1); // topright
p[3] = new Vector4(offset + size, offset + size, 0, 1); // botright
items.Add(new GLDirect(), "fbds1");
GLRenderState rts = GLRenderState.Tri();
GLRenderDataTexture rdt = new GLRenderDataTexture(items.Tex("dotted2"));
var ri = GLRenderableItem.CreateVector4(items, PrimitiveType.TriangleStrip, rts, p, rdt);
ri.Execute(items.Shader("fbds1"), renderState, mc);
GLRenderState lines = GLRenderState.Lines(1);
var l1 = GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, -0, -100), new Vector3(-100, -0, 100), new Vector3(10, 0, 0), 21),
new Color4[] { Color.Red, Color.Red, Color.DarkRed, Color.DarkRed });
l1.Execute(items.Shader("COSW"), renderState, mc);
var l2 = GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, -0, -100), new Vector3(100, -0, -100), new Vector3(0, 0, 10), 21),
new Color4[] { Color.Red, Color.Red, Color.DarkRed, Color.DarkRed });
l2.Execute(items.Shader("COSW"), renderState, mc);
var l3 = GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, 10, -100), new Vector3(-100, 10, 100), new Vector3(10, 0, 0), 21),
new Color4[] { Color.Yellow, Color.Orange, Color.Yellow, Color.Orange });
l3.Execute(items.Shader("COSW"), renderState, mc);
var l4 = GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Lines, lines,
GLShapeObjectFactory.CreateLines(new Vector3(-100, 10, -100), new Vector3(100, 10, -100), new Vector3(0, 0, 10), 21),
new Color4[] { Color.Yellow, Color.Orange, Color.Yellow, Color.Orange });
l4.Execute(items.Shader("COSW"), renderState, mc);
GLRenderState rc = GLRenderState.Tri();
rc.CullFace = false;
var ri2 = GLRenderableItem.CreateVector4Color4(items, PrimitiveType.Triangles, rc,
GLCubeObjectFactory.CreateSolidCubeFromTriangles(5f),
new Color4[] { Color4.Red, Color4.Green, Color4.Blue, Color4.White, Color4.Cyan, Color4.Orange },
new GLRenderDataTranslationRotation(new Vector3(10, 3, 20)));
ri2.Execute(items.Shader("COSOT"), renderState, mc);
GLRenderState rq = GLRenderState.Quads();
var ri3 = GLRenderableItem.CreateVector4Vector2(items, PrimitiveType.Triangles, rq,
GLShapeObjectFactory.CreateQuad(5f, 5f, new Vector3(-90F.Radians(), 0, 0)), GLShapeObjectFactory.TexQuadCW,
new GLRenderDataTranslationRotationTexture(items.Tex("dotted2"), new Vector3(10, 0, 0)));
ri3.Execute(items.Shader("TEXOT"), renderState, mc);
GLFrameBuffer.UnBind();
gl3dcontroller.MatrixCalc.SetViewPort(); // restore the view port
byte[] texdatab = ctex.GetTextureImageAs <byte>(OpenTK.Graphics.OpenGL4.PixelFormat.Bgra, 0, true);
Bitmap bmp = GLOFC.Utils.BitMapHelpers.CreateBitmapFromARGBBytes(ctex.Width, ctex.Height, texdatab);
bmp.Save(@"c:\code\out.bmp");
}
#endregion
if (true)
{
Vector4[] p = new Vector4[4];
int size = 128;
int offset = 10;
p[0] = new Vector4(offset, offset, 0, 1); // topleft - correct winding for our system. For dotted, red/blue at top as dots
p[1] = new Vector4(offset, offset + size, 0, 1); // bottomleft
p[2] = new Vector4(offset + size, offset, 0, 1); // topright
p[3] = new Vector4(offset + size, offset + size, 0, 1); // botright
items.Add(new GLDirect(), "ds1");
GLRenderState rts = GLRenderState.Tri();
GLRenderDataTexture rdt = new GLRenderDataTexture(items.Tex("dotted2"));
rObjects.Add(items.Shader("ds1"), "ds1", GLRenderableItem.CreateVector4(items, PrimitiveType.TriangleStrip, rts, p, rdt));
}
if (true)
{
GLRenderState rq = GLRenderState.Quads();
float width = 20F;
float height = 20F / ctex.Width * ctex.Height;
// TexQuadInv corrects for the inverted FB texture
rObjects.Add(items.Shader("TEXOT"),
GLRenderableItem.CreateVector4Vector2(items, PrimitiveType.Quads, rq,
GLShapeObjectFactory.CreateQuad(width, height, new Vector3(-90F.Radians(), 0, 0)), GLShapeObjectFactory.TexQuadCCW,
new GLRenderDataTranslationRotationTexture(ctex, new Vector3(-15, 0, 10))
));
}
if (true)
{
GLRenderState rq = GLRenderState.Quads();
rObjects.Add(items.Shader("TEXOT"),
GLRenderableItem.CreateVector4Vector2(items, PrimitiveType.Quads, rq,
GLShapeObjectFactory.CreateQuad(5f, 5f, new Vector3(-90F.Radians(), 0, 0)), GLShapeObjectFactory.TexQuadCW,
new GLRenderDataTranslationRotationTexture(items.Tex("dotted2"), new Vector3(10, 0, 0))
));
}
dataoutbuffer = items.NewStorageBlock(5);
dataoutbuffer.AllocateBytes(sizeof(float) * 4 * 32, OpenTK.Graphics.OpenGL4.BufferUsageHint.DynamicRead); // 32 vec4 back
}