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
}