protected override void OnLoad(EventArgs e)
{
VSync = VSyncMode.On;
GL.ClearColor(0.1f, 0.2f, 0.5f, 0.0f);
GL.Enable(EnableCap.DepthTest);
float aspectRatio = ClientSize.Width / (float)(ClientSize.Height);
Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, aspectRatio, 1, 100, out projectionMatrix);
modelviewMatrix = Matrix4.LookAt(new Vector3(0, 3, 5), new Vector3(0, 0, 0), new Vector3(0, 1, 0));
shader = new Program(vertexShaderSource, fragmentShaderSource);
shader.Bind();
shader.UniformMatrix4("camera", false, ref projectionMatrix);
shader.UniformMatrix4("model", false, ref modelviewMatrix);
shader.Unbind();
positionVbo = VertexBuffer.Create(VertexFormat.PositionTexture, positionVboData);
//normalVbo = VertexBuffer.Create(new VertexFormat(new List<VertexAttribute>() { new VertexAttribute(VertexUsage.TextureCoordinate, VertexAttribPointerType.Float, 0, 2) }), textureVboData);
indexVbo = IndexBuffer.Create(indicesVboData);
vao = new VertexArray(positionVbo, indexVbo);
Utilities.CheckGLError();
vao.AddBinding(shader.VertexAttribute("vert").Slot, VertexUsage.Position);
vao.AddBinding(shader.VertexAttribute("vertTexCoord").Slot, VertexUsage.TextureCoordinate);
Utilities.CheckGLError();
Bitmap bmp = new Bitmap(@"..\..\..\Resources\wooden-crate.jpg");
texture = Texture2D.Create(bmp, TextureMinFilter.Linear, TextureMagFilter.Linear);
}
protected override void OnLoad(EventArgs e)
{
VSync = VSyncMode.On;
GL.ClearColor(0.1f, 0.2f, 0.5f, 0.0f);
GL.Enable(EnableCap.DepthTest);
float aspectRatio = ClientSize.Width / (float)(ClientSize.Height);
Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, aspectRatio, 1, 100, out projectionMatrix);
modelviewMatrix = Matrix4.LookAt(new Vector3(0, 3, 5), new Vector3(0, 0, 0), new Vector3(0, 1, 0));
shader = new Program(vertexShaderSource, fragmentShaderSource);
shader.Bind();
shader.UniformMatrix4("projection_matrix", false, ref projectionMatrix);
shader.UniformMatrix4("modelview_matrix", false, ref modelviewMatrix);
shader.Unbind();
positionVbo = VertexBuffer.Create(new VertexFormat(new List <VertexAttribute>()
{
new VertexAttribute(VertexUsage.Position, VertexAttribPointerType.Float, 0, 3)
}), positionVboData);
normalVbo = VertexBuffer.Create(new VertexFormat(new List <VertexAttribute>()
{
new VertexAttribute(VertexUsage.Normal, VertexAttribPointerType.Float, 0, 3)
}), positionVboData);
indexVbo = IndexBuffer.Create(indicesVboData);
vao = new VertexArray(positionVbo, indexVbo);
Utilities.CheckGLError();
vao.AddBinding(shader.VertexAttribute("in_position").Slot, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
vao.AddBinding(shader.VertexAttribute("in_normal").Slot, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
Utilities.CheckGLError();
}
protected override void OnLoad(EventArgs e)
{
VSync = VSyncMode.On;
GL.ClearColor(0.1f, 0.2f, 0.5f, 0.0f);
GL.Enable(EnableCap.DepthTest);
float aspectRatio = ClientSize.Width / (float)(ClientSize.Height);
Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, aspectRatio, 1, 100, out projectionMatrix);
modelviewMatrix = Matrix4.LookAt(new Vector3(0, 3, 5), new Vector3(0, 0, 0), new Vector3(0, 1, 0));
//shader = new Program(vertexShaderSource, fragmentShaderSource);
//shader.Bind();
//shader.UniformMatrix4("camera", false, ref projectionMatrix);
//shader.UniformMatrix4("model", false, ref modelviewMatrix);
//shader.Unbind();
ContentManager content = new ContentManager(new ServiceProvider(), "content");
content.RegisterTypeReader <Texture2D>(new Texture2DReader());
content.RegisterTypeReader <Program>(new ShaderSourceReader());
texture = content.Get <Texture2D>("\\wooden-crate.meb").Content as Texture2D;
shader = content.Get <Program>("\\simpleTextureShader.meb").Content as Program;
shader.Bind();
shader.UniformMatrix4("camera", false, ref projectionMatrix);
shader.UniformMatrix4("model", false, ref modelviewMatrix);
shader.Unbind();
positionVbo = VertexBuffer.Create(VertexFormat.PositionTexture, positionVboData);
//normalVbo = VertexBuffer.Create(new VertexFormat(new List<VertexAttribute>() { new VertexAttribute(VertexUsage.TextureCoordinate, VertexAttribPointerType.Float, 0, 2) }), textureVboData);
indexVbo = IndexBuffer.Create(indicesVboData);
vao = new VertexArray(positionVbo, indexVbo);
Utilities.CheckGLError();
vao.AddBinding(shader.VertexAttribute("vert").Slot, VertexUsage.Position);
vao.AddBinding(shader.VertexAttribute("vertTexCoord").Slot, VertexUsage.TextureCoordinate);
Utilities.CheckGLError();
}
protected void DrawString(int x, int y, string s, BitmapFont font, int size)
{
float curX = x;
float curY = y;
List <VertexPositionTexture> vertexData = new List <VertexPositionTexture>();
List <int> indexData = new List <int>();
float scale = size / (float)font.CharacterSet.RenderedSize;
int i = 0;
bool firstCharacter = true;
foreach (char c in s)
{
BitmapCharacter bc = font.CharacterSet.GetCharacterByID((int)c);
float xOffset = bc.XOffset * scale;
float yOffset = bc.YOffset * scale;
float xAdvance = bc.XAdvance * scale;
float width = bc.Width * scale;
float height = bc.Height * scale;
// create the quads triangles for this character
// uper left
//vertexData.Add(new VertexPositionTexture(curX + (bc.XOffset + font.CharacterSet.PaddingLeft )* scale, curY + (font.Ascent - bc.YOffset - font.CharacterSet.PaddingUp) * scale, 0, (float)bc.X / (float)font.CharacterSet.Width, (float)bc.Y / (float)font.CharacterSet.Height));
vertexData.Add(new VertexPositionTexture(curX + xOffset, curY + yOffset, 0, (float)bc.X / (float)font.CharacterSet.Width, (float)bc.Y / (float)font.CharacterSet.Height));
// upper right
//vertexData.Add(new VertexPositionTexture(curX + width, curY + (font.Ascent - bc.YOffset - font.CharacterSet.PaddingUp) * scale, 0, (float)(bc.X + bc.Width) / (float)font.CharacterSet.Width, (float)bc.Y / (float)font.CharacterSet.Height));
vertexData.Add(new VertexPositionTexture(curX + xOffset + width, curY + yOffset, 0, (float)(bc.X + bc.Width) / (float)font.CharacterSet.Width, (float)bc.Y / (float)font.CharacterSet.Height));
// lower right
//vertexData.Add(new VertexPositionTexture(curX + bc.Width * scale + bc.XOffset * scale, curY + (font.Ascent - bc.YOffset + bc.Height) * scale, 0, (float)(bc.X + bc.Width) / (float)font.CharacterSet.Width, (float)(bc.Y + bc.Height) / (float)font.CharacterSet.Height));
vertexData.Add(new VertexPositionTexture(curX + xOffset + width, curY + yOffset + height, 0, (float)(bc.X + bc.Width) / (float)font.CharacterSet.Width, (float)(bc.Y + bc.Height) / (float)font.CharacterSet.Height));
// lower left
//vertexData.Add(new VertexPositionTexture(curX + bc.XOffset * scale, curY + (font.Ascent - bc.YOffset + bc.Height) * scale, 0, (float)bc.X / (float)font.CharacterSet.Width, (float)(bc.Y + bc.Height) / (float)font.CharacterSet.Height));
vertexData.Add(new VertexPositionTexture(curX + xOffset, curY + yOffset + height, 0, (float)bc.X / (float)font.CharacterSet.Width, (float)(bc.Y + bc.Height) / (float)font.CharacterSet.Height));
indexData.Add(i);
indexData.Add(i + 1);
indexData.Add(i + 2);
indexData.Add(i + 2);
indexData.Add(i + 3);
indexData.Add(i);
i += 4;
curX += bc.XAdvance * scale;
}
VertexBuffer positionVbo = VertexBuffer.Create(VertexFormat.PositionTexture, vertexData.ToArray());
IndexBuffer indexVbo = IndexBuffer.Create(indexData.ToArray());
VertexArray vao = new VertexArray(positionVbo, indexVbo);
vao.AddBinding(shader.VertexAttribute("vert").Slot, VertexUsage.Position);
vao.AddBinding(shader.VertexAttribute("vertTexCoord").Slot, VertexUsage.TextureCoordinate);
vao.Bind();
font.Shader.Bind();
font.Shader.Uniform1("tex", 0);
GL.ActiveTexture(TextureUnit.Texture0);
font.Texture.Bind();
indexVbo.Bind();
GL.DrawElements(BeginMode.Triangles, indexVbo.Length,
DrawElementsType.UnsignedInt, IntPtr.Zero);
}
