private void LoadData(OpenGL GL, GShaderProgram shader, vec3[] vertex, vec4[] color)
{
pVBO[0].Bind(GL);
pVBO[0].SetData(GL, (uint)shader.GetAttributeID(GL, "vPosition"), Pos, false, 3);
// Color
pVBO[1].Bind(GL);
pVBO[1].SetData(GL, (uint)shader.GetAttributeID(GL, "vArgbColor"), Color, false, 4);
}
public void Create(OpenGL GL, string texPath, GShaderProgram shader)
{
vec3[] points = new vec3[] { /*new vec3(-C_END, -C_END, 0), new vec3(-C_END, C_END, 0), new vec3(C_END, C_END, 0), new vec3(C_END, C_END, 0) */
new vec3(C_BOX_END, C_BOX_END, 0), new vec3(C_BOX_END, -C_BOX_END, 0), new vec3(-C_BOX_END, C_BOX_END, 0), new vec3(-C_BOX_END, -C_BOX_END, 0)
};
vec3[] normals = new vec3[points.Length];
for (int i = 0; i < normals.Length; i++)
{
normals[i] = new vec3(0.0f, 0.0f, -1.0f);
}
vec2[] texCord = new vec2[] {
new vec2(0.0f, 1.0f), new vec2(0.0f, 0.0f), new vec2(1.0f, 1.0f), new vec2(1.0f, 0.0f)
};
if (texPath == null)
{
_textureName = C_DUMMY_TEXTURE;
TextureManager.Instance.CreateTexture1x1(C_DUMMY_TEXTURE, GL, false, Color.Blue);
}
else
{
_textureName = texPath;
TextureManager.Instance.CreateTexture(texPath, GL, false);
}
arrowVAO = new VertexBufferArray();
arrowVAO.Create(GL);
arrowVAO.Bind(GL);
VertexBuffer[] cVBO = new VertexBuffer[3];
cVBO[0] = new VertexBuffer();
cVBO[0].Create(GL);
cVBO[0].Bind(GL);
cVBO[0].SetData(GL, (uint)shader.GetAttributeID(GL, "vPosition"), points, false, 3);
// Texture
cVBO[1] = new VertexBuffer();
cVBO[1].Create(GL);
cVBO[1].Bind(GL);
cVBO[1].SetData(GL, (uint)shader.GetAttributeID(GL, "vTextureCoord"), texCord, false, 2);
// Normals
cVBO[2] = new VertexBuffer();
cVBO[2].Create(GL);
cVBO[2].Bind(GL);
cVBO[2].SetData(GL, (uint)shader.GetAttributeID(GL, "vSurfaceNormal"), normals, false, 3);
arrowVAO.Unbind(GL);
}
public void Create(OpenGL GL, string texPath, GShaderProgram shader)
{
CircleData c = DrawCircle(0f, 0f, 1f, _numSegments);
vec3[] points = c.points;
vec3[] normals = new vec3[points.Length];
vec2[] texCord = c.texture;
for (int i = 0; i < normals.Length; i++)
{
normals[i] = new vec3(0.0f, 0.0f, -1.0f);
}
if (texPath == null || texPath == "")
{
_textureName = C_DUMMY_TEXTURE;
TextureManager.Instance.CreateTexture1x1(C_DUMMY_TEXTURE, GL, false, Color.Blue);
}
else
{
_textureName = texPath;
TextureManager.Instance.CreateTexture(texPath, GL, false);
}
compassVAO = new VertexBufferArray();
compassVAO.Create(GL);
compassVAO.Bind(GL);
VertexBuffer[] cVBO = new VertexBuffer[3];
cVBO[0] = new VertexBuffer();
cVBO[0].Create(GL);
cVBO[0].Bind(GL);
cVBO[0].SetData(GL, (uint)shader.GetAttributeID(GL, "vPosition"), points, false, 3);
// Texture
cVBO[1] = new VertexBuffer();
cVBO[1].Create(GL);
cVBO[1].Bind(GL);
cVBO[1].SetData(GL, (uint)shader.GetAttributeID(GL, "vTextureCoord"), texCord, false, 2);
// Normals
cVBO[2] = new VertexBuffer();
cVBO[2].Create(GL);
cVBO[2].Bind(GL);
cVBO[2].SetData(GL, (uint)shader.GetAttributeID(GL, "vSurfaceNormal"), normals, false, 3);
compassVAO.Unbind(GL);
}
public void Render(OpenGL GL, GShaderProgram shader)
{
pointVAO.Bind(GL);
GL.PointSize(Size);
// todo: modify to use gl_PointSize = 10.0; in the vertex shader instead
GL.Enable(OpenGL.GL_POINT_SPRITE_ARB); // MUST be enabled for gl_PointCord to be available in the frag shader
GL.Enable(OpenGL.GL_POINT_SIZE);
GL.Enable(OpenGL.GL_BLEND);
GL.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA);
LoadData(GL, shader, Pos, Color);
GL.DrawArrays(OpenGL.GL_POINTS, 0, Pos.Length);
GL.Disable(OpenGL.GL_POINT_SIZE);
GL.Disable(OpenGL.GL_POINT_SPRITE_ARB);
GL.PointSize(1);
pointVAO.Unbind(GL);
}
public void Render(OpenGL GL, GShaderProgram shader)
{
compassVAO.Bind(GL);
TexContainer tc;
tc = TextureManager.Instance.GetElement(_textureName);
tc.Tex.Bind(GL); // Bind to the current texture on texture unit 0
GL.ActiveTexture(OpenGL.GL_TEXTURE0 + (uint)tc.ID);
shader.SetUniform(GL, "uSampler", tc.ID);
// Turn ON aplha blending for the arrow so the empty background is ignored
GL.Enable(OpenGL.GL_BLEND);
GL.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA);
GL.DrawArrays(OpenGL.GL_TRIANGLE_FAN, 0, _numSegments);
GL.Disable(OpenGL.GL_BLEND);
compassVAO.Unbind(GL);
}
/// <summary>
/// Handles the OpenGLInitialized event of the openGLControl1 control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="SharpGL.SceneGraph.OpenGLEventArgs"/> instance containing the event data.</param>
private void openGLControl_OpenGLInitialized(object sender, OpenGLEventArgs args)
{
// TODO: Initialise OpenGL here.
// Get the OpenGL object.
OpenGL gl = openGLControl.OpenGL;
// Set the clear color.
gl.ClearColor(0, 0, 0, 0);
cWidth = openGLControl.ActualWidth;
cHeight = openGLControl.ActualHeight;
Debug.WriteIf(_debug, "Width = " + cWidth.ToString() + " Height = " + cHeight.ToString());
simpleShader = new GShaderProgram();
vertexShaderSource[0] = ManifestResourceLoader.LoadTextFile("Shaders\\simple.vert");
fragmentShaderSource[0] = ManifestResourceLoader.LoadTextFile("Shaders\\simple.frag");
//vertexShaderSource[0] = ManifestResourceLoader.LoadTextFile("Shaders\\circle.vert");
//fragmentShaderSource[0] = ManifestResourceLoader.LoadTextFile("Shaders\\circle.frag");
simpleShader.Create(gl, vertexShaderSource[0], fragmentShaderSource[0], null);
simpleShader.AssertValid(gl);
textureShader = new GShaderProgram();
vertexShaderSource[1] = ManifestResourceLoader.LoadTextFile("Shaders\\texture.vert");
fragmentShaderSource[1] = ManifestResourceLoader.LoadTextFile("Shaders\\texture.frag");
textureShader.Create(gl, vertexShaderSource[1], fragmentShaderSource[1], null);
textureShader.AssertValid(gl);
_compass = new Compass();
_compass.Create(gl, "", textureShader); // AppDomain.CurrentDomain.BaseDirectory + "textures\\compass-dial.png"
// Allocate memory for all the points
for (int i = 0; i < POINT_TYPES; i++)
{
vec3[] v = new vec3[POINTS];
vec4[] c = new vec4[POINTS];
for (int j = 0; j < POINTS; j++)
{
v[i] = new vec3(0, 0, 0);
c[i] = new vec4(0, 0, 0, 0);
}
_p[i] = new Point();
_p[i].Create(gl, simpleShader, v, c, 0);
}
}
public void Create(OpenGL GL, GShaderProgram shader, vec3[] vertex, vec4[] color, float size)
{
Pos = vertex;
Color = color;
Size = size;
pointVAO = new VertexBufferArray();
pointVAO.Create(GL);
pointVAO.Bind(GL);
pVBO = new VertexBuffer[2];
pVBO[0] = new VertexBuffer();
pVBO[0].Create(GL);
pVBO[1] = new VertexBuffer();
pVBO[1].Create(GL);
LoadData(GL, shader, Pos, Color);
pointVAO.Unbind(GL);
}
