private static void DrawPolygonUv(NUD.Polygon p, int windowWidth, int windowHeight)
{
Shader shader = OpenTKSharedResources.shaders["UV"];
shader.UseProgram();
shader.EnableVertexAttributes();
uvPositionVbo.Bind();
// Draw over everything
GL.Disable(EnableCap.DepthTest);
GL.Disable(EnableCap.CullFace);
GL.Clear(ClearBufferMask.DepthBufferBit);
// Scale to 0 to 1 UV space and flip vertically.
Matrix4 matrix = Matrix4.CreateOrthographicOffCenter(0, 1, 1, 0, -1, 1);
shader.SetMatrix4x4("mvpMatrix", ref matrix);
SetVertexAttributes(shader);
// Draw the uvs.
GL.LineWidth(1.5f);
GL.Enable(EnableCap.LineSmooth);
uvElementsIbo.Bind();
GL.DrawElements(PrimitiveType.Triangles, p.displayFaceSize, DrawElementsType.UnsignedInt, p.Offset);
shader.DisableVertexAttributes();
}
public void Draw(Matrix4 mvpMatrix)
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
if (!shader.ProgramCreatedSuccessfully)
{
return;
}
// Set up.
shader.UseProgram();
shader.EnableVertexAttributes();
positionBuffer.Bind();
// Set shader values.
Matrix4 matrix = mvpMatrix;
shader.SetMatrix4x4("mvpMatrix", ref matrix);
// Draw.
int rectangularPrismVertCount = 24;
GL.DrawArrays(PrimitiveType.TriangleFan, 0, rectangularPrismVertCount);
shader.DisableVertexAttributes();
}
public static void DrawRectangularPrism(Matrix4 mvpMatrix, float scaleX = 1, float scaleY = 1, float scaleZ = 1,
float centerX = 0, float centerY = 0, float centerZ = 0)
{
Shader shader = OpenTKSharedResources.shaders["SolidColor3D"];
if (!shader.ProgramCreatedSuccessfully)
{
return;
}
// Set up.
shader.UseProgram();
shader.EnableVertexAttributes();
rectangularPrismPositionBuffer.Bind();
// Set shader values.
SetVertexAttributes(shader);
SetShaderUniforms(mvpMatrix, scaleX, scaleY, scaleZ, centerX, centerY, centerZ, shader);
// Draw.
int rectangularPrismVertCount = 24;
GL.DrawArrays(PrimitiveType.TriangleFan, 0, rectangularPrismVertCount);
shader.DisableVertexAttributes();
}
public static void DrawScreenTriangle(Shader shader, BufferObject vbo)
{
shader.EnableVertexAttributes();
vbo.Bind();
// Set everytime because multiple shaders use this for drawing.
GL.VertexAttribPointer(shader.GetVertexAttributeUniformLocation("position"), 3, VertexAttribPointerType.Float, false, sizeof(float) * 3, 0);
GL.DrawArrays(PrimitiveType.Triangles, 0, 3);
shader.DisableVertexAttributes();
}