public GPURelativeToEye(Context context, Vector3D[] positions, byte[] colors)
{
_sp = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Examples.GPURelativeToEye.Shaders.VS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Examples.Shaders.FS.glsl"));
_cameraEyeHigh = (Uniform <Vector3F>)_sp.Uniforms["u_cameraEyeHigh"];
_cameraEyeLow = (Uniform <Vector3F>)_sp.Uniforms["u_cameraEyeLow"];
_modelViewPerspectiveMatrixRelativeToEye = (Uniform <Matrix4F>)(_sp.Uniforms["u_modelViewPerspectiveMatrixRelativeToEye"]);
_pointSize = (Uniform <float>)_sp.Uniforms["u_pointSize"];
///////////////////////////////////////////////////////////////////
Mesh mesh = new Mesh();
VertexAttributeFloatVector3 positionsHighAttribute = new VertexAttributeFloatVector3("positionHigh", positions.Length);
VertexAttributeFloatVector3 positionsLowAttribute = new VertexAttributeFloatVector3("positionLow", positions.Length);
VertexAttributeRGB colorAttribute = new VertexAttributeRGB("color", positions.Length);
mesh.Attributes.Add(positionsHighAttribute);
mesh.Attributes.Add(positionsLowAttribute);
mesh.Attributes.Add(colorAttribute);
for (int i = 0; i < positions.Length; ++i)
{
Vector3F positionHigh;
Vector3F positionLow;
Vector3DToTwoVector3F(positions[i], out positionHigh, out positionLow);
positionsHighAttribute.Values.Add(positionHigh);
positionsLowAttribute.Values.Add(positionLow);
}
for (int i = 0; i < colors.Length; ++i)
{
colorAttribute.Values.Add(colors[i]);
}
_va = context.CreateVertexArray(mesh, _sp.VertexAttributes, BufferHint.StaticDraw);
///////////////////////////////////////////////////////////////////
RenderState renderState = new RenderState();
renderState.FacetCulling.Enabled = false;
renderState.DepthTest.Enabled = false;
renderState.ProgramPointSize = ProgramPointSize.Enabled;
_drawState = new DrawState(renderState, _sp, _va);
}
public RelativeToCenter(Context context, Vector3D[] positions, byte[] colors)
{
_sp = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Examples.RelativeToCenter.Shaders.VS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Examples.Shaders.FS.glsl"));
_modelViewPerspectiveMatrixRelativeToCenter = (Uniform <Matrix4F>)(_sp.Uniforms["u_modelViewPerspectiveMatrixRelativeToCenter"]);
_pointSize = (Uniform <float>)_sp.Uniforms["u_pointSize"];
///////////////////////////////////////////////////////////////////
Mesh mesh = new Mesh();
VertexAttributeFloatVector3 positionsAttribute = new VertexAttributeFloatVector3("position", positions.Length);
VertexAttributeRGB colorAttribute = new VertexAttributeRGB("color", positions.Length);
mesh.Attributes.Add(positionsAttribute);
mesh.Attributes.Add(colorAttribute);
_center = new AxisAlignedBoundingBox(positions).Center;
for (int i = 0; i < positions.Length; ++i)
{
positionsAttribute.Values.Add((positions[i] - _center).ToVector3F());
}
for (int i = 0; i < colors.Length; ++i)
{
colorAttribute.Values.Add(colors[i]);
}
_va = context.CreateVertexArray(mesh, _sp.VertexAttributes, BufferHint.StaticDraw);
///////////////////////////////////////////////////////////////////
RenderState renderState = new RenderState();
renderState.FacetCulling.Enabled = false;
renderState.DepthTest.Enabled = false;
renderState.ProgramPointSize = ProgramPointSize.Enabled;
_drawState = new DrawState(renderState, _sp, _va);
}
public CPURelativeToEye(Context context, Vector3D[] positions, byte[] colors)
{
_sp = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Examples.CPURelativeToEye.Shaders.VS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Examples.Shaders.FS.glsl"));
_modelViewPerspectiveMatrixRelativeToEye = (Uniform <Matrix4F>)(_sp.Uniforms["u_modelViewPerspectiveMatrixRelativeToEye"]);
_pointSize = (Uniform <float>)_sp.Uniforms["u_pointSize"];
///////////////////////////////////////////////////////////////////
_positions = new Vector3D[positions.Length];
positions.CopyTo(_positions, 0);
_positionsRelativeToEye = new Vector3F[_positions.Length];
_eye = Vector3D.Zero;
//
// _positionBuffer is dynamic, and is written to when the camera moves.
//
_positionBuffer = Device.CreateVertexBuffer(BufferHint.DynamicDraw, ArraySizeInBytes.Size(_positionsRelativeToEye));
_colorBuffer = Device.CreateVertexBuffer(BufferHint.StaticDraw, colors.Length);
_colorBuffer.CopyFromSystemMemory(colors);
_va = context.CreateVertexArray();
_va.Attributes[_sp.VertexAttributes["position"].Location] =
new VertexBufferAttribute(_positionBuffer, ComponentDatatype.Float, 3);
_va.Attributes[_sp.VertexAttributes["color"].Location] =
new VertexBufferAttribute(_colorBuffer, ComponentDatatype.UnsignedByte, 3, true, 0, 0);
///////////////////////////////////////////////////////////////////
RenderState renderState = new RenderState();
renderState.FacetCulling.Enabled = false;
renderState.DepthTest.Enabled = false;
renderState.ProgramPointSize = ProgramPointSize.Enabled;
_drawState = new DrawState(renderState, _sp, _va);
}
public SceneGPURelativeToEyeLOD(Context context, Vector3D[] positions, byte[] colors)
{
_spHigh = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Examples.GPURelativeToEyeLOD.Shaders.HighPrecisionVS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Examples.Shaders.FS.glsl"));
_cameraEyeHigh = (Uniform <Vector3F>)_spHigh.Uniforms["u_cameraEyeHigh"];
_cameraEyeLow = (Uniform <Vector3F>)_spHigh.Uniforms["u_cameraEyeLow"];
_modelViewPerspectiveMatrixRelativeToEye = (Uniform <Matrix4F>)(_spHigh.Uniforms["u_modelViewPerspectiveMatrixRelativeToEye"]);
_pointSizeHigh = (Uniform <float>)_spHigh.Uniforms["u_pointSize"];
///////////////////////////////////////////////////////////////////
Vector3F[] positionsHigh = new Vector3F[positions.Length];
Vector3F[] positionsLow = new Vector3F[positions.Length];
for (int i = 0; i < positions.Length; ++i)
{
Vector3DToTwoVector3F(positions[i], out positionsHigh[i], out positionsLow[i]);
}
_center = positions[6];
_positionBufferHigh = Device.CreateVertexBuffer(BufferHint.StaticDraw, ArraySizeInBytes.Size(positions));
_positionBufferLow = Device.CreateVertexBuffer(BufferHint.StaticDraw, ArraySizeInBytes.Size(positions));
_colorBuffer = Device.CreateVertexBuffer(BufferHint.StaticDraw, colors.Length);
_positionBufferHigh.CopyFromSystemMemory(positionsHigh);
_positionBufferLow.CopyFromSystemMemory(positionsLow);
_colorBuffer.CopyFromSystemMemory(colors);
_vaHigh = context.CreateVertexArray();
_vaHigh.Attributes[_spHigh.VertexAttributes["positionHigh"].Location] =
new VertexBufferAttribute(_positionBufferHigh, ComponentDatatype.Float, 3);
_vaHigh.Attributes[_spHigh.VertexAttributes["positionLow"].Location] =
new VertexBufferAttribute(_positionBufferLow, ComponentDatatype.Float, 3);
_vaHigh.Attributes[_spHigh.VertexAttributes["color"].Location] =
new VertexBufferAttribute(_colorBuffer, ComponentDatatype.UnsignedByte, 3, true, 0, 0);
///////////////////////////////////////////////////////////////////
RenderState renderState = new RenderState();
renderState.FacetCulling.Enabled = false;
renderState.DepthTest.Enabled = false;
renderState.ProgramPointSize = ProgramPointSize.Enabled;
_drawStateHigh = new DrawState(renderState, _spHigh, _vaHigh);
///////////////////////////////////////////////////////////////////
// Low Precision
_spLow = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Examples.GPURelativeToEyeLOD.Shaders.LowPrecisionVS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Examples.Shaders.FS.glsl"));
_pointSizeLow = (Uniform <float>)_spLow.Uniforms["u_pointSize"];
_vaLow = context.CreateVertexArray();
_vaLow.Attributes[_spLow.VertexAttributes["position"].Location] =
new VertexBufferAttribute(_positionBufferHigh, ComponentDatatype.Float, 3);
_vaLow.Attributes[_spLow.VertexAttributes["color"].Location] =
new VertexBufferAttribute(_colorBuffer, ComponentDatatype.UnsignedByte, 3, true, 0, 0);
_drawStateLow = new DrawState(renderState, _spLow, _vaLow);
}