private bool RenderSceneToTexture()
{
// Set the render target to be the render to texture.
RenderTexture.SetRenderTarget(D3D.DeviceContext);
// Clear the render to texture.
RenderTexture.ClearRenderTarget(D3D.DeviceContext, 0.0f, 0.0f, 0.0f, 1.0f);
// Get the world matrix from the d3d object.
Matrix worldMatrix = D3D.WorldMatrix;
// Generate the light view matrix based on the light's position.
Light.GenerateViewMatrix();
// Get the view and orthographic matrices from the light object.
Matrix lightViewMatrix = Light.ViewMatrix;
Matrix lightOrthoMatrix = Light.OrthoMatrix;
// Translate to the position of the tree.
Vector3 treePosition = TreeModel.GetPosition();
Matrix.Translation(treePosition.X, treePosition.Y, treePosition.Z, out worldMatrix);
// Render the tree trunk with the depth shader.
TreeModel.RenderTrunk(D3D.DeviceContext);
if (!DepthShader.Render(D3D.DeviceContext, TreeModel.TrunkIndexCount, worldMatrix, lightViewMatrix, lightOrthoMatrix))
{
return(false);
}
// Render the tree leaves using the depth transparency shader.
TreeModel.RenderLeaves(D3D.DeviceContext);
if (!TransparentDepthShader.Render(D3D.DeviceContext, TreeModel.LeafIndexCount, worldMatrix, lightViewMatrix, lightOrthoMatrix, TreeModel.LeafTexture.TextureResource))
{
return(false);
}
// Reset the world matrix.
worldMatrix = D3D.WorldMatrix;
// Translate to the position of the ground model.
Vector3 groundPosition = GroundModel.GetPosition();
Matrix.Translation(groundPosition.X, groundPosition.Y, groundPosition.Z, out worldMatrix);
// Render the ground model with the depth shader.
GroundModel.Render(D3D.DeviceContext);
if (!DepthShader.Render(D3D.DeviceContext, GroundModel.IndexCount, worldMatrix, lightViewMatrix, lightOrthoMatrix))
{
return(false);
}
// Reset the render target back to the original back buffer and not the render to texture anymore.
D3D.SetBackBufferRenderTarget();
// Reset the viewport back to the original.
D3D.ResetViewPort();
return(true);
}
private bool Render()
{
// Render the depth of the scene to a texture.
if (!RenderSceneToTexture())
{
return(false);
}
// Clear the scene to Grey
D3D.BeginScene(0.0f, 0.5f, 0.8f, 1.0f);
// Generate the view matrix based on the camera's position.
Camera.Render();
// Generate the light view matrix based on the light's position.
Light.GenerateViewMatrix();
// Get the matrices from the camera and d3d objects.
Matrix viewCameraMatrix = Camera.ViewMatrix;
Matrix worldMatrix = D3D.WorldMatrix;
Matrix projectionMatrix = D3D.ProjectionMatrix;
// Get the light's view and projection matrices from the light object.
Matrix lightViewMatrix = Light.ViewMatrix;
Matrix lightOrthoMatrix = Light.OrthoMatrix;
// Set the light color attributes.
Light.SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);
Light.SetAmbientColor(0.15f, 0.15f, 0.15f, 1.0f);
// Translate to the position of the ground model.
Vector3 groundPosition = GroundModel.GetPosition();
Matrix.Translation(groundPosition.X, groundPosition.Y, groundPosition.Z, out worldMatrix);
// Render the ground model using the shadow shader.
GroundModel.Render(D3D.DeviceContext);
if (!ShadowShader.Render(D3D.DeviceContext, GroundModel.IndexCount, worldMatrix, viewCameraMatrix, projectionMatrix, lightViewMatrix, lightOrthoMatrix, GroundModel.Texture.TextureResource, RenderTexture.ShaderResourceView, Light.Direction, Light.AmbientColor, Light.DiffuseColour))
{
return(false);
}
// Reset the world matrix.
worldMatrix = D3D.WorldMatrix;
// Translate to the position of the tree model.
Vector3 treePosition = TreeModel.GetPosition();
Matrix.Translation(treePosition.X, treePosition.Y, treePosition.Z, out worldMatrix);
// Render the tree trunk.
TreeModel.RenderTrunk(D3D.DeviceContext);
if (!ShadowShader.Render(D3D.DeviceContext, TreeModel.TrunkIndexCount, worldMatrix, viewCameraMatrix, projectionMatrix, lightViewMatrix, lightOrthoMatrix, TreeModel.TrunkTexture.TextureResource, RenderTexture.ShaderResourceView, Light.Direction, Light.AmbientColor, Light.DiffuseColour))
{
return(false);
}
// Enable blending and
D3D.TurnOnAlphaBlending();
// Render the tree leaves.
TreeModel.RenderLeaves(D3D.DeviceContext);
if (!ShadowShader.Render(D3D.DeviceContext, TreeModel.LeafIndexCount, worldMatrix, viewCameraMatrix, projectionMatrix, lightViewMatrix, lightOrthoMatrix, TreeModel.LeafTexture.TextureResource, RenderTexture.ShaderResourceView, Light.Direction, Light.AmbientColor, Light.DiffuseColour))
{
return(false);
}
// Turn off Alpha Blending.
D3D.TurnOffAlphaBlending();
// Reset the world matrix.
worldMatrix = D3D.WorldMatrix;
// Present the rendered scene to the screen.
D3D.EndScene();
return(true);
}
