static void Main()
{
if (!SharpDevice.IsDirectX11Supported())
{
System.Windows.Forms.MessageBox.Show("DirectX11 Not Supported");
return;
}
//render form
RenderForm form = new RenderForm();
form.Text = "Tutorial 13: Geometry Instancing";
//frame rate counter
SharpFPS fpsCounter = new SharpFPS();
using (SharpDevice device = new SharpDevice(form))
{
//load font
SharpBatch font = new SharpBatch(device, "textfont.dds");
//load model from wavefront obj file
SharpMesh mesh = SharpMesh.CreateNormalMappedFromObj(device, "../../../Models/dog/dog.obj");
//init shader with normal map illumination
SharpShader shader = new SharpShader(device, "../../HLSL_instancing.txt",
new SharpShaderDescription() { VertexShaderFunction = "VS", PixelShaderFunction = "PS" },
new InputElement[] {
new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0),
new InputElement("NORMAL", 0, Format.R32G32B32_Float, 12, 0),
new InputElement("TANGENT", 0, Format.R32G32B32_Float, 24, 0),
new InputElement("BINORMAL", 0, Format.R32G32B32_Float, 36, 0),
new InputElement("TEXCOORD", 0, Format.R32G32_Float, 48, 0),
new InputElement("INSTANCEPOSITION",0,Format.R32G32B32_Float,0,1,InputClassification.PerInstanceData,1)
});
SharpShader shaderStandard = new SharpShader(device, "../../HLSL_standard.txt",
new SharpShaderDescription() { VertexShaderFunction = "VS", PixelShaderFunction = "PS" },
new InputElement[] {
new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0),
new InputElement("NORMAL", 0, Format.R32G32B32_Float, 12, 0),
new InputElement("TANGENT", 0, Format.R32G32B32_Float, 24, 0),
new InputElement("BINORMAL", 0, Format.R32G32B32_Float, 36, 0),
new InputElement("TEXCOORD", 0, Format.R32G32_Float, 48, 0)
});
//create instance buffer data
List<Vector3> positions = new List<Vector3>();
for (int z = 0; z < 100; z++)
{
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
positions.Add(new Vector3(i * 80 - 400, j * 80 - 400, z * 80 - 400));
}
}
}
SharpInstanceBuffer<Vector3> instanceBuffer = new SharpInstanceBuffer<Vector3>(device, positions.ToArray());
//init constant buffer
Buffer11 buffer = shader.CreateBuffer<Data>();
//init frame counter
fpsCounter.Reset();
//to active normal mapping
bool instancing = true;
int instanceCount = 5000;
form.KeyDown += (sender, e) =>
{
switch (e.KeyCode)
{
case Keys.I:
instancing = true;
break;
case Keys.D:
instancing = false;
break;
case Keys.Up:
instanceCount += 100;
if (instanceCount >= 10000)
instanceCount = 10000;
break;
case Keys.Down:
instanceCount -= 100;
if (instanceCount < 0)
instanceCount = 0;
break;
}
};
//main loop
RenderLoop.Run(form, () =>
{
//Resizing
if (device.MustResize)
{
device.Resize();
font.Resize();
}
//apply states
device.UpdateAllStates();
//clear color
device.Clear(Color.CornflowerBlue);
//set transformation matrix
float ratio = (float)form.ClientRectangle.Width / (float)form.ClientRectangle.Height;
Matrix projection = Matrix.PerspectiveFovLH(3.14F / 3.0F, ratio, 1F, 50000.0F);
//set camera position and target
Vector3 from = new Vector3(0, 70, -1000);
Vector3 to = new Vector3(0, 50, 0);
Matrix view = Matrix.LookAtLH(from, to, Vector3.UnitY);
//light direction
Vector3 lightDirection = new Vector3(0.5f, 0, -1);
lightDirection.Normalize();
if (instancing)
{
//Instancing rendering loop
//set world matrix
Matrix world = Matrix.RotationY(Environment.TickCount / 2000.0F);
Data sceneInformation = new Data()
{
world = world,
viewProjection = view * projection,
lightDirection = new Vector4(lightDirection, 1),
viewDirection = new Vector4(Vector3.Normalize(from - to), 1)
};
//apply shader
shader.Apply();
//write data inside constant buffer
device.UpdateData<Data>(buffer, sceneInformation);
//apply constant buffer to shader
device.DeviceContext.VertexShader.SetConstantBuffer(0, buffer);
device.DeviceContext.PixelShader.SetConstantBuffer(0, buffer);
//draw mesh
mesh.Begin();
for (int i = 0; i < mesh.SubSets.Count; i++)
{
device.DeviceContext.PixelShader.SetShaderResource(0, mesh.SubSets[i].DiffuseMap);
device.DeviceContext.PixelShader.SetShaderResource(1, mesh.SubSets[i].NormalMap);
instanceBuffer.DrawInstance(instanceCount, mesh.SubSets[i].IndexCount, mesh.SubSets[i].StartIndex);
}
}
else
{
//non instancing
//apply shader
shaderStandard.Apply();
//apply constant buffer to shader
device.DeviceContext.VertexShader.SetConstantBuffer(0, buffer);
device.DeviceContext.PixelShader.SetConstantBuffer(0, buffer);
//prepare mesh
mesh.Begin();
for (int j = 0; j < instanceCount; j++)
{
//set world matrix
Matrix world = Matrix.RotationY(Environment.TickCount / 2000.0F) * Matrix.Translation(positions[j]);
Data sceneInformation = new Data()
{
world = world,
viewProjection = view * projection,
lightDirection = new Vector4(lightDirection, 1),
viewDirection = new Vector4(Vector3.Normalize(from - to), 1)
};
//write data inside constant buffer
device.UpdateData<Data>(buffer, sceneInformation);
//draw mesh
for (int i = 0; i < mesh.SubSets.Count; i++)
{
device.DeviceContext.PixelShader.SetShaderResource(0, mesh.SubSets[i].DiffuseMap);
device.DeviceContext.PixelShader.SetShaderResource(1, mesh.SubSets[i].NormalMap);
mesh.Draw(i);
}
}
}
//begin drawing text
font.Begin();
//draw string
fpsCounter.Update();
font.DrawString("FPS: " + fpsCounter.FPS, 0, 0, Color.White);
if (instancing)
font.DrawString("Instancing On: Press D to use standard rendering. See FPS", 0, 30, Color.White);
else
font.DrawString("Instancing Off: Press I to use Instancing. See FPS", 0, 30, Color.White);
font.DrawString("Press up and down to change count ", 0, 60, Color.White);
font.DrawString("Count: " + instanceCount, 0, 90, Color.White);
//flush text to view
font.End();
//present
device.Present();
});
//release resource
font.Dispose();
mesh.Dispose();
buffer.Dispose();
shader.Dispose();
shaderStandard.Dispose();
instanceBuffer.Dispose();
}
}
static void Main()
{
if (!SharpDevice.IsDirectX11Supported())
{
System.Windows.Forms.MessageBox.Show("DirectX11 Not Supported");
return;
}
//render form
RenderForm form = new RenderForm();
form.Text = "Tutorial 13: Geometry Instancing";
//frame rate counter
SharpFPS fpsCounter = new SharpFPS();
using (SharpDevice device = new SharpDevice(form))
{
//load font
SharpBatch font = new SharpBatch(device, "textfont.dds");
//load model from wavefront obj file
SharpMesh mesh = SharpMesh.CreateNormalMappedFromObj(device, "../../../Models/dog/dog.obj");
//init shader with normal map illumination
SharpShader shader = new SharpShader(device, "../../HLSL_instancing.txt",
new SharpShaderDescription()
{
VertexShaderFunction = "VS", PixelShaderFunction = "PS"
},
new InputElement[] {
new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0),
new InputElement("NORMAL", 0, Format.R32G32B32_Float, 12, 0),
new InputElement("TANGENT", 0, Format.R32G32B32_Float, 24, 0),
new InputElement("BINORMAL", 0, Format.R32G32B32_Float, 36, 0),
new InputElement("TEXCOORD", 0, Format.R32G32_Float, 48, 0),
new InputElement("INSTANCEPOSITION", 0, Format.R32G32B32_Float, 0, 1, InputClassification.PerInstanceData, 1)
});
SharpShader shaderStandard = new SharpShader(device, "../../HLSL_standard.txt",
new SharpShaderDescription()
{
VertexShaderFunction = "VS", PixelShaderFunction = "PS"
},
new InputElement[] {
new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0),
new InputElement("NORMAL", 0, Format.R32G32B32_Float, 12, 0),
new InputElement("TANGENT", 0, Format.R32G32B32_Float, 24, 0),
new InputElement("BINORMAL", 0, Format.R32G32B32_Float, 36, 0),
new InputElement("TEXCOORD", 0, Format.R32G32_Float, 48, 0)
});
//create instance buffer data
List <Vector3> positions = new List <Vector3>();
for (int z = 0; z < 100; z++)
{
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
positions.Add(new Vector3(i * 80 - 400, j * 80 - 400, z * 80 - 400));
}
}
}
SharpInstanceBuffer <Vector3> instanceBuffer = new SharpInstanceBuffer <Vector3>(device, positions.ToArray());
//init constant buffer
Buffer11 buffer = shader.CreateBuffer <Data>();
//init frame counter
fpsCounter.Reset();
//to active normal mapping
bool instancing = true;
int instanceCount = 5000;
form.KeyDown += (sender, e) =>
{
switch (e.KeyCode)
{
case Keys.I:
instancing = true;
break;
case Keys.D:
instancing = false;
break;
case Keys.Up:
instanceCount += 100;
if (instanceCount >= 10000)
{
instanceCount = 10000;
}
break;
case Keys.Down:
instanceCount -= 100;
if (instanceCount < 0)
{
instanceCount = 0;
}
break;
}
};
//main loop
RenderLoop.Run(form, () =>
{
//Resizing
if (device.MustResize)
{
device.Resize();
font.Resize();
}
//apply states
device.UpdateAllStates();
//clear color
device.Clear(Color.CornflowerBlue);
//set transformation matrix
float ratio = (float)form.ClientRectangle.Width / (float)form.ClientRectangle.Height;
Matrix projection = Matrix.PerspectiveFovLH(3.14F / 3.0F, ratio, 1F, 50000.0F);
//set camera position and target
Vector3 from = new Vector3(0, 70, -1000);
Vector3 to = new Vector3(0, 50, 0);
Matrix view = Matrix.LookAtLH(from, to, Vector3.UnitY);
//light direction
Vector3 lightDirection = new Vector3(0.5f, 0, -1);
lightDirection.Normalize();
if (instancing)
{
//Instancing rendering loop
//set world matrix
Matrix world = Matrix.RotationY(Environment.TickCount / 2000.0F);
Data sceneInformation = new Data()
{
world = world,
viewProjection = view * projection,
lightDirection = new Vector4(lightDirection, 1),
viewDirection = new Vector4(Vector3.Normalize(from - to), 1)
};
//apply shader
shader.Apply();
//write data inside constant buffer
device.UpdateData <Data>(buffer, sceneInformation);
//apply constant buffer to shader
device.DeviceContext.VertexShader.SetConstantBuffer(0, buffer);
device.DeviceContext.PixelShader.SetConstantBuffer(0, buffer);
//draw mesh
mesh.Begin();
for (int i = 0; i < mesh.SubSets.Count; i++)
{
device.DeviceContext.PixelShader.SetShaderResource(0, mesh.SubSets[i].DiffuseMap);
device.DeviceContext.PixelShader.SetShaderResource(1, mesh.SubSets[i].NormalMap);
instanceBuffer.DrawInstance(instanceCount, mesh.SubSets[i].IndexCount, mesh.SubSets[i].StartIndex);
}
}
else
{
//non instancing
//apply shader
shaderStandard.Apply();
//apply constant buffer to shader
device.DeviceContext.VertexShader.SetConstantBuffer(0, buffer);
device.DeviceContext.PixelShader.SetConstantBuffer(0, buffer);
//prepare mesh
mesh.Begin();
for (int j = 0; j < instanceCount; j++)
{
//set world matrix
Matrix world = Matrix.RotationY(Environment.TickCount / 2000.0F) * Matrix.Translation(positions[j]);
Data sceneInformation = new Data()
{
world = world,
viewProjection = view * projection,
lightDirection = new Vector4(lightDirection, 1),
viewDirection = new Vector4(Vector3.Normalize(from - to), 1)
};
//write data inside constant buffer
device.UpdateData <Data>(buffer, sceneInformation);
//draw mesh
for (int i = 0; i < mesh.SubSets.Count; i++)
{
device.DeviceContext.PixelShader.SetShaderResource(0, mesh.SubSets[i].DiffuseMap);
device.DeviceContext.PixelShader.SetShaderResource(1, mesh.SubSets[i].NormalMap);
mesh.Draw(i);
}
}
}
//begin drawing text
font.Begin();
//draw string
fpsCounter.Update();
font.DrawString("FPS: " + fpsCounter.FPS, 0, 0, Color.White);
if (instancing)
{
font.DrawString("Instancing On: Press D to use standard rendering. See FPS", 0, 30, Color.White);
}
else
{
font.DrawString("Instancing Off: Press I to use Instancing. See FPS", 0, 30, Color.White);
}
font.DrawString("Press up and down to change count ", 0, 60, Color.White);
font.DrawString("Count: " + instanceCount, 0, 90, Color.White);
//flush text to view
font.End();
//present
device.Present();
});
//release resource
font.Dispose();
mesh.Dispose();
buffer.Dispose();
shader.Dispose();
shaderStandard.Dispose();
instanceBuffer.Dispose();
}
}
