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Textured object is not appearing

7 posts in this topic

I've been trying to work on a method for drawing 2D objects, such as GUI's and what not in DX10 through SlimDX but they just won't appear.

Here's the class

struct Vertex
public Vector4 PositionRhw;
public Vector4 Color;
public Vector2 UV;

public static class TextureDrawer
public static Device TextureDevice;

public class T2D
public Texture2D Texture;

Effect effect;
EffectTechnique technique;
EffectPass pass;
InputLayout layout;
Buffer vertices;
List<Vector4> vertexPositions = new List<Vector4>();
List<Vector2> textureCoords = new List<Vector2>();
List<Vector4> vertexColors = new List<Vector4>();

public T2D(string FileName, SlimDX.DXGI.SwapChain swapChain)
Texture = Texture2D.FromFile(TextureDrawer.TextureDevice, FileName);

// Setup the spriteInstances
spriteInstances = new SpriteInstance[1];
spriteInstances[0] = new SpriteInstance(new ShaderResourceView(TextureDrawer.TextureDevice, Texture), new Vector2(10, 10), new Vector2(10, 10));
effect = Effect.FromFile(TextureDrawer.TextureDevice, "SimpleTexturedQuad.fx", "fx_4_0", SlimDX.D3DCompiler.ShaderFlags.None, SlimDX.D3DCompiler.EffectFlags.None);
technique = effect.GetTechniqueByIndex(0);
pass = technique.GetPassByIndex(0);

EffectResourceVariable shaderTetxure = effect.GetVariableByName("texture2d").AsResource();
ShaderResourceView textureView = new ShaderResourceView(TextureDrawer.TextureDevice, Texture);

InputElement[] inputElements = new InputElement[]
new InputElement("POSITION", 0, SlimDX.DXGI.Format.R32G32B32A32_Float, 0, 0),
new InputElement("COLOR", 0, SlimDX.DXGI.Format.R32G32B32A32_Float, 16, 0),
new InputElement("TEXCOORD", 0, SlimDX.DXGI.Format.R32G32_Float, 32, 0)

layout = new InputLayout(TextureDrawer.TextureDevice, inputElements, pass.Description.Signature);

vertexPositions.Add(new Vector4(-0.5f, -0.5f, 0.5f, 1.0f));
vertexPositions.Add(new Vector4(-0.5f, 0.5f, 0.5f, 1.0f));
vertexPositions.Add(new Vector4(0.5f, -0.5f, 0.5f, 1.0f));
vertexPositions.Add(new Vector4(0.5f, 0.5f, 0.5f, 1.0f));

textureCoords.Add(new Vector2(0.0f, 1.0f));
textureCoords.Add(new Vector2(0.0f, 0.0f));
textureCoords.Add(new Vector2(1.0f, 1.0f));
textureCoords.Add(new Vector2(1.0f, 0.0f));

vertexColors.Add(new Vector4(1.0f, 0.0f, 0.0f, 1.0f));
vertexColors.Add(new Vector4(0.0f, 1.0f, 0.0f, 1.0f));
vertexColors.Add(new Vector4(0.0f, 0.0f, 1.0f, 1.0f));
vertexColors.Add(new Vector4(1.0f, 0.0f, 1.0f, 1.0f));

DataStream stream = new DataStream(vertexPositions.Count * Marshal.SizeOf(typeof(Vertex)), true, true);
for (int i = 0; i < vertexPositions.Count; i++)

// Important: when specifying initial buffer data like this, the buffer will
// read from the current DataStream position; we must rewind the stream to
// the start of the data we just wrote.
stream.Position = 0;

BufferDescription bufferDescription = new BufferDescription();
bufferDescription.BindFlags = BindFlags.VertexBuffer;
bufferDescription.CpuAccessFlags = CpuAccessFlags.None;
bufferDescription.OptionFlags = ResourceOptionFlags.None;
bufferDescription.SizeInBytes = vertexPositions.Count * Marshal.SizeOf(typeof(Vertex));
bufferDescription.Usage = ResourceUsage.Default;

vertices = new Buffer(TextureDrawer.TextureDevice, stream, bufferDescription);


public void Draw()
TextureDrawer.TextureDevice.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertices, Marshal.SizeOf(typeof(Vertex)), 0));

for (int p = 0; p < technique.Description.PassCount; p++)

TextureDrawer.TextureDevice.Draw(vertexPositions.Count, 0);

This is my second day working with SlimDX so I don't know as much as I'd like and it's probably something simple.

Shader code

Texture2D texture2d;

matrix worldMatrix;
matrix viewMatrix;
matrix projectionMatrix;

SamplerState linearSampler
AddressU = Wrap;
AddressV = Wrap;

struct VS_IN
float4 position : POSITION;
float4 color : COLOR;
float2 UV: TEXCOORD0;

struct PS_IN
float4 position : SV_POSITION;
float4 color : COLOR;
float2 UV: TEXCOORD0;

PS_IN VS( VS_IN vertexShaderIn )
PS_IN vertexShaderOut = (PS_IN)0;

vertexShaderOut.position = vertexShaderIn.position;
vertexShaderOut.color = vertexShaderIn.color;
vertexShaderOut.UV = vertexShaderIn.UV;

vertexShaderOut.position = mul(vertexShaderIn.position, worldMatrix);
vertexShaderOut.position = mul(vertexShaderOut.position, viewMatrix);
vertexShaderOut.position = mul(vertexShaderOut.position, projectionMatrix);

return vertexShaderOut;

float4 PS( PS_IN pixelShaderIn ) : SV_Target
float4 finalColor = texture2d.Sample( linearSampler, pixelShaderIn.UV );
finalColor = float4(1,1,1,1);
return finalColor;

technique10 Render
pass P0
SetGeometryShader( 0 );
SetVertexShader( CompileShader( vs_4_0, VS() ) );
SetPixelShader( CompileShader( ps_4_0, PS() ) );

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No I haven't.

Would that be the device's Rasterizer? If so what should I set it to.

I believe I set the state now but no changes to the cull mode made the object appear:

RasterizerStateDescription rsd = new RasterizerStateDescription();
rsd.FillMode = SlimDX.Direct3D10.FillMode.Solid;
rsd.CullMode = CullMode.Front;

TextureDrawer.TextureDevice.Rasterizer.State = RasterizerState.FromDescription(TextureDrawer.TextureDevice, rsd);
[/code] Edited by hawksprite

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I've got a triangle to appear. Being newer to SlimDX my code is just a horrible mess of example snipets and crappy code holding it all together.

But now i've hit another wall. I can make one triangle but im not 100% sure how to turn it into a more rectangular state then send the information needed to the shader to sample it as a texture.

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I have it working now i'll post the code below as a guideline for anybody having issues with this:


static void Main()
var form = new RenderForm("Legends Among Men");
var desc = new SwapChainDescription()
BufferCount = 1,
ModeDescription = new ModeDescription(form.ClientSize.Width, form.ClientSize.Height, new Rational(60, 1), Format.R8G8B8A8_UNorm),
IsWindowed = true,
OutputHandle = form.Handle,
SampleDescription = new SampleDescription(1, 0),
SwapEffect = SwapEffect.Discard,
Usage = Usage.RenderTargetOutput

Device device;
SwapChain swapChain;
Device.CreateWithSwapChain(DriverType.Hardware, DeviceCreationFlags.None, desc, out device, out swapChain);

device.Factory.SetWindowAssociation(form.Handle, WindowAssociationFlags.IgnoreAll);

Texture2D backBuffer = Texture2D.FromSwapChain<Texture2D>(swapChain, 0);
var renderView = new RenderTargetView(device, backBuffer);
var bytecode = ShaderBytecode.CompileFromFile("MiniTri.fx", "fx_5_0", ShaderFlags.None, EffectFlags.None);
var effect = new Effect(device, bytecode);
var technique = effect.GetTechniqueByIndex(0);
var pass = technique.GetPassByIndex(0);
var layout = new InputLayout(device, pass.Description.Signature, new[] {
new InputElement("POSITION", 0, Format.R32G32B32A32_Float, 0, 0),
new InputElement("COLOR", 0, Format.R32G32B32A32_Float, 16, 0)

device.ImmediateContext.Rasterizer.SetViewports(new Viewport(0, 0, form.ClientSize.Width, form.ClientSize.Height, 0.0f, 1.0f));

var textureView = new ShaderResourceView(device, Texture2D.FromFile(device, "picture2.png"));

var stream = new DataStream(4 * 32, true, true);
stream.WriteRange(new[] {
new Vector4(-0.5f, -0.5f, 0.5f, 1.0f), new Vector4(0.0f, 1.0f,0,0),
new Vector4(-0.5f, 0.5f, 0.5f, 1.0f), new Vector4(0.0f, 0.0f,0,0),
new Vector4(0.5f, -0.5f, 0.5f, 1.0f), new Vector4(1.0f, 1.0f,0,0),
new Vector4(0.5f, 0.5f, 0.5f, 1.0f), new Vector4(1.0f, 0.0f,0,0)
stream.Position = 0;

var vertices = new SlimDX.Direct3D11.Buffer(device, stream, new BufferDescription()
BindFlags = BindFlags.VertexBuffer,
CpuAccessFlags = CpuAccessFlags.None,
OptionFlags = ResourceOptionFlags.None,
SizeInBytes = 4 * 32,
Usage = ResourceUsage.Default

var view = Matrix.Translation(Vector3.Zero);
var proj = Matrix.Translation(Vector3.Zero);
var world = Matrix.Translation(Vector3.Zero);

float zz = 0;

device.ImmediateContext.InputAssembler.InputLayout = layout;
device.ImmediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
device.ImmediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertices, 32, 0));


MessagePump.Run(form, () =>
device.ImmediateContext.ClearRenderTargetView(renderView, Color.Black);

zz += 0.001f;
world = Matrix.Translation(new Vector3(zz, 0, 0));


for (int i = 0; i < technique.Description.PassCount; ++i)
device.ImmediateContext.Draw(4, 0);

swapChain.Present(1, PresentFlags.None);


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