public void Find()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
{
ShaderCache cache = new ShaderCache();
ShaderProgram sp = cache.FindOrAdd("PassThrough",
ShaderSources.PassThroughVertexShader(),
ShaderSources.PassThroughFragmentShader());
ShaderProgram sp2 = cache.Find("PassThrough");
Assert.AreEqual(sp, sp2);
cache.Release("PassThrough");
cache.Release("PassThrough");
}
}
private void RenderPoint(string vs)
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context))
using (ShaderProgram sp = Device.CreateShaderProgram(vs, ShaderSources.PassThroughFragmentShader()))
using (VertexArray va = TestUtility.CreateVertexArray(window.Context, sp.VertexAttributes["position"].Location))
{
SceneState sceneState = new SceneState();
sceneState.Camera.Eye = 2 * Vector3D.UnitX;
sceneState.Camera.Target = Vector3D.Zero;
sceneState.Camera.Up = Vector3D.UnitZ;
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Points, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), sceneState);
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
}
}
public void PassThrough()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (ShaderProgram sp = Device.CreateShaderProgram(
ShaderSources.PassThroughVertexShader(),
ShaderSources.PassThroughFragmentShader()))
{
Assert.IsFalse(sp.Log.Contains("warning"));
Assert.IsEmpty(sp.Uniforms);
Assert.IsEmpty(sp.UniformBlocks);
Assert.AreEqual(1, sp.VertexAttributes.Count);
Assert.IsTrue(sp.VertexAttributes.Contains("position"));
ShaderVertexAttribute attribute = sp.VertexAttributes["position"];
Assert.AreEqual("position", attribute.Name);
Assert.AreEqual(ShaderVertexAttributeType.FloatVector4, attribute.Datatype);
Assert.AreEqual(1, attribute.Length);
}
}
public void RenderTriangle()
{
Vector4F[] positions = new[]
{
new Vector4F(-0.5f, -0.5f, 0, 1),
new Vector4F(0.5f, -0.5f, 0, 1),
new Vector4F(0.5f, 0.5f, 0, 1)
};
ushort[] indices = new ushort[]
{
0, 1, 2
};
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context))
using (ShaderProgram sp = Device.CreateShaderProgram(ShaderSources.PassThroughVertexShader(), ShaderSources.PassThroughFragmentShader()))
using (VertexBuffer positionsBuffer = Device.CreateVertexBuffer(BufferHint.StaticDraw, ArraySizeInBytes.Size(positions)))
using (IndexBuffer indexBuffer = Device.CreateIndexBuffer(BufferHint.StaticDraw, indices.Length * sizeof(ushort)))
using (VertexArray va = window.Context.CreateVertexArray())
{
positionsBuffer.CopyFromSystemMemory(positions);
indexBuffer.CopyFromSystemMemory(indices);
va.Attributes[sp.VertexAttributes["position"].Location] =
new VertexBufferAttribute(positionsBuffer, ComponentDatatype.Float, 4);
va.IndexBuffer = indexBuffer;
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Triangles, 0, 3, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
//
// Verify detach
//
window.Context.Clear(new ClearState()
{
Buffers = ClearBuffers.ColorBuffer, Color = Color.FromArgb(0, 255, 0)
});
va.Attributes[sp.VertexAttributes["position"].Location] = null;
va.IndexBuffer = null;
window.Context.Draw(PrimitiveType.Triangles, 0, 0, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 0, 255, 0);
//
// Verify rendering without indices
//
va.Attributes[sp.VertexAttributes["position"].Location] =
new VertexBufferAttribute(positionsBuffer, ComponentDatatype.Float, 4);
window.Context.Draw(PrimitiveType.Triangles, 0, 3, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
}
}
public void RenderPoint()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context))
using (ShaderProgram sp = Device.CreateShaderProgram(ShaderSources.PassThroughVertexShader(), ShaderSources.PassThroughFragmentShader()))
using (VertexArray va = TestUtility.CreateVertexArray(window.Context, sp.VertexAttributes["position"].Location))
{
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Points, 0, 1, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
}
}
public void RenderPointWithStencil()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context))
using (Texture2D depthStencilTexture = Device.CreateTexture2D(new Texture2DDescription(1, 1, TextureFormat.Depth24Stencil8, false)))
using (ShaderProgram sp = Device.CreateShaderProgram(ShaderSources.PassThroughVertexShader(), ShaderSources.PassThroughFragmentShader()))
using (VertexArray va = TestUtility.CreateVertexArray(window.Context, sp.VertexAttributes["position"].Location))
{
framebuffer.DepthStencilAttachment = depthStencilTexture;
StencilTest stencilTest = new StencilTest();
stencilTest.Enabled = true;
stencilTest.FrontFace.DepthFailStencilPassOperation = StencilOperation.Replace;
stencilTest.FrontFace.DepthPassStencilPassOperation = StencilOperation.Replace;
stencilTest.FrontFace.StencilFailOperation = StencilOperation.Replace;
stencilTest.FrontFace.ReferenceValue = 2;
RenderState renderState = new RenderState();
renderState.StencilTest = stencilTest;
window.Context.Framebuffer = framebuffer;
window.Context.Clear(new ClearState());
window.Context.Draw(PrimitiveType.Points, 0, 1, new DrawState(renderState, sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
using (ReadPixelBuffer readPixelBuffer = depthStencilTexture.CopyToBuffer(ImageFormat.DepthStencil, ImageDatatype.UnsignedInt248, 1))
{
byte[] depthStencil = readPixelBuffer.CopyToSystemMemory <byte>();
Assert.AreEqual(stencilTest.FrontFace.ReferenceValue, depthStencil[0]);
}
}
}
