private void PrepareState()
{
if (m_Passes != null)
{
return;
}
unsafe
{
AOC_Texture =
new DataTexture<float> {
Name = "AOC_Texture",
InternalFormat = PixelInternalFormat.R8,
Data2D = new float[m_AocTextureSize, m_AocTextureSize],
Params = new TextureBase.Parameters
{
GenerateMipmap = true,
MinFilter = TextureMinFilter.LinearMipmapLinear,
MagFilter = TextureMagFilter.Linear,
}};
NormalDepth_Texture =
new DataTexture<Vector4> {
Name = "NormalDepth_Texture",
InternalFormat = PixelInternalFormat.Rgba32f,
//Format = PixelFormat.DepthComponent,
Data2D = new Vector4[m_SolidModeTextureSize, m_SolidModeTextureSize],
Params = new TextureBase.Parameters
{
GenerateMipmap = false,
MinFilter = TextureMinFilter.Nearest,
MagFilter = TextureMagFilter.Nearest,
}};
Depth_Texture =
new DataTexture<float> {
Name = "Depth_Texture",
InternalFormat = PixelInternalFormat.DepthComponent32f,
Format = PixelFormat.DepthComponent,
Data2D = new float[m_SolidModeTextureSize, m_SolidModeTextureSize],
Params = new TextureBase.Parameters
{
GenerateMipmap = false,
MinFilter = TextureMinFilter.Nearest,
MagFilter = TextureMagFilter.Nearest,
}};
}
var ortho = Matrix4.CreateOrthographic (1, 1, (float)NEAR, (float)FAR);
m_Projection = new MatrixStack ().Push (ortho);
m_TransformationStack = new MatrixStack ().Push (m_Projection);
m_UniformState = new UniformState
{
{"pRayMarchStepFactor", () => this.RayMarchStepFactor},
{"k1", () => this.K1},
{"k2", () => this.K2},
{"k3", () => this.K3},
{"k4", () => this.K4},
{"time", () => this.Time},
};
/*//
var firstPassSolid = RenderPassFactory.CreateFullscreenQuad
(
"raymarch", "System5",
ValueProvider.Create(() => new Vector2(m_SolidModeTextureSize, m_SolidModeTextureSize)),
(window) =>
{
SetCamera (window);
},
(window) =>
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Enable (EnableCap.DepthTest);
GL.DepthMask(true);
GL.DepthFunc (DepthFunction.Less);
GL.Disable (EnableCap.Blend);
},
//pass state
new FramebufferBindingSet
{
{ FramebufferAttachment.DepthAttachment, Depth_Texture },
{ "normal_depth", NormalDepth_Texture }
},
m_UniformState
);*/
var firstPassSolid = new SeparateProgramPass (
"raymarch",
(window) =>
{
SetCamera (window);
},
(window) =>
{
/*GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Enable (EnableCap.DepthTest);
GL.DepthMask(true);
GL.DepthFunc (DepthFunction.Less);
GL.Disable (EnableCap.Blend);*/
},
x =>
{
GLExtensions.DispatchCompute(m_SolidModeTextureSize/(4 * 8), m_SolidModeTextureSize/(4 * 8), 1);
},
RenderPass.GetShaders ("raymarch", "System5"),
//pass state
new ImageBindingSet
{
{ "u_NormalDepth", NormalDepth_Texture }
},
m_UniformState);
AocParameters = new AocParameters
{
TextureSize = 512,
OccConstantArea = false,
OccMaxDist = 40,
OccMinSampleRatio = 0.5f,
OccPixmax = 100,
OccPixmin = 2,
SamplesCount = 32,
Strength = 2.3f,
Bias = 0.4f
};
var aocPassSolid = RenderPassFactory.CreateAoc
(
NormalDepth_Texture,
AOC_Texture,
m_TransformationStack,
new MatrixInversion(m_TransformationStack),
m_Projection,
new MatrixInversion(m_Projection),
AocParameters
);
//
var thirdPassSolid = RenderPassFactory.CreateFullscreenQuad
(
"lighting", "System5",
ValueProvider.Create(() => m_Viewport),
(window) =>
{
SetCamera (window);
},
(window) =>
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Enable (EnableCap.DepthTest);
GL.DepthMask(true);
GL.DepthFunc (DepthFunction.Less);
GL.Disable (EnableCap.Blend);
},
//pass state
FramebufferBindingSet.Default,
m_UniformState,
new TextureBindingSet
{
{"normaldepth_texture", NormalDepth_Texture },
{ "aoc_texture", AOC_Texture },
}
);
m_Passes = new RenderPass[]{ firstPassSolid, aocPassSolid, thirdPassSolid };
m_Manip = new OrbitManipulator (m_Projection);
//m_Grid = new Grid (m_TransformationStack);
m_TransformationStack.Push (m_Manip.RT);
m_UniformState.Set ("modelview_transform", m_Manip.RT);
m_UniformState.Set ("modelviewprojection_transform", m_TransformationStack);
m_UniformState.Set ("projection_transform", m_Projection);
m_UniformState.Set ("projection_inv_transform", new MatrixInversion(m_Projection));
m_UniformState.Set ("modelview_inv_transform", new MatrixInversion(m_Manip.RT));
m_UniformState.Set ("modelviewprojection_inv_transform", new MatrixInversion(m_TransformationStack));
PrepareState ();
}
protected virtual void ParameterSetup()
{
//
AocParameters = new AocParameters
{
TextureSize = 1024,
OccConstantArea = false,
OccMaxDist = 40,
OccMinSampleRatio = 0.5f,
OccPixmax = 44,
OccPixmin = 2,
SamplesCount = 32,
Strength = 1,
Bias = 0.2f,
BlurEdgeAvoidance = 0.2f
};
//
m_SunLight = new Light
{
Direction = new Vector3(1, 1, 1),
Type = LightType.Directional
};
SunLightImpl = new ShadowImplementationParameters(m_SunLight);
SunLightImpl.ImplementationType = ShadowImplementationType.Soft2;
//
ShadowTextureSize = 2048;
SolidModeTextureSize = 2048;
LightSize = 0.1f;
ExpMapLevel = 1;
ExpMapNsamples = 15;
ExpMapRange = 0.0055f;
ExpMapRangeK = 0.85f;
}