protected override void Awake()
{
base.Awake();
int tileSize = TileSize;
int capacity = Capacity;
for (int i = 0; i < capacity; i++)
{
RenderTexture texture = new RenderTexture(tileSize, tileSize, 0, m_internalFormat, m_readWrite);
texture.filterMode = m_filterMode;
texture.wrapMode = m_wrapMode;
texture.useMipMap = m_mipmaps;
texture.enableRandomWrite = m_enableRandomWrite;
GPUSlot slot = new GPUSlot(this, texture);
AddSlot(i, slot);
}
}
/// <summary>
/// Sets the uniforms necessary to access the texture tile for the given quad.
/// The samplers producer must be using a GPUTileStorage at the first slot
/// for this function to work
/// </summary>
private void SetTile(ref RenderTexture tex, ref Vector3 coord, ref Vector3 size, int level, int tx, int ty)
{
if (!Producer.IsGPUProducer)
{
return;
}
Tile t = null;
int b = Producer.Border;
int s = Producer.Cache.GetStorage(0).TileSize;
float dx = 0;
float dy = 0;
float dd = 1;
float ds0 = (s / 2) * 2.0f - 2.0f * b;
float ds = ds0;
if (!Producer.HasTile(level, tx, ty))
{
throw new MissingTileException("Producer should have tile.");
}
QuadTree tt = m_root;
QuadTree tc;
int tl = 0;
while (tl != level && (tc = tt.Children[((tx >> (level - tl - 1)) & 1) | ((ty >> (level - tl - 1)) & 1) << 1]) != null)
{
tl += 1;
tt = tc;
}
t = tt.Tile;
dx = dx * ((s / 2) * 2 - 2 * b) / dd;
dy = dy * ((s / 2) * 2 - 2 * b) / dd;
if (t == null)
{
throw new NullReferenceException("tile is null");
}
GPUSlot gpuSlot = t.GetSlot(0) as GPUSlot;
if (gpuSlot == null)
{
throw new NullReferenceException("gpuSlot is null");
}
float w = gpuSlot.Texture.width;
float h = gpuSlot.Texture.height;
Vector4 coords;
if (s % 2 == 0)
{
coords = new Vector4((dx + b) / w, (dy + b) / h, 0.0f, ds / w);
}
else
{
coords = new Vector4((dx + b + 0.5f) / w, (dy + b + 0.5f) / h, 0.0f, ds / w);
}
tex = gpuSlot.Texture;
coord = new Vector3(coords.x, coords.y, coords.z);
size = new Vector3(coords.w, coords.w, (s / 2) * 2.0f - 2.0f * b);
}
public override void DoCreateTile(int level, int tx, int ty, List <Slot> slot)
{
GPUSlot gpuSlot = slot[0] as GPUSlot;
Tile elevationTile = m_elevationProducer.FindTile(level, tx, ty, false, true);
GPUSlot elevationGpuSlot = null;
if (elevationTile != null)
{
elevationGpuSlot = elevationTile.GetSlot(0) as GPUSlot;
}
else
{
throw new MissingTileException("Find elevation tile failed");
}
int tileWidth = gpuSlot.Owner.TileSize;
m_normalsMat.SetVector(m_uniforms.tileSD, new Vector2(tileWidth, (tileWidth - 1.0f) / (World.GridResolution - 1.0f)));
RenderTexture elevationTex = elevationGpuSlot.Texture;
m_normalsMat.SetTexture(m_uniforms.elevationSampler, elevationTex);
Vector4 elevationOSL = new Vector4(0.25f / elevationTex.width, 0.25f / elevationTex.height, 1.0f / elevationTex.width, 0.0f);
m_normalsMat.SetVector(m_uniforms.elevationOSL, elevationOSL);
if (World.IsDeformed)
{
double D = TerrainNode.Root.Length;
double R = D / 2.0;
double len = 1 << level;
double x0 = tx / len * D - R;
double x1 = (tx + 1) / len * D - R;
double y0 = ty / len * D - R;
double y1 = (ty + 1) / len * D - R;
Vector3d p0 = new Vector3d(x0, y0, R);
Vector3d p1 = new Vector3d(x1, y0, R);
Vector3d p2 = new Vector3d(x0, y1, R);
Vector3d p3 = new Vector3d(x1, y1, R);
Vector3d pc = new Vector3d((x0 + x1) * 0.5, (y0 + y1) * 0.5, R);
double l0 = p0.Magnitude;
double l1 = p1.Magnitude;
double l2 = p2.Magnitude;
double l3 = p3.Magnitude;
Vector3d v0 = p0.Normalized;
Vector3d v1 = p1.Normalized;
Vector3d v2 = p2.Normalized;
Vector3d v3 = p3.Normalized;
Vector3d vc = (v0 + v1 + v2 + v3) * 0.25;
Matrix4x4d deformedCorners = new Matrix4x4d(
v0.x * R - vc.x * R, v1.x * R - vc.x * R, v2.x * R - vc.x * R, v3.x * R - vc.x * R,
v0.y * R - vc.y * R, v1.y * R - vc.y * R, v2.y * R - vc.y * R, v3.y * R - vc.y * R,
v0.z * R - vc.z * R, v1.z * R - vc.z * R, v2.z * R - vc.z * R, v3.z * R - vc.z * R,
1.0, 1.0, 1.0, 1.0);
Matrix4x4d deformedVerticals = new Matrix4x4d(
v0.x, v1.x, v2.x, v3.x,
v0.y, v1.y, v2.y, v3.y,
v0.z, v1.z, v2.z, v3.z,
0.0, 0.0, 0.0, 0.0);
Vector3d uz = pc.Normalized;
Vector3d ux = (new Vector3d(0, 1, 0)).Cross(uz).Normalized;
Vector3d uy = uz.Cross(ux);
Matrix4x4d worldToTangentFrame = new Matrix4x4d(
ux.x, ux.y, ux.z, 0.0,
uy.x, uy.y, uy.z, 0.0,
uz.x, uz.y, uz.z, 0.0,
0.0, 0.0, 0.0, 0.0);
m_normalsMat.SetMatrix(m_uniforms.patchCorners, MathConverter.ToMatrix4x4(deformedCorners));
m_normalsMat.SetMatrix(m_uniforms.patchVerticals, MathConverter.ToMatrix4x4(deformedVerticals));
m_normalsMat.SetVector(m_uniforms.patchCornerNorms, new Vector4((float)l0, (float)l1, (float)l2, (float)l3));
m_normalsMat.SetVector(m_uniforms.deform, new Vector4((float)x0, (float)y0, (float)(D / len), (float)R));
m_normalsMat.SetMatrix(m_uniforms.worldToTangentFrame, MathConverter.ToMatrix4x4(worldToTangentFrame));
}
else
{
double D = TerrainNode.Root.Length;
double R = D / 2.0;
double len = 1 << level;
double x0 = tx / len * D - R;
double y0 = ty / len * D - R;
m_normalsMat.SetMatrix(m_uniforms.worldToTangentFrame, Matrix4x4.identity);
m_normalsMat.SetVector(m_uniforms.deform, new Vector4((float)x0, (float)y0, (float)(D / len), 0.0f));
}
Graphics.Blit(null, gpuSlot.Texture, m_normalsMat);
base.DoCreateTile(level, tx, ty, slot);
}
public override void DoCreateTile(int level, int tx, int ty, List <Slot> slot)
{
GPUSlot gpuSlot = slot[0] as GPUSlot;
int tileWidth = gpuSlot.Owner.TileSize;
int tileSize = tileWidth - 4;
GPUSlot parentGpuSlot = null;
Tile parentTile = null;
if (level > 0)
{
parentTile = FindTile(level - 1, tx / 2, ty / 2, false, true);
if (parentTile != null)
{
parentGpuSlot = parentTile.GetSlot(0) as GPUSlot;
}
else
{
throw new MissingTileException("Find parent tile failed");
}
}
m_upsampleMat.SetFloat(m_uniforms.tileWidth, tileWidth);
if (level > 0)
{
RenderTexture tex = parentGpuSlot.Texture;
m_upsampleMat.SetTexture(m_uniforms.coarseLevelSampler, tex);
float dx = (tx % 2) * (tileSize / 2);
float dy = (ty % 2) * (tileSize / 2);
Vector4 coarseLevelOSL = new Vector4((dx + 0.5f) / tex.width, (dy + 0.5f) / tex.height, 1.0f / tex.width, 0.0f);
m_upsampleMat.SetVector(m_uniforms.coarseLevelOSL, coarseLevelOSL);
}
else
{
m_upsampleMat.SetVector(m_uniforms.coarseLevelOSL, new Vector4(-1.0f, -1.0f, -1.0f, -1.0f));
}
if (m_orthoCPUProducer != null && m_orthoCPUProducer.HasTile(level, tx, ty))
{
Tile orthoCPUTile = m_orthoCPUProducer.FindTile(level, tx, ty, false, true);
CPUSlot <byte> orthoCPUSlot = null;
if (orthoCPUTile != null)
{
orthoCPUSlot = orthoCPUTile.GetSlot(0) as CPUSlot <byte>;
}
else
{
throw new MissingTileException("Find orthoCPU tile failed");
}
int c = m_orthoCPUProducer.Channels;
Color32 col = new Color32();
byte[] data = orthoCPUSlot.Data;
for (int x = 0; x < tileWidth; x++)
{
for (int y = 0; y < tileWidth; y++)
{
col.r = data[(x + y * tileWidth) * c];
if (c > 1)
{
col.g = data[(x + y * tileWidth) * c + 1];
}
if (c > 2)
{
col.b = data[(x + y * tileWidth) * c + 2];
}
if (c > 3)
{
col.a = data[(x + y * tileWidth) * c + 3];
}
m_residueTex.SetPixel(x, y, col);
}
}
m_residueTex.Apply();
m_upsampleMat.SetTexture(m_uniforms.residualSampler, m_residueTex);
m_upsampleMat.SetVector(m_uniforms.residualOSH, new Vector4(0.5f / tileWidth, 0.5f / tileWidth, 1.0f / tileWidth, 0.0f));
}
else
{
m_upsampleMat.SetTexture(m_uniforms.residualSampler, null);
m_upsampleMat.SetVector(m_uniforms.residualOSH, new Vector4(-1, -1, -1, -1));
}
float rs = level < m_noiseAmp.Length ? m_noiseAmp[level] : 0.0f;
int noiseL = 0;
int face = TerrainNode.Face;
if (rs != 0.0f)
{
if (face == 1)
{
int offset = 1 << level;
int bottomB = m_noise.Noise2D(tx + 0.5f, ty + offset) > 0.0f ? 1 : 0;
int rightB = (tx == offset - 1 ? m_noise.Noise2D(ty + offset + 0.5f, offset) : m_noise.Noise2D(tx + 1.0f, ty + offset + 0.5f)) > 0.0f ? 2 : 0;
int topB = (ty == offset - 1 ? m_noise.Noise2D((3.0f * offset - 1.0f - tx) + 0.5f, offset) : m_noise.Noise2D(tx + 0.5f, ty + offset + 1.0f)) > 0.0f ? 4 : 0;
int leftB = (tx == 0 ? m_noise.Noise2D((4.0f * offset - 1.0f - ty) + 0.5f, offset) : m_noise.Noise2D(tx, ty + offset + 0.5f)) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
else if (face == 6)
{
int offset = 1 << level;
int bottomB = (ty == 0 ? m_noise.Noise2D((3.0f * offset - 1.0f - tx) + 0.5f, 0) : m_noise.Noise2D(tx + 0.5f, ty - offset)) > 0.0f ? 1 : 0;
int rightB = (tx == offset - 1.0f ? m_noise.Noise2D((2.0f * offset - 1.0f - ty) + 0.5f, 0) : m_noise.Noise2D(tx + 1.0f, ty - offset + 0.5f)) > 0.0f ? 2 : 0;
int topB = m_noise.Noise2D(tx + 0.5f, ty - offset + 1.0f) > 0.0f ? 4 : 0;
int leftB = (tx == 0 ? m_noise.Noise2D(3.0f * offset + ty + 0.5f, 0) : m_noise.Noise2D(tx, ty - offset + 0.5f)) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
else
{
int offset = (1 << level) * (face - 2);
int bottomB = m_noise.Noise2D(tx + offset + 0.5f, ty) > 0.0f ? 1 : 0;
int rightB = m_noise.Noise2D((tx + offset + 1) % (4 << level), ty + 0.5f) > 0.0f ? 2 : 0;
int topB = m_noise.Noise2D(tx + offset + 0.5f, ty + 1.0f) > 0.0f ? 4 : 0;
int leftB = m_noise.Noise2D(tx + offset, ty + 0.5f) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
}
int[] noiseRs = new int[] { 0, 0, 1, 0, 2, 0, 1, 0, 3, 3, 1, 3, 2, 2, 1, 0 };
int noiseR = noiseRs[noiseL];
int[] noiseLs = new int[] { 0, 1, 1, 2, 1, 3, 2, 4, 1, 2, 3, 4, 2, 4, 4, 5 };
noiseL = noiseLs[noiseL];
m_upsampleMat.SetTexture(m_uniforms.noiseSampler, m_noiseTextures[noiseL]);
m_upsampleMat.SetVector(m_uniforms.noiseUVLH, new Vector4(noiseR, (noiseR + 1) % 4, 0.0f, m_hsv ? 1.0f : 0.0f));
if (m_hsv)
{
Vector4 col = m_noiseColor * rs / 255.0f;
col.w *= 2.0f;
m_upsampleMat.SetVector(m_uniforms.noiseColor, col);
}
else
{
Vector4 col = m_noiseColor * rs * 2.0f / 255.0f;
col.w *= 2.0f;
m_upsampleMat.SetVector(m_uniforms.noiseColor, col);
}
m_upsampleMat.SetVector(m_uniforms.noiseRootColor, m_rootNoiseColor);
Graphics.Blit(null, gpuSlot.Texture, m_upsampleMat);
base.DoCreateTile(level, tx, ty, slot);
}
/// <summary>
/// This function creates the elevations data and is called by the CreateTileTask when the task is run by the schedular
/// The functions needs the tiles parent data to have already been created. If it has not the program will abort.
/// </summary>
public override void DoCreateTile(int level, int tx, int ty, List <Slot> slot)
{
GPUSlot gpuSlot = slot[0] as GPUSlot;
int tileWidth = gpuSlot.Owner.TileSize;
int b = Border * 2 + 1;
int tileSize = tileWidth - b;
GPUSlot parentGpuSlot = null;
Tile parentTile = null;
if (level > 0)
{
parentTile = FindTile(level - 1, tx / 2, ty / 2, false, true);
if (parentTile != null)
{
parentGpuSlot = parentTile.GetSlot(0) as GPUSlot;
}
else
{
throw new MissingTileException("Find parent tile failed");
}
}
float rootQuadSize = (float)TerrainNode.Root.Length;
Vector4 tileWSD = new Vector4();
tileWSD.x = tileWidth;
tileWSD.y = rootQuadSize / (1 << level) / tileSize;
tileWSD.z = (tileWidth - b) / (World.GridResolution - 1.0f);
tileWSD.w = 0.0f;
m_upsampleMat.SetVector(m_uniforms.tileWSD, tileWSD);
if (level > 0)
{
RenderTexture tex = parentGpuSlot.Texture;
m_upsampleMat.SetTexture(m_uniforms.coarseLevelSampler, tex);
float dx = (tx % 2) * (tileSize / 2);
float dy = (ty % 2) * (tileSize / 2);
Vector4 coarseLevelOSL = new Vector4(dx / tex.width, dy / tex.height, 1.0f / tex.width, 0.0f);
m_upsampleMat.SetVector(m_uniforms.coarseLevelOSL, coarseLevelOSL);
}
else
{
m_upsampleMat.SetVector(m_uniforms.coarseLevelOSL, new Vector4(-1.0f, -1.0f, -1.0f, -1.0f));
}
if (m_residualProducer != null && m_residualProducer.HasTile(level, tx, ty))
{
Tile residualTile = m_residualProducer.FindTile(level, tx, ty, false, true);
CPUSlot <float> residualSlot = null;
if (residualTile != null)
{
residualSlot = residualTile.GetSlot(0) as CPUSlot <float>;
}
else
{
throw new MissingTileException("Find residual tile failed");
}
//Must clear residual tex before use or terrain will have artifacts at the seams. Not sure why.
RTUtility.ClearColor(m_residualTex, Color.clear);
m_residualBuffer.SetData(residualSlot.Data);
CBUtility.WriteIntoRenderTexture(m_residualTex, 1, m_residualBuffer, World.WriteData);
m_upsampleMat.SetTexture(m_uniforms.residualSampler, m_residualTex);
m_upsampleMat.SetVector(m_uniforms.residualOSH, new Vector4(0.25f / tileWidth, 0.25f / tileWidth, 2.0f / tileWidth, 1.0f));
}
else
{
m_upsampleMat.SetTexture(m_uniforms.residualSampler, null);
m_upsampleMat.SetVector(m_uniforms.residualOSH, new Vector4(0.0f, 0.0f, 1.0f, 0.0f));
}
float rs = level < m_noiseAmp.Length ? m_noiseAmp[level] : 0.0f;
int noiseL = 0;
int face = TerrainNode.Face;
if (rs != 0.0f)
{
if (face == 1)
{
int offset = 1 << level;
int bottomB = m_noise.Noise2D(tx + 0.5f, ty + offset) > 0.0f ? 1 : 0;
int rightB = (tx == offset - 1 ? m_noise.Noise2D(ty + offset + 0.5f, offset) : m_noise.Noise2D(tx + 1.0f, ty + offset + 0.5f)) > 0.0f ? 2 : 0;
int topB = (ty == offset - 1 ? m_noise.Noise2D((3.0f * offset - 1.0f - tx) + 0.5f, offset) : m_noise.Noise2D(tx + 0.5f, ty + offset + 1.0f)) > 0.0f ? 4 : 0;
int leftB = (tx == 0 ? m_noise.Noise2D((4.0f * offset - 1.0f - ty) + 0.5f, offset) : m_noise.Noise2D(tx, ty + offset + 0.5f)) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
else if (face == 6)
{
int offset = 1 << level;
int bottomB = (ty == 0 ? m_noise.Noise2D((3.0f * offset - 1.0f - tx) + 0.5f, 0) : m_noise.Noise2D(tx + 0.5f, ty - offset)) > 0.0f ? 1 : 0;
int rightB = (tx == offset - 1.0f ? m_noise.Noise2D((2.0f * offset - 1.0f - ty) + 0.5f, 0) : m_noise.Noise2D(tx + 1.0f, ty - offset + 0.5f)) > 0.0f ? 2 : 0;
int topB = m_noise.Noise2D(tx + 0.5f, ty - offset + 1.0f) > 0.0f ? 4 : 0;
int leftB = (tx == 0 ? m_noise.Noise2D(3.0f * offset + ty + 0.5f, 0) : m_noise.Noise2D(tx, ty - offset + 0.5f)) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
else
{
int offset = (1 << level) * (face - 2);
int bottomB = m_noise.Noise2D(tx + offset + 0.5f, ty) > 0.0f ? 1 : 0;
int rightB = m_noise.Noise2D((tx + offset + 1) % (4 << level), ty + 0.5f) > 0.0f ? 2 : 0;
int topB = m_noise.Noise2D(tx + offset + 0.5f, ty + 1.0f) > 0.0f ? 4 : 0;
int leftB = m_noise.Noise2D(tx + offset, ty + 0.5f) > 0.0f ? 8 : 0;
noiseL = bottomB + rightB + topB + leftB;
}
}
int[] noiseRs = new int[] { 0, 0, 1, 0, 2, 0, 1, 0, 3, 3, 1, 3, 2, 2, 1, 0 };
int noiseR = noiseRs[noiseL];
int[] noiseLs = new int[] { 0, 1, 1, 2, 1, 3, 2, 4, 1, 2, 3, 4, 2, 4, 4, 5 };
noiseL = noiseLs[noiseL];
m_upsampleMat.SetTexture(m_uniforms.noiseSampler, m_noiseTextures[noiseL]);
m_upsampleMat.SetVector(m_uniforms.noiseUVLH, new Vector4(noiseR, (noiseR + 1) % 4, 0, rs));
Graphics.Blit(null, gpuSlot.Texture, m_upsampleMat);
base.DoCreateTile(level, tx, ty, slot);
}