/// <summary>
/// R_DrawSkyChain
/// </summary>
private static void DrawSkyChain(msurface_t s)
{
DisableMultitexture();
// used when gl_texsort is on
Drawer.Bind(_SolidSkyTexture);
_SpeedScale = (float)Host.RealTime * 8;
_SpeedScale -= (int)_SpeedScale & ~127;
for (msurface_t fa = s; fa != null; fa = fa.texturechain)
{
EmitSkyPolys(fa);
}
GL.Enable(EnableCap.Blend);
Drawer.Bind(_AlphaSkyTexture);
_SpeedScale = (float)Host.RealTime * 16;
_SpeedScale -= (int)_SpeedScale & ~127;
for (msurface_t fa = s; fa != null; fa = fa.texturechain)
{
EmitSkyPolys(fa);
}
GL.Disable(EnableCap.Blend);
}
/// <summary>
/// R_RenderBrushPoly
/// </summary>
private static void RenderBrushPoly(msurface_t fa)
{
_BrushPolys++;
if ((fa.flags & Surf.SURF_DRAWSKY) != 0)
{ // warp texture, no lightmaps
EmitBothSkyLayers(fa);
return;
}
texture_t t = TextureAnimation(fa.texinfo.texture);
Drawer.Bind(t.gl_texturenum);
if ((fa.flags & Surf.SURF_DRAWTURB) != 0)
{ // warp texture, no lightmaps
EmitWaterPolys(fa);
return;
}
if ((fa.flags & Surf.SURF_UNDERWATER) != 0)
{
DrawGLWaterPoly(fa.polys);
}
else
{
DrawGLPoly(fa.polys);
}
// add the poly to the proper lightmap chain
fa.polys.chain = _LightMapPolys[fa.lightmaptexturenum];
_LightMapPolys[fa.lightmaptexturenum] = fa.polys;
// check for lightmap modification
bool modified = false;
for (int maps = 0; maps < BspFile.MAXLIGHTMAPS && fa.styles[maps] != 255; maps++)
{
if (_LightStyleValue[fa.styles[maps]] != fa.cached_light[maps])
{
modified = true;
break;
}
}
if (modified ||
fa.dlightframe == _FrameCount || // dynamic this frame
fa.cached_dlight) // dynamic previously
{
if (_Dynamic.Value != 0)
{
_LightMapModified[fa.lightmaptexturenum] = true;
UpdateRect(fa, ref _LightMapRectChange[fa.lightmaptexturenum]);
int offset = fa.lightmaptexturenum * _LightMapBytes * BLOCK_WIDTH * BLOCK_HEIGHT;
offset += fa.light_t * BLOCK_WIDTH * _LightMapBytes + fa.light_s * _LightMapBytes;
BuildLightMap(fa, new ByteArraySegment(_LightMaps, offset), BLOCK_WIDTH * _LightMapBytes);
}
}
}
/// <summary>
/// GL_SubdivideSurface
/// Breaks a polygon up along axial 64 unit boundaries
/// so that turbulent and sky warps can be done reasonably.
/// </summary>
public static void SubdivideSurface(msurface_t fa)
{
_WarpFace = fa;
//
// convert edges back to a normal polygon
//
int numverts = 0;
Vector3[] verts = new Vector3[fa.numedges + 1]; // + 1 for wrap case
model_t loadmodel = Mod.Model;
for (int i = 0; i < fa.numedges; i++)
{
int lindex = loadmodel.surfedges[fa.firstedge + i];
if (lindex > 0)
{
verts[numverts] = loadmodel.vertexes[loadmodel.edges[lindex].v[0]].position;
}
else
{
verts[numverts] = loadmodel.vertexes[loadmodel.edges[-lindex].v[1]].position;
}
numverts++;
}
SubdividePolygon(numverts, verts);
}
private static void UpdateRect(msurface_t fa, ref glRect_t theRect)
{
if (fa.light_t < theRect.t)
{
if (theRect.h != 0)
{
theRect.h += (byte)(theRect.t - fa.light_t);
}
theRect.t = (byte)fa.light_t;
}
if (fa.light_s < theRect.l)
{
if (theRect.w != 0)
{
theRect.w += (byte)(theRect.l - fa.light_s);
}
theRect.l = (byte)fa.light_s;
}
int smax = (fa.extents[0] >> 4) + 1;
int tmax = (fa.extents[1] >> 4) + 1;
if ((theRect.w + theRect.l) < (fa.light_s + smax))
{
theRect.w = (byte)((fa.light_s - theRect.l) + smax);
}
if ((theRect.h + theRect.t) < (fa.light_t + tmax))
{
theRect.h = (byte)((fa.light_t - theRect.t) + tmax);
}
}
/// <summary>
/// R_MirrorChain
/// </summary>
private static void MirrorChain(msurface_t s)
{
if (_IsMirror)
{
return;
}
_IsMirror = true;
_MirrorPlane = s.plane;
}
static void DrawTextureChains()
{
if (_glTexSort.Value == 0)
{
DisableMultitexture();
if (_SkyChain != null)
{
DrawSkyChain(_SkyChain);
_SkyChain = null;
}
return;
}
model_t world = Client.cl.worldmodel;
for (int i = 0; i < world.numtextures; i++)
{
texture_t t = world.textures[i];
if (t == null)
{
continue;
}
msurface_t s = t.texturechain;
if (s == null)
{
continue;
}
if (i == _SkyTextureNum)
{
DrawSkyChain(s);
}
else if (i == _MirrorTextureNum && _MirrorAlpha.Value != 1.0f)
{
MirrorChain(s);
continue;
}
else
{
if ((s.flags & Surf.SURF_DRAWTURB) != 0 && _WaterAlpha.Value != 1.0f)
{
continue; // draw translucent water later
}
for (; s != null; s = s.texturechain)
{
RenderBrushPoly(s);
}
}
t.texturechain = null;
}
}
/// <summary>
/// GL_CreateSurfaceLightmap
/// </summary>
static void CreateSurfaceLightmap(msurface_t surf)
{
if ((surf.flags & (Surf.SURF_DRAWSKY | Surf.SURF_DRAWTURB)) != 0)
{
return;
}
int smax = (surf.extents[0] >> 4) + 1;
int tmax = (surf.extents[1] >> 4) + 1;
surf.lightmaptexturenum = AllocBlock(smax, tmax, ref surf.light_s, ref surf.light_t);
int offset = surf.lightmaptexturenum * _LightMapBytes * BLOCK_WIDTH * BLOCK_HEIGHT;
offset += (surf.light_t * BLOCK_WIDTH + surf.light_s) * _LightMapBytes;
BuildLightMap(surf, new ByteArraySegment(_LightMaps, offset), BLOCK_WIDTH * _LightMapBytes);
}
/// <summary>
/// EmitBothSkyLayers
/// Does a sky warp on the pre-fragmented glpoly_t chain
/// This will be called for brushmodels, the world
/// will have them chained together.
/// </summary>
private static void EmitBothSkyLayers(msurface_t fa)
{
DisableMultitexture();
Drawer.Bind(_SolidSkyTexture);
_SpeedScale = (float)Host.RealTime * 8;
_SpeedScale -= (int)_SpeedScale & ~127;
EmitSkyPolys(fa);
GL.Enable(EnableCap.Blend);
Drawer.Bind(_AlphaSkyTexture);
_SpeedScale = (float)Host.RealTime * 16;
_SpeedScale -= (int)_SpeedScale & ~127;
EmitSkyPolys(fa);
GL.Disable(EnableCap.Blend);
}
/// <summary>
/// R_RenderDynamicLightmaps
/// Multitexture
/// </summary>
static void RenderDynamicLightmaps(msurface_t fa)
{
_BrushPolys++;
if ((fa.flags & (Surf.SURF_DRAWSKY | Surf.SURF_DRAWTURB)) != 0)
{
return;
}
fa.polys.chain = _LightMapPolys[fa.lightmaptexturenum];
_LightMapPolys[fa.lightmaptexturenum] = fa.polys;
// check for lightmap modification
bool flag = false;
for (int maps = 0; maps < BspFile.MAXLIGHTMAPS && fa.styles[maps] != 255; maps++)
{
if (_LightStyleValue[fa.styles[maps]] != fa.cached_light[maps])
{
flag = true;
break;
}
}
if (flag ||
fa.dlightframe == _FrameCount || // dynamic this frame
fa.cached_dlight) // dynamic previously
{
if (_Dynamic.Value != 0)
{
_LightMapModified[fa.lightmaptexturenum] = true;
UpdateRect(fa, ref _LightMapRectChange[fa.lightmaptexturenum]);
int offset = fa.lightmaptexturenum * _LightMapBytes * BLOCK_WIDTH * BLOCK_HEIGHT +
fa.light_t * BLOCK_WIDTH * _LightMapBytes + fa.light_s * _LightMapBytes;
BuildLightMap(fa, new ByteArraySegment(_LightMaps, offset), BLOCK_WIDTH * _LightMapBytes);
}
}
}
/// <summary>
/// EmitWaterPolys
/// Does a water warp on the pre-fragmented glpoly_t chain
/// </summary>
static void EmitWaterPolys(msurface_t fa)
{
for (glpoly_t p = fa.polys; p != null; p = p.next)
{
GL.Begin(PrimitiveType.Polygon);
for (int i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
float os = v[3];
float ot = v[4];
float s = os + _TurbSin[(int)((ot * 0.125 + Host.RealTime) * TURBSCALE) & 255];
s *= (1.0f / 64);
float t = ot + _TurbSin[(int)((os * 0.125 + Host.RealTime) * TURBSCALE) & 255];
t *= (1.0f / 64);
GL.TexCoord2(s, t);
GL.Vertex3(v);
}
GL.End();
}
}
/// <summary>
/// EmitSkyPolys
/// </summary>
static void EmitSkyPolys(msurface_t fa)
{
for (glpoly_t p = fa.polys; p != null; p = p.next)
{
GL.Begin(PrimitiveType.Polygon);
for (int i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
Vector3 dir = new Vector3(v[0] - Render.Origin.X, v[1] - Render.Origin.Y, v[2] - Render.Origin.Z);
dir.Z *= 3; // flatten the sphere
dir.Normalize();
dir *= 6 * 63;
float s = (_SpeedScale + dir.X) / 128.0f;
float t = (_SpeedScale + dir.Y) / 128.0f;
GL.TexCoord2(s, t);
GL.Vertex3(v);
}
GL.End();
}
}
/// <summary>
/// R_MarkLights
/// </summary>
static void MarkLights(dlight_t light, int bit, mnodebase_t node)
{
if (node.contents < 0)
{
return;
}
mnode_t n = (mnode_t)node;
mplane_t splitplane = n.plane;
float dist = Vector3.Dot(light.origin, splitplane.normal) - splitplane.dist;
if (dist > light.radius)
{
MarkLights(light, bit, n.children[0]);
return;
}
if (dist < -light.radius)
{
MarkLights(light, bit, n.children[1]);
return;
}
// mark the polygons
for (int i = 0; i < n.numsurfaces; i++)
{
msurface_t surf = Client.cl.worldmodel.surfaces[n.firstsurface + i];
if (surf.dlightframe != _DlightFrameCount)
{
surf.dlightbits = 0;
surf.dlightframe = _DlightFrameCount;
}
surf.dlightbits |= bit;
}
MarkLights(light, bit, n.children[0]);
MarkLights(light, bit, n.children[1]);
}
/// <summary>
/// R_DrawSequentialPoly
/// Systems that have fast state and texture changes can
/// just do everything as it passes with no need to sort
/// </summary>
static void DrawSequentialPoly(msurface_t s)
{
//
// normal lightmaped poly
//
if ((s.flags & (Surf.SURF_DRAWSKY | Surf.SURF_DRAWTURB | Surf.SURF_UNDERWATER)) == 0)
{
RenderDynamicLightmaps(s);
glpoly_t p = s.polys;
texture_t t = TextureAnimation(s.texinfo.texture);
if (Vid.glMTexable)
{
// Binds world to texture env 0
Drawer.SelectTexture(MTexTarget.TEXTURE0_SGIS);
Drawer.Bind(t.gl_texturenum);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
// Binds lightmap to texenv 1
EnableMultitexture(); // Same as SelectTexture (TEXTURE1)
Drawer.Bind(_LightMapTextures + s.lightmaptexturenum);
int i = s.lightmaptexturenum;
if (_LightMapModified[i])
{
CommitLightmap(i);
}
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Blend);
GL.Begin(PrimitiveType.Polygon);
for (i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
GL.MultiTexCoord2(TextureUnit.Texture0, v[3], v[4]);
GL.MultiTexCoord2(TextureUnit.Texture1, v[5], v[6]);
GL.Vertex3(v);
}
GL.End();
return;
}
else
{
Drawer.Bind(t.gl_texturenum);
GL.Begin(PrimitiveType.Polygon);
for (int i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
GL.TexCoord2(v[3], v[4]);
GL.Vertex3(v);
}
GL.End();
Drawer.Bind(_LightMapTextures + s.lightmaptexturenum);
GL.Enable(EnableCap.Blend);
GL.Begin(PrimitiveType.Polygon);
for (int i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
GL.TexCoord2(v[5], v[6]);
GL.Vertex3(v);
}
GL.End();
GL.Disable(EnableCap.Blend);
}
return;
}
//
// subdivided water surface warp
//
if ((s.flags & Surf.SURF_DRAWTURB) != 0)
{
DisableMultitexture();
Drawer.Bind(s.texinfo.texture.gl_texturenum);
EmitWaterPolys(s);
return;
}
//
// subdivided sky warp
//
if ((s.flags & Surf.SURF_DRAWSKY) != 0)
{
DisableMultitexture();
Drawer.Bind(_SolidSkyTexture);
_SpeedScale = (float)Host.RealTime * 8;
_SpeedScale -= (int)_SpeedScale & ~127;
EmitSkyPolys(s);
GL.Enable(EnableCap.Blend);
Drawer.Bind(_AlphaSkyTexture);
_SpeedScale = (float)Host.RealTime * 16;
_SpeedScale -= (int)_SpeedScale & ~127;
EmitSkyPolys(s);
GL.Disable(EnableCap.Blend);
return;
}
//
// underwater warped with lightmap
//
RenderDynamicLightmaps(s);
if (Vid.glMTexable)
{
texture_t t = TextureAnimation(s.texinfo.texture);
Drawer.SelectTexture(MTexTarget.TEXTURE0_SGIS);
Drawer.Bind(t.gl_texturenum);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
EnableMultitexture();
Drawer.Bind(_LightMapTextures + s.lightmaptexturenum);
int i = s.lightmaptexturenum;
if (_LightMapModified[i])
{
CommitLightmap(i);
}
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Blend);
GL.Begin(PrimitiveType.TriangleFan);
glpoly_t p = s.polys;
float[] nv = new float[3];
for (i = 0; i < p.numverts; i++)
{
float[] v = p.verts[i];
GL.MultiTexCoord2(TextureUnit.Texture0, v[3], v[4]);
GL.MultiTexCoord2(TextureUnit.Texture1, v[5], v[6]);
nv[0] = (float)(v[0] + 8 * Math.Sin(v[1] * 0.05 + Host.RealTime) * Math.Sin(v[2] * 0.05 + Host.RealTime));
nv[1] = (float)(v[1] + 8 * Math.Sin(v[0] * 0.05 + Host.RealTime) * Math.Sin(v[2] * 0.05 + Host.RealTime));
nv[2] = v[2];
GL.Vertex3(nv);
}
GL.End();
}
else
{
glpoly_t p = s.polys;
texture_t t = TextureAnimation(s.texinfo.texture);
Drawer.Bind(t.gl_texturenum);
DrawGLWaterPoly(p);
Drawer.Bind(_LightMapTextures + s.lightmaptexturenum);
GL.Enable(EnableCap.Blend);
DrawGLWaterPolyLightmap(p);
GL.Disable(EnableCap.Blend);
}
}
/// <summary>
/// BuildSurfaceDisplayList
/// </summary>
static void BuildSurfaceDisplayList(msurface_t fa)
{
// reconstruct the polygon
medge_t[] pedges = _CurrentModel.edges;
int lnumverts = fa.numedges;
//
// draw texture
//
glpoly_t poly = new glpoly_t();
poly.AllocVerts(lnumverts);
poly.next = fa.polys;
poly.flags = fa.flags;
fa.polys = poly;
ushort[] r_pedge_v;
Vector3 vec;
for (int i = 0; i < lnumverts; i++)
{
int lindex = _CurrentModel.surfedges[fa.firstedge + i];
if (lindex > 0)
{
r_pedge_v = pedges[lindex].v;
vec = _CurrentVertBase[r_pedge_v[0]].position;
}
else
{
r_pedge_v = pedges[-lindex].v;
vec = _CurrentVertBase[r_pedge_v[1]].position;
}
float s = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[0]) + fa.texinfo.vecs[0].W;
s /= fa.texinfo.texture.width;
float t = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[1]) + fa.texinfo.vecs[1].W;
t /= fa.texinfo.texture.height;
poly.verts[i][0] = vec.X;
poly.verts[i][1] = vec.Y;
poly.verts[i][2] = vec.Z;
poly.verts[i][3] = s;
poly.verts[i][4] = t;
//
// lightmap texture coordinates
//
s = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[0]) + fa.texinfo.vecs[0].W;
s -= fa.texturemins[0];
s += fa.light_s * 16;
s += 8;
s /= BLOCK_WIDTH * 16;
t = Mathlib.DotProduct(ref vec, ref fa.texinfo.vecs[1]) + fa.texinfo.vecs[1].W;
t -= fa.texturemins[1];
t += fa.light_t * 16;
t += 8;
t /= BLOCK_HEIGHT * 16;
poly.verts[i][5] = s;
poly.verts[i][6] = t;
}
//
// remove co-linear points - Ed
//
if (_glKeepTJunctions.Value == 0 && (fa.flags & Surf.SURF_UNDERWATER) == 0)
{
for (int i = 0; i < lnumverts; ++i)
{
if (IsCollinear(poly.verts[(i + lnumverts - 1) % lnumverts],
poly.verts[i],
poly.verts[(i + 1) % lnumverts]))
{
int j;
for (j = i + 1; j < lnumverts; ++j)
{
//int k;
for (int k = 0; k < Mod.VERTEXSIZE; ++k)
{
poly.verts[j - 1][k] = poly.verts[j][k];
}
}
--lnumverts;
++_ColinElim;
// retry next vertex next time, which is now current vertex
--i;
}
}
}
poly.numverts = lnumverts;
}
/// <summary>
/// R_BuildLightMap
/// Combine and scale multiple lightmaps into the 8.8 format in blocklights
/// </summary>
static void BuildLightMap(msurface_t surf, ByteArraySegment dest, int stride)
{
surf.cached_dlight = (surf.dlightframe == _FrameCount);
int smax = (surf.extents[0] >> 4) + 1;
int tmax = (surf.extents[1] >> 4) + 1;
int size = smax * tmax;
int srcOffset = surf.sampleofs;
byte[] lightmap = surf.sample_base;// surf.samples;
// set to full bright if no light data
if (_FullBright.Value != 0 || Client.cl.worldmodel.lightdata == null)
{
for (int i = 0; i < size; i++)
{
_BlockLights[i] = 255 * 256;
}
}
else
{
// clear to no light
for (int i = 0; i < size; i++)
{
_BlockLights[i] = 0;
}
// add all the lightmaps
if (lightmap != null)
{
for (int maps = 0; maps < BspFile.MAXLIGHTMAPS && surf.styles[maps] != 255; maps++)
{
int scale = _LightStyleValue[surf.styles[maps]];
surf.cached_light[maps] = scale; // 8.8 fraction
for (int i = 0; i < size; i++)
{
_BlockLights[i] += (uint)(lightmap[srcOffset + i] * scale);
}
srcOffset += size; // lightmap += size; // skip to next lightmap
}
}
// add all the dynamic lights
if (surf.dlightframe == _FrameCount)
{
AddDynamicLights(surf);
}
}
// bound, invert, and shift
//store:
int blOffset = 0;
int destOffset = dest.StartIndex;
byte[] data = dest.Data;
switch (Drawer.LightMapFormat)
{
case PixelFormat.Rgba:
stride -= (smax << 2);
for (int i = 0; i < tmax; i++, destOffset += stride) // dest += stride
{
for (int j = 0; j < smax; j++)
{
uint t = _BlockLights[blOffset++]; // *bl++;
t >>= 7;
if (t > 255)
{
t = 255;
}
data[destOffset + 3] = (byte)(255 - t); //dest[3] = 255 - t;
destOffset += 4;
}
}
break;
case PixelFormat.Alpha:
case PixelFormat.Luminance:
//case GL_INTENSITY:
for (int i = 0; i < tmax; i++, destOffset += stride)
{
for (int j = 0; j < smax; j++)
{
uint t = _BlockLights[blOffset++]; // *bl++;
t >>= 7;
if (t > 255)
{
t = 255;
}
data[destOffset + j] = (byte)(255 - t); // dest[j] = 255 - t;
}
}
break;
default:
Sys.Error("Bad lightmap format");
break;
}
}
/// <summary>
/// R_AddDynamicLights
/// </summary>
static void AddDynamicLights(msurface_t surf)
{
int smax = (surf.extents[0] >> 4) + 1;
int tmax = (surf.extents[1] >> 4) + 1;
mtexinfo_t tex = surf.texinfo;
dlight_t[] dlights = Client.DLights;
for (int lnum = 0; lnum < Client.MAX_DLIGHTS; lnum++)
{
if ((surf.dlightbits & (1 << lnum)) == 0)
{
continue; // not lit by this light
}
float rad = dlights[lnum].radius;
float dist = Vector3.Dot(dlights[lnum].origin, surf.plane.normal) - surf.plane.dist;
rad -= Math.Abs(dist);
float minlight = dlights[lnum].minlight;
if (rad < minlight)
{
continue;
}
minlight = rad - minlight;
Vector3 impact = dlights[lnum].origin - surf.plane.normal * dist;
float local0 = Vector3.Dot(impact, tex.vecs[0].Xyz) + tex.vecs[0].W;
float local1 = Vector3.Dot(impact, tex.vecs[1].Xyz) + tex.vecs[1].W;
local0 -= surf.texturemins[0];
local1 -= surf.texturemins[1];
for (int t = 0; t < tmax; t++)
{
int td = (int)(local1 - t * 16);
if (td < 0)
{
td = -td;
}
for (int s = 0; s < smax; s++)
{
int sd = (int)(local0 - s * 16);
if (sd < 0)
{
sd = -sd;
}
if (sd > td)
{
dist = sd + (td >> 1);
}
else
{
dist = td + (sd >> 1);
}
if (dist < minlight)
{
_BlockLights[t * smax + s] += (uint)((rad - dist) * 256);
}
}
}
}
}
/// <summary>
/// R_DrawWaterSurfaces
/// </summary>
static void DrawWaterSurfaces()
{
if (_WaterAlpha.Value == 1.0f && _glTexSort.Value != 0)
{
return;
}
//
// go back to the world matrix
//
GL.LoadMatrix(ref _WorldMatrix);
if (_WaterAlpha.Value < 1.0)
{
GL.Enable(EnableCap.Blend);
GL.Color4(1, 1, 1, _WaterAlpha.Value);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
}
if (_glTexSort.Value == 0)
{
if (_WaterChain == null)
{
return;
}
for (msurface_t s = _WaterChain; s != null; s = s.texturechain)
{
Drawer.Bind(s.texinfo.texture.gl_texturenum);
EmitWaterPolys(s);
}
_WaterChain = null;
}
else
{
for (int i = 0; i < Client.cl.worldmodel.numtextures; i++)
{
texture_t t = Client.cl.worldmodel.textures[i];
if (t == null)
{
continue;
}
msurface_t s = t.texturechain;
if (s == null)
{
continue;
}
if ((s.flags & Surf.SURF_DRAWTURB) == 0)
{
continue;
}
// set modulate mode explicitly
Drawer.Bind(t.gl_texturenum);
for (; s != null; s = s.texturechain)
{
EmitWaterPolys(s);
}
t.texturechain = null;
}
}
if (_WaterAlpha.Value < 1.0)
{
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
GL.Color4(1f, 1, 1, 1);
GL.Disable(EnableCap.Blend);
}
}
/// <summary>
/// R_RecursiveWorldNode
/// </summary>
static void RecursiveWorldNode(mnodebase_t node)
{
if (node.contents == Contents.CONTENTS_SOLID)
{
return; // solid
}
if (node.visframe != _VisFrameCount)
{
return;
}
if (CullBox(ref node.mins, ref node.maxs))
{
return;
}
int c;
// if a leaf node, draw stuff
if (node.contents < 0)
{
mleaf_t pleaf = (mleaf_t)node;
msurface_t[] marks = pleaf.marksurfaces;
int mark = pleaf.firstmarksurface;
c = pleaf.nummarksurfaces;
if (c != 0)
{
do
{
marks[mark].visframe = _FrameCount;
mark++;
} while (--c != 0);
}
// deal with model fragments in this leaf
if (pleaf.efrags != null)
{
StoreEfrags(pleaf.efrags);
}
return;
}
// node is just a decision point, so go down the apropriate sides
mnode_t n = (mnode_t)node;
// find which side of the node we are on
mplane_t plane = n.plane;
double dot;
switch (plane.type)
{
case Planes.PLANE_X:
dot = _ModelOrg.X - plane.dist;
break;
case Planes.PLANE_Y:
dot = _ModelOrg.Y - plane.dist;
break;
case Planes.PLANE_Z:
dot = _ModelOrg.Z - plane.dist;
break;
default:
dot = Vector3.Dot(_ModelOrg, plane.normal) - plane.dist;
break;
}
int side = (dot >= 0 ? 0 : 1);
// recurse down the children, front side first
RecursiveWorldNode(n.children[side]);
// draw stuff
c = n.numsurfaces;
if (c != 0)
{
msurface_t[] surf = Client.cl.worldmodel.surfaces;
int offset = n.firstsurface;
if (dot < 0 - QDef.BACKFACE_EPSILON)
{
side = Surf.SURF_PLANEBACK;
}
else if (dot > QDef.BACKFACE_EPSILON)
{
side = 0;
}
for (; c != 0; c--, offset++)
{
if (surf[offset].visframe != _FrameCount)
{
continue;
}
// don't backface underwater surfaces, because they warp
if ((surf[offset].flags & Surf.SURF_UNDERWATER) == 0 && ((dot < 0) ^ ((surf[offset].flags & Surf.SURF_PLANEBACK) != 0)))
{
continue; // wrong side
}
// if sorting by texture, just store it out
if (_glTexSort.Value != 0)
{
if (!_IsMirror || surf[offset].texinfo.texture != Client.cl.worldmodel.textures[_MirrorTextureNum])
{
surf[offset].texturechain = surf[offset].texinfo.texture.texturechain;
surf[offset].texinfo.texture.texturechain = surf[offset];
}
}
else if ((surf[offset].flags & Surf.SURF_DRAWSKY) != 0)
{
surf[offset].texturechain = _SkyChain;
_SkyChain = surf[offset];
}
else if ((surf[offset].flags & Surf.SURF_DRAWTURB) != 0)
{
surf[offset].texturechain = _WaterChain;
_WaterChain = surf[offset];
}
else
{
DrawSequentialPoly(surf[offset]);
}
}
}
// recurse down the back side
RecursiveWorldNode(n.children[side == 0 ? 1 : 0]);
}
