/// <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>
/// R_TextureAnimation
/// Returns the proper texture for a given time and base texture
/// </summary>
static texture_t TextureAnimation(texture_t t)
{
if (_CurrentEntity.frame != 0)
{
if (t.alternate_anims != null)
{
t = t.alternate_anims;
}
}
if (t.anim_total == 0)
{
return(t);
}
int reletive = (int)(Client.cl.time * 10) % t.anim_total;
int count = 0;
while (t.anim_min > reletive || t.anim_max <= reletive)
{
t = t.anim_next;
if (t == null)
{
Sys.Error("R_TextureAnimation: broken cycle");
}
if (++count > 100)
{
Sys.Error("R_TextureAnimation: infinite cycle");
}
}
return(t);
}
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;
}
}
static msurface_t _WarpFace; // used by SubdivideSurface()
/// <summary>
/// R_InitSky
/// called at level load
/// A sky texture is 256*128, with the right side being a masked overlay
/// </summary>
public static void InitSky(texture_t mt)
{
byte[] src = mt.pixels;
int offset = mt.offsets[0];
// make an average value for the back to avoid
// a fringe on the top level
const int size = 128 * 128;
uint[] trans = new uint[size];
uint[] v8to24 = Vid.Table8to24;
int r = 0;
int g = 0;
int b = 0;
Union4b rgba = Union4b.Empty;
for (int i = 0; i < 128; i++)
{
for (int j = 0; j < 128; j++)
{
int p = src[offset + i * 256 + j + 128];
rgba.ui0 = v8to24[p];
trans[(i * 128) + j] = rgba.ui0;
r += rgba.b0;
g += rgba.b1;
b += rgba.b2;
}
}
rgba.b0 = (byte)(r / size);
rgba.b1 = (byte)(g / size);
rgba.b2 = (byte)(b / size);
rgba.b3 = 0;
uint transpix = rgba.ui0;
if (_SolidSkyTexture == 0)
{
_SolidSkyTexture = Drawer.GenerateTextureNumber();
}
Drawer.Bind(_SolidSkyTexture);
GL.TexImage2D(TextureTarget.Texture2D, 0, Drawer.SolidFormat, 128, 128, 0, PixelFormat.Rgba, PixelType.UnsignedByte, trans);
Drawer.SetTextureFilters(TextureMinFilter.Linear, TextureMagFilter.Linear);
for (int i = 0; i < 128; i++)
{
for (int j = 0; j < 128; j++)
{
int p = src[offset + i * 256 + j];
if (p == 0)
{
trans[(i * 128) + j] = transpix;
}
else
{
trans[(i * 128) + j] = v8to24[p];
}
}
}
if (_AlphaSkyTexture == 0)
{
_AlphaSkyTexture = Drawer.GenerateTextureNumber();
}
Drawer.Bind(_AlphaSkyTexture);
GL.TexImage2D(TextureTarget.Texture2D, 0, Drawer.AlphaFormat, 128, 128, 0, PixelFormat.Rgba, PixelType.UnsignedByte, trans);
Drawer.SetTextureFilters(TextureMinFilter.Linear, TextureMagFilter.Linear);
}
/// <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_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);
}
}