/// <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 < bsp_file.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_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>
/// 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);
}
// R_InitParticleTexture
static void InitParticleTexture()
{
_ParticleTexture = Drawer.GenerateTextureNumber();// texture_extension_number++;
Drawer.Bind(_ParticleTexture);
byte[,,] data = new byte[8, 8, 4];
for (int x = 0; x < 8; x++)
{
for (int y = 0; y < 8; y++)
{
data[y, x, 0] = 255;
data[y, x, 1] = 255;
data[y, x, 2] = 255;
data[y, x, 3] = (byte)(_DotTexture[x, y] * 255);
}
}
GL.TexImage2D(TextureTarget.Texture2D, 0, Drawer.AlphaFormat, 8, 8, 0, PixelFormat.Rgba, PixelType.UnsignedByte, data);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
Drawer.SetTextureFilters(TextureMinFilter.Linear, TextureMagFilter.Linear);
}
/// <summary>
/// R_DrawParticles
/// </summary>
private static void DrawParticles()
{
Drawer.Bind(_ParticleTexture);
GL.Enable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Modulate);
GL.Begin(BeginMode.Triangles);
Vector3 up = Render.ViewUp * 1.5f;
Vector3 right = Render.ViewRight * 1.5f;
float frametime = (float)(Client.cl.time - Client.cl.oldtime);
float time3 = frametime * 15;
float time2 = frametime * 10;
float time1 = frametime * 5;
float grav = frametime * Server.Gravity * 0.05f;
float dvel = 4 * frametime;
while (true)
{
particle_t kill = _ActiveParticles;
if (kill != null && kill.die < Client.cl.time)
{
_ActiveParticles = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
for (particle_t p = _ActiveParticles; p != null; p = p.next)
{
while (true)
{
particle_t kill = p.next;
if (kill != null && kill.die < Client.cl.time)
{
p.next = kill.next;
kill.next = _FreeParticles;
_FreeParticles = kill;
continue;
}
break;
}
// hack a scale up to keep particles from disapearing
float scale = Vector3.Dot((p.org - Render.Origin), Render.ViewPn);
if (scale < 20)
{
scale = 1;
}
else
{
scale = 1 + scale * 0.004f;
}
// Uze todo: check if this is correct
uint color = Vid.Table8to24[(byte)p.color];
GL.Color4((byte)(color & 0xff), (byte)((color >> 8) & 0xff), (byte)((color >> 16) & 0xff), (byte)((color >> 24) & 0xff));
GL.TexCoord2(0f, 0);
GL.Vertex3(p.org);
GL.TexCoord2(1f, 0);
Vector3 v = p.org + up * scale;
GL.Vertex3(v);
GL.TexCoord2(0f, 1);
v = p.org + right * scale;
GL.Vertex3(v);
p.org += p.vel * frametime;
switch (p.type)
{
case ptype_t.pt_static:
break;
case ptype_t.pt_fire:
p.ramp += time1;
if (p.ramp >= 6)
{
p.die = -1;
}
else
{
p.color = _Ramp3[(int)p.ramp];
}
p.vel.Z += grav;
break;
case ptype_t.pt_explode:
p.ramp += time2;
if (p.ramp >= 8)
{
p.die = -1;
}
else
{
p.color = _Ramp1[(int)p.ramp];
}
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_explode2:
p.ramp += time3;
if (p.ramp >= 8)
{
p.die = -1;
}
else
{
p.color = _Ramp2[(int)p.ramp];
}
p.vel -= p.vel * frametime;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob:
p.vel += p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_blob2:
p.vel -= p.vel * dvel;
p.vel.Z -= grav;
break;
case ptype_t.pt_grav:
case ptype_t.pt_slowgrav:
p.vel.Z -= grav;
break;
}
}
GL.End();
GL.Disable(EnableCap.Blend);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)TextureEnvMode.Replace);
}
/// <summary>
/// R_BlendLightmaps
/// </summary>
private static void BlendLightmaps()
{
if (_FullBright.Value != 0)
{
return;
}
if (_glTexSort.Value == 0)
{
return;
}
GL.DepthMask(false); // don't bother writing Z
if (Drawer.LightMapFormat == PixelFormat.Luminance)
{
GL.BlendFunc(BlendingFactor.Zero, BlendingFactor.OneMinusSrcColor);
}
//else if (gl_lightmap_format == GL_INTENSITY)
//{
// glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
// glColor4f(0, 0, 0, 1);
// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//}
if (_LightMap.Value == 0)
{
GL.Enable(EnableCap.Blend);
}
for (int i = 0; i < MAX_LIGHTMAPS; i++)
{
glpoly_t p = _LightMapPolys[i];
if (p == null)
{
continue;
}
Drawer.Bind(_LightMapTextures + i);
if (_LightMapModified[i])
{
CommitLightmap(i);
}
for ( ; p != null; p = p.chain)
{
if ((p.flags & Surf.SURF_UNDERWATER) != 0)
{
DrawGLWaterPolyLightmap(p);
}
else
{
GL.Begin(PrimitiveType.Polygon);
for (int j = 0; j < p.numverts; j++)
{
float[] v = p.verts[j];
GL.TexCoord2(v[5], v[6]);
GL.Vertex3(v);
}
GL.End();
}
}
}
GL.Disable(EnableCap.Blend);
if (Drawer.LightMapFormat == PixelFormat.Luminance)
{
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
}
//else if (gl_lightmap_format == GL_INTENSITY)
//{
// glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
// glColor4f(1, 1, 1, 1);
//}
GL.DepthMask(true); // back to normal Z buffering
}
private static byte[] _LightMaps = new byte[4 * MAX_LIGHTMAPS * BLOCK_WIDTH * BLOCK_HEIGHT]; // lightmaps
/// <summary>
/// GL_BuildLightmaps
/// Builds the lightmap texture with all the surfaces from all brush models
/// </summary>
private static void BuildLightMaps()
{
Array.Clear(_Allocated, 0, _Allocated.Length);
//memset (allocated, 0, sizeof(allocated));
_FrameCount = 1; // no dlightcache
if (_LightMapTextures == 0)
{
_LightMapTextures = Drawer.GenerateTextureNumberRange(MAX_LIGHTMAPS);
}
Drawer.LightMapFormat = PixelFormat.Luminance;// GL_LUMINANCE;
// default differently on the Permedia
if (Scr.IsPermedia)
{
Drawer.LightMapFormat = PixelFormat.Rgba;
}
if (common.HasParam("-lm_1"))
{
Drawer.LightMapFormat = PixelFormat.Luminance;
}
if (common.HasParam("-lm_a"))
{
Drawer.LightMapFormat = PixelFormat.Alpha;
}
//if (Common.HasParam("-lm_i"))
// Drawer.LightMapFormat = PixelFormat.Intensity;
//if (Common.HasParam("-lm_2"))
// Drawer.LightMapFormat = PixelFormat.Rgba4;
if (common.HasParam("-lm_4"))
{
Drawer.LightMapFormat = PixelFormat.Rgba;
}
switch (Drawer.LightMapFormat)
{
case PixelFormat.Rgba:
_LightMapBytes = 4;
break;
//case PixelFormat.Rgba4:
//_LightMapBytes = 2;
//break;
case PixelFormat.Luminance:
//case PixelFormat.Intensity:
case PixelFormat.Alpha:
_LightMapBytes = 1;
break;
}
for (int j = 1; j < QDef.MAX_MODELS; j++)
{
model_t m = client.cl.model_precache[j];
if (m == null)
{
break;
}
if (m.name != null && m.name.StartsWith("*"))
{
continue;
}
_CurrentVertBase = m.vertexes;
_CurrentModel = m;
for (int i = 0; i < m.numsurfaces; i++)
{
CreateSurfaceLightmap(m.surfaces[i]);
if ((m.surfaces[i].flags & Surf.SURF_DRAWTURB) != 0)
{
continue;
}
if ((m.surfaces[i].flags & Surf.SURF_DRAWSKY) != 0)
{
continue;
}
BuildSurfaceDisplayList(m.surfaces[i]);
}
}
if (_glTexSort.Value == 0)
{
Drawer.SelectTexture(MTexTarget.TEXTURE1_SGIS);
}
//
// upload all lightmaps that were filled
//
GCHandle handle = GCHandle.Alloc(_LightMaps, GCHandleType.Pinned);
try
{
IntPtr ptr = handle.AddrOfPinnedObject();
long lmAddr = ptr.ToInt64();
for (int i = 0; i < MAX_LIGHTMAPS; i++)
{
if (_Allocated[i, 0] == 0)
{
break; // no more used
}
_LightMapModified[i] = false;
_LightMapRectChange[i].l = BLOCK_WIDTH;
_LightMapRectChange[i].t = BLOCK_HEIGHT;
_LightMapRectChange[i].w = 0;
_LightMapRectChange[i].h = 0;
Drawer.Bind(_LightMapTextures + i);
Drawer.SetTextureFilters(TextureMinFilter.Linear, TextureMagFilter.Linear);
long addr = lmAddr + i * BLOCK_WIDTH * BLOCK_HEIGHT * _LightMapBytes;
GL.TexImage2D(TextureTarget.Texture2D, 0, (PixelInternalFormat)_LightMapBytes,
BLOCK_WIDTH, BLOCK_HEIGHT, 0, Drawer.LightMapFormat, PixelType.UnsignedByte, new IntPtr(addr));
}
}
finally
{
handle.Free();
}
if (_glTexSort.Value == 0)
{
Drawer.SelectTexture(MTexTarget.TEXTURE0_SGIS);
}
}
/// <summary>
/// R_DrawWaterSurfaces
/// </summary>
private 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>
private 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);
}
}
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);
}