- Temp := Power(2,ALightmap[0][y].Exponent);
- Lightmaps[x].Data[0][y] := SetVector(ALightmap[0][y].r*Temp,ALightmap[0][y].g*Temp,ALightmap[0][y].b*Temp);
Im having problems loading lightmaps... or converting the data.
As u can see from the pics the lightmaps unity makes (there is no colours or anything applyed other than a lightmap) are screwed.
Code:
- for x := 0 to NumFaces-1 do
- begin
- If Faces[x].LightOffset < 0 then
- begin
- Lightmaps[x].TextureId := 0;
- continue;
- end;
- Seek(f, Header.lumps[VBSP_LUMP_LIGHTMAPS].fileofs + Faces[x].LightOffset);
- SetLength(ALightmap[0],(Faces[x].LightmapTextureSizeInLuxels[0]+1) * (Faces[x].LightmapTextureSizeInLuxels[1]+1));
- BlockRead(F,ALightmap[0][0],(Faces[x].LightmapTextureSizeInLuxels[0]+1) * (Faces[x].LightmapTextureSizeInLuxels[1]+1)*SizeOf(TColorRGBExp32));
- SetLength(Lightmaps[x].Data[0],(Faces[x].LightmapTextureSizeInLuxels[0]+1) * (Faces[x].LightmapTextureSizeInLuxels[1]+1));
- for y := 0 to (Faces[x].LightmapTextureSizeInLuxels[0]+1) * (Faces[x].LightmapTextureSizeInLuxels[1]+1)-1 do
- begin
- Temp := Power(2,ALightmap[0][y].Exponent);
- Lightmaps[x].Data[0][y] := SetVector(ALightmap[0][y].r*Temp,ALightmap[0][y].g*Temp,ALightmap[0][y].b*Temp);
- end;
- //Lightmaps[x].Data[0][y] := SetVector(Power(ALightmap[0][y].r,ALightmap[0][y].Exponent),Power(ALightmap[0][y].g,ALightmap[0][y].Exponent),Power(ALightmap[0][y].b,ALightmap[0][y].Exponent));
- CreateLightmapTexture(Lightmaps[x].TextureId,Lightmaps[x],(Faces[x].LightmapTextureSizeInLuxels[0]),(Faces[x].LightmapTextureSizeInLuxels[1]));
- WorkOutPercentage(TotalPer,x,CurrentPer,Percentage,Step);
- end;
- Procedure TVBSPMap.CreateLightmapTexture(var texture:GLUINT; pImageBits:TVBSPLightmap; width,height:integer);
- begin
- // Generate a texture with the associative texture ID stored in the array
- glGenTextures(1, @texture);
- // This sets the alignment requirements for the start of each pixel row in memory.
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- // Bind the texture to the texture arrays index and init the texture
- glBindTexture(GL_TEXTURE_2D, texture);
- // Change the lightmap gamma values by our desired gamma
- // ChangeGammaLightmap(pImageBits, width,height, Engine.Map.Gamma);
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- //Assign the mip map levels
- glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
- // Build Mipmaps (builds different versions of the picture for distances - looks better)
- gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGB, width, height, GL_RGB, GL_FLOAT, @pImageBits.data[0][0].X);
- end;
Each colour is stored in the following
Code:
- struct ColorRGBExp32
- {
- byte r, g, b;
- signed char exponent;
- };
Zitat:
Standard RGB format can be obtained from this by multiplying each colour component by 2^(exponent).
Code:
Im assuming the Power function acts like ^ in maths.
Currently im only loading one out of a possible 4 "styles" (each face can have what i guess to be 4 different lightmaps effecting it) but even if some have more styles, the colours im getting are a tad off for other styles to be the cause.
The offset seems to be correctly done
Zitat:
Each face gives a byte offset into the lighting lump in its lightofs member (if no lighting information is used for this face e.g. faces with skybox, nodraw and invisible textures, lightofs is -1.) There are (number of lightstyles)*(number of luxels) lightmap samples for each face, where each sample is a 4-byte ColorRGBExp32 structure