private void CreateShaderMaterials(Quake3Level q3lvl, SceneManager sm)
{
// NB this only works for the 'default' shaders for now
// i.e. those that don't have a .shader script and thus default
// to just texture + lightmap
// TODO: pre-parse all .shader files and create lookup for next stage (use ROGL shader_file_t)
// Material names are shadername#lightmapnumber
// This is because I like to define materials up front completely
// rather than combine lightmap and shader dynamically (it's
// more generic). It results in more materials, but they're small
// beer anyway. Texture duplication is prevented by infrastructure.
// To do this I actually need to parse the faces since they have the
// shader/lightmap combo (lightmap number is not in the shader since
// it can be used with multiple lightmaps)
string shaderName;
int face = q3lvl.Faces.Length;
while(face-- > 0)
{
// Check to see if existing material
// Format shader#lightmap
int shadIdx = q3lvl.Faces[face].shader;
shaderName = String.Format("{0}#{1}", q3lvl.Shaders[shadIdx].name, q3lvl.Faces[face].lmTexture);
Material shadMat = sm.GetMaterial(shaderName);
if (shadMat == null && !bspOptions.useLightmaps)
{
// try the no-lightmap material
shaderName = String.Format("{0}#n", q3lvl.Shaders[shadIdx].name);
shadMat = sm.GetMaterial(shaderName);
}
if(shadMat == null)
{
// Colour layer
// NB no extension in Q3A(doh), have to try shader, .jpg, .tga
string tryName = q3lvl.Shaders[shadIdx].name;
// Try shader first
Quake3Shader shader = (Quake3Shader) Quake3ShaderManager.Instance.GetByName(tryName);
if(shader != null)
{
shadMat = shader.CreateAsMaterial(sm, q3lvl.Faces[face].lmTexture);
}
else
{
// No shader script, try default type texture
shadMat = sm.CreateMaterial(shaderName);
Pass shadPass = shadMat.GetTechnique(0).GetPass(0);
// Try jpg
TextureUnitState tex = shadPass.CreateTextureUnitState(tryName + ".jpg");
tex.Load();
if(tex.IsBlank)
{
// Try tga
tex.SetTextureName(tryName + ".tga");
}
// Set replace on all first layer textures for now
tex.SetColorOperation(LayerBlendOperation.Replace);
tex.TextureAddressing = TextureAddressing.Wrap;
// for ambient lighting
tex.ColorBlendMode.source2 = LayerBlendSource.Manual;
if(bspOptions.useLightmaps && q3lvl.Faces[face].lmTexture != -1)
{
// Add lightmap, additive blending
tex = shadPass.CreateTextureUnitState(String.Format("@lightmap{0}", q3lvl.Faces[face].lmTexture));
// Blend
tex.SetColorOperation(LayerBlendOperation.Modulate);
// Use 2nd texture co-ordinate set
tex.TextureCoordSet = 1;
// Clamp
tex.TextureAddressing = TextureAddressing.Clamp;
}
shadMat.CullingMode = CullingMode.None;
shadMat.Lighting = false;
}
}
shadMat.Load();
// Copy face data
BspStaticFaceGroup dest = CopyShaderFaceData(q3lvl, face, shadMat, shadIdx);
faceGroups[face] = dest;
}
}
/// <summary>
/// Creates this shader as an OGRE material.
/// </summary>
/// <remarks>
/// Creates a new material based on this shaders settings and registers it with the
/// SceneManager passed in.
/// Material name is in the format of: shader#lightmap.
/// </remarks>
/// <param name="sm">SceneManager to register the material with.</param>
/// <param name="lightmapNumber">Lightmap number</param>
public Material CreateAsMaterial(SceneManager sm, int lightmapNumber)
{
string materialName = String.Format("{0}#{1}", name, lightmapNumber);
Material material = sm.CreateMaterial(materialName);
LogManager.Instance.Write("Using Q3 shader {0}", name);
for(int p = 0; p < pass.Count; ++p)
{
TextureUnitState t;
// Create basic texture
t = LoadMaterialTextures(p, lightmapNumber, material);
// Blending
if(p == 0)
{
// scene blend
material.SetSceneBlending(pass[p].blendSrc, pass[p].blendDest);
if(material.IsTransparent && (pass[p].blendSrc != SceneBlendFactor.SourceAlpha))
material.DepthWrite = false;
t.SetColorOperation(LayerBlendOperation.Replace);
}
else
{
if(pass[p].customBlend)
{
// Fallback for now
t.SetColorOperation(LayerBlendOperation.Modulate);
}
else
{
t.SetColorOperation(pass[p].blend);
}
}
// Tex coords
if(pass[p].texGen == ShaderTextureGen.Base)
t.TextureCoordSet = 0;
else if(pass[p].texGen == ShaderTextureGen.Lightmap)
t.TextureCoordSet = 1;
else if(pass[p].texGen == ShaderTextureGen.Environment)
t.SetEnvironmentMap(true, EnvironmentMap.Planar);
// Tex mod
// Scale
t.SetTextureScaleU(pass[p].tcModScale[0]);
t.SetTextureScaleV(pass[p].tcModScale[1]);
CreateProceduralTextureMods(p, t);
// Address mode
t.TextureAddressing = pass[p].addressMode;
// Alpha mode
t.SetAlphaRejectSettings(pass[p].alphaFunc, pass[p].alphaVal);
}
// Do farbox (create new material)
// Do skydome (use this material)
if(skyDome)
{
float halfAngle = 0.5f * (0.5f * (4.0f * (float) Math.Atan(1.0f)));
float sin = (float) Math.Sin(halfAngle);
// Quake3 is always aligned with Z upwards
Quaternion q = new Quaternion(
(float) Math.Cos(halfAngle),
sin * Vector3.UnitX.x,
sin * Vector3.UnitY.y,
sin * Vector3.UnitX.z
);
// Also draw last, and make close to camera (far clip plane is shorter)
sm.SetSkyDome(true, materialName, 20 - (cloudHeight / 256 * 18), 12, 2000, false, q);
}
material.CullingMode = Axiom.Graphics.CullingMode.None;
material.ManualCullMode = cullMode;
material.Lighting = false;
material.Load();
return material;
}