static string GetVertSource (MeshShaderSettings settings) {
var sb = new StringBuilder();
sb.Append("#version ").AppendLine(ShaderVersion);
AppendDefines(sb, settings);
AppendUniform(sb, settings);
AppendAttribute(sb, settings);
AppendVarying(sb, settings, true);
sb.AppendLine("void main() {");
sb.AppendLine(" vec4 p = Position;");
if (settings.BoneSlotCount > 0) {
sb.AppendLine(" p = (");
for (var i = 0; i < settings.BoneSlotCount; i++) {
sb.Append(" BoneWeight").Append(i).Append(" * Bones[int(BoneIndex").Append(i).Append(")]");
sb.AppendLine(i == settings.BoneSlotCount - 1 ? ") * p;" : " + ");
}
}
sb.AppendLine(" normal = normalize((NormalMatrix * Normal).xyz);");
sb.AppendLine(" v = (WorldView * p).xyz;");
for (var i = 0; i < 4; i++)
sb.Append(" texCoord").Append(i).Append(" = TexCoord").Append(i).AppendLine(";");
sb.AppendLine(" gl_Position = WorldViewProjection * p;");
sb.AppendLine("}");
Console.WriteLine(sb.ToString());
return sb.ToString();
}
static string GetFragSource (MeshShaderSettings settings) {
var sb = new StringBuilder();
sb.Append("#version ").AppendLine(ShaderVersion);
AppendDefines(sb, settings);
AppendUniform(sb, settings);
AppendVarying(sb, settings, false);
sb.AppendLine("void main() {");
sb.AppendLine(" vec3 n = normal;");
sb.AppendLine(" vec4 a = ColorAmbient;");
sb.AppendLine(" vec4 d = ColorDiffuse;");
sb.AppendLine(" vec4 s = ColorSpecular;");
sb.AppendLine(" vec4 e = ColorEmissive;");
sb.AppendLine(" vec4 tmp;");
if (settings.Diffuse != null) {
for (var i = 0; i < settings.Diffuse.Length; i++)
sb.AppendFormat(FragDiffuse, i);
}
if (settings.Normal != null) {
for (var i = 0; i < settings.Normal.Length; i++)
sb.AppendFormat(FragNormal, i);
}
if (settings.Specular != null) {
for (var i = 0; i < settings.Specular.Length; i++)
sb.AppendFormat(FragSpecular, i);
}
if (settings.Emissive != null) {
for (var i = 0; i < settings.Emissive.Length; i++)
sb.AppendFormat(FragEmissive, i);
}
sb.AppendLine(FragPhong);
sb.AppendLine("}");
return sb.ToString();
}
static string GetVertSource(MeshShaderSettings settings)
{
var sb = new StringBuilder();
sb.Append("#version ").AppendLine(ShaderVersion);
AppendDefines(sb, settings);
AppendUniform(sb, settings);
AppendAttribute(sb, settings);
AppendVarying(sb, settings, true);
sb.AppendLine("void main() {");
sb.AppendLine(" vec4 p = Position;");
if (settings.BoneSlotCount > 0)
{
sb.AppendLine(" p = (");
for (var i = 0; i < settings.BoneSlotCount; i++)
{
sb.Append(" BoneWeight").Append(i).Append(" * Bones[int(BoneIndex").Append(i).Append(")]");
sb.AppendLine(i == settings.BoneSlotCount - 1 ? ") * p;" : " + ");
}
}
sb.AppendLine(" normal = normalize((NormalMatrix * Normal).xyz);");
sb.AppendLine(" v = (WorldView * p).xyz;");
for (var i = 0; i < 4; i++)
{
sb.Append(" texCoord").Append(i).Append(" = TexCoord").Append(i).AppendLine(";");
}
sb.AppendLine(" gl_Position = WorldViewProjection * p;");
sb.AppendLine("}");
return(sb.ToString());
}
static void AppendVarying(StringBuilder sb, MeshShaderSettings settings, bool output)
{
sb.AppendLine("varying vec3 normal;");
sb.AppendLine("varying vec3 v;");
for (var i = 0; i < 4; i++)
{
sb.Append("varying").Append(" vec2 texCoord").Append(i).AppendLine(";");
}
}
static void AppendUniform(StringBuilder sb, MeshShaderSettings settings)
{
sb.AppendLine("uniform mat4 WorldViewProjection;");
sb.AppendLine("uniform mat4 WorldView;");
sb.AppendLine("uniform mat4 NormalMatrix;");
sb.AppendLine("uniform vec4 ColorAmbient;");
sb.AppendLine("uniform vec4 ColorDiffuse;");
sb.AppendLine("uniform vec4 ColorSpecular;");
sb.AppendLine("uniform vec4 ColorEmissive;");
sb.AppendLine("uniform float Shininess;");
sb.AppendLine("uniform float ShininessStrength;");
if (settings.Diffuse != null)
{
for (var i = 0; i < settings.Diffuse.Length; i++)
{
sb.Append("uniform sampler2D DiffuseMap").Append(i.ToString()).AppendLine(";");
}
}
if (settings.Normal != null)
{
for (var i = 0; i < settings.Normal.Length; i++)
{
sb.Append("uniform sampler2D NormalMap").Append(i.ToString()).AppendLine(";");
}
}
if (settings.Specular != null)
{
for (var i = 0; i < settings.Specular.Length; i++)
{
sb.Append("uniform sampler2D SpecularMap").Append(i.ToString()).AppendLine(";");
}
}
if (settings.Emissive != null)
{
for (var i = 0; i < settings.Emissive.Length; i++)
{
sb.Append("uniform sampler2D EmissiveMap").Append(i.ToString()).AppendLine(";");
}
}
if (settings.BoneCount > 0)
{
sb.Append("uniform mat4 Bones[").Append(settings.BoneCount).AppendLine("];");
}
sb.AppendLine("uniform int NumLights;");
if (settings.MaxLights > 0)
{
sb.AppendLine("uniform int LightType[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightVector[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightAmbient[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightDiffuse[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightSpecular[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightAttenuation[MAX_NUM_LIGHTS];");
}
}
static void AppendAttribute(StringBuilder sb, MeshShaderSettings settings)
{
sb.AppendLine("attribute vec4 Position;");
sb.AppendLine("attribute vec4 Normal;");
for (var i = 0; i < 4; i++)
{
sb.Append("attribute vec2 TexCoord").Append(i).AppendLine(";");
}
for (var i = 0; i < settings.BoneSlotCount; i++)
{
sb.Append("attribute float BoneWeight").Append(i).AppendLine(";");
sb.Append("attribute float BoneIndex").Append(i).AppendLine(";");
}
}
static string GetFragSource(MeshShaderSettings settings)
{
var sb = new StringBuilder();
sb.Append("#version ").AppendLine(ShaderVersion);
AppendDefines(sb, settings);
AppendUniform(sb, settings);
AppendVarying(sb, settings, false);
sb.AppendLine("void main() {");
sb.AppendLine(" vec3 n = normal;");
sb.AppendLine(" vec4 a = ColorAmbient;");
sb.AppendLine(" vec4 d = ColorDiffuse;");
sb.AppendLine(" vec4 s = ColorSpecular;");
sb.AppendLine(" vec4 e = ColorEmissive;");
sb.AppendLine(" vec4 tmp;");
if (settings.Diffuse != null)
{
for (var i = 0; i < settings.Diffuse.Length; i++)
{
sb.AppendFormat(FragDiffuse, i);
}
}
if (settings.Normal != null)
{
for (var i = 0; i < settings.Normal.Length; i++)
{
sb.AppendFormat(FragNormal, i);
}
}
if (settings.Specular != null)
{
for (var i = 0; i < settings.Specular.Length; i++)
{
sb.AppendFormat(FragSpecular, i);
}
}
if (settings.Emissive != null)
{
for (var i = 0; i < settings.Emissive.Length; i++)
{
sb.AppendFormat(FragEmissive, i);
}
}
sb.AppendLine(FragPhong);
sb.AppendLine("}");
return(sb.ToString());
}
static void AppendDefines(StringBuilder sb, MeshShaderSettings settings)
{
sb.Append("#define MAX_NUM_LIGHTS ").AppendLine(settings.MaxLights.ToString());
if (settings.Diffuse != null)
{
for (var i = 0; i < settings.Diffuse.Length; i++)
{
var item = settings.Diffuse[0];
sb.Append("#define DIFFUSE_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define DIFFUSE_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define DIFFUSE_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Normal != null)
{
for (var i = 0; i < settings.Normal.Length; i++)
{
var item = settings.Normal[0];
sb.Append("#define NORMAL_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define NORMAL_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define NORMAL_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Specular != null)
{
for (var i = 0; i < settings.Specular.Length; i++)
{
var item = settings.Specular[0];
sb.Append("#define SPECULAR_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define SPECULAR_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define SPECULAR_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Emissive != null)
{
for (var i = 0; i < settings.Specular.Length; i++)
{
var item = settings.Specular[0];
sb.Append("#define EMISSIVE_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define EMISSIVE_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define EMISSIVE_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
sb.AppendLine();
}
Material[] ReadMaterials(BinaryReader reader, Dictionary <string, Texture> textures)
{
var matCount = reader.ReadInt32();
var mats = new MeshMaterial[matCount];
for (var i = 0; i < matCount; i++)
{
var name = reader.ReadString();
var mat = new MeshMaterial(null, name);
mat.IsTwoSided = reader.ReadBoolean();
mat.IsWireframeEnabled = reader.ReadBoolean();
var shadingMode = (ShadingMode)reader.ReadInt32();
mat.BlendMode = (BlendMode)reader.ReadInt32();
mat.Opacity = reader.ReadSingle();
mat.Shininess = reader.ReadSingle();
mat.ShininessStrength = reader.ReadSingle();
mat.ColorAmbient = reader.ReadVector4();
mat.ColorDiffuse = reader.ReadVector4();
mat.ColorSpecular = reader.ReadVector4();
mat.ColorEmissive = reader.ReadVector4();
mat.ColorTransparent = reader.ReadVector4();
var boneCount = reader.ReadInt32();
var boneSlotCount = reader.ReadInt32();
mat.DiffuseMap = this.ReadTextureStack(reader, textures);
mat.NormalMap = this.ReadTextureStack(reader, textures);
mat.SpecularMap = this.ReadTextureStack(reader, textures);
mat.EmissiveMap = this.ReadTextureStack(reader, textures);
var settings = new MeshShaderSettings {
MaxLights = 4,
BoneCount = boneCount,
BoneSlotCount = boneSlotCount,
ShadingMode = shadingMode,
Diffuse = GetMeshTextureStack(mat.DiffuseMap),
Normal = GetMeshTextureStack(mat.NormalMap),
Specular = GetMeshTextureStack(mat.SpecularMap),
Emissive = GetMeshTextureStack(mat.EmissiveMap)
};
mat.Shader = new MeshShader(settings);
mats[i] = mat;
}
return(mats);
}
static void AppendDefines (StringBuilder sb, MeshShaderSettings settings) {
sb.Append("#define MAX_NUM_LIGHTS ").AppendLine(settings.MaxLights.ToString());
if (settings.Diffuse != null) {
for (var i = 0; i < settings.Diffuse.Length; i++) {
var item = settings.Diffuse[0];
sb.Append("#define DIFFUSE_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define DIFFUSE_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define DIFFUSE_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Normal != null) {
for (var i = 0; i < settings.Normal.Length; i++) {
var item = settings.Normal[0];
sb.Append("#define NORMAL_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define NORMAL_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define NORMAL_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Specular != null) {
for (var i = 0; i < settings.Specular.Length; i++) {
var item = settings.Specular[0];
sb.Append("#define SPECULAR_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define SPECULAR_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define SPECULAR_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
if (settings.Emissive != null) {
for (var i = 0; i < settings.Specular.Length; i++) {
var item = settings.Specular[0];
sb.Append("#define EMISSIVE_INDEX").Append(i.ToString()).Append(" texCoord").AppendLine(item.Index.ToString());
sb.Append("#define EMISSIVE_BLEND").Append(i.ToString()).Append(" ").AppendLine(item.BlendFactor.ToString());
sb.Append("#define EMISSIVE_OP").Append(i.ToString()).Append(" ").AppendLine(((int)item.Operation).ToString());
}
}
sb.AppendLine();
}
static void AppendVarying (StringBuilder sb, MeshShaderSettings settings, bool output) {
sb.AppendLine("varying vec3 normal;");
sb.AppendLine("varying vec3 v;");
for (var i = 0; i < 4; i++)
sb.Append("varying").Append(" vec2 texCoord").Append(i).AppendLine(";");
}
static void AppendAttribute (StringBuilder sb, MeshShaderSettings settings) {
sb.AppendLine("attribute vec4 Position;");
sb.AppendLine("attribute vec4 Normal;");
for (var i = 0; i < 4; i++)
sb.Append("attribute vec2 TexCoord").Append(i).AppendLine(";");
for (var i = 0; i < settings.BoneSlotCount; i++) {
sb.Append("attribute float BoneWeight").Append(i).AppendLine(";");
sb.Append("attribute float BoneIndex").Append(i).AppendLine(";");
}
}
static void AppendUniform (StringBuilder sb, MeshShaderSettings settings) {
sb.AppendLine("uniform mat4 WorldViewProjection;");
sb.AppendLine("uniform mat4 WorldView;");
sb.AppendLine("uniform mat4 NormalMatrix;");
sb.AppendLine("uniform vec4 ColorAmbient;");
sb.AppendLine("uniform vec4 ColorDiffuse;");
sb.AppendLine("uniform vec4 ColorSpecular;");
sb.AppendLine("uniform vec4 ColorEmissive;");
sb.AppendLine("uniform float Shininess;");
sb.AppendLine("uniform float ShininessStrength;");
if (settings.Diffuse != null) {
for (var i = 0; i < settings.Diffuse.Length; i++)
sb.Append("uniform sampler2D DiffuseMap").Append(i.ToString()).AppendLine(";");
}
if (settings.Normal != null) {
for (var i = 0; i < settings.Normal.Length; i++)
sb.Append("uniform sampler2D NormalMap").Append(i.ToString()).AppendLine(";");
}
if (settings.Specular != null) {
for (var i = 0; i < settings.Specular.Length; i++)
sb.Append("uniform sampler2D SpecularMap").Append(i.ToString()).AppendLine(";");
}
if (settings.Emissive != null) {
for (var i = 0; i < settings.Emissive.Length; i++)
sb.Append("uniform sampler2D EmissiveMap").Append(i.ToString()).AppendLine(";");
}
if (settings.BoneCount > 0)
sb.Append("uniform mat4 Bones[").Append(settings.BoneCount).AppendLine("];");
sb.AppendLine("uniform int NumLights;");
if (settings.MaxLights > 0) {
sb.AppendLine("uniform int LightType[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightVector[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightAmbient[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightDiffuse[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightSpecular[MAX_NUM_LIGHTS];");
sb.AppendLine("uniform vec3 LightAttenuation[MAX_NUM_LIGHTS];");
}
}
static string GetName(MeshShaderSettings settings)
{
return(typeof(MeshShader).FullName + "::" + settings.MaxLights);
}
public MeshShader(MeshShaderSettings settings)
: base(GetVertSource(settings), GetFragSource(settings), GetName(settings))
{
_maxNumLights = settings.MaxLights;
}
public MeshShader (MeshShaderSettings settings) : base(GetVertSource(settings), GetFragSource(settings)) {
_maxNumLights = settings.MaxLights;
}
Material[] ReadMaterials (BinaryReader reader, Dictionary<string, Texture> textures) {
var matCount = reader.ReadInt32();
var mats = new MeshMaterial[matCount];
for (var i = 0; i < matCount; i++) {
var name = reader.ReadString();
var mat = new MeshMaterial(null, name);
mat.IsTwoSided = reader.ReadBoolean();
mat.IsWireframeEnabled = reader.ReadBoolean();
var shadingMode = (ShadingMode)reader.ReadInt32();
mat.BlendMode = (BlendMode)reader.ReadInt32();
mat.Opacity = reader.ReadSingle();
mat.Shininess = reader.ReadSingle();
mat.ShininessStrength = reader.ReadSingle();
mat.ColorAmbient = reader.ReadVector4();
mat.ColorDiffuse = reader.ReadVector4();
mat.ColorSpecular = reader.ReadVector4();
mat.ColorEmissive = reader.ReadVector4();
mat.ColorTransparent = reader.ReadVector4();
var boneCount = reader.ReadInt32();
var boneSlotCount = reader.ReadInt32();
mat.DiffuseMap = this.ReadTextureStack(reader, textures);
mat.NormalMap = this.ReadTextureStack(reader, textures);
mat.SpecularMap = this.ReadTextureStack(reader, textures);
mat.EmissiveMap = this.ReadTextureStack(reader, textures);
var settings = new MeshShaderSettings {
MaxLights = 4,
BoneCount = boneCount,
BoneSlotCount = boneSlotCount,
ShadingMode = shadingMode,
Diffuse = GetMeshTextureStack(mat.DiffuseMap),
Normal = GetMeshTextureStack(mat.NormalMap),
Specular = GetMeshTextureStack(mat.SpecularMap),
Emissive = GetMeshTextureStack(mat.EmissiveMap)
};
mat.Shader = new MeshShader(settings);
mats[i] = mat;
}
return mats;
}
