private void InitializeTextureUnits()
{
// Bind a dummy texture to all texture units
byte[] whiteData = new byte[4];
whiteData[0] = 255;
whiteData[1] = 255;
whiteData[2] = 255;
whiteData[3] = 255;
dummyTexture = new TextureGL(1, 1, PixelFormat.Rgba, PixelInternalFormat.Rgba);
dummyTexture.Upload(whiteData, 0);
nearestSampler = new SamplerGL1();
nearestSampler.MinFilter = TextureMinFilter.Nearest;
nearestSampler.MagFilter = TextureMagFilter.Nearest;
nearestSampler.Wrap = TextureWrapMode.ClampToEdge;
int textureUnits = 4;
try
{
GL.GetInteger(GetPName.MaxTextureUnits, out textureUnits);
}
catch (Exception)
{
}
for (int i = 0; i < textureUnits; ++i)
{
try
{
GL.ActiveTexture(TextureUnit.Texture0 + i);
dummyTexture.Apply();
nearestSampler.Apply(i, TextureTarget.Texture2D);
}
catch (Exception)
{
}
}
float[] zeros = { 0.0f, 0.0f, 0.0f, 0.0f };
for (int i = 0; i < 8; ++i)
{
GL.Light(LightName.Light0 + i, LightParameter.Ambient, zeros);
}
}
private void InitializeShaderSystem()
{
//InitializeOpenRL();
//GL.Enable(EnableCap.Normalize);
var dualTexture = AttributeMappings.Pool["dualtexture"] = new AttributeMappings();
dualTexture.Add(0, "_position", VertexUsage.Position, 0, 3);
dualTexture.Add(1, "_texcoord", VertexUsage.TexCoord, 0, VertexUsage.TexCoord, 0, 2);
dualTexture.Add(2, "_texcoord", VertexUsage.TexCoord, 0, VertexUsage.TexCoord, 1, 2);
dualTexture.Add(3, "_color", VertexUsage.Color, 0, 4);
var idToColor = AttributeMappings.Pool["idToColor"] = new AttributeMappings();
idToColor.Add(0, "_position", VertexUsage.Position, 0, 3);
idToColor.Add(1, "_id_vec3", VertexUsage.Id, 0, VertexUsage.Color, 0, 3);
CameraUniformBlock.NearFar = "near_far";
CameraUniformBlock.FovXFovYAspect = "fovx_fovy_aspect";
CameraUniformBlock.ViewToClip = "view_to_clip_matrix";
CameraUniformBlock.ClipToView = "view_to_clip_matrix";
CameraUniformBlock.WorldToClip = "world_to_clip_matrix";
CameraUniformBlock.ClipToWorld = "clip_to_world_matrix";
CameraUniformBlock.WorldToView = "world_to_view_matrix";
CameraUniformBlock.ViewToWorld = "view_to_world_matrix";
CameraUniformBlock.Viewport = "viewport";
CameraUniformBlock.ViewPositionInWorld = "view_position_in_world";
CameraUniformBlock.Initialize("camera");
LightsUniforms.spec.Count = "count";
LightsUniforms.spec.Exposure = "exposure";
LightsUniforms.spec.Bias = "bias";
LightsUniforms.spec.AmbientLightColor = "ambient_light_color";
LightsUniforms.spec.WorldToLight = "world_to_light_matrix";
LightsUniforms.spec.WorldToShadow = "world_to_shadow_matrix";
LightsUniforms.spec.Direction = "direction";
LightsUniforms.spec.Color = "color";
LightsUniforms.Initialize("lights", Configuration.maxLightCount);
globalUB = new UniformBlockGL("global");
globalUB.AddVec4("add_color");
globalUB.AddFloat("alpha");
globalUB.Seal();
modelsUB = new UniformBlockGL("models");
modelsUB.AddMat4("model_to_world_matrix", Configuration.instanceCount);
modelsUB.AddVec4("id_offset_vec3", Configuration.instanceCount);
ShaderGL3.Replace("#if USE_INTEGER_POLYGON_ID", "#if 0");
modelsUB.Seal();
models = UniformBufferFactory.Create(modelsUB);
global = UniformBufferFactory.Create(globalUB);
global.Floats("alpha").Set(1.0f);
global.Floats("add_color").Set(0.0f, 0.0f, 0.4f);
global.SyncDelegate = ForceProgramUse;
models.SyncDelegate = ModelsDirty;
models.Use();
global.Use();
LightsUniforms.Exposure.Set(1.0f);
LightsUniforms.Bias.Set(-0.002f, 0.0f, 0.002f);
LightsUniforms.AmbientLightColor.Set(0.2f, 0.2f, 0.2f);
LightsUniforms.UniformBufferGL.Sync();
LightsUniforms.UniformBufferGL.Use();
var nearestClampToEdge = new SamplerGL1();
nearestClampToEdge.MinFilter = TextureMinFilter.Nearest;
nearestClampToEdge.MagFilter = TextureMagFilter.Nearest;
nearestClampToEdge.Wrap = TextureWrapMode.ClampToEdge;
nearestClampToEdge.CompareMode = TextureCompareMode.None;
var bilinearClampToEdge = new SamplerGL1();
bilinearClampToEdge.MinFilter = TextureMinFilter.NearestMipmapLinear;
bilinearClampToEdge.MagFilter = TextureMagFilter.Linear;
bilinearClampToEdge.Wrap = TextureWrapMode.ClampToEdge;
bilinearClampToEdge.CompareMode = TextureCompareMode.None;
Samplers.Global.AddSampler2D("t_font", nearestClampToEdge);
Samplers.Global.AddSampler2D("t_ninepatch", bilinearClampToEdge).TextureUnitIndex = 1;
Samplers.Global.AddSampler2D("t_cube", bilinearClampToEdge);
Samplers.Global.AddSampler2D("t_left", nearestClampToEdge);
Samplers.Global.AddSampler2D("t_right", nearestClampToEdge).TextureUnitIndex = 1;
Samplers.Global.AddSampler2D("t_surface_color", bilinearClampToEdge);
Samplers.Global.AddSampler2D("t_particle", bilinearClampToEdge);
Samplers.Global.AddSampler2DArray("t_shadowmap_vis", bilinearClampToEdge);
Samplers.Global.Seal();
materialUB = new UniformBlockGL("material");
materialUB.AddVec4("surface_diffuse_reflectance_color");
materialUB.AddVec4("surface_specular_reflectance_color");
materialUB.AddFloat("surface_specular_reflectance_exponent");
materialUB.AddVec2("surface_rim_parameters");
materialUB.AddVec4("grid_size");
materialUB.AddFloat("surface_roughness");
materialUB.AddFloat("surface_isotropy");
materialUB.AddFloat("contrast").Default = new Floats(1.0f);
materialUB.AddFloat("deghost").Default = new Floats(0.0f);
materialUB.AddFloat("saturation").Default = new Floats(1.0f);
materialUB.AddFloat("t");
materialUB.AddFloat("slider_t");
materialUB.AddVec4("fill_color");
materialUB.AddVec4("point_color");
materialUB.AddFloat("point_z_offset");
materialUB.AddVec4("line_color");
materialUB.AddVec2("line_width").Default = new Floats(1.0f, 0.25f); // \todo check how to compute .y
materialUB.AddFloat("bias_units");
materialUB.AddFloat("bias_factor");
materialUB.AddFloat("octaves").Default = new Floats(4.0f);
materialUB.AddFloat("offset").Default = new Floats(0.0f);
materialUB.AddFloat("frequency").Default = new Floats(2.2f);
materialUB.AddFloat("amplitude").Default = new Floats(0.2f);
materialUB.AddFloat("lacunarity").Default = new Floats(3.3f);
materialUB.AddFloat("persistence").Default = new Floats(0.25f);
materialUB.Seal();
materialUB.ChangeDelegate = ForceProgramUse;
}