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;
}
// \brief Declare uniforms and set Shader replacement strings
private void InitializeShaderSystem()
{
#if false
if (RenderStack.Graphics.Configuration.useOpenRL)
{
InitializeOpenRL();
}
#endif
string fs_shadows = System.IO.File.ReadAllText("res/OpenGL3/_fs_shadows.txt");
string instancing = System.IO.File.ReadAllText("res/OpenGL3/_instancing.txt");
string utils = System.IO.File.ReadAllText("res/OpenGL3/_utils.txt");
ShaderGL3.Replace("FS_SHADOWS;", fs_shadows);
ShaderGL3.Replace("INSTANCING;", instancing);
ShaderGL3.Replace("UTILS;", utils);
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);
System.Text.StringBuilder uniforms = new System.Text.StringBuilder();
uniforms.Append(CameraUniformBlock.UniformBlockGL.SourceGL);
uniforms.Append(LightsUniforms.UniformBlockGL.SourceGL);
modelsUB = new UniformBlockGL("models");
modelsUB.AddMat4("model_to_world_matrix", Configuration.instanceCount);
if (RenderStack.Graphics.Configuration.useIntegerPolygonIDs)
{
modelsUB.AddUInt("id_offset_uint", Configuration.instanceCount);
ShaderGL3.Replace("#if USE_INTEGER_POLYGON_ID", "#if 1");
}
else
{
modelsUB.AddVec4("id_offset_vec3", Configuration.instanceCount);
ShaderGL3.Replace("#if USE_INTEGER_POLYGON_ID", "#if 0");
}
modelsUB.Seal();
uniforms.Append(modelsUB.SourceGL);
globalUB = new UniformBlockGL("global");
globalUB.AddVec4("add_color");
globalUB.AddFloat("alpha");
globalUB.Seal();
uniforms.Append(globalUB.SourceGL);
LightsUniforms.UniformBufferGL.Use();
ShaderGL3.Replace("MAX_LIGHT_COUNT", Configuration.maxLightCount.ToString());
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.Sync();
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();
models.Use();
global.Use();
// GL_NEAREST - no filtering, no mipmaps
// GL_LINEAR - filtering, no mipmaps
// GL_NEAREST_MIPMAP_NEAREST - no filtering, sharp switching between mipmaps
// GL_NEAREST_MIPMAP_LINEAR - no filtering, smooth transition between mipmaps
// GL_LINEAR_MIPMAP_NEAREST - filtering, sharp switching between mipmaps
// GL_LINEAR_MIPMAP_LINEAR - filtering, smooth transition between mipmaps
//
// GL_LINEAR - bilinear
// GL_LINEAR_MIPMAP_NEAREST - bilinear with mipmaps
// GL_LINEAR_MIPMAP_LINEAR - trilinear
// No filtering, no mipmaps
var nearest = SamplerFactory.Create();
nearest.MinFilter = TextureMinFilter.Nearest;
nearest.MagFilter = TextureMagFilter.Nearest;
nearest.Wrap = TextureWrapMode.ClampToEdge;
nearest.CompareMode = TextureCompareMode.None;
var linear = SamplerFactory.Create();
linear.MinFilter = TextureMinFilter.Linear;
linear.MagFilter = TextureMagFilter.Linear;
linear.Wrap = TextureWrapMode.ClampToEdge;
linear.CompareMode = TextureCompareMode.None;
var bilinear = SamplerFactory.Create();
bilinear.MinFilter = TextureMinFilter.LinearMipmapNearest;
bilinear.MagFilter = TextureMagFilter.Linear;
bilinear.Wrap = TextureWrapMode.ClampToEdge;
bilinear.CompareMode = TextureCompareMode.None;
var trilinear = SamplerFactory.Create();
trilinear.MinFilter = TextureMinFilter.LinearMipmapLinear;
trilinear.MagFilter = TextureMagFilter.Linear;
trilinear.Wrap = TextureWrapMode.ClampToEdge;
trilinear.CompareMode = TextureCompareMode.None;
var pcfShadow = SamplerFactory.Create();
pcfShadow.MinFilter = TextureMinFilter.Linear;
pcfShadow.MagFilter = TextureMagFilter.Linear;
pcfShadow.Wrap = TextureWrapMode.ClampToEdge;
pcfShadow.CompareMode = TextureCompareMode.CompareRefToTexture;
if (Configuration.hardwareShadowPCF)
{
ShaderGL3.Replace("#if HARDWARE_PCF", "#if 1");
Samplers.Global.AddSampler2DArrayShadow("t_shadowmap", pcfShadow).TextureUnitIndex = 2;
}
else
{
ShaderGL3.Replace("#if HARDWARE_PCF", "#if 0");
Samplers.Global.AddSampler2DArray("t_shadowmap", linear).TextureUnitIndex = 2;
}
Samplers.Global.AddSampler2D("t_font", nearest).TextureUnitIndex = 1;
Samplers.Global.AddSampler2D("t_ninepatch", linear).TextureUnitIndex = 2;
Samplers.Global.AddSampler2D("t_cube", trilinear);
Samplers.Global.AddSampler2D("t_left", nearest);
Samplers.Global.AddSampler2D("t_right", nearest).TextureUnitIndex = 1;
Samplers.Global.AddSampler2D("t_surface_color", trilinear);
Samplers.Global.AddSampler2D("t_particle", trilinear);
Samplers.Global.AddSampler2DArray("t_shadowmap_vis", linear);
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.AddVec4("main_camera_near_far");
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();
uniforms.Append(MaterialUB.SourceGL);
uniforms.Append(Samplers.Global.ToString());
// Have these last
ShaderGL3.Replace("UNIFORMS;", uniforms.ToString());
ShaderGL3.Replace("INSTANCE_COUNT", "50");
}