public Material(
string name,
IProgram program,
IUniformBlock uniformBlock
)
{
this.name = name;
Program = program;
uniformBuffer = UniformBufferFactory.Create(uniformBlock);
uniformBuffer.Sync();
}
private int modelCount; // How many models in scene
protected override void OnLoad(System.EventArgs e)
{
// Check GL features
RenderStack.Graphics.Configuration.Initialize();
if (RenderStack.Graphics.Configuration.glslVersion < 150)
{
throw new System.PlatformNotSupportedException("You need at least GL 3.2");
}
AttributeMappings.Global.Add(0, "_position", VertexUsage.Position, 0, 3);
AttributeMappings.Global.Add(1, "_normal", VertexUsage.Normal, 0, 3);
// Build uniform blocks
{
System.Text.StringBuilder uniforms = new System.Text.StringBuilder();
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");
uniforms.Append(CameraUniformBlock.UniformBlockGL.SourceGL);
ModelsUB = new UniformBlockGL("models");
ModelsUB.AddMat4("model_to_world_matrix", maxInstanceCount);
ModelsUB.Seal();
uniforms.Append(ModelsUB.SourceGL);
GlobalUB = new UniformBlockGL("global");
GlobalUB.AddVec4("add_color");
GlobalUB.AddFloat("alpha");
GlobalUB.Seal();
uniforms.Append(GlobalUB.SourceGL);
MaterialUB = new UniformBlockGL("material");
MaterialUB.AddVec4("surface_diffuse_reflectance_color");
MaterialUB.AddVec4("surface_specular_reflectance_color");
MaterialUB.AddFloat("surface_roughness");
MaterialUB.Seal();
uniforms.Append(MaterialUB.SourceGL);
LightsUB = new UniformBlockGL("lights");
LightsUB.AddVec4("exposure");
LightsUB.AddVec4("color", lightCount);
LightsUB.AddVec4("ambient_light_color");
LightsUB.AddVec4("direction", lightCount);
LightsUB.AddMat4("world_to_shadow_matrix", lightCount);
LightsUB.Seal();
uniforms.Append(LightsUB.SourceGL);
ShaderGL3.Replace("UNIFORMS;", uniforms.ToString());
}
// Models
List <Vector2> positions = UniformPoissonDiskSampler.SampleCircle(Vector2.Zero, poissonRadius, poissonMinDistance);
modelCount = positions.Count;
System.Diagnostics.Debug.WriteLine("Model count: " + modelCount);
modelFrame = new Frame[modelCount];
for (int i = 0; i < modelCount; ++i)
{
modelFrame[i] = new Frame();
modelFrame[i].LocalToParent.Set(
Matrix4.CreateTranslation(positions[i].X, positions[i].Y, -40.0f)
);
}
// Setup geometry and mesh
Geometry geometry = new Sphere(radius, 20, 8);
//Matrix4 translate = Matrix4.CreateTranslation(0.0f, 0.0f, -4.0f);
//geometry.Transform(translate);
mesh = new GeometryMesh(geometry, NormalStyle.PointNormals).GetMesh;
// \todo Get rid of this
//mesh.VertexBufferRange.Buffer.VertexFormat.Seal(AttributeMappings.Global);
// This is where we collect models transformations
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();
// Setup lights
lights = UniformBufferFactory.Create(LightsUB);
lights.Floats("exposure").Set(1.0f);
lights.Floats("ambient_light_color").Set(1.0f, 1.0f, 1.0f);
for (int i = 0; i < lightCount; ++i)
{
lights.Floats("direction").SetI(i, 0.0f, 1.0f, 0.0f);
lights.Floats("color").SetI(i, 1.0f, 1.0f, 1.0f, 1.0f / (float)lightCount);
}
lights.Sync();
global.Use();
models.Use();
lights.Use();
// Setup viewport and camera
viewport = new Viewport(base.Width, base.Height);
camera = new Camera();
camera.Projection.Near = 0.1f;
camera.Projection.Far = 300.0f;
camera.Frame.LocalToParent.Set(
Matrix4.CreateLookAt(
new Vector3(0.0f, 0.0f, 4.0f), // camera location
new Vector3(0.0f, 0.0f, 0.0f), // aim point
new Vector3(0.0f, 1.0f, 0.0f) // up vector
)
);
camera.Projection.FovYRadians = RenderStack.Math.Conversions.DegreesToRadians(60.0f);
camera.Projection.ProjectionType = ProjectionType.PerspectiveVertical;
camera.UniformBufferGL.Use();
// Setup shader program
program = (IProgram) new ProgramGL3(vs, fs);
// Setup material
for (int i = 0; i < Materials.Length; ++i)
{
var material = UniformBufferFactory.Create(MaterialUB);
float h = (float)(i) / (float)(Materials.Length - 1);
float r, g, b;
Conversions.HSVtoRGB(360.0f * h, 1.0f, 1.0f, out r, out g, out b);
float diffuse = 0.2f;
float specular = 0.8f;
float roughness = 0.1f;
material.Floats("surface_diffuse_reflectance_color").Set(diffuse * r, diffuse * g, diffuse * b);
material.Floats("surface_specular_reflectance_color").Set(specular * r, specular * r, specular * r);
material.Floats("surface_roughness").Set(roughness);
material.Sync();
Materials[i] = material;
}
// Update scene. There is no animation in this scene
// so we only need to do it once.
camera.Frame.UpdateHierarchical(serial);
foreach (var frame in modelFrame)
{
frame.UpdateHierarchical(serial);
}
// Setup initial GL state
{
// Since we only use one program, we don't need to touch this after.
camera.UpdateFrame();
camera.UpdateViewport(viewport);
camera.UniformBufferGL.Sync();
// Bind program
program.Use(0);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
float gammaHalf = (float)Math.Pow(0.5, 1.0 / 2.2);
GL.ClearColor(gammaHalf, gammaHalf, gammaHalf, 1.0f);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
SwapBuffers();
Visible = true;
// Since we only use one mesh, we don't need to change this after
SetupAttributeBindings();
// The mesh has not yet been uploaded to GL, do it now
IBufferRange vertexBufferRange = mesh.VertexBufferRange;
IBufferRange indexBufferRange = mesh.IndexBufferRange(MeshMode.PolygonFill);
if (vertexBufferRange.NeedsUploadGL)
{
vertexBufferRange.UpdateGL();
}
if (indexBufferRange.NeedsUploadGL)
{
indexBufferRange.UpdateGL();
}
}
Resize += new EventHandler <EventArgs>(Application_Resize);
Unload += new EventHandler <EventArgs>(Application_Unload);
}
// \brief Declare uniforms and set Shader replacement strings
private void InitializeShaderSystem()
{
CameraUniformBlock.NearFar = "near_far";
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.UniformBlockRL.SourceRL);
uniforms.Append(LightsUniforms.UniformBlockRL.SourceGL);
modelsUB = new UniformBlockRL("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.ToString());
globalUB = new UniformBlockRL("global");
globalUB.AddVec4("add_color");
globalUB.AddFloat("alpha");
globalUB.Seal();
uniforms.Append(globalUB.ToString());
uniforms.Append(LightsUniforms.UniformBlockRL.SourceRL);
LightsUniforms.UniformBufferRL.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.UniformBufferRL.Sync();
models.Use();
global.Use();
var nearestClampToEdge = new SamplerRL();
nearestClampToEdge.MinFilter = OpenTK.Graphics.OpenGL.TextureMinFilter.Nearest;
nearestClampToEdge.MagFilter = OpenTK.Graphics.OpenGL.TextureMagFilter.Nearest;
nearestClampToEdge.Wrap = OpenTK.Graphics.OpenGL.TextureWrapMode.ClampToEdge;
nearestClampToEdge.CompareMode = OpenTK.Graphics.OpenGL.TextureCompareMode.None;
var bilinearClampToEdge = new SamplerRL();
bilinearClampToEdge.MinFilter = OpenTK.Graphics.OpenGL.TextureMinFilter.NearestMipmapLinear;
bilinearClampToEdge.MagFilter = OpenTK.Graphics.OpenGL.TextureMagFilter.Linear;
bilinearClampToEdge.Wrap = OpenTK.Graphics.OpenGL.TextureWrapMode.ClampToEdge;
bilinearClampToEdge.CompareMode = OpenTK.Graphics.OpenGL.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 UniformBlockRL("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();
uniforms.Append(MaterialUB.ToString());
uniforms.Append(Samplers.Global.ToString());
// Have these last
ShaderGL3.Replace("UNIFORMS;", uniforms.ToString());
ShaderGL3.Replace("INSTANCE_COUNT", "50");
}
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");
}