/// <summary>
/// Compute a texture mipmap size.
/// </summary>
/// <param name="lod">
/// A <see cref="UInt32"/> that specify the mipmap level.
/// </param>
/// <returns>
/// It returns a <see cref="Vertex3ui"/> that contains the mipmap width, height and depth.
/// </returns>
protected Vertex3ui GetMipmapSize(uint lod)
{
Vertex3ui mipmapSize = BaseSize / (uint)Math.Pow(2.0, lod);
mipmapSize.x = Math.Max(1, mipmapSize.x);
mipmapSize.y = Math.Max(1, mipmapSize.y);
mipmapSize.z = Math.Max(1, mipmapSize.z);
return(mipmapSize);
}
public void TestUniform3ui()
{
if (!HasVersion(3, 0) && !HasEsVersion(3, 0) && !IsGlExtensionSupported("GL_EXT_gpu_shader4"))
{
Assert.Inconclusive("required features not implemented");
}
using (Device device = new Device())
using (new GLContext(device))
{
uint program = CreateProgramUniform3ui();
try {
Vertex3ui uniformStruct;
uint[] uniformValue;
int uniformLoc = Gl.GetUniformLocation(program, "uVec");
if (uniformLoc < 0)
{
throw new InvalidOperationException("no uniform variable");
}
// glGetUniformuiv
uniformValue = Array3(1u);
Gl.GetUniform(program, uniformLoc, uniformValue);
CollectionAssert.AreEqual(Array3(0u), uniformValue);
// glGetUniformuiv (ref)
uniformStruct = new Vertex3ui(1u);
Gl.GetUniformui(program, uniformLoc, ref uniformStruct);
Assert.AreEqual(Vertex3ui.Zero, uniformStruct);
// glUniform3ui
uniformValue = Array3(0u);
Gl.Uniform3(uniformLoc, Array3(1u));
Gl.GetUniform(program, uniformLoc, uniformValue);
CollectionAssert.AreEqual(Array3(1u), uniformValue);
// glUniform3uiv
uniformValue = Array3(0u);
Gl.Uniform3(uniformLoc, Array3(9u));
Gl.GetUniform(program, uniformLoc, uniformValue);
CollectionAssert.AreEqual(Array3(9u), uniformValue);
// glUniform3uiv (ref)
uniformValue = Array3(0u);
uniformStruct = new Vertex3ui(5u);
Gl.Uniform3ui(uniformLoc, 1, ref uniformStruct);
Gl.GetUniform(program, uniformLoc, uniformValue);
CollectionAssert.AreEqual(Array3(5u), uniformValue);
} finally {
Gl.DeleteProgram(program);
}
}
}
public void ColorBGR96_CastToVertex4()
{
uint r = (uint)NextComponent(uint.MaxValue);
uint g = (uint)NextComponent(uint.MaxValue);
uint b = (uint)NextComponent(uint.MaxValue);
ColorBGR96 v = new ColorBGR96(r, g, b);
Vertex3ui vArray = v;
Assert.AreEqual(b, vArray.x);
Assert.AreEqual(g, vArray.y);
Assert.AreEqual(r, vArray.z);
}
/// <summary>
/// Generate mipmaps for this Texture, replacing mipmaps level from 1 to <see cref="MipmapLevels"/> - 1.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for mipmapping definition.
/// </param>
/// <param name="target">
/// A <see cref="TextureTarget"/> indicating the target for generating
/// bitmaps.
/// </param>
protected void GenerateMipmaps(GraphicsContext ctx, TextureTarget target)
{
CheckCurrentContext(ctx);
// Bind this Texture
ctx.Bind(this);
// Ensure base/max level are updated
SetMipmapLevelRange(ctx);
// Generate mipmaps
Gl.GenerateMipmap(target);
for (uint i = BaseLevel + 1; i < Math.Min(MipmapLevels, MaxLevel); i++)
{
Vertex3ui mipmapSize = GetMipmapSize(i);
SetMipmap(_Mipmaps[BaseLevel].InternalFormat, mipmapSize.x, mipmapSize.y, mipmapSize.z, i);
}
}
/// <summary>
/// Generate mipmaps for this Texture, replacing mipmaps level from 1 to <see cref="MipmapLevels"/> - 1.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for mipmapping definition.
/// </param>
/// <param name="target">
/// A <see cref="TextureTarget"/> indicating the target for generating
/// bitmaps.
/// </param>
protected void GenerateMipmaps(GraphicsContext ctx, TextureTarget target)
{
CheckCurrentContext(ctx);
if (ctx.Version >= Gl.Version_300)
{
// Bind this Texture
ctx.Bind(this);
// Generate mipmaps
Gl.GenerateMipmap(target);
}
for (uint i = MipmapMinLevel + 1; i < MipmapLevels; i++)
{
Vertex3ui mipmapSize = GetMipmapSize(i);
SetMipmap(_Mipmaps[MipmapMinLevel].InternalFormat, mipmapSize.x, mipmapSize.y, mipmapSize.z, i);
}
}
void IShaderUniformContainer.SetUniform(GraphicsContext ctx, string uniformName, Vertex3ui v)
{
throw new NotImplementedException();
}