/// <summary>
/// Initializes a new instance of the OpenGLShaderProgram class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vertexShader">The program's vertex shader.</param>
/// <param name="fragmentShader">The program's fragment shader.</param>
/// <param name="programOwnsShaders">A value indicating whether the program owns the shader objects.</param>
public OpenGLShaderProgram(UltravioletContext uv, OpenGLVertexShader vertexShader, OpenGLFragmentShader fragmentShader, Boolean programOwnsShaders)
: base(uv)
{
Contract.Require(vertexShader, nameof(vertexShader));
Contract.Require(fragmentShader, nameof(fragmentShader));
Ultraviolet.ValidateResource(vertexShader);
Ultraviolet.ValidateResource(fragmentShader);
this.vertexShader = vertexShader;
this.fragmentShader = fragmentShader;
this.programOwnsShaders = programOwnsShaders;
var program = 0u;
uv.QueueWorkItemAndWait(() =>
{
program = gl.CreateProgram();
gl.ThrowIfError();
gl.AttachShader(program, vertexShader.OpenGLName);
gl.ThrowIfError();
gl.AttachShader(program, fragmentShader.OpenGLName);
gl.ThrowIfError();
gl.LinkProgram(program);
gl.ThrowIfError();
var log = gl.GetProgramInfoLog(program);
gl.ThrowIfError();
var status = gl.GetProgrami(program, gl.GL_LINK_STATUS);
gl.ThrowIfError();
if (status == 0)
throw new InvalidOperationException(log);
});
this.program = program;
this.uniforms = CreateUniformCollection();
}
/// <summary>
/// Initializes a new instance of the OpenGLShaderProgram class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vertexShader">The program's vertex shader.</param>
/// <param name="fragmentShader">The program's fragment shader.</param>
/// <param name="programOwnsShaders">A value indicating whether the program owns the shader objects.</param>
public OpenGLShaderProgram(UltravioletContext uv, OpenGLVertexShader vertexShader, OpenGLFragmentShader fragmentShader, Boolean programOwnsShaders)
: base(uv)
{
Contract.Require(vertexShader, nameof(vertexShader));
Contract.Require(fragmentShader, nameof(fragmentShader));
Ultraviolet.ValidateResource(vertexShader);
Ultraviolet.ValidateResource(fragmentShader);
this.vertexShader = vertexShader;
this.fragmentShader = fragmentShader;
this.programOwnsShaders = programOwnsShaders;
var program = 0u;
uv.QueueWorkItemAndWait(() =>
{
program = gl.CreateProgram();
gl.ThrowIfError();
gl.AttachShader(program, vertexShader.OpenGLName);
gl.ThrowIfError();
gl.AttachShader(program, fragmentShader.OpenGLName);
gl.ThrowIfError();
gl.LinkProgram(program);
gl.ThrowIfError();
var log = gl.GetProgramInfoLog(program);
gl.ThrowIfError();
var status = gl.GetProgrami(program, gl.GL_LINK_STATUS);
gl.ThrowIfError();
var attributeCount = gl.GetProgrami(program, gl.GL_ACTIVE_ATTRIBUTES);
gl.ThrowIfError();
unsafe
{
var namebuf = Marshal.AllocHGlobal(256);
try
{
for (int i = 0; i < attributeCount; i++)
{
var attrNameLen = 0;
var attrName = default(String);
var attrSize = 0;
var attrType = 0u;
gl.GetActiveAttrib(program, (uint)i, 256, &attrNameLen, &attrSize, &attrType, (sbyte *)namebuf);
gl.ThrowIfError();
attrName = Marshal.PtrToStringAnsi(namebuf);
var location = gl.GetAttribLocation(program, attrName);
gl.ThrowIfError();
attributeLocations[attrName] = location;
attributeTypes[attrName] = attrType;
}
}
finally { Marshal.FreeHGlobal(namebuf); }
}
if (status == 0)
{
throw new InvalidOperationException(log);
}
});
this.program = program;
this.uniforms = CreateUniformCollection();
}
/// <summary>
/// Initializes a new instance of the OpenGLShaderProgram class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vertexShader">The program's vertex shader.</param>
/// <param name="fragmentShader">The program's fragment shader.</param>
/// <param name="programOwnsShaders">A value indicating whether the program owns the shader objects.</param>
public OpenGLShaderProgram(UltravioletContext uv, OpenGLVertexShader vertexShader, OpenGLFragmentShader fragmentShader, Boolean programOwnsShaders)
: base(uv)
{
Contract.Require(vertexShader, nameof(vertexShader));
Contract.Require(fragmentShader, nameof(fragmentShader));
Ultraviolet.ValidateResource(vertexShader);
Ultraviolet.ValidateResource(fragmentShader);
this.vertexShader = vertexShader;
this.fragmentShader = fragmentShader;
this.programOwnsShaders = programOwnsShaders;
var program = 0u;
uv.QueueWorkItemAndWait(() =>
{
program = gl.CreateProgram();
gl.ThrowIfError();
gl.AttachShader(program, vertexShader.OpenGLName);
gl.ThrowIfError();
gl.AttachShader(program, fragmentShader.OpenGLName);
gl.ThrowIfError();
gl.LinkProgram(program);
gl.ThrowIfError();
var log = gl.GetProgramInfoLog(program);
gl.ThrowIfError();
var status = gl.GetProgrami(program, gl.GL_LINK_STATUS);
gl.ThrowIfError();
if (status == 0)
{
throw new InvalidOperationException(log);
}
});
this.program = program;
this.uniforms = CreateUniformCollection();
}
