/// <summary>
/// Initializes a new instance of the OpenGLRenderTarget2D class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="width">The render target's width in pixels.</param>
/// <param name="height">The render target's height in pixels.</param>
/// <param name="usage">A <see cref="RenderTargetUsage"/> value specifying whether the
/// render target's data is discarded or preserved when it is bound to the graphics device.</param>
/// <param name="buffers">The collection of render buffers to attach to the target.</param>
public OpenGLRenderTarget2D(UltravioletContext uv, Int32 width, Int32 height, RenderTargetUsage usage, IEnumerable <RenderBuffer2D> buffers = null)
: base(uv)
{
Contract.EnsureRange(width > 0, nameof(width));
Contract.EnsureRange(height > 0, nameof(height));
var framebuffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateFramebuffer(out framebuffer))
{
if (buffers != null)
{
foreach (OpenGLRenderBuffer2D buffer in buffers)
{
AttachRenderBuffer(buffer);
}
}
}
}).Wait();
this.width = width;
this.height = height;
this.framebuffer = framebuffer;
this.renderTargetUsage = usage;
}
/// <summary>
/// Initializes a new instance of the <see cref="OpenGLSamplerObject"/> class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
public OpenGLSamplerObject(UltravioletContext uv)
: base(uv)
{
var sampler = 0u;
uv.QueueWorkItem(state =>
{
sampler = gl.GenSampler();
gl.ThrowIfError();
}).Wait();
this.sampler = sampler;
}
/// <summary>
/// Initializes a new instance of the OpenGLGeometryStream class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
public OpenGLGeometryStream(UltravioletContext uv)
: base(uv)
{
var vao = 0u;
if (gl.IsVertexArrayObjectAvailable)
{
uv.QueueWorkItem(state =>
{
vao = gl.GenVertexArray();
gl.ThrowIfError();
}).Wait();
}
this.vao = vao;
}
/// <summary>
/// Initializes a new instance of the OpenGLIndexBuffer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="itype">The index element type.</param>
/// <param name="icount">The index element count.</param>
/// <param name="usage">The buffer's usage type.</param>
public OpenGLIndexBuffer(UltravioletContext uv, IndexBufferElementType itype, Int32 icount, UInt32 usage)
: base(uv, itype, icount)
{
Contract.EnsureRange(icount >= 0, nameof(icount));
this.usage = usage;
this.size = new IntPtr(GetElementSize() * icount);
var buffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateElementArrayBuffer(out buffer))
{
gl.NamedBufferData(buffer, gl.GL_ELEMENT_ARRAY_BUFFER, size, null, usage);
gl.ThrowIfError();
}
}).Wait();
this.buffer = buffer;
}
/// <summary>
/// Initializes a new instance of the OpenGLVertexBuffer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vdecl">The vertex declaration for this buffer.</param>
/// <param name="vcount">The number of vertices in the buffer.</param>
/// <param name="usage">The buffer's usage type.</param>
public OpenGLVertexBuffer(UltravioletContext uv, VertexDeclaration vdecl, Int32 vcount, UInt32 usage)
: base(uv, vdecl, vcount)
{
Contract.Require(vdecl, nameof(vdecl));
this.vdecl = vdecl;
this.usage = usage;
this.size = new IntPtr(vdecl.VertexStride * vcount);
var buffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateArrayBuffer(out buffer))
{
gl.NamedBufferData(buffer, gl.GL_ARRAY_BUFFER, size, null, usage);
gl.ThrowIfError();
}
}).Wait();
this.buffer = buffer;
}
/// <summary>
/// Creates the underlying native OpenGL texture with the specified format and data.
/// </summary>
private void CreateNativeTexture(UltravioletContext uv, UInt32 internalformat, Int32 width, Int32 height, Int32 depth,
UInt32 format, UInt32 type, void *pixels, Boolean immutable)
{
if (uv.IsRunningInServiceMode)
{
throw new NotSupportedException(UltravioletStrings.NotSupportedInServiceMode);
}
this.width = width;
this.height = height;
this.depth = depth;
this.internalformat = internalformat;
this.format = format;
this.type = type;
this.immutable = immutable;
this.srgbEncoded =
internalformat == gl.GL_SRGB ||
internalformat == gl.GL_SRGB_ALPHA ||
internalformat == gl.GL_SRGB8 ||
internalformat == gl.GL_SRGB8_ALPHA8;
this.texture = uv.QueueWorkItem(state =>
{
uint glname;
using (OpenGLState.ScopedCreateTexture3D(out glname))
{
if (gl.IsTextureMaxLevelSupported)
{
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAX_LEVEL, 0);
gl.ThrowIfError();
}
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MIN_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_MAG_FILTER, (int)gl.GL_LINEAR);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_R, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_S, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
gl.TextureParameteri(glname, gl.GL_TEXTURE_3D, gl.GL_TEXTURE_WRAP_T, (int)gl.GL_CLAMP_TO_EDGE);
gl.ThrowIfError();
if (immutable)
{
if (gl.IsTextureStorageAvailable)
{
gl.TextureStorage3D(glname, gl.GL_TEXTURE_3D, 1, internalformat, width, height, depth);
gl.ThrowIfError();
if (pixels != null)
{
gl.TextureSubImage3D(glname, gl.GL_TEXTURE_3D, 0, 0, 0, 0, width, height, depth, format, type, pixels);
gl.ThrowIfError();
}
}
else
{
gl.TextureImage3D(glname, gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
}
if (!immutable)
{
using (OpenGLState.ScopedBindTexture3D(glname, true))
{
gl.TexImage3D(gl.GL_TEXTURE_3D, 0, (int)internalformat, width, height, depth, 0, format, type, pixels);
gl.ThrowIfError();
}
}
return(glname);
}).Result;
}
/// <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 concatenatedSourceMetadata = new ShaderSourceMetadata();
concatenatedSourceMetadata.Concat(vertexShader.ShaderSourceMetadata);
concatenatedSourceMetadata.Concat(fragmentShader.ShaderSourceMetadata);
var program = 0u;
uv.QueueWorkItem(state =>
{
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);
}
}).Wait();
this.program = program;
this.uniforms = CreateUniformCollection(concatenatedSourceMetadata);
}