github.com/thommil/tge-gl@v0.0.0-20190313100017-83d8f10f8fae/types.go (about)

     1  // Copyright 2014 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package gl
     6  
     7  // Enum is equivalent to GLenum, and is normally used with one of the
     8  // constants defined in this package.
     9  type Enum uint32
    10  
    11  // Types are defined a structs so that in debug mode they can carry
    12  // extra information, such as a string name. See typesdebug.go.
    13  
    14  // Attrib identifies the location of a specific attribute variable.
    15  type Attrib int32
    16  
    17  // Program identifies a compiled shader program.
    18  type Program uint32
    19  
    20  // Shader identifies a GLSL shader.
    21  type Shader uint32
    22  
    23  // Buffer identifies a GL buffer object.
    24  type Buffer uint32
    25  
    26  // Framebuffer identifies a GL framebuffer.
    27  type Framebuffer uint32
    28  
    29  // A Renderbuffer is a GL object that holds an image in an internal format.
    30  type Renderbuffer uint32
    31  
    32  // A Texture identifies a GL texture unit.
    33  type Texture uint32
    34  
    35  // Uniform identifies the location of a specific uniform variable.
    36  type Uniform int32
    37  
    38  // A VertexArray is a GL object that holds vertices in an internal format.
    39  type VertexArray uint32
    40  
    41  // Valid indicates if attrib is valid in OpenGL context
    42  func (v Attrib) Valid() bool { return v >= 0 }
    43  
    44  // Valid indicates if program is valid in OpenGL context
    45  func (v Program) Valid() bool { return v > 0 }
    46  
    47  // Valid indicates if shader is valid in OpenGL context
    48  func (v Shader) Valid() bool { return v > 0 }
    49  
    50  // Valid indicates if buffer is valid in OpenGL context
    51  func (v Buffer) Valid() bool { return v > 0 }
    52  
    53  // Valid indicates if framebuffer is valid in OpenGL context
    54  func (v Framebuffer) Valid() bool { return v > 0 }
    55  
    56  // Valid indicates if renderbuffer is valid in OpenGL context
    57  func (v Renderbuffer) Valid() bool { return v > 0 }
    58  
    59  // Valid indicates if texture is valid in OpenGL context
    60  func (v Texture) Valid() bool { return v > 0 }
    61  
    62  // Valid indicates if uniform is valid in OpenGL context
    63  func (v Uniform) Valid() bool { return v >= 0 }
    64  
    65  // Valid indicates if VAO is valid in OpenGL context
    66  func (v VertexArray) Valid() bool { return v > 0 }