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98 lines
3.2 KiB
Go
98 lines
3.2 KiB
Go
// SPDX-License-Identifier: MIT
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// Copyright (c) 2010 Khronos Group.
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// This material may be distributed subject to the terms and conditions
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// set forth in the Open Publication License, v 1.0, 8 June 1999.
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// http://opencontent.org/openpub/.
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//
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// Copyright (c) 1991-2006 Silicon Graphics, Inc.
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// This document is licensed under the SGI Free Software B License.
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// For details, see http://oss.sgi.com/projects/FreeB.
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//go:build !js
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// +build !js
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// Package gl implements Go bindings to OpenGL.
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package gl
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const (
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ZERO = 0
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ONE = 1
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SRC_ALPHA = 0x0302
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DST_ALPHA = 0x0304
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ONE_MINUS_SRC_ALPHA = 0x0303
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ONE_MINUS_DST_ALPHA = 0x0305
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DST_COLOR = 0x0306
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ALWAYS = 0x0207
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ARRAY_BUFFER = 0x8892
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BLEND = 0x0BE2
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CLAMP_TO_EDGE = 0x812F
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COLOR_ATTACHMENT0 = 0x8CE0
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COMPILE_STATUS = 0x8B81
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DEPTH24_STENCIL8 = 0x88F0
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DYNAMIC_DRAW = 0x88E8
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ELEMENT_ARRAY_BUFFER = 0x8893
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FALSE = 0
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FLOAT = 0x1406
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FRAGMENT_SHADER = 0x8B30
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FRAMEBUFFER = 0x8D40
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FRAMEBUFFER_BINDING = 0x8CA6
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FRAMEBUFFER_COMPLETE = 0x8CD5
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INFO_LOG_LENGTH = 0x8B84
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INVERT = 0x150A
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KEEP = 0x1E00
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LINK_STATUS = 0x8B82
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MAX_TEXTURE_SIZE = 0x0D33
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NEAREST = 0x2600
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NO_ERROR = 0
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NOTEQUAL = 0x0205
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PIXEL_PACK_BUFFER = 0x88EB
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PIXEL_UNPACK_BUFFER = 0x88EC
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READ_WRITE = 0x88BA
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RENDERBUFFER = 0x8D41
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RGBA = 0x1908
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SHORT = 0x1402
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STENCIL_ATTACHMENT = 0x8D20
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STENCIL_BUFFER_BIT = 0x0400
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STENCIL_TEST = 0x0B90
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STREAM_DRAW = 0x88E0
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TEXTURE0 = 0x84C0
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TEXTURE_2D = 0x0DE1
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TEXTURE_MAG_FILTER = 0x2800
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TEXTURE_MIN_FILTER = 0x2801
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TEXTURE_WRAP_S = 0x2802
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TEXTURE_WRAP_T = 0x2803
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TRIANGLES = 0x0004
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TRUE = 1
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SCISSOR_TEST = 0x0C11
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UNPACK_ALIGNMENT = 0x0CF5
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UNSIGNED_BYTE = 0x1401
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UNSIGNED_SHORT = 0x1403
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VERTEX_SHADER = 0x8B31
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WRITE_ONLY = 0x88B9
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)
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// Init initializes the OpenGL bindings by loading the function pointers (for
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// each OpenGL function) from the active OpenGL context.
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//
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// It must be called under the presence of an active OpenGL context, e.g.,
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// always after calling window.MakeContextCurrent() and always before calling
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// any OpenGL functions exported by this package.
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//
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// On Windows, Init loads pointers that are context-specific (and hence you
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// must re-init if switching between OpenGL contexts, although not calling Init
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// again after switching between OpenGL contexts may work if the contexts belong
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// to the same graphics driver/device).
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//
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// On macOS and the other POSIX systems, the behavior is different, but code
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// written compatible with the Windows behavior is compatible with macOS and the
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// other POSIX systems. That is, always Init under an active OpenGL context, and
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// always re-init after switching graphics contexts.
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//
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// For information about caveats of Init, you should read the "Platform Specific
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// Function Retrieval" section of https://www.opengl.org/wiki/Load_OpenGL_Functions.
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func Init() error {
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return InitWithProcAddrFunc(getProcAddress)
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}
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