402 строки
19 KiB
Go
402 строки
19 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package gl
|
|
|
|
//#cgo darwin LDFLAGS: -framework OpenGL
|
|
//#cgo linux LDFLAGS: -lGLESv2
|
|
//#include "gl2.h"
|
|
import "C"
|
|
import
|
|
|
|
/*
|
|
Partially generated from the Khronos OpenGL API specification in XML
|
|
format, which is covered by the license:
|
|
|
|
Copyright (c) 2013-2014 The Khronos Group Inc.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a
|
|
copy of this software and/or associated documentation files (the
|
|
"Materials"), to deal in the Materials without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Materials, and to
|
|
permit persons to whom the Materials are furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Materials.
|
|
|
|
THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
|
|
|
|
*/"fmt"
|
|
|
|
const (
|
|
POINTS = 0x0000
|
|
LINES = 0x0001
|
|
LINE_LOOP = 0x0002
|
|
LINE_STRIP = 0x0003
|
|
TRIANGLES = 0x0004
|
|
TRIANGLE_STRIP = 0x0005
|
|
TRIANGLE_FAN = 0x0006
|
|
SRC_COLOR = 0x0300
|
|
ONE_MINUS_SRC_COLOR = 0x0301
|
|
SRC_ALPHA = 0x0302
|
|
ONE_MINUS_SRC_ALPHA = 0x0303
|
|
DST_ALPHA = 0x0304
|
|
ONE_MINUS_DST_ALPHA = 0x0305
|
|
DST_COLOR = 0x0306
|
|
ONE_MINUS_DST_COLOR = 0x0307
|
|
SRC_ALPHA_SATURATE = 0x0308
|
|
FUNC_ADD = 0x8006
|
|
BLEND_EQUATION = 0x8009
|
|
BLEND_EQUATION_RGB = 0x8009
|
|
BLEND_EQUATION_ALPHA = 0x883D
|
|
FUNC_SUBTRACT = 0x800A
|
|
FUNC_REVERSE_SUBTRACT = 0x800B
|
|
BLEND_DST_RGB = 0x80C8
|
|
BLEND_SRC_RGB = 0x80C9
|
|
BLEND_DST_ALPHA = 0x80CA
|
|
BLEND_SRC_ALPHA = 0x80CB
|
|
CONSTANT_COLOR = 0x8001
|
|
ONE_MINUS_CONSTANT_COLOR = 0x8002
|
|
CONSTANT_ALPHA = 0x8003
|
|
ONE_MINUS_CONSTANT_ALPHA = 0x8004
|
|
BLEND_COLOR = 0x8005
|
|
ARRAY_BUFFER = 0x8892
|
|
ELEMENT_ARRAY_BUFFER = 0x8893
|
|
ARRAY_BUFFER_BINDING = 0x8894
|
|
ELEMENT_ARRAY_BUFFER_BINDING = 0x8895
|
|
STREAM_DRAW = 0x88E0
|
|
STATIC_DRAW = 0x88E4
|
|
DYNAMIC_DRAW = 0x88E8
|
|
BUFFER_SIZE = 0x8764
|
|
BUFFER_USAGE = 0x8765
|
|
CURRENT_VERTEX_ATTRIB = 0x8626
|
|
FRONT = 0x0404
|
|
BACK = 0x0405
|
|
FRONT_AND_BACK = 0x0408
|
|
TEXTURE_2D = 0x0DE1
|
|
CULL_FACE = 0x0B44
|
|
BLEND = 0x0BE2
|
|
DITHER = 0x0BD0
|
|
STENCIL_TEST = 0x0B90
|
|
DEPTH_TEST = 0x0B71
|
|
SCISSOR_TEST = 0x0C11
|
|
POLYGON_OFFSET_FILL = 0x8037
|
|
SAMPLE_ALPHA_TO_COVERAGE = 0x809E
|
|
SAMPLE_COVERAGE = 0x80A0
|
|
INVALID_ENUM = 0x0500
|
|
INVALID_VALUE = 0x0501
|
|
INVALID_OPERATION = 0x0502
|
|
OUT_OF_MEMORY = 0x0505
|
|
CW = 0x0900
|
|
CCW = 0x0901
|
|
LINE_WIDTH = 0x0B21
|
|
ALIASED_POINT_SIZE_RANGE = 0x846D
|
|
ALIASED_LINE_WIDTH_RANGE = 0x846E
|
|
CULL_FACE_MODE = 0x0B45
|
|
FRONT_FACE = 0x0B46
|
|
DEPTH_RANGE = 0x0B70
|
|
DEPTH_WRITEMASK = 0x0B72
|
|
DEPTH_CLEAR_VALUE = 0x0B73
|
|
DEPTH_FUNC = 0x0B74
|
|
STENCIL_CLEAR_VALUE = 0x0B91
|
|
STENCIL_FUNC = 0x0B92
|
|
STENCIL_FAIL = 0x0B94
|
|
STENCIL_PASS_DEPTH_FAIL = 0x0B95
|
|
STENCIL_PASS_DEPTH_PASS = 0x0B96
|
|
STENCIL_REF = 0x0B97
|
|
STENCIL_VALUE_MASK = 0x0B93
|
|
STENCIL_WRITEMASK = 0x0B98
|
|
STENCIL_BACK_FUNC = 0x8800
|
|
STENCIL_BACK_FAIL = 0x8801
|
|
STENCIL_BACK_PASS_DEPTH_FAIL = 0x8802
|
|
STENCIL_BACK_PASS_DEPTH_PASS = 0x8803
|
|
STENCIL_BACK_REF = 0x8CA3
|
|
STENCIL_BACK_VALUE_MASK = 0x8CA4
|
|
STENCIL_BACK_WRITEMASK = 0x8CA5
|
|
VIEWPORT = 0x0BA2
|
|
SCISSOR_BOX = 0x0C10
|
|
COLOR_CLEAR_VALUE = 0x0C22
|
|
COLOR_WRITEMASK = 0x0C23
|
|
UNPACK_ALIGNMENT = 0x0CF5
|
|
PACK_ALIGNMENT = 0x0D05
|
|
MAX_TEXTURE_SIZE = 0x0D33
|
|
MAX_VIEWPORT_DIMS = 0x0D3A
|
|
SUBPIXEL_BITS = 0x0D50
|
|
RED_BITS = 0x0D52
|
|
GREEN_BITS = 0x0D53
|
|
BLUE_BITS = 0x0D54
|
|
ALPHA_BITS = 0x0D55
|
|
DEPTH_BITS = 0x0D56
|
|
STENCIL_BITS = 0x0D57
|
|
POLYGON_OFFSET_UNITS = 0x2A00
|
|
POLYGON_OFFSET_FACTOR = 0x8038
|
|
TEXTURE_BINDING_2D = 0x8069
|
|
SAMPLE_BUFFERS = 0x80A8
|
|
SAMPLES = 0x80A9
|
|
SAMPLE_COVERAGE_VALUE = 0x80AA
|
|
SAMPLE_COVERAGE_INVERT = 0x80AB
|
|
NUM_COMPRESSED_TEXTURE_FORMATS = 0x86A2
|
|
COMPRESSED_TEXTURE_FORMATS = 0x86A3
|
|
DONT_CARE = 0x1100
|
|
FASTEST = 0x1101
|
|
NICEST = 0x1102
|
|
GENERATE_MIPMAP_HINT = 0x8192
|
|
BYTE = 0x1400
|
|
UNSIGNED_BYTE = 0x1401
|
|
SHORT = 0x1402
|
|
UNSIGNED_SHORT = 0x1403
|
|
INT = 0x1404
|
|
UNSIGNED_INT = 0x1405
|
|
FLOAT = 0x1406
|
|
FIXED = 0x140C
|
|
DEPTH_COMPONENT = 0x1902
|
|
ALPHA = 0x1906
|
|
RGB = 0x1907
|
|
RGBA = 0x1908
|
|
LUMINANCE = 0x1909
|
|
LUMINANCE_ALPHA = 0x190A
|
|
UNSIGNED_SHORT_4_4_4_4 = 0x8033
|
|
UNSIGNED_SHORT_5_5_5_1 = 0x8034
|
|
UNSIGNED_SHORT_5_6_5 = 0x8363
|
|
MAX_VERTEX_ATTRIBS = 0x8869
|
|
MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB
|
|
MAX_VARYING_VECTORS = 0x8DFC
|
|
MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D
|
|
MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C
|
|
MAX_TEXTURE_IMAGE_UNITS = 0x8872
|
|
MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD
|
|
SHADER_TYPE = 0x8B4F
|
|
DELETE_STATUS = 0x8B80
|
|
LINK_STATUS = 0x8B82
|
|
VALIDATE_STATUS = 0x8B83
|
|
ATTACHED_SHADERS = 0x8B85
|
|
ACTIVE_UNIFORMS = 0x8B86
|
|
ACTIVE_UNIFORM_MAX_LENGTH = 0x8B87
|
|
ACTIVE_ATTRIBUTES = 0x8B89
|
|
ACTIVE_ATTRIBUTE_MAX_LENGTH = 0x8B8A
|
|
SHADING_LANGUAGE_VERSION = 0x8B8C
|
|
CURRENT_PROGRAM = 0x8B8D
|
|
NEVER = 0x0200
|
|
LESS = 0x0201
|
|
EQUAL = 0x0202
|
|
LEQUAL = 0x0203
|
|
GREATER = 0x0204
|
|
NOTEQUAL = 0x0205
|
|
GEQUAL = 0x0206
|
|
ALWAYS = 0x0207
|
|
KEEP = 0x1E00
|
|
REPLACE = 0x1E01
|
|
INCR = 0x1E02
|
|
DECR = 0x1E03
|
|
INVERT = 0x150A
|
|
INCR_WRAP = 0x8507
|
|
DECR_WRAP = 0x8508
|
|
VENDOR = 0x1F00
|
|
RENDERER = 0x1F01
|
|
VERSION = 0x1F02
|
|
EXTENSIONS = 0x1F03
|
|
NEAREST = 0x2600
|
|
LINEAR = 0x2601
|
|
NEAREST_MIPMAP_NEAREST = 0x2700
|
|
LINEAR_MIPMAP_NEAREST = 0x2701
|
|
NEAREST_MIPMAP_LINEAR = 0x2702
|
|
LINEAR_MIPMAP_LINEAR = 0x2703
|
|
TEXTURE_MAG_FILTER = 0x2800
|
|
TEXTURE_MIN_FILTER = 0x2801
|
|
TEXTURE_WRAP_S = 0x2802
|
|
TEXTURE_WRAP_T = 0x2803
|
|
TEXTURE = 0x1702
|
|
TEXTURE_CUBE_MAP = 0x8513
|
|
TEXTURE_BINDING_CUBE_MAP = 0x8514
|
|
TEXTURE_CUBE_MAP_POSITIVE_X = 0x8515
|
|
TEXTURE_CUBE_MAP_NEGATIVE_X = 0x8516
|
|
TEXTURE_CUBE_MAP_POSITIVE_Y = 0x8517
|
|
TEXTURE_CUBE_MAP_NEGATIVE_Y = 0x8518
|
|
TEXTURE_CUBE_MAP_POSITIVE_Z = 0x8519
|
|
TEXTURE_CUBE_MAP_NEGATIVE_Z = 0x851A
|
|
MAX_CUBE_MAP_TEXTURE_SIZE = 0x851C
|
|
TEXTURE0 = 0x84C0
|
|
TEXTURE1 = 0x84C1
|
|
TEXTURE2 = 0x84C2
|
|
TEXTURE3 = 0x84C3
|
|
TEXTURE4 = 0x84C4
|
|
TEXTURE5 = 0x84C5
|
|
TEXTURE6 = 0x84C6
|
|
TEXTURE7 = 0x84C7
|
|
TEXTURE8 = 0x84C8
|
|
TEXTURE9 = 0x84C9
|
|
TEXTURE10 = 0x84CA
|
|
TEXTURE11 = 0x84CB
|
|
TEXTURE12 = 0x84CC
|
|
TEXTURE13 = 0x84CD
|
|
TEXTURE14 = 0x84CE
|
|
TEXTURE15 = 0x84CF
|
|
TEXTURE16 = 0x84D0
|
|
TEXTURE17 = 0x84D1
|
|
TEXTURE18 = 0x84D2
|
|
TEXTURE19 = 0x84D3
|
|
TEXTURE20 = 0x84D4
|
|
TEXTURE21 = 0x84D5
|
|
TEXTURE22 = 0x84D6
|
|
TEXTURE23 = 0x84D7
|
|
TEXTURE24 = 0x84D8
|
|
TEXTURE25 = 0x84D9
|
|
TEXTURE26 = 0x84DA
|
|
TEXTURE27 = 0x84DB
|
|
TEXTURE28 = 0x84DC
|
|
TEXTURE29 = 0x84DD
|
|
TEXTURE30 = 0x84DE
|
|
TEXTURE31 = 0x84DF
|
|
ACTIVE_TEXTURE = 0x84E0
|
|
REPEAT = 0x2901
|
|
CLAMP_TO_EDGE = 0x812F
|
|
MIRRORED_REPEAT = 0x8370
|
|
VERTEX_ATTRIB_ARRAY_ENABLED = 0x8622
|
|
VERTEX_ATTRIB_ARRAY_SIZE = 0x8623
|
|
VERTEX_ATTRIB_ARRAY_STRIDE = 0x8624
|
|
VERTEX_ATTRIB_ARRAY_TYPE = 0x8625
|
|
VERTEX_ATTRIB_ARRAY_NORMALIZED = 0x886A
|
|
VERTEX_ATTRIB_ARRAY_POINTER = 0x8645
|
|
VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F
|
|
IMPLEMENTATION_COLOR_READ_TYPE = 0x8B9A
|
|
IMPLEMENTATION_COLOR_READ_FORMAT = 0x8B9B
|
|
COMPILE_STATUS = 0x8B81
|
|
INFO_LOG_LENGTH = 0x8B84
|
|
SHADER_SOURCE_LENGTH = 0x8B88
|
|
SHADER_COMPILER = 0x8DFA
|
|
SHADER_BINARY_FORMATS = 0x8DF8
|
|
NUM_SHADER_BINARY_FORMATS = 0x8DF9
|
|
LOW_FLOAT = 0x8DF0
|
|
MEDIUM_FLOAT = 0x8DF1
|
|
HIGH_FLOAT = 0x8DF2
|
|
LOW_INT = 0x8DF3
|
|
MEDIUM_INT = 0x8DF4
|
|
HIGH_INT = 0x8DF5
|
|
FRAMEBUFFER = 0x8D40
|
|
RENDERBUFFER = 0x8D41
|
|
RGBA4 = 0x8056
|
|
RGB5_A1 = 0x8057
|
|
RGB565 = 0x8D62
|
|
DEPTH_COMPONENT16 = 0x81A5
|
|
STENCIL_INDEX8 = 0x8D48
|
|
RENDERBUFFER_WIDTH = 0x8D42
|
|
RENDERBUFFER_HEIGHT = 0x8D43
|
|
RENDERBUFFER_INTERNAL_FORMAT = 0x8D44
|
|
RENDERBUFFER_RED_SIZE = 0x8D50
|
|
RENDERBUFFER_GREEN_SIZE = 0x8D51
|
|
RENDERBUFFER_BLUE_SIZE = 0x8D52
|
|
RENDERBUFFER_ALPHA_SIZE = 0x8D53
|
|
RENDERBUFFER_DEPTH_SIZE = 0x8D54
|
|
RENDERBUFFER_STENCIL_SIZE = 0x8D55
|
|
FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0
|
|
FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1
|
|
FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2
|
|
FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3
|
|
COLOR_ATTACHMENT0 = 0x8CE0
|
|
DEPTH_ATTACHMENT = 0x8D00
|
|
STENCIL_ATTACHMENT = 0x8D20
|
|
FRAMEBUFFER_COMPLETE = 0x8CD5
|
|
FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6
|
|
FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7
|
|
FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 0x8CD9
|
|
FRAMEBUFFER_UNSUPPORTED = 0x8CDD
|
|
FRAMEBUFFER_BINDING = 0x8CA6
|
|
RENDERBUFFER_BINDING = 0x8CA7
|
|
MAX_RENDERBUFFER_SIZE = 0x84E8
|
|
INVALID_FRAMEBUFFER_OPERATION = 0x0506
|
|
)
|
|
|
|
const (
|
|
DEPTH_BUFFER_BIT = 0x00000100
|
|
STENCIL_BUFFER_BIT = 0x00000400
|
|
COLOR_BUFFER_BIT = 0x00004000
|
|
)
|
|
|
|
const (
|
|
FLOAT_VEC2 = 0x8B50
|
|
FLOAT_VEC3 = 0x8B51
|
|
FLOAT_VEC4 = 0x8B52
|
|
INT_VEC2 = 0x8B53
|
|
INT_VEC3 = 0x8B54
|
|
INT_VEC4 = 0x8B55
|
|
BOOL = 0x8B56
|
|
BOOL_VEC2 = 0x8B57
|
|
BOOL_VEC3 = 0x8B58
|
|
BOOL_VEC4 = 0x8B59
|
|
FLOAT_MAT2 = 0x8B5A
|
|
FLOAT_MAT3 = 0x8B5B
|
|
FLOAT_MAT4 = 0x8B5C
|
|
SAMPLER_2D = 0x8B5E
|
|
SAMPLER_CUBE = 0x8B60
|
|
)
|
|
|
|
const (
|
|
FRAGMENT_SHADER = 0x8B30
|
|
VERTEX_SHADER = 0x8B31
|
|
)
|
|
|
|
const (
|
|
FALSE = 0
|
|
TRUE = 1
|
|
ZERO = 0
|
|
ONE = 1
|
|
NO_ERROR = 0
|
|
NONE = 0
|
|
)
|
|
|
|
// Attrib is an attribute index.
|
|
type Attrib uint
|
|
|
|
// Enum is equivalent to GLenum, and is normally used with one of the
|
|
// constants defined in this package.
|
|
type Enum uint32
|
|
|
|
// Program identifies a compiled shader program.
|
|
type Program uint32
|
|
|
|
// Shader identifies a GLSL shader.
|
|
type Shader uint32
|
|
|
|
// Buffer identifies a GL buffer object.
|
|
type Buffer uint32
|
|
|
|
// Framebuffer identifies a GL framebuffer.
|
|
type Framebuffer uint32
|
|
|
|
// A Renderbuffer is a GL object that holds an image in an internal format.
|
|
type Renderbuffer uint32
|
|
|
|
// A Texture identifies a GL texture unit.
|
|
type Texture uint32
|
|
|
|
// A Uniform identifies a GL uniform attribute value.
|
|
type Uniform int32
|
|
|
|
func (v Attrib) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Enum) c() C.GLenum { return C.GLenum(v) }
|
|
func (v Program) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Shader) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Buffer) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Framebuffer) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Renderbuffer) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Texture) c() C.GLuint { return C.GLuint(v) }
|
|
func (v Uniform) c() C.GLint { return C.GLint(v) }
|
|
|
|
func (v Attrib) String() string { return fmt.Sprintf("Attrib(%d)", v) }
|
|
func (v Program) String() string { return fmt.Sprintf("Program(%d)", v) }
|
|
func (v Shader) String() string { return fmt.Sprintf("Shader(%d)", v) }
|
|
func (v Buffer) String() string { return fmt.Sprintf("Buffer(%d)", v) }
|
|
func (v Framebuffer) String() string { return fmt.Sprintf("Framebuffer(%d)", v) }
|
|
func (v Renderbuffer) String() string { return fmt.Sprintf("Renderbuffer(%d)", v) }
|
|
func (v Texture) String() string { return fmt.Sprintf("Texture(%d)", v) }
|
|
func (v Uniform) String() string { return fmt.Sprintf("Uniform(%d)", v) }
|