文章目录
- gl2.h
- gl2数据结构
- gl2核心函数
- egl.h
- egl数据结构
- egl函数
包含了 gl2.h 和egl.h两个头文件
gl2.h
gl2数据结构
/*-------------------------------------------------------------------------
* Data type definitions
*-----------------------------------------------------------------------*/
typedef void GLvoid;
typedef char GLchar;
typedef unsigned int GLenum;
typedef unsigned char GLboolean;
typedef unsigned int GLbitfield;
typedef khronos_int8_t GLbyte;
typedef short GLshort;
typedef int GLint;
typedef int GLsizei;
typedef khronos_uint8_t GLubyte;
typedef unsigned short GLushort;
typedef unsigned int GLuint;
typedef khronos_float_t GLfloat;
typedef khronos_float_t GLclampf;
typedef khronos_int32_t GLfixed;
/* GL types for handling large vertex buffer objects */
typedef khronos_intptr_t GLintptr;
typedef khronos_ssize_t GLsizeiptr;
/* OpenGL ES core versions */
#define GL_ES_VERSION_2_0 1
/* ClearBufferMask */
//
#define GL_DEPTH_BUFFER_BIT 0x00000100
#define GL_STENCIL_BUFFER_BIT 0x00000400
#define GL_COLOR_BUFFER_BIT 0x00004000
/* Boolean */
#define GL_FALSE 0
#define GL_TRUE 1
/* BeginMode */
#define GL_POINTS 0x0000
#define GL_LINES 0x0001
#define GL_LINE_LOOP 0x0002
#define GL_LINE_STRIP 0x0003
#define GL_TRIANGLES 0x0004
#define GL_TRIANGLE_STRIP 0x0005
#define GL_TRIANGLE_FAN 0x0006
/* AlphaFunction (not supported in ES20) *///涓嶅啀es2.0鏀寔
/* GL_NEVER */
/* GL_LESS */
/* GL_EQUAL */
/* GL_LEQUAL */
/* GL_GREATER */
/* GL_NOTEQUAL */
/* GL_GEQUAL */
/* GL_ALWAYS */
/* BlendingFactorDest */ //铻嶅悎鍥犲瓙鏂瑰紡
#define GL_ZERO 0
#define GL_ONE 1
#define GL_SRC_COLOR 0x0300
#define GL_ONE_MINUS_SRC_COLOR 0x0301
#define GL_SRC_ALPHA 0x0302
#define GL_ONE_MINUS_SRC_ALPHA 0x0303
#define GL_DST_ALPHA 0x0304
#define GL_ONE_MINUS_DST_ALPHA 0x0305
/* BlendingFactorSrc */ //铻嶅悎鍥犲瓙鍘?
/* GL_ZERO */
/* GL_ONE */
#define GL_DST_COLOR 0x0306
#define GL_ONE_MINUS_DST_COLOR 0x0307
#define GL_SRC_ALPHA_SATURATE 0x0308
/* GL_SRC_ALPHA */
/* GL_ONE_MINUS_SRC_ALPHA */
/* GL_DST_ALPHA */
/* GL_ONE_MINUS_DST_ALPHA */
/* BlendEquationSeparate */
#define GL_FUNC_ADD 0x8006
#define GL_BLEND_EQUATION 0x8009
#define GL_BLEND_EQUATION_RGB 0x8009 /* same as BLEND_EQUATION */
#define GL_BLEND_EQUATION_ALPHA 0x883D
/* BlendSubtract */
#define GL_FUNC_SUBTRACT 0x800A
#define GL_FUNC_REVERSE_SUBTRACT 0x800B
/* Separate Blend Functions */
#define GL_BLEND_DST_RGB 0x80C8
#define GL_BLEND_SRC_RGB 0x80C9
#define GL_BLEND_DST_ALPHA 0x80CA
#define GL_BLEND_SRC_ALPHA 0x80CB
#define GL_CONSTANT_COLOR 0x8001
#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
#define GL_CONSTANT_ALPHA 0x8003
#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
#define GL_BLEND_COLOR 0x8005
/* Buffer Objects */
#define GL_ARRAY_BUFFER 0x8892
#define GL_ELEMENT_ARRAY_BUFFER 0x8893
#define GL_ARRAY_BUFFER_BINDING 0x8894
#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
#define GL_STREAM_DRAW 0x88E0
#define GL_STATIC_DRAW 0x88E4
#define GL_DYNAMIC_DRAW 0x88E8
#define GL_BUFFER_SIZE 0x8764
#define GL_BUFFER_USAGE 0x8765
#define GL_CURRENT_VERTEX_ATTRIB 0x8626
/* CullFaceMode */
#define GL_FRONT 0x0404
#define GL_BACK 0x0405
#define GL_FRONT_AND_BACK 0x0408
/* DepthFunction */
/* GL_NEVER */
/* GL_LESS */
/* GL_EQUAL */
/* GL_LEQUAL */
/* GL_GREATER */
/* GL_NOTEQUAL */
/* GL_GEQUAL */
/* GL_ALWAYS */
/* EnableCap */
#define GL_TEXTURE_2D 0x0DE1
#define GL_CULL_FACE 0x0B44
#define GL_BLEND 0x0BE2
#define GL_DITHER 0x0BD0
#define GL_STENCIL_TEST 0x0B90
#define GL_DEPTH_TEST 0x0B71
#define GL_SCISSOR_TEST 0x0C11
#define GL_POLYGON_OFFSET_FILL 0x8037
#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
#define GL_SAMPLE_COVERAGE 0x80A0
/* ErrorCode */
#define GL_NO_ERROR 0
#define GL_INVALID_ENUM 0x0500
#define GL_INVALID_VALUE 0x0501
#define GL_INVALID_OPERATION 0x0502
#define GL_OUT_OF_MEMORY 0x0505
/* FrontFaceDirection */
#define GL_CW 0x0900
#define GL_CCW 0x0901
/* GetPName */
#define GL_LINE_WIDTH 0x0B21
#define GL_ALIASED_POINT_SIZE_RANGE 0x846D
#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
#define GL_CULL_FACE_MODE 0x0B45
#define GL_FRONT_FACE 0x0B46
#define GL_DEPTH_RANGE 0x0B70
#define GL_DEPTH_WRITEMASK 0x0B72
#define GL_DEPTH_CLEAR_VALUE 0x0B73
#define GL_DEPTH_FUNC 0x0B74
#define GL_STENCIL_CLEAR_VALUE 0x0B91
#define GL_STENCIL_FUNC 0x0B92
#define GL_STENCIL_FAIL 0x0B94
#define GL_STENCIL_PASS_DEPTH_FAIL 0x0B95
#define GL_STENCIL_PASS_DEPTH_PASS 0x0B96
#define GL_STENCIL_REF 0x0B97
#define GL_STENCIL_VALUE_MASK 0x0B93
#define GL_STENCIL_WRITEMASK 0x0B98
#define GL_STENCIL_BACK_FUNC 0x8800
#define GL_STENCIL_BACK_FAIL 0x8801
#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
#define GL_STENCIL_BACK_REF 0x8CA3
#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
#define GL_VIEWPORT 0x0BA2
#define GL_SCISSOR_BOX 0x0C10
/* GL_SCISSOR_TEST */
#define GL_COLOR_CLEAR_VALUE 0x0C22
#define GL_COLOR_WRITEMASK 0x0C23
#define GL_UNPACK_ALIGNMENT 0x0CF5
#define GL_PACK_ALIGNMENT 0x0D05
#define GL_MAX_TEXTURE_SIZE 0x0D33
#define GL_MAX_VIEWPORT_DIMS 0x0D3A
#define GL_SUBPIXEL_BITS 0x0D50
#define GL_RED_BITS 0x0D52
#define GL_GREEN_BITS 0x0D53
#define GL_BLUE_BITS 0x0D54
#define GL_ALPHA_BITS 0x0D55
#define GL_DEPTH_BITS 0x0D56
#define GL_STENCIL_BITS 0x0D57
#define GL_POLYGON_OFFSET_UNITS 0x2A00
/* GL_POLYGON_OFFSET_FILL */
#define GL_POLYGON_OFFSET_FACTOR 0x8038
#define GL_TEXTURE_BINDING_2D 0x8069
#define GL_SAMPLE_BUFFERS 0x80A8
#define GL_SAMPLES 0x80A9
#define GL_SAMPLE_COVERAGE_VALUE 0x80AA
#define GL_SAMPLE_COVERAGE_INVERT 0x80AB
/* GetTextureParameter */
/* GL_TEXTURE_MAG_FILTER */
/* GL_TEXTURE_MIN_FILTER */
/* GL_TEXTURE_WRAP_S */
/* GL_TEXTURE_WRAP_T */
#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
#define GL_COMPRESSED_TEXTURE_FORMATS 0x86A3
/* HintMode */
#define GL_DONT_CARE 0x1100
#define GL_FASTEST 0x1101
#define GL_NICEST 0x1102
/* HintTarget */
#define GL_GENERATE_MIPMAP_HINT 0x8192
/* DataType */
#define GL_BYTE 0x1400
#define GL_UNSIGNED_BYTE 0x1401
#define GL_SHORT 0x1402
#define GL_UNSIGNED_SHORT 0x1403
#define GL_INT 0x1404
#define GL_UNSIGNED_INT 0x1405
#define GL_FLOAT 0x1406
#define GL_FIXED 0x140C
/* PixelFormat */
#define GL_DEPTH_COMPONENT 0x1902
#define GL_ALPHA 0x1906
#define GL_RGB 0x1907
#define GL_RGBA 0x1908
#define GL_LUMINANCE 0x1909
#define GL_LUMINANCE_ALPHA 0x190A
/* PixelType */
/* GL_UNSIGNED_BYTE */
#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
#define GL_UNSIGNED_SHORT_5_6_5 0x8363
/* Shaders */
#define GL_FRAGMENT_SHADER 0x8B30
#define GL_VERTEX_SHADER 0x8B31
#define GL_MAX_VERTEX_ATTRIBS 0x8869
#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
#define GL_MAX_VARYING_VECTORS 0x8DFC
#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
#define GL_SHADER_TYPE 0x8B4F
#define GL_DELETE_STATUS 0x8B80
#define GL_LINK_STATUS 0x8B82
#define GL_VALIDATE_STATUS 0x8B83
#define GL_ATTACHED_SHADERS 0x8B85
#define GL_ACTIVE_UNIFORMS 0x8B86
#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
#define GL_ACTIVE_ATTRIBUTES 0x8B89
#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
#define GL_CURRENT_PROGRAM 0x8B8D
/* StencilFunction */
#define GL_NEVER 0x0200
#define GL_LESS 0x0201
#define GL_EQUAL 0x0202
#define GL_LEQUAL 0x0203
#define GL_GREATER 0x0204
#define GL_NOTEQUAL 0x0205
#define GL_GEQUAL 0x0206
#define GL_ALWAYS 0x0207
/* StencilOp */
/* GL_ZERO */
#define GL_KEEP 0x1E00
#define GL_REPLACE 0x1E01
#define GL_INCR 0x1E02
#define GL_DECR 0x1E03
#define GL_INVERT 0x150A
#define GL_INCR_WRAP 0x8507
#define GL_DECR_WRAP 0x8508
/* StringName */
#define GL_VENDOR 0x1F00
#define GL_RENDERER 0x1F01
#define GL_VERSION 0x1F02
#define GL_EXTENSIONS 0x1F03
/* TextureMagFilter */
#define GL_NEAREST 0x2600
#define GL_LINEAR 0x2601
/* TextureMinFilter */
/* GL_NEAREST */
/* GL_LINEAR */
#define GL_NEAREST_MIPMAP_NEAREST 0x2700
#define GL_LINEAR_MIPMAP_NEAREST 0x2701
#define GL_NEAREST_MIPMAP_LINEAR 0x2702
#define GL_LINEAR_MIPMAP_LINEAR 0x2703
/* TextureParameterName */
#define GL_TEXTURE_MAG_FILTER 0x2800
#define GL_TEXTURE_MIN_FILTER 0x2801
#define GL_TEXTURE_WRAP_S 0x2802
#define GL_TEXTURE_WRAP_T 0x2803
/* TextureTarget */
/* GL_TEXTURE_2D */
#define GL_TEXTURE 0x1702
#define GL_TEXTURE_CUBE_MAP 0x8513
#define GL_TEXTURE_BINDING_CUBE_MAP 0x8514
#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
/* TextureUnit */
#define GL_TEXTURE0 0x84C0
#define GL_TEXTURE1 0x84C1
#define GL_TEXTURE2 0x84C2
#define GL_TEXTURE3 0x84C3
#define GL_TEXTURE4 0x84C4
#define GL_TEXTURE5 0x84C5
#define GL_TEXTURE6 0x84C6
#define GL_TEXTURE7 0x84C7
#define GL_TEXTURE8 0x84C8
#define GL_TEXTURE9 0x84C9
#define GL_TEXTURE10 0x84CA
#define GL_TEXTURE11 0x84CB
#define GL_TEXTURE12 0x84CC
#define GL_TEXTURE13 0x84CD
#define GL_TEXTURE14 0x84CE
#define GL_TEXTURE15 0x84CF
#define GL_TEXTURE16 0x84D0
#define GL_TEXTURE17 0x84D1
#define GL_TEXTURE18 0x84D2
#define GL_TEXTURE19 0x84D3
#define GL_TEXTURE20 0x84D4
#define GL_TEXTURE21 0x84D5
#define GL_TEXTURE22 0x84D6
#define GL_TEXTURE23 0x84D7
#define GL_TEXTURE24 0x84D8
#define GL_TEXTURE25 0x84D9
#define GL_TEXTURE26 0x84DA
#define GL_TEXTURE27 0x84DB
#define GL_TEXTURE28 0x84DC
#define GL_TEXTURE29 0x84DD
#define GL_TEXTURE30 0x84DE
#define GL_TEXTURE31 0x84DF
#define GL_ACTIVE_TEXTURE 0x84E0
/* TextureWrapMode */
#define GL_REPEAT 0x2901
#define GL_CLAMP_TO_EDGE 0x812F
#define GL_MIRRORED_REPEAT 0x8370
/* Uniform Types */
#define GL_FLOAT_VEC2 0x8B50
#define GL_FLOAT_VEC3 0x8B51
#define GL_FLOAT_VEC4 0x8B52
#define GL_INT_VEC2 0x8B53
#define GL_INT_VEC3 0x8B54
#define GL_INT_VEC4 0x8B55
#define GL_BOOL 0x8B56
#define GL_BOOL_VEC2 0x8B57
#define GL_BOOL_VEC3 0x8B58
#define GL_BOOL_VEC4 0x8B59
#define GL_FLOAT_MAT2 0x8B5A
#define GL_FLOAT_MAT3 0x8B5B
#define GL_FLOAT_MAT4 0x8B5C
#define GL_SAMPLER_2D 0x8B5E
#define GL_SAMPLER_CUBE 0x8B60
/* Vertex Arrays */
#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
/* Read Format */
#define GL_IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A
#define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B
/* Shader Source */
#define GL_COMPILE_STATUS 0x8B81
#define GL_INFO_LOG_LENGTH 0x8B84
#define GL_SHADER_SOURCE_LENGTH 0x8B88
#define GL_SHADER_COMPILER 0x8DFA
/* Shader Binary */
#define GL_SHADER_BINARY_FORMATS 0x8DF8
#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9
/* Shader Precision-Specified Types */
#define GL_LOW_FLOAT 0x8DF0
#define GL_MEDIUM_FLOAT 0x8DF1
#define GL_HIGH_FLOAT 0x8DF2
#define GL_LOW_INT 0x8DF3
#define GL_MEDIUM_INT 0x8DF4
#define GL_HIGH_INT 0x8DF5
/* Framebuffer Object. */
#define GL_FRAMEBUFFER 0x8D40
#define GL_RENDERBUFFER 0x8D41
#define GL_RGBA4 0x8056
#define GL_RGB5_A1 0x8057
#define GL_RGB565 0x8D62
#define GL_DEPTH_COMPONENT16 0x81A5
#define GL_STENCIL_INDEX 0x1901
#define GL_STENCIL_INDEX8 0x8D48
#define GL_RENDERBUFFER_WIDTH 0x8D42
#define GL_RENDERBUFFER_HEIGHT 0x8D43
#define GL_RENDERBUFFER_INTERNAL_FORMAT 0x8D44
#define GL_RENDERBUFFER_RED_SIZE 0x8D50
#define GL_RENDERBUFFER_GREEN_SIZE 0x8D51
#define GL_RENDERBUFFER_BLUE_SIZE 0x8D52
#define GL_RENDERBUFFER_ALPHA_SIZE 0x8D53
#define GL_RENDERBUFFER_DEPTH_SIZE 0x8D54
#define GL_RENDERBUFFER_STENCIL_SIZE 0x8D55
#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0
#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
#define GL_COLOR_ATTACHMENT0 0x8CE0
#define GL_DEPTH_ATTACHMENT 0x8D00
#define GL_STENCIL_ATTACHMENT 0x8D20
#define GL_NONE 0
#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
#define GL_FRAMEBUFFER_BINDING 0x8CA6
#define GL_RENDERBUFFER_BINDING 0x8CA7
#define GL_MAX_RENDERBUFFER_SIZE 0x84E8
#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506gl2核心函数
/*-------------------------------------------------------------------------
* GL core functions.
*-----------------------------------------------------------------------*/
//Parametersd
//多级纹理时使用
//指定要激活的纹理单元。 纹理单元的数量取决于实现，但必须至少为8.
//纹理必须是GL_TEXTURE之一
//其中i的范围从0到（GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS - 1）。 GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS最大纹理单元数
//初始值为GL_TEXTURE0。
//Description
//指定要激活的纹理单元。
//实现支持的纹理单元的数量取决于实现，但必须至少为8。
//选择当前活跃的纹理单元
GL_APICALL void GL_APIENTRY glActiveTexture (GLenum texture);
//将着色器对象附加到program对象
GL_APICALL void GL_APIENTRY glAttachShader (GLuint program, GLuint shader);
//关联program的通用顶点属性，在shader通常是 attribute这么声明的
//使顶点着色器可以使用属性变量的描述性名称
GL_APICALL void GL_APIENTRY glBindAttribLocation (GLuint program, GLuint index, const GLchar* name);
//激活缓冲区对象
GL_APICALL void GL_APIENTRY glBindBuffer (GLenum target, GLuint buffer);
//绑定FBO
GL_APICALL void GL_APIENTRY glBindFramebuffer (GLenum target, GLuint framebuffer);
GL_APICALL void GL_APIENTRY glBindRenderbuffer (GLenum target, GLuint renderbuffer);
//允许建立一个绑定到目标纹理的 有名称的纹理
GL_APICALL void GL_APIENTRY glBindTexture (GLenum target, GLuint texture);
//颜色混合相关
GL_APICALL void GL_APIENTRY glBlendColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
GL_APICALL void GL_APIENTRY glBlendEquation ( GLenum mode );
GL_APICALL void GL_APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
//指定颜色混合的方式
GL_APICALL void GL_APIENTRY glBlendFunc (GLenum sfactor, GLenum dfactor);
GL_APICALL void GL_APIENTRY glBlendFuncSeparate (GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
//将数据上传到缓冲区
GL_APICALL void GL_APIENTRY glBufferData (GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage);
GL_APICALL void GL_APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data);
GL_APICALL GLenum GL_APIENTRY glCheckFramebufferStatus (GLenum target);
//表明需要清除的缓冲, 将缓存清除为预先的设置值
GL_APICALL void GL_APIENTRY glClear (GLbitfield mask);
//设置颜色缓存的清除值
GL_APICALL void GL_APIENTRY glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
//设置深度缓存的清除值
GL_APICALL void GL_APIENTRY glClearDepthf (GLclampf depth);
//glClearStencil指定glClear用于清除模板缓冲区的索引
GL_APICALL void GL_APIENTRY glClearStencil (GLint s);
//glColorMask指定是否可以写入帧缓冲区中的各个颜色分量。
GL_APICALL void GL_APIENTRY glColorMask (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
//编译shader
GL_APICALL void GL_APIENTRY glCompileShader (GLuint shader);
//提取纹理压缩数据
GL_APICALL void GL_APIENTRY glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid* data);
GL_APICALL void GL_APIENTRY glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid* data);
//从颜色缓冲区加载纹理
GL_APICALL void GL_APIENTRY glCopyTexImage2D (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
//替换纹理
GL_APICALL void GL_APIENTRY glCopyTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
//创建program 对象
GL_APICALL GLuint GL_APIENTRY glCreateProgram (void);
//创建shader
//GL_VERTEX_SHADER 定点shader
//GL_FRAGMENT_SHADER 像素shader
GL_APICALL GLuint GL_APIENTRY glCreateShader (GLenum type);
//剔除面
GL_APICALL void GL_APIENTRY glCullFace (GLenum mode);
//删除buffer
GL_APICALL void GL_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers);
//删除FBO
GL_APICALL void GL_APIENTRY glDeleteFramebuffers (GLsizei n, const GLuint* framebuffers);
//删除program
GL_APICALL void GL_APIENTRY glDeleteProgram (GLuint program);
//删除renderer buffer
GL_APICALL void GL_APIENTRY glDeleteRenderbuffers (GLsizei n, const GLuint* renderbuffers);
//删除shader
GL_APICALL void GL_APIENTRY glDeleteShader (GLuint shader);
//删除纹理
GL_APICALL void GL_APIENTRY glDeleteTextures (GLsizei n, const GLuint* textures);
//指定“目标像素与当前像素在z方向上值大小比较”（即深度的比较）的函数，符合该函数关系的目标像素才进行绘制（渲染），否则对目标像素不予绘制
GL_APICALL void GL_APIENTRY glDepthFunc (GLenum func);
//
GL_APICALL void GL_APIENTRY glDepthMask (GLboolean flag);
GL_APICALL void GL_APIENTRY glDepthRangef (GLclampf zNear, GLclampf zFar);
GL_APICALL void GL_APIENTRY glDetachShader (GLuint program, GLuint shader);
//关闭一种状态
GL_APICALL void GL_APIENTRY glDisable (GLenum cap);
//关闭顶点属性
GL_APICALL void GL_APIENTRY glDisableVertexAttribArray (GLuint index);
GL_APICALL void GL_APIENTRY glDrawArrays (GLenum mode, GLint first, GLsizei count);
GL_APICALL void GL_APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const GLvoid* indices);
//开启一种状态
GL_APICALL void GL_APIENTRY glEnable (GLenum cap);
//开启定点属性
GL_APICALL void GL_APIENTRY glEnableVertexAttribArray (GLuint index);
//将缓冲区的指令立即送往硬件执行，但是要一直等到硬件执行完这些指令之后才返回。
GL_APICALL void GL_APIENTRY glFinish (void);
//将GL命令队列中的命令发送给显卡并清空命令队列，发送完立即返回
GL_APICALL void GL_APIENTRY glFlush (void);
GL_APICALL void GL_APIENTRY glFramebufferRenderbuffer (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
GL_APICALL void GL_APIENTRY glFramebufferTexture2D (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
//设置正面
GL_APICALL void GL_APIENTRY glFrontFace (GLenum mode);
//创建缓冲区
GL_APICALL void GL_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers);
//创建Mipmap
GL_APICALL void GL_APIENTRY glGenerateMipmap (GLenum target);
//生成缓冲区名称
GL_APICALL void GL_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers);
GL_APICALL void GL_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers);
//纹理对象
GL_APICALL void GL_APIENTRY glGenTextures (GLsizei n, GLuint* textures);
GL_APICALL void GL_APIENTRY glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
GL_APICALL void GL_APIENTRY glGetActiveUniform (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
GL_APICALL void GL_APIENTRY glGetAttachedShaders (GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
//cpu属性和gpu属性绑定关联
GL_APICALL int GL_APIENTRY glGetAttribLocation (GLuint program, const GLchar* name);
GL_APICALL void GL_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params);
GL_APICALL void GL_APIENTRY glGetBufferParameteriv (GLenum target, GLenum pname, GLint* params);
//获取error code
GL_APICALL GLenum GL_APIENTRY glGetError (void);
//获取支持点的大小范围和步长
GL_APICALL void GL_APIENTRY glGetFloatv (GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetFramebufferAttachmentParameteriv (GLenum target, GLenum attachment, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetIntegerv (GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufsize, GLsizei* length, GLchar* infolog);
GL_APICALL void GL_APIENTRY glGetRenderbufferParameteriv (GLenum target, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params);
//获取shader日志
GL_APICALL void GL_APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* infolog);
GL_APICALL void GL_APIENTRY glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
GL_APICALL void GL_APIENTRY glGetShaderSource (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* source);
GL_APICALL const GLubyte* GL_APIENTRY glGetString (GLenum name);
GL_APICALL void GL_APIENTRY glGetTexParameterfv (GLenum target, GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetTexParameteriv (GLenum target, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetUniformfv (GLuint program, GLint location, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetUniformiv (GLuint program, GLint location, GLint* params);
//绑定uniform cpu与gpu变量关联
GL_APICALL int GL_APIENTRY glGetUniformLocation (GLuint program, const GLchar* name);
GL_APICALL void GL_APIENTRY glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, GLvoid** pointer);
//纹理压缩模式
GL_APICALL void GL_APIENTRY glHint (GLenum target, GLenum mode);
//判断是否是缓冲区对象
GL_APICALL GLboolean GL_APIENTRY glIsBuffer (GLuint buffer);
//获取是否有效 GL_BLEND /GL_CULL_FACE 等
GL_APICALL GLboolean GL_APIENTRY glIsEnabled (GLenum cap);
//判断是否是framebuffer
GL_APICALL GLboolean GL_APIENTRY glIsFramebuffer (GLuint framebuffer);
//判断是否为Program
GL_APICALL GLboolean GL_APIENTRY glIsProgram (GLuint program);
//判断是否为rendererbuffer
GL_APICALL GLboolean GL_APIENTRY glIsRenderbuffer (GLuint renderbuffer);
//判断是否为shader
GL_APICALL GLboolean GL_APIENTRY glIsShader (GLuint shader);
//判断是否为纹理
GL_APICALL GLboolean GL_APIENTRY glIsTexture (GLuint texture);
//线宽度设置
GL_APICALL void GL_APIENTRY glLineWidth (GLfloat width);
//链接program 对象
GL_APICALL void GL_APIENTRY glLinkProgram (GLuint program);
//控制的是所读取数据的对齐方式，默认4字节对齐，即一行的图像数据字节数必须是4的整数倍，
//即读取数据时，读取4个字节用来渲染一行，之后读取4字节数据用来渲染第二行。
//对RGB 3字节像素而言，若一行10个像素，即30个字节，在4字节对齐模式下，OpenGL会读取32个字节的数据，若不加注意，
//会导致glTextImage中致函数的读取越界，从而全面崩溃。
GL_APICALL void GL_APIENTRY glPixelStorei (GLenum pname, GLint param);
//深度值偏移
GL_APICALL void GL_APIENTRY glPolygonOffset (GLfloat factor, GLfloat units);
//把已经绘制好的像素（它可能已经被保存到显卡的显存中）读取到内存
GL_APICALL void GL_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels);
//释放shader编译器占的资源
GL_APICALL void GL_APIENTRY glReleaseShaderCompiler (void);
//--没翻译呢start
GL_APICALL void GL_APIENTRY glRenderbufferStorage (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
GL_APICALL void GL_APIENTRY glSampleCoverage (GLclampf value, GLboolean invert);
//--没翻译呢end
//裁剪
GL_APICALL void GL_APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
//--没翻译呢start
GL_APICALL void GL_APIENTRY glShaderBinary (GLsizei n, const GLuint* shaders, GLenum binaryformat, const GLvoid* binary, GLsizei length);
GL_APICALL void GL_APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar** string, const GLint* length);
GL_APICALL void GL_APIENTRY glStencilFunc (GLenum func, GLint ref, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilMask (GLuint mask);
GL_APICALL void GL_APIENTRY glStencilMaskSeparate (GLenum face, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilOp (GLenum fail, GLenum zfail, GLenum zpass);
GL_APICALL void GL_APIENTRY glStencilOpSeparate (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
//--没翻译呢end
//载入纹理
GL_APICALL void GL_APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
//纹理参数相关
GL_APICALL void GL_APIENTRY glTexParameterf (GLenum target, GLenum pname, GLfloat param);
GL_APICALL void GL_APIENTRY glTexParameterfv (GLenum target, GLenum pname, const GLfloat* params);
GL_APICALL void GL_APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
GL_APICALL void GL_APIENTRY glTexParameteriv (GLenum target, GLenum pname, const GLint* params);
//部分更新纹理
GL_APICALL void GL_APIENTRY glTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels);
//向着色器传递参数
GL_APICALL void GL_APIENTRY glUniform1f (GLint location, GLfloat x);
GL_APICALL void GL_APIENTRY glUniform1fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform1i (GLint location, GLint x);
GL_APICALL void GL_APIENTRY glUniform1iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform2f (GLint location, GLfloat x, GLfloat y);
GL_APICALL void GL_APIENTRY glUniform2fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform2i (GLint location, GLint x, GLint y);
GL_APICALL void GL_APIENTRY glUniform2iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform3f (GLint location, GLfloat x, GLfloat y, GLfloat z);
GL_APICALL void GL_APIENTRY glUniform3fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform3i (GLint location, GLint x, GLint y, GLint z);
GL_APICALL void GL_APIENTRY glUniform3iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform4f (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
GL_APICALL void GL_APIENTRY glUniform4fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform4i (GLint location, GLint x, GLint y, GLint z, GLint w);
GL_APICALL void GL_APIENTRY glUniform4iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
GL_APICALL void GL_APIENTRY glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
GL_APICALL void GL_APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
//使用program
GL_APICALL void GL_APIENTRY glUseProgram (GLuint program);
//验证program是否可以执行
GL_APICALL void GL_APIENTRY glValidateProgram (GLuint program);
//顶点着色器传递参数
GL_APICALL void GL_APIENTRY glVertexAttrib1f (GLuint indx, GLfloat x);
GL_APICALL void GL_APIENTRY glVertexAttrib1fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib2f (GLuint indx, GLfloat x, GLfloat y);
GL_APICALL void GL_APIENTRY glVertexAttrib2fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib3f (GLuint indx, GLfloat x, GLfloat y, GLfloat z);
GL_APICALL void GL_APIENTRY glVertexAttrib3fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
GL_APICALL void GL_APIENTRY glVertexAttrib4fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttribPointer (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid* ptr);
//设置视口
GL_APICALL void GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);egl.h
egl数据结构
/* EGL Types */
/* EGLint is defined in eglplatform.h */
typedef unsigned int EGLBoolean;
typedef unsigned int EGLenum;
typedef void *EGLConfig;
typedef void *EGLContext;
typedef void *EGLDisplay;
typedef void *EGLSurface;
typedef void *EGLClientBuffer;
/* EGL Versioning */
#define EGL_VERSION_1_0 1
#define EGL_VERSION_1_1 1
#define EGL_VERSION_1_2 1
#define EGL_VERSION_1_3 1
#define EGL_VERSION_1_4 1
/* EGL Enumerants. Bitmasks and other exceptional cases aside, most
* enums are assigned unique values starting at 0x3000.
*/
/* EGL aliases */
#define EGL_FALSE 0
#define EGL_TRUE 1
/* Out-of-band handle values */
#define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0)
#define EGL_NO_CONTEXT ((EGLContext)0)
#define EGL_NO_DISPLAY ((EGLDisplay)0)
#define EGL_NO_SURFACE ((EGLSurface)0)
/* Out-of-band attribute value */
#define EGL_DONT_CARE ((EGLint)-1)
/* Errors / GetError return values */
#define EGL_SUCCESS 0x3000
#define EGL_NOT_INITIALIZED 0x3001
#define EGL_BAD_ACCESS 0x3002
#define EGL_BAD_ALLOC 0x3003
#define EGL_BAD_ATTRIBUTE 0x3004
#define EGL_BAD_CONFIG 0x3005
#define EGL_BAD_CONTEXT 0x3006
#define EGL_BAD_CURRENT_SURFACE 0x3007
#define EGL_BAD_DISPLAY 0x3008
#define EGL_BAD_MATCH 0x3009
#define EGL_BAD_NATIVE_PIXMAP 0x300A
#define EGL_BAD_NATIVE_WINDOW 0x300B
#define EGL_BAD_PARAMETER 0x300C
#define EGL_BAD_SURFACE 0x300D
#define EGL_CONTEXT_LOST 0x300E /* EGL 1.1 - IMG_power_management */
/* Reserved 0x300F-0x301F for additional errors */
/* Config attributes */
#define EGL_BUFFER_SIZE 0x3020
#define EGL_ALPHA_SIZE 0x3021
#define EGL_BLUE_SIZE 0x3022
#define EGL_GREEN_SIZE 0x3023
#define EGL_RED_SIZE 0x3024
#define EGL_DEPTH_SIZE 0x3025
#define EGL_STENCIL_SIZE 0x3026
#define EGL_CONFIG_CAVEAT 0x3027
#define EGL_CONFIG_ID 0x3028
#define EGL_LEVEL 0x3029
#define EGL_MAX_PBUFFER_HEIGHT 0x302A
#define EGL_MAX_PBUFFER_PIXELS 0x302B
#define EGL_MAX_PBUFFER_WIDTH 0x302C
#define EGL_NATIVE_RENDERABLE 0x302D
#define EGL_NATIVE_VISUAL_ID 0x302E
#define EGL_NATIVE_VISUAL_TYPE 0x302F
#define EGL_SAMPLES 0x3031
#define EGL_SAMPLE_BUFFERS 0x3032
#define EGL_SURFACE_TYPE 0x3033
#define EGL_TRANSPARENT_TYPE 0x3034
#define EGL_TRANSPARENT_BLUE_VALUE 0x3035
#define EGL_TRANSPARENT_GREEN_VALUE 0x3036
#define EGL_TRANSPARENT_RED_VALUE 0x3037
#define EGL_NONE 0x3038 /* Attrib list terminator */
#define EGL_BIND_TO_TEXTURE_RGB 0x3039
#define EGL_BIND_TO_TEXTURE_RGBA 0x303A
#define EGL_MIN_SWAP_INTERVAL 0x303B
#define EGL_MAX_SWAP_INTERVAL 0x303C
#define EGL_LUMINANCE_SIZE 0x303D
#define EGL_ALPHA_MASK_SIZE 0x303E
#define EGL_COLOR_BUFFER_TYPE 0x303F
#define EGL_RENDERABLE_TYPE 0x3040
#define EGL_MATCH_NATIVE_PIXMAP 0x3041 /* Pseudo-attribute (not queryable) */
#define EGL_CONFORMANT 0x3042
/* Reserved 0x3041-0x304F for additional config attributes */
/* Config attribute values */
#define EGL_SLOW_CONFIG 0x3050 /* EGL_CONFIG_CAVEAT value */
#define EGL_NON_CONFORMANT_CONFIG 0x3051 /* EGL_CONFIG_CAVEAT value */
#define EGL_TRANSPARENT_RGB 0x3052 /* EGL_TRANSPARENT_TYPE value */
#define EGL_RGB_BUFFER 0x308E /* EGL_COLOR_BUFFER_TYPE value */
#define EGL_LUMINANCE_BUFFER 0x308F /* EGL_COLOR_BUFFER_TYPE value */
/* More config attribute values, for EGL_TEXTURE_FORMAT */
#define EGL_NO_TEXTURE 0x305C
#define EGL_TEXTURE_RGB 0x305D
#define EGL_TEXTURE_RGBA 0x305E
#define EGL_TEXTURE_2D 0x305F
/* Config attribute mask bits */
#define EGL_PBUFFER_BIT 0x0001 /* EGL_SURFACE_TYPE mask bits */
#define EGL_PIXMAP_BIT 0x0002 /* EGL_SURFACE_TYPE mask bits */
#define EGL_WINDOW_BIT 0x0004 /* EGL_SURFACE_TYPE mask bits */
#define EGL_VG_COLORSPACE_LINEAR_BIT 0x0020 /* EGL_SURFACE_TYPE mask bits */
#define EGL_VG_ALPHA_FORMAT_PRE_BIT 0x0040 /* EGL_SURFACE_TYPE mask bits */
#define EGL_MULTISAMPLE_RESOLVE_BOX_BIT 0x0200 /* EGL_SURFACE_TYPE mask bits */
#define EGL_SWAP_BEHAVIOR_PRESERVED_BIT 0x0400 /* EGL_SURFACE_TYPE mask bits */
#define EGL_OPENGL_ES_BIT 0x0001 /* EGL_RENDERABLE_TYPE mask bits */
#define EGL_OPENVG_BIT 0x0002 /* EGL_RENDERABLE_TYPE mask bits */
#define EGL_OPENGL_ES2_BIT 0x0004 /* EGL_RENDERABLE_TYPE mask bits */
#define EGL_OPENGL_BIT 0x0008 /* EGL_RENDERABLE_TYPE mask bits */
/* QueryString targets */
#define EGL_VENDOR 0x3053
#define EGL_VERSION 0x3054
#define EGL_EXTENSIONS 0x3055
#define EGL_CLIENT_APIS 0x308D
/* QuerySurface / SurfaceAttrib / CreatePbufferSurface targets */
#define EGL_HEIGHT 0x3056
#define EGL_WIDTH 0x3057
#define EGL_LARGEST_PBUFFER 0x3058
#define EGL_TEXTURE_FORMAT 0x3080
#define EGL_TEXTURE_TARGET 0x3081
#define EGL_MIPMAP_TEXTURE 0x3082
#define EGL_MIPMAP_LEVEL 0x3083
#define EGL_RENDER_BUFFER 0x3086
#define EGL_VG_COLORSPACE 0x3087
#define EGL_VG_ALPHA_FORMAT 0x3088
#define EGL_HORIZONTAL_RESOLUTION 0x3090
#define EGL_VERTICAL_RESOLUTION 0x3091
#define EGL_PIXEL_ASPECT_RATIO 0x3092
#define EGL_SWAP_BEHAVIOR 0x3093
#define EGL_MULTISAMPLE_RESOLVE 0x3099
/* EGL_RENDER_BUFFER values / BindTexImage / ReleaseTexImage buffer targets */
#define EGL_BACK_BUFFER 0x3084
#define EGL_SINGLE_BUFFER 0x3085
/* OpenVG color spaces */
#define EGL_VG_COLORSPACE_sRGB 0x3089 /* EGL_VG_COLORSPACE value */
#define EGL_VG_COLORSPACE_LINEAR 0x308A /* EGL_VG_COLORSPACE value */
/* OpenVG alpha formats */
#define EGL_VG_ALPHA_FORMAT_NONPRE 0x308B /* EGL_ALPHA_FORMAT value */
#define EGL_VG_ALPHA_FORMAT_PRE 0x308C /* EGL_ALPHA_FORMAT value */
/* Constant scale factor by which fractional display resolutions &
* aspect ratio are scaled when queried as integer values.
*/
#define EGL_DISPLAY_SCALING 10000
/* Unknown display resolution/aspect ratio */
#define EGL_UNKNOWN ((EGLint)-1)
/* Back buffer swap behaviors */
#define EGL_BUFFER_PRESERVED 0x3094 /* EGL_SWAP_BEHAVIOR value */
#define EGL_BUFFER_DESTROYED 0x3095 /* EGL_SWAP_BEHAVIOR value */
/* CreatePbufferFromClientBuffer buffer types */
#define EGL_OPENVG_IMAGE 0x3096
/* QueryContext targets */
#define EGL_CONTEXT_CLIENT_TYPE 0x3097
/* CreateContext attributes */
#define EGL_CONTEXT_CLIENT_VERSION 0x3098
/* Multisample resolution behaviors */
#define EGL_MULTISAMPLE_RESOLVE_DEFAULT 0x309A /* EGL_MULTISAMPLE_RESOLVE value */
#define EGL_MULTISAMPLE_RESOLVE_BOX 0x309B /* EGL_MULTISAMPLE_RESOLVE value */
/* BindAPI/QueryAPI targets */
#define EGL_OPENGL_ES_API 0x30A0
#define EGL_OPENVG_API 0x30A1
#define EGL_OPENGL_API 0x30A2
/* GetCurrentSurface targets */
#define EGL_DRAW 0x3059
#define EGL_READ 0x305A
/* WaitNative engines */
#define EGL_CORE_NATIVE_ENGINE 0x305B
/* EGL 1.2 tokens renamed for consistency in EGL 1.3 */
#define EGL_COLORSPACE EGL_VG_COLORSPACE
#define EGL_ALPHA_FORMAT EGL_VG_ALPHA_FORMAT
#define EGL_COLORSPACE_sRGB EGL_VG_COLORSPACE_sRGB
#define EGL_COLORSPACE_LINEAR EGL_VG_COLORSPACE_LINEAR
#define EGL_ALPHA_FORMAT_NONPRE EGL_VG_ALPHA_FORMAT_NONPRE
#define EGL_ALPHA_FORMAT_PRE EGL_VG_ALPHA_FORMAT_PRE
/* EGL extensions must request enum blocks from the Khronos
* API Registrar, who maintains the enumerant registry. Submit
* a bug in Khronos Bugzilla against task "Registry".
*/egl函数
/* EGL Functions */
EGLAPI EGLint EGLAPIENTRY eglGetError(void);
EGLAPI EGLDisplay EGLAPIENTRY eglGetDisplay(EGLNativeDisplayType display_id);
EGLAPI EGLBoolean EGLAPIENTRY eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor);
EGLAPI EGLBoolean EGLAPIENTRY eglTerminate(EGLDisplay dpy);
EGLAPI const char * EGLAPIENTRY eglQueryString(EGLDisplay dpy, EGLint name);
EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigs(EGLDisplay dpy, EGLConfig *configs,
EGLint config_size, EGLint *num_config);
EGLAPI EGLBoolean EGLAPIENTRY eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list,
EGLConfig *configs, EGLint config_size,
EGLint *num_config);
EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value);
EGLAPI EGLSurface EGLAPIENTRY eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
EGLNativeWindowType win,
const EGLint *attrib_list);
EGLAPI EGLSurface EGLAPIENTRY eglCreatePbufferSurface(EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list);
EGLAPI EGLSurface EGLAPIENTRY eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
EGLNativePixmapType pixmap,
const EGLint *attrib_list);
EGLAPI EGLBoolean EGLAPIENTRY eglDestroySurface(EGLDisplay dpy, EGLSurface surface);
EGLAPI EGLBoolean EGLAPIENTRY eglQuerySurface(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint *value);
EGLAPI EGLBoolean EGLAPIENTRY eglBindAPI(EGLenum api);
EGLAPI EGLenum EGLAPIENTRY eglQueryAPI(void);
EGLAPI EGLBoolean EGLAPIENTRY eglWaitClient(void);
EGLAPI EGLBoolean EGLAPIENTRY eglReleaseThread(void);
EGLAPI EGLSurface EGLAPIENTRY eglCreatePbufferFromClientBuffer(
EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
EGLConfig config, const EGLint *attrib_list);
EGLAPI EGLBoolean EGLAPIENTRY eglSurfaceAttrib(EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint value);
EGLAPI EGLBoolean EGLAPIENTRY eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
EGLAPI EGLBoolean EGLAPIENTRY eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
EGLAPI EGLBoolean EGLAPIENTRY eglSwapInterval(EGLDisplay dpy, EGLint interval);
EGLAPI EGLContext EGLAPIENTRY eglCreateContext(EGLDisplay dpy, EGLConfig config,
EGLContext share_context,
const EGLint *attrib_list);
EGLAPI EGLBoolean EGLAPIENTRY eglDestroyContext(EGLDisplay dpy, EGLContext ctx);
EGLAPI EGLBoolean EGLAPIENTRY eglMakeCurrent(EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx);
EGLAPI EGLContext EGLAPIENTRY eglGetCurrentContext(void);
EGLAPI EGLSurface EGLAPIENTRY eglGetCurrentSurface(EGLint readdraw);
EGLAPI EGLDisplay EGLAPIENTRY eglGetCurrentDisplay(void);
EGLAPI EGLBoolean EGLAPIENTRY eglQueryContext(EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value);
EGLAPI EGLBoolean EGLAPIENTRY eglWaitGL(void);
EGLAPI EGLBoolean EGLAPIENTRY eglWaitNative(EGLint engine);
EGLAPI EGLBoolean EGLAPIENTRY eglSwapBuffers(EGLDisplay dpy, EGLSurface surface);
EGLAPI EGLBoolean EGLAPIENTRY eglCopyBuffers(EGLDisplay dpy, EGLSurface surface,
EGLNativePixmapType target);
/* This is a generic function pointer type, whose name indicates it must
* be cast to the proper type *and calling convention* before use.
*/
typedef void (*__eglMustCastToProperFunctionPointerType)(void);
/* Now, define eglGetProcAddress using the generic function ptr. type */
EGLAPI __eglMustCastToProperFunctionPointerType EGLAPIENTRY
eglGetProcAddress(const char *procname);
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