Remove third_party/golang.org/x/mobile as it is no longer used with Go 1.5.

third_party/go/src/golang.org/x/mobile/gl/gl.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.
-
-// +build linux darwin
-// +build !gldebug
-
-package gl
-
-// TODO(crawshaw): build on more host platforms (makes it easier to gobind).
-// TODO(crawshaw): expand to cover OpenGL ES 3.
-// TODO(crawshaw): should functions on specific types become methods? E.g.
-//                      func (t Texture) Bind(target Enum)
-//                 this seems natural in Go, but moves us slightly
-//                 further away from the underlying OpenGL spec.
-
-/*
-#include <stdlib.h>
-
-#ifdef os_linux
-#include <GLES2/gl2.h>
-#endif
-#ifdef os_darwin_arm
-#include <OpenGLES/ES2/glext.h>
-#endif
-#ifdef os_darwin_amd64
-#include <OpenGL/gl3.h>
-#endif
-*/
-import "C"
-
-import "unsafe"
-
-// ActiveTexture sets the active texture unit.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glActiveTexture.xhtml
-func ActiveTexture(texture Enum) {
-        C.glActiveTexture(texture.c())
-}
-
-// AttachShader attaches a shader to a program.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glAttachShader.xhtml
-func AttachShader(p Program, s Shader) {
-        C.glAttachShader(p.c(), s.c())
-}
-
-// BindAttribLocation binds a vertex attribute index with a named
-// variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindAttribLocation.xhtml
-func BindAttribLocation(p Program, a Attrib, name string) {
-        str := unsafe.Pointer(C.CString(name))
-        defer C.free(str)
-        C.glBindAttribLocation(p.c(), a.c(), (*C.GLchar)(str))
-}
-
-// BindBuffer binds a buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindBuffer.xhtml
-func BindBuffer(target Enum, b Buffer) {
-        C.glBindBuffer(target.c(), b.c())
-}
-
-// BindFramebuffer binds a framebuffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindFramebuffer.xhtml
-func BindFramebuffer(target Enum, fb Framebuffer) {
-        C.glBindFramebuffer(target.c(), fb.c())
-}
-
-// BindRenderbuffer binds a render buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindRenderbuffer.xhtml
-func BindRenderbuffer(target Enum, rb Renderbuffer) {
-        C.glBindRenderbuffer(target.c(), rb.c())
-}
-
-// BindTexture binds a texture.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBindTexture.xhtml
-func BindTexture(target Enum, t Texture) {
-        C.glBindTexture(target.c(), t.c())
-}
-
-// BlendColor sets the blend color.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendColor.xhtml
-func BlendColor(red, green, blue, alpha float32) {
-        blendColor(red, green, blue, alpha)
-}
-
-// BlendEquation sets both RGB and alpha blend equations.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendEquation.xhtml
-func BlendEquation(mode Enum) {
-        C.glBlendEquation(mode.c())
-}
-
-// BlendEquationSeparate sets RGB and alpha blend equations separately.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendEquationSeparate.xhtml
-func BlendEquationSeparate(modeRGB, modeAlpha Enum) {
-        C.glBlendEquationSeparate(modeRGB.c(), modeAlpha.c())
-}
-
-// BlendFunc sets the pixel blending factors.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendFunc.xhtml
-func BlendFunc(sfactor, dfactor Enum) {
-        C.glBlendFunc(sfactor.c(), dfactor.c())
-}
-
-// BlendFunc sets the pixel RGB and alpha blending factors separately.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBlendFuncSeparate.xhtml
-func BlendFuncSeparate(sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha Enum) {
-        C.glBlendFuncSeparate(sfactorRGB.c(), dfactorRGB.c(), sfactorAlpha.c(), dfactorAlpha.c())
-}
-
-// BufferData creates a new data store for the bound buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferData.xhtml
-func BufferData(target Enum, usage Enum, src []byte) {
-        C.glBufferData(target.c(), C.GLsizeiptr(len(src)), unsafe.Pointer(&src[0]), usage.c())
-}
-
-// BufferInit creates a new unitialized data store for the bound buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferData.xhtml
-func BufferInit(target Enum, size int, usage Enum) {
-        C.glBufferData(target.c(), C.GLsizeiptr(size), nil, usage.c())
-}
-
-// BufferSubData sets some of data in the bound buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glBufferSubData.xhtml
-func BufferSubData(target Enum, offset int, data []byte) {
-        C.glBufferSubData(target.c(), C.GLintptr(offset), C.GLsizeiptr(len(data)), unsafe.Pointer(&data[0]))
-}
-
-// CheckFramebufferStatus reports the completeness status of the
-// active framebuffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCheckFramebufferStatus.xhtml
-func CheckFramebufferStatus(target Enum) Enum {
-        return Enum(C.glCheckFramebufferStatus(target.c()))
-}
-
-// Clear clears the window.
-//
-// The behavior of Clear is influenced by the pixel ownership test,
-// the scissor test, dithering, and the buffer writemasks.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glClear.xhtml
-func Clear(mask Enum) {
-        C.glClear(C.GLbitfield(mask))
-}
-
-// ClearColor specifies the RGBA values used to clear color buffers.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearColor.xhtml
-func ClearColor(red, green, blue, alpha float32) {
-        clearColor(red, green, blue, alpha)
-}
-
-// ClearDepthf sets the depth value used to clear the depth buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearDepthf.xhtml
-func ClearDepthf(d float32) {
-        clearDepthf(d)
-}
-
-// ClearStencil sets the index used to clear the stencil buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glClearStencil.xhtml
-func ClearStencil(s int) {
-        C.glClearStencil(C.GLint(s))
-}
-
-// ColorMask specifies whether color components in the framebuffer
-// can be written.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glColorMask.xhtml
-func ColorMask(red, green, blue, alpha bool) {
-        C.glColorMask(glBoolean(red), glBoolean(green), glBoolean(blue), glBoolean(alpha))
-}
-
-// CompileShader compiles the source code of s.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompileShader.xhtml
-func CompileShader(s Shader) {
-        C.glCompileShader(s.c())
-}
-
-// CompressedTexImage2D writes a compressed 2D texture.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompressedTexImage2D.xhtml
-func CompressedTexImage2D(target Enum, level int, internalformat Enum, width, height, border int, data []byte) {
-        C.glCompressedTexImage2D(target.c(), C.GLint(level), internalformat.c(), C.GLsizei(width), C.GLsizei(height), C.GLint(border), C.GLsizei(len(data)), unsafe.Pointer(&data[0]))
-}
-
-// CompressedTexSubImage2D writes a subregion of a compressed 2D texture.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCompressedTexSubImage2D.xhtml
-func CompressedTexSubImage2D(target Enum, level, xoffset, yoffset, width, height int, format Enum, data []byte) {
-        C.glCompressedTexSubImage2D(target.c(), C.GLint(level), C.GLint(xoffset), C.GLint(yoffset), C.GLsizei(width), C.GLsizei(height), format.c(), C.GLsizei(len(data)), unsafe.Pointer(&data[0]))
-}
-
-// CopyTexImage2D writes a 2D texture from the current framebuffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCopyTexImage2D.xhtml
-func CopyTexImage2D(target Enum, level int, internalformat Enum, x, y, width, height, border int) {
-        C.glCopyTexImage2D(target.c(), C.GLint(level), internalformat.c(), C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height), C.GLint(border))
-}
-
-// CopyTexSubImage2D writes a 2D texture subregion from the
-// current framebuffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCopyTexSubImage2D.xhtml
-func CopyTexSubImage2D(target Enum, level, xoffset, yoffset, x, y, width, height int) {
-        C.glCopyTexSubImage2D(target.c(), C.GLint(level), C.GLint(xoffset), C.GLint(yoffset), C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height))
-}
-
-// CreateProgram creates a new empty program object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCreateProgram.xhtml
-func CreateProgram() Program {
-        return Program{Value: uint32(C.glCreateProgram())}
-}
-
-// CreateShader creates a new empty shader object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCreateShader.xhtml
-func CreateShader(ty Enum) Shader {
-        return Shader{Value: uint32(C.glCreateShader(ty.c()))}
-}
-
-// CullFace specifies which polygons are candidates for culling.
-//
-// Valid modes: FRONT, BACK, FRONT_AND_BACK.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glCullFace.xhtml
-func CullFace(mode Enum) {
-        C.glCullFace(mode.c())
-}
-
-// DeleteBuffer deletes the given buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteBuffers.xhtml
-func DeleteBuffer(v Buffer) {
-        C.glDeleteBuffers(1, (*C.GLuint)(&v.Value))
-}
-
-// DeleteFramebuffer deletes the given framebuffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteFramebuffers.xhtml
-func DeleteFramebuffer(v Framebuffer) {
-        C.glDeleteFramebuffers(1, (*C.GLuint)(&v.Value))
-}
-
-// DeleteProgram deletes the given program object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteProgram.xhtml
-func DeleteProgram(p Program) {
-        C.glDeleteProgram(p.c())
-}
-
-// DeleteRenderbuffer deletes the given render buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteRenderbuffers.xhtml
-func DeleteRenderbuffer(v Renderbuffer) {
-        C.glDeleteRenderbuffers(1, (*C.GLuint)(&v.Value))
-}
-
-// DeleteShader deletes shader s.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteShader.xhtml
-func DeleteShader(s Shader) {
-        C.glDeleteShader(s.c())
-}
-
-// DeleteTexture deletes the given texture object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDeleteTextures.xhtml
-func DeleteTexture(v Texture) {
-        C.glDeleteTextures(1, (*C.GLuint)(&v.Value))
-}
-
-// DepthFunc sets the function used for depth buffer comparisons.
-//
-// Valid fn values:
-//      NEVER
-//      LESS
-//      EQUAL
-//      LEQUAL
-//      GREATER
-//      NOTEQUAL
-//      GEQUAL
-//      ALWAYS
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthFunc.xhtml
-func DepthFunc(fn Enum) {
-        C.glDepthFunc(fn.c())
-}
-
-// DepthMask sets the depth buffer enabled for writing.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthMask.xhtml
-func DepthMask(flag bool) {
-        C.glDepthMask(glBoolean(flag))
-}
-
-// DepthRangef sets the mapping from normalized device coordinates to
-// window coordinates.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDepthRangef.xhtml
-func DepthRangef(n, f float32) {
-        depthRangef(n, f)
-}
-
-// DetachShader detaches the shader s from the program p.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDetachShader.xhtml
-func DetachShader(p Program, s Shader) {
-        C.glDetachShader(p.c(), s.c())
-}
-
-// Disable disables various GL capabilities.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDisable.xhtml
-func Disable(cap Enum) {
-        C.glDisable(cap.c())
-}
-
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDisableVertexAttribArray.xhtml
-func DisableVertexAttribArray(index Attrib) {
-        C.glDisableVertexAttribArray(index.c())
-}
-
-// DrawArrays renders geometric primitives from the bound data.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDrawArrays.xhtml
-func DrawArrays(mode Enum, first, count int) {
-        C.glDrawArrays(mode.c(), C.GLint(first), C.GLsizei(count))
-}
-
-// DrawElements renders primitives from a bound buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glDrawElements.xhtml
-func DrawElements(mode, ty Enum, offset, count int) {
-        C.glDrawElements(mode.c(), C.GLsizei(count), ty.c(), unsafe.Pointer(uintptr(offset)))
-}
-
-// TODO(crawshaw): consider DrawElements8 / DrawElements16 / DrawElements32
-
-// Enable enables various GL capabilities.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glEnable.xhtml
-func Enable(cap Enum) {
-        C.glEnable(cap.c())
-}
-
-// EnableVertexAttribArray enables a vertex attribute array.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glEnableVertexAttribArray.xhtml
-func EnableVertexAttribArray(index Attrib) {
-        C.glEnableVertexAttribArray(index.c())
-}
-
-// Finish blocks until the effects of all previously called GL
-// commands are complete.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glFinish.xhtml
-func Finish() {
-        C.glFinish()
-}
-
-// Flush empties all buffers. It does not block.
-//
-// An OpenGL implementation may buffer network communication,
-// the command stream, or data inside the graphics accelerator.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glFlush.xhtml
-func Flush() {
-        C.glFlush()
-}
-
-// FramebufferRenderbuffer attaches rb to the current frame buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glFramebufferRenderbuffer.xhtml
-func FramebufferRenderbuffer(target, attachment, rbTarget Enum, rb Renderbuffer) {
-        C.glFramebufferRenderbuffer(target.c(), attachment.c(), rbTarget.c(), rb.c())
-}
-
-// FramebufferTexture2D attaches the t to the current frame buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glFramebufferTexture2D.xhtml
-func FramebufferTexture2D(target, attachment, texTarget Enum, t Texture, level int) {
-        C.glFramebufferTexture2D(target.c(), attachment.c(), texTarget.c(), t.c(), C.GLint(level))
-}
-
-// FrontFace defines which polygons are front-facing.
-//
-// Valid modes: CW, CCW.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glFrontFace.xhtml
-func FrontFace(mode Enum) {
-        C.glFrontFace(mode.c())
-}
-
-// GenBuffer creates a buffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenBuffers.xhtml
-func GenBuffer() Buffer {
-        var b Buffer
-        C.glGenBuffers(1, (*C.GLuint)(&b.Value))
-        return b
-}
-
-// GenerateMipmap generates mipmaps for the current texture.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenerateMipmap.xhtml
-func GenerateMipmap(target Enum) {
-        C.glGenerateMipmap(target.c())
-}
-
-// GenFramebuffer creates a framebuffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenFramebuffers.xhtml
-func GenFramebuffer() Framebuffer {
-        var b Framebuffer
-        C.glGenFramebuffers(1, (*C.GLuint)(&b.Value))
-        return b
-}
-
-// GenRenderbuffer create a renderbuffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenRenderbuffers.xhtml
-func GenRenderbuffer() Renderbuffer {
-        var b Renderbuffer
-        C.glGenRenderbuffers(1, (*C.GLuint)(&b.Value))
-        return b
-}
-
-// GenTexture creates a texture object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGenTextures.xhtml
-func GenTexture() Texture {
-        var t Texture
-        C.glGenTextures(1, (*C.GLuint)(&t.Value))
-        return t
-}
-
-// GetActiveAttrib returns details about an attribute variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetActiveAttrib.xhtml
-func GetActiveAttrib(p Program, a Attrib) (name string, size int, ty Enum) {
-        bufSize := GetProgrami(p, ACTIVE_ATTRIBUTE_MAX_LENGTH)
-        buf := C.malloc(C.size_t(bufSize))
-        defer C.free(buf)
-
-        var cSize C.GLint
-        var cType C.GLenum
-        C.glGetActiveAttrib(p.c(), a.c(), C.GLsizei(bufSize), nil, &cSize, &cType, (*C.GLchar)(buf))
-        return C.GoString((*C.char)(buf)), int(cSize), Enum(cType)
-}
-
-// GetActiveUniform returns details about an active uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetActiveUniform.xhtml
-func GetActiveUniform(p Program, u Uniform) (name string, size int, ty Enum) {
-        bufSize := GetProgrami(p, ACTIVE_UNIFORM_MAX_LENGTH)
-        buf := C.malloc(C.size_t(bufSize))
-        defer C.free(buf)
-
-        var cSize C.GLint
-        var cType C.GLenum
-
-        C.glGetActiveUniform(p.c(), C.GLuint(u.Value), C.GLsizei(bufSize), nil, &cSize, &cType, (*C.GLchar)(buf))
-        return C.GoString((*C.char)(buf)), int(cSize), Enum(cType)
-}
-
-// GetAttachedShaders returns the shader objects attached to program p.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetAttachedShaders.xhtml
-func GetAttachedShaders(p Program) []Shader {
-        shadersLen := GetProgrami(p, ATTACHED_SHADERS)
-        var n C.GLsizei
-        buf := make([]C.GLuint, shadersLen)
-        C.glGetAttachedShaders(p.c(), C.GLsizei(shadersLen), &n, &buf[0])
-        buf = buf[:int(n)]
-        shaders := make([]Shader, len(buf))
-        for i, s := range buf {
-                shaders[i] = Shader{Value: uint32(s)}
-        }
-        return shaders
-}
-
-// GetAttribLocation finds a program attribute variable by name.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetAttribLocation.xhtml
-func GetAttribLocation(p Program, name string) Attrib {
-        str := unsafe.Pointer(C.CString(name))
-        defer C.free(str)
-        return Attrib{Value: uint(C.glGetAttribLocation(p.c(), (*C.GLchar)(str)))}
-}
-
-// GetBooleanv returns the boolean values of parameter pname.
-//
-// Many boolean parameters can be queried more easily using IsEnabled.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
-func GetBooleanv(dst []bool, pname Enum) {
-        buf := make([]C.GLboolean, len(dst))
-        C.glGetBooleanv(pname.c(), &buf[0])
-        for i, v := range buf {
-                dst[i] = v != 0
-        }
-}
-
-// GetFloatv returns the float values of parameter pname.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
-func GetFloatv(dst []float32, pname Enum) {
-        C.glGetFloatv(pname.c(), (*C.GLfloat)(&dst[0]))
-}
-
-// GetIntegerv returns the int values of parameter pname.
-//
-// Single values may be queried more easily using GetInteger.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
-func GetIntegerv(pname Enum, data []int32) {
-        buf := make([]C.GLint, len(data))
-        C.glGetIntegerv(pname.c(), &buf[0])
-        for i, v := range buf {
-                data[i] = int32(v)
-        }
-}
-
-// GetInteger returns the int value of parameter pname.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGet.xhtml
-func GetInteger(pname Enum) int {
-        var v C.GLint
-        C.glGetIntegerv(pname.c(), &v)
-        return int(v)
-}
-
-// GetBufferParameteri returns a parameter for the active buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetBufferParameteriv.xhtml
-func GetBufferParameteri(target, pname Enum) int {
-        var params C.GLint
-        C.glGetBufferParameteriv(target.c(), pname.c(), &params)
-        return int(params)
-}
-
-// GetError returns the next error.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetError.xhtml
-func GetError() Enum {
-        return Enum(C.glGetError())
-}
-
-// GetFramebufferAttachmentParameteri returns attachment parameters
-// for the active framebuffer object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetFramebufferAttachmentParameteriv.xhtml
-func GetFramebufferAttachmentParameteri(target, attachment, pname Enum) int {
-        var params C.GLint
-        C.glGetFramebufferAttachmentParameteriv(target.c(), attachment.c(), pname.c(), &params)
-        return int(params)
-}
-
-// GetProgrami returns a parameter value for a program.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetProgramiv.xhtml
-func GetProgrami(p Program, pname Enum) int {
-        var params C.GLint
-        C.glGetProgramiv(p.c(), pname.c(), &params)
-        return int(params)
-}
-
-// GetProgramInfoLog returns the information log for a program.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetProgramInfoLog.xhtml
-func GetProgramInfoLog(p Program) string {
-        infoLen := GetProgrami(p, INFO_LOG_LENGTH)
-        buf := C.malloc(C.size_t(infoLen))
-        C.free(buf)
-        C.glGetProgramInfoLog(p.c(), C.GLsizei(infoLen), nil, (*C.GLchar)(buf))
-        return C.GoString((*C.char)(buf))
-}
-
-// GetRenderbufferParameteri returns a parameter value for a render buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetRenderbufferParameteriv.xhtml
-func GetRenderbufferParameteri(target, pname Enum) int {
-        var params C.GLint
-        C.glGetRenderbufferParameteriv(target.c(), pname.c(), &params)
-        return int(params)
-}
-
-// GetRenderbufferParameteri returns a parameter value for a shader.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderiv.xhtml
-func GetShaderi(s Shader, pname Enum) int {
-        var params C.GLint
-        C.glGetShaderiv(s.c(), pname.c(), &params)
-        return int(params)
-}
-
-// GetShaderInfoLog returns the information log for a shader.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderInfoLog.xhtml
-func GetShaderInfoLog(s Shader) string {
-        infoLen := GetShaderi(s, INFO_LOG_LENGTH)
-        buf := C.malloc(C.size_t(infoLen))
-        defer C.free(buf)
-        C.glGetShaderInfoLog(s.c(), C.GLsizei(infoLen), nil, (*C.GLchar)(buf))
-        return C.GoString((*C.char)(buf))
-}
-
-// GetShaderPrecisionFormat returns range and precision limits for
-// shader types.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderPrecisionFormat.xhtml
-func GetShaderPrecisionFormat(shadertype, precisiontype Enum) (rangeLow, rangeHigh, precision int) {
-        const glintSize = 4
-        var cRange [2]C.GLint
-        var cPrecision C.GLint
-
-        C.glGetShaderPrecisionFormat(shadertype.c(), precisiontype.c(), &cRange[0], &cPrecision)
-        return int(cRange[0]), int(cRange[1]), int(cPrecision)
-}
-
-// GetShaderSource returns source code of shader s.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetShaderSource.xhtml
-func GetShaderSource(s Shader) string {
-        sourceLen := GetShaderi(s, SHADER_SOURCE_LENGTH)
-        if sourceLen == 0 {
-                return ""
-        }
-        buf := C.malloc(C.size_t(sourceLen))
-        defer C.free(buf)
-        C.glGetShaderSource(s.c(), C.GLsizei(sourceLen), nil, (*C.GLchar)(buf))
-        return C.GoString((*C.char)(buf))
-}
-
-// GetString reports current GL state.
-//
-// Valid name values:
-//      EXTENSIONS
-//      RENDERER
-//      SHADING_LANGUAGE_VERSION
-//      VENDOR
-//      VERSION
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetString.xhtml
-func GetString(name Enum) string {
-        // Bounce through unsafe.Pointer, because on some platforms
-        // GetString returns an *unsigned char which doesn't convert.
-        return C.GoString((*C.char)((unsafe.Pointer)(C.glGetString(name.c()))))
-}
-
-// GetTexParameterfv returns the float values of a texture parameter.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetTexParameter.xhtml
-func GetTexParameterfv(dst []float32, target, pname Enum) {
-        C.glGetTexParameterfv(target.c(), pname.c(), (*C.GLfloat)(&dst[0]))
-}
-
-// GetTexParameteriv returns the int values of a texture parameter.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetTexParameter.xhtml
-func GetTexParameteriv(dst []int32, target, pname Enum) {
-        C.glGetTexParameteriv(target.c(), pname.c(), (*C.GLint)(&dst[0]))
-}
-
-// GetUniformfv returns the float values of a uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniform.xhtml
-func GetUniformfv(dst []float32, src Uniform, p Program) {
-        C.glGetUniformfv(p.c(), src.c(), (*C.GLfloat)(&dst[0]))
-}
-
-// GetUniformiv returns the float values of a uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniform.xhtml
-func GetUniformiv(dst []int32, src Uniform, p Program) {
-        C.glGetUniformiv(p.c(), src.c(), (*C.GLint)(&dst[0]))
-}
-
-// GetUniformLocation returns the location of uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetUniformLocation.xhtml
-func GetUniformLocation(p Program, name string) Uniform {
-        str := C.CString(name)
-        defer C.free((unsafe.Pointer)(str))
-        return Uniform{Value: int32(C.glGetUniformLocation(p.c(), (*C.GLchar)(str)))}
-}
-
-// GetVertexAttribf reads the float value of a vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
-func GetVertexAttribf(src Attrib, pname Enum) float32 {
-        var params C.GLfloat
-        C.glGetVertexAttribfv(src.c(), pname.c(), &params)
-        return float32(params)
-}
-
-// GetVertexAttribfv reads float values of a vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
-func GetVertexAttribfv(dst []float32, src Attrib, pname Enum) {
-        C.glGetVertexAttribfv(src.c(), pname.c(), (*C.GLfloat)(&dst[0]))
-}
-
-// GetVertexAttribi reads the int value of a vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
-func GetVertexAttribi(src Attrib, pname Enum) int32 {
-        var params C.GLint
-        C.glGetVertexAttribiv(src.c(), pname.c(), &params)
-        return int32(params)
-}
-
-// GetVertexAttribiv reads int values of a vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glGetVertexAttrib.xhtml
-func GetVertexAttribiv(dst []int32, src Attrib, pname Enum) {
-        C.glGetVertexAttribiv(src.c(), pname.c(), (*C.GLint)(&dst[0]))
-}
-
-// TODO(crawshaw): glGetVertexAttribPointerv
-
-// Hint sets implementation-specific modes.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glHint.xhtml
-func Hint(target, mode Enum) {
-        C.glHint(target.c(), mode.c())
-}
-
-// IsBuffer reports if b is a valid buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsBuffer.xhtml
-func IsBuffer(b Buffer) bool {
-        return C.glIsBuffer(b.c()) != 0
-}
-
-// IsEnabled reports if cap is an enabled capability.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsEnabled.xhtml
-func IsEnabled(cap Enum) bool {
-        return C.glIsEnabled(cap.c()) != 0
-}
-
-// IsFramebuffer reports if fb is a valid frame buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsFramebuffer.xhtml
-func IsFramebuffer(fb Framebuffer) bool {
-        return C.glIsFramebuffer(fb.c()) != 0
-}
-
-// IsProgram reports if p is a valid program object.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsProgram.xhtml
-func IsProgram(p Program) bool {
-        return C.glIsProgram(p.c()) != 0
-}
-
-// IsRenderbuffer reports if rb is a valid render buffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsRenderbuffer.xhtml
-func IsRenderbuffer(rb Renderbuffer) bool {
-        return C.glIsRenderbuffer(rb.c()) != 0
-}
-
-// IsShader reports if s is valid shader.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsShader.xhtml
-func IsShader(s Shader) bool {
-        return C.glIsShader(s.c()) != 0
-}
-
-// IsTexture reports if t is a valid texture.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glIsTexture.xhtml
-func IsTexture(t Texture) bool {
-        return C.glIsTexture(t.c()) != 0
-}
-
-// LineWidth specifies the width of lines.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glLineWidth.xhtml
-func LineWidth(width float32) {
-        C.glLineWidth(C.GLfloat(width))
-}
-
-// LinkProgram links the specified program.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glLinkProgram.xhtml
-func LinkProgram(p Program) {
-        C.glLinkProgram(p.c())
-}
-
-// PixelStorei sets pixel storage parameters.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glPixelStorei.xhtml
-func PixelStorei(pname Enum, param int32) {
-        C.glPixelStorei(pname.c(), C.GLint(param))
-}
-
-// PolygonOffset sets the scaling factors for depth offsets.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glPolygonOffset.xhtml
-func PolygonOffset(factor, units float32) {
-        C.glPolygonOffset(C.GLfloat(factor), C.GLfloat(units))
-}
-
-// ReadPixels returns pixel data from a buffer.
-//
-// In GLES 3, the source buffer is controlled with ReadBuffer.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glReadPixels.xhtml
-func ReadPixels(dst []byte, x, y, width, height int, format, ty Enum) {
-        // TODO(crawshaw): support PIXEL_PACK_BUFFER in GLES3, uses offset.
-        C.glReadPixels(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height), format.c(), ty.c(), unsafe.Pointer(&dst[0]))
-}
-
-// ReleaseShaderCompiler frees resources allocated by the shader compiler.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glReleaseShaderCompiler.xhtml
-func ReleaseShaderCompiler() {
-        C.glReleaseShaderCompiler()
-}
-
-// RenderbufferStorage establishes the data storage, format, and
-// dimensions of a renderbuffer object's image.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glRenderbufferStorage.xhtml
-func RenderbufferStorage(target, internalFormat Enum, width, height int) {
-        C.glRenderbufferStorage(target.c(), internalFormat.c(), C.GLsizei(width), C.GLsizei(height))
-}
-
-// SampleCoverage sets multisample coverage parameters.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glSampleCoverage.xhtml
-func SampleCoverage(value float32, invert bool) {
-        sampleCoverage(value, invert)
-}
-
-// Scissor defines the scissor box rectangle, in window coordinates.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glScissor.xhtml
-func Scissor(x, y, width, height int32) {
-        C.glScissor(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height))
-}
-
-// TODO(crawshaw): ShaderBinary
-
-// ShaderSource sets the source code of s to the given source code.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glShaderSource.xhtml
-func ShaderSource(s Shader, src string) {
-        str := (*C.GLchar)(C.CString(src))
-        defer C.free(unsafe.Pointer(str))
-        C.glShaderSource(s.c(), 1, &str, nil)
-}
-
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilFunc.xhtml
-func StencilFunc(fn Enum, ref int, mask uint32) {
-        C.glStencilFunc(fn.c(), C.GLint(ref), C.GLuint(mask))
-}
-
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilFuncSeparate.xhtml
-func StencilFuncSeparate(face, fn Enum, ref int, mask uint32) {
-        C.glStencilFuncSeparate(face.c(), fn.c(), C.GLint(ref), C.GLuint(mask))
-}
-
-// StencilMask controls the writing of bits in the stencil planes.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilMask.xhtml
-func StencilMask(mask uint32) {
-        C.glStencilMask(C.GLuint(mask))
-}
-
-// StencilMaskSeparate controls the writing of bits in the stencil planes.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilMaskSeparate.xhtml
-func StencilMaskSeparate(face Enum, mask uint32) {
-        C.glStencilMaskSeparate(face.c(), C.GLuint(mask))
-}
-
-// StencilOp sets front and back stencil test actions.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilOp.xhtml
-func StencilOp(fail, zfail, zpass Enum) {
-        C.glStencilOp(fail.c(), zfail.c(), zpass.c())
-}
-
-// StencilOpSeparate sets front or back stencil tests.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glStencilOpSeparate.xhtml
-func StencilOpSeparate(face, sfail, dpfail, dppass Enum) {
-        C.glStencilOpSeparate(face.c(), sfail.c(), dpfail.c(), dppass.c())
-}
-
-// TexImage2D writes a 2D texture image.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexImage2D.xhtml
-func TexImage2D(target Enum, level int, width, height int, format Enum, ty Enum, data []byte) {
-        // TODO(crawshaw): GLES3 offset for PIXEL_UNPACK_BUFFER and PIXEL_PACK_BUFFER.
-        p := unsafe.Pointer(nil)
-        if len(data) > 0 {
-                p = unsafe.Pointer(&data[0])
-        }
-        C.glTexImage2D(target.c(), C.GLint(level), C.GLint(format), C.GLsizei(width), C.GLsizei(height), 0, format.c(), ty.c(), p)
-}
-
-// TexSubImage2D writes a subregion of a 2D texture image.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexSubImage2D.xhtml
-func TexSubImage2D(target Enum, level int, x, y, width, height int, format, ty Enum, data []byte) {
-        // TODO(crawshaw): GLES3 offset for PIXEL_UNPACK_BUFFER and PIXEL_PACK_BUFFER.
-        C.glTexSubImage2D(target.c(), C.GLint(level), C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height), format.c(), ty.c(), unsafe.Pointer(&data[0]))
-}
-
-// TexParameterf sets a float texture parameter.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
-func TexParameterf(target, pname Enum, param float32) {
-        C.glTexParameterf(target.c(), pname.c(), C.GLfloat(param))
-}
-
-// TexParameterfv sets a float texture parameter array.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
-func TexParameterfv(target, pname Enum, params []float32) {
-        C.glTexParameterfv(target.c(), pname.c(), (*C.GLfloat)(&params[0]))
-}
-
-// TexParameteri sets an integer texture parameter.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
-func TexParameteri(target, pname Enum, param int) {
-        C.glTexParameteri(target.c(), pname.c(), C.GLint(param))
-}
-
-// TexParameteriv sets an integer texture parameter array.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glTexParameter.xhtml
-func TexParameteriv(target, pname Enum, params []int32) {
-        C.glTexParameteriv(target.c(), pname.c(), (*C.GLint)(&params[0]))
-}
-
-// Uniform1f writes a float uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform1f(dst Uniform, v float32) {
-        C.glUniform1f(dst.c(), C.GLfloat(v))
-}
-
-// Uniform1fv writes a [len(src)]float uniform array.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform1fv(dst Uniform, src []float32) {
-        C.glUniform1fv(dst.c(), C.GLsizei(len(src)), (*C.GLfloat)(&src[0]))
-}
-
-// Uniform1i writes an int uniform variable.
-//
-// Uniform1i and Uniform1iv are the only two functions that may be used
-// to load uniform variables defined as sampler types. Loading samplers
-// with any other function will result in a INVALID_OPERATION error.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform1i(dst Uniform, v int) {
-        C.glUniform1i(dst.c(), C.GLint(v))
-}
-
-// Uniform1iv writes a int uniform array of len(src) elements.
-//
-// Uniform1i and Uniform1iv are the only two functions that may be used
-// to load uniform variables defined as sampler types. Loading samplers
-// with any other function will result in a INVALID_OPERATION error.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform1iv(dst Uniform, src []int32) {
-        C.glUniform1iv(dst.c(), C.GLsizei(len(src)), (*C.GLint)(&src[0]))
-}
-
-// Uniform2f writes a vec2 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform2f(dst Uniform, v0, v1 float32) {
-        C.glUniform2f(dst.c(), C.GLfloat(v0), C.GLfloat(v1))
-}
-
-// Uniform2fv writes a vec2 uniform array of len(src)/2 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform2fv(dst Uniform, src []float32) {
-        C.glUniform2fv(dst.c(), C.GLsizei(len(src)/2), (*C.GLfloat)(&src[0]))
-}
-
-// Uniform2i writes an ivec2 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform2i(dst Uniform, v0, v1 int) {
-        C.glUniform2i(dst.c(), C.GLint(v0), C.GLint(v1))
-}
-
-// Uniform2iv writes an ivec2 uniform array of len(src)/2 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform2iv(dst Uniform, src []int32) {
-        C.glUniform2iv(dst.c(), C.GLsizei(len(src)/2), (*C.GLint)(&src[0]))
-}
-
-// Uniform3f writes a vec3 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform3f(dst Uniform, v0, v1, v2 float32) {
-        C.glUniform3f(dst.c(), C.GLfloat(v0), C.GLfloat(v1), C.GLfloat(v2))
-}
-
-// Uniform3fv writes a vec3 uniform array of len(src)/3 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform3fv(dst Uniform, src []float32) {
-        C.glUniform3fv(dst.c(), C.GLsizei(len(src)/3), (*C.GLfloat)(&src[0]))
-}
-
-// Uniform3i writes an ivec3 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform3i(dst Uniform, v0, v1, v2 int32) {
-        C.glUniform3i(dst.c(), C.GLint(v0), C.GLint(v1), C.GLint(v2))
-}
-
-// Uniform3iv writes an ivec3 uniform array of len(src)/3 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform3iv(dst Uniform, src []int32) {
-        C.glUniform3iv(dst.c(), C.GLsizei(len(src)/3), (*C.GLint)(&src[0]))
-}
-
-// Uniform4f writes a vec4 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform4f(dst Uniform, v0, v1, v2, v3 float32) {
-        C.glUniform4f(dst.c(), C.GLfloat(v0), C.GLfloat(v1), C.GLfloat(v2), C.GLfloat(v3))
-}
-
-// Uniform4fv writes a vec4 uniform array of len(src)/4 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform4fv(dst Uniform, src []float32) {
-        C.glUniform4fv(dst.c(), C.GLsizei(len(src)/4), (*C.GLfloat)(&src[0]))
-}
-
-// Uniform4i writes an ivec4 uniform variable.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform4i(dst Uniform, v0, v1, v2, v3 int32) {
-        C.glUniform4i(dst.c(), C.GLint(v0), C.GLint(v1), C.GLint(v2), C.GLint(v3))
-}
-
-// Uniform4i writes an ivec4 uniform array of len(src)/4 elements.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func Uniform4iv(dst Uniform, src []int32) {
-        C.glUniform4iv(dst.c(), C.GLsizei(len(src)/4), (*C.GLint)(&src[0]))
-}
-
-// UniformMatrix2fv writes 2x2 matrices. Each matrix uses four
-// float32 values, so the number of matrices written is len(src)/4.
-//
-// Each matrix must be supplied in column major order.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func UniformMatrix2fv(dst Uniform, src []float32) {
-        /// OpenGL ES 2 does not support transpose.
-        C.glUniformMatrix2fv(dst.c(), C.GLsizei(len(src)/4), 0, (*C.GLfloat)(&src[0]))
-}
-
-// UniformMatrix3fv writes 3x3 matrices. Each matrix uses nine
-// float32 values, so the number of matrices written is len(src)/9.
-//
-// Each matrix must be supplied in column major order.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func UniformMatrix3fv(dst Uniform, src []float32) {
-        C.glUniformMatrix3fv(dst.c(), C.GLsizei(len(src)/9), 0, (*C.GLfloat)(&src[0]))
-}
-
-// UniformMatrix4fv writes 4x4 matrices. Each matrix uses 16
-// float32 values, so the number of matrices written is len(src)/16.
-//
-// Each matrix must be supplied in column major order.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUniform.xhtml
-func UniformMatrix4fv(dst Uniform, src []float32) {
-        C.glUniformMatrix4fv(dst.c(), C.GLsizei(len(src)/16), 0, (*C.GLfloat)(&src[0]))
-}
-
-// UseProgram sets the active program.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glUseProgram.xhtml
-func UseProgram(p Program) {
-        C.glUseProgram(p.c())
-}
-
-// ValidateProgram checks to see whether the executables contained in
-// program can execute given the current OpenGL state.
-//
-// Typically only used for debugging.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glValidateProgram.xhtml
-func ValidateProgram(p Program) {
-        C.glValidateProgram(p.c())
-}
-
-// VertexAttrib1f writes a float vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib1f(dst Attrib, x float32) {
-        C.glVertexAttrib1f(dst.c(), C.GLfloat(x))
-}
-
-// VertexAttrib1fv writes a float vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib1fv(dst Attrib, src []float32) {
-        C.glVertexAttrib1fv(dst.c(), (*C.GLfloat)(&src[0]))
-}
-
-// VertexAttrib2f writes a vec2 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib2f(dst Attrib, x, y float32) {
-        C.glVertexAttrib2f(dst.c(), C.GLfloat(x), C.GLfloat(y))
-}
-
-// VertexAttrib2fv writes a vec2 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib2fv(dst Attrib, src []float32) {
-        C.glVertexAttrib2fv(dst.c(), (*C.GLfloat)(&src[0]))
-}
-
-// VertexAttrib3f writes a vec3 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib3f(dst Attrib, x, y, z float32) {
-        C.glVertexAttrib3f(dst.c(), C.GLfloat(x), C.GLfloat(y), C.GLfloat(z))
-}
-
-// VertexAttrib3fv writes a vec3 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib3fv(dst Attrib, src []float32) {
-        C.glVertexAttrib3fv(dst.c(), (*C.GLfloat)(&src[0]))
-}
-
-// VertexAttrib4f writes a vec4 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib4f(dst Attrib, x, y, z, w float32) {
-        C.glVertexAttrib4f(dst.c(), C.GLfloat(x), C.GLfloat(y), C.GLfloat(z), C.GLfloat(w))
-}
-
-// VertexAttrib4fv writes a vec4 vertex attribute.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttrib.xhtml
-func VertexAttrib4fv(dst Attrib, src []float32) {
-        C.glVertexAttrib4fv(dst.c(), (*C.GLfloat)(&src[0]))
-}
-
-// VertexAttribPointer uses a bound buffer to define vertex attribute data.
-//
-// Direct use of VertexAttribPointer to load data into OpenGL is not
-// supported via the Go bindings. Instead, use BindBuffer with an
-// ARRAY_BUFFER and then fill it using BufferData.
-//
-// The size argument specifies the number of components per attribute,
-// between 1-4. The stride argument specifies the byte offset between
-// consecutive vertex attributes.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glVertexAttribPointer.xhtml
-func VertexAttribPointer(dst Attrib, size int, ty Enum, normalized bool, stride, offset int) {
-        n := glBoolean(normalized)
-        s := C.GLsizei(stride)
-        C.glVertexAttribPointer(dst.c(), C.GLint(size), ty.c(), n, s, unsafe.Pointer(uintptr(offset)))
-}
-
-// Viewport sets the viewport, an affine transformation that
-// normalizes device coordinates to window coordinates.
-//
-// http://www.khronos.org/opengles/sdk/docs/man3/html/glViewport.xhtml
-func Viewport(x, y, width, height int) {
-        C.glViewport(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height))
-}