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407 lines
20 KiB
Go
407 lines
20 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package glimpl
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import (
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"math"
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"runtime"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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"gioui.org/gpu/gl"
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gunsafe "gioui.org/internal/unsafe"
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)
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var (
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LibGLESv2 = windows.NewLazyDLL("libGLESv2.dll")
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_glActiveTexture = LibGLESv2.NewProc("glActiveTexture")
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_glAttachShader = LibGLESv2.NewProc("glAttachShader")
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_glBeginQuery = LibGLESv2.NewProc("glBeginQuery")
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_glBindAttribLocation = LibGLESv2.NewProc("glBindAttribLocation")
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_glBindBuffer = LibGLESv2.NewProc("glBindBuffer")
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_glBindBufferBase = LibGLESv2.NewProc("glBindBufferBase")
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_glBindFramebuffer = LibGLESv2.NewProc("glBindFramebuffer")
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_glBindRenderbuffer = LibGLESv2.NewProc("glBindRenderbuffer")
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_glBindTexture = LibGLESv2.NewProc("glBindTexture")
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_glBlendEquation = LibGLESv2.NewProc("glBlendEquation")
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_glBlendFunc = LibGLESv2.NewProc("glBlendFunc")
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_glBufferData = LibGLESv2.NewProc("glBufferData")
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_glCheckFramebufferStatus = LibGLESv2.NewProc("glCheckFramebufferStatus")
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_glClear = LibGLESv2.NewProc("glClear")
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_glClearColor = LibGLESv2.NewProc("glClearColor")
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_glClearDepthf = LibGLESv2.NewProc("glClearDepthf")
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_glDeleteQueries = LibGLESv2.NewProc("glDeleteQueries")
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_glCompileShader = LibGLESv2.NewProc("glCompileShader")
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_glGenBuffers = LibGLESv2.NewProc("glGenBuffers")
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_glGenFramebuffers = LibGLESv2.NewProc("glGenFramebuffers")
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_glGetUniformBlockIndex = LibGLESv2.NewProc("glGetUniformBlockIndex")
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_glCreateProgram = LibGLESv2.NewProc("glCreateProgram")
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_glGenRenderbuffers = LibGLESv2.NewProc("glGenRenderbuffers")
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_glCreateShader = LibGLESv2.NewProc("glCreateShader")
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_glGenTextures = LibGLESv2.NewProc("glGenTextures")
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_glDeleteBuffers = LibGLESv2.NewProc("glDeleteBuffers")
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_glDeleteFramebuffers = LibGLESv2.NewProc("glDeleteFramebuffers")
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_glDeleteProgram = LibGLESv2.NewProc("glDeleteProgram")
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_glDeleteShader = LibGLESv2.NewProc("glDeleteShader")
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_glDeleteRenderbuffers = LibGLESv2.NewProc("glDeleteRenderbuffers")
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_glDeleteTextures = LibGLESv2.NewProc("glDeleteTextures")
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_glDepthFunc = LibGLESv2.NewProc("glDepthFunc")
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_glDepthMask = LibGLESv2.NewProc("glDepthMask")
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_glDisableVertexAttribArray = LibGLESv2.NewProc("glDisableVertexAttribArray")
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_glDisable = LibGLESv2.NewProc("glDisable")
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_glDrawArrays = LibGLESv2.NewProc("glDrawArrays")
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_glDrawElements = LibGLESv2.NewProc("glDrawElements")
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_glEnable = LibGLESv2.NewProc("glEnable")
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_glEnableVertexAttribArray = LibGLESv2.NewProc("glEnableVertexAttribArray")
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_glEndQuery = LibGLESv2.NewProc("glEndQuery")
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_glFinish = LibGLESv2.NewProc("glFinish")
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_glFramebufferRenderbuffer = LibGLESv2.NewProc("glFramebufferRenderbuffer")
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_glFramebufferTexture2D = LibGLESv2.NewProc("glFramebufferTexture2D")
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_glGenQueries = LibGLESv2.NewProc("glGenQueries")
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_glGetError = LibGLESv2.NewProc("glGetError")
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_glGetRenderbufferParameteri = LibGLESv2.NewProc("glGetRenderbufferParameteri")
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_glGetFramebufferAttachmentParameteri = LibGLESv2.NewProc("glGetFramebufferAttachmentParameteri")
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_glGetIntegerv = LibGLESv2.NewProc("glGetIntegerv")
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_glGetProgramiv = LibGLESv2.NewProc("glGetProgramiv")
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_glGetProgramInfoLog = LibGLESv2.NewProc("glGetProgramInfoLog")
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_glGetQueryObjectuiv = LibGLESv2.NewProc("glGetQueryObjectuiv")
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_glGetShaderiv = LibGLESv2.NewProc("glGetShaderiv")
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_glGetShaderInfoLog = LibGLESv2.NewProc("glGetShaderInfoLog")
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_glGetString = LibGLESv2.NewProc("glGetString")
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_glGetUniformLocation = LibGLESv2.NewProc("glGetUniformLocation")
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_glInvalidateFramebuffer = LibGLESv2.NewProc("glInvalidateFramebuffer")
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_glLinkProgram = LibGLESv2.NewProc("glLinkProgram")
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_glPixelStorei = LibGLESv2.NewProc("glPixelStorei")
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_glReadPixels = LibGLESv2.NewProc("glReadPixels")
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_glRenderbufferStorage = LibGLESv2.NewProc("glRenderbufferStorage")
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_glScissor = LibGLESv2.NewProc("glScissor")
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_glShaderSource = LibGLESv2.NewProc("glShaderSource")
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_glTexImage2D = LibGLESv2.NewProc("glTexImage2D")
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_glTexSubImage2D = LibGLESv2.NewProc("glTexSubImage2D")
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_glTexParameteri = LibGLESv2.NewProc("glTexParameteri")
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_glUniformBlockBinding = LibGLESv2.NewProc("glUniformBlockBinding")
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_glUniform1f = LibGLESv2.NewProc("glUniform1f")
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_glUniform1i = LibGLESv2.NewProc("glUniform1i")
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_glUniform2f = LibGLESv2.NewProc("glUniform2f")
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_glUniform3f = LibGLESv2.NewProc("glUniform3f")
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_glUniform4f = LibGLESv2.NewProc("glUniform4f")
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_glUseProgram = LibGLESv2.NewProc("glUseProgram")
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_glVertexAttribPointer = LibGLESv2.NewProc("glVertexAttribPointer")
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_glViewport = LibGLESv2.NewProc("glViewport")
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)
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type Functions struct {
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// gl.Query caches.
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int32s [100]int32
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}
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func (c *Functions) ActiveTexture(t gl.Enum) {
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syscall.Syscall(_glActiveTexture.Addr(), 1, uintptr(t), 0, 0)
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}
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func (c *Functions) AttachShader(p gl.Program, s gl.Shader) {
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syscall.Syscall(_glAttachShader.Addr(), 2, uintptr(p.V), uintptr(s.V), 0)
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}
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func (f *Functions) BeginQuery(target gl.Enum, query gl.Query) {
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syscall.Syscall(_glBeginQuery.Addr(), 2, uintptr(target), uintptr(query.V), 0)
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}
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func (c *Functions) BindAttribLocation(p gl.Program, a gl.Attrib, name string) {
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cname := cString(name)
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c0 := &cname[0]
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syscall.Syscall(_glBindAttribLocation.Addr(), 3, uintptr(p.V), uintptr(a), uintptr(unsafe.Pointer(c0)))
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issue34474KeepAlive(c)
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}
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func (c *Functions) BindBuffer(target gl.Enum, b gl.Buffer) {
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syscall.Syscall(_glBindBuffer.Addr(), 2, uintptr(target), uintptr(b.V), 0)
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}
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func (c *Functions) BindBufferBase(target gl.Enum, index int, b gl.Buffer) {
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syscall.Syscall(_glBindBufferBase.Addr(), 3, uintptr(target), uintptr(index), uintptr(b.V))
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}
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func (c *Functions) BindFramebuffer(target gl.Enum, fb gl.Framebuffer) {
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syscall.Syscall(_glBindFramebuffer.Addr(), 2, uintptr(target), uintptr(fb.V), 0)
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}
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func (c *Functions) BindRenderbuffer(target gl.Enum, rb gl.Renderbuffer) {
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syscall.Syscall(_glBindRenderbuffer.Addr(), 2, uintptr(target), uintptr(rb.V), 0)
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}
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func (c *Functions) BindTexture(target gl.Enum, t gl.Texture) {
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syscall.Syscall(_glBindTexture.Addr(), 2, uintptr(target), uintptr(t.V), 0)
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}
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func (c *Functions) BlendEquation(mode gl.Enum) {
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syscall.Syscall(_glBlendEquation.Addr(), 1, uintptr(mode), 0, 0)
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}
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func (c *Functions) BlendFunc(sfactor, dfactor gl.Enum) {
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syscall.Syscall(_glBlendFunc.Addr(), 2, uintptr(sfactor), uintptr(dfactor), 0)
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}
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func (c *Functions) BufferData(target gl.Enum, src []byte, usage gl.Enum) {
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if n := len(src); n == 0 {
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syscall.Syscall6(_glBufferData.Addr(), 4, uintptr(target), 0, 0, uintptr(usage), 0, 0)
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} else {
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s0 := &src[0]
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syscall.Syscall6(_glBufferData.Addr(), 4, uintptr(target), uintptr(n), uintptr(unsafe.Pointer(s0)), uintptr(usage), 0, 0)
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issue34474KeepAlive(s0)
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}
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}
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func (c *Functions) CheckFramebufferStatus(target gl.Enum) gl.Enum {
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s, _, _ := syscall.Syscall(_glCheckFramebufferStatus.Addr(), 1, uintptr(target), 0, 0)
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return gl.Enum(s)
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}
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func (c *Functions) Clear(mask gl.Enum) {
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syscall.Syscall(_glClear.Addr(), 1, uintptr(mask), 0, 0)
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}
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func (c *Functions) ClearColor(red, green, blue, alpha float32) {
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syscall.Syscall6(_glClearColor.Addr(), 4, uintptr(math.Float32bits(red)), uintptr(math.Float32bits(green)), uintptr(math.Float32bits(blue)), uintptr(math.Float32bits(alpha)), 0, 0)
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}
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func (c *Functions) ClearDepthf(d float32) {
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syscall.Syscall(_glClearDepthf.Addr(), 1, uintptr(math.Float32bits(d)), 0, 0)
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}
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func (c *Functions) CompileShader(s gl.Shader) {
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syscall.Syscall(_glCompileShader.Addr(), 1, uintptr(s.V), 0, 0)
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}
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func (c *Functions) CreateBuffer() gl.Buffer {
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var buf uintptr
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syscall.Syscall(_glGenBuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&buf)), 0)
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return gl.Buffer{uint(buf)}
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}
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func (c *Functions) CreateFramebuffer() gl.Framebuffer {
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var fb uintptr
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syscall.Syscall(_glGenFramebuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&fb)), 0)
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return gl.Framebuffer{uint(fb)}
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}
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func (c *Functions) CreateProgram() gl.Program {
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p, _, _ := syscall.Syscall(_glCreateProgram.Addr(), 0, 0, 0, 0)
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return gl.Program{uint(p)}
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}
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func (f *Functions) CreateQuery() gl.Query {
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var q uintptr
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syscall.Syscall(_glGenQueries.Addr(), 2, 1, uintptr(unsafe.Pointer(&q)), 0)
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return gl.Query{uint(q)}
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}
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func (c *Functions) CreateRenderbuffer() gl.Renderbuffer {
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var rb uintptr
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syscall.Syscall(_glGenRenderbuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&rb)), 0)
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return gl.Renderbuffer{uint(rb)}
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}
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func (c *Functions) CreateShader(ty gl.Enum) gl.Shader {
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s, _, _ := syscall.Syscall(_glCreateShader.Addr(), 1, uintptr(ty), 0, 0)
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return gl.Shader{uint(s)}
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}
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func (c *Functions) CreateTexture() gl.Texture {
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var t uintptr
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syscall.Syscall(_glGenTextures.Addr(), 2, 1, uintptr(unsafe.Pointer(&t)), 0)
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return gl.Texture{uint(t)}
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}
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func (c *Functions) DeleteBuffer(v gl.Buffer) {
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syscall.Syscall(_glDeleteBuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&v)), 0)
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}
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func (c *Functions) DeleteFramebuffer(v gl.Framebuffer) {
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syscall.Syscall(_glDeleteFramebuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&v.V)), 0)
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}
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func (c *Functions) DeleteProgram(p gl.Program) {
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syscall.Syscall(_glDeleteProgram.Addr(), 1, uintptr(p.V), 0, 0)
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}
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func (f *Functions) DeleteQuery(query gl.Query) {
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syscall.Syscall(_glDeleteQueries.Addr(), 2, 1, uintptr(unsafe.Pointer(&query.V)), 0)
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}
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func (c *Functions) DeleteShader(s gl.Shader) {
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syscall.Syscall(_glDeleteShader.Addr(), 1, uintptr(s.V), 0, 0)
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}
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func (c *Functions) DeleteRenderbuffer(v gl.Renderbuffer) {
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syscall.Syscall(_glDeleteRenderbuffers.Addr(), 2, 1, uintptr(unsafe.Pointer(&v.V)), 0)
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}
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func (c *Functions) DeleteTexture(v gl.Texture) {
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syscall.Syscall(_glDeleteTextures.Addr(), 2, 1, uintptr(unsafe.Pointer(&v.V)), 0)
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}
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func (c *Functions) DepthFunc(f gl.Enum) {
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syscall.Syscall(_glDepthFunc.Addr(), 1, uintptr(f), 0, 0)
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}
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func (c *Functions) DepthMask(mask bool) {
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var m uintptr
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if mask {
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m = 1
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}
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syscall.Syscall(_glDepthMask.Addr(), 1, m, 0, 0)
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}
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func (c *Functions) DisableVertexAttribArray(a gl.Attrib) {
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syscall.Syscall(_glDisableVertexAttribArray.Addr(), 1, uintptr(a), 0, 0)
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}
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func (c *Functions) Disable(cap gl.Enum) {
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syscall.Syscall(_glDisable.Addr(), 1, uintptr(cap), 0, 0)
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}
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func (c *Functions) DrawArrays(mode gl.Enum, first, count int) {
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syscall.Syscall(_glDrawArrays.Addr(), 3, uintptr(mode), uintptr(first), uintptr(count))
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}
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func (c *Functions) DrawElements(mode gl.Enum, count int, ty gl.Enum, offset int) {
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syscall.Syscall6(_glDrawElements.Addr(), 4, uintptr(mode), uintptr(count), uintptr(ty), uintptr(offset), 0, 0)
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}
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func (c *Functions) Enable(cap gl.Enum) {
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syscall.Syscall(_glEnable.Addr(), 1, uintptr(cap), 0, 0)
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}
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func (c *Functions) EnableVertexAttribArray(a gl.Attrib) {
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syscall.Syscall(_glEnableVertexAttribArray.Addr(), 1, uintptr(a), 0, 0)
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}
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func (f *Functions) EndQuery(target gl.Enum) {
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syscall.Syscall(_glEndQuery.Addr(), 1, uintptr(target), 0, 0)
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}
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func (c *Functions) Finish() {
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syscall.Syscall(_glFinish.Addr(), 0, 0, 0, 0)
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}
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func (c *Functions) FramebufferRenderbuffer(target, attachment, renderbuffertarget gl.Enum, renderbuffer gl.Renderbuffer) {
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syscall.Syscall6(_glFramebufferRenderbuffer.Addr(), 4, uintptr(target), uintptr(attachment), uintptr(renderbuffertarget), uintptr(renderbuffer.V), 0, 0)
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}
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func (c *Functions) FramebufferTexture2D(target, attachment, texTarget gl.Enum, t gl.Texture, level int) {
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syscall.Syscall6(_glFramebufferTexture2D.Addr(), 5, uintptr(target), uintptr(attachment), uintptr(texTarget), uintptr(t.V), uintptr(level), 0)
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}
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func (f *Functions) GetUniformBlockIndex(p gl.Program, name string) uint {
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cname := cString(name)
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c0 := &cname[0]
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u, _, _ := syscall.Syscall(_glGetUniformBlockIndex.Addr(), 2, uintptr(p.V), uintptr(unsafe.Pointer(c0)), 0)
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issue34474KeepAlive(c0)
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return uint(u)
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}
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func (c *Functions) GetBinding(pname gl.Enum) gl.Object {
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return gl.Object{uint(c.GetInteger(pname))}
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}
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func (c *Functions) GetError() gl.Enum {
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e, _, _ := syscall.Syscall(_glGetError.Addr(), 0, 0, 0, 0)
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return gl.Enum(e)
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}
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func (c *Functions) GetRenderbufferParameteri(target, pname gl.Enum) int {
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p, _, _ := syscall.Syscall(_glGetRenderbufferParameteri.Addr(), 2, uintptr(target), uintptr(pname), 0)
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return int(p)
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}
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func (c *Functions) GetFramebufferAttachmentParameteri(target, attachment, pname gl.Enum) int {
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p, _, _ := syscall.Syscall(_glGetFramebufferAttachmentParameteri.Addr(), 3, uintptr(target), uintptr(attachment), uintptr(pname))
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return int(p)
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}
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func (c *Functions) GetInteger(pname gl.Enum) int {
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syscall.Syscall(_glGetIntegerv.Addr(), 2, uintptr(pname), uintptr(unsafe.Pointer(&c.int32s[0])), 0)
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return int(c.int32s[0])
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}
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func (c *Functions) GetProgrami(p gl.Program, pname gl.Enum) int {
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syscall.Syscall(_glGetProgramiv.Addr(), 3, uintptr(p.V), uintptr(pname), uintptr(unsafe.Pointer(&c.int32s[0])))
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return int(c.int32s[0])
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}
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func (c *Functions) GetProgramInfoLog(p gl.Program) string {
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n := c.GetProgrami(p, gl.INFO_LOG_LENGTH)
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buf := make([]byte, n)
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syscall.Syscall6(_glGetProgramInfoLog.Addr(), 4, uintptr(p.V), uintptr(len(buf)), 0, uintptr(unsafe.Pointer(&buf[0])), 0, 0)
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return string(buf)
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}
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func (c *Functions) GetQueryObjectuiv(query gl.Query, pname gl.Enum) uint {
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syscall.Syscall(_glGetQueryObjectuiv.Addr(), 3, uintptr(query.V), uintptr(pname), uintptr(unsafe.Pointer(&c.int32s[0])))
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return uint(c.int32s[0])
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}
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func (c *Functions) GetShaderi(s gl.Shader, pname gl.Enum) int {
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syscall.Syscall(_glGetShaderiv.Addr(), 3, uintptr(s.V), uintptr(pname), uintptr(unsafe.Pointer(&c.int32s[0])))
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return int(c.int32s[0])
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}
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func (c *Functions) GetShaderInfoLog(s gl.Shader) string {
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n := c.GetShaderi(s, gl.INFO_LOG_LENGTH)
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buf := make([]byte, n)
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syscall.Syscall6(_glGetShaderInfoLog.Addr(), 4, uintptr(s.V), uintptr(len(buf)), 0, uintptr(unsafe.Pointer(&buf[0])), 0, 0)
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return string(buf)
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}
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func (c *Functions) GetString(pname gl.Enum) string {
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s, _, _ := syscall.Syscall(_glGetString.Addr(), 1, uintptr(pname), 0, 0)
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return gunsafe.GoString(gunsafe.SliceOf(s))
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}
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func (c *Functions) GetUniformLocation(p gl.Program, name string) gl.Uniform {
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cname := cString(name)
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c0 := &cname[0]
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u, _, _ := syscall.Syscall(_glGetUniformLocation.Addr(), 2, uintptr(p.V), uintptr(unsafe.Pointer(c0)), 0)
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issue34474KeepAlive(c0)
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return gl.Uniform{int(u)}
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}
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func (c *Functions) InvalidateFramebuffer(target, attachment gl.Enum) {
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addr := _glInvalidateFramebuffer.Addr()
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if addr == 0 {
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// InvalidateFramebuffer is just a hint. Skip it if not supported.
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return
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}
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syscall.Syscall(addr, 3, uintptr(target), 1, uintptr(unsafe.Pointer(&attachment)))
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}
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func (c *Functions) LinkProgram(p gl.Program) {
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syscall.Syscall(_glLinkProgram.Addr(), 1, uintptr(p.V), 0, 0)
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}
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func (c *Functions) PixelStorei(pname gl.Enum, param int32) {
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syscall.Syscall(_glPixelStorei.Addr(), 2, uintptr(pname), uintptr(param), 0)
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}
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func (f *Functions) ReadPixels(x, y, width, height int, format, ty gl.Enum, data []byte) {
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d0 := &data[0]
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syscall.Syscall9(_glReadPixels.Addr(), 7, uintptr(x), uintptr(y), uintptr(width), uintptr(height), uintptr(format), uintptr(ty), uintptr(unsafe.Pointer(d0)), 0, 0)
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issue34474KeepAlive(d0)
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}
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func (c *Functions) RenderbufferStorage(target, internalformat gl.Enum, width, height int) {
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syscall.Syscall6(_glRenderbufferStorage.Addr(), 4, uintptr(target), uintptr(internalformat), uintptr(width), uintptr(height), 0, 0)
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}
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func (c *Functions) Scissor(x, y, width, height int32) {
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syscall.Syscall6(_glScissor.Addr(), 4, uintptr(x), uintptr(y), uintptr(width), uintptr(height), 0, 0)
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}
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func (c *Functions) ShaderSource(s gl.Shader, src string) {
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var n uintptr = uintptr(len(src))
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psrc := &src
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syscall.Syscall6(_glShaderSource.Addr(), 4, uintptr(s.V), 1, uintptr(unsafe.Pointer(psrc)), uintptr(unsafe.Pointer(&n)), 0, 0)
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issue34474KeepAlive(psrc)
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}
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func (c *Functions) TexImage2D(target gl.Enum, level int, internalFormat int, width, height int, format, ty gl.Enum, data []byte) {
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if len(data) == 0 {
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syscall.Syscall9(_glTexImage2D.Addr(), 9, uintptr(target), uintptr(level), uintptr(internalFormat), uintptr(width), uintptr(height), 0, uintptr(format), uintptr(ty), 0)
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} else {
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d0 := &data[0]
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syscall.Syscall9(_glTexImage2D.Addr(), 9, uintptr(target), uintptr(level), uintptr(internalFormat), uintptr(width), uintptr(height), 0, uintptr(format), uintptr(ty), uintptr(unsafe.Pointer(d0)))
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issue34474KeepAlive(d0)
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}
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}
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func (c *Functions) TexSubImage2D(target gl.Enum, level int, x, y, width, height int, format, ty gl.Enum, data []byte) {
|
|
d0 := &data[0]
|
|
syscall.Syscall9(_glTexSubImage2D.Addr(), 9, uintptr(target), uintptr(level), uintptr(x), uintptr(y), uintptr(width), uintptr(height), uintptr(format), uintptr(ty), uintptr(unsafe.Pointer(d0)))
|
|
issue34474KeepAlive(d0)
|
|
}
|
|
func (c *Functions) TexParameteri(target, pname gl.Enum, param int) {
|
|
syscall.Syscall(_glTexParameteri.Addr(), 3, uintptr(target), uintptr(pname), uintptr(param))
|
|
}
|
|
func (f *Functions) UniformBlockBinding(p gl.Program, uniformBlockIndex uint, uniformBlockBinding uint) {
|
|
syscall.Syscall(_glUniformBlockBinding.Addr(), 3, uintptr(p.V), uintptr(uniformBlockIndex), uintptr(uniformBlockBinding))
|
|
}
|
|
func (c *Functions) Uniform1f(dst gl.Uniform, v float32) {
|
|
syscall.Syscall(_glUniform1f.Addr(), 2, uintptr(dst.V), uintptr(math.Float32bits(v)), 0)
|
|
}
|
|
func (c *Functions) Uniform1i(dst gl.Uniform, v int) {
|
|
syscall.Syscall(_glUniform1i.Addr(), 2, uintptr(dst.V), uintptr(v), 0)
|
|
}
|
|
func (c *Functions) Uniform2f(dst gl.Uniform, v0, v1 float32) {
|
|
syscall.Syscall(_glUniform2f.Addr(), 3, uintptr(dst.V), uintptr(math.Float32bits(v0)), uintptr(math.Float32bits(v1)))
|
|
}
|
|
func (c *Functions) Uniform3f(dst gl.Uniform, v0, v1, v2 float32) {
|
|
syscall.Syscall6(_glUniform3f.Addr(), 4, uintptr(dst.V), uintptr(math.Float32bits(v0)), uintptr(math.Float32bits(v1)), uintptr(math.Float32bits(v2)), 0, 0)
|
|
}
|
|
func (c *Functions) Uniform4f(dst gl.Uniform, v0, v1, v2, v3 float32) {
|
|
syscall.Syscall6(_glUniform4f.Addr(), 5, uintptr(dst.V), uintptr(math.Float32bits(v0)), uintptr(math.Float32bits(v1)), uintptr(math.Float32bits(v2)), uintptr(math.Float32bits(v3)), 0)
|
|
}
|
|
func (c *Functions) UseProgram(p gl.Program) {
|
|
syscall.Syscall(_glUseProgram.Addr(), 1, uintptr(p.V), 0, 0)
|
|
}
|
|
func (c *Functions) VertexAttribPointer(dst gl.Attrib, size int, ty gl.Enum, normalized bool, stride, offset int) {
|
|
var norm uintptr
|
|
if normalized {
|
|
norm = 1
|
|
}
|
|
syscall.Syscall6(_glVertexAttribPointer.Addr(), 6, uintptr(dst), uintptr(size), uintptr(ty), norm, uintptr(stride), uintptr(offset))
|
|
}
|
|
func (c *Functions) Viewport(x, y, width, height int) {
|
|
syscall.Syscall6(_glViewport.Addr(), 4, uintptr(x), uintptr(y), uintptr(width), uintptr(height), 0, 0)
|
|
}
|
|
|
|
func cString(s string) []byte {
|
|
b := make([]byte, len(s)+1)
|
|
copy(b, s)
|
|
return b
|
|
}
|
|
|
|
// issue34474KeepAlive calls runtime.KeepAlive as a
|
|
// workaround for golang.org/issue/34474.
|
|
func issue34474KeepAlive(v interface{}) {
|
|
runtime.KeepAlive(v)
|
|
}
|