mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-28 04:38:55 +01:00
acc933b7c3
This change is an experimental implementation to use Pixel Buffer Objects. This reduces calls of glTexSubImage2D. This works only on desktops. Unfortunately WebGL does not have this features. Mobiles can have PBO as of OpenGL ES 3. Updates #976
551 lines
19 KiB
Go
551 lines
19 KiB
Go
// SPDX-License-Identifier: MIT
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package gl
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import (
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"errors"
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"math"
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"syscall"
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"unsafe"
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)
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var (
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gpAttachShader uintptr
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gpBindAttribLocation uintptr
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gpBindBuffer uintptr
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gpBindFramebufferEXT uintptr
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gpBindTexture uintptr
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gpBlendFunc uintptr
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gpBufferData uintptr
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gpBufferSubData uintptr
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gpCheckFramebufferStatusEXT uintptr
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gpCompileShader uintptr
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gpCreateProgram uintptr
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gpCreateShader uintptr
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gpDeleteBuffers uintptr
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gpDeleteFramebuffersEXT uintptr
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gpDeleteProgram uintptr
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gpDeleteShader uintptr
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gpDeleteTextures uintptr
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gpDisableVertexAttribArray uintptr
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gpDrawElements uintptr
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gpEnable uintptr
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gpEnableVertexAttribArray uintptr
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gpFlush uintptr
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gpFramebufferTexture2DEXT uintptr
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gpGenBuffers uintptr
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gpGenFramebuffersEXT uintptr
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gpGenTextures uintptr
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gpGetDoublei_v uintptr
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gpGetDoublei_vEXT uintptr
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gpGetError uintptr
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gpGetFloati_v uintptr
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gpGetFloati_vEXT uintptr
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gpGetIntegeri_v uintptr
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gpGetIntegerui64i_vNV uintptr
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gpGetIntegerv uintptr
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gpGetPointeri_vEXT uintptr
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gpGetProgramiv uintptr
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gpGetShaderInfoLog uintptr
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gpGetShaderiv uintptr
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gpGetTransformFeedbacki64_v uintptr
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gpGetTransformFeedbacki_v uintptr
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gpGetUniformLocation uintptr
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gpGetUnsignedBytei_vEXT uintptr
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gpGetVertexArrayIntegeri_vEXT uintptr
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gpGetVertexArrayPointeri_vEXT uintptr
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gpIsFramebufferEXT uintptr
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gpIsProgram uintptr
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gpIsTexture uintptr
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gpLinkProgram uintptr
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gpMapBuffer uintptr
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gpPixelStorei uintptr
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gpReadPixels uintptr
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gpShaderSource uintptr
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gpTexImage2D uintptr
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gpTexParameteri uintptr
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gpTexSubImage2D uintptr
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gpUniform1f uintptr
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gpUniform1i uintptr
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gpUniform2fv uintptr
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gpUniform4fv uintptr
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gpUniformMatrix4fv uintptr
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gpUnmapBuffer uintptr
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gpUseProgram uintptr
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gpVertexAttribPointer uintptr
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gpViewport uintptr
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)
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func boolToUintptr(b bool) uintptr {
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if b {
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return 1
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}
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return 0
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}
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func AttachShader(program uint32, shader uint32) {
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syscall.Syscall(gpAttachShader, 2, uintptr(program), uintptr(shader), 0)
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}
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func BindAttribLocation(program uint32, index uint32, name *uint8) {
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syscall.Syscall(gpBindAttribLocation, 3, uintptr(program), uintptr(index), uintptr(unsafe.Pointer(name)))
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}
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func BindBuffer(target uint32, buffer uint32) {
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syscall.Syscall(gpBindBuffer, 2, uintptr(target), uintptr(buffer), 0)
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}
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func BindFramebufferEXT(target uint32, framebuffer uint32) {
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syscall.Syscall(gpBindFramebufferEXT, 2, uintptr(target), uintptr(framebuffer), 0)
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}
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func BindTexture(target uint32, texture uint32) {
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syscall.Syscall(gpBindTexture, 2, uintptr(target), uintptr(texture), 0)
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}
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func BlendFunc(sfactor uint32, dfactor uint32) {
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syscall.Syscall(gpBlendFunc, 2, uintptr(sfactor), uintptr(dfactor), 0)
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}
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func BufferData(target uint32, size int, data unsafe.Pointer, usage uint32) {
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syscall.Syscall6(gpBufferData, 4, uintptr(target), uintptr(size), uintptr(data), uintptr(usage), 0, 0)
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}
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func BufferSubData(target uint32, offset int, size int, data unsafe.Pointer) {
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syscall.Syscall6(gpBufferSubData, 4, uintptr(target), uintptr(offset), uintptr(size), uintptr(data), 0, 0)
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}
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func CheckFramebufferStatusEXT(target uint32) uint32 {
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ret, _, _ := syscall.Syscall(gpCheckFramebufferStatusEXT, 1, uintptr(target), 0, 0)
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return (uint32)(ret)
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}
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func CompileShader(shader uint32) {
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syscall.Syscall(gpCompileShader, 1, uintptr(shader), 0, 0)
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}
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func CreateProgram() uint32 {
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ret, _, _ := syscall.Syscall(gpCreateProgram, 0, 0, 0, 0)
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return (uint32)(ret)
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}
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func CreateShader(xtype uint32) uint32 {
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ret, _, _ := syscall.Syscall(gpCreateShader, 1, uintptr(xtype), 0, 0)
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return (uint32)(ret)
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}
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func DeleteBuffers(n int32, buffers *uint32) {
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syscall.Syscall(gpDeleteBuffers, 2, uintptr(n), uintptr(unsafe.Pointer(buffers)), 0)
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}
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func DeleteFramebuffersEXT(n int32, framebuffers *uint32) {
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syscall.Syscall(gpDeleteFramebuffersEXT, 2, uintptr(n), uintptr(unsafe.Pointer(framebuffers)), 0)
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}
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func DeleteProgram(program uint32) {
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syscall.Syscall(gpDeleteProgram, 1, uintptr(program), 0, 0)
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}
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func DeleteShader(shader uint32) {
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syscall.Syscall(gpDeleteShader, 1, uintptr(shader), 0, 0)
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}
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func DeleteTextures(n int32, textures *uint32) {
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syscall.Syscall(gpDeleteTextures, 2, uintptr(n), uintptr(unsafe.Pointer(textures)), 0)
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}
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func DisableVertexAttribArray(index uint32) {
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syscall.Syscall(gpDisableVertexAttribArray, 1, uintptr(index), 0, 0)
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}
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func DrawElements(mode uint32, count int32, xtype uint32, indices uintptr) {
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syscall.Syscall6(gpDrawElements, 4, uintptr(mode), uintptr(count), uintptr(xtype), uintptr(indices), 0, 0)
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}
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func Enable(cap uint32) {
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syscall.Syscall(gpEnable, 1, uintptr(cap), 0, 0)
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}
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func EnableVertexAttribArray(index uint32) {
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syscall.Syscall(gpEnableVertexAttribArray, 1, uintptr(index), 0, 0)
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}
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func Flush() {
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syscall.Syscall(gpFlush, 0, 0, 0, 0)
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}
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func FramebufferTexture2DEXT(target uint32, attachment uint32, textarget uint32, texture uint32, level int32) {
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syscall.Syscall6(gpFramebufferTexture2DEXT, 5, uintptr(target), uintptr(attachment), uintptr(textarget), uintptr(texture), uintptr(level), 0)
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}
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func GenBuffers(n int32, buffers *uint32) {
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syscall.Syscall(gpGenBuffers, 2, uintptr(n), uintptr(unsafe.Pointer(buffers)), 0)
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}
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func GenFramebuffersEXT(n int32, framebuffers *uint32) {
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syscall.Syscall(gpGenFramebuffersEXT, 2, uintptr(n), uintptr(unsafe.Pointer(framebuffers)), 0)
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}
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func GenTextures(n int32, textures *uint32) {
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syscall.Syscall(gpGenTextures, 2, uintptr(n), uintptr(unsafe.Pointer(textures)), 0)
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}
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func GetDoublei_v(target uint32, index uint32, data *float64) {
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syscall.Syscall(gpGetDoublei_v, 3, uintptr(target), uintptr(index), uintptr(unsafe.Pointer(data)))
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}
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func GetDoublei_vEXT(pname uint32, index uint32, params *float64) {
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syscall.Syscall(gpGetDoublei_vEXT, 3, uintptr(pname), uintptr(index), uintptr(unsafe.Pointer(params)))
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}
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func GetError() uint32 {
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ret, _, _ := syscall.Syscall(gpGetError, 0, 0, 0, 0)
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return (uint32)(ret)
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}
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func GetFloati_v(target uint32, index uint32, data *float32) {
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syscall.Syscall(gpGetFloati_v, 3, uintptr(target), uintptr(index), uintptr(unsafe.Pointer(data)))
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}
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func GetFloati_vEXT(pname uint32, index uint32, params *float32) {
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syscall.Syscall(gpGetFloati_vEXT, 3, uintptr(pname), uintptr(index), uintptr(unsafe.Pointer(params)))
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}
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func GetIntegeri_v(target uint32, index uint32, data *int32) {
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syscall.Syscall(gpGetIntegeri_v, 3, uintptr(target), uintptr(index), uintptr(unsafe.Pointer(data)))
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}
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func GetIntegerui64i_vNV(value uint32, index uint32, result *uint64) {
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syscall.Syscall(gpGetIntegerui64i_vNV, 3, uintptr(value), uintptr(index), uintptr(unsafe.Pointer(result)))
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}
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func GetIntegerv(pname uint32, data *int32) {
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syscall.Syscall(gpGetIntegerv, 2, uintptr(pname), uintptr(unsafe.Pointer(data)), 0)
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}
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func GetPointeri_vEXT(pname uint32, index uint32, params *unsafe.Pointer) {
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syscall.Syscall(gpGetPointeri_vEXT, 3, uintptr(pname), uintptr(index), uintptr(unsafe.Pointer(params)))
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}
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func GetProgramiv(program uint32, pname uint32, params *int32) {
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syscall.Syscall(gpGetProgramiv, 3, uintptr(program), uintptr(pname), uintptr(unsafe.Pointer(params)))
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}
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func GetShaderInfoLog(shader uint32, bufSize int32, length *int32, infoLog *uint8) {
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syscall.Syscall6(gpGetShaderInfoLog, 4, uintptr(shader), uintptr(bufSize), uintptr(unsafe.Pointer(length)), uintptr(unsafe.Pointer(infoLog)), 0, 0)
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}
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func GetShaderiv(shader uint32, pname uint32, params *int32) {
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syscall.Syscall(gpGetShaderiv, 3, uintptr(shader), uintptr(pname), uintptr(unsafe.Pointer(params)))
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}
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func GetTransformFeedbacki64_v(xfb uint32, pname uint32, index uint32, param *int64) {
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syscall.Syscall6(gpGetTransformFeedbacki64_v, 4, uintptr(xfb), uintptr(pname), uintptr(index), uintptr(unsafe.Pointer(param)), 0, 0)
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}
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func GetTransformFeedbacki_v(xfb uint32, pname uint32, index uint32, param *int32) {
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syscall.Syscall6(gpGetTransformFeedbacki_v, 4, uintptr(xfb), uintptr(pname), uintptr(index), uintptr(unsafe.Pointer(param)), 0, 0)
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}
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func GetUniformLocation(program uint32, name *uint8) int32 {
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ret, _, _ := syscall.Syscall(gpGetUniformLocation, 2, uintptr(program), uintptr(unsafe.Pointer(name)), 0)
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return (int32)(ret)
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}
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func GetUnsignedBytei_vEXT(target uint32, index uint32, data *uint8) {
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syscall.Syscall(gpGetUnsignedBytei_vEXT, 3, uintptr(target), uintptr(index), uintptr(unsafe.Pointer(data)))
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}
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func GetVertexArrayIntegeri_vEXT(vaobj uint32, index uint32, pname uint32, param *int32) {
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syscall.Syscall6(gpGetVertexArrayIntegeri_vEXT, 4, uintptr(vaobj), uintptr(index), uintptr(pname), uintptr(unsafe.Pointer(param)), 0, 0)
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}
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func GetVertexArrayPointeri_vEXT(vaobj uint32, index uint32, pname uint32, param *unsafe.Pointer) {
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syscall.Syscall6(gpGetVertexArrayPointeri_vEXT, 4, uintptr(vaobj), uintptr(index), uintptr(pname), uintptr(unsafe.Pointer(param)), 0, 0)
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}
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func IsFramebufferEXT(framebuffer uint32) bool {
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ret, _, _ := syscall.Syscall(gpIsFramebufferEXT, 1, uintptr(framebuffer), 0, 0)
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return ret != 0
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}
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func IsProgram(program uint32) bool {
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ret, _, _ := syscall.Syscall(gpIsProgram, 1, uintptr(program), 0, 0)
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return ret != 0
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}
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func IsTexture(texture uint32) bool {
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ret, _, _ := syscall.Syscall(gpIsTexture, 1, uintptr(texture), 0, 0)
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return ret != 0
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}
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func MapBuffer(target uint32, access uint32) unsafe.Pointer {
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ret, _, _ := syscall.Syscall(gpMapBuffer, 2, uintptr(target), uintptr(access), 0)
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return unsafe.Pointer(ret)
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}
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func LinkProgram(program uint32) {
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syscall.Syscall(gpLinkProgram, 1, uintptr(program), 0, 0)
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}
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func PixelStorei(pname uint32, param int32) {
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syscall.Syscall(gpPixelStorei, 2, uintptr(pname), uintptr(param), 0)
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}
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func ReadPixels(x int32, y int32, width int32, height int32, format uint32, xtype uint32, pixels unsafe.Pointer) {
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syscall.Syscall9(gpReadPixels, 7, uintptr(x), uintptr(y), uintptr(width), uintptr(height), uintptr(format), uintptr(xtype), uintptr(pixels), 0, 0)
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}
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func ShaderSource(shader uint32, count int32, xstring **uint8, length *int32) {
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syscall.Syscall6(gpShaderSource, 4, uintptr(shader), uintptr(count), uintptr(unsafe.Pointer(xstring)), uintptr(unsafe.Pointer(length)), 0, 0)
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}
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func TexImage2D(target uint32, level int32, internalformat int32, width int32, height int32, border int32, format uint32, xtype uint32, pixels unsafe.Pointer) {
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syscall.Syscall9(gpTexImage2D, 9, uintptr(target), uintptr(level), uintptr(internalformat), uintptr(width), uintptr(height), uintptr(border), uintptr(format), uintptr(xtype), uintptr(pixels))
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}
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func TexParameteri(target uint32, pname uint32, param int32) {
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syscall.Syscall(gpTexParameteri, 3, uintptr(target), uintptr(pname), uintptr(param))
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}
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func TexSubImage2D(target uint32, level int32, xoffset int32, yoffset int32, width int32, height int32, format uint32, xtype uint32, pixels unsafe.Pointer) {
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syscall.Syscall9(gpTexSubImage2D, 9, uintptr(target), uintptr(level), uintptr(xoffset), uintptr(yoffset), uintptr(width), uintptr(height), uintptr(format), uintptr(xtype), uintptr(pixels))
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}
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func Uniform1f(location int32, v0 float32) {
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syscall.Syscall(gpUniform1f, 2, uintptr(location), uintptr(math.Float32bits(v0)), 0)
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}
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func Uniform1i(location int32, v0 int32) {
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syscall.Syscall(gpUniform1i, 2, uintptr(location), uintptr(v0), 0)
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}
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func Uniform2fv(location int32, count int32, value *float32) {
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syscall.Syscall(gpUniform2fv, 3, uintptr(location), uintptr(count), uintptr(unsafe.Pointer(value)))
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}
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func Uniform4fv(location int32, count int32, value *float32) {
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syscall.Syscall(gpUniform4fv, 3, uintptr(location), uintptr(count), uintptr(unsafe.Pointer(value)))
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}
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func UniformMatrix4fv(location int32, count int32, transpose bool, value *float32) {
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syscall.Syscall6(gpUniformMatrix4fv, 4, uintptr(location), uintptr(count), boolToUintptr(transpose), uintptr(unsafe.Pointer(value)), 0, 0)
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}
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func UnmapBuffer(target uint32) bool {
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ret, _, _ := syscall.Syscall(gpUnmapBuffer, 1, uintptr(target), 0, 0)
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return ret != 0
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}
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func UseProgram(program uint32) {
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syscall.Syscall(gpUseProgram, 1, uintptr(program), 0, 0)
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}
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func VertexAttribPointer(index uint32, size int32, xtype uint32, normalized bool, stride int32, pointer uintptr) {
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syscall.Syscall6(gpVertexAttribPointer, 6, uintptr(index), uintptr(size), uintptr(xtype), boolToUintptr(normalized), uintptr(stride), uintptr(pointer))
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}
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func Viewport(x int32, y int32, width int32, height int32) {
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syscall.Syscall6(gpViewport, 4, uintptr(x), uintptr(y), uintptr(width), uintptr(height), 0, 0)
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}
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// InitWithProcAddrFunc intializes the package using the specified OpenGL
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// function pointer loading function. For more cases Init should be used
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func InitWithProcAddrFunc(getProcAddr func(name string) uintptr) error {
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gpAttachShader = getProcAddr("glAttachShader")
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if gpAttachShader == 0 {
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return errors.New("glAttachShader")
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}
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gpBindAttribLocation = getProcAddr("glBindAttribLocation")
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if gpBindAttribLocation == 0 {
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return errors.New("glBindAttribLocation")
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}
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gpBindBuffer = getProcAddr("glBindBuffer")
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if gpBindBuffer == 0 {
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return errors.New("glBindBuffer")
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}
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gpBindFramebufferEXT = getProcAddr("glBindFramebufferEXT")
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gpBindTexture = getProcAddr("glBindTexture")
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if gpBindTexture == 0 {
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return errors.New("glBindTexture")
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}
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gpBlendFunc = getProcAddr("glBlendFunc")
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if gpBlendFunc == 0 {
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return errors.New("glBlendFunc")
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}
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gpBufferData = getProcAddr("glBufferData")
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if gpBufferData == 0 {
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return errors.New("glBufferData")
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}
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gpBufferSubData = getProcAddr("glBufferSubData")
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if gpBufferSubData == 0 {
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return errors.New("glBufferSubData")
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}
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gpCheckFramebufferStatusEXT = getProcAddr("glCheckFramebufferStatusEXT")
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gpCompileShader = getProcAddr("glCompileShader")
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if gpCompileShader == 0 {
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return errors.New("glCompileShader")
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}
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gpCreateProgram = getProcAddr("glCreateProgram")
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if gpCreateProgram == 0 {
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return errors.New("glCreateProgram")
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}
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gpCreateShader = getProcAddr("glCreateShader")
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if gpCreateShader == 0 {
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return errors.New("glCreateShader")
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}
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gpDeleteBuffers = getProcAddr("glDeleteBuffers")
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if gpDeleteBuffers == 0 {
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return errors.New("glDeleteBuffers")
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}
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gpDeleteFramebuffersEXT = getProcAddr("glDeleteFramebuffersEXT")
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gpDeleteProgram = getProcAddr("glDeleteProgram")
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if gpDeleteProgram == 0 {
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return errors.New("glDeleteProgram")
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}
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gpDeleteShader = getProcAddr("glDeleteShader")
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if gpDeleteShader == 0 {
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return errors.New("glDeleteShader")
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}
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gpDeleteTextures = getProcAddr("glDeleteTextures")
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if gpDeleteTextures == 0 {
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return errors.New("glDeleteTextures")
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}
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gpDisableVertexAttribArray = getProcAddr("glDisableVertexAttribArray")
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if gpDisableVertexAttribArray == 0 {
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return errors.New("glDisableVertexAttribArray")
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}
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gpDrawElements = getProcAddr("glDrawElements")
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if gpDrawElements == 0 {
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return errors.New("glDrawElements")
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}
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gpEnable = getProcAddr("glEnable")
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if gpEnable == 0 {
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return errors.New("glEnable")
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}
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gpEnableVertexAttribArray = getProcAddr("glEnableVertexAttribArray")
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if gpEnableVertexAttribArray == 0 {
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return errors.New("glEnableVertexAttribArray")
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}
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gpFlush = getProcAddr("glFlush")
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if gpFlush == 0 {
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return errors.New("glFlush")
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}
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gpFramebufferTexture2DEXT = getProcAddr("glFramebufferTexture2DEXT")
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gpGenBuffers = getProcAddr("glGenBuffers")
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if gpGenBuffers == 0 {
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return errors.New("glGenBuffers")
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}
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gpGenFramebuffersEXT = getProcAddr("glGenFramebuffersEXT")
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gpGenTextures = getProcAddr("glGenTextures")
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if gpGenTextures == 0 {
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return errors.New("glGenTextures")
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}
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gpGetDoublei_v = getProcAddr("glGetDoublei_v")
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gpGetDoublei_vEXT = getProcAddr("glGetDoublei_vEXT")
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gpGetError = getProcAddr("glGetError")
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if gpGetError == 0 {
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return errors.New("glGetError")
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}
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gpGetFloati_v = getProcAddr("glGetFloati_v")
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gpGetFloati_vEXT = getProcAddr("glGetFloati_vEXT")
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gpGetIntegeri_v = getProcAddr("glGetIntegeri_v")
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gpGetIntegerui64i_vNV = getProcAddr("glGetIntegerui64i_vNV")
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gpGetIntegerv = getProcAddr("glGetIntegerv")
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if gpGetIntegerv == 0 {
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return errors.New("glGetIntegerv")
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}
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|
gpGetPointeri_vEXT = getProcAddr("glGetPointeri_vEXT")
|
|
gpGetProgramiv = getProcAddr("glGetProgramiv")
|
|
if gpGetProgramiv == 0 {
|
|
return errors.New("glGetProgramiv")
|
|
}
|
|
gpGetShaderInfoLog = getProcAddr("glGetShaderInfoLog")
|
|
if gpGetShaderInfoLog == 0 {
|
|
return errors.New("glGetShaderInfoLog")
|
|
}
|
|
gpGetShaderiv = getProcAddr("glGetShaderiv")
|
|
if gpGetShaderiv == 0 {
|
|
return errors.New("glGetShaderiv")
|
|
}
|
|
gpGetTransformFeedbacki64_v = getProcAddr("glGetTransformFeedbacki64_v")
|
|
gpGetTransformFeedbacki_v = getProcAddr("glGetTransformFeedbacki_v")
|
|
gpGetUniformLocation = getProcAddr("glGetUniformLocation")
|
|
if gpGetUniformLocation == 0 {
|
|
return errors.New("glGetUniformLocation")
|
|
}
|
|
gpGetUnsignedBytei_vEXT = getProcAddr("glGetUnsignedBytei_vEXT")
|
|
gpGetVertexArrayIntegeri_vEXT = getProcAddr("glGetVertexArrayIntegeri_vEXT")
|
|
gpGetVertexArrayPointeri_vEXT = getProcAddr("glGetVertexArrayPointeri_vEXT")
|
|
gpIsFramebufferEXT = getProcAddr("glIsFramebufferEXT")
|
|
gpIsProgram = getProcAddr("glIsProgram")
|
|
if gpIsProgram == 0 {
|
|
return errors.New("glIsProgram")
|
|
}
|
|
gpIsTexture = getProcAddr("glIsTexture")
|
|
if gpIsTexture == 0 {
|
|
return errors.New("glIsTexture")
|
|
}
|
|
gpMapBuffer = getProcAddr("glMapBuffer")
|
|
if gpMapBuffer == 0 {
|
|
return errors.New("glMapBuffer")
|
|
}
|
|
gpLinkProgram = getProcAddr("glLinkProgram")
|
|
if gpLinkProgram == 0 {
|
|
return errors.New("glLinkProgram")
|
|
}
|
|
gpPixelStorei = getProcAddr("glPixelStorei")
|
|
if gpPixelStorei == 0 {
|
|
return errors.New("glPixelStorei")
|
|
}
|
|
gpReadPixels = getProcAddr("glReadPixels")
|
|
if gpReadPixels == 0 {
|
|
return errors.New("glReadPixels")
|
|
}
|
|
gpShaderSource = getProcAddr("glShaderSource")
|
|
if gpShaderSource == 0 {
|
|
return errors.New("glShaderSource")
|
|
}
|
|
gpTexImage2D = getProcAddr("glTexImage2D")
|
|
if gpTexImage2D == 0 {
|
|
return errors.New("glTexImage2D")
|
|
}
|
|
gpTexParameteri = getProcAddr("glTexParameteri")
|
|
if gpTexParameteri == 0 {
|
|
return errors.New("glTexParameteri")
|
|
}
|
|
gpTexSubImage2D = getProcAddr("glTexSubImage2D")
|
|
if gpTexSubImage2D == 0 {
|
|
return errors.New("glTexSubImage2D")
|
|
}
|
|
gpUniform1f = getProcAddr("glUniform1f")
|
|
if gpUniform1f == 0 {
|
|
return errors.New("glUniform1f")
|
|
}
|
|
gpUniform1i = getProcAddr("glUniform1i")
|
|
if gpUniform1i == 0 {
|
|
return errors.New("glUniform1i")
|
|
}
|
|
gpUniform2fv = getProcAddr("glUniform2fv")
|
|
if gpUniform2fv == 0 {
|
|
return errors.New("glUniform2fv")
|
|
}
|
|
gpUniform4fv = getProcAddr("glUniform4fv")
|
|
if gpUniform4fv == 0 {
|
|
return errors.New("glUniform4fv")
|
|
}
|
|
gpUniformMatrix4fv = getProcAddr("glUniformMatrix4fv")
|
|
if gpUniformMatrix4fv == 0 {
|
|
return errors.New("glUniformMatrix4fv")
|
|
}
|
|
gpUnmapBuffer = getProcAddr("glUnmapBuffer")
|
|
if gpUnmapBuffer == 0 {
|
|
return errors.New("glUnmapBuffer")
|
|
}
|
|
gpUseProgram = getProcAddr("glUseProgram")
|
|
if gpUseProgram == 0 {
|
|
return errors.New("glUseProgram")
|
|
}
|
|
gpVertexAttribPointer = getProcAddr("glVertexAttribPointer")
|
|
if gpVertexAttribPointer == 0 {
|
|
return errors.New("glVertexAttribPointer")
|
|
}
|
|
gpViewport = getProcAddr("glViewport")
|
|
if gpViewport == 0 {
|
|
return errors.New("glViewport")
|
|
}
|
|
return nil
|
|
}
|