mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2025-10-31 19:52:47 +08:00
540 lines
19 KiB
Go
540 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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gpActiveTexture uintptr
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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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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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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 ActiveTexture(texture uint32) {
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syscall.Syscall(gpActiveTexture, 1, uintptr(texture), 0, 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 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 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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gpActiveTexture = getProcAddr("glActiveTexture")
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if gpActiveTexture == 0 {
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return errors.New("glActiveTexture")
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}
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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")
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gpGetProgramiv = getProcAddr("glGetProgramiv")
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if gpGetProgramiv == 0 {
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return errors.New("glGetProgramiv")
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}
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gpGetShaderInfoLog = getProcAddr("glGetShaderInfoLog")
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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")
|
|
}
|
|
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")
|
|
}
|
|
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
|
|
}
|