mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
374 lines
13 KiB
Go
374 lines
13 KiB
Go
// Copyright 2020 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build android || ios || opengles
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package gles
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// #cgo !darwin CFLAGS: -Dos_notdarwin
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// #cgo darwin CFLAGS: -Dos_darwin
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// #cgo !android,!darwin pkg-config: glesv2
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// #cgo android LDFLAGS: -lGLESv2
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// #cgo darwin LDFLAGS: -framework OpenGLES
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//
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// #if defined(os_darwin)
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// #define GLES_SILENCE_DEPRECATION
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// #include <OpenGLES/ES2/glext.h>
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// #endif
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//
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// #if defined(os_notdarwin)
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// #include <GLES2/gl2.h>
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// #endif
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//
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// #include <stdlib.h>
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import "C"
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import (
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"unsafe"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl/glconst"
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)
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func glBool(x bool) C.GLboolean {
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if x {
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return glconst.TRUE
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}
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return glconst.FALSE
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}
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type DefaultContext struct{}
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func (DefaultContext) ActiveTexture(texture uint32) {
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C.glActiveTexture(C.GLenum(texture))
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}
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func (DefaultContext) AttachShader(program uint32, shader uint32) {
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C.glAttachShader(C.GLuint(program), C.GLuint(shader))
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}
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func (DefaultContext) BindAttribLocation(program uint32, index uint32, name string) {
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s := C.CString(name)
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defer C.free(unsafe.Pointer(s))
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C.glBindAttribLocation(C.GLuint(program), C.GLuint(index), (*C.GLchar)(unsafe.Pointer(s)))
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}
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func (DefaultContext) BindBuffer(target uint32, buffer uint32) {
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C.glBindBuffer(C.GLenum(target), C.GLuint(buffer))
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}
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func (DefaultContext) BindFramebuffer(target uint32, framebuffer uint32) {
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C.glBindFramebuffer(C.GLenum(target), C.GLuint(framebuffer))
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}
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func (DefaultContext) BindRenderbuffer(target uint32, renderbuffer uint32) {
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C.glBindRenderbuffer(C.GLenum(target), C.GLuint(renderbuffer))
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}
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func (DefaultContext) BindTexture(target uint32, texture uint32) {
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C.glBindTexture(C.GLenum(target), C.GLuint(texture))
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}
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func (DefaultContext) BlendEquationSeparate(modeRGB uint32, modeAlpha uint32) {
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C.glBlendEquationSeparate(C.GLenum(modeRGB), C.GLenum(modeAlpha))
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}
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func (DefaultContext) BlendFuncSeparate(srcRGB uint32, dstRGB uint32, srcAlpha uint32, dstAlpha uint32) {
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C.glBlendFuncSeparate(C.GLenum(srcRGB), C.GLenum(dstRGB), C.GLenum(srcAlpha), C.GLenum(dstAlpha))
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}
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func (DefaultContext) BufferData(target uint32, size int, data []byte, usage uint32) {
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var p *byte
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if data != nil {
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p = &data[0]
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}
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C.glBufferData(C.GLenum(target), C.GLsizeiptr(size), unsafe.Pointer(p), C.GLenum(usage))
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}
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func (DefaultContext) BufferSubData(target uint32, offset int, data []byte) {
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C.glBufferSubData(C.GLenum(target), C.GLintptr(offset), C.GLsizeiptr(len(data)), unsafe.Pointer(&data[0]))
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}
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func (DefaultContext) CheckFramebufferStatus(target uint32) uint32 {
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return uint32(C.glCheckFramebufferStatus(C.GLenum(target)))
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}
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func (DefaultContext) Clear(mask uint32) {
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C.glClear(C.GLbitfield(mask))
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}
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func (DefaultContext) ColorMask(red, green, blue, alpha bool) {
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C.glColorMask(glBool(red), glBool(green), glBool(blue), glBool(alpha))
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}
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func (DefaultContext) CompileShader(shader uint32) {
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C.glCompileShader(C.GLuint(shader))
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}
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func (DefaultContext) CreateProgram() uint32 {
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return uint32(C.glCreateProgram())
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}
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func (DefaultContext) CreateShader(xtype uint32) uint32 {
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return uint32(C.glCreateShader(C.GLenum(xtype)))
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}
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func (DefaultContext) DeleteBuffers(buffers []uint32) {
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C.glDeleteBuffers(C.GLsizei(len(buffers)), (*C.GLuint)(unsafe.Pointer(&buffers[0])))
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}
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func (DefaultContext) DeleteFramebuffers(framebuffers []uint32) {
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C.glDeleteFramebuffers(C.GLsizei(len(framebuffers)), (*C.GLuint)(unsafe.Pointer(&framebuffers[0])))
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}
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func (DefaultContext) DeleteProgram(program uint32) {
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C.glDeleteProgram(C.GLuint(program))
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}
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func (DefaultContext) DeleteRenderbuffers(renderbuffers []uint32) {
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C.glDeleteRenderbuffers(C.GLsizei(len(renderbuffers)), (*C.GLuint)(unsafe.Pointer(&renderbuffers[0])))
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}
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func (DefaultContext) DeleteShader(shader uint32) {
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C.glDeleteShader(C.GLuint(shader))
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}
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func (DefaultContext) DeleteTextures(textures []uint32) {
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C.glDeleteTextures(C.GLsizei(len(textures)), (*C.GLuint)(unsafe.Pointer(&textures[0])))
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}
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func (DefaultContext) Disable(cap uint32) {
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C.glDisable(C.GLenum(cap))
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}
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func (DefaultContext) DisableVertexAttribArray(index uint32) {
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C.glDisableVertexAttribArray(C.GLuint(index))
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}
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func (DefaultContext) DrawElements(mode uint32, count int32, xtype uint32, offset int) {
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C.glDrawElements(C.GLenum(mode), C.GLsizei(count), C.GLenum(xtype), unsafe.Pointer(uintptr(offset)))
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}
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func (DefaultContext) Enable(cap uint32) {
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C.glEnable(C.GLenum(cap))
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}
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func (DefaultContext) EnableVertexAttribArray(index uint32) {
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C.glEnableVertexAttribArray(C.GLuint(index))
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}
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func (DefaultContext) Flush() {
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C.glFlush()
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}
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func (DefaultContext) FramebufferRenderbuffer(target uint32, attachment uint32, renderbuffertarget uint32, renderbuffer uint32) {
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C.glFramebufferRenderbuffer(C.GLenum(target), C.GLenum(attachment), C.GLenum(renderbuffertarget), C.GLuint(renderbuffer))
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}
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func (DefaultContext) FramebufferTexture2D(target uint32, attachment uint32, textarget uint32, texture uint32, level int32) {
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C.glFramebufferTexture2D(C.GLenum(target), C.GLenum(attachment), C.GLenum(textarget), C.GLuint(texture), C.GLint(level))
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}
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func (DefaultContext) GenBuffers(n int32) []uint32 {
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buffers := make([]uint32, n)
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C.glGenBuffers(C.GLsizei(n), (*C.GLuint)(unsafe.Pointer(&buffers[0])))
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return buffers
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}
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func (DefaultContext) GenFramebuffers(n int32) []uint32 {
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framebuffers := make([]uint32, n)
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C.glGenFramebuffers(C.GLsizei(n), (*C.GLuint)(unsafe.Pointer(&framebuffers[0])))
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return framebuffers
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}
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func (DefaultContext) GenRenderbuffers(n int32) []uint32 {
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renderbuffers := make([]uint32, n)
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C.glGenRenderbuffers(C.GLsizei(n), (*C.GLuint)(unsafe.Pointer(&renderbuffers[0])))
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return renderbuffers
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}
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func (DefaultContext) GenTextures(n int32) []uint32 {
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textures := make([]uint32, n)
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C.glGenTextures(C.GLsizei(n), (*C.GLuint)(unsafe.Pointer(&textures[0])))
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return textures
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}
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func (DefaultContext) GetError() uint32 {
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return uint32(C.glGetError())
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}
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func (DefaultContext) GetIntegerv(dst []int32, pname uint32) {
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C.glGetIntegerv(C.GLenum(pname), (*C.GLint)(unsafe.Pointer(&dst[0])))
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}
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func (DefaultContext) GetProgramiv(dst []int32, program uint32, pname uint32) {
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C.glGetProgramiv(C.GLuint(program), C.GLenum(pname), (*C.GLint)(unsafe.Pointer(&dst[0])))
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}
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func (d DefaultContext) GetProgramInfoLog(program uint32) string {
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buflens := make([]int32, 1)
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d.GetProgramiv(buflens, program, glconst.INFO_LOG_LENGTH)
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buflen := buflens[0]
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if buflen == 0 {
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return ""
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}
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buf := make([]byte, buflen)
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var length int32
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C.glGetProgramInfoLog(C.GLuint(program), C.GLsizei(buflen), (*C.GLsizei)(unsafe.Pointer(&length)), (*C.GLchar)(unsafe.Pointer(&buf[0])))
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return string(buf[:length])
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}
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func (DefaultContext) GetShaderiv(dst []int32, shader uint32, pname uint32) {
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C.glGetShaderiv(C.GLuint(shader), C.GLenum(pname), (*C.GLint)(unsafe.Pointer(&dst[0])))
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}
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func (d DefaultContext) GetShaderInfoLog(shader uint32) string {
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buflens := make([]int32, 1)
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d.GetShaderiv(buflens, shader, glconst.INFO_LOG_LENGTH)
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buflen := buflens[0]
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if buflen == 0 {
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return ""
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}
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buf := make([]byte, buflen)
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var length int32
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C.glGetShaderInfoLog(C.GLuint(shader), C.GLsizei(buflen), (*C.GLsizei)(unsafe.Pointer(&length)), (*C.GLchar)(unsafe.Pointer(&buf[0])))
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return string(buf[:length])
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}
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func (DefaultContext) GetShaderPrecisionFormat(shadertype uint32, precisiontype uint32) (rangeLow, rangeHigh, precision int) {
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var r [2]int32
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var p int32
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C.glGetShaderPrecisionFormat(C.GLenum(shadertype), C.GLenum(precisiontype), (*C.GLint)(unsafe.Pointer(&r[0])), (*C.GLint)(unsafe.Pointer(&p)))
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return int(r[0]), int(r[1]), int(p)
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}
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func (DefaultContext) GetUniformLocation(program uint32, name string) int32 {
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s := C.CString(name)
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defer C.free(unsafe.Pointer(s))
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return int32(C.glGetUniformLocation(C.GLuint(program), (*C.GLchar)(unsafe.Pointer(s))))
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}
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func (DefaultContext) IsFramebuffer(framebuffer uint32) bool {
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return C.glIsFramebuffer(C.GLuint(framebuffer)) != glconst.FALSE
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}
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func (DefaultContext) IsProgram(program uint32) bool {
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return C.glIsProgram(C.GLuint(program)) != glconst.FALSE
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}
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func (DefaultContext) IsRenderbuffer(renderbuffer uint32) bool {
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return C.glIsRenderbuffer(C.GLuint(renderbuffer)) != glconst.FALSE
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}
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func (DefaultContext) IsTexture(texture uint32) bool {
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return C.glIsTexture(C.GLuint(texture)) != glconst.FALSE
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}
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func (DefaultContext) LinkProgram(program uint32) {
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C.glLinkProgram(C.GLuint(program))
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}
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func (DefaultContext) PixelStorei(pname uint32, param int32) {
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C.glPixelStorei(C.GLenum(pname), C.GLint(param))
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}
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func (DefaultContext) ReadPixels(dst []byte, x int32, y int32, width int32, height int32, format uint32, xtype uint32) {
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C.glReadPixels(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height), C.GLenum(format), C.GLenum(xtype), unsafe.Pointer(&dst[0]))
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}
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func (DefaultContext) RenderbufferStorage(target uint32, internalFormat uint32, width int32, height int32) {
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C.glRenderbufferStorage(C.GLenum(target), C.GLenum(internalFormat), C.GLsizei(width), C.GLsizei(height))
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}
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func (DefaultContext) Scissor(x, y, width, height int32) {
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C.glScissor(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height))
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}
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func (DefaultContext) ShaderSource(shader uint32, xstring string) {
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s, free := cStringPtr(xstring)
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defer free()
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C.glShaderSource(C.GLuint(shader), 1, (**C.GLchar)(s), nil)
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}
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func (DefaultContext) StencilFunc(func_ uint32, ref int32, mask uint32) {
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C.glStencilFunc(C.GLenum(func_), C.GLint(ref), C.GLuint(mask))
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}
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func (DefaultContext) StencilOp(sfail, dpfail, dppass uint32) {
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C.glStencilOp(C.GLenum(sfail), C.GLenum(dpfail), C.GLenum(dppass))
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}
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func (DefaultContext) TexImage2D(target uint32, level int32, internalformat int32, width int32, height int32, format uint32, xtype uint32, pixels []byte) {
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var p *byte
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if pixels != nil {
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p = &pixels[0]
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}
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C.glTexImage2D(C.GLenum(target), C.GLint(level), C.GLint(internalformat), C.GLsizei(width), C.GLsizei(height), 0 /* border */, C.GLenum(format), C.GLenum(xtype), unsafe.Pointer(p))
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}
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func (DefaultContext) TexParameteri(target uint32, pname uint32, param int32) {
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C.glTexParameteri(C.GLenum(target), C.GLenum(pname), C.GLint(param))
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}
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func (DefaultContext) TexSubImage2D(target uint32, level int32, xoffset int32, yoffset int32, width int32, height int32, format uint32, xtype uint32, pixels []byte) {
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C.glTexSubImage2D(C.GLenum(target), C.GLint(level), C.GLint(xoffset), C.GLint(yoffset), C.GLsizei(width), C.GLsizei(height), C.GLenum(format), C.GLenum(xtype), unsafe.Pointer(&pixels[0]))
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}
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func (DefaultContext) Uniform1f(location int32, v0 float32) {
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C.glUniform1f(C.GLint(location), C.GLfloat(v0))
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}
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func (DefaultContext) Uniform1fv(location int32, value []float32) {
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C.glUniform1fv(C.GLint(location), C.GLsizei(len(value)), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) Uniform1i(location int32, v0 int32) {
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C.glUniform1i(C.GLint(location), C.GLint(v0))
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}
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func (DefaultContext) Uniform2fv(location int32, value []float32) {
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C.glUniform2fv(C.GLint(location), C.GLsizei(len(value)/2), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) Uniform3fv(location int32, value []float32) {
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C.glUniform3fv(C.GLint(location), C.GLsizei(len(value)/3), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) Uniform4fv(location int32, value []float32) {
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C.glUniform4fv(C.GLint(location), C.GLsizei(len(value)/4), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) UniformMatrix2fv(location int32, transpose bool, value []float32) {
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C.glUniformMatrix2fv(C.GLint(location), C.GLsizei(len(value)/4), glBool(transpose), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) UniformMatrix3fv(location int32, transpose bool, value []float32) {
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C.glUniformMatrix3fv(C.GLint(location), C.GLsizei(len(value)/9), glBool(transpose), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) UniformMatrix4fv(location int32, transpose bool, value []float32) {
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C.glUniformMatrix4fv(C.GLint(location), C.GLsizei(len(value)/16), glBool(transpose), (*C.GLfloat)(unsafe.Pointer(&value[0])))
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}
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func (DefaultContext) UseProgram(program uint32) {
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C.glUseProgram(C.GLuint(program))
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}
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func (DefaultContext) VertexAttribPointer(index uint32, size int32, xtype uint32, normalized bool, stride int32, offset int) {
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C.glVertexAttribPointer(C.GLuint(index), C.GLint(size), C.GLenum(xtype), glBool(normalized), C.GLsizei(stride), unsafe.Pointer(uintptr(offset)))
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}
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func (DefaultContext) Viewport(x int32, y int32, width int32, height int32) {
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C.glViewport(C.GLint(x), C.GLint(y), C.GLsizei(width), C.GLsizei(height))
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}
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