ebiten/internal/buffered/image.go
Hajime Hoshi 42056c2d61 restorable: Refactoring: Remove Clear
Fill now fills the whole texture.
2019-12-02 03:03:07 +09:00

226 lines
5.1 KiB
Go

// Copyright 2019 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package buffered
import (
"image/color"
"github.com/hajimehoshi/ebiten/internal/affine"
"github.com/hajimehoshi/ebiten/internal/driver"
"github.com/hajimehoshi/ebiten/internal/shareable"
)
type Image struct {
img *shareable.Image
width int
height int
pixels []byte
needsToResolvePixels bool
}
func BeginFrame() error {
if err := shareable.BeginFrame(); err != nil {
return err
}
flushDelayedCommands()
return nil
}
func EndFrame() error {
return shareable.EndFrame()
}
func NewImage(width, height int, volatile bool) *Image {
i := &Image{}
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.img = shareable.NewImage(width, height, volatile)
i.width = width
i.height = height
})
delayedCommandsM.Unlock()
return i
}
delayedCommandsM.Unlock()
i.img = shareable.NewImage(width, height, volatile)
i.width = width
i.height = height
return i
}
func NewScreenFramebufferImage(width, height int) *Image {
i := &Image{}
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.img = shareable.NewScreenFramebufferImage(width, height)
i.width = width
i.height = height
})
delayedCommandsM.Unlock()
return i
}
delayedCommandsM.Unlock()
i.img = shareable.NewScreenFramebufferImage(width, height)
i.width = width
i.height = height
return i
}
func (i *Image) invalidatePendingPixels() {
i.pixels = nil
i.needsToResolvePixels = false
}
func (i *Image) resolvePendingPixels(keepPendingPixels bool) {
if !i.needsToResolvePixels {
return
}
i.img.ReplacePixels(i.pixels)
if !keepPendingPixels {
i.pixels = nil
}
i.needsToResolvePixels = false
}
func (i *Image) MarkDisposed() {
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.img.MarkDisposed()
})
delayedCommandsM.Unlock()
return
}
delayedCommandsM.Unlock()
i.invalidatePendingPixels()
}
func (i *Image) At(x, y int) (r, g, b, a byte) {
delayedCommandsM.Lock()
defer delayedCommandsM.Unlock()
if needsToDelayCommands {
panic("buffered: the command queue is not available yet at At")
}
// TODO: Use pending pixels
i.resolvePendingPixels(true)
return i.img.At(x, y)
}
func (i *Image) Set(x, y int, r, g, b, a byte) {
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.set(x, y, r, g, b, a)
})
delayedCommandsM.Unlock()
return
}
delayedCommandsM.Unlock()
i.set(x, y, r, g, b, a)
}
func (img *Image) set(x, y int, r, g, b, a byte) {
w, h := img.width, img.height
if img.pixels == nil {
pix := make([]byte, 4*w*h)
idx := 0
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
r, g, b, a := img.img.At(i, j)
pix[4*idx] = r
pix[4*idx+1] = g
pix[4*idx+2] = b
pix[4*idx+3] = a
idx++
}
}
img.pixels = pix
}
img.pixels[4*(x+y*w)] = r
img.pixels[4*(x+y*w)+1] = g
img.pixels[4*(x+y*w)+2] = b
img.pixels[4*(x+y*w)+3] = a
img.needsToResolvePixels = true
}
func (i *Image) Dump(name string) error {
delayedCommandsM.Lock()
defer delayedCommandsM.Unlock()
if needsToDelayCommands {
panic("buffered: the command queue is not available yet at Dump")
}
return i.img.Dump(name)
}
func (i *Image) Fill(clr color.RGBA) {
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.img.Fill(clr)
})
delayedCommandsM.Unlock()
return
}
delayedCommandsM.Unlock()
i.invalidatePendingPixels()
i.img.Fill(clr)
}
func (i *Image) ReplacePixels(pix []byte) {
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
copied := make([]byte, len(pix))
copy(copied, pix)
i.img.ReplacePixels(copied)
})
delayedCommandsM.Unlock()
return
}
delayedCommandsM.Unlock()
i.invalidatePendingPixels()
i.img.ReplacePixels(pix)
}
func (i *Image) DrawTriangles(src *Image, vertices []float32, indices []uint16, colorm *affine.ColorM, mode driver.CompositeMode, filter driver.Filter, address driver.Address) {
if i == src {
panic("buffered: Image.DrawTriangles: src must be different from the receiver")
}
delayedCommandsM.Lock()
if needsToDelayCommands {
delayedCommands = append(delayedCommands, func() {
i.img.DrawTriangles(src.img, vertices, indices, colorm, mode, filter, address)
})
delayedCommandsM.Unlock()
return
}
delayedCommandsM.Unlock()
src.resolvePendingPixels(true)
i.resolvePendingPixels(false)
i.img.DrawTriangles(src.img, vertices, indices, colorm, mode, filter, address)
}