mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
graphicsdriver/metal: Add a generalized 'draw' function
This is a preparation for rendering shaders. Updates #1165
This commit is contained in:
Hajime Hoshi
parent
28c638cb5b
commit
fe1cea533a
@ -641,103 +641,124 @@ func (g *Graphics) Reset() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (g *Graphics) Draw(dstID, srcID driver.ImageID, indexLen int, indexOffset int, mode driver.CompositeMode, colorM *affine.ColorM, filter driver.Filter, address driver.Address, sourceRegion driver.Region) error {
|
||||
// TODO: Use sourceRegion.
|
||||
func (g *Graphics) draw(rps mtl.RenderPipelineState, dst *Image, srcs [graphics.ShaderImageNum]*Image, indexLen int, indexOffset int, uniforms []interface{}) error {
|
||||
g.view.update()
|
||||
|
||||
rpd := mtl.RenderPassDescriptor{}
|
||||
// Even though the destination pixels are not used, mtl.LoadActionDontCare might cause glitches
|
||||
// (#1019). Always using mtl.LoadActionLoad is safe.
|
||||
rpd.ColorAttachments[0].LoadAction = mtl.LoadActionLoad
|
||||
rpd.ColorAttachments[0].StoreAction = mtl.StoreActionStore
|
||||
|
||||
var t mtl.Texture
|
||||
if dst.screen {
|
||||
if g.screenDrawable == (ca.MetalDrawable{}) {
|
||||
drawable := g.view.drawable()
|
||||
if drawable == (ca.MetalDrawable{}) {
|
||||
return nil
|
||||
}
|
||||
g.screenDrawable = drawable
|
||||
}
|
||||
t = g.screenDrawable.Texture()
|
||||
} else {
|
||||
t = dst.texture
|
||||
}
|
||||
rpd.ColorAttachments[0].Texture = t
|
||||
rpd.ColorAttachments[0].ClearColor = mtl.ClearColor{}
|
||||
|
||||
if g.cb == (mtl.CommandBuffer{}) {
|
||||
g.cb = g.cq.MakeCommandBuffer()
|
||||
}
|
||||
rce := g.cb.MakeRenderCommandEncoder(rpd)
|
||||
rce.SetRenderPipelineState(rps)
|
||||
|
||||
// In Metal, the NDC's Y direction (upward) and the framebuffer's Y direction (downward) don't
|
||||
// match. Then, the Y direction must be inverted.
|
||||
w, h := dst.viewportSize()
|
||||
rce.SetViewport(mtl.Viewport{
|
||||
OriginX: 0,
|
||||
OriginY: float64(h),
|
||||
Width: float64(w),
|
||||
Height: -float64(h),
|
||||
ZNear: -1,
|
||||
ZFar: 1,
|
||||
})
|
||||
rce.SetVertexBuffer(g.vb, 0, 0)
|
||||
|
||||
for i, u := range uniforms {
|
||||
switch u := u.(type) {
|
||||
case float32:
|
||||
rce.SetVertexBytes(unsafe.Pointer(&u), unsafe.Sizeof(u), i+1)
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&u), unsafe.Sizeof(u), i+1)
|
||||
case []float32:
|
||||
rce.SetVertexBytes(unsafe.Pointer(&u[0]), unsafe.Sizeof(u[0])*uintptr(len(u)), i+1)
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&u[0]), unsafe.Sizeof(u[0])*uintptr(len(u)), i+1)
|
||||
default:
|
||||
return fmt.Errorf("metal: unexpected uniform value: %[1]v (type: %[1]T)", u)
|
||||
}
|
||||
}
|
||||
|
||||
for i, src := range srcs {
|
||||
if src != nil {
|
||||
rce.SetFragmentTexture(src.texture, i)
|
||||
} else {
|
||||
rce.SetFragmentTexture(mtl.Texture{}, i)
|
||||
}
|
||||
}
|
||||
rce.DrawIndexedPrimitives(mtl.PrimitiveTypeTriangle, indexLen, mtl.IndexTypeUInt16, g.ib, indexOffset*2)
|
||||
rce.EndEncoding()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (g *Graphics) Draw(dstID, srcID driver.ImageID, indexLen int, indexOffset int, mode driver.CompositeMode, colorM *affine.ColorM, filter driver.Filter, address driver.Address, sourceRegion driver.Region) error {
|
||||
dst := g.images[dstID]
|
||||
src := g.images[srcID]
|
||||
srcs := [graphics.ShaderImageNum]*Image{g.images[srcID]}
|
||||
|
||||
var rps mtl.RenderPipelineState
|
||||
if dst.screen && filter == driver.FilterScreen {
|
||||
rps = g.screenRPS
|
||||
} else {
|
||||
rps = g.rpss[rpsKey{
|
||||
screen: dst.screen,
|
||||
useColorM: colorM != nil,
|
||||
filter: filter,
|
||||
address: address,
|
||||
compositeMode: mode,
|
||||
}]
|
||||
}
|
||||
|
||||
if err := g.t.Call(func() error {
|
||||
g.view.update()
|
||||
|
||||
rpd := mtl.RenderPassDescriptor{}
|
||||
// Even though the destination pixels are not used, mtl.LoadActionDontCare might cause glitches
|
||||
// (#1019). Always using mtl.LoadActionLoad is safe.
|
||||
rpd.ColorAttachments[0].LoadAction = mtl.LoadActionLoad
|
||||
rpd.ColorAttachments[0].StoreAction = mtl.StoreActionStore
|
||||
|
||||
var t mtl.Texture
|
||||
if dst.screen {
|
||||
if g.screenDrawable == (ca.MetalDrawable{}) {
|
||||
drawable := g.view.drawable()
|
||||
if drawable == (ca.MetalDrawable{}) {
|
||||
return nil
|
||||
}
|
||||
g.screenDrawable = drawable
|
||||
}
|
||||
t = g.screenDrawable.Texture()
|
||||
} else {
|
||||
t = dst.texture
|
||||
}
|
||||
rpd.ColorAttachments[0].Texture = t
|
||||
rpd.ColorAttachments[0].ClearColor = mtl.ClearColor{}
|
||||
|
||||
if g.cb == (mtl.CommandBuffer{}) {
|
||||
g.cb = g.cq.MakeCommandBuffer()
|
||||
}
|
||||
rce := g.cb.MakeRenderCommandEncoder(rpd)
|
||||
|
||||
if dst.screen && filter == driver.FilterScreen {
|
||||
rce.SetRenderPipelineState(g.screenRPS)
|
||||
} else {
|
||||
rce.SetRenderPipelineState(g.rpss[rpsKey{
|
||||
screen: dst.screen,
|
||||
useColorM: colorM != nil,
|
||||
filter: filter,
|
||||
address: address,
|
||||
compositeMode: mode,
|
||||
}])
|
||||
}
|
||||
// In Metal, the NDC's Y direction (upward) and the framebuffer's Y direction (downward) don't
|
||||
// match. Then, the Y direction must be inverted.
|
||||
w, h := dst.viewportSize()
|
||||
rce.SetViewport(mtl.Viewport{
|
||||
OriginX: 0,
|
||||
OriginY: float64(h),
|
||||
Width: float64(w),
|
||||
Height: -float64(h),
|
||||
ZNear: -1,
|
||||
ZFar: 1,
|
||||
})
|
||||
rce.SetVertexBuffer(g.vb, 0, 0)
|
||||
|
||||
viewportSize := [...]float32{float32(w), float32(h)}
|
||||
rce.SetVertexBytes(unsafe.Pointer(&viewportSize[0]), unsafe.Sizeof(viewportSize), 1)
|
||||
|
||||
sourceSize := [...]float32{
|
||||
float32(graphics.InternalImageSize(src.width)),
|
||||
float32(graphics.InternalImageSize(src.height)),
|
||||
sourceSize := []float32{0, 0}
|
||||
if filter != driver.FilterNearest {
|
||||
sourceSize[0] = float32(graphics.InternalImageSize(srcs[0].width))
|
||||
sourceSize[1] = float32(graphics.InternalImageSize(srcs[0].height))
|
||||
}
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&sourceSize[0]), unsafe.Sizeof(sourceSize), 2)
|
||||
|
||||
esBody, esTranslate := colorM.UnsafeElements()
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&esBody[0]), unsafe.Sizeof(esBody[0])*uintptr(len(esBody)), 3)
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&esTranslate[0]), unsafe.Sizeof(esTranslate[0])*uintptr(len(esTranslate)), 4)
|
||||
|
||||
scale := float32(dst.width) / float32(src.width)
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&scale), unsafe.Sizeof(scale), 5)
|
||||
|
||||
sr := [...]float32{
|
||||
sourceRegion.X,
|
||||
sourceRegion.Y,
|
||||
sourceRegion.X + sourceRegion.Width,
|
||||
sourceRegion.Y + sourceRegion.Height,
|
||||
scale := float32(0)
|
||||
if filter == driver.FilterScreen {
|
||||
scale = float32(dst.width) / float32(srcs[0].width)
|
||||
}
|
||||
rce.SetFragmentBytes(unsafe.Pointer(&sr[0]), unsafe.Sizeof(sr), 6)
|
||||
|
||||
if src != nil {
|
||||
rce.SetFragmentTexture(src.texture, 0)
|
||||
} else {
|
||||
rce.SetFragmentTexture(mtl.Texture{}, 0)
|
||||
uniforms := []interface{}{
|
||||
[]float32{float32(w), float32(h)},
|
||||
sourceSize,
|
||||
esBody,
|
||||
esTranslate,
|
||||
scale,
|
||||
[]float32{
|
||||
sourceRegion.X,
|
||||
sourceRegion.Y,
|
||||
sourceRegion.X + sourceRegion.Width,
|
||||
sourceRegion.Y + sourceRegion.Height,
|
||||
},
|
||||
}
|
||||
if err := g.draw(rps, dst, srcs, indexLen, indexOffset, uniforms); err != nil {
|
||||
return err
|
||||
}
|
||||
rce.DrawIndexedPrimitives(mtl.PrimitiveTypeTriangle, indexLen, mtl.IndexTypeUInt16, g.ib, indexOffset*2)
|
||||
rce.EndEncoding()
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user