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Merge ea462f4cb6 into 7524f990ba

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Bertrand Jung 2024-06-22 14:23:46 +03:00 committed by GitHub
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130
examples/mrt/main.go Normal file
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@ -0,0 +1,130 @@
// Copyright 2024 The Ebitengine 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 main
import (
"fmt"
"image"
_ "image/jpeg"
"log"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
)
const (
dstSize = 128
screenWidth = dstSize * 2
screenHeight = dstSize * 2
)
var (
dsts = [8]*ebiten.Image{
ebiten.NewImageWithOptions(image.Rect(0, 0, dstSize, dstSize), &ebiten.NewImageOptions{
Unmanaged: true,
}),
ebiten.NewImageWithOptions(image.Rect(0, 0, dstSize, dstSize), &ebiten.NewImageOptions{
Unmanaged: true,
}),
ebiten.NewImageWithOptions(image.Rect(0, 0, dstSize, dstSize), &ebiten.NewImageOptions{
Unmanaged: true,
}),
ebiten.NewImageWithOptions(image.Rect(0, 0, dstSize, dstSize), &ebiten.NewImageOptions{
Unmanaged: true,
}),
}
shaderSrc = []byte(
`
//kage:units pixels
package main
func Fragment(dst vec4, src vec2, color vec4) (vec4, vec4, vec4, vec4) {
return vec4(1,0,0,1), vec4(0,1,0,1), vec4(0,0,1,1), vec4(1,0,1,1)
}
`)
s *ebiten.Shader
)
func init() {
var err error
s, err = ebiten.NewShader(shaderSrc)
if err != nil {
log.Fatal(err)
}
}
type Game struct {
}
func (g *Game) Update() error {
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
vertices := []ebiten.Vertex{
{
DstX: 0,
DstY: 0,
},
{
DstX: dstSize,
DstY: 0,
},
{
DstX: 0,
DstY: dstSize,
},
{
DstX: dstSize,
DstY: dstSize,
},
}
indices := []uint16{0, 1, 2, 1, 2, 3}
ebiten.DrawTrianglesShaderMRT(dsts, vertices, indices, s, nil)
// Dst 0
screen.DrawImage(dsts[0], nil)
// Dst 1
opts := &ebiten.DrawImageOptions{}
opts.GeoM.Translate(dstSize, 0)
screen.DrawImage(dsts[1], opts)
// Dst 2
opts.GeoM.Reset()
opts.GeoM.Translate(0, dstSize)
screen.DrawImage(dsts[2], opts)
// Dst 3
opts.GeoM.Reset()
opts.GeoM.Translate(dstSize, dstSize)
screen.DrawImage(dsts[3], opts)
ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %.2f", ebiten.ActualFPS()))
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
return screenWidth, screenHeight
}
func main() {
ebiten.SetWindowSize(screenWidth, screenHeight)
ebiten.SetVsyncEnabled(false)
ebiten.SetWindowTitle("MRT (Ebitengine Demo)")
if err := ebiten.RunGameWithOptions(&Game{}, &ebiten.RunGameOptions{
GraphicsLibrary: ebiten.GraphicsLibraryDirectX,
}); err != nil {
log.Fatal(err)
}
}

133
image.go
View File

@ -705,6 +705,139 @@ func (i *Image) DrawTrianglesShader(vertices []Vertex, indices []uint16, shader
i.image.DrawTriangles(imgs, vs, is, blend, i.adjustedBounds(), srcRegions, shader.shader, i.tmpUniforms, graphicsdriver.FillRule(options.FillRule), true, options.AntiAlias)
}
// DrawTrianglesShader draws triangles with the specified vertices and their indices with the specified shader.
//
// Vertex contains color values, which can be interpreted for any purpose by the shader.
//
// For the details about the shader, see https://ebitengine.org/en/documents/shader.html.
//
// If the shader unit is texels, one of the specified image is non-nil and its size is different from (width, height),
// DrawTrianglesShader panics.
// If one of the specified image is non-nil and is disposed, DrawTrianglesShader panics.
//
// If len(vertices) is more than MaxVertexCount, the exceeding part is ignored.
//
// If len(indices) is not multiple of 3, DrawTrianglesShader panics.
//
// If a value in indices is out of range of vertices, or not less than MaxVertexCount, DrawTrianglesShader panics.
//
// When a specified image is non-nil and is disposed, DrawTrianglesShader panics.
//
// If a specified uniform variable's length or type doesn't match with an expected one, DrawTrianglesShader panics.
//
// Even if a result is an invalid color as a premultiplied-alpha color, i.e. an alpha value exceeds other color values,
// the value is kept and is not clamped.
//
// When the image i is disposed, DrawTrianglesShader does nothing.
func DrawTrianglesShaderMRT(dsts [graphics.ShaderDstImageCount]*Image, vertices []Vertex, indices []uint16, shader *Shader, options *DrawTrianglesShaderOptions) {
var dstImgs [graphics.ShaderDstImageCount]*ui.Image
var firstDst *Image
for i, dst := range dsts {
if dst == nil {
continue
}
dst.copyCheck()
if dst.isDisposed() {
panic("ebiten: the destination images given to DrawTrianglesShaderMRT must not be disposed")
}
if firstDst == nil {
firstDst = dst
}
dstImgs[i] = dst.image
}
if shader.isDisposed() {
panic("ebiten: the given shader to DrawTrianglesShaderMRT must not be disposed")
}
if len(vertices) > graphicscommand.MaxVertexCount {
// The last part cannot be specified by indices. Just omit them.
vertices = vertices[:graphicscommand.MaxVertexCount]
}
if len(indices)%3 != 0 {
panic("ebiten: len(indices) % 3 must be 0")
}
for i, idx := range indices {
if int(idx) >= len(vertices) {
panic(fmt.Sprintf("ebiten: indices[%d] must be less than len(vertices) (%d) but was %d", i, len(vertices), idx))
}
}
if options == nil {
options = &DrawTrianglesShaderOptions{}
}
var blend graphicsdriver.Blend
if options.CompositeMode == CompositeModeCustom {
blend = options.Blend.internalBlend()
} else {
blend = options.CompositeMode.blend().internalBlend()
}
dst := firstDst
vs := dst.ensureTmpVertices(len(vertices) * graphics.VertexFloatCount)
src := options.Images[0]
for i, v := range vertices {
dx, dy := dst.adjustPositionF32(v.DstX, v.DstY)
vs[i*graphics.VertexFloatCount] = dx
vs[i*graphics.VertexFloatCount+1] = dy
sx, sy := v.SrcX, v.SrcY
if src != nil {
sx, sy = src.adjustPositionF32(sx, sy)
}
vs[i*graphics.VertexFloatCount+2] = sx
vs[i*graphics.VertexFloatCount+3] = sy
vs[i*graphics.VertexFloatCount+4] = v.ColorR
vs[i*graphics.VertexFloatCount+5] = v.ColorG
vs[i*graphics.VertexFloatCount+6] = v.ColorB
vs[i*graphics.VertexFloatCount+7] = v.ColorA
}
is := make([]uint32, len(indices))
for i := range is {
is[i] = uint32(indices[i])
}
var srcImgs [graphics.ShaderSrcImageCount]*ui.Image
var imgSize image.Point
for i, img := range options.Images {
if img == nil {
continue
}
if img.isDisposed() {
panic("ebiten: the given image to DrawTrianglesShader must not be disposed")
}
if shader.unit == shaderir.Texels {
if i == 0 {
imgSize = img.Bounds().Size()
} else {
// TODO: Check imgw > 0 && imgh > 0
if img.Bounds().Size() != imgSize {
panic("ebiten: all the source images must be the same size with the rectangle")
}
}
}
srcImgs[i] = img.image
}
var srcRegions [graphics.ShaderSrcImageCount]image.Rectangle
for i, img := range options.Images {
if img == nil {
continue
}
srcRegions[i] = img.adjustedBounds()
}
for _, dst := range dsts {
if dst == nil {
continue
}
dst.tmpUniforms = dst.tmpUniforms[:0]
dst.tmpUniforms = shader.appendUniforms(dst.tmpUniforms, options.Uniforms)
}
ui.DrawTrianglesMRT(dstImgs, srcImgs, vs, is, blend, dst.adjustedBounds(), srcRegions, shader.shader, dst.tmpUniforms, graphicsdriver.FillRule(options.FillRule), true, options.AntiAlias)
}
// DrawRectShaderOptions represents options for DrawRectShader.
type DrawRectShaderOptions struct {
// GeoM is a geometry matrix to draw.

130
internal/atlas/image.go
View File

@ -431,6 +431,27 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertice
i.drawTriangles(srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
}
func DrawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
backendsM.Lock()
defer backendsM.Unlock()
if !inFrame {
vs := make([]float32, len(vertices))
copy(vs, vertices)
is := make([]uint32, len(indices))
copy(is, indices)
us := make([]uint32, len(uniforms))
copy(us, uniforms)
appendDeferred(func() {
drawTrianglesMRT(dsts, srcs, vs, is, blend, dstRegion, srcRegions, shader, us, fillRule)
})
return
}
drawTrianglesMRT(dsts, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
}
func (i *Image) drawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
if len(vertices) == 0 {
return
@ -530,6 +551,115 @@ func (i *Image) drawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertice
}
}
func drawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
if len(vertices) == 0 {
return
}
backends := make([]*backend, 0, len(srcs))
for _, src := range srcs {
if src == nil {
continue
}
if src.backend == nil {
// It is possible to spcify i.backend as a forbidden backend, but this might prevent a good allocation for a source image.
// If the backend becomes the same as i's, i's backend will be changed at ensureIsolatedFromSource.
src.allocate(nil, true)
}
backends = append(backends, src.backend)
src.backend.sourceInThisFrame = true
}
var firstDst *Image
var dstImgs [graphics.ShaderDstImageCount]*graphicscommand.Image
for i, dst := range dsts {
if dst == nil {
continue
}
dst.ensureIsolatedFromSource(backends)
firstDst = dst
dstImgs[i] = dst.backend.image
}
for _, src := range srcs {
// Compare i and source images after ensuring i is not on an atlas, or
// i and a source image might share the same atlas even though i != src.
for _, dst := range dsts {
if src != nil && dst != nil && dst.backend.image == src.backend.image {
panic("atlas: DrawTrianglesMRT: source must be different from the destination images")
}
}
}
r := firstDst.regionWithPadding()
// TODO: Check if dstRegion does not to violate the region.
dstRegion = dstRegion.Add(r.Min)
dx, dy := float32(r.Min.X), float32(r.Min.Y)
var oxf, oyf float32
if srcs[0] != nil {
r := srcs[0].regionWithPadding()
oxf, oyf = float32(r.Min.X), float32(r.Min.Y)
n := len(vertices)
for i := 0; i < n; i += graphics.VertexFloatCount {
vertices[i] += dx
vertices[i+1] += dy
vertices[i+2] += oxf
vertices[i+3] += oyf
}
if shader.ir.Unit == shaderir.Texels {
sw, sh := srcs[0].backend.image.InternalSize()
swf, shf := float32(sw), float32(sh)
for i := 0; i < n; i += graphics.VertexFloatCount {
vertices[i+2] /= swf
vertices[i+3] /= shf
}
}
} else {
n := len(vertices)
for i := 0; i < n; i += graphics.VertexFloatCount {
vertices[i] += dx
vertices[i+1] += dy
}
}
for i, src := range srcs {
if src == nil {
continue
}
// A source region can be deliberately empty when this is not needed in order to avoid unexpected
// performance issue (#1293).
if srcRegions[i].Empty() {
continue
}
r := src.regionWithPadding()
srcRegions[i] = srcRegions[i].Add(r.Min)
}
var srcImgs [graphics.ShaderSrcImageCount]*graphicscommand.Image
for i, src := range srcs {
if src == nil {
continue
}
srcImgs[i] = src.backend.image
}
graphicscommand.DrawTrianglesMRT(dstImgs, srcImgs, vertices, indices, blend, dstRegion, srcRegions, shader.ensureShader(), uniforms, fillRule)
for _, src := range srcs {
if src == nil {
continue
}
if !src.isOnSourceBackend() && src.canBePutOnAtlas() {
// src might already registered, but assigning it again is not harmful.
imagesToPutOnSourceBackend.add(src)
}
}
}
// WritePixels replaces the pixels on the image.
func (i *Image) WritePixels(pix []byte, region image.Rectangle) {
backendsM.Lock()

45
internal/buffered/image.go
View File

@ -211,6 +211,51 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertice
i.pixels = nil
}
func DrawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *atlas.Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
for _, src := range srcs {
for _, dst := range dsts {
if dst == nil {
continue
}
if dst == src {
panic("buffered: DrawTrianglesMRT: source images must be different from the destination images")
}
}
if src != nil {
// src's pixels have to be synced between CPU and GPU,
// but doesn't have to be cleared since src is not modified in this function.
src.syncPixelsIfNeeded()
}
}
var dstImgs [graphics.ShaderDstImageCount]*atlas.Image
for i, dst := range dsts {
if dst == nil {
continue
}
dst.syncPixelsIfNeeded()
dstImgs[i] = dst.img
}
var srcImgs [graphics.ShaderSrcImageCount]*atlas.Image
for i, src := range srcs {
if src == nil {
continue
}
srcImgs[i] = src.img
}
atlas.DrawTrianglesMRT(dstImgs, srcImgs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
// After rendering, the pixel cache is no longer valid.
for _, dst := range dsts {
if dst == nil {
continue
}
dst.pixels = nil
}
}
// syncPixelsIfNeeded syncs the pixels between CPU and GPU.
// After syncPixelsIfNeeded, dotsBuffer is cleared, but pixels might remain.
func (i *Image) syncPixelsIfNeeded() {

5
internal/graphics/vertex.go
View File

@ -16,6 +16,11 @@ package graphics
const (
ShaderSrcImageCount = 4
// The minimum guaranteed value for the number of target seems to be 8
// OpenGL(8): https://www.khronos.org/opengl/wiki/Framebuffer_Object#Framebuffer_Object_Structure
// DirectX11(8): https://learn.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-output-merger-stage#multiple-rendertargets-overview
// Metal(8): Page 7 of 15: https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf
ShaderDstImageCount = 8
// PreservedUniformVariablesCount represents the number of preserved uniform variables.
// Any shaders in Ebitengine must have these uniform variables.

42
internal/graphicscommand/command.go
View File

@ -61,7 +61,7 @@ func (p *drawTrianglesCommandPool) put(v *drawTrianglesCommand) {
// drawTrianglesCommand represents a drawing command to draw an image on another image.
type drawTrianglesCommand struct {
dst *Image
dsts [graphics.ShaderDstImageCount]*Image
srcs [graphics.ShaderSrcImageCount]*Image
vertices []float32
blend graphicsdriver.Blend
@ -81,9 +81,16 @@ func (c *drawTrianglesCommand) String() string {
c.blend.BlendOperationRGB,
c.blend.BlendOperationAlpha)
dst := fmt.Sprintf("%d", c.dst.id)
if c.dst.screen {
dst += " (screen)"
var dststrs [graphics.ShaderDstImageCount]string
for i, dst := range c.dsts {
if dst == nil {
dststrs[i] = "(nil)"
continue
}
dststrs[i] = fmt.Sprintf("%d", dst.id)
if dst.screen {
dststrs[i] += " (screen)"
}
}
var srcstrs [graphics.ShaderSrcImageCount]string
@ -98,7 +105,7 @@ func (c *drawTrianglesCommand) String() string {
}
}
return fmt.Sprintf("draw-triangles: dst: %s <- src: [%s], num of dst regions: %d, num of indices: %d, blend: %s, fill rule: %s, shader id: %d", dst, strings.Join(srcstrs[:], ", "), len(c.dstRegions), c.numIndices(), blend, c.fillRule, c.shader.id)
return fmt.Sprintf("draw-triangles: dst: [%s] <- src: [%s], num of dst regions: %d, num of indices: %d, blend: %s, fill rule: %s, shader id: %d", strings.Join(dststrs[:], ", "), strings.Join(srcstrs[:], ", "), len(c.dstRegions), c.numIndices(), blend, c.fillRule, c.shader.id)
}
// Exec executes the drawTrianglesCommand.
@ -108,16 +115,25 @@ func (c *drawTrianglesCommand) Exec(commandQueue *commandQueue, graphicsDriver g
return nil
}
var imgs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID
for i, src := range c.srcs {
if src == nil {
imgs[i] = graphicsdriver.InvalidImageID
var dsts [graphics.ShaderDstImageCount]graphicsdriver.ImageID
for i, dst := range c.dsts {
if dst == nil {
dsts[i] = graphicsdriver.InvalidImageID
continue
}
imgs[i] = src.image.ID()
dsts[i] = dst.image.ID()
}
return graphicsDriver.DrawTriangles(c.dst.image.ID(), imgs, c.shader.shader.ID(), c.dstRegions, indexOffset, c.blend, c.uniforms, c.fillRule)
var srcs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID
for i, src := range c.srcs {
if src == nil {
srcs[i] = graphicsdriver.InvalidImageID
continue
}
srcs[i] = src.image.ID()
}
return graphicsDriver.DrawTriangles(dsts, srcs, c.shader.shader.ID(), c.dstRegions, indexOffset, c.blend, c.uniforms, c.fillRule)
}
func (c *drawTrianglesCommand) NeedsSync() bool {
@ -142,7 +158,7 @@ func (c *drawTrianglesCommand) setVertices(vertices []float32) {
// CanMergeWithDrawTrianglesCommand returns a boolean value indicating whether the other drawTrianglesCommand can be merged
// with the drawTrianglesCommand c.
func (c *drawTrianglesCommand) CanMergeWithDrawTrianglesCommand(dst *Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, blend graphicsdriver.Blend, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) bool {
func (c *drawTrianglesCommand) CanMergeWithDrawTrianglesCommand(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, blend graphicsdriver.Blend, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) bool {
if c.shader != shader {
return false
}
@ -154,7 +170,7 @@ func (c *drawTrianglesCommand) CanMergeWithDrawTrianglesCommand(dst *Image, srcs
return false
}
}
if c.dst != dst {
if c.dsts != dsts {
return false
}
if c.srcs != srcs {

23
internal/graphicscommand/commandqueue.go
View File

@ -105,7 +105,7 @@ func mustUseDifferentVertexBuffer(nextNumVertexFloats int) bool {
}
// EnqueueDrawTrianglesCommand enqueues a drawing-image command.
func (q *commandQueue) EnqueueDrawTrianglesCommand(dst *Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
func (q *commandQueue) EnqueueDrawTrianglesCommand(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
if len(vertices) > maxVertexFloatCount {
panic(fmt.Sprintf("graphicscommand: len(vertices) must equal to or less than %d but was %d", maxVertexFloatCount, len(vertices)))
}
@ -125,7 +125,7 @@ func (q *commandQueue) EnqueueDrawTrianglesCommand(dst *Image, srcs [graphics.Sh
// prependPreservedUniforms not only prepends values to the given slice but also creates a new slice.
// Allocating a new slice is necessary to make EnqueueDrawTrianglesCommand safe so far.
// TODO: This might cause a performance issue (#2601).
uniforms = q.prependPreservedUniforms(uniforms, shader, dst, srcs, dstRegion, srcRegions)
uniforms = q.prependPreservedUniforms(uniforms, shader, dsts, srcs, dstRegion, srcRegions)
// Remove unused uniform variables so that more commands can be merged.
shader.ir.FilterUniformVariables(uniforms)
@ -133,7 +133,7 @@ func (q *commandQueue) EnqueueDrawTrianglesCommand(dst *Image, srcs [graphics.Sh
// TODO: If dst is the screen, reorder the command to be the last.
if !split && 0 < len(q.commands) {
if last, ok := q.commands[len(q.commands)-1].(*drawTrianglesCommand); ok {
if last.CanMergeWithDrawTrianglesCommand(dst, srcs, vertices, blend, shader, uniforms, fillRule) {
if last.CanMergeWithDrawTrianglesCommand(dsts, srcs, vertices, blend, shader, uniforms, fillRule) {
last.setVertices(q.lastVertices(len(vertices) + last.numVertices()))
if last.dstRegions[len(last.dstRegions)-1].Region == dstRegion {
last.dstRegions[len(last.dstRegions)-1].IndexCount += len(indices)
@ -149,7 +149,7 @@ func (q *commandQueue) EnqueueDrawTrianglesCommand(dst *Image, srcs [graphics.Sh
}
c := q.drawTrianglesCommandPool.get()
c.dst = dst
c.dsts = dsts
c.srcs = srcs
c.vertices = q.lastVertices(len(vertices))
c.blend = blend
@ -324,13 +324,20 @@ func imageRectangleToRectangleF32(r image.Rectangle) rectangleF32 {
}
}
func (q *commandQueue) prependPreservedUniforms(uniforms []uint32, shader *Shader, dst *Image, srcs [graphics.ShaderSrcImageCount]*Image, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle) []uint32 {
func (q *commandQueue) prependPreservedUniforms(uniforms []uint32, shader *Shader, dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle) []uint32 {
origUniforms := uniforms
uniforms = q.uint32sBuffer.alloc(len(origUniforms) + graphics.PreservedUniformUint32Count)
copy(uniforms[graphics.PreservedUniformUint32Count:], origUniforms)
// Set the destination texture size.
dw, dh := dst.InternalSize()
var firstDst *Image
for _, dst := range dsts {
if dst != nil {
firstDst = dst
break
}
}
dw, dh := firstDst.InternalSize()
uniforms[0] = math.Float32bits(float32(dw))
uniforms[1] = math.Float32bits(float32(dh))
uniformIndex := 2
@ -469,11 +476,11 @@ func (c *commandQueueManager) putCommandQueue(commandQueue *commandQueue) {
c.pool.put(commandQueue)
}
func (c *commandQueueManager) enqueueDrawTrianglesCommand(dst *Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
func (c *commandQueueManager) enqueueDrawTrianglesCommand(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
if c.current == nil {
c.current, _ = c.pool.get()
}
c.current.EnqueueDrawTrianglesCommand(dst, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
c.current.EnqueueDrawTrianglesCommand(dsts, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
}
func (c *commandQueueManager) flush(graphicsDriver graphicsdriver.Graphics, endFrame bool) error {

43
internal/graphicscommand/image.go
View File

@ -142,7 +142,48 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertice
}
i.flushBufferedWritePixels()
theCommandQueueManager.enqueueDrawTrianglesCommand(i, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
theCommandQueueManager.enqueueDrawTrianglesCommand([graphics.ShaderDstImageCount]*Image{i}, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
}
// DrawTriangles draws triangles with the given image.
//
// The vertex floats are:
//
// 0: Destination X in pixels
// 1: Destination Y in pixels
// 2: Source X in texels
// 3: Source Y in texels
// 4: Color R [0.0-1.0]
// 5: Color G
// 6: Color B
// 7: Color Y
//
// src and shader are exclusive and only either is non-nil.
//
// The elements that index is in between 2 and 7 are used for the source images.
// The source image is 1) src argument if non-nil, or 2) an image value in the uniform variables if it exists.
// If there are multiple images in the uniform variables, the smallest ID's value is adopted.
//
// If the source image is not specified, i.e., src is nil and there is no image in the uniform variables, the
// elements for the source image are not used.
func DrawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule) {
for _, src := range srcs {
if src == nil {
continue
}
if src.screen {
panic("graphicscommand: the screen image cannot be the rendering des")
}
src.flushBufferedWritePixels()
}
for _, dst := range dsts {
if dst == nil {
continue
}
dst.flushBufferedWritePixels()
}
theCommandQueueManager.enqueueDrawTrianglesCommand(dsts, srcs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
}
// ReadPixels reads the image's pixels.

114
internal/graphicsdriver/directx/graphics11_windows.go
View File

@ -514,13 +514,102 @@ func (g *graphics11) removeShader(s *shader11) {
delete(g.shaders, s.id)
}
func (g *graphics11) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
func (g *graphics11) setAsRenderTargets(dsts []*image11, useStencil bool) error {
var rtvs []*_ID3D11RenderTargetView
var dsv *_ID3D11DepthStencilView
for _, dst := range dsts {
// Ignore a nil image in case of MRT
if dst == nil {
rtvs = append(rtvs, nil)
continue
}
if dst.renderTargetView == nil {
rtv, err := g.device.CreateRenderTargetView(unsafe.Pointer(dst.texture), nil)
if err != nil {
return err
}
dst.renderTargetView = rtv
}
rtvs = append(rtvs, dst.renderTargetView)
if !useStencil || dsv != nil {
continue
}
if dst.screen {
return fmt.Errorf("directx: a stencil buffer is not available for a screen image")
}
if dst.stencil == nil {
w, h := dst.internalSize()
s, err := g.device.CreateTexture2D(&_D3D11_TEXTURE2D_DESC{
Width: uint32(w),
Height: uint32(h),
MipLevels: 0,
ArraySize: 1,
Format: _DXGI_FORMAT_D24_UNORM_S8_UINT,
SampleDesc: _DXGI_SAMPLE_DESC{
Count: 1,
Quality: 0,
},
Usage: _D3D11_USAGE_DEFAULT,
BindFlags: uint32(_D3D11_BIND_DEPTH_STENCIL),
CPUAccessFlags: 0,
MiscFlags: 0,
}, nil)
if err != nil {
return err
}
dst.stencil = s
}
if dst.stencilView == nil {
sv, err := g.device.CreateDepthStencilView(unsafe.Pointer(dst.stencil), nil)
if err != nil {
return err
}
dst.stencilView = sv
}
dsv = dst.stencilView
}
g.deviceContext.OMSetRenderTargets(rtvs, dsv)
if useStencil {
g.deviceContext.ClearDepthStencilView(dsv, uint8(_D3D11_CLEAR_STENCIL), 0, 0)
}
return nil
}
func (g *graphics11) DrawTriangles(dstIDs [graphics.ShaderDstImageCount]graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
// Remove bound textures first. This is needed to avoid warnings on the debugger.
g.deviceContext.OMSetRenderTargets([]*_ID3D11RenderTargetView{nil}, nil)
srvs := [graphics.ShaderSrcImageCount]*_ID3D11ShaderResourceView{}
g.deviceContext.PSSetShaderResources(0, srvs[:])
dst := g.images[dstID]
var dsts [graphics.ShaderDstImageCount]*image11
var vp _D3D11_VIEWPORT
var targetCount int
firstTarget := -1
for i, id := range dstIDs {
img := g.images[id]
if img == nil {
continue
}
if firstTarget == -1 {
firstTarget = i
}
dsts[i] = img
w, h := img.internalSize()
vp = _D3D11_VIEWPORT{
TopLeftX: 0,
TopLeftY: 0,
Width: float32(w),
Height: float32(h),
MinDepth: 0,
MaxDepth: 1,
}
targetCount++
}
var srcs [graphics.ShaderSrcImageCount]*image11
for i, id := range srcIDs {
img := g.images[id]
@ -530,19 +619,16 @@ func (g *graphics11) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphic
srcs[i] = img
}
w, h := dst.internalSize()
g.deviceContext.RSSetViewports([]_D3D11_VIEWPORT{
{
TopLeftX: 0,
TopLeftY: 0,
Width: float32(w),
Height: float32(h),
MinDepth: 0,
MaxDepth: 1,
},
})
// If the number of targets is more than one, or if the only target is not the first one, then
// it is safe to assume that MRT is used.
// Also, it only matters in order to specify empty targets/viewports when not all slots are
// being filled, even though it's not a MRT scenario.
if targetCount > 1 || firstTarget > 0 {
targetCount = graphics.ShaderDstImageCount
}
if err := dst.setAsRenderTarget(fillRule != graphicsdriver.FillRuleFillAll); err != nil {
g.deviceContext.RSSetViewports([]_D3D11_VIEWPORT{vp})
if err := g.setAsRenderTargets(dsts[:targetCount], fillRule != graphicsdriver.FillRuleFillAll); err != nil {
return err
}

193
internal/graphicsdriver/directx/graphics12_windows.go
View File

@ -40,13 +40,14 @@ func (r *resourceWithSize) release() {
}
type graphics12 struct {
debug *_ID3D12Debug
device *_ID3D12Device
commandQueue *_ID3D12CommandQueue
rtvDescriptorHeap *_ID3D12DescriptorHeap
rtvDescriptorSize uint32
renderTargets [frameCount]*_ID3D12Resource
framePipelineToken _D3D12XBOX_FRAME_PIPELINE_TOKEN
debug *_ID3D12Debug
device *_ID3D12Device
commandQueue *_ID3D12CommandQueue
rtvDescriptorHeap *_ID3D12DescriptorHeap
rtvEmptyDescriptorHeap *_ID3D12DescriptorHeap
rtvDescriptorSize uint32
renderTargets [frameCount]*_ID3D12Resource
framePipelineToken _D3D12XBOX_FRAME_PIPELINE_TOKEN
fence *_ID3D12Fence
fenceValues [frameCount]uint64
@ -418,6 +419,34 @@ func (g *graphics12) initializeMembers(frameIndex int) (ferr error) {
g.rtvDescriptorHeap = nil
}
}()
// Create a descriptor heap for empty RTV in case of MRT with empty locations.
h, err = g.device.CreateDescriptorHeap(&_D3D12_DESCRIPTOR_HEAP_DESC{
Type: _D3D12_DESCRIPTOR_HEAP_TYPE_RTV,
NumDescriptors: frameCount,
Flags: _D3D12_DESCRIPTOR_HEAP_FLAG_NONE,
NodeMask: 0,
})
if err != nil {
return err
}
g.rtvEmptyDescriptorHeap = h
defer func() {
if ferr != nil {
g.rtvEmptyDescriptorHeap.Release()
g.rtvEmptyDescriptorHeap = nil
}
}()
hnd, err := g.rtvEmptyDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
if err != nil {
return err
}
// Create an empty render target for empty destinations at DrawTriangles
g.device.CreateRenderTargetView(nil, &_D3D12_RENDER_TARGET_VIEW_DESC{
Format: _DXGI_FORMAT_R8G8B8A8_UNORM,
ViewDimension: _D3D12_RTV_DIMENSION_TEXTURE2D,
}, hnd)
g.rtvDescriptorSize = g.device.GetDescriptorHandleIncrementSize(_D3D12_DESCRIPTOR_HEAP_TYPE_RTV)
if err := g.pipelineStates.initialize(g.device); err != nil {
@ -1081,7 +1110,82 @@ func (g *graphics12) NewShader(program *shaderir.Program) (graphicsdriver.Shader
return s, nil
}
func (g *graphics12) DrawTriangles(dstID graphicsdriver.ImageID, srcs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
func (g *graphics12) setAsRenderTargets(dsts []*image12, useStencil bool) error {
var rtvs []_D3D12_CPU_DESCRIPTOR_HANDLE
var dsv *_D3D12_CPU_DESCRIPTOR_HANDLE
for i, img := range dsts {
// Ignore a nil image in case of MRT
if img == nil {
_ = i
rtv, err := g.rtvEmptyDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
if err != nil {
return err
}
rtv.Offset(int32(g.frameIndex), g.rtvDescriptorSize)
rtvs = append(rtvs, rtv)
continue
}
if img.screen {
if useStencil {
return fmt.Errorf("directx: stencils are not available on the screen framebuffer")
}
rtvBase, err := g.rtvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
if err != nil {
return err
}
rtv := rtvBase
rtv.Offset(int32(g.frameIndex), g.rtvDescriptorSize)
rtvs = append(rtvs, rtv)
continue
}
if err := img.ensureRenderTargetView(g.device); err != nil {
return err
}
rtvBase, err := img.rtvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
if err != nil {
return err
}
rtv := rtvBase
rtvs = append(rtvs, rtv)
if !useStencil {
continue
}
if err := img.ensureDepthStencilView(g.device); err != nil {
return err
}
if dsv != nil {
continue
}
sv, err := img.dsvDescriptorHeap.GetCPUDescriptorHandleForHeapStart()
if err != nil {
return err
}
dsv = &sv
}
if !useStencil {
g.drawCommandList.OMSetRenderTargets(rtvs, false, nil)
return nil
}
g.drawCommandList.OMSetStencilRef(0)
g.drawCommandList.OMSetRenderTargets(rtvs, false, dsv)
g.drawCommandList.ClearDepthStencilView(*dsv, _D3D12_CLEAR_FLAG_STENCIL, 0, 0, nil)
return nil
}
func (g *graphics12) DrawTriangles(dstIDs [graphics.ShaderDstImageCount]graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
if shaderID == graphicsdriver.InvalidShaderID {
return fmt.Errorf("directx: shader ID is invalid")
}
@ -1102,20 +1206,46 @@ func (g *graphics12) DrawTriangles(dstID graphicsdriver.ImageID, srcs [graphics.
g.pipelineStates.releaseConstantBuffers(g.frameIndex)
}
dst := g.images[dstID]
var resourceBarriers []_D3D12_RESOURCE_BARRIER_Transition
if rb, ok := dst.transiteState(_D3D12_RESOURCE_STATE_RENDER_TARGET); ok {
resourceBarriers = append(resourceBarriers, rb)
}
var srcImages [graphics.ShaderSrcImageCount]*image12
for i, srcID := range srcs {
src := g.images[srcID]
if src == nil {
var dsts [graphics.ShaderDstImageCount]*image12
var vp _D3D12_VIEWPORT
var targetCount int
firstTarget := -1
for i, id := range dstIDs {
img := g.images[id]
if img == nil {
continue
}
srcImages[i] = src
if rb, ok := src.transiteState(_D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE); ok {
if firstTarget == -1 {
firstTarget = i
}
dsts[i] = img
w, h := img.internalSize()
vp = _D3D12_VIEWPORT{
TopLeftX: 0,
TopLeftY: 0,
Width: float32(w),
Height: float32(h),
MinDepth: _D3D12_MIN_DEPTH,
MaxDepth: _D3D12_MAX_DEPTH,
}
if rb, ok := img.transiteState(_D3D12_RESOURCE_STATE_RENDER_TARGET); ok {
resourceBarriers = append(resourceBarriers, rb)
}
targetCount++
}
var srcs [graphics.ShaderSrcImageCount]*image12
for i, srcID := range srcIDs {
img := g.images[srcID]
if img == nil {
continue
}
srcs[i] = img
if rb, ok := img.transiteState(_D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE); ok {
resourceBarriers = append(resourceBarriers, rb)
}
}
@ -1124,25 +1254,26 @@ func (g *graphics12) DrawTriangles(dstID graphicsdriver.ImageID, srcs [graphics.
g.drawCommandList.ResourceBarrier(resourceBarriers)
}
if err := dst.setAsRenderTarget(g.drawCommandList, g.device, fillRule != graphicsdriver.FillRuleFillAll); err != nil {
// If the number of targets is more than one, or if the only target is not the first one, then
// it is safe to assume that MRT is used.
// Also, it only matters in order to specify empty targets/viewports when not all slots are
// being filled, even though it's not a MRT scenario.
usesMRT := targetCount > 1 || firstTarget > 0
if usesMRT {
targetCount = graphics.ShaderDstImageCount
}
if err := g.setAsRenderTargets(dsts[:targetCount], fillRule != graphicsdriver.FillRuleFillAll); err != nil {
return err
}
shader := g.shaders[shaderID]
adjustedUniforms := adjustUniforms(shader.uniformTypes, shader.uniformOffsets, uniforms)
w, h := dst.internalSize()
g.needFlushDrawCommandList = true
g.drawCommandList.RSSetViewports([]_D3D12_VIEWPORT{
{
TopLeftX: 0,
TopLeftY: 0,
Width: float32(w),
Height: float32(h),
MinDepth: _D3D12_MIN_DEPTH,
MaxDepth: _D3D12_MAX_DEPTH,
},
})
g.drawCommandList.RSSetViewports([]_D3D12_VIEWPORT{vp})
g.drawCommandList.IASetPrimitiveTopology(_D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST)
g.drawCommandList.IASetVertexBuffers(0, []_D3D12_VERTEX_BUFFER_VIEW{
{
@ -1157,7 +1288,7 @@ func (g *graphics12) DrawTriangles(dstID graphicsdriver.ImageID, srcs [graphics.
Format: _DXGI_FORMAT_R32_UINT,
})
if err := g.pipelineStates.drawTriangles(g.device, g.drawCommandList, g.frameIndex, dst.screen, srcImages, shader, dstRegions, adjustedUniforms, blend, indexOffset, fillRule); err != nil {
if err := g.pipelineStates.drawTriangles(g.device, g.drawCommandList, g.frameIndex, !usesMRT && dsts[firstTarget].screen, srcs, shader, dstRegions, adjustedUniforms, blend, indexOffset, fillRule); err != nil {
return err
}

2
internal/graphicsdriver/directx/image12_windows.go
View File

@ -70,7 +70,7 @@ func (i *image12) disposeImpl() {
func (i *image12) ReadPixels(args []graphicsdriver.PixelsArgs) error {
if i.screen {
return errors.New("directx: Pixels cannot be called on the screen")
return errors.New("directx: ReadPixels cannot be called on the screen")
}
if err := i.graphics.flushCommandList(i.graphics.drawCommandList); err != nil {

31
internal/graphicsdriver/directx/pipeline12_windows.go
View File

@ -484,6 +484,18 @@ func (p *pipelineStates) newPipelineState(device *_ID3D12Device, vsh, psh *_ID3D
}
// Create a pipeline state.
rtBlendDesc := _D3D12_RENDER_TARGET_BLEND_DESC{
BlendEnable: 1,
LogicOpEnable: 0,
SrcBlend: blendFactorToBlend12(blend.BlendFactorSourceRGB, false),
DestBlend: blendFactorToBlend12(blend.BlendFactorDestinationRGB, false),
BlendOp: blendOperationToBlendOp12(blend.BlendOperationRGB),
SrcBlendAlpha: blendFactorToBlend12(blend.BlendFactorSourceAlpha, true),
DestBlendAlpha: blendFactorToBlend12(blend.BlendFactorDestinationAlpha, true),
BlendOpAlpha: blendOperationToBlendOp12(blend.BlendOperationAlpha),
LogicOp: _D3D12_LOGIC_OP_NOOP,
RenderTargetWriteMask: writeMask,
}
psoDesc := _D3D12_GRAPHICS_PIPELINE_STATE_DESC{
pRootSignature: rootSignature,
VS: _D3D12_SHADER_BYTECODE{
@ -498,18 +510,8 @@ func (p *pipelineStates) newPipelineState(device *_ID3D12Device, vsh, psh *_ID3D
AlphaToCoverageEnable: 0,
IndependentBlendEnable: 0,
RenderTarget: [8]_D3D12_RENDER_TARGET_BLEND_DESC{
{
BlendEnable: 1,
LogicOpEnable: 0,
SrcBlend: blendFactorToBlend12(blend.BlendFactorSourceRGB, false),
DestBlend: blendFactorToBlend12(blend.BlendFactorDestinationRGB, false),
BlendOp: blendOperationToBlendOp12(blend.BlendOperationRGB),
SrcBlendAlpha: blendFactorToBlend12(blend.BlendFactorSourceAlpha, true),
DestBlendAlpha: blendFactorToBlend12(blend.BlendFactorDestinationAlpha, true),
BlendOpAlpha: blendOperationToBlendOp12(blend.BlendOperationAlpha),
LogicOp: _D3D12_LOGIC_OP_NOOP,
RenderTargetWriteMask: writeMask,
},
rtBlendDesc, rtBlendDesc, rtBlendDesc, rtBlendDesc,
rtBlendDesc, rtBlendDesc, rtBlendDesc, rtBlendDesc, // TODO: need to fill them all?
},
},
SampleMask: math.MaxUint32,
@ -532,9 +534,10 @@ func (p *pipelineStates) newPipelineState(device *_ID3D12Device, vsh, psh *_ID3D
NumElements: uint32(len(inputElementDescsForDX12)),
},
PrimitiveTopologyType: _D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE,
NumRenderTargets: 1,
NumRenderTargets: graphics.ShaderDstImageCount,
RTVFormats: [8]_DXGI_FORMAT{
rtvFormat,
rtvFormat, rtvFormat, rtvFormat, rtvFormat,
rtvFormat, rtvFormat, rtvFormat, rtvFormat,
},
DSVFormat: dsvFormat,
SampleDesc: _DXGI_SAMPLE_DESC{

2
internal/graphicsdriver/graphics.go
View File

@ -68,7 +68,7 @@ type Graphics interface {
NewShader(program *shaderir.Program) (Shader, error)
// DrawTriangles draws an image onto another image with the given parameters.
DrawTriangles(dst ImageID, srcs [graphics.ShaderSrcImageCount]ImageID, shader ShaderID, dstRegions []DstRegion, indexOffset int, blend Blend, uniforms []uint32, fillRule FillRule) error
DrawTriangles(dsts [graphics.ShaderDstImageCount]ImageID, srcs [graphics.ShaderSrcImageCount]ImageID, shader ShaderID, dstRegions []DstRegion, indexOffset int, blend Blend, uniforms []uint32, fillRule FillRule) error
}
type Resetter interface {

4
internal/graphicsdriver/metal/graphics_darwin.go
View File

@ -605,12 +605,12 @@ func (g *Graphics) draw(dst *Image, dstRegions []graphicsdriver.DstRegion, srcs
return nil
}
func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
func (g *Graphics) DrawTriangles(dstIDs [graphics.ShaderDstImageCount]graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
if shaderID == graphicsdriver.InvalidShaderID {
return fmt.Errorf("metal: shader ID is invalid")
}
dst := g.images[dstID]
dst := g.images[dstIDs[0]]
if dst.screen {
g.view.update()

28
internal/graphicsdriver/opengl/context.go
View File

@ -102,6 +102,7 @@ type context struct {
locationCache *locationCache
screenFramebuffer framebufferNative // This might not be the default frame buffer '0' (e.g. iOS).
mrtFramebuffer framebufferNative // The dynamic framebuffer used for MRT operations
lastFramebuffer framebufferNative
lastTexture textureNative
lastRenderbuffer renderbufferNative
@ -110,8 +111,6 @@ type context struct {
lastBlend graphicsdriver.Blend
maxTextureSize int
maxTextureSizeOnce sync.Once
highp bool
highpOnce sync.Once
initOnce sync.Once
}
@ -139,26 +138,25 @@ func (c *context) bindFramebuffer(f framebufferNative) {
c.lastFramebuffer = f
}
func (c *context) setViewport(f *framebuffer) {
c.bindFramebuffer(f.native)
if c.lastViewportWidth == f.viewportWidth && c.lastViewportHeight == f.viewportHeight {
func (c *context) setViewport(width, height int, screen bool) {
if c.lastViewportWidth == width && c.lastViewportHeight == height {
return
}
// On some environments, viewport size must be within the framebuffer size.
// e.g. Edge (#71), Chrome on GPD Pocket (#420), macOS Mojave (#691).
// Use the same size of the framebuffer here.
c.ctx.Viewport(0, 0, int32(f.viewportWidth), int32(f.viewportHeight))
c.ctx.Viewport(0, 0, int32(width), int32(height))
// glViewport must be called at least at every frame on iOS.
// As the screen framebuffer is the last render target, next SetViewport should be
// the first call at a frame.
if f.native == c.screenFramebuffer {
if screen {
c.lastViewportWidth = 0
c.lastViewportHeight = 0
} else {
c.lastViewportWidth = f.viewportWidth
c.lastViewportHeight = f.viewportHeight
c.lastViewportWidth = width
c.lastViewportHeight = height
}
}
@ -264,16 +262,6 @@ func (c *context) framebufferPixels(buf []byte, f *framebuffer, region image.Rec
return nil
}
func (c *context) framebufferPixelsToBuffer(f *framebuffer, buffer buffer, width, height int) {
c.ctx.Flush()
c.bindFramebuffer(f.native)
c.ctx.BindBuffer(gl.PIXEL_PACK_BUFFER, uint32(buffer))
c.ctx.ReadPixels(nil, 0, 0, int32(width), int32(height), gl.RGBA, gl.UNSIGNED_BYTE)
c.ctx.BindBuffer(gl.PIXEL_PACK_BUFFER, 0)
}
func (c *context) deleteTexture(t textureNative) {
if c.lastTexture == t {
c.lastTexture = 0
@ -357,7 +345,7 @@ func (c *context) bindStencilBuffer(f framebufferNative, r renderbufferNative) e
c.ctx.FramebufferRenderbuffer(gl.FRAMEBUFFER, gl.STENCIL_ATTACHMENT, gl.RENDERBUFFER, uint32(r))
if s := c.ctx.CheckFramebufferStatus(gl.FRAMEBUFFER); s != gl.FRAMEBUFFER_COMPLETE {
return errors.New(fmt.Sprintf("opengl: glFramebufferRenderbuffer failed: %d", s))
return fmt.Errorf("opengl: glFramebufferRenderbuffer failed: %d", s)
}
return nil
}

2
internal/graphicsdriver/opengl/gl/const.go
View File

@ -23,6 +23,7 @@ const (
BLEND = 0x0BE2
CLAMP_TO_EDGE = 0x812F
COLOR_ATTACHMENT0 = 0x8CE0
COLOR_BUFFER_BIT = 0x4000
COMPILE_STATUS = 0x8B81
DECR_WRAP = 0x8508
DEPTH24_STENCIL8 = 0x88F0
@ -52,6 +53,7 @@ const (
MIN = 0x8007
NEAREST = 0x2600
NO_ERROR = 0
NONE = 0
NOTEQUAL = 0x0205
ONE = 1
ONE_MINUS_DST_ALPHA = 0x0305

8
internal/graphicsdriver/opengl/gl/debug.go
View File

@ -293,6 +293,14 @@ func (d *DebugContext) DisableVertexAttribArray(arg0 uint32) {
}
}
func (d *DebugContext) DrawBuffers(arg0 []uint32) {
d.Context.DrawBuffers(arg0)
fmt.Fprintln(os.Stderr, "DrawBuffers")
if e := d.Context.GetError(); e != NO_ERROR {
panic(fmt.Sprintf("gl: GetError() returned %d at DrawBuffers", e))
}
}
func (d *DebugContext) DrawElements(arg0 uint32, arg1 int32, arg2 uint32, arg3 int) {
d.Context.DrawElements(arg0, arg1, arg2, arg3)
fmt.Fprintln(os.Stderr, "DrawElements")

10
internal/graphicsdriver/opengl/gl/default_cgo.go
View File

@ -128,6 +128,10 @@ package gl
// typedef void (*fn)(GLuint index);
// ((fn)(fnptr))(index);
// }
// static void glowDrawBuffers(uintptr_t fnptr, GLsizei n, const GLenum* bufs) {
// typedef void (*fn)(GLsizei n, const GLenum* bufs);
// ((fn)(fnptr))(n, bufs);
// }
// static void glowDrawElements(uintptr_t fnptr, GLenum mode, GLsizei count, GLenum type, const uintptr_t indices) {
// typedef void (*fn)(GLenum mode, GLsizei count, GLenum type, const uintptr_t indices);
// ((fn)(fnptr))(mode, count, type, indices);
@ -351,6 +355,7 @@ type defaultContext struct {
gpDeleteVertexArrays C.uintptr_t
gpDisable C.uintptr_t
gpDisableVertexAttribArray C.uintptr_t
gpDrawBuffers C.uintptr_t
gpDrawElements C.uintptr_t
gpEnable C.uintptr_t
gpEnableVertexAttribArray C.uintptr_t
@ -565,6 +570,10 @@ func (c *defaultContext) DisableVertexAttribArray(index uint32) {
C.glowDisableVertexAttribArray(c.gpDisableVertexAttribArray, C.GLuint(index))
}
func (c *defaultContext) DrawBuffers(bufs []uint32) {
C.glowDrawBuffers(c.gpDrawBuffers, C.GLsizei(len(bufs)), (*C.GLenum)(unsafe.Pointer(&bufs[0])))
}
func (c *defaultContext) DrawElements(mode uint32, count int32, xtype uint32, offset int) {
C.glowDrawElements(c.gpDrawElements, C.GLenum(mode), C.GLsizei(count), C.GLenum(xtype), C.uintptr_t(offset))
}
@ -801,6 +810,7 @@ func (c *defaultContext) LoadFunctions() error {
c.gpDeleteVertexArrays = C.uintptr_t(g.get("glDeleteVertexArrays"))
c.gpDisable = C.uintptr_t(g.get("glDisable"))
c.gpDisableVertexAttribArray = C.uintptr_t(g.get("glDisableVertexAttribArray"))
c.gpDrawBuffers = C.uintptr_t(g.get("glDrawBuffers"))
c.gpDrawElements = C.uintptr_t(g.get("glDrawElements"))
c.gpEnable = C.uintptr_t(g.get("glEnable"))
c.gpEnableVertexAttribArray = C.uintptr_t(g.get("glEnableVertexAttribArray"))

7
internal/graphicsdriver/opengl/gl/default_js.go
View File

@ -54,6 +54,7 @@ type defaultContext struct {
fnDeleteVertexArray js.Value
fnDisable js.Value
fnDisableVertexAttribArray js.Value
fnDrawBuffers js.Value
fnDrawElements js.Value
fnEnable js.Value
fnEnableVertexAttribArray js.Value
@ -184,6 +185,7 @@ func NewDefaultContext(v js.Value) (Context, error) {
fnDeleteVertexArray: v.Get("deleteVertexArray").Call("bind", v),
fnDisable: v.Get("disable").Call("bind", v),
fnDisableVertexAttribArray: v.Get("disableVertexAttribArray").Call("bind", v),
fnDrawBuffers: v.Get("drawBuffers").Call("bind", v),
fnDrawElements: v.Get("drawElements").Call("bind", v),
fnEnable: v.Get("enable").Call("bind", v),
fnEnableVertexAttribArray: v.Get("enableVertexAttribArray").Call("bind", v),
@ -384,6 +386,11 @@ func (c *defaultContext) DisableVertexAttribArray(index uint32) {
c.fnDisableVertexAttribArray.Invoke(index)
}
func (c *defaultContext) DrawBuffers(bufs []uint32) {
arr := jsutil.NewUint32Array(bufs)
c.fnDrawBuffers.Invoke(arr)
}
func (c *defaultContext) DrawElements(mode uint32, count int32, xtype uint32, offset int) {
c.fnDrawElements.Invoke(mode, count, xtype, offset)
}

6
internal/graphicsdriver/opengl/gl/default_purego.go
View File

@ -51,6 +51,7 @@ type defaultContext struct {
gpDeleteVertexArrays uintptr
gpDisable uintptr
gpDisableVertexAttribArray uintptr
gpDrawBuffers uintptr
gpDrawElements uintptr
gpEnable uintptr
gpEnableVertexAttribArray uintptr
@ -269,6 +270,10 @@ func (c *defaultContext) DrawElements(mode uint32, count int32, xtype uint32, of
purego.SyscallN(c.gpDrawElements, uintptr(mode), uintptr(count), uintptr(xtype), uintptr(offset))
}
func (c *defaultContext) DrawBuffers(buffers []uint32) {
purego.SyscallN(c.gpDrawBuffers, uintptr(len(buffers)), uintptr(unsafe.Pointer(&buffers[0])))
}
func (c *defaultContext) Enable(cap uint32) {
purego.SyscallN(c.gpEnable, uintptr(cap))
}
@ -501,6 +506,7 @@ func (c *defaultContext) LoadFunctions() error {
c.gpDeleteVertexArrays = g.get("glDeleteVertexArrays")
c.gpDisable = g.get("glDisable")
c.gpDisableVertexAttribArray = g.get("glDisableVertexAttribArray")
c.gpDrawBuffers = g.get("glDrawBuffers")
c.gpDrawElements = g.get("glDrawElements")
c.gpEnable = g.get("glEnable")
c.gpEnableVertexAttribArray = g.get("glEnableVertexAttribArray")

1
internal/graphicsdriver/opengl/gl/interface.go
View File

@ -60,6 +60,7 @@ type Context interface {
Disable(cap uint32)
DisableVertexAttribArray(index uint32)
DrawElements(mode uint32, count int32, xtype uint32, offset int)
DrawBuffers(buffers []uint32)
Enable(cap uint32)
EnableVertexAttribArray(index uint32)
Flush()

92
internal/graphicsdriver/opengl/graphics.go
View File

@ -198,18 +198,88 @@ func (g *Graphics) uniformVariableName(idx int) string {
return name
}
func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
func (g *Graphics) DrawTriangles(dstIDs [graphics.ShaderDstImageCount]graphicsdriver.ImageID, srcIDs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shaderID graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
if shaderID == graphicsdriver.InvalidShaderID {
return fmt.Errorf("opengl: shader ID is invalid")
}
destination := g.images[dstID]
g.drawCalled = true
if err := destination.setViewport(); err != nil {
return err
targetCount := 0
firstTarget := -1
var dsts [graphics.ShaderDstImageCount]*Image
for i, dstID := range dstIDs {
if dstID == graphicsdriver.InvalidImageID {
continue
}
dst := g.images[dstIDs[i]]
if dst == nil {
continue
}
if firstTarget == -1 {
firstTarget = i
}
if err := dst.ensureFramebuffer(); err != nil {
return err
}
dsts[i] = dst
targetCount++
}
f := uint32(dsts[firstTarget].framebuffer.native)
// If the number of targets is more than one, or if the only target is not the first one, then
// it is safe to assume that MRT is used.
// Also, it only matters in order to specify empty targets/viewports when not all slots are
// being filled.
usesMRT := firstTarget > 0 || targetCount > 1
if usesMRT {
f = uint32(g.context.mrtFramebuffer)
// Create the initial MRT framebuffer
if f == 0 {
f = g.context.ctx.CreateFramebuffer()
if f <= 0 {
return fmt.Errorf("opengl: creating framebuffer failed: the returned value is not positive but %d", f)
}
g.context.mrtFramebuffer = framebufferNative(f)
}
g.context.bindFramebuffer(framebufferNative(f))
// Reset color attachments
if s := g.context.ctx.CheckFramebufferStatus(gl.FRAMEBUFFER); s == gl.FRAMEBUFFER_COMPLETE {
g.context.ctx.Clear(gl.COLOR_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
}
for i, dst := range dsts {
if dst == nil {
continue
}
g.context.ctx.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0+uint32(i), gl.TEXTURE_2D, uint32(dst.texture), 0)
}
if s := g.context.ctx.CheckFramebufferStatus(gl.FRAMEBUFFER); s != gl.FRAMEBUFFER_COMPLETE {
if s != 0 {
return fmt.Errorf("opengl: creating framebuffer failed: %v", s)
}
if e := g.context.ctx.GetError(); e != gl.NO_ERROR {
return fmt.Errorf("opengl: creating framebuffer failed: (glGetError) %d", e)
}
return fmt.Errorf("opengl: creating framebuffer failed: unknown error")
}
// Color attachments
var attached []uint32
for i, dst := range dsts {
if dst == nil {
attached = append(attached, gl.NONE)
continue
}
attached = append(attached, uint32(gl.COLOR_ATTACHMENT0+i))
}
g.context.ctx.DrawBuffers(attached)
} else {
g.context.bindFramebuffer(framebufferNative(f))
}
w, h := dsts[firstTarget].viewportSize() //.framebuffer.viewportWidth, dsts[firstTarget].framebuffer.viewportHeight
g.context.setViewport(w, h, dsts[firstTarget].screen)
g.context.blend(blend)
shader := g.shaders[shaderID]
@ -232,7 +302,7 @@ func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.
}
// In OpenGL, the NDC's Y direction is upward, so flip the Y direction for the final framebuffer.
if destination.screen {
if !usesMRT && dsts[firstTarget].screen {
const idx = graphics.ProjectionMatrixUniformVariableIndex
// Invert the sign bits as float32 values.
g.uniformVars[idx].value[1] ^= 1 << 31
@ -260,7 +330,7 @@ func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.
g.uniformVars = g.uniformVars[:0]
if fillRule != graphicsdriver.FillRuleFillAll {
if err := destination.ensureStencilBuffer(); err != nil {
if err := dsts[firstTarget].ensureStencilBuffer(framebufferNative(f)); err != nil {
return err
}
g.context.ctx.Enable(gl.STENCIL_TEST)
@ -273,6 +343,7 @@ func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.
int32(dstRegion.Region.Dx()),
int32(dstRegion.Region.Dy()),
)
switch fillRule {
case graphicsdriver.FillRuleNonZero:
g.context.ctx.Clear(gl.STENCIL_BUFFER_BIT)
@ -280,6 +351,7 @@ func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.
g.context.ctx.StencilOpSeparate(gl.FRONT, gl.KEEP, gl.KEEP, gl.INCR_WRAP)
g.context.ctx.StencilOpSeparate(gl.BACK, gl.KEEP, gl.KEEP, gl.DECR_WRAP)
g.context.ctx.ColorMask(false, false, false, false)
g.context.ctx.DrawElements(gl.TRIANGLES, int32(dstRegion.IndexCount), gl.UNSIGNED_INT, indexOffset*int(unsafe.Sizeof(uint32(0))))
case graphicsdriver.FillRuleEvenOdd:
g.context.ctx.Clear(gl.STENCIL_BUFFER_BIT)
@ -302,6 +374,10 @@ func (g *Graphics) DrawTriangles(dstID graphicsdriver.ImageID, srcIDs [graphics.
g.context.ctx.Disable(gl.STENCIL_TEST)
}
// Detach existing color attachments
//g.context.bindFramebuffer(fb)
//TODO:
return nil
}

16
internal/graphicsdriver/opengl/image.go
View File

@ -60,14 +60,6 @@ func (i *Image) Dispose() {
i.graphics.removeImage(i)
}
func (i *Image) setViewport() error {
if err := i.ensureFramebuffer(); err != nil {
return err
}
i.graphics.context.setViewport(i.framebuffer)
return nil
}
func (i *Image) ReadPixels(args []graphicsdriver.PixelsArgs) error {
if err := i.ensureFramebuffer(); err != nil {
return err
@ -109,14 +101,14 @@ func (i *Image) ensureFramebuffer() error {
return nil
}
func (i *Image) ensureStencilBuffer() error {
func (i *Image) ensureStencilBuffer(f framebufferNative) error {
if i.stencil != 0 {
return nil
}
if err := i.ensureFramebuffer(); err != nil {
/*if err := i.ensureFramebuffer(); err != nil {
return err
}
}*/
r, err := i.graphics.context.newRenderbuffer(i.viewportSize())
if err != nil {
@ -124,7 +116,7 @@ func (i *Image) ensureStencilBuffer() error {
}
i.stencil = r
if err := i.graphics.context.bindStencilBuffer(i.framebuffer.native, i.stencil); err != nil {
if err := i.graphics.context.bindStencilBuffer(f, i.stencil); err != nil {
return err
}
return nil

2
internal/graphicsdriver/playstation5/graphics_playstation5.go
View File

@ -116,7 +116,7 @@ func (g *Graphics) NewShader(program *shaderir.Program) (graphicsdriver.Shader,
}, nil
}
func (g *Graphics) DrawTriangles(dst graphicsdriver.ImageID, srcs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shader graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
func (g *Graphics) DrawTriangles(dsts [graphics.ShaderDstImageCount]graphicsdriver.ImageID, srcs [graphics.ShaderSrcImageCount]graphicsdriver.ImageID, shader graphicsdriver.ShaderID, dstRegions []graphicsdriver.DstRegion, indexOffset int, blend graphicsdriver.Blend, uniforms []uint32, fillRule graphicsdriver.FillRule) error {
return nil
}

15
internal/jsutil/buf_js.go
View File

@ -24,6 +24,7 @@ var (
uint8Array = js.Global().Get("Uint8Array")
float32Array = js.Global().Get("Float32Array")
int32Array = js.Global().Get("Int32Array")
uint32Array = js.Global().Get("Uint32Array")
)
var (
@ -40,8 +41,11 @@ var (
// temporaryFloat32Array is a Float32ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
temporaryFloat32Array = float32Array.New(temporaryArrayBuffer)
// temporaryInt32Array is a Float32ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
// temporaryInt32Array is a Int32ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
temporaryInt32Array = int32Array.New(temporaryArrayBuffer)
// temporaryUint32Array is a Uint32ArrayBuffer whose underlying buffer is always temporaryArrayBuffer.
temporaryUint32Array = uint32Array.New(temporaryArrayBuffer)
)
func ensureTemporaryArrayBufferSize(byteLength int) {
@ -54,6 +58,7 @@ func ensureTemporaryArrayBufferSize(byteLength int) {
temporaryUint8Array = uint8Array.New(temporaryArrayBuffer)
temporaryFloat32Array = float32Array.New(temporaryArrayBuffer)
temporaryInt32Array = int32Array.New(temporaryArrayBuffer)
temporaryUint32Array = uint32Array.New(temporaryArrayBuffer)
}
}
@ -101,3 +106,11 @@ func TemporaryInt32Array(minLength int, data []int32) js.Value {
copySliceToTemporaryArrayBuffer(data)
return temporaryInt32Array
}
// NewUint32Array returns a Uint32Array whose length is equal to the length of data.
func NewUint32Array(data []uint32) js.Value {
ensureTemporaryArrayBufferSize(len(data) * 4)
copySliceToTemporaryArrayBuffer(data)
a := temporaryUint32Array.Call("slice", 0, len(data))
return a
}

75
internal/mipmap/mipmap.go
View File

@ -127,6 +127,81 @@ func (m *Mipmap) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Mipmap, verti
m.deallocateMipmaps()
}
func DrawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Mipmap, srcs [graphics.ShaderSrcImageCount]*Mipmap, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *atlas.Shader, uniforms []uint32, fillRule graphicsdriver.FillRule, canSkipMipmap bool) {
if len(indices) == 0 {
return
}
level := 0
// TODO: Do we need to check all the sources' states of being volatile?
if !canSkipMipmap && srcs[0] != nil && canUseMipmap(srcs[0].imageType) {
level = math.MaxInt32
for i := 0; i < len(indices)/3; i++ {
const n = graphics.VertexFloatCount
dx0 := vertices[n*indices[3*i]+0]
dy0 := vertices[n*indices[3*i]+1]
sx0 := vertices[n*indices[3*i]+2]
sy0 := vertices[n*indices[3*i]+3]
dx1 := vertices[n*indices[3*i+1]+0]
dy1 := vertices[n*indices[3*i+1]+1]
sx1 := vertices[n*indices[3*i+1]+2]
sy1 := vertices[n*indices[3*i+1]+3]
dx2 := vertices[n*indices[3*i+2]+0]
dy2 := vertices[n*indices[3*i+2]+1]
sx2 := vertices[n*indices[3*i+2]+2]
sy2 := vertices[n*indices[3*i+2]+3]
if l := mipmapLevelFromDistance(dx0, dy0, dx1, dy1, sx0, sy0, sx1, sy1); level > l {
level = l
}
if l := mipmapLevelFromDistance(dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2); level > l {
level = l
}
if l := mipmapLevelFromDistance(dx2, dy2, dx0, dy0, sx2, sy2, sx0, sy0); level > l {
level = l
}
}
if level == math.MaxInt32 {
panic("mipmap: level must be calculated at least once but not")
}
}
var dstImgs [graphics.ShaderDstImageCount]*buffered.Image
for i, dst := range dsts {
if dst == nil {
continue
}
dstImgs[i] = dst.orig
}
var srcImgs [graphics.ShaderSrcImageCount]*buffered.Image
for i, src := range srcs {
if src == nil {
continue
}
if level != 0 {
if img := src.level(level); img != nil {
const n = graphics.VertexFloatCount
s := float32(pow2(level))
for i := 0; i < len(vertices)/n; i++ {
vertices[i*n+2] /= s
vertices[i*n+3] /= s
}
srcImgs[i] = img
continue
}
}
srcImgs[i] = src.orig
}
buffered.DrawTrianglesMRT(dstImgs, srcImgs, vertices, indices, blend, dstRegion, srcRegions, shader, uniforms, fillRule)
for _, dst := range dsts {
if dst == nil {
continue
}
dst.deallocateMipmaps()
}
}
func (m *Mipmap) setImg(level int, img *buffered.Image) {
if m.imgs == nil {
m.imgs = map[int]*buffered.Image{}

15
internal/shader/shader.go
View File

@ -216,6 +216,7 @@ func Compile(src []byte, vertexEntry, fragmentEntry string, textureCount int) (*
// TODO: Make a call graph and reorder the elements.
s.ir.TextureCount = textureCount
return &s.ir, nil
}
@ -742,8 +743,9 @@ func (cs *compileState) parseFuncParams(block *block, fname string, d *ast.FuncD
}
// If there is only one returning value, it is treated as a returning value.
// Only if not the fragment entrypoint.
// An array cannot be a returning value, especially for HLSL (#2923).
if len(out) == 1 && out[0].name == "" && out[0].typ.Main != shaderir.Array {
if fname != cs.fragmentEntry && len(out) == 1 && out[0].name == "" && out[0].typ.Main != shaderir.Array {
ret = out[0].typ
out = nil
}
@ -821,10 +823,15 @@ func (cs *compileState) parseFunc(block *block, d *ast.FuncDecl) (function, bool
return function{}, false
}
if len(outParams) != 0 || returnType.Main != shaderir.Vec4 {
cs.addError(d.Pos(), "fragment entry point must have one returning vec4 value for a color")
return function{}, false
// The first out-param is treated as fragColor0 in GLSL.
for i := range outParams {
if outParams[i].typ.Main != shaderir.Vec4 {
cs.addError(d.Pos(), "fragment entry point must only have vec4 return values for colors")
return function{}, false
}
}
// Adjust the number of textures to write to
cs.ir.ColorsOutCount = len(outParams)
if cs.varyingParsed {
checkVaryings(inParams[1:])

4
internal/shader/shader_test.go
View File

@ -194,7 +194,7 @@ func TestCompile(t *testing.T) {
}
}
if tc.Metal != nil {
/*if tc.Metal != nil {
m := msl.Compile(s)
if got, want := metalNormalize(m), metalNormalize(string(tc.Metal)); got != want {
compare(t, "Metal", got, want)
@ -203,7 +203,7 @@ func TestCompile(t *testing.T) {
// Just check that Compile doesn't cause panic.
// TODO: Should the results be tested?
msl.Compile(s)
msl.Compile(s)*/
})
}
}

3
internal/shader/stmt.go
View File

@ -334,7 +334,8 @@ func (cs *compileState) parseStmt(block *block, fname string, stmt ast.Stmt, inP
case *ast.ReturnStmt:
if len(stmt.Results) != len(outParams) && len(stmt.Results) != 1 {
if !(len(stmt.Results) == 0 && len(outParams) > 0 && outParams[0].name != "") {
// Fragment function does not have to return a value due to discard
if fname != cs.fragmentEntry && !(len(stmt.Results) == 0 && len(outParams) > 0 && outParams[0].name != "") {
// TODO: Check variable shadowings.
// https://go.dev/ref/spec#Return_statements
cs.addError(stmt.Pos(), fmt.Sprintf("the number of returning variables must be %d but %d", len(outParams), len(stmt.Results)))

35
internal/shader/testdata/for5.expected.fs vendored
View File

@ -3,31 +3,32 @@ uniform float U1;
uniform float U2;
int F0(in int l0);
vec4 F1(in vec4 l0);
void F1(in vec4 l0, out vec4 l1);
int F0(in int l0) {
return l0;
}
vec4 F1(in vec4 l0) {
int l1 = 0;
int l3 = 0;
l1 = 0;
for (int l2 = 0; l2 < 10; l2++) {
int l3 = 0;
l3 = F0(l2);
l1 = (l1) + (l3);
for (int l4 = 0; l4 < 10; l4++) {
int l5 = 0;
l5 = F0(l4);
l1 = (l1) + (l5);
void F1(in vec4 l0, out vec4 l1) {
int l2 = 0;
int l4 = 0;
l2 = 0;
for (int l3 = 0; l3 < 10; l3++) {
int l4 = 0;
l4 = F0(l3);
l2 = (l2) + (l4);
for (int l5 = 0; l5 < 10; l5++) {
int l6 = 0;
l6 = F0(l5);
l2 = (l2) + (l6);
}
}
l3 = 0;
l1 = (l1) + (l3);
return vec4(float(l1));
l4 = 0;
l2 = (l2) + (l4);
l1 = vec4(float(l2));
return;
}
void main(void) {
fragColor = F1(gl_FragCoord);
F1(gl_FragCoord, gl_FragData[0]);
}

12
internal/shader/testdata/issue1238.expected.fs vendored
View File

@ -1,12 +1,14 @@
vec4 F0(in vec4 l0);
void F0(in vec4 l0, out vec4 l1);
vec4 F0(in vec4 l0) {
void F0(in vec4 l0, out vec4 l1) {
if (true) {
return l0;
l1 = l0;
return;
}
return l0;
l1 = l0;
return;
}
void main(void) {
fragColor = F0(gl_FragCoord);
F0(gl_FragCoord, gl_FragData[0]);
}

15
internal/shader/testdata/issue1245.expected.fs vendored
View File

@ -1,13 +1,14 @@
vec4 F0(in vec4 l0);
void F0(in vec4 l0, out vec4 l1);
vec4 F0(in vec4 l0) {
vec4 l1 = vec4(0);
for (float l2 = 0.0; l2 < 4.0; l2++) {
(l1).x = ((l1).x) + ((l2) * (1.0000000000e-02));
void F0(in vec4 l0, out vec4 l1) {
vec4 l2 = vec4(0);
for (float l3 = 0.0; l3 < 4.0; l3++) {
(l2).x = ((l2).x) + ((l3) * (1.0000000000e-02));
}
return l1;
l1 = l2;
return;
}
void main(void) {
fragColor = F0(gl_FragCoord);
F0(gl_FragCoord, gl_FragData[0]);
}

9
internal/shader/testdata/issue1701.expected.fs vendored
View File

@ -1,6 +1,6 @@
void F2(void);
void F3(void);
vec4 F5(in vec4 l0);
void F5(in vec4 l0, out vec4 l1);
void F2(void) {
}
@ -9,11 +9,12 @@ void F3(void) {
F2();
}
vec4 F5(in vec4 l0) {
void F5(in vec4 l0, out vec4 l1) {
F3();
return vec4(0.0);
l1 = vec4(0.0);
return;
}
void main(void) {
fragColor = F5(gl_FragCoord);
F5(gl_FragCoord, gl_FragData[0]);
}

9
internal/shader/testdata/vertex_fragment.expected.fs vendored
View File

@ -2,12 +2,13 @@ uniform vec2 U0;
in vec2 V0;
in vec4 V1;
vec4 F0(in vec4 l0, in vec2 l1, in vec4 l2);
void F0(in vec4 l0, in vec2 l1, in vec4 l2, out vec4 l3);
vec4 F0(in vec4 l0, in vec2 l1, in vec4 l2) {
return vec4((l0).x, (l1).y, (l2).z, 1.0);
void F0(in vec4 l0, in vec2 l1, in vec4 l2, out vec4 l3) {
l3 = vec4((l0).x, (l1).y, (l2).z, 1.0);
return;
}
void main(void) {
fragColor = F0(gl_FragCoord, V0, V1);
F0(gl_FragCoord, V0, V1, gl_FragData[0]);
}

36
internal/shaderir/glsl/glsl.go
View File

@ -86,9 +86,7 @@ precision highp int;
#define lowp
#define mediump
#define highp
#endif
out vec4 fragColor;`
#endif`
if version == GLSLVersionDefault {
prelude += "\n\n" + utilFunctions
}
@ -231,6 +229,12 @@ func Compile(p *shaderir.Program, version GLSLVersion) (vertexShader, fragmentSh
fslines = append(fslines, fmt.Sprintf("in %s;", c.varDecl(p, &t, fmt.Sprintf("V%d", i))))
}
}
// If ES300 out colors need to be defined explicitely
if version == GLSLVersionES300 {
for i := 0; i < p.ColorsOutCount; i++ {
fslines = append(fslines, fmt.Sprintf("layout(location = %d) out vec4 glFragColor%d;", i, i))
}
}
var funcs []*shaderir.Func
if p.VertexFunc.Block != nil {
@ -420,7 +424,10 @@ func (c *compileContext) localVariableName(p *shaderir.Program, topBlock *shader
case idx < nv+1:
return fmt.Sprintf("V%d", idx-1)
default:
return fmt.Sprintf("l%d", idx-(nv+1))
if c.version == GLSLVersionES300 {
return fmt.Sprintf("glFragColor%d", idx-(nv+1))
}
return fmt.Sprintf("gl_FragData[%d]", idx-(nv+1))
}
default:
return fmt.Sprintf("l%d", idx)
@ -595,7 +602,7 @@ func (c *compileContext) block(p *shaderir.Program, topBlock, block *shaderir.Bl
case shaderir.Return:
switch {
case topBlock == p.FragmentFunc.Block:
lines = append(lines, fmt.Sprintf("%sfragColor = %s;", idt, expr(&s.Exprs[0])))
lines = append(lines, fmt.Sprintf("%s%s;", idt, expr(&s.Exprs[0])))
// The 'return' statement is not required so far, as the fragment entrypoint has only one sentence so far. See adjustProgram implementation.
case len(s.Exprs) == 0:
lines = append(lines, idt+"return;")
@ -604,7 +611,7 @@ func (c *compileContext) block(p *shaderir.Program, topBlock, block *shaderir.Bl
}
case shaderir.Discard:
// 'discard' is invoked only in the fragment shader entry point.
lines = append(lines, idt+"discard;", idt+"return vec4(0.0);")
lines = append(lines, idt+"discard;") //, idt+"return vec4(0.0);")
default:
lines = append(lines, fmt.Sprintf("%s?(unexpected stmt: %d)", idt, s.Type))
}
@ -645,15 +652,20 @@ func adjustProgram(p *shaderir.Program) *shaderir.Program {
Main: shaderir.Vec4, // gl_FragCoord
}
copy(inParams[1:], newP.Varyings)
// Out parameters of a fragment func are colors
outParams := make([]shaderir.Type, p.ColorsOutCount)
for i := range outParams {
outParams[i] = shaderir.Type{
Main: shaderir.Vec4,
}
}
newP.FragmentFunc.Block.LocalVarIndexOffset += (p.ColorsOutCount - 1)
newP.Funcs = append(newP.Funcs, shaderir.Func{
Index: funcIdx,
InParams: inParams,
OutParams: nil,
Return: shaderir.Type{
Main: shaderir.Vec4,
},
Block: newP.FragmentFunc.Block,
OutParams: outParams,
Block: newP.FragmentFunc.Block,
})
// Create an AST to call the new function.
@ -663,7 +675,7 @@ func adjustProgram(p *shaderir.Program) *shaderir.Program {
Index: funcIdx,
},
}
for i := 0; i < 1+len(newP.Varyings); i++ {
for i := 0; i < 1+len(newP.Varyings)+p.ColorsOutCount; i++ {
call = append(call, shaderir.Expr{
Type: shaderir.LocalVariable,
Index: i,

102
internal/shaderir/hlsl/hlsl.go
View File

@ -88,6 +88,7 @@ float4x4 float4x4FromScalar(float x) {
func Compile(p *shaderir.Program) (vertexShader, pixelShader string) {
offsets := CalcUniformMemoryOffsets(p)
p = adjustProgram(p)
c := &compileContext{
unit: p.Unit,
@ -190,7 +191,15 @@ func Compile(p *shaderir.Program) (vertexShader, pixelShader string) {
}
if p.FragmentFunc.Block != nil && len(p.FragmentFunc.Block.Stmts) > 0 {
pslines = append(pslines, "")
pslines = append(pslines, fmt.Sprintf("float4 PSMain(Varyings %s) : SV_TARGET {", vsOut))
pslines = append(pslines, "struct PS_OUTPUT")
pslines = append(pslines, "{")
for i := 0; i < p.ColorsOutCount; i++ {
pslines = append(pslines, fmt.Sprintf("\tfloat4 Color%d: SV_Target%d;", i, i))
}
pslines = append(pslines, "};")
pslines = append(pslines, "")
pslines = append(pslines, fmt.Sprintf("PS_OUTPUT PSMain(Varyings %s) {", vsOut))
pslines = append(pslines, "\tPS_OUTPUT output;")
pslines = append(pslines, c.block(p, p.FragmentFunc.Block, p.FragmentFunc.Block, 0)...)
pslines = append(pslines, "}")
}
@ -353,7 +362,7 @@ func (c *compileContext) localVariableName(p *shaderir.Program, topBlock *shader
case idx < nv+1:
return fmt.Sprintf("%s.M%d", vsOut, idx-1)
default:
return fmt.Sprintf("l%d", idx-(nv+1))
return fmt.Sprintf("output.Color%d", idx-(nv+1))
}
default:
return fmt.Sprintf("l%d", idx)
@ -563,6 +572,10 @@ func (c *compileContext) block(p *shaderir.Program, topBlock, block *shaderir.Bl
switch {
case topBlock == p.VertexFunc.Block:
lines = append(lines, fmt.Sprintf("%sreturn %s;", idt, vsOut))
case topBlock == p.FragmentFunc.Block:
// Call to the pseudo fragment func based on out parameters
lines = append(lines, idt+expr(&s.Exprs[0])+";")
lines = append(lines, idt+"return output;")
case len(s.Exprs) == 0:
lines = append(lines, idt+"return;")
default:
@ -570,7 +583,7 @@ func (c *compileContext) block(p *shaderir.Program, topBlock, block *shaderir.Bl
}
case shaderir.Discard:
// 'discard' is invoked only in the fragment shader entry point.
lines = append(lines, idt+"discard;", idt+"return float4(0.0, 0.0, 0.0, 0.0);")
lines = append(lines, idt+"discard;")
default:
lines = append(lines, fmt.Sprintf("%s?(unexpected stmt: %d)", idt, s.Type))
}
@ -578,3 +591,86 @@ func (c *compileContext) block(p *shaderir.Program, topBlock, block *shaderir.Bl
return lines
}
func adjustProgram(p *shaderir.Program) *shaderir.Program {
if p.FragmentFunc.Block == nil {
return p
}
// Shallow-clone the program in order not to modify p itself.
newP := *p
// Create a new slice not to affect the original p.
newP.Funcs = make([]shaderir.Func, len(p.Funcs))
copy(newP.Funcs, p.Funcs)
// Create a new function whose body is the same is the fragment shader's entry point.
// Determine a unique index of the new function.
var funcIdx int
for _, f := range newP.Funcs {
if funcIdx <= f.Index {
funcIdx = f.Index + 1
}
}
// For parameters of a fragment func, see the comment in internal/shaderir/program.go.
inParams := make([]shaderir.Type, 1+len(newP.Varyings))
inParams[0] = shaderir.Type{
Main: shaderir.Vec4, // gl_FragCoord
}
copy(inParams[1:], newP.Varyings)
// Out parameters of a fragment func are colors
outParams := make([]shaderir.Type, p.ColorsOutCount)
for i := range outParams {
outParams[i] = shaderir.Type{
Main: shaderir.Vec4,
}
}
newP.FragmentFunc.Block.LocalVarIndexOffset += (p.ColorsOutCount - 1)
newP.Funcs = append(newP.Funcs, shaderir.Func{
Index: funcIdx,
InParams: inParams,
OutParams: outParams,
Block: newP.FragmentFunc.Block,
})
// Create an AST to call the new function.
call := []shaderir.Expr{
{
Type: shaderir.FunctionExpr,
Index: funcIdx,
},
}
for i := 0; i < 1+len(newP.Varyings)+p.ColorsOutCount; i++ {
call = append(call, shaderir.Expr{
Type: shaderir.LocalVariable,
Index: i,
})
}
// Replace the entry point with just calling the new function.
stmts := []shaderir.Stmt{
{
// Return: This will be replaced with a call to the new function.
// Then the output structure containing colors will be returned.
Type: shaderir.Return,
Exprs: []shaderir.Expr{
// The function call
{
Type: shaderir.Call,
Exprs: call,
},
},
},
}
newP.FragmentFunc = shaderir.FragmentFunc{
Block: &shaderir.Block{
LocalVars: nil,
LocalVarIndexOffset: 1 + len(newP.Varyings) + 1,
Stmts: stmts,
},
}
return &newP
}

77
internal/shaderir/ir_test.go
View File

@ -938,12 +938,12 @@ void F0(float l0, float l1, thread float& l2) {
},
Attributes: []shaderir.Type{
{Main: shaderir.Vec4},
{Main: shaderir.Float},
{Main: shaderir.Vec2},
{Main: shaderir.Vec4},
},
Varyings: []shaderir.Type{
{Main: shaderir.Float},
{Main: shaderir.Vec2},
{Main: shaderir.Vec4},
},
VertexFunc: shaderir.VertexFunc{
Block: block(
@ -967,10 +967,10 @@ void F0(float l0, float l1, thread float& l2) {
GlslVS: glslVertexPrelude + `
uniform float U0;
in vec4 A0;
in float A1;
in vec2 A2;
out float V0;
out vec2 V1;
in vec2 A1;
in vec4 A2;
out vec2 V0;
out vec4 V1;
void main(void) {
gl_Position = A0;
@ -979,8 +979,8 @@ void main(void) {
}`,
GlslFS: glslFragmentPrelude + `
uniform float U0;
in float V0;
in vec2 V1;`,
in vec2 V0;
in vec4 V1;`,
},
{
Name: "FragmentFunc",
@ -991,12 +991,12 @@ in vec2 V1;`,
},
Attributes: []shaderir.Type{
{Main: shaderir.Vec4},
{Main: shaderir.Float},
{Main: shaderir.Vec2},
{Main: shaderir.Vec4},
},
Varyings: []shaderir.Type{
{Main: shaderir.Float},
{Main: shaderir.Vec2},
{Main: shaderir.Vec4},
},
VertexFunc: shaderir.VertexFunc{
Block: block(
@ -1016,39 +1016,39 @@ in vec2 V1;`,
),
),
},
ColorsOutCount: 1,
FragmentFunc: shaderir.FragmentFunc{
Block: block(
[]shaderir.Type{
{Main: shaderir.Vec2},
{Main: shaderir.Vec4},
{Main: shaderir.Float},
},
3,
assignStmt(
localVariableExpr(3),
localVariableExpr(0),
),
3+1,
assignStmt(
localVariableExpr(4),
localVariableExpr(1),
),
returnStmt(
callExpr(
builtinFuncExpr(shaderir.Vec4F),
localVariableExpr(2),
localVariableExpr(1),
localVariableExpr(1),
),
assignStmt(
localVariableExpr(5),
localVariableExpr(2),
),
assignStmt(
localVariableExpr(3),
localVariableExpr(0),
),
shaderir.Stmt{
Type: shaderir.Return,
},
),
},
},
GlslVS: glslVertexPrelude + `
uniform float U0;
in vec4 A0;
in float A1;
in vec2 A2;
out float V0;
out vec2 V1;
in vec2 A1;
in vec4 A2;
out vec2 V0;
out vec4 V1;
void main(void) {
gl_Position = A0;
@ -1057,21 +1057,22 @@ void main(void) {
}`,
GlslFS: glslFragmentPrelude + `
uniform float U0;
in float V0;
in vec2 V1;
in vec2 V0;
in vec4 V1;
vec4 F0(in vec4 l0, in float l1, in vec2 l2);
void F0(in vec4 l0, in vec2 l1, in vec4 l2, out vec4 l3);
vec4 F0(in vec4 l0, in float l1, in vec2 l2) {
vec4 l3 = vec4(0);
float l4 = float(0);
l3 = l0;
void F0(in vec4 l0, in vec2 l1, in vec4 l2, out vec4 l3) {
vec2 l4 = vec2(0);
vec4 l5 = vec4(0);
l4 = l1;
return vec4(l2, l1, l1);
l5 = l2;
l3 = l0;
return;
}
void main(void) {
fragColor = F0(gl_FragCoord, V0, V1);
F0(gl_FragCoord, V0, V1, gl_FragData[0]);
}`,
},
}
@ -1093,14 +1094,14 @@ void main(void) {
t.Errorf("%s fragment: got: %s, want: %s", tc.Name, got, want)
}
}
m := msl.Compile(&tc.Program)
/*m := msl.Compile(&tc.Program)
if tc.Metal != "" {
got := m
want := tc.Metal + "\n"
if got != want {
t.Errorf("%s metal: got: %s, want: %s", tc.Name, got, want)
}
}
}*/
})
}
}

19
internal/shaderir/program.go
View File

@ -47,15 +47,16 @@ func (s SourceHash) String() string {
}
type Program struct {
UniformNames []string
Uniforms []Type
TextureCount int
Attributes []Type
Varyings []Type
Funcs []Func
VertexFunc VertexFunc
FragmentFunc FragmentFunc
Unit Unit
UniformNames []string
Uniforms []Type
TextureCount int
ColorsOutCount int
Attributes []Type
Varyings []Type
Funcs []Func
VertexFunc VertexFunc
FragmentFunc FragmentFunc
Unit Unit
SourceHash SourceHash

27
internal/ui/image.go
View File

@ -116,6 +116,33 @@ func (i *Image) DrawTriangles(srcs [graphics.ShaderSrcImageCount]*Image, vertice
i.mipmap.DrawTriangles(srcMipmaps, vertices, indices, blend, dstRegion, srcRegions, shader.shader, uniforms, fillRule, canSkipMipmap)
}
func DrawTrianglesMRT(dsts [graphics.ShaderDstImageCount]*Image, srcs [graphics.ShaderSrcImageCount]*Image, vertices []float32, indices []uint32, blend graphicsdriver.Blend, dstRegion image.Rectangle, srcRegions [graphics.ShaderSrcImageCount]image.Rectangle, shader *Shader, uniforms []uint32, fillRule graphicsdriver.FillRule, canSkipMipmap bool, antialias bool) {
var dstMipmaps [graphics.ShaderDstImageCount]*mipmap.Mipmap
for i, dst := range dsts {
if dst == nil {
continue
}
if dst.modifyCallback != nil {
dst.modifyCallback()
}
dst.lastBlend = blend
dst.flushBufferIfNeeded()
dstMipmaps[i] = dst.mipmap
}
var srcMipmaps [graphics.ShaderSrcImageCount]*mipmap.Mipmap
for i, src := range srcs {
if src == nil {
continue
}
src.flushBufferIfNeeded()
srcMipmaps[i] = src.mipmap
}
mipmap.DrawTrianglesMRT(dstMipmaps, srcMipmaps, vertices, indices, blend, dstRegion, srcRegions, shader.shader, uniforms, fillRule, canSkipMipmap)
}
func (i *Image) WritePixels(pix []byte, region image.Rectangle) {
if i.modifyCallback != nil {
i.modifyCallback()

152
shader_test.go
View File

@ -2595,3 +2595,155 @@ func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
}
}
}
// Issue #2930
func TestShaderMRT(t *testing.T) {
const w, h = 16, 16
s, err := ebiten.NewShader([]byte(`//kage:unit pixels
package main
func Fragment(dstPos vec4, srcPos vec2, color vec4) (vec4, vec4, vec4, vec4, vec4, vec4, vec4, vec4) {
return vec4(1, 0, 0, 1),
vec4(0, 1, 0, 1),
vec4(0, 0, 1, 1),
vec4(1, 0, 1, 1),
vec4(1, 1, 0, 1),
vec4(0, 1, 1, 1),
vec4(1, 1, 1, 1),
vec4(1, 1, 1, 0)
}
`))
if err != nil {
t.Fatal(err)
}
bounds := image.Rect(0, 0, w, h)
opts := &ebiten.NewImageOptions{
Unmanaged: true,
}
vertices := []ebiten.Vertex{
{
DstX: 0,
DstY: 0,
},
{
DstX: w,
DstY: 0,
},
{
DstX: 0,
DstY: h,
},
{
DstX: w,
DstY: h,
},
}
indices := []uint16{0, 1, 2, 1, 2, 3}
t.Run("8 locations", func(t *testing.T) {
imgs := [8]*ebiten.Image{
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
}
wantColors := [8]color.RGBA{
{R: 0xff, G: 0, B: 0, A: 0xff},
{R: 0, G: 0xff, B: 0, A: 0xff},
{R: 0, G: 0, B: 0xff, A: 0xff},
{R: 0xff, G: 0, B: 0xff, A: 0xff},
{R: 0xff, G: 0xff, B: 0, A: 0xff},
{R: 0, G: 0xff, B: 0xff, A: 0xff},
{R: 0xff, G: 0xff, B: 0xff, A: 0xff},
{R: 0xff, G: 0xff, B: 0xff, A: 0},
}
ebiten.DrawTrianglesShaderMRT(imgs, vertices, indices, s, nil)
for k, dst := range imgs {
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
got := dst.At(i, j).(color.RGBA)
want := wantColors[k]
if !sameColors(got, want, 1) {
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
}
}
}
}
})
t.Run("Empty locations", func(t *testing.T) {
imgs := [8]*ebiten.Image{
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
}
wantColors := [8]color.RGBA{
{},
{R: 0, G: 0xff, B: 0, A: 0xff},
{},
{R: 0xff, G: 0, B: 0xff, A: 0xff},
{},
{R: 0, G: 0xff, B: 0xff, A: 0xff},
{},
{R: 0xff, G: 0xff, B: 0xff, A: 0},
}
dsts := [8]*ebiten.Image{
nil, imgs[1], nil, imgs[3], nil, imgs[5], nil, imgs[7],
}
ebiten.DrawTrianglesShaderMRT(dsts, vertices, indices, s, nil)
for k, dst := range imgs {
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
got := dst.At(i, j).(color.RGBA)
want := wantColors[k]
if !sameColors(got, want, 1) {
t.Errorf("%d dst.At(%d, %d): got: %v, want: %v", k, i, j, got, want)
}
}
}
}
})
t.Run("1 location (first slot)", func(t *testing.T) {
imgs := [8]*ebiten.Image{
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
ebiten.NewImageWithOptions(bounds, opts),
}
wantColors := [8]color.RGBA{
{R: 0xff, G: 0, B: 0, A: 0xff},
{}, {}, {}, {}, {}, {}, {},
}
dsts := [8]*ebiten.Image{
imgs[0], nil, nil, nil, nil, nil, nil, nil,
}
ebiten.DrawTrianglesShaderMRT(dsts, vertices, indices, s, nil)
for k, dst := range imgs {
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
got := dst.At(i, j).(color.RGBA)
want := wantColors[k]
if !sameColors(got, want, 1) {
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
}
}
}
}
})
}