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https://github.com/hajimehoshi/ebiten.git
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graphics: Reduce calls of glUniformMatrix4fv
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parent
bddd3c9467
commit
4812f2e76e
22
image.go
22
image.go
@ -269,6 +269,24 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
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parts = &wholeImage{image.impl.width, image.impl.height}
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parts = &wholeImage{image.impl.width, image.impl.height}
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}
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}
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}
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}
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geom := &options.GeoM
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colorm := &options.ColorM
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dxf := geom.Element(0, 2)
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dyf := geom.Element(1, 2)
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// If possible, avoid using a geometry matrix so that we can reduce calls of
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// glUniformMatrix4fv.
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if geom.Element(0, 0) == 1 && geom.Element(1, 0) == 0 && geom.Element(0, 1) == 0 && geom.Element(1, 1) == 1 && (dxf != 0 && dyf != 0) {
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if dxf == float64(int64(dxf)) && dyf == float64(int64(dyf)) {
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dx := int(dxf)
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dy := int(dyf)
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parts = &transitionImageParts{
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parts: parts,
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dx: dx,
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dy: dy,
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}
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geom = &GeoM{}
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}
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}
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quads := &textureQuads{parts: parts, width: image.impl.width, height: image.impl.height}
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quads := &textureQuads{parts: parts, width: image.impl.width, height: image.impl.height}
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// TODO: Reuse one vertices instead of making here, but this would need locking.
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// TODO: Reuse one vertices instead of making here, but this would need locking.
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vertices := make([]int16, parts.Len()*16)
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vertices := make([]int16, parts.Len()*16)
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@ -286,8 +304,8 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
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return errors.New("ebiten: image is already disposed")
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return errors.New("ebiten: image is already disposed")
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}
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}
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i.pixels = nil
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i.pixels = nil
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m := opengl.CompositeMode(options.CompositeMode)
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mode := opengl.CompositeMode(options.CompositeMode)
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return i.framebuffer.DrawTexture(ui.GLContext(), image.impl.texture, vertices[:16*n], &options.GeoM, &options.ColorM, m)
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return i.framebuffer.DrawTexture(ui.GLContext(), image.impl.texture, vertices[:16*n], geom, colorm, mode)
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}
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}
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if theDelayedImageTasks.add(f) {
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if theDelayedImageTasks.add(f) {
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return nil
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return nil
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@ -124,3 +124,22 @@ func (t *textureQuads) vertices(vertices []int16) int {
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}
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}
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return n
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return n
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}
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}
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type transitionImageParts struct {
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parts ImageParts
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dx int
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dy int
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}
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func (t *transitionImageParts) Len() int {
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return t.parts.Len()
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}
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func (t *transitionImageParts) Dst(index int) (int, int, int, int) {
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x0, y0, x1, y1 := t.parts.Dst(index)
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return x0 + t.dx, y0 + t.dy, x1 + t.dx, y1 + t.dy
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}
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func (t *transitionImageParts) Src(index int) (int, int, int, int) {
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return t.parts.Src(index)
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}
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