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graphics: Refactoring: Rename functions

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This commit is contained in:
Hajime Hoshi 2018-06-10 17:53:57 +09:00
parent 32ac3840a7
commit 2853895e6b
3 changed files with 13 additions and 12 deletions
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6
internal/graphics/command.go
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@ -209,9 +209,9 @@ type drawImageCommand struct {
filter Filter filter Filter
} }
// QuadVertexSizeInBytes returns the size in bytes of vertices for a quadrangle. // VertexSizeInBytes returns the size in bytes of one vertex.
func QuadVertexSizeInBytes() int { func VertexSizeInBytes() int {
return 4 * theArrayBufferLayout.totalBytes() return theArrayBufferLayout.totalBytes()
} }
// Exec executes the drawImageCommand. // Exec executes the drawImageCommand.

4
internal/graphics/image.go
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@ -89,10 +89,10 @@ func (i *Image) Size() (int, int) {
func (i *Image) DrawImage(src *Image, vertices []float32, clr *affine.ColorM, mode opengl.CompositeMode, filter Filter) { func (i *Image) DrawImage(src *Image, vertices []float32, clr *affine.ColorM, mode opengl.CompositeMode, filter Filter) {
for len(vertices) > 0 { for len(vertices) > 0 {
var next []float32 var next []float32
nq := len(vertices) * opengl.Float.SizeInBytes() / QuadVertexSizeInBytes() nq := len(vertices) * opengl.Float.SizeInBytes() / VertexSizeInBytes() / 4
if nq > maxQuads { if nq > maxQuads {
nq = maxQuads nq = maxQuads
i := nq * QuadVertexSizeInBytes() / opengl.Float.SizeInBytes() i := 4 * nq * VertexSizeInBytes() / opengl.Float.SizeInBytes()
next = vertices[i:] next = vertices[i:]
vertices = vertices[:i] vertices = vertices[:i]
} }

15
internal/restorable/vertices.go
View File

@ -17,10 +17,10 @@ package restorable
import ( import (
"github.com/hajimehoshi/ebiten/internal/affine" "github.com/hajimehoshi/ebiten/internal/affine"
"github.com/hajimehoshi/ebiten/internal/graphics" "github.com/hajimehoshi/ebiten/internal/graphics"
"github.com/hajimehoshi/ebiten/internal/opengl"
) )
var ( var (
quadFloat32Num = graphics.QuadVertexSizeInBytes() / 4
theVerticesBackend = &verticesBackend{} theVerticesBackend = &verticesBackend{}
) )
@ -29,14 +29,15 @@ type verticesBackend struct {
head int head int
} }
func (v *verticesBackend) get() []float32 { func (v *verticesBackend) sliceForOneQuad() []float32 {
const num = 256 const num = 256
size := 4 * graphics.VertexSizeInBytes() / opengl.Float.SizeInBytes()
if v.backend == nil { if v.backend == nil {
v.backend = make([]float32, quadFloat32Num*num) v.backend = make([]float32, size*num)
} }
s := v.backend[v.head : v.head+quadFloat32Num] s := v.backend[v.head : v.head+size]
v.head += quadFloat32Num v.head += size
if v.head+quadFloat32Num > len(v.backend) { if v.head+size > len(v.backend) {
v.backend = nil v.backend = nil
v.head = 0 v.head = 0
} }
@ -51,7 +52,7 @@ func vertices(width, height int, sx0, sy0, sx1, sy1 int, geo *affine.GeoM) []flo
return nil return nil
} }
vs := theVerticesBackend.get() vs := theVerticesBackend.sliceForOneQuad()
x0, y0 := 0.0, 0.0 x0, y0 := 0.0, 0.0
x1, y1 := float64(sx1-sx0), float64(sy1-sy0) x1, y1 := float64(sx1-sx0), float64(sy1-sy0)