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Refactoring
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parent
d4fd3adc53
commit
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@ -92,6 +92,7 @@ func (ui *GlutUI) Run(device *graphics.Device) {
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type DemoGame struct {
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ebitenTexture *graphics.Texture
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x int
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}
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func (game *DemoGame) Update() {
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@ -109,6 +110,7 @@ func (game *DemoGame) Update() {
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game.ebitenTexture = currentUI.device.NewTextureFromImage(img)
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}
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game.x++
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}
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func (game *DemoGame) Draw(g *graphics.GraphicsContext, offscreen *graphics.Texture) {
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@ -116,9 +118,12 @@ func (game *DemoGame) Draw(g *graphics.GraphicsContext, offscreen *graphics.Text
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if game.ebitenTexture == nil {
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return
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}
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geometryMatrix := graphics.IdentityGeometryMatrix()
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geometryMatrix.SetTx(graphics.AffineMatrixElement(game.x))
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geometryMatrix.SetTy(graphics.AffineMatrixElement(game.x))
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g.DrawTexture(game.ebitenTexture,
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0, 0, game.ebitenTexture.Width, game.ebitenTexture.Height,
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graphics.IdentityGeometryMatrix(),
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geometryMatrix,
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graphics.IdentityColorMatrix())
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}
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@ -8,7 +8,6 @@ import "C"
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import (
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"fmt"
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"image/color"
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"math"
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"unsafe"
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)
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@ -110,10 +109,20 @@ func (context *GraphicsContext) DrawTexture(texture *Texture,
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C.glDisableClientState(C.GL_VERTEX_ARRAY)
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}
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func abs(x int) int {
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if x < 0 {
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return -x
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}
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return x
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}
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func (context *GraphicsContext) SetOffscreen(texture *Texture) {
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framebuffer := C.GLuint(0)
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if texture != nil {
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framebuffer = context.getFramebuffer(texture)
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if framebuffer == context.mainFramebuffer {
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panic("invalid framebuffer")
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}
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} else {
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framebuffer = context.mainFramebuffer
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}
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@ -136,9 +145,7 @@ func (context *GraphicsContext) SetOffscreen(texture *Texture) {
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tx = -1
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ty = 1
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}
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C.glViewport(0, 0,
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C.GLsizei(math.Abs(float64(width))),
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C.GLsizei(math.Abs(float64(height))))
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C.glViewport(0, 0, C.GLsizei(abs(width)), C.GLsizei(abs(height)))
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e11 := float32(2.0) / float32(width)
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e22 := float32(2.0) / float32(height)
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e41 := float32(tx)
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