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graphics: Use a const viewport

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This commit is contained in:
Hajime Hoshi 2016-06-06 01:49:34 +09:00
parent 8d17d1876c
commit 9757319848
1 changed files with 7 additions and 5 deletions
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12
internal/graphics/framebuffer.go
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@ -73,9 +73,11 @@ func (f *Framebuffer) Dispose(c *opengl.Context) error {
return nil return nil
} }
const viewportSize = 4096
func (f *Framebuffer) setAsViewport(c *opengl.Context) error { func (f *Framebuffer) setAsViewport(c *opengl.Context) error {
width := int(NextPowerOf2Int32(int32(f.width))) width := viewportSize
height := int(NextPowerOf2Int32(int32(f.height))) height := viewportSize
return c.SetViewport(f.native, width, height) return c.SetViewport(f.native, width, height)
} }
@ -83,12 +85,12 @@ func (f *Framebuffer) projectionMatrix() *[4][4]float64 {
if f.proMatrix != nil { if f.proMatrix != nil {
return f.proMatrix return f.proMatrix
} }
width := int(NextPowerOf2Int32(int32(f.width))) width := viewportSize
height := int(NextPowerOf2Int32(int32(f.height))) height := viewportSize
m := orthoProjectionMatrix(0, width, 0, height) m := orthoProjectionMatrix(0, width, 0, height)
if f.flipY { if f.flipY {
m[1][1] *= -1 m[1][1] *= -1
m[1][3] += float64(f.height) / float64(NextPowerOf2Int32(int32(f.height))) * 2 m[1][3] += float64(f.height) / float64(height) * 2
} }
f.proMatrix = m f.proMatrix = m
return f.proMatrix return f.proMatrix