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Remove currentVBO

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This commit is contained in:
Hajime Hoshi 2014-12-26 01:19:08 +09:00
parent c156cb1e66
commit 389b2b75f2
1 changed files with 8 additions and 14 deletions
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22
internal/opengl/internal/shader/drawtexture.go
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@ -33,29 +33,20 @@ type Matrix interface {
Element(i, j int) float64
}
type vbo struct {
indexBuffer gl.Buffer
vertexBuffer gl.Buffer
}
var initialized = false
const size = 10000
var currentVBO *vbo
const uint16Size = 2
const short32Size = 4
func DrawTexture(native gl.Texture, projectionMatrix [4][4]float64, quads []TextureQuad, geo Matrix, color Matrix) {
// TODO: Check len(quads) and gl.MAX_ELEMENTS_INDICES?
const stride = 4 * 4
if currentVBO == nil {
if !initialized {
initialize()
currentVBO = &vbo{
indexBuffer: gl.GenBuffer(),
vertexBuffer: gl.GenBuffer(),
}
currentVBO.indexBuffer.Bind(gl.ELEMENT_ARRAY_BUFFER)
indexBuffer := gl.GenBuffer()
indexBuffer.Bind(gl.ELEMENT_ARRAY_BUFFER)
indices := make([]uint16, 6*size)
for i := uint16(0); i < size; i++ {
indices[6*i+0] = 4*i + 0
@ -67,9 +58,12 @@ func DrawTexture(native gl.Texture, projectionMatrix [4][4]float64, quads []Text
}
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, uint16Size*len(indices), indices, gl.STATIC_DRAW)
currentVBO.vertexBuffer.Bind(gl.ARRAY_BUFFER)
vertexBuffer := gl.GenBuffer()
vertexBuffer.Bind(gl.ARRAY_BUFFER)
vertices := make([]float32, stride*size)
gl.BufferData(gl.ARRAY_BUFFER, short32Size*len(vertices), vertices, gl.DYNAMIC_DRAW)
initialized = true
}
if len(quads) == 0 {