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Add assertion

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This commit is contained in:
Hajime Hoshi 2013-07-10 22:59:38 +09:00
parent 4e4cd85a35
commit 984d572cb0
1 changed files with 3 additions and 1 deletions
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4
graphics/opengl/context.go
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@ -153,8 +153,10 @@ func (context *Context) DrawTexture(
func (context *Context) DrawTextureParts(
textureID graphics.TextureID, parts []graphics.TexturePart,
geometryMatrix matrix.Geometry, colorMatrix matrix.Color) {
texture := context.textures[textureID]
if texture == nil {
panic("invalid texture ID")
}
context.setShaderProgram(geometryMatrix, colorMatrix)
C.glBindTexture(C.GL_TEXTURE_2D, texture.id)