53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package gl
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// This file contains GL Types and their methods that are independent of the
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// "gldebug" build tag.
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import "code.google.com/p/go.mobile/f32"
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// WriteAffine writes the contents of an Affine to a 3x3 matrix GL uniform.
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func (u Uniform) WriteAffine(a *f32.Affine) {
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var m [9]float32
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m[0*3+0] = a[0][0]
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m[0*3+1] = a[1][0]
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m[0*3+2] = 0
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m[1*3+0] = a[0][1]
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m[1*3+1] = a[1][1]
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m[1*3+2] = 0
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m[2*3+0] = a[0][2]
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m[2*3+1] = a[1][2]
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m[2*3+2] = 1
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UniformMatrix3fv(u, m[:])
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}
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// WriteMat4 writes the contents of a 4x4 matrix to a GL uniform.
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func (u Uniform) WriteMat4(p *f32.Mat4) {
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var m [16]float32
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m[0*3+0] = p[0][0]
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m[0*3+1] = p[1][0]
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m[0*3+2] = p[2][0]
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m[0*3+3] = p[3][0]
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m[1*3+0] = p[0][1]
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m[1*3+1] = p[1][1]
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m[1*3+2] = p[2][1]
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m[1*3+3] = p[3][1]
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m[2*3+0] = p[0][2]
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m[2*3+1] = p[1][2]
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m[2*3+2] = p[2][2]
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m[2*3+3] = p[3][2]
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m[3*3+0] = p[0][3]
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m[3*3+1] = p[1][3]
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m[3*3+2] = p[2][3]
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m[3*3+3] = p[3][3]
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UniformMatrix4fv(u, m[:])
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}
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// WriteVec4 writes the contents of a 4-element vector to a GL uniform.
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func (u Uniform) WriteVec4(v *f32.Vec4) {
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Uniform4f(u, v[0], v[1], v[2], v[3])
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}
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