From 560e79511e4ba6e1e26180802f90e6077cf6e088 Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Fri, 16 Dec 2016 00:41:03 +0100
Subject: [PATCH] add VertexArray.Indices
---
pixelgl/vertex.go | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/pixelgl/vertex.go b/pixelgl/vertex.go
index 7ff2ebf..053457c 100644
--- a/pixelgl/vertex.go
+++ b/pixelgl/vertex.go
@@ -183,6 +183,21 @@ func (va *VertexArray) SetIndices(indices []int) {
})
}
+// Indices returns the current indices of triangles to be drawn.
+func (va *VertexArray) Indices() []int {
+ indices32 := make([]uint32, va.indexNum)
+ Do(func() {
+ va.ebo.bind()
+ gl.GetBufferSubData(gl.ELEMENT_ARRAY_BUFFER, 0, 4*len(indices32), gl.Ptr(indices32))
+ va.ebo.restore()
+ })
+ indices := make([]int, len(indices32))
+ for i := range indices {
+ indices[i] = int(indices32[i])
+ }
+ return indices
+}
+
// SetVertexAttr sets the value of the specified vertex attribute of the specified vertex.
//
// If the vertex attribute does not exist, this method returns false. If the vertex is out of range,
--
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