diff options
Diffstat (limited to 'vendor/golang.org/x/mobile/gl/gl.go')
| -rw-r--r-- | vendor/golang.org/x/mobile/gl/gl.go | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/vendor/golang.org/x/mobile/gl/gl.go b/vendor/golang.org/x/mobile/gl/gl.go index 95f7468..195a309 100644 --- a/vendor/golang.org/x/mobile/gl/gl.go +++ b/vendor/golang.org/x/mobile/gl/gl.go @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +//go:build (darwin || linux || openbsd || windows) && !gldebug // +build darwin linux openbsd windows // +build !gldebug @@ -1284,6 +1285,14 @@ func (ctx *context) TexImage2D(target Enum, level int, internalFormat int, width } func (ctx *context) TexSubImage2D(target Enum, level int, x, y, width, height int, format, ty Enum, data []byte) { + // It is common to pass TexSubImage2D a nil data, indicating that a + // bound GL buffer is being used as the source. In that case, it + // is not necessary to block. + parg := unsafe.Pointer(nil) + if len(data) > 0 { + parg = unsafe.Pointer(&data[0]) + } + ctx.enqueue(call{ args: fnargs{ fn: glfnTexSubImage2D, @@ -1297,8 +1306,8 @@ func (ctx *context) TexSubImage2D(target Enum, level int, x, y, width, height in a6: format.c(), a7: ty.c(), }, - parg: unsafe.Pointer(&data[0]), - blocking: true, + parg: parg, + blocking: parg != nil, }) } |