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gpu/internal/opengl,internal/gl: avoid glBufferSubData after glBufferData

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On my Fedora Intel GPU, issuing a glBufferSubData immediately after a
glBufferData with no data may leave the buffer cleared.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2021-08-25 13:20:01 +02:00
parent b90e80f03e
commit b9ede6d735
5 changed files with 27 additions and 13 deletions
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gpu/internal/opengl/srgb.go
+1 -2
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@@ -72,8 +72,7 @@ func (s *SRGBFBO) Blit() {
-1, -1, 0, 0,
+1, -1, 1, 0,
})
s.c.BufferData(gl.ARRAY_BUFFER, len(coords), gl.STATIC_DRAW)
s.c.BufferSubData(gl.ARRAY_BUFFER, 0, coords)
s.c.BufferData(gl.ARRAY_BUFFER, len(coords), gl.STATIC_DRAW, coords)
s.blitted = true
}
s.state.useProgram(s.c, s.prog)