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graphicsdriver/opengl: Bug fix: variables can be optimized out

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Hajime Hoshi 2018-12-23 06:04:35 +09:00
parent 189b8a17e9
commit 85df49dc96
1 changed files with 2 additions and 0 deletions
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2
internal/graphicsdriver/opengl/shader.go
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@ -157,6 +157,8 @@ void main(void) {
#if defined(FILTER_SCREEN) #if defined(FILTER_SCREEN)
highp vec2 p0 = pos - texel_size / 2.0 / scale; highp vec2 p0 = pos - texel_size / 2.0 / scale;
highp vec2 p1 = pos + texel_size / 2.0 / scale; highp vec2 p1 = pos + texel_size / 2.0 / scale;
// Prevent this variable from being optimized out.
p0 += varying_tex_region.xy - varying_tex_region.xy;
p1 = adjustTexel(p0, p1); p1 = adjustTexel(p0, p1);