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shaders: Fix transparency on GC7000L (#10036)

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Workaround for the missing GL_ALPHA_TEST implementation in Mesa (etnaviv driver).
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mntmn 2020-08-25 20:49:51 +02:00 • committed by GitHub
parent f27cf47779
commit 44c98089cf
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3 changed files with 34 additions and 0 deletions
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8
client/shaders/nodes_shader/opengl_fragment.glsl
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@ -190,6 +190,14 @@ void main(void)
#endif
vec4 base = texture2D(baseTexture, uv).rgba;
#ifdef USE_DISCARD
// If alpha is zero, we can just discard the pixel. This fixes transparency
// on GPUs like GC7000L, where GL_ALPHA_TEST is not implemented in mesa.
if (base.a == 0.0) {
discard;
}
#endif
#ifdef ENABLE_BUMPMAPPING
if (use_normalmap) {
vec3 L = normalize(lightVec);