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Fix GLES2 discard behaviour (texture transparency)

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sfan5
2021-09-10 21:59:29 +02:00
parent d1e0f73b77
commit ea250ff5c5
3 changed files with 18 additions and 8 deletions
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9
client/shaders/nodes_shader/opengl_fragment.glsl
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@@ -463,13 +463,16 @@ void main(void)
vec2 uv = varTexCoord.st;
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,
// and also on GLES 2, where GL_ALPHA_TEST is missing entirely.
if (base.a == 0.0) {
#ifdef USE_DISCARD
if (base.a == 0.0)
discard;
#endif
#ifdef USE_DISCARD_REF
if (base.a < 0.5)
discard;
}
#endif
color = base.rgb;