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Enable alpha test for bitmaps in OpenGL GAL.

This commit is contained in:
Alex Shvartzkop 2023-12-31 15:05:00 +05:00
parent e8fabb58a6
commit 965576f2c6
1 changed files with 5 additions and 0 deletions
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5
common/gal/opengl/opengl_gal.cpp
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@ -1492,6 +1492,9 @@ void OPENGL_GAL::DrawBitmap( const BITMAP_BASE& aBitmap, double alphaBlend )
glDepthFunc( GL_ALWAYS );
glAlphaFunc( GL_GREATER, 0.01f );
glEnable( GL_ALPHA_TEST );
glMatrixMode( GL_TEXTURE );
glPushMatrix();
glTranslated( 0.5, 0.5, 0.5 );
@ -1538,6 +1541,8 @@ void OPENGL_GAL::DrawBitmap( const BITMAP_BASE& aBitmap, double alphaBlend )
glPopMatrix();
glMatrixMode( GL_MODELVIEW );
glDisable( GL_ALPHA_TEST );
glDepthFunc( GL_LESS );
}