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hack updated to disable GL_TEXTURE_2D => works better on wayland

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especially important was disabling GL_TEXTURE_2D and setting up the
transformation matrix properly
This commit is contained in:
Daniel Gibson 2022-01-23 00:29:04 +01:00
parent b468203a37
commit ded470f137
1 changed files with 47 additions and 8 deletions
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55
neo/renderer/tr_backend.cpp
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@ -531,26 +531,65 @@ const void RB_SwapBuffers( const void *data ) {
#if 01 // set alpha chan to 1.0:
bool blendEnabled = qglIsEnabled( GL_BLEND );
//if ( !blendEnabled )
if ( !blendEnabled )
qglEnable( GL_BLEND );
// TODO: GL_DEPTH_TEST ? (should be disabled, if it needs changing at all)
bool scissorEnabled = qglIsEnabled( GL_SCISSOR_TEST );
if( scissorEnabled )
qglDisable( GL_SCISSOR_TEST );
bool tex2Denabled = qglIsEnabled( GL_TEXTURE_2D );
if( tex2Denabled )
qglDisable( GL_TEXTURE_2D );
qglDisable( GL_VERTEX_PROGRAM_ARB );
qglDisable( GL_FRAGMENT_PROGRAM_ARB );
qglBlendEquation( GL_FUNC_ADD );
//qglBlendEquation(GL_MAX);
qglBlendFunc( GL_ONE, GL_ONE );
// setup transform matrices so we can easily/reliably draw a fullscreen quad
qglMatrixMode( GL_MODELVIEW );
qglPushMatrix();
qglLoadIdentity();
qglMatrixMode( GL_PROJECTION );
qglPushMatrix();
qglLoadIdentity();
qglOrtho( 0, 1, 0, 1, -1, 1 );
// draw screen-sized quad with color (0.0, 0.0, 0.0, 1.0)
int w = glConfig.vidWidth, h = glConfig.vidHeight;
int x = 0, y = 0;
qglColor4f( 0.5f, 0.0f, 0.0f, 1.0f );
float x=0, y=0, w=1, h=1;
qglColor4f( 0.0f, 0.0f, 0.0f, 1.0f );
// debug values:
//float x = 0.1, y = 0.1, w = 0.8, h = 0.8;
//qglColor4f( 0.0f, 0.0f, 0.5f, 1.0f );
qglBegin( GL_QUADS );
qglVertex2f( x, y );
qglVertex2f( x + w, y );
qglVertex2f( x + w, y + h );
qglVertex2f( x, y + h );
qglVertex2f( x, y ); // ( 0,0 );
qglVertex2f( x, y+h ); // ( 0,1 );
qglVertex2f( x+w, y+h ); // ( 1,1 );
qglVertex2f( x+w, y ); // ( 1,0 );
qglEnd();
// restore previous transform matrix states
qglPopMatrix(); // for projection
qglMatrixMode( GL_MODELVIEW );
qglPopMatrix(); // for modelview
// restore default or previous states
qglBlendEquation( GL_FUNC_ADD );
if ( !blendEnabled )
qglDisable( GL_BLEND );
if( tex2Denabled )
qglEnable( GL_TEXTURE_2D );
if( scissorEnabled )
qglEnable( GL_SCISSOR_TEST );
// TODO: theoretically I should restore the glColor value, but I'm sure it'll be set before it's needed anyway
#endif