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xash3d-fwgs
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ref: gl: only enable/disable texture units in fixed-function pipeline rendering, in our case, low TMUs

This commit is contained in:
Alibek Omarov 2023-08-21 10:01:59 +03:00
parent 4ed562697b
commit 22f60d50ac
3 changed files with 26 additions and 6 deletions
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26
ref/gl/gl_backend.c
View File

@ -259,6 +259,27 @@ void GL_MultiTexCoord2f( GLenum texture, GLfloat s, GLfloat t )
pglMultiTexCoord2f( texture + GL_TEXTURE0_ARB, s, t );
}
/*
====================
GL_EnableTextureUnit
====================
*/
void GL_EnableTextureUnit( int tmu, qboolean enable )
{
// only enable fixed-function pipeline units
if( tmu < glConfig.max_texture_units )
{
if( enable )
{
pglEnable( glState.currentTextureTargets[tmu] );
}
else if( glState.currentTextureTargets[tmu] != GL_NONE )
{
pglDisable( glState.currentTextureTargets[tmu] );
}
}
}
/*
=================
GL_TextureTarget
@ -274,11 +295,10 @@ void GL_TextureTarget( uint target )
if( glState.currentTextureTargets[glState.activeTMU] != target )
{
if( glState.currentTextureTargets[glState.activeTMU] != GL_NONE )
pglDisable( glState.currentTextureTargets[glState.activeTMU] );
GL_EnableTextureUnit( glState.activeTMU, false );
glState.currentTextureTargets[glState.activeTMU] = target;
if( target != GL_NONE )
pglEnable( glState.currentTextureTargets[glState.activeTMU] );
GL_EnableTextureUnit( glState.activeTMU, true );
}
}

5
ref/gl/gl_image.c
View File

@ -105,10 +105,9 @@ void GL_Bind( GLint tmu, GLenum texnum )
if( glState.currentTextureTargets[tmu] != glTarget )
{
if( glState.currentTextureTargets[tmu] != GL_NONE )
pglDisable( glState.currentTextureTargets[tmu] );
GL_EnableTextureUnit( tmu, false );
glState.currentTextureTargets[tmu] = glTarget;
pglEnable( glState.currentTextureTargets[tmu] );
GL_EnableTextureUnit( tmu, true );
}
if( glState.currentTextures[tmu] == texture->texnum )

1
ref/gl/gl_local.h
View File

@ -301,6 +301,7 @@ void GL_CleanupAllTextureUnits( void );
void GL_LoadIdentityTexMatrix( void );
void GL_DisableAllTexGens( void );
void GL_SetRenderMode( int mode );
void GL_EnableTextureUnit( int tmu, qboolean enable );
void GL_TextureTarget( uint target );
void GL_Cull( GLenum cull );
void R_ShowTextures( void );