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Draw if alpha is greater than 0x01 (previously 0x03). In practice, numbers this low can be useful for certain blend effects.

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This commit is contained in:
Colby Klein
2011-03-14 02:34:03 -07:00
parent ac605ebbf7
commit b5a49f9dab
1 changed files with 28 additions and 23 deletions
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src/RageDisplay_Legacy.cpp
+28 -23
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@@ -2563,13 +2563,18 @@ RString RageDisplay_Legacy::GetTextureDiagnostics( unsigned iTexture ) const
return RString(); return RString();
} }
void RageDisplay_Legacy::SetAlphaTest( bool b ) /*
* XXX: Things like this only have to be set once per context - making
* SetDefault call These kinds of functions is wasteful. -Colby
*/
void RageDisplay_Legacy::SetAlphaTest(bool b)
{ {
glAlphaFunc( GL_GREATER, 0.01f ); // Previously this was 0.01, rather than 0x01.
if( b ) glAlphaFunc(GL_GREATER, 0.00390625 /* 1/256 */);
glEnable( GL_ALPHA_TEST ); if(b)
glEnable(GL_ALPHA_TEST);
else else
glDisable( GL_ALPHA_TEST ); glDisable(GL_ALPHA_TEST);
} }
@@ -2587,7 +2592,7 @@ void RageDisplay_Legacy::SetAlphaTest( bool b )
* Another case of this is incomplete packed pixels support. Some implementations * Another case of this is incomplete packed pixels support. Some implementations
* neglect GL_UNSIGNED_SHORT_*_REV. * neglect GL_UNSIGNED_SHORT_*_REV.
*/ */
bool RageDisplay_Legacy::SupportsSurfaceFormat( PixelFormat pixfmt ) bool RageDisplay_Legacy::SupportsSurfaceFormat(PixelFormat pixfmt)
{ {
switch( g_GLPixFmtInfo[pixfmt].type ) switch( g_GLPixFmtInfo[pixfmt].type )
{ {
@@ -2599,15 +2604,15 @@ bool RageDisplay_Legacy::SupportsSurfaceFormat( PixelFormat pixfmt )
} }
bool RageDisplay_Legacy::SupportsTextureFormat( PixelFormat pixfmt, bool bRealtime ) bool RageDisplay_Legacy::SupportsTextureFormat(PixelFormat pixfmt, bool bRealtime)
{ {
/* If we support a pixfmt for texture formats but not for surface formats, then /* If we support a pixfmt for texture formats but not for surface formats, then
* we'll have to convert the texture to a supported surface format before uploading. * we'll have to convert the texture to a supported surface format before uploading.
* This is too slow for dynamic textures. */ * This is too slow for dynamic textures. */
if( bRealtime && !SupportsSurfaceFormat(pixfmt) ) if(bRealtime && !SupportsSurfaceFormat(pixfmt))
return false; return false;
switch( g_GLPixFmtInfo[pixfmt].format ) switch(g_GLPixFmtInfo[pixfmt].format)
{ {
case GL_COLOR_INDEX: case GL_COLOR_INDEX:
return glColorTableEXT && glGetColorTableParameterivEXT; return glColorTableEXT && glGetColorTableParameterivEXT;
@@ -2626,22 +2631,22 @@ bool RageDisplay_Legacy::SupportsPerVertexMatrixScale()
return glGenBuffersARB && g_bTextureMatrixShader != 0; return glGenBuffersARB && g_bTextureMatrixShader != 0;
} }
void RageDisplay_Legacy::SetSphereEnvironmentMapping( TextureUnit tu, bool b ) void RageDisplay_Legacy::SetSphereEnvironmentMapping(TextureUnit tu, bool b)
{ {
if( !SetTextureUnit( tu ) ) if(!SetTextureUnit(tu))
return; return;
if( b ) if(b)
{ {
glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP ); glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP ); glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glEnable( GL_TEXTURE_GEN_S ); glEnable(GL_TEXTURE_GEN_S);
glEnable( GL_TEXTURE_GEN_T ); glEnable(GL_TEXTURE_GEN_T);
} }
else else
{ {
glDisable( GL_TEXTURE_GEN_S ); glDisable(GL_TEXTURE_GEN_S);
glDisable( GL_TEXTURE_GEN_T ); glDisable(GL_TEXTURE_GEN_T);
} }
} }
@@ -2649,19 +2654,19 @@ GLint iCelTexture1, iCelTexture2 = 0;
void RageDisplay_Legacy::SetCelShaded( int stage ) void RageDisplay_Legacy::SetCelShaded( int stage )
{ {
if( !GLEW_ARB_fragment_shader ) if(!GLEW_ARB_fragment_program && !GL_ARB_shading_language_100)
return; // not supported return; // not supported
switch ( stage ) switch (stage)
{ {
case 1: case 1:
glUseProgramObjectARB( g_gShellShader ); glUseProgramObjectARB(g_gShellShader);
break; break;
case 2: case 2:
glUseProgramObjectARB( g_gCelShader ); glUseProgramObjectARB(g_gCelShader);
break; break;
default: default:
glUseProgramObjectARB( 0 ); glUseProgramObjectARB(0);
break; break;
} }
} }