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fix volatile text rendering artifacts with MSAA

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a0a47640b0
This commit is contained in:
Garux 2020-10-29 14:02:58 +03:00
parent af71efc0e6
commit c50c044a31
1 changed files with 5 additions and 3 deletions
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8
libs/gtkutil/glfont.cpp
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@ -801,8 +801,10 @@ GLFont *glfont_create( const char* font_string ){
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0 );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0 );
//Here we actually create the texture itself
void* empty = calloc( font_height * 12 * font_height * 12 * 2, sizeof( GLubyte ) );
glTexImage2D( GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, font_height * 12, font_height * 12, // riskily assuming, that height >= max width
0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 0 );
0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, empty );
free( empty );
for( unsigned char c = 0; c < 128; ++c ){
@ -840,9 +842,9 @@ GLFont *glfont_create( const char* font_string ){
glNewList( font_list_base + c, GL_COMPILE );
glBegin( GL_QUADS );
const float x0 = 0;
const float x1 = bitmap.width + .01f;
const float x1 = bitmap.width;
const float y0 = 0;
const float y1 = bitmap.rows + .01f;
const float y1 = bitmap.rows;
const float tx0 = ( c % 12 ) / 12.f;
const float tx1 = ( c % 12 + static_cast<float>( bitmap.width ) / font_height ) / 12.f;
const float ty0 = ( c / 12 ) / 12.f;