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Radiant:

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misc...
	* new very fast entity names rendering system
	* render entity names in cam within < 512u dist or if selected
This commit is contained in:
Garux
2017-08-02 09:36:47 +03:00
parent bec8719fe1
commit 43d4204697
16 changed files with 556 additions and 45 deletions
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266
libs/gtkutil/glfont.cpp
View File

@@ -22,6 +22,9 @@
#include "glfont.h"
#include "igl.h"
#include <pango/pangoft2.h>
#include <pango/pango-utils.h>
// generic string printing with call lists
class GLFontCallList : public GLFont
{
@@ -29,16 +32,257 @@ GLuint m_displayList;
int m_pixelHeight;
int m_pixelAscent;
int m_pixelDescent;
PangoFontMap *m_fontmap;
PangoContext *m_ft2_context;
public:
GLFontCallList( GLuint displayList, int asc, int desc, int pixelHeight ) : m_displayList( displayList ), m_pixelHeight( pixelHeight ), m_pixelAscent( asc ), m_pixelDescent( desc ){
GLFontCallList( GLuint displayList, int asc, int desc, int pixelHeight, PangoFontMap *fontmap, PangoContext *ft2_context ) :
m_displayList( displayList ), m_pixelHeight( pixelHeight ), m_pixelAscent( asc ), m_pixelDescent( desc ), m_fontmap( fontmap ), m_ft2_context( ft2_context ){
}
virtual ~GLFontCallList(){
glDeleteLists( m_displayList, 256 );
g_object_unref( G_OBJECT( m_ft2_context ) );
g_object_unref( G_OBJECT( m_fontmap ) );
}
void printString( const char *s ){
GlobalOpenGL().m_glListBase( m_displayList );
GlobalOpenGL().m_glCallLists( GLsizei( strlen( s ) ), GL_UNSIGNED_BYTE, reinterpret_cast<const GLubyte*>( s ) );
}
void renderString( const char *s, const GLuint& tex, const unsigned int colour[3], int& wid, int& hei ){
PangoLayout *layout;
PangoRectangle log_rect;
FT_Bitmap bitmap;
layout = pango_layout_new( m_ft2_context );
pango_layout_set_width( layout, -1 ); // -1 no wrapping. All text on one line.
pango_layout_set_text( layout, s, -1 ); // -1 null-terminated string.
pango_layout_get_extents( layout, NULL, &log_rect );
if ( log_rect.width > 0 && log_rect.height > 0 ) {
hei = bitmap.rows = PANGO_PIXELS_CEIL( log_rect.height );//m_pixelAscent + m_pixelDescent;
wid = bitmap.width = PANGO_PIXELS_CEIL( log_rect.width );
// globalOutputStream() << width << " " << height << "rendering\n";
bitmap.pitch = bitmap.width;
unsigned char *boo = (unsigned char *) malloc( bitmap.rows * bitmap.width );
memset( boo, 0, bitmap.rows * bitmap.width );
bitmap.buffer = boo;
bitmap.num_grays = 0xff;
bitmap.pixel_mode = FT_PIXEL_MODE_GRAY;
pango_ft2_render_layout_subpixel( &bitmap, layout, -log_rect.x, 0 );
hei += 2;
wid += 2;
unsigned char *buf = (unsigned char *) malloc( 4 * hei * wid );
memset( buf, 0x00, 4 * hei * wid );
#if 0
GLfloat color[4] = { 1, 0, 0, 1 };
guint32 rgb = ( ( ( guint32 )( color[0] * 255.0 ) ) << 24 ) |
( ( ( guint32 )( color[1] * 255.0 ) ) << 16 ) |
( ( ( guint32 )( color[2] * 255.0 ) ) << 8 );
GLfloat a = color[3];
guint32 *t;
guint8 *row, *row_end;
row = bitmap.buffer + bitmap.rows * bitmap.width; /* past-the-end */
row_end = bitmap.buffer; /* beginning */
t = ( guint32* ) buf;
if( a == 1.0 ) {
do {
row -= bitmap.width;
for( unsigned int i = 0; i < bitmap.width; i++ )
*t++ = rgb | ( ( guint32 ) row[i] );
} while( row != row_end );
} else
{
do
{
row -= bitmap.width;
for( unsigned int i = 0; i < bitmap.width; i++ )
* t++ = rgb | ( ( guint32 )( a* row[i] ) );
} while( row != row_end );
}
#endif // 0
#if 0
if( withfond ){ /* with background rectangle */
int x_max = wid;
int y_max = hei;
int x, y, bitmapIter = 0;
unsigned int fontColorR = 255;
unsigned int fontColorG = 255;
unsigned int fontColorB = 0;
unsigned int backgroundColorR = 64;
unsigned int backgroundColorG = 64;
unsigned int backgroundColorB = 64;
float opacity;
for( y = 0; y < y_max; y++ ) {
for( x = 0; x < x_max; x++ ) {
int iter = ( y * x_max + x ) * 4;
if( x == 0 || y == 0 || x == ( x_max - 1 ) || y == ( y_max - 1 ) ) {
buf[iter] = backgroundColorB;
buf[iter + 1] = backgroundColorG;
buf[iter + 2] = backgroundColorR;
buf[iter + 3] = 150; /* half trans border */
continue;
}
if( bitmap.buffer[bitmapIter] == 0 ) {
/* Render background color. */
buf[iter] = backgroundColorB;
buf[iter + 1] = backgroundColorG;
buf[iter + 2] = backgroundColorR;
buf[iter + 3] = 255;
}
else {
/* Calculate alpha (opacity). */
opacity = bitmap.buffer[bitmapIter] / 255.f;
buf[iter] = fontColorB * opacity + ( 1 - opacity ) * backgroundColorB;
buf[iter + 1] = fontColorG * opacity + ( 1 - opacity ) * backgroundColorG;
buf[iter + 2] = fontColorR * opacity + ( 1 - opacity ) * backgroundColorR;
buf[iter + 3] = 255;
}
++bitmapIter;
}
}
}
#else
if( 1 ){ /* normal with shadow */
int x_max = wid;
int y_max = hei;
int x, y, bitmapIter = 0;
// unsigned int fontColorR = 255;
// unsigned int fontColorG = 255;
// unsigned int fontColorB = 0;
unsigned int fontColorR = colour[0];
unsigned int fontColorG = colour[1];
unsigned int fontColorB = colour[2];
unsigned int backgroundColorR = 0;
unsigned int backgroundColorG = 0;
unsigned int backgroundColorB = 0;
for( y = 0; y < y_max; y++ ) {
for( x = 0; x < x_max; x++ ) {
int iter = ( y * x_max + x ) * 4;
if( x == 0 || y == 0 || x == 1 || y == 1 ) {
buf[iter] = fontColorB;
buf[iter + 1] = fontColorG;
buf[iter + 2] = fontColorR;
buf[iter + 3] = 0;
continue;
}
if( bitmap.buffer[bitmapIter] == 0 ){
buf[iter] = fontColorB;
buf[iter + 1] = fontColorG;
buf[iter + 2] = fontColorR;
buf[iter + 3] = 0;
}
else{
buf[iter] = backgroundColorB;
buf[iter + 1] = backgroundColorG;
buf[iter + 2] = backgroundColorR;
buf[iter + 3] = bitmap.buffer[bitmapIter];
}
++bitmapIter;
}
}
bitmapIter = 0;
for( y = 0; y < y_max; y++ ) {
for( x = 0; x < x_max; x++ ) {
int iter = ( y * x_max + x ) * 4;
if( x == 0 || y == 0 || x == ( x_max - 1 ) || y == ( y_max - 1 ) ) {
continue;
}
if( bitmap.buffer[bitmapIter] != 0 ) {
if( buf[iter + 3] == 0 ){
buf[iter] = fontColorB;
buf[iter + 1] = fontColorG;
buf[iter + 2] = fontColorR;
buf[iter + 3] = bitmap.buffer[bitmapIter];
}
else{
/* Calculate alpha (opacity). */
float opacityFont = bitmap.buffer[bitmapIter] / 255.f;
float opacityBack = buf[iter + 3] / 255.f;
buf[iter] = fontColorB * opacityFont + ( 1 - opacityFont ) * backgroundColorB;
buf[iter + 1] = fontColorG * opacityFont + ( 1 - opacityFont ) * backgroundColorG;
buf[iter + 2] = fontColorR * opacityFont + ( 1 - opacityFont ) * backgroundColorR;
buf[iter + 3] = ( opacityFont + ( 1 - opacityFont ) * opacityBack ) * 255.f;
}
}
++bitmapIter;
}
}
}
#endif // 0
else{ /* normal */
int x_max = wid;
int y_max = hei;
int x, y, bitmapIter = 0;
// unsigned int fontColorR = 0;
// unsigned int fontColorG = 255;
// unsigned int fontColorB = 0;
unsigned int fontColorR = colour[0];
unsigned int fontColorG = colour[1];
unsigned int fontColorB = colour[2];
for( y = 0; y < y_max; y++ ) {
for( x = 0; x < x_max; x++ ) {
int iter = ( y * x_max + x ) * 4;
if( x == 0 || y == 0 || x == ( x_max - 1 ) || y == ( y_max - 1 ) ) {
buf[iter] = fontColorB;
buf[iter + 1] = fontColorG;
buf[iter + 2] = fontColorR;
buf[iter + 3] = 0;
continue;
}
buf[iter] = fontColorB;
buf[iter + 1] = fontColorG;
buf[iter + 2] = fontColorR;
buf[iter + 3] = bitmap.buffer[bitmapIter];
++bitmapIter;
}
}
}
//Now we just setup some texture paramaters.
glBindTexture( GL_TEXTURE_2D, tex );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
// glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
// glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
// glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
//Here we actually create the texture itself
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, wid, hei,
0, GL_BGRA, GL_UNSIGNED_BYTE, buf );
glBindTexture( GL_TEXTURE_2D, 0 );
free( buf );
free( boo );
}
g_object_unref( G_OBJECT( layout ) );
}
virtual int getPixelAscent() const {
return m_pixelAscent;
}
@@ -351,6 +595,9 @@ GLFont *glfont_create( const char* font_string ){
PangoFont* font = gdk_gl_font_use_pango_font( font_desc, 0, 256, font_list_base );
PangoFontMap *fontmap = 0;
PangoContext *ft2_context = 0;
if ( font == 0 ) {
pango_font_description_free( font_desc );
font_desc = pango_font_description_from_string( "arial 8" );
@@ -382,9 +629,9 @@ GLFont *glfont_create( const char* font_string ){
if ( font != 0 ) {
PangoFontMap *fontmap = pango_ft2_font_map_new();
fontmap = pango_ft2_font_map_new();
pango_ft2_font_map_set_resolution( PANGO_FT2_FONT_MAP( fontmap ), 72, 72 );
PangoContext *ft2_context = pango_font_map_create_context( fontmap );
ft2_context = pango_font_map_create_context( fontmap );
pango_context_set_font_description( ft2_context, font_desc );
PangoLayout *layout = pango_layout_new( ft2_context );
@@ -399,15 +646,22 @@ GLFont *glfont_create( const char* font_string ){
g_object_unref( G_OBJECT( layout ) );
int font_descent_pango_units = log_rect.height - font_ascent_pango_units;
/* settings for render to tex; need to multiply size, so that bitmap callLists way size would be approximately = texture way */
gint fontsize = pango_font_description_get_size( font_desc );
fontsize *= 3;
fontsize /= 2; //*15/11 is equal to bitmap callLists size
pango_font_description_set_size( font_desc, fontsize );
pango_context_set_font_description( ft2_context, font_desc );
pango_font_description_free( font_desc );
g_object_unref( G_OBJECT( ft2_context ) );
g_object_unref( G_OBJECT( fontmap ) );
// g_object_unref( G_OBJECT( ft2_context ) );
// g_object_unref( G_OBJECT( fontmap ) );
font_ascent = PANGO_PIXELS_CEIL( font_ascent_pango_units );
font_descent = PANGO_PIXELS_CEIL( font_descent_pango_units );
font_height = font_ascent + font_descent;
}
return new GLFontCallList( font_list_base, font_ascent, font_descent, font_height );
return new GLFontCallList( font_list_base, font_ascent, font_descent, font_height, fontmap, ft2_context );
}

1
libs/gtkutil/glfont.h
View File

@@ -31,6 +31,7 @@ virtual int getPixelHeight() const = 0;
virtual int getPixelAscent() const = 0;
virtual int getPixelDescent() const = 0;
virtual void printString( const char *s ) = 0;
virtual void renderString( const char *s, const GLuint& tex, const unsigned int colour[3], int& wid, int& hei ) = 0;
virtual ~GLFont(){
}
};