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Compress font lattice data

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idea4good 2019-03-01 15:11:42 +08:00
parent 993a9501c3
commit fca0350d08
1 changed files with 19 additions and 9 deletions
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28
core/src/word.cpp
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@ -179,14 +179,19 @@ int c_word::draw_single_char(c_surface* surface, int z_order, unsigned int utf8_
void c_word::draw_lattice(c_surface* surface, int z_order, int x, int y, int width, int height, void c_word::draw_lattice(c_surface* surface, int z_order, int x, int y, int width, int height,
const unsigned char* p_data, unsigned int font_color, unsigned int bg_color) const unsigned char* p_data, unsigned int font_color, unsigned int bg_color)
{ {
unsigned int r, g, b; unsigned int r, g, b, rgb;
unsigned char blk_value = *p_data++;
unsigned char blk_cnt = *p_data++;
b = (GL_RGB_B(font_color) * blk_value + GL_RGB_B(bg_color) * (255 - blk_value)) >> 8;
g = (GL_RGB_G(font_color) * blk_value + GL_RGB_G(bg_color) * (255 - blk_value)) >> 8;
r = (GL_RGB_R(font_color) * blk_value + GL_RGB_R(bg_color) * (255 - blk_value)) >> 8;
rgb = GL_RGB(r, g, b);
for (int y_ = 0; y_ < height; y_++) for (int y_ = 0; y_ < height; y_++)
{ {
for (int x_ = 0; x_ < width; x_++) for (int x_ = 0; x_ < width; x_++)
{ {
unsigned char value = *p_data; ASSERT(blk_cnt);
if (0x00 == value) if (0x00 == blk_value)
{ {
if (GL_ARGB_A(bg_color)) if (GL_ARGB_A(bg_color))
{ {
@ -195,12 +200,17 @@ void c_word::draw_lattice(c_surface* surface, int z_order, int x, int y, int wid
} }
else else
{ {
b = (GL_RGB_B(font_color) * value + GL_RGB_B(bg_color) * (255 - value)) >> 8; surface->draw_pixel((x + x_), (y + y_), rgb, z_order);
g = (GL_RGB_G(font_color) * value + GL_RGB_G(bg_color) * (255 - value)) >> 8; }
r = (GL_RGB_R(font_color) * value + GL_RGB_R(bg_color) * (255 - value)) >> 8; if (--blk_cnt == 0)
surface->draw_pixel((x + x_), (y + y_), GL_RGB(r, g, b), z_order); {//reload new block
blk_value = *p_data++;
blk_cnt = *p_data++;
b = (GL_RGB_B(font_color) * blk_value + GL_RGB_B(bg_color) * (255 - blk_value)) >> 8;
g = (GL_RGB_G(font_color) * blk_value + GL_RGB_G(bg_color) * (255 - blk_value)) >> 8;
r = (GL_RGB_R(font_color) * blk_value + GL_RGB_R(bg_color) * (255 - blk_value)) >> 8;
rgb = GL_RGB(r, g, b);
} }
p_data++;
} }
} }
} }